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[dev.cc] cmd/internal/obj: convert liblink C to Go
This CL adds the real cmd/internal/obj packages. Collectively they correspond to the liblink library. The conversion was done using rsc.io/c2go's run script at rsc.io/c2go repo version 706fac7. This is not the final conversion, just the first working draft. There will be more updates, but this works well enough to use with go tool objwriter and pass all.bash. Change-Id: I9359e835425f995a392bb2fcdbebf29511477bed Reviewed-on: https://go-review.googlesource.com/3046 Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Russ Cox
parent
db52315c88
commit
d6f6e420fc
40 changed files with 27998 additions and 7 deletions
463
src/cmd/internal/obj/link.go
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463
src/cmd/internal/obj/link.go
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// Derived from Inferno utils/6l/l.h and related files.
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// http://code.google.com/p/inferno-os/source/browse/utils/6l/l.h
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//
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// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
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// Portions Copyright © 1997-1999 Vita Nuova Limited
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// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
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// Portions Copyright © 2004,2006 Bruce Ellis
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// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
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// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
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// Portions Copyright © 2009 The Go Authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package obj
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import "encoding/binary"
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type Addr struct {
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Offset int64
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U struct {
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Sval string
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Dval float64
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Branch *Prog
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}
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Sym *LSym
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Gotype *LSym
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Type_ int16
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Index uint8
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Scale int8
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Reg int8
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Name int8
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Class int8
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Etype uint8
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Offset2 int32
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Node *struct{}
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Width int64
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}
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type Prog struct {
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Ctxt *Link
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Pc int64
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Lineno int32
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Link *Prog
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As int16
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Scond uint8
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From Addr
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Reg uint8
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From3 Addr
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To Addr
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Opt interface{}
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Forwd *Prog
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Pcond *Prog
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Comefrom *Prog
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Pcrel *Prog
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Spadj int32
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Mark uint16
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Optab uint16
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Back uint8
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Ft uint8
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Tt uint8
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Isize uint8
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Printed uint8
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Width int8
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Mode int8
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TEXTFLAG uint8
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}
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type LSym struct {
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Name string
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Extname string
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Type_ int16
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Version int16
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Dupok uint8
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Cfunc uint8
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External uint8
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Nosplit uint8
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Reachable uint8
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Cgoexport uint8
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Special uint8
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Stkcheck uint8
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Hide uint8
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Leaf uint8
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Fnptr uint8
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Localentry uint8
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Seenglobl uint8
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Onlist uint8
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Printed uint8
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Symid int16
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Dynid int32
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Sig int32
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Plt int32
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Got int32
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Align int32
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Elfsym int32
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Args int32
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Locals int32
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Value int64
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Size int64
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Hash *LSym
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Allsym *LSym
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Next *LSym
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Sub *LSym
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Outer *LSym
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Gotype *LSym
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Reachparent *LSym
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Queue *LSym
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File string
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Dynimplib string
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Dynimpvers string
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Sect *struct{}
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Autom *Auto
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Text *Prog
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Etext *Prog
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Pcln *Pcln
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P []byte
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R []Reloc
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}
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type Reloc struct {
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Off int32
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Siz uint8
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Done uint8
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Type_ int32
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Variant int32
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Add int64
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Xadd int64
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Sym *LSym
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Xsym *LSym
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}
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type Auto struct {
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Asym *LSym
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Link *Auto
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Aoffset int32
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Type_ int16
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Gotype *LSym
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}
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type Hist struct {
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Link *Hist
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Name string
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Line int32
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Offset int32
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Printed uint8
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}
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type Link struct {
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Thechar int32
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Thestring string
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Goarm int32
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Headtype int
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Arch *LinkArch
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Ignore func(string) int32
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Debugasm int32
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Debugline int32
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Debughist int32
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Debugread int32
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Debugvlog int32
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Debugstack int32
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Debugzerostack int32
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Debugdivmod int32
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Debugfloat int32
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Debugpcln int32
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Flag_shared int32
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Iself int32
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Bso *Biobuf
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Pathname string
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Windows int32
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Trimpath string
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Goroot string
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Goroot_final string
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Enforce_data_order int32
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Hash [LINKHASH]*LSym
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Allsym *LSym
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Nsymbol int32
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Hist *Hist
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Ehist *Hist
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Plist *Plist
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Plast *Plist
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Sym_div *LSym
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Sym_divu *LSym
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Sym_mod *LSym
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Sym_modu *LSym
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Symmorestack [2]*LSym
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Tlsg *LSym
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Plan9privates *LSym
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Curp *Prog
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Printp *Prog
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Blitrl *Prog
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Elitrl *Prog
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Rexflag int
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Rep int
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Repn int
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Lock int
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Asmode int
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Andptr []byte
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And [100]uint8
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Instoffset int64
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Autosize int32
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Armsize int32
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Pc int64
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Libdir []string
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Library []Library
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Tlsoffset int
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Diag func(string, ...interface{})
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Mode int
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Curauto *Auto
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Curhist *Auto
