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go/src/cmd/internal/ld/pe.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 (
"encoding/binary"
"fmt"
"sort"
)
type IMAGE_FILE_HEADER struct {
Machine uint16
NumberOfSections uint16
TimeDateStamp uint32
PointerToSymbolTable uint32
NumberOfSymbols uint32
SizeOfOptionalHeader uint16
Characteristics uint16
}
type IMAGE_DATA_DIRECTORY struct {
VirtualAddress uint32
Size uint32
}
type IMAGE_OPTIONAL_HEADER struct {
Magic uint16
MajorLinkerVersion uint8
MinorLinkerVersion uint8
SizeOfCode uint32
SizeOfInitializedData uint32
SizeOfUninitializedData uint32
AddressOfEntryPoint uint32
BaseOfCode uint32
BaseOfData uint32
ImageBase uint32
SectionAlignment uint32
FileAlignment uint32
MajorOperatingSystemVersion uint16
MinorOperatingSystemVersion uint16
MajorImageVersion uint16
MinorImageVersion uint16
MajorSubsystemVersion uint16
MinorSubsystemVersion uint16
Win32VersionValue uint32
SizeOfImage uint32
SizeOfHeaders uint32
CheckSum uint32
Subsystem uint16
DllCharacteristics uint16
SizeOfStackReserve uint32
SizeOfStackCommit uint32
SizeOfHeapReserve uint32
SizeOfHeapCommit uint32
LoaderFlags uint32
NumberOfRvaAndSizes uint32
DataDirectory [16]IMAGE_DATA_DIRECTORY
}
type IMAGE_SECTION_HEADER struct {
Name [8]uint8
VirtualSize uint32
VirtualAddress uint32
SizeOfRawData uint32
PointerToRawData uint32
PointerToRelocations uint32
PointerToLineNumbers uint32
NumberOfRelocations uint16
NumberOfLineNumbers uint16
Characteristics uint32
}
type IMAGE_IMPORT_DESCRIPTOR struct {
OriginalFirstThunk uint32
TimeDateStamp uint32
ForwarderChain uint32
Name uint32
FirstThunk uint32
}
type IMAGE_EXPORT_DIRECTORY struct {
Characteristics uint32
TimeDateStamp uint32
MajorVersion uint16
MinorVersion uint16
Name uint32
Base uint32
NumberOfFunctions uint32
NumberOfNames uint32
AddressOfFunctions uint32
AddressOfNames uint32
AddressOfNameOrdinals uint32
}
const (
PEBASE = 0x00400000
PESECTALIGN = 0x1000
PEFILEALIGN = 2 << 8
)
const (
IMAGE_FILE_MACHINE_I386 = 0x14c
IMAGE_FILE_MACHINE_AMD64 = 0x8664
IMAGE_FILE_RELOCS_STRIPPED = 0x0001
IMAGE_FILE_EXECUTABLE_IMAGE = 0x0002
IMAGE_FILE_LARGE_ADDRESS_AWARE = 0x0020
IMAGE_FILE_32BIT_MACHINE = 0x0100
IMAGE_FILE_DEBUG_STRIPPED = 0x0200
IMAGE_SCN_CNT_CODE = 0x00000020
IMAGE_SCN_CNT_INITIALIZED_DATA = 0x00000040
IMAGE_SCN_CNT_UNINITIALIZED_DATA = 0x00000080
IMAGE_SCN_MEM_EXECUTE = 0x20000000
IMAGE_SCN_MEM_READ = 0x40000000
IMAGE_SCN_MEM_WRITE = 0x80000000
IMAGE_SCN_MEM_DISCARDABLE = 0x2000000
IMAGE_DIRECTORY_ENTRY_EXPORT = 0
IMAGE_DIRECTORY_ENTRY_IMPORT = 1
IMAGE_DIRECTORY_ENTRY_RESOURCE = 2
IMAGE_DIRECTORY_ENTRY_EXCEPTION = 3
IMAGE_DIRECTORY_ENTRY_SECURITY = 4
IMAGE_DIRECTORY_ENTRY_BASERELOC = 5
IMAGE_DIRECTORY_ENTRY_DEBUG = 6
IMAGE_DIRECTORY_ENTRY_COPYRIGHT = 7
IMAGE_DIRECTORY_ENTRY_ARCHITECTURE = 7
IMAGE_DIRECTORY_ENTRY_GLOBALPTR = 8
IMAGE_DIRECTORY_ENTRY_TLS = 9
IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG = 10
IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT = 11
IMAGE_DIRECTORY_ENTRY_IAT = 12
IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT = 13
IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR = 14
IMAGE_SUBSYSTEM_WINDOWS_GUI = 2
IMAGE_SUBSYSTEM_WINDOWS_CUI = 3
)
// X64
type PE64_IMAGE_OPTIONAL_HEADER struct {
Magic uint16
MajorLinkerVersion uint8
MinorLinkerVersion uint8
SizeOfCode uint32
SizeOfInitializedData uint32
SizeOfUninitializedData uint32
AddressOfEntryPoint uint32
BaseOfCode uint32
ImageBase uint64
SectionAlignment uint32
FileAlignment uint32
MajorOperatingSystemVersion uint16
MinorOperatingSystemVersion uint16
MajorImageVersion uint16
MinorImageVersion uint16
MajorSubsystemVersion uint16
MinorSubsystemVersion uint16
Win32VersionValue uint32
SizeOfImage uint32
SizeOfHeaders uint32
CheckSum uint32
Subsystem uint16
DllCharacteristics uint16
SizeOfStackReserve uint64
SizeOfStackCommit uint64
SizeOfHeapReserve uint64
SizeOfHeapCommit uint64
LoaderFlags uint32
NumberOfRvaAndSizes uint32
DataDirectory [16]IMAGE_DATA_DIRECTORY
}
// 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.
// PE (Portable Executable) file writing
// http://www.microsoft.com/whdc/system/platform/firmware/PECOFF.mspx
// DOS stub that prints out
// "This program cannot be run in DOS mode."
var dosstub = []uint8{
0x4d,
0x5a,
0x90,
0x00,
0x03,
0x00,
0x04,
0x00,
0x00,
0x00,
0x00,
0x00,
0xff,
0xff,
0x00,
0x00,
0x8b,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x40,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x80,
0x00,
0x00,
0x00,
0x0e,
0x1f,
0xba,
0x0e,
0x00,
0xb4,
0x09,
0xcd,
0x21,
0xb8,
0x01,
0x4c,
0xcd,
0x21,
0x54,
0x68,
0x69,
0x73,
0x20,
0x70,
0x72,
0x6f,
0x67,
0x72,
0x61,
0x6d,
0x20,
0x63,
0x61,
0x6e,
0x6e,
0x6f,
0x74,
0x20,
0x62,
0x65,
0x20,
0x72,
0x75,
0x6e,
0x20,
0x69,
0x6e,
0x20,
0x44,
0x4f,
0x53,
0x20,
0x6d,
0x6f,
0x64,
0x65,
0x2e,
0x0d,
0x0d,
0x0a,
0x24,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
}
var rsrcsym *LSym
var strtbl []byte
var PESECTHEADR int32
var PEFILEHEADR int32
var pe64 int
var pensect int
var nextsectoff int
var nextfileoff int
var textsect int
var datasect int
var fh IMAGE_FILE_HEADER
var oh IMAGE_OPTIONAL_HEADER
var oh64 PE64_IMAGE_OPTIONAL_HEADER
var sh [16]IMAGE_SECTION_HEADER
var dd []IMAGE_DATA_DIRECTORY
type Imp struct {
s *LSym
off uint64
next *Imp
}
type Dll struct {
name string
nameoff uint64
thunkoff uint64
ms *Imp
next *Dll
}
var dr *Dll
var dexport [1024]*LSym
var nexport int
type COFFSym struct {
sym *LSym
strtbloff int
sect int
value int64
}
var coffsym []COFFSym
var ncoffsym int
func addpesection(name string, sectsize int, filesize int) *IMAGE_SECTION_HEADER {
var h *IMAGE_SECTION_HEADER
if pensect == 16 {
Diag("too many sections")
Errorexit()
}
h = &sh[pensect]
pensect++
copy(h.Name[:], name)
h.VirtualSize = uint32(sectsize)
h.VirtualAddress = uint32(nextsectoff)
nextsectoff = int(Rnd(int64(nextsectoff)+int64(sectsize), PESECTALIGN))
h.PointerToRawData = uint32(nextfileoff)
if filesize > 0 {
h.SizeOfRawData = uint32(Rnd(int64(filesize), PEFILEALIGN))
nextfileoff += int(h.SizeOfRawData)
}
return h
}
func chksectoff(h *IMAGE_SECTION_HEADER, off int64) {
if off != int64(h.PointerToRawData) {
