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cmd/link: introduce and use peFile.emitRelocations

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Change-Id: I2458d1391af063d99ba1e446bcf12f7c41ae5f6b
Reviewed-on: https://go-review.googlesource.com/59419
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Alex Brainman 2017-08-28 13:14:43 +10:00
parent 04d410d6cd
commit 3558c16d48
1 changed files with 52 additions and 52 deletions
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104
src/cmd/link/internal/ld/pe.go
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@ -548,6 +548,57 @@ func (f *peFile) addInitArray(ctxt *Link) *peSection {
return sect
}
// emitRelocations emits relocation entries for go.o in external linking.
func (f *peFile) emitRelocations(ctxt *Link, text, data, ctors *peSection) {
for coutbuf.Offset()&7 != 0 {
Cput(0)
}
text.emitRelocations(func() int {
n := perelocsect(ctxt, Segtext.Sections[0], ctxt.Textp, Segtext.Vaddr)
for _, sect := range Segtext.Sections[1:] {
n += perelocsect(ctxt, sect, datap, Segtext.Vaddr)
}
return n
})
data.emitRelocations(func() int {
var n int
for _, sect := range Segdata.Sections {
n += perelocsect(ctxt, sect, datap, Segdata.Vaddr)
}
return n
})
dwarfLoop:
for _, sect := range Segdwarf.Sections {
for _, pesect := range f.sections {
if sect.Name == pesect.name {
pesect.emitRelocations(func() int {
return perelocsect(ctxt, sect, dwarfp, sect.Vaddr)
})
continue dwarfLoop
}
}
Errorf(nil, "emitRelocations: could not find %q section", sect.Name)
}
ctors.emitRelocations(func() int {
dottext := ctxt.Syms.Lookup(".text", 0)
Lputl(0)
Lputl(uint32(dottext.Dynid))
switch objabi.GOARCH {
default:
Errorf(dottext, "unknown architecture for PE: %q\n", objabi.GOARCH)
case "386":
Wputl(IMAGE_REL_I386_DIR32)
case "amd64":
Wputl(IMAGE_REL_AMD64_ADDR64)
}
return 1
})
}
var pefile peFile
func Peinit(ctxt *Link) {
@ -976,57 +1027,6 @@ func perelocsect(ctxt *Link, sect *Section, syms []*Symbol, base uint64) int {
return relocs
}
// peemitreloc emits relocation entries for go.o in external linking.
func peemitreloc(ctxt *Link, text, data, ctors *peSection) {
for coutbuf.Offset()&7 != 0 {
Cput(0)
}
text.emitRelocations(func() int {
n := perelocsect(ctxt, Segtext.Sections[0], ctxt.Textp, Segtext.Vaddr)
for _, sect := range Segtext.Sections[1:] {
n += perelocsect(ctxt, sect, datap, Segtext.Vaddr)
}
return n
})
data.emitRelocations(func() int {
var n int
for _, sect := range Segdata.Sections {
n += perelocsect(ctxt, sect, datap, Segdata.Vaddr)
}
return n
})
dwarfLoop:
for _, sect := range Segdwarf.Sections {
for _, pesect := range pefile.sections {
if sect.Name == pesect.name {
pesect.emitRelocations(func() int {
return perelocsect(ctxt, sect, dwarfp, sect.Vaddr)
})
continue dwarfLoop
}
}
Errorf(nil, "peemitreloc: could not find %q section", sect.Name)
}
ctors.emitRelocations(func() int {
dottext := ctxt.Syms.Lookup(".text", 0)
Lputl(0)
Lputl(uint32(dottext.Dynid))
switch objabi.GOARCH {
default:
Errorf(dottext, "unknown architecture for PE: %q\n", objabi.GOARCH)
case "386":
Wputl(IMAGE_REL_I386_DIR32)
case "amd64":
Wputl(IMAGE_REL_AMD64_ADDR64)
}
return 1
})
}
func (ctxt *Link) dope() {
/* relocation table */
rel := ctxt.Syms.Lookup(".rel", 0)
@ -1257,7 +1257,7 @@ func Asmbpe(ctxt *Link) {
addpesymtable(ctxt)
addpersrc(ctxt)
if Linkmode == LinkExternal {
peemitreloc(ctxt, t, d, c)
pefile.emitRelocations(ctxt, t, d, c)
}
fh.NumberOfSections = uint16(len(pefile.sections))