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Cursym *LSym
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Version int
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Textp *LSym
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Etextp *LSym
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Histdepth int32
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Nhistfile int32
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Filesyms *LSym
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}
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type Plist struct {
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Name *LSym
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Firstpc *Prog
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Recur int
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Link *Plist
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}
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type LinkArch struct {
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Pconv func(*Prog) string
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Name string
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Thechar int
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Endian int32
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ByteOrder binary.ByteOrder
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Addstacksplit func(*Link, *LSym)
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Assemble func(*Link, *LSym)
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Datasize func(*Prog) int
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Follow func(*Link, *LSym)
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Iscall func(*Prog) bool
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Isdata func(*Prog) bool
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Prg func() *Prog
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Progedit func(*Link, *Prog)
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Settextflag func(*Prog, int)
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Symtype func(*Addr) int
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Textflag func(*Prog) int
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Minlc int
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Ptrsize int
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Regsize int
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D_ADDR int
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D_AUTO int
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D_BRANCH int
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D_CONST int
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D_EXTERN int
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D_FCONST int
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D_NONE int
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D_PARAM int
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D_SCONST int
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D_STATIC int
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D_OREG int
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ACALL int
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ADATA int
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AEND int
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AFUNCDATA int
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AGLOBL int
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AJMP int
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ANOP int
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APCDATA int
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ARET int
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ATEXT int
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ATYPE int
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AUSEFIELD int
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}
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type Library struct {
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Objref string
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Srcref string
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File string
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Pkg string
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}
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type Pcln struct {
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Pcsp Pcdata
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Pcfile Pcdata
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Pcline Pcdata
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Pcdata []Pcdata
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Funcdata []*LSym
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Funcdataoff []int64
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File []*LSym
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Lastfile *LSym
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Lastindex int
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}
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type Pcdata struct {
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P []byte
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}
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type Pciter struct {
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d Pcdata
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p []byte
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pc uint32
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nextpc uint32
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pcscale uint32
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value int32
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start int
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done int
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}
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// prevent incompatible type signatures between liblink and 8l on Plan 9
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// prevent incompatible type signatures between liblink and 8l on Plan 9
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// LSym.type
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const (
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Sxxx = iota
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STEXT
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SELFRXSECT
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STYPE
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SSTRING
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SGOSTRING
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SGOFUNC
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SRODATA
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SFUNCTAB
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STYPELINK
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SSYMTAB
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SPCLNTAB
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SELFROSECT
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SMACHOPLT
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SELFSECT
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SMACHO
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SMACHOGOT
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SWINDOWS
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SELFGOT
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SNOPTRDATA
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SINITARR
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SDATA
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SBSS
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SNOPTRBSS
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STLSBSS
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SXREF
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SMACHOSYMSTR
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SMACHOSYMTAB
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SMACHOINDIRECTPLT
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SMACHOINDIRECTGOT
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SFILE
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SFILEPATH
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SCONST
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SDYNIMPORT
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SHOSTOBJ
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SSUB = 1 << 8
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SMASK = SSUB - 1
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SHIDDEN = 1 << 9
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)
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// Reloc.type
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const (
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R_ADDR = 1 + iota
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R_ADDRPOWER
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R_SIZE
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R_CALL
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R_CALLARM
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R_CALLIND
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R_CALLPOWER
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R_CONST
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R_PCREL
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R_TLS
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R_TLS_LE
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R_TLS_IE
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R_GOTOFF
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R_PLT0
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R_PLT1
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R_PLT2
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R_USEFIELD
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R_POWER_TOC
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)
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// Reloc.variant
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const (
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RV_NONE = iota
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RV_POWER_LO
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RV_POWER_HI
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RV_POWER_HA
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RV_POWER_DS
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RV_CHECK_OVERFLOW = 1 << 8
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RV_TYPE_MASK = RV_CHECK_OVERFLOW - 1
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)
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// Auto.type
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const (
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A_AUTO = 1 + iota
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A_PARAM
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)
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const (
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LINKHASH = 100003
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)
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// Pcdata iterator.
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// for(pciterinit(ctxt, &it, &pcd); !it.done; pciternext(&it)) { it.value holds in [it.pc, it.nextpc) }
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// symbol version, incremented each time a file is loaded.
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// version==1 is reserved for savehist.
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const (
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HistVersion = 1
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)
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// Link holds the context for writing object code from a compiler
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// to be linker input or for reading that input into the linker.
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const (
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LittleEndian = 0x04030201
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BigEndian = 0x01020304
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)
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// LinkArch is the definition of a single architecture.
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/* executable header types */
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const (
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Hunknown = 0 + iota
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Hdarwin
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Hdragonfly
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Helf
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Hfreebsd
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Hlinux
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Hnacl
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Hnetbsd
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Hopenbsd
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Hplan9
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Hsolaris
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Hwindows
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)
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const (
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LinkAuto = 0 + iota
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LinkInternal
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LinkExternal
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)
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// asm5.c
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// asm6.c
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// asm8.c
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// asm9.c
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// data.c
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// go.c
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// ld.c
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