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go/src/cmd/link/internal/ld/elf.go

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cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ld
import (
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
"cmd/internal/objabi"
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
"cmd/internal/sys"
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
"crypto/sha1"
cmd/internal/ld, cmd/internal/obj: delete Ctxt.Endian Replaced by Ctxt.ByteOrder, which uses the standard binary.ByteOrder type. Change-Id: I06cec0674c153a9ad75ff937f7eb934891effd0b Reviewed-on: https://go-review.googlesource.com/6450 Reviewed-by: Dave Cheney <dave@cheney.net> Reviewed-by: Rob Pike <r@golang.org>
2015-03-01 22:02:13 -05:00
"encoding/binary"
cmd/link/internal/ld: don't panic on short buildid When the linker was written in C, command line arguments were passed around as null-terminated byte arrays which encouraged checking characters one at a time. In Go, that can easily lead to out-of-bounds panics. Use the more idiomatic strings.HasPrefix when checking cmd/link's -B argument to avoid the panic, and replace the manual hex decode with use of the encoding/hex package. Fixes #14636 Change-Id: I45f765bbd8cf796fee1a9a3496178bf76b117827 Reviewed-on: https://go-review.googlesource.com/20211 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-03 22:37:14 -08:00
"encoding/hex"
cmd/link: hash packages after loading all symbols Conditioning on the plugin.Open symbol existing before loading all symbols means sometimes some packages don't have a hash value. Fixes #17928 Change-Id: I2722449aa58eca08a25117d3ce976f11f805b5ac Reviewed-on: https://go-review.googlesource.com/33925 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-12-05 23:20:20 -05:00
"io"
cmd/internal/ld: store the libraries a shared library was linked against in a note The motivation for this is the innocuous looking test case that is added. This creates a stack exe -> libdep2.so -> libdep.so -> libruntime.so. The problem comes from the fact that a function from libdep.so gets inlined all the way into exe. This (unsurprisingly) means that the object file for exe references symbols from libdep.so, which means that -ldep needs to be passed when linking exe and it isn't. The fix is simply to pass it -- there is no harm in passing it when it's not needed. The thing is, it's not clear at all in the current code to see how the linker can know that libdep2 is linked against libdep. It could look through the DT_NEEDED entries in libdep2 and try to guess which are Go libraries, but it feels better to be explicit. So this adds another SHT_NOTE section that lists the shared libraries a shared library was linked against, and makes sure the complete set of depended upon shared libraries is passed to the external linker. Change-Id: I79aa6f98b4db4721d657a7eb7b7f062269bf49e2 Reviewed-on: https://go-review.googlesource.com/10376 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-25 14:51:02 +12:00
"path/filepath"
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
"sort"
cmd/internal/ld: store the libraries a shared library was linked against in a note The motivation for this is the innocuous looking test case that is added. This creates a stack exe -> libdep2.so -> libdep.so -> libruntime.so. The problem comes from the fact that a function from libdep.so gets inlined all the way into exe. This (unsurprisingly) means that the object file for exe references symbols from libdep.so, which means that -ldep needs to be passed when linking exe and it isn't. The fix is simply to pass it -- there is no harm in passing it when it's not needed. The thing is, it's not clear at all in the current code to see how the linker can know that libdep2 is linked against libdep. It could look through the DT_NEEDED entries in libdep2 and try to guess which are Go libraries, but it feels better to be explicit. So this adds another SHT_NOTE section that lists the shared libraries a shared library was linked against, and makes sure the complete set of depended upon shared libraries is passed to the external linker. Change-Id: I79aa6f98b4db4721d657a7eb7b7f062269bf49e2 Reviewed-on: https://go-review.googlesource.com/10376 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-25 14:51:02 +12:00
"strings"
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
)
/*
* Derived from:
* $FreeBSD: src/sys/sys/elf32.h,v 1.8.14.1 2005/12/30 22:13:58 marcel Exp $
* $FreeBSD: src/sys/sys/elf64.h,v 1.10.14.1 2005/12/30 22:13:58 marcel Exp $
* $FreeBSD: src/sys/sys/elf_common.h,v 1.15.8.1 2005/12/30 22:13:58 marcel Exp $
* $FreeBSD: src/sys/alpha/include/elf.h,v 1.14 2003/09/25 01:10:22 peter Exp $
* $FreeBSD: src/sys/amd64/include/elf.h,v 1.18 2004/08/03 08:21:48 dfr Exp $
* $FreeBSD: src/sys/arm/include/elf.h,v 1.5.2.1 2006/06/30 21:42:52 cognet Exp $
* $FreeBSD: src/sys/i386/include/elf.h,v 1.16 2004/08/02 19:12:17 dfr Exp $
* $FreeBSD: src/sys/powerpc/include/elf.h,v 1.7 2004/11/02 09:47:01 ssouhlal Exp $
* $FreeBSD: src/sys/sparc64/include/elf.h,v 1.12 2003/09/25 01:10:26 peter Exp $
*
* Copyright (c) 1996-1998 John D. Polstra. All rights reserved.
* Copyright (c) 2001 David E. O'Brien
all: make copyright headers consistent with one space after period Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-10 14:32:26 -07:00
* Portions Copyright 2009 The Go Authors. All rights reserved.
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/*
* ELF definitions that are independent of architecture or word size.
*/
/*
* Note header. The ".note" section contains an array of notes. Each
* begins with this header, aligned to a word boundary. Immediately
* following the note header is n_namesz bytes of name, padded to the
* next word boundary. Then comes n_descsz bytes of descriptor, again
* padded to a word boundary. The values of n_namesz and n_descsz do
* not include the padding.
*/
cmd/link/internal/ld: camelCase a buch of snake_case names I've also unexported a few symbols that weren't used outside the package. Updates #16818 Change-Id: I39d9d87b3eec30b88b4a17c1333cfbbfa6b3518f Reviewed-on: https://go-review.googlesource.com/27468 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-22 10:33:13 -04:00
type elfNote struct {
nNamesz uint32
nDescsz uint32
nType uint32
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
const (
EI_MAG0 = 0
EI_MAG1 = 1
EI_MAG2 = 2
EI_MAG3 = 3
EI_CLASS = 4
EI_DATA = 5
EI_VERSION = 6
EI_OSABI = 7
EI_ABIVERSION = 8
OLD_EI_BRAND = 8
EI_PAD = 9
EI_NIDENT = 16
ELFMAG0 = 0x7f
ELFMAG1 = 'E'
ELFMAG2 = 'L'
ELFMAG3 = 'F'
SELFMAG = 4
EV_NONE = 0
EV_CURRENT = 1
ELFCLASSNONE = 0
ELFCLASS32 = 1
ELFCLASS64 = 2
ELFDATANONE = 0
ELFDATA2LSB = 1
ELFDATA2MSB = 2
ELFOSABI_NONE = 0
ELFOSABI_HPUX = 1
ELFOSABI_NETBSD = 2
ELFOSABI_LINUX = 3
ELFOSABI_HURD = 4
ELFOSABI_86OPEN = 5
ELFOSABI_SOLARIS = 6
ELFOSABI_AIX = 7
ELFOSABI_IRIX = 8
ELFOSABI_FREEBSD = 9
ELFOSABI_TRU64 = 10
ELFOSABI_MODESTO = 11
ELFOSABI_OPENBSD = 12
ELFOSABI_OPENVMS = 13
ELFOSABI_NSK = 14
ELFOSABI_ARM = 97
ELFOSABI_STANDALONE = 255
ELFOSABI_SYSV = ELFOSABI_NONE
ELFOSABI_MONTEREY = ELFOSABI_AIX
ET_NONE = 0
ET_REL = 1
ET_EXEC = 2
ET_DYN = 3
ET_CORE = 4
ET_LOOS = 0xfe00
ET_HIOS = 0xfeff
ET_LOPROC = 0xff00
ET_HIPROC = 0xffff
EM_NONE = 0
EM_M32 = 1
EM_SPARC = 2
EM_386 = 3
EM_68K = 4
EM_88K = 5
EM_860 = 7
EM_MIPS = 8
EM_S370 = 9
EM_MIPS_RS3_LE = 10
EM_PARISC = 15
EM_VPP500 = 17
EM_SPARC32PLUS = 18
EM_960 = 19
EM_PPC = 20
EM_PPC64 = 21
EM_S390 = 22
EM_V800 = 36
EM_FR20 = 37
EM_RH32 = 38
EM_RCE = 39
EM_ARM = 40
EM_SH = 42
EM_SPARCV9 = 43
EM_TRICORE = 44
EM_ARC = 45
EM_H8_300 = 46
EM_H8_300H = 47
EM_H8S = 48
EM_H8_500 = 49
EM_IA_64 = 50
EM_MIPS_X = 51
EM_COLDFIRE = 52
EM_68HC12 = 53
EM_MMA = 54
EM_PCP = 55
EM_NCPU = 56
EM_NDR1 = 57
EM_STARCORE = 58
EM_ME16 = 59
EM_ST100 = 60
EM_TINYJ = 61
EM_X86_64 = 62
cmd/7l: add the ARM64 linker Only internal linking without cgo is supported for now. Change-Id: I91eb1572c1ccc805db62fc4c29080df98797d51a Reviewed-on: https://go-review.googlesource.com/7048 Reviewed-by: Minux Ma <minux@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
2015-03-08 14:14:53 +01:00
EM_AARCH64 = 183
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
EM_486 = 6
EM_MIPS_RS4_BE = 10
EM_ALPHA_STD = 41
EM_ALPHA = 0x9026
SHN_UNDEF = 0
SHN_LORESERVE = 0xff00
SHN_LOPROC = 0xff00
SHN_HIPROC = 0xff1f
SHN_LOOS = 0xff20
SHN_HIOS = 0xff3f
SHN_ABS = 0xfff1
SHN_COMMON = 0xfff2
SHN_XINDEX = 0xffff
SHN_HIRESERVE = 0xffff
SHT_NULL = 0
SHT_PROGBITS = 1
SHT_SYMTAB = 2
SHT_STRTAB = 3
SHT_RELA = 4
SHT_HASH = 5
SHT_DYNAMIC = 6
SHT_NOTE = 7
SHT_NOBITS = 8
SHT_REL = 9
SHT_SHLIB = 10
SHT_DYNSYM = 11
SHT_INIT_ARRAY = 14
SHT_FINI_ARRAY = 15
SHT_PREINIT_ARRAY = 16
SHT_GROUP = 17
SHT_SYMTAB_SHNDX = 18
SHT_LOOS = 0x60000000
SHT_HIOS = 0x6fffffff
SHT_GNU_VERDEF = 0x6ffffffd
SHT_GNU_VERNEED = 0x6ffffffe
SHT_GNU_VERSYM = 0x6fffffff
SHT_LOPROC = 0x70000000
cmd/link: set the ELF headers of ARM executables that use cgo correctly It is generally expected that the ELF flags of a dynamically linked executable and the libraries it links against match. Go's linker currently always produces executables with flags that do not declare a float abi (hard, soft) at all, but when cgo is involved it is unlikely that this matches the system libraries being linked against -- really the decision about ABI is made by the C compiler during the invocation of cgo. This change is basically a port of the code from binutils that parses the ".ARM.attributes" section to check for the tag that declares that the code is built for the hard-float ABI. Fixes #7094 Change-Id: I737c8f3b5ed4af545cfc3e86722d03eb83083402 Reviewed-on: https://go-review.googlesource.com/14860 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Minux Ma <minux@golang.org>
2015-09-23 15:46:00 +12:00
SHT_ARM_ATTRIBUTES = 0x70000003
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
SHT_HIPROC = 0x7fffffff
SHT_LOUSER = 0x80000000
SHT_HIUSER = 0xffffffff
SHF_WRITE = 0x1
SHF_ALLOC = 0x2
SHF_EXECINSTR = 0x4
SHF_MERGE = 0x10
SHF_STRINGS = 0x20
SHF_INFO_LINK = 0x40
SHF_LINK_ORDER = 0x80
SHF_OS_NONCONFORMING = 0x100
SHF_GROUP = 0x200
SHF_TLS = 0x400
SHF_MASKOS = 0x0ff00000
SHF_MASKPROC = 0xf0000000
PT_NULL = 0
PT_LOAD = 1
PT_DYNAMIC = 2
PT_INTERP = 3
PT_NOTE = 4
PT_SHLIB = 5
PT_PHDR = 6
PT_TLS = 7
PT_LOOS = 0x60000000
PT_HIOS = 0x6fffffff
PT_LOPROC = 0x70000000
PT_HIPROC = 0x7fffffff
PT_GNU_STACK = 0x6474e551
cmd/link: mark rel.ro segment as PT_GNU_RELRO Details: http://www.airs.com/blog/archives/189 Part of adding PIE internal linking on linux/amd64. Change-Id: I8843a97f22f6f120346cccd694c7fff32f09f60b Reviewed-on: https://go-review.googlesource.com/28541 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-06 08:02:30 -04:00
PT_GNU_RELRO = 0x6474e552
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
PT_PAX_FLAGS = 0x65041580
cmd/link: non-executable stack support for Solaris Support the tagging of binaries created with the internal linker on Solaris as having a non-executable stack by writing a PT_SUNWSTACK program header. Fixes #16074 Change-Id: I3888f2153083385d04a52f341570f93e5738b276 Reviewed-on: https://go-review.googlesource.com/24142 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
2016-06-15 13:44:03 -07:00
PT_SUNWSTACK = 0x6ffffffb
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
PF_X = 0x1
PF_W = 0x2
PF_R = 0x4
PF_MASKOS = 0x0ff00000
PF_MASKPROC = 0xf0000000
DT_NULL = 0
DT_NEEDED = 1
DT_PLTRELSZ = 2
DT_PLTGOT = 3
DT_HASH = 4
DT_STRTAB = 5
DT_SYMTAB = 6
DT_RELA = 7
DT_RELASZ = 8
DT_RELAENT = 9
DT_STRSZ = 10
DT_SYMENT = 11
DT_INIT = 12
DT_FINI = 13
DT_SONAME = 14
DT_RPATH = 15
DT_SYMBOLIC = 16
DT_REL = 17
DT_RELSZ = 18
DT_RELENT = 19
DT_PLTREL = 20
DT_DEBUG = 21
DT_TEXTREL = 22
DT_JMPREL = 23
DT_BIND_NOW = 24
DT_INIT_ARRAY = 25
DT_FINI_ARRAY = 26
DT_INIT_ARRAYSZ = 27
DT_FINI_ARRAYSZ = 28
DT_RUNPATH = 29
DT_FLAGS = 30
DT_ENCODING = 32
DT_PREINIT_ARRAY = 32
DT_PREINIT_ARRAYSZ = 33
DT_LOOS = 0x6000000d
DT_HIOS = 0x6ffff000
DT_LOPROC = 0x70000000
DT_HIPROC = 0x7fffffff
DT_VERNEED = 0x6ffffffe
DT_VERNEEDNUM = 0x6fffffff
DT_VERSYM = 0x6ffffff0
DT_PPC64_GLINK = DT_LOPROC + 0
DT_PPC64_OPT = DT_LOPROC + 3
DF_ORIGIN = 0x0001
DF_SYMBOLIC = 0x0002
DF_TEXTREL = 0x0004
DF_BIND_NOW = 0x0008
DF_STATIC_TLS = 0x0010
NT_PRSTATUS = 1
NT_FPREGSET = 2
NT_PRPSINFO = 3
STB_LOCAL = 0
STB_GLOBAL = 1
STB_WEAK = 2
STB_LOOS = 10
STB_HIOS = 12
STB_LOPROC = 13
STB_HIPROC = 15
STT_NOTYPE = 0
STT_OBJECT = 1
STT_FUNC = 2
STT_SECTION = 3
STT_FILE = 4
STT_COMMON = 5
STT_TLS = 6
STT_LOOS = 10
STT_HIOS = 12
STT_LOPROC = 13
STT_HIPROC = 15
STV_DEFAULT = 0x0
STV_INTERNAL = 0x1
STV_HIDDEN = 0x2
STV_PROTECTED = 0x3
STN_UNDEF = 0
)
/* For accessing the fields of r_info. */
/* For constructing r_info from field values. */
/*
* Relocation types.