Diag("%s.PointerToRawData = %#x, want %#x", cstring(h.Name[:]), uint64(int64(h.PointerToRawData)), uint64(off))
Errorexit()
}
}
func chksectseg(h *IMAGE_SECTION_HEADER, s *Segment) {
if s.Vaddr-PEBASE != uint64(h.VirtualAddress) {
Diag("%s.VirtualAddress = %#x, want %#x", cstring(h.Name[:]), uint64(int64(h.VirtualAddress)), uint64(int64(s.Vaddr-PEBASE)))
Errorexit()
}
if s.Fileoff != uint64(h.PointerToRawData) {
Diag("%s.PointerToRawData = %#x, want %#x", cstring(h.Name[:]), uint64(int64(h.PointerToRawData)), uint64(int64(s.Fileoff)))
Errorexit()
}
}
func Peinit() {
var l int
switch Thearch.Thechar {
// 64-bit architectures
case '6':
pe64 = 1
l = binary.Size(&oh64)
dd = oh64.DataDirectory[:]
// 32-bit architectures
default:
l = binary.Size(&oh)
dd = oh.DataDirectory[:]
}
PEFILEHEADR = int32(Rnd(int64(len(dosstub)+binary.Size(&fh)+l+binary.Size(&sh)), PEFILEALIGN))
PESECTHEADR = int32(Rnd(int64(PEFILEHEADR), PESECTALIGN))
nextsectoff = int(PESECTHEADR)
nextfileoff = int(PEFILEHEADR)
// some mingw libs depend on this symbol, for example, FindPESectionByName
xdefine("__image_base__", SDATA, PEBASE)
xdefine("_image_base__", SDATA, PEBASE)
}
func pewrite() {
Cseek(0)
Cwrite(dosstub)
strnput("PE", 4)
binary.Write(&coutbuf, binary.LittleEndian, &fh)
if pe64 != 0 {
binary.Write(&coutbuf, binary.LittleEndian, &oh64)
} else {
binary.Write(&coutbuf, binary.LittleEndian, &oh)
}
binary.Write(&coutbuf, binary.LittleEndian, sh[:pensect])
}
func strput(s string) {
coutbuf.w.WriteString(s)
Cput(0)
// string must be padded to even size
if (len(s)+1)%2 != 0 {
Cput(0)
}
}
func initdynimport() *Dll {
var m *Imp
var d *Dll
var s *LSym
var dynamic *LSym
dr = nil
m = nil
for s = Ctxt.Allsym; s != nil; s = s.Allsym {
if !s.Reachable || s.Type != SDYNIMPORT {
continue
}
for d = dr; d != nil; d = d.next {
if d.name == s.Dynimplib {
m = new(Imp)
break
}
}
if d == nil {
d = new(Dll)
d.name = s.Dynimplib
d.next = dr
dr = d
m = new(Imp)
}
m.s = s
m.next = d.ms
d.ms = m
}
dynamic = Linklookup(Ctxt, ".windynamic", 0)
dynamic.Reachable = true
dynamic.Type = SWINDOWS
for d = dr; d != nil; d = d.next {
for m = d.ms; m != nil; m = m.next {
m.s.Type = SWINDOWS | SSUB
m.s.Sub = dynamic.Sub
dynamic.Sub = m.s
m.s.Value = dynamic.Size
dynamic.Size += int64(Thearch.Ptrsize)
}
dynamic.Size += int64(Thearch.Ptrsize)
}
return dr
}
func addimports(datsect *IMAGE_SECTION_HEADER) {
var isect *IMAGE_SECTION_HEADER
var n uint64
var oftbase uint64
var ftbase uint64
var startoff int64
var endoff int64
var m *Imp
var d *Dll
var dynamic *LSym
startoff = Cpos()
dynamic = Linklookup(Ctxt, ".windynamic", 0)
// skip import descriptor table (will write it later)
n = 0
for d = dr; d != nil; d = d.next {
n++
}
Cseek(startoff + int64(binary.Size(&IMAGE_IMPORT_DESCRIPTOR{}))*int64(n+1))
// write dll names
for d = dr; d != nil; d = d.next {
d.nameoff = uint64(Cpos()) - uint64(startoff)
strput(d.name)
}
// write function names
for d = dr; d != nil; d = d.next {
for m = d.ms; m != nil; m = m.next {
m.off = uint64(nextsectoff) + uint64(Cpos()) - uint64(startoff)
Wputl(0) // hint
strput(m.s.Extname)
}
}
// write OriginalFirstThunks
oftbase = uint64(Cpos()) - uint64(startoff)