*/
const (
cmd/link: support new 386/amd64 relocations The GNU binutils recently picked up support for new 386/amd64 relocations. Add support for them in the Go linker when doing an internal link. The 386 relocation R_386_GOT32X was proposed in https://groups.google.com/forum/#!topic/ia32-abi/GbJJskkid4I . It can be treated as identical to the R_386_GOT32 relocation. The amd64 relocations R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX were proposed in https://groups.google.com/forum/#!topic/x86-64-abi/n9AWHogmVY0 . They can both be treated as identical to the R_X86_64_GOTPCREL relocation. The purpose of the new relocations is to permit additional linker relaxations in some cases. We do not attempt to support those cases. While we're at it, remove the unused and in some cases out of date _COUNT names from ld/elf.go. Fixes #13114. Change-Id: I34ef07f6fcd00cdd2996038ecf46bb77a49e968b Reviewed-on: https://go-review.googlesource.com/16529 Reviewed-by: Minux Ma <minux@golang.org>
2015-10-31 14:44:48 -07:00
R_X86_64_NONE = 0
R_X86_64_64 = 1
R_X86_64_PC32 = 2
R_X86_64_GOT32 = 3
R_X86_64_PLT32 = 4
R_X86_64_COPY = 5
R_X86_64_GLOB_DAT = 6
R_X86_64_JMP_SLOT = 7
R_X86_64_RELATIVE = 8
R_X86_64_GOTPCREL = 9
R_X86_64_32 = 10
R_X86_64_32S = 11
R_X86_64_16 = 12
R_X86_64_PC16 = 13
R_X86_64_8 = 14
R_X86_64_PC8 = 15
R_X86_64_DTPMOD64 = 16
R_X86_64_DTPOFF64 = 17
R_X86_64_TPOFF64 = 18
R_X86_64_TLSGD = 19
R_X86_64_TLSLD = 20
R_X86_64_DTPOFF32 = 21
R_X86_64_GOTTPOFF = 22
R_X86_64_TPOFF32 = 23
R_X86_64_PC64 = 24
R_X86_64_GOTOFF64 = 25
R_X86_64_GOTPC32 = 26
R_X86_64_GOT64 = 27
R_X86_64_GOTPCREL64 = 28
R_X86_64_GOTPC64 = 29
R_X86_64_GOTPLT64 = 30
R_X86_64_PLTOFF64 = 31
R_X86_64_SIZE32 = 32
R_X86_64_SIZE64 = 33
R_X86_64_GOTPC32_TLSDEC = 34
R_X86_64_TLSDESC_CALL = 35
R_X86_64_TLSDESC = 36
R_X86_64_IRELATIVE = 37
R_X86_64_PC32_BND = 40
R_X86_64_GOTPCRELX = 41
R_X86_64_REX_GOTPCRELX = 42
cmd/internal/obj, cmd/link, runtime: native-ish support for tls on arm64 Fixes #10560 Change-Id: Iedffd9c236c4fbb386c3afc52c5a1457f96ef122 Reviewed-on: https://go-review.googlesource.com/13991 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-08-11 14:10:03 +12:00
cmd/internal/obj, cmd/link: support inital-exec TLS on arm64 Change-Id: Iaf9159a68fa395245bc20ccb4a2a377f89371a7e Reviewed-on: https://go-review.googlesource.com/13996 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-10-28 15:27:51 +13:00
R_AARCH64_ABS64 = 257
R_AARCH64_ABS32 = 258
R_AARCH64_CALL26 = 283
R_AARCH64_ADR_PREL_PG_HI21 = 275
R_AARCH64_ADD_ABS_LO12_NC = 277
cmd/internal/obj, cmd/link: access global data via a GOT in -dynlink mode on arm64 Change-Id: I6ca9406207e40c7c2c661075ccfe57b6600235cf Reviewed-on: https://go-review.googlesource.com/13997 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-08-27 21:09:46 +12:00
R_AARCH64_LDST8_ABS_LO12_NC = 278
R_AARCH64_LDST16_ABS_LO12_NC = 284
R_AARCH64_LDST32_ABS_LO12_NC = 285
R_AARCH64_LDST64_ABS_LO12_NC = 286
R_AARCH64_ADR_GOT_PAGE = 311
R_AARCH64_LD64_GOT_LO12_NC = 312
cmd/internal/obj, cmd/link: support inital-exec TLS on arm64 Change-Id: Iaf9159a68fa395245bc20ccb4a2a377f89371a7e Reviewed-on: https://go-review.googlesource.com/13996 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-10-28 15:27:51 +13:00
R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 = 541
R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC = 542
R_AARCH64_TLSLE_MOVW_TPREL_G0 = 547
cmd/internal/obj, cmd/link, runtime: native-ish support for tls on arm64 Fixes #10560 Change-Id: Iedffd9c236c4fbb386c3afc52c5a1457f96ef122 Reviewed-on: https://go-review.googlesource.com/13991 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-08-11 14:10:03 +12:00
R_ALPHA_NONE = 0
R_ALPHA_REFLONG = 1
R_ALPHA_REFQUAD = 2
R_ALPHA_GPREL32 = 3
R_ALPHA_LITERAL = 4
R_ALPHA_LITUSE = 5
R_ALPHA_GPDISP = 6
R_ALPHA_BRADDR = 7
R_ALPHA_HINT = 8
R_ALPHA_SREL16 = 9
R_ALPHA_SREL32 = 10
R_ALPHA_SREL64 = 11
R_ALPHA_OP_PUSH = 12
R_ALPHA_OP_STORE = 13
R_ALPHA_OP_PSUB = 14
R_ALPHA_OP_PRSHIFT = 15
R_ALPHA_GPVALUE = 16
R_ALPHA_GPRELHIGH = 17
R_ALPHA_GPRELLOW = 18
R_ALPHA_IMMED_GP_16 = 19
R_ALPHA_IMMED_GP_HI32 = 20
R_ALPHA_IMMED_SCN_HI32 = 21
R_ALPHA_IMMED_BR_HI32 = 22
R_ALPHA_IMMED_LO32 = 23
R_ALPHA_COPY = 24
R_ALPHA_GLOB_DAT = 25
R_ALPHA_JMP_SLOT = 26
R_ALPHA_RELATIVE = 27
R_ARM_NONE = 0
R_ARM_PC24 = 1
R_ARM_ABS32 = 2
R_ARM_REL32 = 3
R_ARM_PC13 = 4
R_ARM_ABS16 = 5
R_ARM_ABS12 = 6
R_ARM_THM_ABS5 = 7
R_ARM_ABS8 = 8
R_ARM_SBREL32 = 9
R_ARM_THM_PC22 = 10
R_ARM_THM_PC8 = 11
R_ARM_AMP_VCALL9 = 12
R_ARM_SWI24 = 13
R_ARM_THM_SWI8 = 14
R_ARM_XPC25 = 15
R_ARM_THM_XPC22 = 16
R_ARM_COPY = 20
R_ARM_GLOB_DAT = 21
R_ARM_JUMP_SLOT = 22
R_ARM_RELATIVE = 23
R_ARM_GOTOFF = 24
R_ARM_GOTPC = 25
R_ARM_GOT32 = 26
R_ARM_PLT32 = 27
R_ARM_CALL = 28
R_ARM_JUMP24 = 29
R_ARM_V4BX = 40
R_ARM_GOT_PREL = 96
R_ARM_GNU_VTENTRY = 100
R_ARM_GNU_VTINHERIT = 101
R_ARM_TLS_IE32 = 107
R_ARM_TLS_LE32 = 108
R_ARM_RSBREL32 = 250
R_ARM_THM_RPC22 = 251
R_ARM_RREL32 = 252
R_ARM_RABS32 = 253
R_ARM_RPC24 = 254
R_ARM_RBASE = 255
cmd/link: support new 386/amd64 relocations The GNU binutils recently picked up support for new 386/amd64 relocations. Add support for them in the Go linker when doing an internal link. The 386 relocation R_386_GOT32X was proposed in https://groups.google.com/forum/#!topic/ia32-abi/GbJJskkid4I . It can be treated as identical to the R_386_GOT32 relocation. The amd64 relocations R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX were proposed in https://groups.google.com/forum/#!topic/x86-64-abi/n9AWHogmVY0 . They can both be treated as identical to the R_X86_64_GOTPCREL relocation. The purpose of the new relocations is to permit additional linker relaxations in some cases. We do not attempt to support those cases. While we're at it, remove the unused and in some cases out of date _COUNT names from ld/elf.go. Fixes #13114. Change-Id: I34ef07f6fcd00cdd2996038ecf46bb77a49e968b Reviewed-on: https://go-review.googlesource.com/16529 Reviewed-by: Minux Ma <minux@golang.org>
2015-10-31 14:44:48 -07:00
R_386_NONE = 0
R_386_32 = 1
R_386_PC32 = 2
R_386_GOT32 = 3
R_386_PLT32 = 4
R_386_COPY = 5
R_386_GLOB_DAT = 6
R_386_JMP_SLOT = 7
R_386_RELATIVE = 8
R_386_GOTOFF = 9
R_386_GOTPC = 10
R_386_TLS_TPOFF = 14
R_386_TLS_IE = 15
R_386_TLS_GOTIE = 16
R_386_TLS_LE = 17
R_386_TLS_GD = 18
R_386_TLS_LDM = 19
R_386_TLS_GD_32 = 24
R_386_TLS_GD_PUSH = 25
R_386_TLS_GD_CALL = 26
R_386_TLS_GD_POP = 27
R_386_TLS_LDM_32 = 28
R_386_TLS_LDM_PUSH = 29
R_386_TLS_LDM_CALL = 30
R_386_TLS_LDM_POP = 31
R_386_TLS_LDO_32 = 32
R_386_TLS_IE_32 = 33
R_386_TLS_LE_32 = 34
R_386_TLS_DTPMOD32 = 35
R_386_TLS_DTPOFF32 = 36
R_386_TLS_TPOFF32 = 37
R_386_TLS_GOTDESC = 39
R_386_TLS_DESC_CALL = 40
R_386_TLS_DESC = 41
R_386_IRELATIVE = 42
R_386_GOT32X = 43
cmd/internal/obj, cmd/link, runtime: native-ish support for tls on arm64 Fixes #10560 Change-Id: Iedffd9c236c4fbb386c3afc52c5a1457f96ef122 Reviewed-on: https://go-review.googlesource.com/13991 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-08-11 14:10:03 +12:00
cmd/link, runtime: add external linking support for linux/mips64x Fixes #12560 Change-Id: Ic2004fc7b09f2dbbf83c41f8c6307757c0e1676d Reviewed-on: https://go-review.googlesource.com/19803 Reviewed-by: Minux Ma <minux@golang.org>
2016-04-27 22:18:09 -04:00
R_MIPS_NONE = 0
R_MIPS_16 = 1
R_MIPS_32 = 2
R_MIPS_REL32 = 3
R_MIPS_26 = 4
R_MIPS_HI16 = 5
R_MIPS_LO16 = 6
R_MIPS_GPREL16 = 7
R_MIPS_LITERAL = 8
R_MIPS_GOT16 = 9
R_MIPS_PC16 = 10
R_MIPS_CALL16 = 11
R_MIPS_GPREL32 = 12
R_MIPS_SHIFT5 = 16
R_MIPS_SHIFT6 = 17
R_MIPS_64 = 18
R_MIPS_GOT_DISP = 19
R_MIPS_GOT_PAGE = 20
R_MIPS_GOT_OFST = 21
R_MIPS_GOT_HI16 = 22
R_MIPS_GOT_LO16 = 23
R_MIPS_SUB = 24
R_MIPS_INSERT_A = 25
R_MIPS_INSERT_B = 26
R_MIPS_DELETE = 27
R_MIPS_HIGHER = 28
R_MIPS_HIGHEST = 29
R_MIPS_CALL_HI16 = 30
R_MIPS_CALL_LO16 = 31
R_MIPS_SCN_DISP = 32
R_MIPS_REL16 = 33
R_MIPS_ADD_IMMEDIATE = 34
R_MIPS_PJUMP = 35
R_MIPS_RELGOT = 36
R_MIPS_JALR = 37
R_MIPS_TLS_DTPMOD32 = 38
R_MIPS_TLS_DTPREL32 = 39
R_MIPS_TLS_DTPMOD64 = 40
R_MIPS_TLS_DTPREL64 = 41
R_MIPS_TLS_GD = 42
R_MIPS_TLS_LDM = 43
R_MIPS_TLS_DTPREL_HI16 = 44
R_MIPS_TLS_DTPREL_LO16 = 45
R_MIPS_TLS_GOTTPREL = 46
R_MIPS_TLS_TPREL32 = 47
R_MIPS_TLS_TPREL64 = 48
R_MIPS_TLS_TPREL_HI16 = 49
R_MIPS_TLS_TPREL_LO16 = 50
cmd/internal/obj, cmd/link, runtime: native-ish support for tls on arm64 Fixes #10560 Change-Id: Iedffd9c236c4fbb386c3afc52c5a1457f96ef122 Reviewed-on: https://go-review.googlesource.com/13991 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-08-11 14:10:03 +12:00
R_PPC_NONE = 0
R_PPC_ADDR32 = 1
R_PPC_ADDR24 = 2
R_PPC_ADDR16 = 3
R_PPC_ADDR16_LO = 4
R_PPC_ADDR16_HI = 5
R_PPC_ADDR16_HA = 6
R_PPC_ADDR14 = 7
R_PPC_ADDR14_BRTAKEN = 8
R_PPC_ADDR14_BRNTAKEN = 9
R_PPC_REL24 = 10
R_PPC_REL14 = 11
R_PPC_REL14_BRTAKEN = 12
R_PPC_REL14_BRNTAKEN = 13
R_PPC_GOT16 = 14
R_PPC_GOT16_LO = 15
R_PPC_GOT16_HI = 16
R_PPC_GOT16_HA = 17
R_PPC_PLTREL24 = 18
R_PPC_COPY = 19
R_PPC_GLOB_DAT = 20
R_PPC_JMP_SLOT = 21
R_PPC_RELATIVE = 22
R_PPC_LOCAL24PC = 23
R_PPC_UADDR32 = 24
R_PPC_UADDR16 = 25
R_PPC_REL32 = 26
R_PPC_PLT32 = 27
R_PPC_PLTREL32 = 28
R_PPC_PLT16_LO = 29
R_PPC_PLT16_HI = 30
R_PPC_PLT16_HA = 31
R_PPC_SDAREL16 = 32
R_PPC_SECTOFF = 33
R_PPC_SECTOFF_LO = 34
R_PPC_SECTOFF_HI = 35
R_PPC_SECTOFF_HA = 36
R_PPC_TLS = 67
R_PPC_DTPMOD32 = 68
R_PPC_TPREL16 = 69
R_PPC_TPREL16_LO = 70
R_PPC_TPREL16_HI = 71
R_PPC_TPREL16_HA = 72
R_PPC_TPREL32 = 73
R_PPC_DTPREL16 = 74
R_PPC_DTPREL16_LO = 75
R_PPC_DTPREL16_HI = 76
R_PPC_DTPREL16_HA = 77
R_PPC_DTPREL32 = 78
R_PPC_GOT_TLSGD16 = 79
R_PPC_GOT_TLSGD16_LO = 80
R_PPC_GOT_TLSGD16_HI = 81
R_PPC_GOT_TLSGD16_HA = 82
R_PPC_GOT_TLSLD16 = 83
R_PPC_GOT_TLSLD16_LO = 84
R_PPC_GOT_TLSLD16_HI = 85
R_PPC_GOT_TLSLD16_HA = 86
R_PPC_GOT_TPREL16 = 87
R_PPC_GOT_TPREL16_LO = 88
R_PPC_GOT_TPREL16_HI = 89
R_PPC_GOT_TPREL16_HA = 90
R_PPC_EMB_NADDR32 = 101
R_PPC_EMB_NADDR16 = 102
R_PPC_EMB_NADDR16_LO = 103
R_PPC_EMB_NADDR16_HI = 104
R_PPC_EMB_NADDR16_HA = 105
R_PPC_EMB_SDAI16 = 106
R_PPC_EMB_SDA2I16 = 107
R_PPC_EMB_SDA2REL = 108
R_PPC_EMB_SDA21 = 109
R_PPC_EMB_MRKREF = 110
R_PPC_EMB_RELSEC16 = 111
R_PPC_EMB_RELST_LO = 112
R_PPC_EMB_RELST_HI = 113
R_PPC_EMB_RELST_HA = 114
R_PPC_EMB_BIT_FLD = 115
R_PPC_EMB_RELSDA = 116
cmd/internal/obj, runtime: implement IE model TLS on ppc64le This requires changing the tls access code to match the patterns documented in the ABI documentation or the system linker will "optimize" it into ridiculousness. With this change, -buildmode=pie works, although as it is tested in testshared, the tests are not run yet. Change-Id: I1efa6687af0a5b8db3385b10f6542a49056b2eb3 Reviewed-on: https://go-review.googlesource.com/15971 Reviewed-by: Russ Cox <rsc@golang.org>
2015-10-16 21:15:18 +13:00
R_PPC64_ADDR32 = R_PPC_ADDR32
R_PPC64_ADDR16_LO = R_PPC_ADDR16_LO
R_PPC64_ADDR16_HA = R_PPC_ADDR16_HA
R_PPC64_REL24 = R_PPC_REL24
R_PPC64_GOT16_HA = R_PPC_GOT16_HA
R_PPC64_JMP_SLOT = R_PPC_JMP_SLOT
R_PPC64_TPREL16 = R_PPC_TPREL16
R_PPC64_ADDR64 = 38
R_PPC64_TOC16 = 47
R_PPC64_TOC16_LO = 48
R_PPC64_TOC16_HI = 49
R_PPC64_TOC16_HA = 50
R_PPC64_ADDR16_LO_DS = 57
R_PPC64_GOT16_LO_DS = 59
R_PPC64_TOC16_DS = 63
R_PPC64_TOC16_LO_DS = 64
R_PPC64_TLS = 67
R_PPC64_GOT_TPREL16_LO_DS = 88
R_PPC64_GOT_TPREL16_HA = 90
R_PPC64_REL16_LO = 250
R_PPC64_REL16_HI = 251
R_PPC64_REL16_HA = 252
cmd/internal/obj, cmd/link, runtime: native-ish support for tls on arm64 Fixes #10560 Change-Id: Iedffd9c236c4fbb386c3afc52c5a1457f96ef122 Reviewed-on: https://go-review.googlesource.com/13991 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-08-11 14:10:03 +12:00
R_SPARC_NONE = 0
R_SPARC_8 = 1
R_SPARC_16 = 2
R_SPARC_32 = 3
R_SPARC_DISP8 = 4
R_SPARC_DISP16 = 5
R_SPARC_DISP32 = 6
R_SPARC_WDISP30 = 7
R_SPARC_WDISP22 = 8
R_SPARC_HI22 = 9
R_SPARC_22 = 10
R_SPARC_13 = 11
R_SPARC_LO10 = 12
R_SPARC_GOT10 = 13
R_SPARC_GOT13 = 14
R_SPARC_GOT22 = 15
R_SPARC_PC10 = 16
R_SPARC_PC22 = 17
R_SPARC_WPLT30 = 18
R_SPARC_COPY = 19
R_SPARC_GLOB_DAT = 20
R_SPARC_JMP_SLOT = 21
R_SPARC_RELATIVE = 22
R_SPARC_UA32 = 23
R_SPARC_PLT32 = 24
R_SPARC_HIPLT22 = 25
R_SPARC_LOPLT10 = 26
R_SPARC_PCPLT32 = 27
R_SPARC_PCPLT22 = 28
R_SPARC_PCPLT10 = 29
R_SPARC_10 = 30
R_SPARC_11 = 31
R_SPARC_64 = 32
R_SPARC_OLO10 = 33
R_SPARC_HH22 = 34
R_SPARC_HM10 = 35
R_SPARC_LM22 = 36
R_SPARC_PC_HH22 = 37
R_SPARC_PC_HM10 = 38
R_SPARC_PC_LM22 = 39
R_SPARC_WDISP16 = 40
R_SPARC_WDISP19 = 41
R_SPARC_GLOB_JMP = 42
R_SPARC_7 = 43
R_SPARC_5 = 44
R_SPARC_6 = 45
R_SPARC_DISP64 = 46
R_SPARC_PLT64 = 47
R_SPARC_HIX22 = 48
R_SPARC_LOX10 = 49
R_SPARC_H44 = 50
R_SPARC_M44 = 51
R_SPARC_L44 = 52
R_SPARC_REGISTER = 53
R_SPARC_UA64 = 54
R_SPARC_UA16 = 55
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
R_390_NONE = 0
R_390_8 = 1
R_390_12 = 2
R_390_16 = 3
R_390_32 = 4
R_390_PC32 = 5
R_390_GOT12 = 6
R_390_GOT32 = 7
R_390_PLT32 = 8
R_390_COPY = 9
R_390_GLOB_DAT = 10
R_390_JMP_SLOT = 11
R_390_RELATIVE = 12
R_390_GOTOFF = 13
R_390_GOTPC = 14
R_390_GOT16 = 15
R_390_PC16 = 16
R_390_PC16DBL = 17
R_390_PLT16DBL = 18
R_390_PC32DBL = 19
R_390_PLT32DBL = 20
R_390_GOTPCDBL = 21
R_390_64 = 22
R_390_PC64 = 23
R_390_GOT64 = 24
R_390_PLT64 = 25
R_390_GOTENT = 26
R_390_GOTOFF16 = 27
R_390_GOTOFF64 = 28
R_390_GOTPLT12 = 29
R_390_GOTPLT16 = 30
R_390_GOTPLT32 = 31
R_390_GOTPLT64 = 32
R_390_GOTPLTENT = 33
R_390_GOTPLTOFF16 = 34
R_390_GOTPLTOFF32 = 35
R_390_GOTPLTOFF64 = 36
R_390_TLS_LOAD = 37
R_390_TLS_GDCALL = 38
R_390_TLS_LDCALL = 39
R_390_TLS_GD32 = 40
R_390_TLS_GD64 = 41
R_390_TLS_GOTIE12 = 42
R_390_TLS_GOTIE32 = 43
R_390_TLS_GOTIE64 = 44
R_390_TLS_LDM32 = 45
R_390_TLS_LDM64 = 46
R_390_TLS_IE32 = 47
R_390_TLS_IE64 = 48
R_390_TLS_IEENT = 49
R_390_TLS_LE32 = 50
R_390_TLS_LE64 = 51
R_390_TLS_LDO32 = 52
R_390_TLS_LDO64 = 53
R_390_TLS_DTPMOD = 54
R_390_TLS_DTPOFF = 55
R_390_TLS_TPOFF = 56
R_390_20 = 57
R_390_GOT20 = 58
R_390_GOTPLT20 = 59
R_390_TLS_GOTIE20 = 60
cmd/internal/obj, cmd/link, runtime: native-ish support for tls on arm64 Fixes #10560 Change-Id: Iedffd9c236c4fbb386c3afc52c5a1457f96ef122 Reviewed-on: https://go-review.googlesource.com/13991 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2015-08-11 14:10:03 +12:00
ARM_MAGIC_TRAMP_NUMBER = 0x5c000003
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
)
/*
* Symbol table entries.
*/
/* For accessing the fields of st_info. */
/* For constructing st_info from field values. */
/* For accessing the fields of st_other. */
/*
* ELF header.
*/
type ElfEhdr struct {
ident [EI_NIDENT]uint8
type_ uint16
machine uint16
version uint32
entry uint64
phoff uint64
shoff uint64
flags uint32
ehsize uint16
phentsize uint16
phnum uint16
shentsize uint16
shnum uint16
shstrndx uint16
}
/*
* Section header.
*/
type ElfShdr struct {
name uint32
type_ uint32
flags uint64
addr uint64
off uint64
size uint64
link uint32
info uint32
addralign uint64
entsize uint64
shnum int
cmd/link/internal: rename LSym to Symbol, and add a doc comment. I'd also like to document some of its fields, but I don't know what they are. Change-Id: I87d341e255f785d351a8a73e645be668e02b2689 Reviewed-on: https://go-review.googlesource.com/27399 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-19 11:35:54 -04:00
secsym *Symbol
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
/*
* Program header.
*/
type ElfPhdr struct {
type_ uint32
flags uint32
off uint64
vaddr uint64
paddr uint64
filesz uint64
memsz uint64
align uint64
}
/* For accessing the fields of r_info. */
/* For constructing r_info from field values. */
/*
* Symbol table entries.
*/
/* For accessing the fields of st_info. */
/* For constructing st_info from field values. */
/* For accessing the fields of st_other. */
/*
* Go linker interface
*/
const (
ELF64HDRSIZE = 64
ELF64PHDRSIZE = 56
ELF64SHDRSIZE = 64
ELF64RELSIZE = 16
ELF64RELASIZE = 24
ELF64SYMSIZE = 24
ELF32HDRSIZE = 52
ELF32PHDRSIZE = 32
ELF32SHDRSIZE = 40
ELF32SYMSIZE = 16
ELF32RELSIZE = 8
)
/*
* The interface uses the 64-bit structures always,
* to avoid code duplication. The writers know how to
* marshal a 32-bit representation from the 64-bit structure.
*/
var Elfstrdat []byte
/*
* Total amount of space to reserve at the start of the file
* for Header, PHeaders, SHeaders, and interp.
* May waste some.
* On FreeBSD, cannot be larger than a page.
*/
const (
cmd/link: increase ELFRESERVE to a full page Etcd and kubernetes have hit this. See https://bugzilla.redhat.com/show_bug.cgi?id=1248071 Change-Id: I6231013efa0a19ee74f7ebacd1024adb368af83a Reviewed-on: https://go-review.googlesource.com/12951 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-07-30 16:30:54 -04:00
ELFRESERVE = 4096
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
)
/*
* We use the 64-bit data structures on both 32- and 64-bit machines
* in order to write the code just once. The 64-bit data structure is
* written in the 32-bit format on the 32-bit machines.
*/
const (
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
NSECT = 400
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
)
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
var (
Iself bool
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
Nelfsym int = 1
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
elf64 bool
// Either ".rel" or ".rela" depending on which type of relocation the
// target platform uses.
elfRelType string
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
ehdr ElfEhdr
phdr [NSECT]*ElfPhdr
shdr [NSECT]*ElfShdr
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
interp string
)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
type Elfstring struct {
s string
off int
}
var elfstr [100]Elfstring
var nelfstr int
var buildinfo []byte
/*
Initialize the global variable that describes the ELF header. It will be updated as
we write section and prog headers.
*/
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func Elfinit(ctxt *Link) {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
Iself = true
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.InFamily(sys.AMD64, sys.ARM64, sys.MIPS64, sys.PPC64, sys.S390X) {
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
elfRelType = ".rela"
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
} else {
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
elfRelType = ".rel"
}
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
switch ctxt.Arch.Family {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// 64-bit architectures
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.PPC64, sys.S390X:
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
if ctxt.Arch.ByteOrder == binary.BigEndian {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ehdr.flags = 1 /* Version 1 ABI */
} else {
ehdr.flags = 2 /* Version 2 ABI */
}
fallthrough
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.AMD64, sys.ARM64, sys.MIPS64:
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.MIPS64 {
cmd/link: set ELF CPIC bit in mips64 objects We already set it for mips32 objects. The native ELF linker warns when linking PIC objects with non-PIC objects. Our objects are PIC, but we were not marking them as such. Fixes #20243. Change-Id: Ifab131200b263e4c72cf81f7b131a65ac02a13a9 Reviewed-on: https://go-review.googlesource.com/42710 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-05-04 16:13:24 -04:00
ehdr.flags = 0x20000004 /* MIPS 3 CPIC */
cmd/link: added support for mips64{,le} Only internal linking without cgo is supported for now. Change-Id: Ie6074a8ff3ec13605b72028f2d60758034f87185 Reviewed-on: https://go-review.googlesource.com/14444 Reviewed-by: Minux Ma <minux@golang.org>
2015-09-10 11:32:49 -04:00
}
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
elf64 = true
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ehdr.phoff = ELF64HDRSIZE /* Must be be ELF64HDRSIZE: first PHdr must follow ELF header */
ehdr.shoff = ELF64HDRSIZE /* Will move as we add PHeaders */
ehdr.ehsize = ELF64HDRSIZE /* Must be ELF64HDRSIZE */
ehdr.phentsize = ELF64PHDRSIZE /* Must be ELF64PHDRSIZE */
ehdr.shentsize = ELF64SHDRSIZE /* Must be ELF64SHDRSIZE */
// 32-bit architectures
cmd/link/internal/ld: add support for GOARCH=mips{,le} Change-Id: Ida214ccc5858969ea60abb0787f4d98bab4336d6 Reviewed-on: https://go-review.googlesource.com/31480 TryBot-Result: Gobot Gobot <gobot@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2016-10-18 23:50:45 +02:00
case sys.ARM, sys.MIPS:
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.ARM {
cmd/link/internal/ld: add support for GOARCH=mips{,le} Change-Id: Ida214ccc5858969ea60abb0787f4d98bab4336d6 Reviewed-on: https://go-review.googlesource.com/31480 TryBot-Result: Gobot Gobot <gobot@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2016-10-18 23:50:45 +02:00
// we use EABI on linux/arm, freebsd/arm, netbsd/arm.
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hlinux || Headtype == objabi.Hfreebsd || Headtype == objabi.Hnetbsd {
cmd/link/internal/ld: add support for GOARCH=mips{,le} Change-Id: Ida214ccc5858969ea60abb0787f4d98bab4336d6 Reviewed-on: https://go-review.googlesource.com/31480 TryBot-Result: Gobot Gobot <gobot@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2016-10-18 23:50:45 +02:00
// We set a value here that makes no indication of which
// float ABI the object uses, because this is information
// used by the dynamic linker to compare executables and
// shared libraries -- so it only matters for cgo calls, and
// the information properly comes from the object files
// produced by the host C compiler. parseArmAttributes in
// ldelf.go reads that information and updates this field as
// appropriate.
ehdr.flags = 0x5000002 // has entry point, Version5 EABI
}
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
} else if ctxt.Arch.Family == sys.MIPS {
cmd/link: add external linking support for GOARCH=mips{,le} Fixes #17792. Change-Id: If4f24455eec0edb3b221aef6777a681f6c768866 Reviewed-on: https://go-review.googlesource.com/34313 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-12-13 21:23:39 +01:00
ehdr.flags = 0x50001004 /* MIPS 32 CPIC O32*/
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
fallthrough
default:
ehdr.phoff = ELF32HDRSIZE
/* Must be be ELF32HDRSIZE: first PHdr must follow ELF header */
ehdr.shoff = ELF32HDRSIZE /* Will move as we add PHeaders */
ehdr.ehsize = ELF32HDRSIZE /* Must be ELF32HDRSIZE */
ehdr.phentsize = ELF32PHDRSIZE /* Must be ELF32PHDRSIZE */
ehdr.shentsize = ELF32SHDRSIZE /* Must be ELF32SHDRSIZE */
}
}
cmd/link: fix elf64phdr to allow using upx (and other broken ELF loaders). The linker already applies the fix for elf32, so this just extends it to elf64. Inspired by https://github.com/pwaller/goupx Fixes #13974 Change-Id: I65d92b5be9590657060a0e8e80ff5b86ba40017f Reviewed-on: https://go-review.googlesource.com/18690 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-01-15 19:24:44 +02:00
// Make sure PT_LOAD is aligned properly and
// that there is no gap,
// correct ELF loaders will do this implicitly,
// but buggy ELF loaders like the one in some
// versions of QEMU and UPX won't.
func fixElfPhdr(e *ElfPhdr) {
frag := int(e.vaddr & (e.align - 1))
e.off -= uint64(frag)
e.vaddr -= uint64(frag)
e.paddr -= uint64(frag)
e.filesz += uint64(frag)
e.memsz += uint64(frag)
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elf64phdr(out *OutBuf, e *ElfPhdr) {
cmd/link: fix elf64phdr to allow using upx (and other broken ELF loaders). The linker already applies the fix for elf32, so this just extends it to elf64. Inspired by https://github.com/pwaller/goupx Fixes #13974 Change-Id: I65d92b5be9590657060a0e8e80ff5b86ba40017f Reviewed-on: https://go-review.googlesource.com/18690 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-01-15 19:24:44 +02:00
if e.type_ == PT_LOAD {
fixElfPhdr(e)
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write32(e.type_)
out.Write32(e.flags)
out.Write64(e.off)
out.Write64(e.vaddr)
out.Write64(e.paddr)
out.Write64(e.filesz)
out.Write64(e.memsz)
out.Write64(e.align)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elf32phdr(out *OutBuf, e *ElfPhdr) {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if e.type_ == PT_LOAD {
cmd/link: fix elf64phdr to allow using upx (and other broken ELF loaders). The linker already applies the fix for elf32, so this just extends it to elf64. Inspired by https://github.com/pwaller/goupx Fixes #13974 Change-Id: I65d92b5be9590657060a0e8e80ff5b86ba40017f Reviewed-on: https://go-review.googlesource.com/18690 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-01-15 19:24:44 +02:00
fixElfPhdr(e)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write32(e.type_)
out.Write32(uint32(e.off))
out.Write32(uint32(e.vaddr))
out.Write32(uint32(e.paddr))
out.Write32(uint32(e.filesz))
out.Write32(uint32(e.memsz))
out.Write32(e.flags)
out.Write32(uint32(e.align))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elf64shdr(out *OutBuf, e *ElfShdr) {
out.Write32(e.name)
out.Write32(e.type_)
out.Write64(e.flags)
out.Write64(e.addr)
out.Write64(e.off)
out.Write64(e.size)
out.Write32(e.link)
out.Write32(e.info)
out.Write64(e.addralign)
out.Write64(e.entsize)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elf32shdr(out *OutBuf, e *ElfShdr) {
out.Write32(e.name)
out.Write32(e.type_)
out.Write32(uint32(e.flags))
out.Write32(uint32(e.addr))
out.Write32(uint32(e.off))
out.Write32(uint32(e.size))
out.Write32(e.link)
out.Write32(e.info)
out.Write32(uint32(e.addralign))
out.Write32(uint32(e.entsize))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwriteshdrs(out *OutBuf) uint32 {
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for i := 0; i < int(ehdr.shnum); i++ {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
elf64shdr(out, shdr[i])
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
return uint32(ehdr.shnum) * ELF64SHDRSIZE
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for i := 0; i < int(ehdr.shnum); i++ {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
elf32shdr(out, shdr[i])
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
return uint32(ehdr.shnum) * ELF32SHDRSIZE
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
func elfsetstring(s *Symbol, str string, off int) {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if nelfstr >= len(elfstr) {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
Errorf(s, "too many elf strings")
cmd/internal/ld: replace Diag;Errorexit with Exitf I have left the Diag calls in place where I believe Ctxt.Cursym != nil which means this CL is not the improvement I had hoped for. However it is now safe to call Exitf whereever you are in the linker, which makes it easier to reason about some code. Change-Id: I8261e761ca9719f7d216e2747314adfe464e3337 Reviewed-on: https://go-review.googlesource.com/8668 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-09 07:37:17 -04:00
errorexit()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfstr[nelfstr].s = str
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
elfstr[nelfstr].off = off
nelfstr++
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwritephdrs(out *OutBuf) uint32 {
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for i := 0; i < int(ehdr.phnum); i++ {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
elf64phdr(out, phdr[i])
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
return uint32(ehdr.phnum) * ELF64PHDRSIZE
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for i := 0; i < int(ehdr.phnum); i++ {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
elf32phdr(out, phdr[i])
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
return uint32(ehdr.phnum) * ELF32PHDRSIZE
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
func newElfPhdr() *ElfPhdr {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
e := new(ElfPhdr)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if ehdr.phnum >= NSECT {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
Errorf(nil, "too many phdrs")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
phdr[ehdr.phnum] = e
ehdr.phnum++
}
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ehdr.shoff += ELF64PHDRSIZE
} else {
ehdr.shoff += ELF32PHDRSIZE
}
return e
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
func newElfShdr(name int64) *ElfShdr {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
e := new(ElfShdr)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
e.name = uint32(name)
e.shnum = int(ehdr.shnum)
if ehdr.shnum >= NSECT {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
Errorf(nil, "too many shdrs")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
shdr[ehdr.shnum] = e
ehdr.shnum++
}
return e
}
func getElfEhdr() *ElfEhdr {
return &ehdr
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elf64writehdr(out *OutBuf) uint32 {
out.Write(ehdr.ident[:])
out.Write16(ehdr.type_)
out.Write16(ehdr.machine)
out.Write32(ehdr.version)
out.Write64(ehdr.entry)
out.Write64(ehdr.phoff)
out.Write64(ehdr.shoff)
out.Write32(ehdr.flags)
out.Write16(ehdr.ehsize)
out.Write16(ehdr.phentsize)
out.Write16(ehdr.phnum)
out.Write16(ehdr.shentsize)
out.Write16(ehdr.shnum)
out.Write16(ehdr.shstrndx)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return ELF64HDRSIZE
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elf32writehdr(out *OutBuf) uint32 {
out.Write(ehdr.ident[:])
out.Write16(ehdr.type_)
out.Write16(ehdr.machine)
out.Write32(ehdr.version)
out.Write32(uint32(ehdr.entry))
out.Write32(uint32(ehdr.phoff))
out.Write32(uint32(ehdr.shoff))
out.Write32(ehdr.flags)
out.Write16(ehdr.ehsize)
out.Write16(ehdr.phentsize)
out.Write16(ehdr.phnum)
out.Write16(ehdr.shentsize)
out.Write16(ehdr.shnum)
out.Write16(ehdr.shstrndx)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return ELF32HDRSIZE
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwritehdr(out *OutBuf) uint32 {
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
return elf64writehdr(out)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
return elf32writehdr(out)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
/* Taken directly from the definition document for ELF64 */
cmd/link: stop generating garbage in elfhash All callers already had strings. No need to generate byte slice copies to work on bytes. Performance not measured, but probably helps at least a bit. Change-Id: Iec3230b69724fac68caae7aad46f2ce1504e82e5 Reviewed-on: https://go-review.googlesource.com/20136 Reviewed-by: David Crawshaw <crawshaw@golang.org> Reviewed-by: Dave Cheney <dave@cheney.net> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-02 14:29:44 -08:00
func elfhash(name string) uint32 {
var h uint32
for i := 0; i < len(name); i++ {
h = (h << 4) + uint32(name[i])
if g := h & 0xf0000000; g != 0 {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
h ^= g >> 24
}
h &= 0x0fffffff
}
return h
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func Elfwritedynent(ctxt *Link, s *Symbol, tag int, val uint64) {
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint64(ctxt.Arch, uint64(tag))
s.AddUint64(ctxt.Arch, val)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, uint32(tag))
s.AddUint32(ctxt.Arch, uint32(val))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func elfwritedynentsym(ctxt *Link, s *Symbol, tag int, t *Symbol) {
Elfwritedynentsymplus(ctxt, s, tag, t, 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func Elfwritedynentsymplus(ctxt *Link, s *Symbol, tag int, t *Symbol, add int64) {
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint64(ctxt.Arch, uint64(tag))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, uint32(tag))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddAddrPlus(ctxt.Arch, t, add)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func elfwritedynentsymsize(ctxt *Link, s *Symbol, tag int, t *Symbol) {
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint64(ctxt.Arch, uint64(tag))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, uint32(tag))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddSize(ctxt.Arch, t)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
func elfinterp(sh *ElfShdr, startva uint64, resoff uint64, p string) int {
interp = p
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
n := len(interp) + 1
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.addr = startva + resoff - uint64(n)
sh.off = resoff - uint64(n)
sh.size = uint64(n)
return n
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwriteinterp(out *OutBuf) int {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".interp")
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.SeekSet(int64(sh.off))
out.WriteString(interp)
out.Write8(0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return int(sh.size)
}
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
func elfnote(sh *ElfShdr, startva uint64, resoff uint64, sz int, alloc bool) int {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
n := 3*4 + uint64(sz) + resoff%4
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_NOTE
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
if alloc {
sh.flags = SHF_ALLOC
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.addralign = 4
sh.addr = startva + resoff - n
sh.off = resoff - n
sh.size = n - resoff%4
return int(n)
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwritenotehdr(out *OutBuf, str string, namesz uint32, descsz uint32, tag uint32) *ElfShdr {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(str)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// Write Elf_Note header.
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.SeekSet(int64(sh.off))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write32(namesz)
out.Write32(descsz)
out.Write32(tag)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return sh
}
// NetBSD Signature (as per sys/exec_elf.h)
const (
ELF_NOTE_NETBSD_NAMESZ = 7
ELF_NOTE_NETBSD_DESCSZ = 4
ELF_NOTE_NETBSD_TAG = 1
cmd/5l etc: restore comments lost during C -> Go conversion It appears that c2go dropped comments inside struct { ... } and enum { ... }. Restore them. Identified missing comments by checking for comments present in the C code but not the Go code, made a list, and then reapplied with some mechanical help. Missing comment finder: http://play.golang.org/p/g6qNUAo1Y0 Change-Id: I323ab45c7ef9d51e28eab3b699eb14bee1eef66b Reviewed-on: https://go-review.googlesource.com/6899 Reviewed-by: Rob Pike <r@golang.org>
2015-03-05 13:57:36 -05:00
ELF_NOTE_NETBSD_VERSION = 599000000 /* NetBSD 5.99 */
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
)
var ELF_NOTE_NETBSD_NAME = []byte("NetBSD\x00")
func elfnetbsdsig(sh *ElfShdr, startva uint64, resoff uint64) int {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
n := int(Rnd(ELF_NOTE_NETBSD_NAMESZ, 4) + Rnd(ELF_NOTE_NETBSD_DESCSZ, 4))
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
return elfnote(sh, startva, resoff, n, true)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwritenetbsdsig(out *OutBuf) int {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// Write Elf_Note header.
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
sh := elfwritenotehdr(out, ".note.netbsd.ident", ELF_NOTE_NETBSD_NAMESZ, ELF_NOTE_NETBSD_DESCSZ, ELF_NOTE_NETBSD_TAG)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if sh == nil {
return 0
}
// Followed by NetBSD string and version.
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write(ELF_NOTE_NETBSD_NAME)
out.Write8(0)
out.Write32(ELF_NOTE_NETBSD_VERSION)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return int(sh.size)
}
// OpenBSD Signature
const (
ELF_NOTE_OPENBSD_NAMESZ = 8
ELF_NOTE_OPENBSD_DESCSZ = 4
ELF_NOTE_OPENBSD_TAG = 1
ELF_NOTE_OPENBSD_VERSION = 0
)
var ELF_NOTE_OPENBSD_NAME = []byte("OpenBSD\x00")
func elfopenbsdsig(sh *ElfShdr, startva uint64, resoff uint64) int {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
n := ELF_NOTE_OPENBSD_NAMESZ + ELF_NOTE_OPENBSD_DESCSZ
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
return elfnote(sh, startva, resoff, n, true)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwriteopenbsdsig(out *OutBuf) int {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// Write Elf_Note header.
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
sh := elfwritenotehdr(out, ".note.openbsd.ident", ELF_NOTE_OPENBSD_NAMESZ, ELF_NOTE_OPENBSD_DESCSZ, ELF_NOTE_OPENBSD_TAG)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if sh == nil {
return 0
}
// Followed by OpenBSD string and version.