n = uint64(Cpos())
for d = dr; d != nil; d = d.next {
d.thunkoff = uint64(Cpos()) - n
for m = d.ms; m != nil; m = m.next {
if pe64 != 0 {
Vputl(m.off)
} else {
Lputl(uint32(m.off))
}
}
if pe64 != 0 {
Vputl(0)
} else {
Lputl(0)
}
}
// add pe section and pad it at the end
n = uint64(Cpos()) - uint64(startoff)
isect = addpesection(".idata", int(n), int(n))
isect.Characteristics = IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE
chksectoff(isect, startoff)
strnput("", int(uint64(isect.SizeOfRawData)-n))
endoff = Cpos()
// write FirstThunks (allocated in .data section)
ftbase = uint64(dynamic.Value) - uint64(datsect.VirtualAddress) - PEBASE
Cseek(int64(uint64(datsect.PointerToRawData) + ftbase))
for d = dr; d != nil; d = d.next {
for m = d.ms; m != nil; m = m.next {
if pe64 != 0 {
Vputl(m.off)
} else {
Lputl(uint32(m.off))
}
}
if pe64 != 0 {
Vputl(0)
} else {
Lputl(0)
}
}
// finally write import descriptor table
Cseek(startoff)
for d = dr; d != nil; d = d.next {
Lputl(uint32(uint64(isect.VirtualAddress) + oftbase + d.thunkoff))
Lputl(0)
Lputl(0)
Lputl(uint32(uint64(isect.VirtualAddress) + d.nameoff))
Lputl(uint32(uint64(datsect.VirtualAddress) + ftbase + d.thunkoff))
}
Lputl(0) //end
Lputl(0)
Lputl(0)
Lputl(0)
Lputl(0)
// update data directory
dd[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress = isect.VirtualAddress
dd[IMAGE_DIRECTORY_ENTRY_IMPORT].Size = isect.VirtualSize
dd[IMAGE_DIRECTORY_ENTRY_IAT].VirtualAddress = uint32(dynamic.Value - PEBASE)
dd[IMAGE_DIRECTORY_ENTRY_IAT].Size = uint32(dynamic.Size)
Cseek(endoff)
}
type pescmp []*LSym
func (x pescmp) Len() int {
return len(x)
}
func (x pescmp) Swap(i, j int) {
x[i], x[j] = x[j], x[i]
}
func (x pescmp) Less(i, j int) bool {
var s1 *LSym
var s2 *LSym
s1 = x[i]
s2 = x[j]
return stringsCompare(s1.Extname, s2.Extname) < 0
}
func initdynexport() {
var s *LSym
nexport = 0
for s = Ctxt.Allsym; s != nil; s = s.Allsym {
if !s.Reachable || s.Cgoexport&CgoExportDynamic == 0 {
continue
}
if nexport+1 > len(dexport) {
Diag("pe dynexport table is full")
Errorexit()
}
dexport[nexport] = s
nexport++
}
sort.Sort(pescmp(dexport[:nexport]))
}
func addexports() {
var sect *IMAGE_SECTION_HEADER
var e IMAGE_EXPORT_DIRECTORY
var size int
var i int
var va int
var va_name int
var va_addr int
var va_na int
var v int
size = binary.Size(&e) + 10*nexport + len(outfile) + 1
for i = 0; i < nexport; i++ {
size += len(dexport[i].Extname) + 1
}
if nexport == 0 {
return
}
sect = addpesection(".edata", size, size)
sect.Characteristics = IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ
chksectoff(sect, Cpos())
va = int(sect.VirtualAddress)
dd[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress = uint32(va)
dd[IMAGE_DIRECTORY_ENTRY_EXPORT].Size = sect.VirtualSize
va_name = va + binary.Size(&e) + nexport*4
va_addr = va + binary.Size(&e)
va_na = va + binary.Size(&e) + nexport*8
e.Characteristics = 0
e.MajorVersion = 0
e.MinorVersion = 0
e.NumberOfFunctions = uint32(nexport)
e.NumberOfNames = uint32(nexport)
e.Name = uint32(va+binary.Size(&e)) + uint32(nexport)*10 // Program names.