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write(ELF_NOTE_OPENBSD_NAME)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write32(ELF_NOTE_OPENBSD_VERSION)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return int(sh.size)
}
func addbuildinfo(val string) {
cmd/link/internal/ld: don't panic on short buildid When the linker was written in C, command line arguments were passed around as null-terminated byte arrays which encouraged checking characters one at a time. In Go, that can easily lead to out-of-bounds panics. Use the more idiomatic strings.HasPrefix when checking cmd/link's -B argument to avoid the panic, and replace the manual hex decode with use of the encoding/hex package. Fixes #14636 Change-Id: I45f765bbd8cf796fee1a9a3496178bf76b117827 Reviewed-on: https://go-review.googlesource.com/20211 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-03 22:37:14 -08:00
if !strings.HasPrefix(val, "0x") {
cmd/internal/ld: replace Diag;Errorexit with Exitf I have left the Diag calls in place where I believe Ctxt.Cursym != nil which means this CL is not the improvement I had hoped for. However it is now safe to call Exitf whereever you are in the linker, which makes it easier to reason about some code. Change-Id: I8261e761ca9719f7d216e2747314adfe464e3337 Reviewed-on: https://go-review.googlesource.com/8668 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-09 07:37:17 -04:00
Exitf("-B argument must start with 0x: %s", val)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
ov := val
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
val = val[2:]
cmd/link/internal/ld: don't panic on short buildid When the linker was written in C, command line arguments were passed around as null-terminated byte arrays which encouraged checking characters one at a time. In Go, that can easily lead to out-of-bounds panics. Use the more idiomatic strings.HasPrefix when checking cmd/link's -B argument to avoid the panic, and replace the manual hex decode with use of the encoding/hex package. Fixes #14636 Change-Id: I45f765bbd8cf796fee1a9a3496178bf76b117827 Reviewed-on: https://go-review.googlesource.com/20211 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-03 22:37:14 -08:00
const maxLen = 32
if hex.DecodedLen(len(val)) > maxLen {
Exitf("-B option too long (max %d digits): %s", maxLen, ov)
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link/internal/ld: don't panic on short buildid When the linker was written in C, command line arguments were passed around as null-terminated byte arrays which encouraged checking characters one at a time. In Go, that can easily lead to out-of-bounds panics. Use the more idiomatic strings.HasPrefix when checking cmd/link's -B argument to avoid the panic, and replace the manual hex decode with use of the encoding/hex package. Fixes #14636 Change-Id: I45f765bbd8cf796fee1a9a3496178bf76b117827 Reviewed-on: https://go-review.googlesource.com/20211 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-03 22:37:14 -08:00
b, err := hex.DecodeString(val)
if err != nil {
if err == hex.ErrLength {
Exitf("-B argument must have even number of digits: %s", ov)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal/ld: don't panic on short buildid When the linker was written in C, command line arguments were passed around as null-terminated byte arrays which encouraged checking characters one at a time. In Go, that can easily lead to out-of-bounds panics. Use the more idiomatic strings.HasPrefix when checking cmd/link's -B argument to avoid the panic, and replace the manual hex decode with use of the encoding/hex package. Fixes #14636 Change-Id: I45f765bbd8cf796fee1a9a3496178bf76b117827 Reviewed-on: https://go-review.googlesource.com/20211 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-03 22:37:14 -08:00
if inv, ok := err.(hex.InvalidByteError); ok {
Exitf("-B argument contains invalid hex digit %c: %s", byte(inv), ov)
}
Exitf("-B argument contains invalid hex: %s", ov)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal/ld: don't panic on short buildid When the linker was written in C, command line arguments were passed around as null-terminated byte arrays which encouraged checking characters one at a time. In Go, that can easily lead to out-of-bounds panics. Use the more idiomatic strings.HasPrefix when checking cmd/link's -B argument to avoid the panic, and replace the manual hex decode with use of the encoding/hex package. Fixes #14636 Change-Id: I45f765bbd8cf796fee1a9a3496178bf76b117827 Reviewed-on: https://go-review.googlesource.com/20211 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-03 22:37:14 -08:00
buildinfo = b
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
// Build info note
const (
ELF_NOTE_BUILDINFO_NAMESZ = 4
ELF_NOTE_BUILDINFO_TAG = 3
)
var ELF_NOTE_BUILDINFO_NAME = []byte("GNU\x00")
func elfbuildinfo(sh *ElfShdr, startva uint64, resoff uint64) int {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
n := int(ELF_NOTE_BUILDINFO_NAMESZ + Rnd(int64(len(buildinfo)), 4))
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
return elfnote(sh, startva, resoff, n, true)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
func elfgobuildid(sh *ElfShdr, startva uint64, resoff uint64) int {
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
n := len(ELF_NOTE_GO_NAME) + int(Rnd(int64(len(*flagBuildid)), 4))
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
return elfnote(sh, startva, resoff, n, true)
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwritebuildinfo(out *OutBuf) int {
sh := elfwritenotehdr(out, ".note.gnu.build-id", ELF_NOTE_BUILDINFO_NAMESZ, uint32(len(buildinfo)), ELF_NOTE_BUILDINFO_TAG)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if sh == nil {
return 0
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write(ELF_NOTE_BUILDINFO_NAME)
out.Write(buildinfo)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
var zero = make([]byte, 4)
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write(zero[:int(Rnd(int64(len(buildinfo)), 4)-int64(len(buildinfo)))])
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return int(sh.size)
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
func elfwritegobuildid(out *OutBuf) int {
sh := elfwritenotehdr(out, ".note.go.buildid", uint32(len(ELF_NOTE_GO_NAME)), uint32(len(*flagBuildid)), ELF_NOTE_GOBUILDID_TAG)
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
if sh == nil {
return 0
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write(ELF_NOTE_GO_NAME)
out.Write([]byte(*flagBuildid))
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
var zero = make([]byte, 4)
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
out.Write(zero[:int(Rnd(int64(len(*flagBuildid)), 4)-int64(len(*flagBuildid)))])
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
return int(sh.size)
}
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// Go specific notes
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
const (
ELF_NOTE_GOPKGLIST_TAG = 1
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
ELF_NOTE_GOABIHASH_TAG = 2
cmd/internal/ld: store the libraries a shared library was linked against in a note The motivation for this is the innocuous looking test case that is added. This creates a stack exe -> libdep2.so -> libdep.so -> libruntime.so. The problem comes from the fact that a function from libdep.so gets inlined all the way into exe. This (unsurprisingly) means that the object file for exe references symbols from libdep.so, which means that -ldep needs to be passed when linking exe and it isn't. The fix is simply to pass it -- there is no harm in passing it when it's not needed. The thing is, it's not clear at all in the current code to see how the linker can know that libdep2 is linked against libdep. It could look through the DT_NEEDED entries in libdep2 and try to guess which are Go libraries, but it feels better to be explicit. So this adds another SHT_NOTE section that lists the shared libraries a shared library was linked against, and makes sure the complete set of depended upon shared libraries is passed to the external linker. Change-Id: I79aa6f98b4db4721d657a7eb7b7f062269bf49e2 Reviewed-on: https://go-review.googlesource.com/10376 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-25 14:51:02 +12:00
ELF_NOTE_GODEPS_TAG = 3
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
ELF_NOTE_GOBUILDID_TAG = 4
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
)
cmd/go, cmd/link: use "Go" not "GO" as ELF note identifier Change-Id: I038e892725836ab7718f7638e8ad5712953f2cb5 Reviewed-on: https://go-review.googlesource.com/10704 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:27:39 -04:00
var ELF_NOTE_GO_NAME = []byte("Go\x00\x00")
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
var elfverneed int
type Elfaux struct {
next *Elfaux
num int
vers string
}
type Elflib struct {
next *Elflib
aux *Elfaux
file string
}
func addelflib(list **Elflib, file string, vers string) *Elfaux {
var lib *Elflib
for lib = *list; lib != nil; lib = lib.next {
if lib.file == file {
goto havelib
}
}
lib = new(Elflib)
lib.next = *list
lib.file = file
*list = lib
havelib:
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for aux := lib.aux; aux != nil; aux = aux.next {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if aux.vers == vers {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
return aux
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
aux := new(Elfaux)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
aux.next = lib.aux
aux.vers = vers
lib.aux = aux
return aux
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func elfdynhash(ctxt *Link) {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if !Iself {
return
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
nsym := Nelfsym
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s := ctxt.Syms.Lookup(".hash", 0)
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
i := nsym
nbucket := 1
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
for i > 0 {
nbucket++
i >>= 1
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev 796d0f2 on C->Go conversions. This replaces various awkward := initializations with plain var declarations. Checked bit-for-bit compatibility with toolstash + buildall. Change-Id: I601101d8177894adb9b0e3fb55dfe0ed4f544716 Reviewed-on: https://go-review.googlesource.com/6517 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-03-02 14:22:05 -05:00
var needlib *Elflib
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
need := make([]*Elfaux, nsym)
chain := make([]uint32, nsym)
buckets := make([]uint32, nbucket)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: do not directly embed Symbols in Link Mostly done with sed. Change-Id: Ic8c534a3fdd332b5420d062ee85bb77a30ad1efb Reviewed-on: https://go-review.googlesource.com/29346 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 14:59:39 +12:00
for _, sy := range ctxt.Syms.Allsym {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if sy.Dynid <= 0 {
continue
}
if sy.Dynimpvers != "" {
need[sy.Dynid] = addelflib(&needlib, sy.Dynimplib, sy.Dynimpvers)
}
cmd/link: make Allsym a slice Looks a tiny bit faster, which is a surprise. Probably noise. Motivation is making the LSym structure a little easier to understand. Linking juju, best of 10: before: real 0m4.811s user 0m5.582s after: real 0m4.611s user 0m5.267s Change-Id: Idbedaf4a6e6e199036a1bbb6760e98c94ed2c282 Reviewed-on: https://go-review.googlesource.com/20142 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: David Crawshaw <crawshaw@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-02 15:59:38 -05:00
name := sy.Extname
cmd/link: stop generating garbage in elfhash All callers already had strings. No need to generate byte slice copies to work on bytes. Performance not measured, but probably helps at least a bit. Change-Id: Iec3230b69724fac68caae7aad46f2ce1504e82e5 Reviewed-on: https://go-review.googlesource.com/20136 Reviewed-by: David Crawshaw <crawshaw@golang.org> Reviewed-by: Dave Cheney <dave@cheney.net> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-02 14:29:44 -08:00
hc := elfhash(name)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link/internal/ld: reduce the scope of some local declarations Move some local declarations closer to their use, reducing their respective lifetimes. Spotted while reviewing CL 67318. Change-Id: I68db67fe8530344d95e50efb6587bc724e1171f5 Reviewed-on: https://go-review.googlesource.com/67370 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Marvin Stenger <marvin.stenger94@gmail.com> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-10-01 14:39:04 +11:00
b := hc % uint32(nbucket)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
chain[sy.Dynid] = buckets[b]
buckets[b] = uint32(sy.Dynid)
}
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
// s390x (ELF64) hash table entries are 8 bytes
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.S390X {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint64(ctxt.Arch, uint64(nbucket))
s.AddUint64(ctxt.Arch, uint64(nsym))
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
for i := 0; i < nbucket; i++ {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint64(ctxt.Arch, uint64(buckets[i]))
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
}
for i := 0; i < nsym; i++ {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint64(ctxt.Arch, uint64(chain[i]))
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
}
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, uint32(nbucket))
s.AddUint32(ctxt.Arch, uint32(nsym))
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
for i := 0; i < nbucket; i++ {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, buckets[i])
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
}
for i := 0; i < nsym; i++ {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, chain[i])
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
// version symbols
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
dynstr := ctxt.Syms.Lookup(".dynstr", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".gnu.version_r", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
i = 2
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
nfile := 0
for l := needlib; l != nil; l = l.next {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
nfile++
// header
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint16(ctxt.Arch, 1) // table version
cmd/link/internal/ld: reduce the scope of some local declarations Move some local declarations closer to their use, reducing their respective lifetimes. Spotted while reviewing CL 67318. Change-Id: I68db67fe8530344d95e50efb6587bc724e1171f5 Reviewed-on: https://go-review.googlesource.com/67370 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Marvin Stenger <marvin.stenger94@gmail.com> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-10-01 14:39:04 +11:00
j := 0
for x := l.aux; x != nil; x = x.next {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
j++
}
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint16(ctxt.Arch, uint16(j)) // aux count
s.AddUint32(ctxt.Arch, uint32(Addstring(dynstr, l.file))) // file string offset
s.AddUint32(ctxt.Arch, 16) // offset from header to first aux
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if l.next != nil {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, 16+uint32(j)*16) // offset from this header to next
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal/ld: reduce the scope of some local declarations Move some local declarations closer to their use, reducing their respective lifetimes. Spotted while reviewing CL 67318. Change-Id: I68db67fe8530344d95e50efb6587bc724e1171f5 Reviewed-on: https://go-review.googlesource.com/67370 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Marvin Stenger <marvin.stenger94@gmail.com> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-10-01 14:39:04 +11:00
for x := l.aux; x != nil; x = x.next {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
x.num = i
i++
// aux struct
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, elfhash(x.vers)) // hash
s.AddUint16(ctxt.Arch, 0) // flags
s.AddUint16(ctxt.Arch, uint16(x.num)) // other - index we refer to this by
s.AddUint32(ctxt.Arch, uint32(Addstring(dynstr, x.vers))) // version string offset
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if x.next != nil {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, 16) // offset from this aux to next
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
}
// version references
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".gnu.version", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for i := 0; i < nsym; i++ {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if i == 0 {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint16(ctxt.Arch, 0) // first entry - no symbol
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else if need[i] == nil {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint16(ctxt.Arch, 1) // global
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint16(ctxt.Arch, uint16(need[i].num))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".dynamic", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
elfverneed = nfile
if elfverneed != 0 {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_VERNEED, ctxt.Syms.Lookup(".gnu.version_r", 0))
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_VERNEEDNUM, uint64(nfile))
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_VERSYM, ctxt.Syms.Lookup(".gnu.version", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
sy := ctxt.Syms.Lookup(elfRelType+".plt", 0)
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
if sy.Size > 0 {
if elfRelType == ".rela" {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_PLTREL, DT_RELA)
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
} else {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_PLTREL, DT_REL)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
elfwritedynentsymsize(ctxt, s, DT_PLTRELSZ, sy)
elfwritedynentsym(ctxt, s, DT_JMPREL, sy)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_NULL, 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
func elfphload(seg *Segment) *ElfPhdr {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
ph := newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ph.type_ = PT_LOAD
if seg.Rwx&4 != 0 {
ph.flags |= PF_R
}
if seg.Rwx&2 != 0 {
ph.flags |= PF_W
}
if seg.Rwx&1 != 0 {
ph.flags |= PF_X
}
ph.vaddr = seg.Vaddr
ph.paddr = seg.Vaddr
ph.memsz = seg.Length
ph.off = seg.Fileoff
ph.filesz = seg.Filelen
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
ph.align = uint64(*FlagRound)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return ph
}
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
func elfphrelro(seg *Segment) {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
ph := newElfPhdr()
cmd/link: mark rel.ro segment as PT_GNU_RELRO Details: http://www.airs.com/blog/archives/189 Part of adding PIE internal linking on linux/amd64. Change-Id: I8843a97f22f6f120346cccd694c7fff32f09f60b Reviewed-on: https://go-review.googlesource.com/28541 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-06 08:02:30 -04:00
ph.type_ = PT_GNU_RELRO
ph.vaddr = seg.Vaddr
ph.paddr = seg.Vaddr
ph.memsz = seg.Length
ph.off = seg.Fileoff
ph.filesz = seg.Filelen
ph.align = uint64(*FlagRound)
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
func elfshname(name string) *ElfShdr {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for i := 0; i < nelfstr; i++ {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if name == elfstr[i].s {
cmd/link/internal/ld: reduce the scope of some local declarations Move some local declarations closer to their use, reducing their respective lifetimes. Spotted while reviewing CL 67318. Change-Id: I68db67fe8530344d95e50efb6587bc724e1171f5 Reviewed-on: https://go-review.googlesource.com/67370 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Marvin Stenger <marvin.stenger94@gmail.com> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-10-01 14:39:04 +11:00
off := elfstr[i].off
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
for i = 0; i < int(ehdr.shnum); i++ {
cmd/link/internal/ld: reduce the scope of some local declarations Move some local declarations closer to their use, reducing their respective lifetimes. Spotted while reviewing CL 67318. Change-Id: I68db67fe8530344d95e50efb6587bc724e1171f5 Reviewed-on: https://go-review.googlesource.com/67370 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Marvin Stenger <marvin.stenger94@gmail.com> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-10-01 14:39:04 +11:00
sh := shdr[i]
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
if sh.name == uint32(off) {
return sh
}
}
cmd/link/internal/ld: reduce the scope of some local declarations Move some local declarations closer to their use, reducing their respective lifetimes. Spotted while reviewing CL 67318. Change-Id: I68db67fe8530344d95e50efb6587bc724e1171f5 Reviewed-on: https://go-review.googlesource.com/67370 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Marvin Stenger <marvin.stenger94@gmail.com> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-10-01 14:39:04 +11:00
return newElfShdr(int64(off))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
Exitf("cannot find elf name %s", name)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return nil
}
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
// Create an ElfShdr for the section with name.
// Create a duplicate if one already exists with that name
func elfshnamedup(name string) *ElfShdr {
for i := 0; i < nelfstr; i++ {
if name == elfstr[i].s {
cmd/link/internal/ld: reduce the scope of some local declarations Move some local declarations closer to their use, reducing their respective lifetimes. Spotted while reviewing CL 67318. Change-Id: I68db67fe8530344d95e50efb6587bc724e1171f5 Reviewed-on: https://go-review.googlesource.com/67370 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Marvin Stenger <marvin.stenger94@gmail.com> Reviewed-by: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-10-01 14:39:04 +11:00
off := elfstr[i].off
return newElfShdr(int64(off))
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
}
}
Errorf(nil, "cannot find elf name %s", name)
errorexit()
return nil
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
func elfshalloc(sect *Section) *ElfShdr {
sh := elfshname(sect.Name)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sect.Elfsect = sh
return sh
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
func elfshbits(sect *Section) *ElfShdr {
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
var sh *ElfShdr
if sect.Name == ".text" {
if sect.Elfsect == nil {
sect.Elfsect = elfshnamedup(sect.Name)
}
sh = sect.Elfsect
} else {
sh = elfshalloc(sect)
}
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// If this section has already been set up as a note, we assume type_ and
// flags are already correct, but the other fields still need filling in.
if sh.type_ == SHT_NOTE {
if Linkmode != LinkExternal {
// TODO(mwhudson): the approach here will work OK when
// linking internally for notes that we want to be included
// in a loadable segment (e.g. the abihash note) but not for
// notes that we do not want to be mapped (e.g. the package
// list note). The real fix is probably to define new values
cmd/link: remove references to LSym (now Symbol) Mostly comments but some derived names too. Change-Id: I1e01dccca98de6688e1426c7a9309f6fd6a1e368 Reviewed-on: https://go-review.googlesource.com/27415 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 10:27:20 +12:00
// for Symbol.Type corresponding to mapped and unmapped notes
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// and handle them in dodata().
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
Errorf(nil, "sh.type_ == SHT_NOTE in elfshbits when linking internally")
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
}
sh.addralign = uint64(sect.Align)
sh.size = sect.Length
sh.off = sect.Seg.Fileoff + sect.Vaddr - sect.Seg.Vaddr
return sh
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if sh.type_ > 0 {
return sh
}
if sect.Vaddr < sect.Seg.Vaddr+sect.Seg.Filelen {
sh.type_ = SHT_PROGBITS
} else {
sh.type_ = SHT_NOBITS
}
sh.flags = SHF_ALLOC
if sect.Rwx&1 != 0 {
sh.flags |= SHF_EXECINSTR
}
if sect.Rwx&2 != 0 {
sh.flags |= SHF_WRITE
}
if sect.Name == ".tbss" {
cmd/internal/obj, cmd/link, runtime: lots of TLS cleanup It's particularly nice to get rid of the android special cases in the linker. Change-Id: I516363af7ce8a6b2f196fe49cb8887ac787a6dad Reviewed-on: https://go-review.googlesource.com/14197 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-09-02 11:23:15 +12:00
sh.flags |= SHF_TLS
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_NOBITS
}
cmd/link: generate DWARF info using symbols This updates dwarf.go to generate debug information as symbols instead of directly writing to the output file. This should make it easier to move generation of some of the debug info into the compiler. Change-Id: Id2358988bfb689865ab4d68f82716f0676336df4 Reviewed-on: https://go-review.googlesource.com/20679 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-14 09:23:04 -07:00
if strings.HasPrefix(sect.Name, ".debug") {
sh.flags = 0
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if Linkmode != LinkExternal {
sh.addr = sect.Vaddr
}
sh.addralign = uint64(sect.Align)
sh.size = sect.Length
cmd/internal/obj, cmd/link, runtime: lots of TLS cleanup It's particularly nice to get rid of the android special cases in the linker. Change-Id: I516363af7ce8a6b2f196fe49cb8887ac787a6dad Reviewed-on: https://go-review.googlesource.com/14197 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-09-02 11:23:15 +12:00
if sect.Name != ".tbss" {
cmd/internal/obj: some platform independent bits of proper toolchain support for thread local storage Also simplifies some silliness around making the .tbss section wrt internal vs external linking. The "make TLS make sense" project has quite a few more steps to go. Issue #11270 Change-Id: Ia4fa135cb22d916728ead95bdbc0ebc1ae06f05c Reviewed-on: https://go-review.googlesource.com/13990 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-08-11 12:29:00 +12:00
sh.off = sect.Seg.Fileoff + sect.Vaddr - sect.Seg.Vaddr
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return sh
}
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
func elfshreloc(arch *sys.Arch, sect *Section) *ElfShdr {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// If main section is SHT_NOBITS, nothing to relocate.
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// Also nothing to relocate in .shstrtab or notes.
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if sect.Vaddr >= sect.Seg.Vaddr+sect.Seg.Filelen {
return nil
}
if sect.Name == ".shstrtab" || sect.Name == ".tbss" {
return nil
}
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
if sect.Elfsect.type_ == SHT_NOTE {
return nil
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
var typ int
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
if elfRelType == ".rela" {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
typ = SHT_RELA
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
} else {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
typ = SHT_REL
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(elfRelType + sect.Name)
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
// There could be multiple text sections but each needs
// its own .rela.text.
if sect.Name == ".text" {
if sh.info != 0 && sh.info != uint32(sect.Elfsect.shnum) {
sh = elfshnamedup(elfRelType + sect.Name)
}
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = uint32(typ)
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.entsize = uint64(arch.RegSize) * 2
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if typ == SHT_RELA {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.entsize += uint64(arch.RegSize)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".symtab").shnum)
cmd/link: replace interface{} fields with concrete types The LSym.Section and Section.Elfsect fields were defined as interface{} but always had the same concrete type (*Section and *ElfShdr respectively) so just define them with that type. Reduces size of LSym from 328 to 320 bytes and reduces best-of-10 maxresident size from 246028k to 238036k when linking libstd.so. Change-Id: Ie7112c53e4c2c7ce5fe233b81372aa5633f572e8 Reviewed-on: https://go-review.googlesource.com/10410 Reviewed-by: Minux Ma <minux@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-27 12:04:25 +12:00
sh.info = uint32(sect.Elfsect.shnum)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.off = sect.Reloff
sh.size = sect.Rellen
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.addralign = uint64(arch.RegSize)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
return sh
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func elfrelocsect(ctxt *Link, sect *Section, syms []*Symbol) {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// If main section is SHT_NOBITS, nothing to relocate.
// Also nothing to relocate in .shstrtab.
if sect.Vaddr >= sect.Seg.Vaddr+sect.Seg.Filelen {
return
}
if sect.Name == ".shstrtab" {
return
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
sect.Reloff = uint64(ctxt.Out.Offset())
cmd/link: process data symbols with slices First (and largest single) step to switching cmd/link from linked lists of symbols to slices. Sort sections independently and concurrently. This reduces jujud link times on linux/amd64 by ~4%. Updates #15374 Change-Id: I452bc8f33081039468636502fe3c1cc8d6ed9efa Reviewed-on: https://go-review.googlesource.com/22205 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-04-18 14:50:14 -04:00
for i, s := range syms {
if !s.Attr.Reachable() {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
continue
}
cmd/link: process data symbols with slices First (and largest single) step to switching cmd/link from linked lists of symbols to slices. Sort sections independently and concurrently. This reduces jujud link times on linux/amd64 by ~4%. Updates #15374 Change-Id: I452bc8f33081039468636502fe3c1cc8d6ed9efa Reviewed-on: https://go-review.googlesource.com/22205 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-04-18 14:50:14 -04:00
if uint64(s.Value) >= sect.Vaddr {
syms = syms[i:]
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
break
}
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
eaddr := int32(sect.Vaddr + sect.Length)
cmd/link: process data symbols with slices First (and largest single) step to switching cmd/link from linked lists of symbols to slices. Sort sections independently and concurrently. This reduces jujud link times on linux/amd64 by ~4%. Updates #15374 Change-Id: I452bc8f33081039468636502fe3c1cc8d6ed9efa Reviewed-on: https://go-review.googlesource.com/22205 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-04-18 14:50:14 -04:00
for _, sym := range syms {
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
if !sym.Attr.Reachable() {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
continue
}
if sym.Value >= int64(eaddr) {
break
}
cmd/link: move declarations into loops (Split out from CL 22205.) Change-Id: Id32698f48ce02b55c15b6f2842215e0ffdbf425b Reviewed-on: https://go-review.googlesource.com/22298 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-20 10:36:27 -04:00
for ri := 0; ri < len(sym.R); ri++ {
r := &sym.R[ri]
cmd/link: refactor *reloc * use bool instead of int if it's adequate. * remove blank lines. Change-Id: Ic4a5644a33ed9fc7ce388ef8ba15f1732446fcfc Reviewed-on: https://go-review.googlesource.com/59375 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-08-27 22:00:00 +09:00
if r.Done {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
continue
}
if r.Xsym == nil {
[dev.debug] cmd/compile: better DWARF with optimizations on Debuggers use DWARF information to find local variables on the stack and in registers. Prior to this CL, the DWARF information for functions claimed that all variables were on the stack at all times. That's incorrect when optimizations are enabled, and results in debuggers showing data that is out of date or complete gibberish. After this CL, the compiler is capable of representing variable locations more accurately, and attempts to do so. Due to limitations of the SSA backend, it's not possible to be completely correct. There are a number of problems in the current design. One of the easier to understand is that variable names currently must be attached to an SSA value, but not all assignments in the source code actually result in machine code. For example: type myint int var a int b := myint(int) and b := (*uint64)(unsafe.Pointer(a)) don't generate machine code because the underlying representation is the same, so the correct value of b will not be set when the user would expect. Generating the more precise debug information is behind a flag, dwarflocationlists. Because of the issues described above, setting the flag may not make the debugging experience much better, and may actually make it worse in cases where the variable actually is on the stack and the more complicated analysis doesn't realize it. A number of changes are included: - Add a new pseudo-instruction, RegKill, which indicates that the value in the register has been clobbered. - Adjust regalloc to emit RegKills in the right places. Significantly, this means that phis are mixed with StoreReg and RegKills after regalloc. - Track variable decomposition in ssa.LocalSlots. - After the SSA backend is done, analyze the result and build location lists for each LocalSlot. - After assembly is done, update the location lists with the assembled PC offsets, recompose variables, and build DWARF location lists. Emit the list as a new linker symbol, one per function. - In the linker, aggregate the location lists into a .debug_loc section. TODO: - currently disabled for non-X86/AMD64 because there are no data tables. go build -toolexec 'toolstash -cmp' -a std succeeds. With -dwarflocationlists false: before: f02812195637909ff675782c0b46836a8ff01976 after: 06f61e8112a42ac34fb80e0c818b3cdb84a5e7ec benchstat -geomean /tmp/220352263 /tmp/621364410 completed 15 of 15, estimated time remaining 0s (eta 3:52PM) name old time/op new time/op delta Template 199ms ± 3% 198ms ± 2% ~ (p=0.400 n=15+14) Unicode 96.6ms ± 5% 96.4ms ± 5% ~ (p=0.838 n=15+15) GoTypes 653ms ± 2% 647ms ± 2% ~ (p=0.102 n=15+14) Flate 133ms ± 6% 129ms ± 3% -2.62% (p=0.041 n=15+15) GoParser 164ms ± 5% 159ms ± 3% -3.05% (p=0.000 n=15+15) Reflect 428ms ± 4% 422ms ± 3% ~ (p=0.156 n=15+13) Tar 123ms ±10% 124ms ± 8% ~ (p=0.461 n=15+15) XML 228ms ± 3% 224ms ± 3% -1.57% (p=0.045 n=15+15) [Geo mean] 206ms 377ms +82.86% name old user-time/op new user-time/op delta Template 292ms ±10% 301ms ±12% ~ (p=0.189 n=15+15) Unicode 166ms ±37% 158ms ±14% ~ (p=0.418 n=15+14) GoTypes 962ms ± 6% 963ms ± 7% ~ (p=0.976 n=15+15) Flate 207ms ±19% 200ms ±14% ~ (p=0.345 n=14+15) GoParser 246ms ±22% 240ms ±15% ~ (p=0.587 n=15+15) Reflect 611ms ±13% 587ms ±14% ~ (p=0.085 n=15+13) Tar 211ms ±12% 217ms ±14% ~ (p=0.355 n=14+15) XML 335ms ±15% 320ms ±18% ~ (p=0.169 n=15+15) [Geo mean] 317ms 583ms +83.72% name old alloc/op new alloc/op delta Template 40.2MB ± 0% 40.2MB ± 0% -0.15% (p=0.000 n=14+15) Unicode 29.2MB ± 0% 29.3MB ± 0% ~ (p=0.624 n=15+15) GoTypes 114MB ± 0% 114MB ± 0% -0.15% (p=0.000 n=15+14) Flate 25.7MB ± 0% 25.6MB ± 0% -0.18% (p=0.000 n=13+15) GoParser 32.2MB ± 0% 32.2MB ± 0% -0.14% (p=0.003 n=15+15) Reflect 77.8MB ± 0% 77.9MB ± 0% ~ (p=0.061 n=15+15) Tar 27.1MB ± 0% 27.0MB ± 0% -0.11% (p=0.029 n=15+15) XML 42.7MB ± 0% 42.5MB ± 0% -0.29% (p=0.000 n=15+15) [Geo mean] 42.1MB 75.0MB +78.05% name old allocs/op new allocs/op delta Template 402k ± 1% 398k ± 0% -0.91% (p=0.000 n=15+15) Unicode 344k ± 1% 344k ± 0% ~ (p=0.715 n=15+14) GoTypes 1.18M ± 0% 1.17M ± 0% -0.91% (p=0.000 n=15+14) Flate 243k ± 0% 240k ± 1% -1.05% (p=0.000 n=13+15) GoParser 327k ± 1% 324k ± 1% -0.96% (p=0.000 n=15+15) Reflect 984k ± 1% 982k ± 0% ~ (p=0.050 n=15+15) Tar 261k ± 1% 259k ± 1% -0.77% (p=0.000 n=15+15) XML 411k ± 0% 404k ± 1% -1.55% (p=0.000 n=15+15) [Geo mean] 439k 755k +72.01% name old text-bytes new text-bytes delta HelloSize 694kB ± 0% 694kB ± 0% -0.00% (p=0.000 n=15+15) name old data-bytes new data-bytes delta HelloSize 5.55kB ± 0% 5.55kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 133kB ± 0% 133kB ± 0% ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.04MB ± 0% 1.04MB ± 0% ~ (all equal) Change-Id: I991fc553ef175db46bb23b2128317bbd48de70d8 Reviewed-on: https://go-review.googlesource.com/41770 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-07-21 18:30:19 -04:00
Errorf(sym, "missing xsym in relocation %#v %#v", r.Sym.Name, sym)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
continue
}
cmd/link: always resolve functions locally when linking dynamically When dynamically linking, we want references to functions defined in this module to always be to the function object, not to the PLT. We force this by writing an additional local symbol for every global function symbol and making all relocations against the global symbol refer to this local symbol instead. This is approximately equivalent to the ELF linker -Bsymbolic-functions option, but that is buggy on several platforms. Change-Id: Ie6983eb4d1947f8543736fd349f9a90df3cce91a Reviewed-on: https://go-review.googlesource.com/16436 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-10-29 12:17:43 +13:00
if r.Xsym.ElfsymForReloc() == 0 {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
Errorf(sym, "reloc %d (%s) to non-elf symbol %s (outer=%s) %d (%s)", r.Type, RelocName(ctxt.Arch, r.Type), r.Sym.Name, r.Xsym.Name, r.Sym.Type, r.Sym.Type)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
}
if !r.Xsym.Attr.Reachable() {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
Errorf(sym, "unreachable reloc %d (%s) target %v", r.Type, RelocName(ctxt.Arch, r.Type), r.Xsym.Name)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: refactor *reloc * use bool instead of int if it's adequate. * remove blank lines. Change-Id: Ic4a5644a33ed9fc7ce388ef8ba15f1732446fcfc Reviewed-on: https://go-review.googlesource.com/59375 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-08-27 22:00:00 +09:00
if !Thearch.Elfreloc1(ctxt, r, int64(uint64(sym.Value+int64(r.Off))-sect.Vaddr)) {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
Errorf(sym, "unsupported obj reloc %d (%s)/%d to %s", r.Type, RelocName(ctxt.Arch, r.Type), r.Siz, r.Sym.Name)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
sect.Rellen = uint64(ctxt.Out.Offset()) - sect.Reloff
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func Elfemitreloc(ctxt *Link) {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
for ctxt.Out.Offset()&7 != 0 {
ctxt.Out.Write8(0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segtext.Sections {
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
if sect.Name == ".text" {
elfrelocsect(ctxt, sect, ctxt.Textp)
} else {
elfrelocsect(ctxt, sect, datap)
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrodata.Sections {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
elfrelocsect(ctxt, sect, datap)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrelrodata.Sections {
cmd/link: introduce a rel.ro segment When internally linking with using rel.ro sections, this segment covers the sections. To do this, move to other read-only sections, SELFROSECT and SMACHOPLT, out of the way. Part of adding PIE internal linking on linux/amd64. Change-Id: I4fb3d180e92f7e801789ab89864010faf5a2cb6d Reviewed-on: https://go-review.googlesource.com/28538 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-05 23:29:16 -04:00
elfrelocsect(ctxt, sect, datap)
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdata.Sections {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
elfrelocsect(ctxt, sect, datap)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdwarf.Sections {
cmd/link: remove Symbol.Next Bye bye one more class of linked list manipulation! Change-Id: I2412b224c847dd640f9253125d30cd5f911ce00c Reviewed-on: https://go-review.googlesource.com/27414 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Michael Matloob <matloob@golang.org>
2016-04-22 10:31:14 +12:00
elfrelocsect(ctxt, sect, dwarfp)
cmd/link: generate DWARF info using symbols This updates dwarf.go to generate debug information as symbols instead of directly writing to the output file. This should make it easier to move generation of some of the debug info into the compiler. Change-Id: Id2358988bfb689865ab4d68f82716f0676336df4 Reviewed-on: https://go-review.googlesource.com/20679 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-14 09:23:04 -07:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func addgonote(ctxt *Link, sectionName string, tag uint32, desc []byte) {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s := ctxt.Syms.Lookup(sectionName, 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// namesz
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, uint32(len(ELF_NOTE_GO_NAME)))
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// descsz
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, uint32(len(desc)))
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// tag
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
s.AddUint32(ctxt.Arch, tag)
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
// name + padding
s.P = append(s.P, ELF_NOTE_GO_NAME...)
for len(s.P)%4 != 0 {
s.P = append(s.P, 0)
}
// desc + padding
s.P = append(s.P, desc...)
for len(s.P)%4 != 0 {
s.P = append(s.P, 0)
}
s.Size = int64(len(s.P))
cmd/link: set correct alignment of ELF note section Otherwise the default computation in symalign kicked in, setting the alignment to be too high. This didn't matter with GNU ld, which put each loadable note into a separate PT_NOTE segment, but it did matter with gold which accumulated them all into a single PT_NOTE segment, respecting the requested alignment. In the single PT_NOTE segment generated by gold, the incorrect section alignment made the notes unreadable. Fixes #21564 Change-Id: I15eb408bb04a2566c9fdfb6828e14188d9ef2280 Reviewed-on: https://go-review.googlesource.com/58290 Reviewed-by: Russ Cox <rsc@golang.org>
2017-08-23 17:44:51 -07:00
s.Align = 4
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func (ctxt *Link) doelf() {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if !Iself {
return
}
/* predefine strings we need for section headers */
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
shstrtab := ctxt.Syms.Lookup(".shstrtab", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
shstrtab.Type = SELFROSECT
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
shstrtab.Attr |= AttrReachable
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, "")
Addstring(shstrtab, ".text")
Addstring(shstrtab, ".noptrdata")
Addstring(shstrtab, ".data")
Addstring(shstrtab, ".bss")
Addstring(shstrtab, ".noptrbss")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link,runtime/cgo: enable PT_TLS generation on OpenBSD OpenBSD 6.0 and later have support for PT_TLS in ld.so(1). Now that OpenBSD 6.1 has been released, OpenBSD 5.9 is no longer officially supported and Go can start generating PT_TLS for OpenBSD cgo binaries. This also allows us to remove the workarounds in the OpenBSD cgo runtime. This change also removes the environ and progname exports - these are now provided directly by ld.so(1) itself. Fixes #19932 Change-Id: I42e75ef9feb5dcd4696add5233497e3cbc48ad52 Reviewed-on: https://go-review.googlesource.com/40331 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-04-12 01:10:01 +10:00
// generate .tbss section for dynamic internal linker or external
// linking, so that various binutils could correctly calculate
// PT_TLS size. See https://golang.org/issue/5200.
if !*FlagD || Linkmode == LinkExternal {
Addstring(shstrtab, ".tbss")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hnetbsd {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".note.netbsd.ident")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hopenbsd {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".note.openbsd.ident")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
if len(buildinfo) > 0 {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".note.gnu.build-id")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if *flagBuildid != "" {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".note.go.buildid")
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
}
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".elfdata")
Addstring(shstrtab, ".rodata")
cmd/internal/ld: put read-only relocated data into .data.rel.ro when making a shared object Currently Go produces shared libraries that cannot be shared between processes because they have relocations against the text segment (not text section). This fixes this by moving some data to sections with magic names recognized by the static linker. The change in genasmsym to add STYPELINK to the switch should fix things on darwin/arm64. Fixes #10914 Updates #9210 Change-Id: Iab4a6678dd04cec6114e683caac5cf31b1063309 Reviewed-on: https://go-review.googlesource.com/14306 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-21 13:07:19 +12:00
// See the comment about data.rel.ro.FOO section names in data.go.