e.Base = 1
e.AddressOfFunctions = uint32(va_addr)
e.AddressOfNames = uint32(va_name)
e.AddressOfNameOrdinals = uint32(va_na)
// put IMAGE_EXPORT_DIRECTORY
binary.Write(&coutbuf, binary.LittleEndian, &e)
// put EXPORT Address Table
for i = 0; i < nexport; i++ {
Lputl(uint32(dexport[i].Value - PEBASE))
}
// put EXPORT Name Pointer Table
v = int(e.Name + uint32(len(outfile)) + 1)
for i = 0; i < nexport; i++ {
Lputl(uint32(v))
v += len(dexport[i].Extname) + 1
}
// put EXPORT Ordinal Table
for i = 0; i < nexport; i++ {
Wputl(uint16(i))
}
// put Names
strnput(outfile, len(outfile)+1)
for i = 0; i < nexport; i++ {
strnput(dexport[i].Extname, len(dexport[i].Extname)+1)
}
strnput("", int(sect.SizeOfRawData-uint32(size)))
}
func dope() {
var rel *LSym
/* relocation table */
rel = Linklookup(Ctxt, ".rel", 0)
rel.Reachable = true
rel.Type = SELFROSECT
initdynimport()
initdynexport()
}
func strtbladd(name string) int {
off := len(strtbl) + 4 // offset includes 4-byte length at beginning of table
strtbl = append(strtbl, name...)
strtbl = append(strtbl, 0)
return off
}
/*
* For more than 8 characters section names, name contains a slash (/) that is
* followed by an ASCII representation of a decimal number that is an offset into
* the string table.
* reference: pecoff_v8.docx Page 24.
* <http://www.microsoft.com/whdc/system/platform/firmware/PECOFFdwn.mspx>
*/
func newPEDWARFSection(name string, size int64) *IMAGE_SECTION_HEADER {
var h *IMAGE_SECTION_HEADER
var s string
var off int
if size == 0 {
return nil
}
off = strtbladd(name)
s = fmt.Sprintf("/%d", off)
h = addpesection(s, int(size), int(size))
h.Characteristics = IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_DISCARDABLE
return h
}
func addpesym(s *LSym, name string, type_ int, addr int64, size int64, ver int, gotype *LSym) {
var cs *COFFSym
if s == nil {
return
}
if s.Sect == nil {
return
}
switch type_ {
default:
return
case 'D',
'B',
'T':
break
}
if coffsym != nil {
cs = &coffsym[ncoffsym]
cs.sym = s
if len(s.Name) > 8 {
cs.strtbloff = strtbladd(s.Name)
}
if uint64(s.Value) >= Segdata.Vaddr {
cs.value = int64(uint64(s.Value) - Segdata.Vaddr)
cs.sect = datasect
} else if uint64(s.Value) >= Segtext.Vaddr {
cs.value = int64(uint64(s.Value) - Segtext.Vaddr)
cs.sect = textsect
} else {
cs.value = 0
cs.sect = 0
Diag("addpesym %#x", addr)
}
}
ncoffsym++
}
func addpesymtable() {
var h *IMAGE_SECTION_HEADER
var i int
var size int
var s *COFFSym
if Debug['s'] == 0 {
genasmsym(addpesym)
coffsym = make([]COFFSym, ncoffsym)
ncoffsym = 0
genasmsym(addpesym)
}
size = len(strtbl) + 4 + 18*ncoffsym
h = addpesection(".symtab", size, size)
h.Characteristics = IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_DISCARDABLE
chksectoff(h, Cpos())
fh.PointerToSymbolTable = uint32(Cpos())
fh.NumberOfSymbols = uint32(ncoffsym)