relro_prefix := ""
if UseRelro() {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".data.rel.ro")
cmd/internal/ld: put read-only relocated data into .data.rel.ro when making a shared object Currently Go produces shared libraries that cannot be shared between processes because they have relocations against the text segment (not text section). This fixes this by moving some data to sections with magic names recognized by the static linker. The change in genasmsym to add STYPELINK to the switch should fix things on darwin/arm64. Fixes #10914 Updates #9210 Change-Id: Iab4a6678dd04cec6114e683caac5cf31b1063309 Reviewed-on: https://go-review.googlesource.com/14306 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-21 13:07:19 +12:00
relro_prefix = ".data.rel.ro"
}
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, relro_prefix+".typelink")
Addstring(shstrtab, relro_prefix+".itablink")
Addstring(shstrtab, relro_prefix+".gosymtab")
Addstring(shstrtab, relro_prefix+".gopclntab")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if Linkmode == LinkExternal {
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
*FlagD = true
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, elfRelType+".text")
Addstring(shstrtab, elfRelType+".rodata")
Addstring(shstrtab, elfRelType+relro_prefix+".typelink")
Addstring(shstrtab, elfRelType+relro_prefix+".itablink")
Addstring(shstrtab, elfRelType+relro_prefix+".gosymtab")
Addstring(shstrtab, elfRelType+relro_prefix+".gopclntab")
Addstring(shstrtab, elfRelType+".noptrdata")
Addstring(shstrtab, elfRelType+".data")
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
if UseRelro() {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, elfRelType+".data.rel.ro")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
// add a .note.GNU-stack section to mark the stack as non-executable
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".note.GNU-stack")
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
if Buildmode == BuildmodeShared {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".note.go.abihash")
Addstring(shstrtab, ".note.go.pkg-list")
Addstring(shstrtab, ".note.go.deps")
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
hasinitarr := *FlagLinkshared
cmd/6l: call runtime.addmoduledata from .init_array Change-Id: I09e84161d106960a69972f5fc845a1e40c28e58f Reviewed-on: https://go-review.googlesource.com/8331 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-04-01 14:17:43 +13:00
/* shared library initializer */
cmd/interal/ld: darwin c-archive buildmode support Uses ar to create an archive when -buildmode=c-archive. A small example (that I hope to turn into a test in a later CL): goarchive.go: package main import "fmt" import "C" func init() { fmt.Println("ran go init") } //export FuncInGo func FuncInGo() { fmt.Println("called a go function") } func main() { fmt.Println("in main") } This can be compiled with: go build -ldflags=-buildmode=c-archive -o=libgo.a goarchive.go main.c: #include <stdio.h> extern void FuncInGo(); int main(void) { printf("c hello\n"); FuncInGo(); printf("c goodbye\n"); return 0; } Can be compiled with: cc main.c libgo.a Apple provide a warning about the lack of PIE, but still produce a binary which runs and outputs (on darwin/amd64): c hello ran go init called a go function c goodbye Change-Id: I7611925f210a83afa6bd1e66a5601dd636a428c8 Reviewed-on: https://go-review.googlesource.com/8711 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-04-09 10:44:05 -04:00
switch Buildmode {
cmd/link: -buildmode=plugin support for linux This CL contains several linker changes to support creating plugins. It collects the exported plugin symbols provided by the compiler and includes them in the moduledata. It treats a binary as being dynamically linked if it imports the plugin package. This lets the dynamic linker de-duplicate symbols. Change-Id: I099b6f38dda26306eba5c41dbe7862f5a5918d95 Reviewed-on: https://go-review.googlesource.com/27820 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 21:58:45 -04:00
case BuildmodeCArchive, BuildmodeCShared, BuildmodeShared, BuildmodePlugin:
cmd/6l: call runtime.addmoduledata from .init_array Change-Id: I09e84161d106960a69972f5fc845a1e40c28e58f Reviewed-on: https://go-review.googlesource.com/8331 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-04-01 14:17:43 +13:00
hasinitarr = true
}
if hasinitarr {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".init_array")
Addstring(shstrtab, elfRelType+".init_array")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if !*FlagS {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".symtab")
Addstring(shstrtab, ".strtab")
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
dwarfaddshstrings(ctxt, shstrtab)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".shstrtab")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if !*FlagD { /* -d suppresses dynamic loader format */
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".interp")
Addstring(shstrtab, ".hash")
Addstring(shstrtab, ".got")
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.PPC64 {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".glink")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".got.plt")
Addstring(shstrtab, ".dynamic")
Addstring(shstrtab, ".dynsym")
Addstring(shstrtab, ".dynstr")
Addstring(shstrtab, elfRelType)
Addstring(shstrtab, elfRelType+".plt")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(shstrtab, ".plt")
Addstring(shstrtab, ".gnu.version")
Addstring(shstrtab, ".gnu.version_r")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* dynamic symbol table - first entry all zeros */
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s := ctxt.Syms.Lookup(".dynsym", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/link: eliminate a bunch of open coded elf64/rela switches We already have variables to track whether the target platform is 64-bit vs 32-bit or RELA vs REL, so no point in repeating the list of obscure architecture characters everywhere. Passes toolstash/buildall. Change-Id: I6a07f74188ac592ef229a7c65848a9ba93013cdb Reviewed-on: https://go-review.googlesource.com/21569 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-05 23:01:10 -07:00
if elf64 {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
s.Size += ELF64SYMSIZE
cmd/link: eliminate a bunch of open coded elf64/rela switches We already have variables to track whether the target platform is 64-bit vs 32-bit or RELA vs REL, so no point in repeating the list of obscure architecture characters everywhere. Passes toolstash/buildall. Change-Id: I6a07f74188ac592ef229a7c65848a9ba93013cdb Reviewed-on: https://go-review.googlesource.com/21569 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-05 23:01:10 -07:00
} else {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
s.Size += ELF32SYMSIZE
}
/* dynamic string table */
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".dynstr", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if s.Size == 0 {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Addstring(s, "")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
dynstr := s
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* relocation table */
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(elfRelType, 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* global offset table */
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".got", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFGOT // writable
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* ppc64 glink resolver */
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.PPC64 {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s := ctxt.Syms.Lookup(".glink", 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFRXSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
/* hash */
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".hash", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".got.plt", 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFSECT // writable
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".plt", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.PPC64 {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// In the ppc64 ABI, .plt is a data section
// written by the dynamic linker.
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFRXSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: remove global Ctxt variable This change threads the *ld.Link Ctxt variable through code in arch-specific packages. This removes all remaining uses of Ctxt, so remove the global variable too. This CL continues the work in golang.org/cl/27408 Updates #16818 Change-Id: I5f4536847a1825fd0b944824e8ae4e122ec0fb78 Reviewed-on: https://go-review.googlesource.com/27459 Run-TryBot: Michael Matloob <matloob@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-21 13:52:23 -04:00
Thearch.Elfsetupplt(ctxt)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(elfRelType+".plt", 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".gnu.version", 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".gnu.version_r", 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFROSECT
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* define dynamic elf table */
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s = ctxt.Syms.Lookup(".dynamic", 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrReachable
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SELFSECT // writable
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/*
* .dynamic table
*/
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_HASH, ctxt.Syms.Lookup(".hash", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_SYMTAB, ctxt.Syms.Lookup(".dynsym", 0))
cmd/link: eliminate a bunch of open coded elf64/rela switches We already have variables to track whether the target platform is 64-bit vs 32-bit or RELA vs REL, so no point in repeating the list of obscure architecture characters everywhere. Passes toolstash/buildall. Change-Id: I6a07f74188ac592ef229a7c65848a9ba93013cdb Reviewed-on: https://go-review.googlesource.com/21569 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-05 23:01:10 -07:00
if elf64 {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_SYMENT, ELF64SYMSIZE)
cmd/link: eliminate a bunch of open coded elf64/rela switches We already have variables to track whether the target platform is 64-bit vs 32-bit or RELA vs REL, so no point in repeating the list of obscure architecture characters everywhere. Passes toolstash/buildall. Change-Id: I6a07f74188ac592ef229a7c65848a9ba93013cdb Reviewed-on: https://go-review.googlesource.com/21569 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-05 23:01:10 -07:00
} else {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_SYMENT, ELF32SYMSIZE)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_STRTAB, ctxt.Syms.Lookup(".dynstr", 0))
elfwritedynentsymsize(ctxt, s, DT_STRSZ, ctxt.Syms.Lookup(".dynstr", 0))
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
if elfRelType == ".rela" {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_RELA, ctxt.Syms.Lookup(".rela", 0))
elfwritedynentsymsize(ctxt, s, DT_RELASZ, ctxt.Syms.Lookup(".rela", 0))
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_RELAENT, ELF64RELASIZE)
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
} else {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_REL, ctxt.Syms.Lookup(".rel", 0))
elfwritedynentsymsize(ctxt, s, DT_RELSZ, ctxt.Syms.Lookup(".rel", 0))
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_RELENT, ELF32RELSIZE)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/internal/ld: allow -r to override rpath when -linkshared Including having -r "" preventing rpath from being set at all. Change-Id: Ib40d7bf93a6e9ef21985c4a05b5703e4fbd1cd1b Reviewed-on: https://go-review.googlesource.com/8806 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-04-12 02:31:28 +02:00
if rpath.val != "" {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Elfwritedynent(ctxt, s, DT_RUNPATH, uint64(Addstring(dynstr, rpath.val)))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.PPC64 {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_PLTGOT, ctxt.Syms.Lookup(".plt", 0))
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
} else if ctxt.Arch.Family == sys.S390X {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_PLTGOT, ctxt.Syms.Lookup(".got", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
elfwritedynentsym(ctxt, s, DT_PLTGOT, ctxt.Syms.Lookup(".got.plt", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.PPC64 {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_PPC64_OPT, 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
// Solaris dynamic linker can't handle an empty .rela.plt if
// DT_JMPREL is emitted so we have to defer generation of DT_PLTREL,
// DT_PLTRELSZ, and DT_JMPREL dynamic entries until after we know the
// size of .rel(a).plt section.
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
Elfwritedynent(ctxt, s, DT_DEBUG, 0)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
if Buildmode == BuildmodeShared {
// The go.link.abihashbytes symbol will be pointed at the appropriate
// part of the .note.go.abihash section in data.go:func address().
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
s := ctxt.Syms.Lookup("go.link.abihashbytes", 0)
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrLocal
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
s.Type = SRODATA
cmd/link: pack LSym boolean attributes No performance improvement, but possibly more readable. Linking juju: tip: real 0m5.470s user 0m6.131s this: real 0m5.392s user 0m6.087s Change-Id: I578e94fbe6c11b19d79034c33b3db31d9689d439 Reviewed-on: https://go-review.googlesource.com/20108 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: David Crawshaw <crawshaw@golang.org>
2016-03-02 07:59:49 -05:00
s.Attr |= AttrSpecial
s.Attr |= AttrReachable
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
s.Size = int64(sha1.Size)
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
sort.Sort(byPkg(ctxt.Library))
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
h := sha1.New()
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
for _, l := range ctxt.Library {
cmd/link: hash packages after loading all symbols Conditioning on the plugin.Open symbol existing before loading all symbols means sometimes some packages don't have a hash value. Fixes #17928 Change-Id: I2722449aa58eca08a25117d3ce976f11f805b5ac Reviewed-on: https://go-review.googlesource.com/33925 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-12-05 23:20:20 -05:00
io.WriteString(h, l.hash)
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
addgonote(ctxt, ".note.go.abihash", ELF_NOTE_GOABIHASH_TAG, h.Sum([]byte{}))
addgonote(ctxt, ".note.go.pkg-list", ELF_NOTE_GOPKGLIST_TAG, pkglistfornote)
cmd/internal/ld: store the libraries a shared library was linked against in a note The motivation for this is the innocuous looking test case that is added. This creates a stack exe -> libdep2.so -> libdep.so -> libruntime.so. The problem comes from the fact that a function from libdep.so gets inlined all the way into exe. This (unsurprisingly) means that the object file for exe references symbols from libdep.so, which means that -ldep needs to be passed when linking exe and it isn't. The fix is simply to pass it -- there is no harm in passing it when it's not needed. The thing is, it's not clear at all in the current code to see how the linker can know that libdep2 is linked against libdep. It could look through the DT_NEEDED entries in libdep2 and try to guess which are Go libraries, but it feels better to be explicit. So this adds another SHT_NOTE section that lists the shared libraries a shared library was linked against, and makes sure the complete set of depended upon shared libraries is passed to the external linker. Change-Id: I79aa6f98b4db4721d657a7eb7b7f062269bf49e2 Reviewed-on: https://go-review.googlesource.com/10376 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-25 14:51:02 +12:00
var deplist []string
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
for _, shlib := range ctxt.Shlibs {
cmd/internal/ld: store the libraries a shared library was linked against in a note The motivation for this is the innocuous looking test case that is added. This creates a stack exe -> libdep2.so -> libdep.so -> libruntime.so. The problem comes from the fact that a function from libdep.so gets inlined all the way into exe. This (unsurprisingly) means that the object file for exe references symbols from libdep.so, which means that -ldep needs to be passed when linking exe and it isn't. The fix is simply to pass it -- there is no harm in passing it when it's not needed. The thing is, it's not clear at all in the current code to see how the linker can know that libdep2 is linked against libdep. It could look through the DT_NEEDED entries in libdep2 and try to guess which are Go libraries, but it feels better to be explicit. So this adds another SHT_NOTE section that lists the shared libraries a shared library was linked against, and makes sure the complete set of depended upon shared libraries is passed to the external linker. Change-Id: I79aa6f98b4db4721d657a7eb7b7f062269bf49e2 Reviewed-on: https://go-review.googlesource.com/10376 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-25 14:51:02 +12:00
deplist = append(deplist, filepath.Base(shlib.Path))
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
addgonote(ctxt, ".note.go.deps", ELF_NOTE_GODEPS_TAG, []byte(strings.Join(deplist, "\n")))
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
}
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if Linkmode == LinkExternal && *flagBuildid != "" {
addgonote(ctxt, ".note.go.buildid", ELF_NOTE_GOBUILDID_TAG, []byte(*flagBuildid))
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
// Do not write DT_NULL. elfdynhash will finish it.
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
func shsym(sh *ElfShdr, s *Symbol) {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
addr := Symaddr(s)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if sh.flags&SHF_ALLOC != 0 {
sh.addr = uint64(addr)
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.off = uint64(datoff(s, addr))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.size = uint64(s.Size)
}
func phsh(ph *ElfPhdr, sh *ElfShdr) {
ph.vaddr = sh.addr
ph.paddr = ph.vaddr
ph.off = sh.off
ph.filesz = sh.size
ph.memsz = sh.size
ph.align = sh.addralign
}
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
func Asmbelfsetup() {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* This null SHdr must appear before all others */
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshname("")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segtext.Sections {
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
// There could be multiple .text sections. Instead check the Elfsect
// field to determine if already has an ElfShdr and if not, create one.
if sect.Name == ".text" {
if sect.Elfsect == nil {
sect.Elfsect = elfshnamedup(sect.Name)
}
} else {
elfshalloc(sect)
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrodata.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshalloc(sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrelrodata.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshalloc(sect)
cmd/link: introduce a rel.ro segment When internally linking with using rel.ro sections, this segment covers the sections. To do this, move to other read-only sections, SELFROSECT and SMACHOPLT, out of the way. Part of adding PIE internal linking on linux/amd64. Change-Id: I4fb3d180e92f7e801789ab89864010faf5a2cb6d Reviewed-on: https://go-review.googlesource.com/28538 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-05 23:29:16 -04:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdata.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshalloc(sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdwarf.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshalloc(sect)
cmd/link: generate DWARF info using symbols This updates dwarf.go to generate debug information as symbols instead of directly writing to the output file. This should make it easier to move generation of some of the debug info into the compiler. Change-Id: Id2358988bfb689865ab4d68f82716f0676336df4 Reviewed-on: https://go-review.googlesource.com/20679 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-14 09:23:04 -07:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
func Asmbelf(ctxt *Link, symo int64) {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
eh := getElfEhdr()
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
switch ctxt.Arch.Family {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
default:
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
Exitf("unknown architecture in asmbelf: %v", ctxt.Arch.Family)
cmd/link: add support for GOARCH=mips{,le} Only internal linking without cgo is supported for now. Change-Id: I772d2ba496a613c78bee7e93f29e9538e6407bdc Reviewed-on: https://go-review.googlesource.com/31481 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2016-10-18 23:50:47 +02:00
case sys.MIPS, sys.MIPS64:
cmd/link: added support for mips64{,le} Only internal linking without cgo is supported for now. Change-Id: Ie6074a8ff3ec13605b72028f2d60758034f87185 Reviewed-on: https://go-review.googlesource.com/14444 Reviewed-by: Minux Ma <minux@golang.org>
2015-09-10 11:32:49 -04:00
eh.machine = EM_MIPS
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.ARM:
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.machine = EM_ARM
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.AMD64:
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.machine = EM_X86_64
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.ARM64:
cmd/7l: add the ARM64 linker Only internal linking without cgo is supported for now. Change-Id: I91eb1572c1ccc805db62fc4c29080df98797d51a Reviewed-on: https://go-review.googlesource.com/7048 Reviewed-by: Minux Ma <minux@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
2015-03-08 14:14:53 +01:00
eh.machine = EM_AARCH64
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.I386:
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.machine = EM_386
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.PPC64:
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.machine = EM_PPC64
cmd: add new common architecture representation Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-06 12:01:40 -07:00
case sys.S390X:
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
eh.machine = EM_S390
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/internal/ld: reserve space for package list note when -buildmode=shared This makes the intermediate object file a little bigger but it doesn't waste any space in the final shared library. Fixes #10691 Change-Id: Ic51a571d60291f1ac2dad1b50dba4679643168ae Reviewed-on: https://go-review.googlesource.com/9710 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-05 14:17:07 +12:00
elfreserve := int64(ELFRESERVE)
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
numtext := int64(0)
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segtext.Sections {
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
if sect.Name == ".text" {
numtext++
}
}
// If there are multiple text sections, extra space is needed
// in the elfreserve for the additional .text and .rela.text
// section headers. It can handle 4 extra now. Headers are
// 64 bytes.
if numtext > 4 {
elfreserve += elfreserve + numtext*64*2
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
startva := *FlagTextAddr - int64(HEADR)
cmd/internal/ld: reserve space for package list note when -buildmode=shared This makes the intermediate object file a little bigger but it doesn't waste any space in the final shared library. Fixes #10691 Change-Id: Ic51a571d60291f1ac2dad1b50dba4679643168ae Reviewed-on: https://go-review.googlesource.com/9710 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-05 14:17:07 +12:00
resoff := elfreserve
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev 796d0f2 on C->Go conversions. This replaces various awkward := initializations with plain var declarations. Checked bit-for-bit compatibility with toolstash + buildall. Change-Id: I601101d8177894adb9b0e3fb55dfe0ed4f544716 Reviewed-on: https://go-review.googlesource.com/6517 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-03-02 14:22:05 -05:00
var pph *ElfPhdr
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
var pnote *ElfPhdr
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if Linkmode == LinkExternal {
/* skip program headers */
eh.phoff = 0
eh.phentsize = 0
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
if Buildmode == BuildmodeShared {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".note.go.pkg-list")
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
sh.type_ = SHT_NOTE
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".note.go.abihash")
cmd/link/internal/ld: put abi hash into a note This makes for a more stable API for tools (including cmd/link itself) to extract the abi hash from a shared library and makes it possible at all for a library that has had the local symbol table removed. The existing note-writing code only supports writing notes into the very start of the object file so they are easy to find in core dumps. This doesn't apply to the "go" notes and means that all notes have to fit into a fixed size budget. That's annoying now we have more notes (and the next CL will add another one) so this does a little bit of work to make adding notes that do not have to go at the start of the file easier and moves the writing of the package list note over to that mechanism, which lets me revert a hack that increased the size budget mentioned above for -buildmode=shared builds. Change-Id: I6077a68d395c8a2bc43dec8506e73c71ef77d9b9 Reviewed-on: https://go-review.googlesource.com/10375 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-25 13:59:08 +12:00
sh.type_ = SHT_NOTE
sh.flags = SHF_ALLOC
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".note.go.deps")
cmd/internal/ld: store the libraries a shared library was linked against in a note The motivation for this is the innocuous looking test case that is added. This creates a stack exe -> libdep2.so -> libdep.so -> libruntime.so. The problem comes from the fact that a function from libdep.so gets inlined all the way into exe. This (unsurprisingly) means that the object file for exe references symbols from libdep.so, which means that -ldep needs to be passed when linking exe and it isn't. The fix is simply to pass it -- there is no harm in passing it when it's not needed. The thing is, it's not clear at all in the current code to see how the linker can know that libdep2 is linked against libdep. It could look through the DT_NEEDED entries in libdep2 and try to guess which are Go libraries, but it feels better to be explicit. So this adds another SHT_NOTE section that lists the shared libraries a shared library was linked against, and makes sure the complete set of depended upon shared libraries is passed to the external linker. Change-Id: I79aa6f98b4db4721d657a7eb7b7f062269bf49e2 Reviewed-on: https://go-review.googlesource.com/10376 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-05-25 14:51:02 +12:00
sh.type_ = SHT_NOTE
cmd/internal/ld: put the list of packages built into a shared library into an ELF note Change-Id: I611f7dec2109dc7e2f090ced0a1dca3d4b577134 Reviewed-on: https://go-review.googlesource.com/9520 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-04-29 22:58:52 +12:00
}
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if *flagBuildid != "" {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".note.go.buildid")
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
sh.type_ = SHT_NOTE
sh.flags = SHF_ALLOC
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
goto elfobj
}
/* program header info */
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
pph = newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
pph.type_ = PT_PHDR
pph.flags = PF_R
pph.off = uint64(eh.ehsize)
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
pph.vaddr = uint64(*FlagTextAddr) - uint64(HEADR) + pph.off
pph.paddr = uint64(*FlagTextAddr) - uint64(HEADR) + pph.off
pph.align = uint64(*FlagRound)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/*
* PHDR must be in a loaded segment. Adjust the text
* segment boundaries downwards to include it.