// put COFF symbol table
for i = 0; i < ncoffsym; i++ {
s = &coffsym[i]
if s.strtbloff == 0 {
strnput(s.sym.Name, 8)
} else {
Lputl(0)
Lputl(uint32(s.strtbloff))
}
Lputl(uint32(s.value))
Wputl(uint16(s.sect))
Wputl(0x0308) // "array of structs"
Cput(2) // storage class: external
Cput(0) // no aux entries
}
// put COFF string table
Lputl(uint32(len(strtbl)) + 4)
for i = 0; i < len(strtbl); i++ {
Cput(uint8(strtbl[i]))
}
strnput("", int(h.SizeOfRawData-uint32(size)))
}
func setpersrc(sym *LSym) {
if rsrcsym != nil {
Diag("too many .rsrc sections")
}
rsrcsym = sym
}
func addpersrc() {
var h *IMAGE_SECTION_HEADER
var p []byte
var val uint32
var r *Reloc
var ri int
if rsrcsym == nil {
return
}
h = addpesection(".rsrc", int(rsrcsym.Size), int(rsrcsym.Size))
h.Characteristics = IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE | IMAGE_SCN_CNT_INITIALIZED_DATA
chksectoff(h, Cpos())
// relocation
for ri = 0; ri < len(rsrcsym.R); ri++ {
r = &rsrcsym.R[ri]
p = rsrcsym.P[r.Off:]
val = uint32(int64(h.VirtualAddress) + r.Add)
// 32-bit little-endian
p[0] = byte(val)
p[1] = byte(val >> 8)
p[2] = byte(val >> 16)
p[3] = byte(val >> 24)
}
Cwrite(rsrcsym.P)
strnput("", int(int64(h.SizeOfRawData)-rsrcsym.Size))
// update data directory
dd[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress = h.VirtualAddress
dd[IMAGE_DIRECTORY_ENTRY_RESOURCE].Size = h.VirtualSize
}
func Asmbpe() {
var t *IMAGE_SECTION_HEADER
var d *IMAGE_SECTION_HEADER
switch Thearch.Thechar {
default:
Diag("unknown PE architecture")
Errorexit()
fallthrough
case '6':
fh.Machine = IMAGE_FILE_MACHINE_AMD64
case '8':
fh.Machine = IMAGE_FILE_MACHINE_I386
}
t = addpesection(".text", int(Segtext.Length), int(Segtext.Length))
t.Characteristics = IMAGE_SCN_CNT_CODE | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ
chksectseg(t, &Segtext)
textsect = pensect
d = addpesection(".data", int(Segdata.Length), int(Segdata.Filelen))
d.Characteristics = IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE
chksectseg(d, &Segdata)
datasect = pensect
if Debug['s'] == 0 {
dwarfaddpeheaders()
}
Cseek(int64(nextfileoff))
addimports(d)
addexports()
addpesymtable()
addpersrc()
fh.NumberOfSections = uint16(pensect)
// Being able to produce identical output for identical input is
// much more beneficial than having build timestamp in the header.
fh.TimeDateStamp = 0
fh.Characteristics = IMAGE_FILE_RELOCS_STRIPPED | IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DEBUG_STRIPPED
if pe64 != 0 {
fh.SizeOfOptionalHeader = uint16(binary.Size(&oh64))
fh.Characteristics |= IMAGE_FILE_LARGE_ADDRESS_AWARE
oh64.Magic = 0x20b
} else {
fh.SizeOfOptionalHeader = uint16(binary.Size(&oh))
fh.Characteristics |= IMAGE_FILE_32BIT_MACHINE
oh.Magic = 0x10b // PE32
oh.BaseOfData = d.VirtualAddress
}
// Fill out both oh64 and oh. We only use one. Oh well.
oh64.MajorLinkerVersion = 3
oh.MajorLinkerVersion = 3
oh64.MinorLinkerVersion = 0
oh.MinorLinkerVersion = 0
oh64.SizeOfCode = t.SizeOfRawData
oh.SizeOfCode = t.SizeOfRawData
oh64.SizeOfInitializedData = d.SizeOfRawData
oh.SizeOfInitializedData = d.SizeOfRawData
oh64.SizeOfUninitializedData = 0
oh.SizeOfUninitializedData = 0
oh64.AddressOfEntryPoint = uint32(Entryvalue() - PEBASE)
oh.AddressOfEntryPoint = uint32(Entryvalue() - PEBASE)
oh64.BaseOfCode = t.VirtualAddress
oh.BaseOfCode = t.VirtualAddress
oh64.ImageBase = PEBASE
oh.ImageBase = PEBASE
oh64.SectionAlignment = PESECTALIGN
oh.SectionAlignment = PESECTALIGN
oh64.FileAlignment = PEFILEALIGN
oh.FileAlignment = PEFILEALIGN
oh64.MajorOperatingSystemVersion = 4
oh.MajorOperatingSystemVersion = 4
oh64.MinorOperatingSystemVersion = 0
oh.MinorOperatingSystemVersion = 0
oh64.MajorImageVersion = 1
oh.MajorImageVersion = 1
oh64.MinorImageVersion = 0
oh.MinorImageVersion = 0
oh64.MajorSubsystemVersion = 4
oh.MajorSubsystemVersion = 4
oh64.MinorSubsystemVersion = 0
oh.MinorSubsystemVersion = 0
oh64.SizeOfImage = uint32(nextsectoff)
oh.SizeOfImage = uint32(nextsectoff)
oh64.SizeOfHeaders = uint32(PEFILEHEADR)
oh.SizeOfHeaders = uint32(PEFILEHEADR)
if headstring == "windowsgui" {
oh64.Subsystem = IMAGE_SUBSYSTEM_WINDOWS_GUI
oh.Subsystem = IMAGE_SUBSYSTEM_WINDOWS_GUI
} else {
oh64.Subsystem = IMAGE_SUBSYSTEM_WINDOWS_CUI
oh.Subsystem = IMAGE_SUBSYSTEM_WINDOWS_CUI
}
// Disable stack growth as we don't want Windows to
// fiddle with the thread stack limits, which we set
// ourselves to circumvent the stack checks in the
// Windows exception dispatcher.
// Commit size must be strictly less than reserve
// size otherwise reserve will be rounded up to a
// larger size, as verified with VMMap.
// Go code would be OK with 64k stacks, but we need larger stacks for cgo.
// That default stack reserve size affects only the main thread,
// for other threads we specify stack size in runtime explicitly
// (runtime knows whether cgo is enabled or not).
// If you change stack reserve sizes here,
// change STACKSIZE in runtime/cgo/gcc_windows_{386,amd64}.c as well.
if !iscgo {
oh64.SizeOfStackReserve = 0x00010000
oh.SizeOfStackReserve = 0x00010000
oh64.SizeOfStackCommit = 0x0000ffff
oh.SizeOfStackCommit = 0x0000ffff
} else {
oh64.SizeOfStackReserve = 0x00200000
oh.SizeOfStackReserve = 0x00100000
// account for 2 guard pages
oh64.SizeOfStackCommit = 0x00200000 - 0x2000
oh.SizeOfStackCommit = 0x00100000 - 0x2000
}
oh64.SizeOfHeapReserve = 0x00100000
oh.SizeOfHeapReserve = 0x00100000
oh64.SizeOfHeapCommit = 0x00001000
oh.SizeOfHeapCommit = 0x00001000
oh64.NumberOfRvaAndSizes = 16
oh.NumberOfRvaAndSizes = 16
pewrite()
}
Reference in a new issue Copy permalink