* Except on NaCl where it must not be loaded.
*/
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype != objabi.Hnacl {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
o := int64(Segtext.Vaddr - pph.vaddr)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
Segtext.Vaddr -= uint64(o)
Segtext.Length += uint64(o)
o = int64(Segtext.Fileoff - pph.off)
Segtext.Fileoff -= uint64(o)
Segtext.Filelen += uint64(o)
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if !*FlagD { /* -d suppresses dynamic loader format */
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* interpreter */
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".interp")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_PROGBITS
sh.flags = SHF_ALLOC
sh.addralign = 1
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
if interpreter == "" {
cmd/link, cmd/internal/obj: give Headtype a type Separate out windows/windowsgui properly so we are not encoding some of the Headtype value in a separate headstring global. Remove one of the two copies of the variable from cmd/link. Remove duplicate string to headtype list. Change-Id: Ifa20fb9652a1dc95161e154aac11f15ad0f709d0 Reviewed-on: https://go-review.googlesource.com/28853 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-09 06:20:44 -04:00
switch Headtype {
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hlinux:
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
interpreter = Thearch.Linuxdynld
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hfreebsd:
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
interpreter = Thearch.Freebsddynld
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hnetbsd:
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
interpreter = Thearch.Netbsddynld
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hopenbsd:
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
interpreter = Thearch.Openbsddynld
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hdragonfly:
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
interpreter = Thearch.Dragonflydynld
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hsolaris:
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
interpreter = Thearch.Solarisdynld
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
cmd/link: don't record interpreter in flagInterpreter Keep flagInterpreter unchanged after flag parsing. This lets us replace flagInterpreterSet with flagInterpreter != "". Change-Id: Ifd2edbb2ce0011e97276ca18281b8ffbabde1c50 Reviewed-on: https://go-review.googlesource.com/27563 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-08-22 22:29:24 -07:00
resoff -= int64(elfinterp(sh, uint64(startva), uint64(resoff), interpreter))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
ph := newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ph.type_ = PT_INTERP
ph.flags = PF_R
phsh(ph, sh)
}
pnote = nil
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hnetbsd || Headtype == objabi.Hopenbsd {
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev 796d0f2 on C->Go conversions. This replaces various awkward := initializations with plain var declarations. Checked bit-for-bit compatibility with toolstash + buildall. Change-Id: I601101d8177894adb9b0e3fb55dfe0ed4f544716 Reviewed-on: https://go-review.googlesource.com/6517 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2015-03-02 14:22:05 -05:00
var sh *ElfShdr
cmd/link, cmd/internal/obj: give Headtype a type Separate out windows/windowsgui properly so we are not encoding some of the Headtype value in a separate headstring global. Remove one of the two copies of the variable from cmd/link. Remove duplicate string to headtype list. Change-Id: Ifa20fb9652a1dc95161e154aac11f15ad0f709d0 Reviewed-on: https://go-review.googlesource.com/28853 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-09 06:20:44 -04:00
switch Headtype {
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hnetbsd:
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".note.netbsd.ident")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
resoff -= int64(elfnetbsdsig(sh, uint64(startva), uint64(resoff)))
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
case objabi.Hopenbsd:
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".note.openbsd.ident")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
resoff -= int64(elfopenbsdsig(sh, uint64(startva), uint64(resoff)))
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
pnote = newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
pnote.type_ = PT_NOTE
pnote.flags = PF_R
phsh(pnote, sh)
}
if len(buildinfo) > 0 {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".note.gnu.build-id")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
resoff -= int64(elfbuildinfo(sh, uint64(startva), uint64(resoff)))
if pnote == nil {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
pnote = newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
pnote.type_ = PT_NOTE
pnote.flags = PF_R
}
phsh(pnote, sh)
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if *flagBuildid != "" {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".note.go.buildid")
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
resoff -= int64(elfgobuildid(sh, uint64(startva), uint64(resoff)))
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
pnote := newElfPhdr()
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
pnote.type_ = PT_NOTE
pnote.flags = PF_R
phsh(pnote, sh)
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// Additions to the reserved area must be above this line.
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
elfphload(&Segtext)
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
if len(Segrodata.Sections) > 0 {
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
elfphload(&Segrodata)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
if len(Segrelrodata.Sections) > 0 {
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
elfphload(&Segrelrodata)
elfphrelro(&Segrelrodata)
cmd/link: introduce a rel.ro segment When internally linking with using rel.ro sections, this segment covers the sections. To do this, move to other read-only sections, SELFROSECT and SMACHOPLT, out of the way. Part of adding PIE internal linking on linux/amd64. Change-Id: I4fb3d180e92f7e801789ab89864010faf5a2cb6d Reviewed-on: https://go-review.googlesource.com/28538 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-05 23:29:16 -04:00
}
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
elfphload(&Segdata)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* Dynamic linking sections */
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if !*FlagD {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".dynsym")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_DYNSYM
sh.flags = SHF_ALLOC
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.entsize = ELF64SYMSIZE
} else {
sh.entsize = ELF32SYMSIZE
}
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.addralign = uint64(ctxt.Arch.RegSize)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynstr").shnum)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// sh->info = index of first non-local symbol (number of local symbols)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".dynsym", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".dynstr")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_STRTAB
sh.flags = SHF_ALLOC
sh.addralign = 1
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".dynstr", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if elfverneed != 0 {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".gnu.version")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_GNU_VERSYM
sh.flags = SHF_ALLOC
sh.addralign = 2
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynsym").shnum)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.entsize = 2
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".gnu.version", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".gnu.version_r")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_GNU_VERNEED
sh.flags = SHF_ALLOC
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.addralign = uint64(ctxt.Arch.RegSize)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.info = uint32(elfverneed)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynstr").shnum)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".gnu.version_r", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
if elfRelType == ".rela" {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".rela.plt")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_RELA
sh.flags = SHF_ALLOC
sh.entsize = ELF64RELASIZE
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.addralign = uint64(ctxt.Arch.RegSize)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynsym").shnum)
sh.info = uint32(elfshname(".plt").shnum)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".rela.plt", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".rela")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_RELA
sh.flags = SHF_ALLOC
sh.entsize = ELF64RELASIZE
sh.addralign = 8
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynsym").shnum)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".rela", 0))
cmd/link: define a variable for the target platform's elf relocation type Rather than having half a dozen switch statements. Also remove some c2go dregs. Change-Id: I19af5b64f73369126020e15421c34cad5bbcfbf8 Reviewed-on: https://go-review.googlesource.com/21442 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-04-03 19:32:31 +12:00
} else {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".rel.plt")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_REL
sh.flags = SHF_ALLOC
sh.entsize = ELF32RELSIZE
sh.addralign = 4
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynsym").shnum)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".rel.plt", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".rel")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_REL
sh.flags = SHF_ALLOC
sh.entsize = ELF32RELSIZE
sh.addralign = 4
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynsym").shnum)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".rel", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
if eh.machine == EM_PPC64 {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".glink")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_PROGBITS
sh.flags = SHF_ALLOC + SHF_EXECINSTR
sh.addralign = 4
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".glink", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".plt")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_PROGBITS
sh.flags = SHF_ALLOC + SHF_EXECINSTR
if eh.machine == EM_X86_64 {
sh.entsize = 16
cmd/link/internal/ld: add s390x support Introduces the new relocation variant RV_390_DBL which indicates that the relocation value should be shifted right by 1 (to make it 2-byte aligned). Change-Id: I03fa96b4759ee19330c5298c3720746622fb1a03 Reviewed-on: https://go-review.googlesource.com/20878 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-03-18 16:57:54 -04:00
} else if eh.machine == EM_S390 {
sh.entsize = 32
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else if eh.machine == EM_PPC64 {
// On ppc64, this is just a table of addresses
// filled by the dynamic linker
sh.type_ = SHT_NOBITS
sh.flags = SHF_ALLOC + SHF_WRITE
sh.entsize = 8
} else {
sh.entsize = 4
}
sh.addralign = sh.entsize
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".plt", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// On ppc64, .got comes from the input files, so don't
// create it here, and .got.plt is not used.
if eh.machine != EM_PPC64 {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".got")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_PROGBITS
sh.flags = SHF_ALLOC + SHF_WRITE
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.entsize = uint64(ctxt.Arch.RegSize)
sh.addralign = uint64(ctxt.Arch.RegSize)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".got", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".got.plt")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_PROGBITS
sh.flags = SHF_ALLOC + SHF_WRITE
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.entsize = uint64(ctxt.Arch.RegSize)
sh.addralign = uint64(ctxt.Arch.RegSize)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".got.plt", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".hash")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_HASH
sh.flags = SHF_ALLOC
sh.entsize = 4
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.addralign = uint64(ctxt.Arch.RegSize)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynsym").shnum)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".hash", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
/* sh and PT_DYNAMIC for .dynamic section */
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".dynamic")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_DYNAMIC
sh.flags = SHF_ALLOC + SHF_WRITE
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.entsize = 2 * uint64(ctxt.Arch.RegSize)
sh.addralign = uint64(ctxt.Arch.RegSize)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".dynstr").shnum)
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".dynamic", 0))
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
ph := newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ph.type_ = PT_DYNAMIC
ph.flags = PF_R + PF_W
phsh(ph, sh)
/*
* Thread-local storage segment (really just size).
*/
cmd/link,runtime/cgo: enable PT_TLS generation on OpenBSD OpenBSD 6.0 and later have support for PT_TLS in ld.so(1). Now that OpenBSD 6.1 has been released, OpenBSD 5.9 is no longer officially supported and Go can start generating PT_TLS for OpenBSD cgo binaries. This also allows us to remove the workarounds in the OpenBSD cgo runtime. This change also removes the environ and progname exports - these are now provided directly by ld.so(1) itself. Fixes #19932 Change-Id: I42e75ef9feb5dcd4696add5233497e3cbc48ad52 Reviewed-on: https://go-review.googlesource.com/40331 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-04-12 01:10:01 +10:00
tlssize := uint64(0)
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdata.Sections {
cmd/link,runtime/cgo: enable PT_TLS generation on OpenBSD OpenBSD 6.0 and later have support for PT_TLS in ld.so(1). Now that OpenBSD 6.1 has been released, OpenBSD 5.9 is no longer officially supported and Go can start generating PT_TLS for OpenBSD cgo binaries. This also allows us to remove the workarounds in the OpenBSD cgo runtime. This change also removes the environ and progname exports - these are now provided directly by ld.so(1) itself. Fixes #19932 Change-Id: I42e75ef9feb5dcd4696add5233497e3cbc48ad52 Reviewed-on: https://go-review.googlesource.com/40331 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-04-12 01:10:01 +10:00
if sect.Name == ".tbss" {
tlssize = sect.Length
cmd/internal/obj: some platform independent bits of proper toolchain support for thread local storage Also simplifies some silliness around making the .tbss section wrt internal vs external linking. The "make TLS make sense" project has quite a few more steps to go. Issue #11270 Change-Id: Ia4fa135cb22d916728ead95bdbc0ebc1ae06f05c Reviewed-on: https://go-review.googlesource.com/13990 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-08-11 12:29:00 +12:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link,runtime/cgo: enable PT_TLS generation on OpenBSD OpenBSD 6.0 and later have support for PT_TLS in ld.so(1). Now that OpenBSD 6.1 has been released, OpenBSD 5.9 is no longer officially supported and Go can start generating PT_TLS for OpenBSD cgo binaries. This also allows us to remove the workarounds in the OpenBSD cgo runtime. This change also removes the environ and progname exports - these are now provided directly by ld.so(1) itself. Fixes #19932 Change-Id: I42e75ef9feb5dcd4696add5233497e3cbc48ad52 Reviewed-on: https://go-review.googlesource.com/40331 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-04-12 01:10:01 +10:00
if tlssize != 0 {
ph := newElfPhdr()
ph.type_ = PT_TLS
ph.flags = PF_R
ph.memsz = tlssize
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
ph.align = uint64(ctxt.Arch.RegSize)
cmd/link,runtime/cgo: enable PT_TLS generation on OpenBSD OpenBSD 6.0 and later have support for PT_TLS in ld.so(1). Now that OpenBSD 6.1 has been released, OpenBSD 5.9 is no longer officially supported and Go can start generating PT_TLS for OpenBSD cgo binaries. This also allows us to remove the workarounds in the OpenBSD cgo runtime. This change also removes the environ and progname exports - these are now provided directly by ld.so(1) itself. Fixes #19932 Change-Id: I42e75ef9feb5dcd4696add5233497e3cbc48ad52 Reviewed-on: https://go-review.googlesource.com/40331 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-04-12 01:10:01 +10:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hlinux {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
ph := newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ph.type_ = PT_GNU_STACK
ph.flags = PF_W + PF_R
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
ph.align = uint64(ctxt.Arch.RegSize)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
ph = newElfPhdr()
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
ph.type_ = PT_PAX_FLAGS
ph.flags = 0x2a00 // mprotect, randexec, emutramp disabled
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
ph.align = uint64(ctxt.Arch.RegSize)
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
} else if Headtype == objabi.Hsolaris {
cmd/link: non-executable stack support for Solaris Support the tagging of binaries created with the internal linker on Solaris as having a non-executable stack by writing a PT_SUNWSTACK program header. Fixes #16074 Change-Id: I3888f2153083385d04a52f341570f93e5738b276 Reviewed-on: https://go-review.googlesource.com/24142 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
2016-06-15 13:44:03 -07:00
ph := newElfPhdr()
ph.type_ = PT_SUNWSTACK
ph.flags = PF_W + PF_R
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
elfobj:
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".shstrtab")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_STRTAB
sh.addralign = 1
cmd/link: remove more unused ctxt parameters This time in elf.go. Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d Reviewed-on: https://go-review.googlesource.com/29450 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:57:53 +12:00
shsym(sh, ctxt.Syms.Lookup(".shstrtab", 0))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.shstrndx = uint16(sh.shnum)
// put these sections early in the list
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if !*FlagS {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshname(".symtab")
elfshname(".strtab")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segtext.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshbits(sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrodata.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshbits(sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrelrodata.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshbits(sect)
cmd/link: introduce a rel.ro segment When internally linking with using rel.ro sections, this segment covers the sections. To do this, move to other read-only sections, SELFROSECT and SMACHOPLT, out of the way. Part of adding PIE internal linking on linux/amd64. Change-Id: I4fb3d180e92f7e801789ab89864010faf5a2cb6d Reviewed-on: https://go-review.googlesource.com/28538 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-05 23:29:16 -04:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdata.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshbits(sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdwarf.Sections {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
elfshbits(sect)
cmd/link: generate DWARF info using symbols This updates dwarf.go to generate debug information as symbols instead of directly writing to the output file. This should make it easier to move generation of some of the debug info into the compiler. Change-Id: Id2358988bfb689865ab4d68f82716f0676336df4 Reviewed-on: https://go-review.googlesource.com/20679 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-14 09:23:04 -07:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
if Linkmode == LinkExternal {
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segtext.Sections {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
elfshreloc(ctxt.Arch, sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrodata.Sections {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
elfshreloc(ctxt.Arch, sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segrelrodata.Sections {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
elfshreloc(ctxt.Arch, sect)
cmd/link: introduce a rel.ro segment When internally linking with using rel.ro sections, this segment covers the sections. To do this, move to other read-only sections, SELFROSECT and SMACHOPLT, out of the way. Part of adding PIE internal linking on linux/amd64. Change-Id: I4fb3d180e92f7e801789ab89864010faf5a2cb6d Reviewed-on: https://go-review.googlesource.com/28538 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-05 23:29:16 -04:00
}
cmd/link: replace Segment's linked list of Sections with a slice Just noticed this in passing. Change-Id: I58fa828ef58598209ed4cbe4abc6f9f02ffc4844 Reviewed-on: https://go-review.googlesource.com/40896 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-04-18 21:52:06 +12:00
for _, sect := range Segdata.Sections {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
elfshreloc(ctxt.Arch, sect)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: remove Symbol.Next Bye bye one more class of linked list manipulation! Change-Id: I2412b224c847dd640f9253125d30cd5f911ce00c Reviewed-on: https://go-review.googlesource.com/27414 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Michael Matloob <matloob@golang.org>
2016-04-22 10:31:14 +12:00
for _, s := range dwarfp {
[dev.debug] cmd/compile: better DWARF with optimizations on Debuggers use DWARF information to find local variables on the stack and in registers. Prior to this CL, the DWARF information for functions claimed that all variables were on the stack at all times. That's incorrect when optimizations are enabled, and results in debuggers showing data that is out of date or complete gibberish. After this CL, the compiler is capable of representing variable locations more accurately, and attempts to do so. Due to limitations of the SSA backend, it's not possible to be completely correct. There are a number of problems in the current design. One of the easier to understand is that variable names currently must be attached to an SSA value, but not all assignments in the source code actually result in machine code. For example: type myint int var a int b := myint(int) and b := (*uint64)(unsafe.Pointer(a)) don't generate machine code because the underlying representation is the same, so the correct value of b will not be set when the user would expect. Generating the more precise debug information is behind a flag, dwarflocationlists. Because of the issues described above, setting the flag may not make the debugging experience much better, and may actually make it worse in cases where the variable actually is on the stack and the more complicated analysis doesn't realize it. A number of changes are included: - Add a new pseudo-instruction, RegKill, which indicates that the value in the register has been clobbered. - Adjust regalloc to emit RegKills in the right places. Significantly, this means that phis are mixed with StoreReg and RegKills after regalloc. - Track variable decomposition in ssa.LocalSlots. - After the SSA backend is done, analyze the result and build location lists for each LocalSlot. - After assembly is done, update the location lists with the assembled PC offsets, recompose variables, and build DWARF location lists. Emit the list as a new linker symbol, one per function. - In the linker, aggregate the location lists into a .debug_loc section. TODO: - currently disabled for non-X86/AMD64 because there are no data tables. go build -toolexec 'toolstash -cmp' -a std succeeds. With -dwarflocationlists false: before: f02812195637909ff675782c0b46836a8ff01976 after: 06f61e8112a42ac34fb80e0c818b3cdb84a5e7ec benchstat -geomean /tmp/220352263 /tmp/621364410 completed 15 of 15, estimated time remaining 0s (eta 3:52PM) name old time/op new time/op delta Template 199ms ± 3% 198ms ± 2% ~ (p=0.400 n=15+14) Unicode 96.6ms ± 5% 96.4ms ± 5% ~ (p=0.838 n=15+15) GoTypes 653ms ± 2% 647ms ± 2% ~ (p=0.102 n=15+14) Flate 133ms ± 6% 129ms ± 3% -2.62% (p=0.041 n=15+15) GoParser 164ms ± 5% 159ms ± 3% -3.05% (p=0.000 n=15+15) Reflect 428ms ± 4% 422ms ± 3% ~ (p=0.156 n=15+13) Tar 123ms ±10% 124ms ± 8% ~ (p=0.461 n=15+15) XML 228ms ± 3% 224ms ± 3% -1.57% (p=0.045 n=15+15) [Geo mean] 206ms 377ms +82.86% name old user-time/op new user-time/op delta Template 292ms ±10% 301ms ±12% ~ (p=0.189 n=15+15) Unicode 166ms ±37% 158ms ±14% ~ (p=0.418 n=15+14) GoTypes 962ms ± 6% 963ms ± 7% ~ (p=0.976 n=15+15) Flate 207ms ±19% 200ms ±14% ~ (p=0.345 n=14+15) GoParser 246ms ±22% 240ms ±15% ~ (p=0.587 n=15+15) Reflect 611ms ±13% 587ms ±14% ~ (p=0.085 n=15+13) Tar 211ms ±12% 217ms ±14% ~ (p=0.355 n=14+15) XML 335ms ±15% 320ms ±18% ~ (p=0.169 n=15+15) [Geo mean] 317ms 583ms +83.72% name old alloc/op new alloc/op delta Template 40.2MB ± 0% 40.2MB ± 0% -0.15% (p=0.000 n=14+15) Unicode 29.2MB ± 0% 29.3MB ± 0% ~ (p=0.624 n=15+15) GoTypes 114MB ± 0% 114MB ± 0% -0.15% (p=0.000 n=15+14) Flate 25.7MB ± 0% 25.6MB ± 0% -0.18% (p=0.000 n=13+15) GoParser 32.2MB ± 0% 32.2MB ± 0% -0.14% (p=0.003 n=15+15) Reflect 77.8MB ± 0% 77.9MB ± 0% ~ (p=0.061 n=15+15) Tar 27.1MB ± 0% 27.0MB ± 0% -0.11% (p=0.029 n=15+15) XML 42.7MB ± 0% 42.5MB ± 0% -0.29% (p=0.000 n=15+15) [Geo mean] 42.1MB 75.0MB +78.05% name old allocs/op new allocs/op delta Template 402k ± 1% 398k ± 0% -0.91% (p=0.000 n=15+15) Unicode 344k ± 1% 344k ± 0% ~ (p=0.715 n=15+14) GoTypes 1.18M ± 0% 1.17M ± 0% -0.91% (p=0.000 n=15+14) Flate 243k ± 0% 240k ± 1% -1.05% (p=0.000 n=13+15) GoParser 327k ± 1% 324k ± 1% -0.96% (p=0.000 n=15+15) Reflect 984k ± 1% 982k ± 0% ~ (p=0.050 n=15+15) Tar 261k ± 1% 259k ± 1% -0.77% (p=0.000 n=15+15) XML 411k ± 0% 404k ± 1% -1.55% (p=0.000 n=15+15) [Geo mean] 439k 755k +72.01% name old text-bytes new text-bytes delta HelloSize 694kB ± 0% 694kB ± 0% -0.00% (p=0.000 n=15+15) name old data-bytes new data-bytes delta HelloSize 5.55kB ± 0% 5.55kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 133kB ± 0% 133kB ± 0% ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.04MB ± 0% 1.04MB ± 0% ~ (all equal) Change-Id: I991fc553ef175db46bb23b2128317bbd48de70d8 Reviewed-on: https://go-review.googlesource.com/41770 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-07-21 18:30:19 -04:00
if len(s.R) > 0 || s.Type == SDWARFINFO || s.Type == SDWARFLOC {
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
elfshreloc(ctxt.Arch, s.Sect)
cmd/link: generate DWARF info using symbols This updates dwarf.go to generate debug information as symbols instead of directly writing to the output file. This should make it easier to move generation of some of the debug info into the compiler. Change-Id: Id2358988bfb689865ab4d68f82716f0676336df4 Reviewed-on: https://go-review.googlesource.com/20679 Reviewed-by: David Crawshaw <crawshaw@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-03-14 09:23:04 -07:00
}
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
// add a .note.GNU-stack section to mark the stack as non-executable
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".note.GNU-stack")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_PROGBITS
sh.addralign = 1
sh.flags = 0
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if !*FlagS {
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh := elfshname(".symtab")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_SYMTAB
sh.off = uint64(symo)
sh.size = uint64(Symsize)
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
sh.addralign = uint64(ctxt.Arch.RegSize)
sh.entsize = 8 + 2*uint64(ctxt.Arch.RegSize)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh.link = uint32(elfshname(".strtab").shnum)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.info = uint32(elfglobalsymndx)
cmd/link: replace ld.Link.Diag with ld.Errorf Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol parameter. This removes most uses of Cursym and means the *Link context object is needed in fewer parts of the linker. All transformations done manually, as wiring Cursym is tricky. Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7 Reviewed-on: https://go-review.googlesource.com/29369 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 09:39:33 -04:00
sh = elfshname(".strtab")
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
sh.type_ = SHT_STRTAB
sh.off = uint64(symo) + uint64(Symsize)
sh.size = uint64(len(Elfstrdat))
sh.addralign = 1
}
/* Main header */
eh.ident[EI_MAG0] = '\177'
eh.ident[EI_MAG1] = 'E'
eh.ident[EI_MAG2] = 'L'
eh.ident[EI_MAG3] = 'F'
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hfreebsd {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.ident[EI_OSABI] = ELFOSABI_FREEBSD
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
} else if Headtype == objabi.Hnetbsd {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.ident[EI_OSABI] = ELFOSABI_NETBSD
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
} else if Headtype == objabi.Hopenbsd {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.ident[EI_OSABI] = ELFOSABI_OPENBSD
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
} else if Headtype == objabi.Hdragonfly {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.ident[EI_OSABI] = ELFOSABI_NONE
}
cmd/internal/ld: change elf64 from int to bool Change-Id: Iaf2dba7d699a8d52f91ce10222ab0d1a0f1f21fc Reviewed-on: https://go-review.googlesource.com/8625 Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-04-08 08:44:08 -07:00
if elf64 {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.ident[EI_CLASS] = ELFCLASS64
} else {
eh.ident[EI_CLASS] = ELFCLASS32
}
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
if ctxt.Arch.ByteOrder == binary.BigEndian {
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
eh.ident[EI_DATA] = ELFDATA2MSB
} else {
eh.ident[EI_DATA] = ELFDATA2LSB
}
eh.ident[EI_VERSION] = EV_CURRENT
if Linkmode == LinkExternal {
eh.type_ = ET_REL
cmd/link: mark PIE binaries as ET_DYN Part of adding PIE internal linking on linux/amd64. Change-Id: I586e7c2afba349281168df5e20d2fdcb697f6e37 Reviewed-on: https://go-review.googlesource.com/28542 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-06 08:05:19 -04:00
} else if Buildmode == BuildmodePIE {
eh.type_ = ET_DYN
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
} else {
eh.type_ = ET_EXEC
}
if Linkmode != LinkExternal {
cmd/link/internal: thread *ld.Link through calls Ctxt is a global defined in cmd/link/internal/ld of type *ld.Link. Start threading a *ld.Link through function calls instead of relying on the global variable. Ctxt is still used as a global by the architecture-specific packages, but I plan to fix that in a subsequent CL. Change-Id: I77a3a58bd396fafd959fa1d8b1c83008a9f5a7fb Reviewed-on: https://go-review.googlesource.com/27408 Run-TryBot: Michael Matloob <matloob@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-08-19 22:40:38 -04:00
eh.entry = uint64(Entryvalue(ctxt))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
eh.version = EV_CURRENT
if pph != nil {
pph.filesz = uint64(eh.phnum) * uint64(eh.phentsize)
pph.memsz = pph.filesz
}
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
ctxt.Out.SeekSet(0)
cmd/5g etc: mechanical cleanup Run rsc.io/grind rev a26569f on C->Go conversions. The new change in grind is the inlining of goto targets. If code says 'goto x' and the block starting at label x is unreachable except through that goto and the code can be moved to where the goto is without changing the meaning of its variable names, grind does that move. Simlarly, a goto to a plain return statement turns into that return statement (even if there are other paths to the return statement). Combined, these remove many long-distance gotos, which in turn makes it possible to reduce the scope of more variable declarations. (Because gotos can't jump across declarations, the gotos were keeping the declarations from moving.) Checked bit-for-bit compatibility with toolstash + buildall. Reduces compiler runtime in html/template by about 12%. Change-Id: Id727c0bd7763a61aa22f3daa00aeb8fccbc057a3 Reviewed-on: https://go-review.googlesource.com/6472 Reviewed-by: Aram Hăvărneanu <aram@mgk.ro> Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2015-03-02 12:35:15 -05:00
a := int64(0)
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
a += int64(elfwritehdr(ctxt.Out))
a += int64(elfwritephdrs(ctxt.Out))
a += int64(elfwriteshdrs(ctxt.Out))
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if !*FlagD {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
a += int64(elfwriteinterp(ctxt.Out))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
if Linkmode != LinkExternal {
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hnetbsd {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
a += int64(elfwritenetbsdsig(ctxt.Out))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/internal/objabi: extract shared functionality from obj Now only cmd/asm and cmd/compile depend on cmd/internal/obj. Changing the assembler backends no longer requires reinstalling cmd/link or cmd/addr2line. There's also now one canonical definition of the object file format in cmd/internal/objabi/doc.go, with a warning to update all three implementations. objabi is still something of a grab bag of unrelated code (e.g., flag and environment variable handling probably belong in a separate "tool" package), but this is still progress. Fixes #15165. Fixes #20026. Change-Id: Ic4b92fac7d0d35438e0d20c9579aad4085c5534c Reviewed-on: https://go-review.googlesource.com/40972 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2017-04-18 12:53:25 -07:00
if Headtype == objabi.Hopenbsd {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
a += int64(elfwriteopenbsdsig(ctxt.Out))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
if len(buildinfo) > 0 {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
a += int64(elfwritebuildinfo(ctxt.Out))
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/link: turn some globals into flag pointer variables This moves many of the flag globals into main and assigns them to their flag.String/Int64/... directly. Updates #16818 Change-Id: Ibbff44a273bbc5cb7228e43f147900ee8848517f Reviewed-on: https://go-review.googlesource.com/27473 Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-08-21 18:34:24 -04:00
if *flagBuildid != "" {
cmd/link: remove coutbuf global variable Begin passing coutbuf by as a parameter. To make the initial plumbing pass easier, it is also a field in the standard ctxt parameter. Consolidate the byte writing functions into the OutBuf object. The result is less architecture-dependent initialization. To avoid plumbing out everywhere we want to report an error, move handling of out file deletion to an AtExit function. For #22095 Change-Id: I0863695241562e0662ae3669666c7922b8c846f9 Reviewed-on: https://go-review.googlesource.com/67318 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-10-01 02:37:20 +00:00
a += int64(elfwritegobuildid(ctxt.Out))
cmd/link: add -buildid flag to write Go build ID to ELF output, same as cmd/compile Other binary formats to follow. Using our own note instead of the GNU build ID note because we are not the GNU project, and I can't guarantee that the semantics of our note and the semantics of the GNU note will match forever. (Also they don't match today.) For #11048. Change-Id: Iec7e5a2e49d52b6d3a51b0aface2de7c77a45491 Reviewed-on: https://go-review.googlesource.com/10706 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-06-04 14:31:05 -04:00
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
cmd/internal/ld: reserve space for package list note when -buildmode=shared This makes the intermediate object file a little bigger but it doesn't waste any space in the final shared library. Fixes #10691 Change-Id: Ic51a571d60291f1ac2dad1b50dba4679643168ae Reviewed-on: https://go-review.googlesource.com/9710 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2015-05-05 14:17:07 +12:00
if a > elfreserve {
cmd/link: split large elf text sections on ppc64x Some applications built with Go on ppc64x with external linking can fail to link with relocation truncation errors if the elf text section that is generated is larger than 2^26 bytes and that section contains a call instruction (bl) which calls a function beyond the limit addressable by the 24 bit field in the instruction. This solution consists of generating multiple text sections where each is small enough to allow the GNU linker to resolve the calls by generating long branch code where needed. Other changes were added to handle differences in processing when multiple text sections exist. Some adjustments were required to the computation of a method's address when using the method offset table when there are multiple text sections. The number of possible section headers was increased to allow for up to 128 text sections. A test case was also added. Fixes #15823. Change-Id: If8117b0e0afb058cbc072258425a35aef2363c92 Reviewed-on: https://go-review.googlesource.com/27790 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-08-25 11:07:33 -05:00
Errorf(nil, "ELFRESERVE too small: %d > %d with %d text sections", a, elfreserve, numtext)
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
}
}
cmd/link: unexport Elfadddynsym Change-Id: Ifc66bd8c32e788f35da3bd105bcdcfd04bd3dabc Reviewed-on: https://go-review.googlesource.com/59414 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2017-08-28 14:57:47 +09:00
func elfadddynsym(ctxt *Link, s *Symbol) {
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
if elf64 {
s.Dynid = int32(Nelfsym)
Nelfsym++
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
d := ctxt.Syms.Lookup(".dynsym", 0)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
name := s.Extname
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint32(ctxt.Arch, uint32(Addstring(ctxt.Syms.Lookup(".dynstr", 0), name)))
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
/* type */
t := STB_GLOBAL << 4
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
if s.Attr.CgoExport() && s.Type&SMASK == STEXT {
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
t |= STT_FUNC
} else {
t |= STT_OBJECT
}
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint8(uint8(t))
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
/* reserved */
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint8(0)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
/* section where symbol is defined */
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
if s.Type == SDYNIMPORT {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint16(ctxt.Arch, SHN_UNDEF)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint16(ctxt.Arch, 1)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
}
/* value */
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
if s.Type == SDYNIMPORT {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint64(ctxt.Arch, 0)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddAddr(ctxt.Arch, s)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
}
/* size of object */
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint64(ctxt.Arch, uint64(s.Size))
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.AMD64 && !s.Attr.CgoExportDynamic() && s.Dynimplib != "" && !seenlib[s.Dynimplib] {
cmd/link: remove now-unused ctxt arguments from a few functions Specifically Addstring, Addbytes and Symgrow. Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9 Reviewed-on: https://go-review.googlesource.com/29348 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:31:26 +12:00
Elfwritedynent(ctxt, ctxt.Syms.Lookup(".dynamic", 0), DT_NEEDED, uint64(Addstring(ctxt.Syms.Lookup(".dynstr", 0), s.Dynimplib)))
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
}
} else {
s.Dynid = int32(Nelfsym)
Nelfsym++
cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same Done with two eg templates: package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linklookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.Lookup(name, v) } package p import ( "cmd/link/internal/ld" ) func before(ctxt *ld.Link, name string, v int) *ld.Symbol { return ld.Linkrlookup(ctxt, name, v) } func after(ctxt *ld.Link, name string, v int) *ld.Symbol { return ctxt.Syms.ROLookup(name, v) } Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1 Reviewed-on: https://go-review.googlesource.com/29343 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 15:06:08 +12:00
d := ctxt.Syms.Lookup(".dynsym", 0)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
/* name */
name := s.Extname
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint32(ctxt.Arch, uint32(Addstring(ctxt.Syms.Lookup(".dynstr", 0), name)))
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
/* value */
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
if s.Type == SDYNIMPORT {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint32(ctxt.Arch, 0)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddAddr(ctxt.Arch, s)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
}
cmd/link: specify correct size for dynamic symbols in 386 elf output Currently 386 ELF binaries are generated with dynamic symbols that have a size of zero bytes, even though the symbol in the symbol table has the correct size. Fix this by specifying the correct size when creating dynamic symbols. Issue found on OpenBSD -current, where ld.so is now producing link warnings due to mismatched symbol sizes. Fixes #15593. Change-Id: Ib1a12b23ff9159c61ac980bf48a983b86f3df256 Reviewed-on: https://go-review.googlesource.com/22912 Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: Minux Ma <minux@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-05-08 01:27:45 +10:00
/* size of object */
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint32(ctxt.Arch, uint32(s.Size))
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
/* type */
t := STB_GLOBAL << 4
all: make spelling consistent Fixes #17938 Change-Id: Iad12155f4976846bd4a9a53869f89e40e5b3deb3 Reviewed-on: https://go-review.googlesource.com/34147 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2016-12-08 22:15:40 +00:00
// TODO(mwhudson): presumably the behavior should actually be the same on both arm and 386.
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
if ctxt.Arch.Family == sys.I386 && s.Attr.CgoExport() && s.Type&SMASK == STEXT {
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
t |= STT_FUNC
cmd/link: remove SysArch global variable For #22095 Change-Id: I9d1f0d93f8fd701a24af826dc903eea2bc235de2 Reviewed-on: https://go-review.googlesource.com/67317 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 21:10:49 +00:00
} else if ctxt.Arch.Family == sys.ARM && s.Attr.CgoExportDynamic() && s.Type&SMASK == STEXT {
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
t |= STT_FUNC
} else {
t |= STT_OBJECT
}
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint8(uint8(t))
d.AddUint8(0)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
/* shndx */
cmd/internal/objabi, cmd/link: move linker-only symkind values into linker Many (most!) of the values of objapi.SymKind are used only in the linker, so this creates a separate cmd/link/internal/ld.SymKind type, removes most values from SymKind and maps one to the other when reading object files in the linker. Two of the remaining objapi.SymKind values are only checked for, never set and so will never be actually found but I wanted to keep this to the most mechanical change possible. Change-Id: I4bbc5aed6713cab3e8de732e6e288eb77be0474c Reviewed-on: https://go-review.googlesource.com/40985 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2017-04-19 15:15:35 +12:00
if s.Type == SDYNIMPORT {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint16(ctxt.Arch, SHN_UNDEF)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
} else {
cmd/link: convert symbol Add* functions to methods Also reduce the passed context from *Link to *sys.Arch, so fewer data dependencies need to be wired through all the code dealing with symbols. For #22095 Change-Id: I50969405d6562c5152bd1a3c443b72413e9b70bc Reviewed-on: https://go-review.googlesource.com/67313 Run-TryBot: David Crawshaw <crawshaw@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2017-09-30 15:06:44 +00:00
d.AddUint16(ctxt.Arch, 1)
cmd/5l, etc, cmd/internal/ld: consolidate implementations of adddynsym The only essential difference is elf32 vs elf64, I assume the other differences are bugs in one version or another... Change-Id: Ie6ff33d5574a6592b543df9983eff8fdf88c97a1 Reviewed-on: https://go-review.googlesource.com/10001 Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Russ Cox <rsc@golang.org>
2015-05-12 15:59:15 +12:00
}
}
}
cmd/new5l etc: convert from C to Go Using rsc.io/c2go rev fc8cbfa's run.ld script. Change-Id: I4d4d14fce96f8ce7a934bf8b9701b84fa9cf772d Reviewed-on: https://go-review.googlesource.com/6335 Reviewed-by: Rob Pike <r@golang.org>
2015-02-27 22:57:28 -05:00
func ELF32_R_SYM(info uint32) uint32 {
return info >> 8
}
func ELF32_R_TYPE(info uint32) uint32 {
return uint32(uint8(info))
}
func ELF32_R_INFO(sym uint32, type_ uint32) uint32 {
return sym<<8 | type_
}
func ELF32_ST_BIND(info uint8) uint8 {
return info >> 4
}
func ELF32_ST_TYPE(info uint8) uint8 {
return info & 0xf
}
func ELF32_ST_INFO(bind uint8, type_ uint8) uint8 {
return bind<<4 | type_&0xf
}
func ELF32_ST_VISIBILITY(oth uint8) uint8 {
return oth & 3
}
func ELF64_R_SYM(info uint64) uint32 {
return uint32(info >> 32)
}
func ELF64_R_TYPE(info uint64) uint32 {
return uint32(info)
}
func ELF64_R_INFO(sym uint32, type_ uint32) uint64 {
return uint64(sym)<<32 | uint64(type_)
}
func ELF64_ST_BIND(info uint8) uint8 {
return info >> 4
}
func ELF64_ST_TYPE(info uint8) uint8 {
return info & 0xf
}
func ELF64_ST_INFO(bind uint8, type_ uint8) uint8 {
return bind<<4 | type_&0xf
}
func ELF64_ST_VISIBILITY(oth uint8) uint8 {
return oth & 3
}
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