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cmd/internal/ld, cmd/6l: external linking for windows/amd64

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Change-Id: I2d2ea233f976aab3f356f9b508cdd246d5013e30
Signed-off-by: Shenghou Ma <minux@golang.org>
Reviewed-on: https://go-review.googlesource.com/7534
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Shenghou Ma 2015-03-13 22:10:48 -04:00 • committed by Minux Ma
parent 484d9399de
commit e7df053977
4 changed files with 66 additions and 10 deletions
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53
src/cmd/6l/asm.go
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@ -204,10 +204,16 @@ func adddynrel(s *ld.LSym, r *ld.Reloc) {
switch r.Type {
case ld.R_CALL,
ld.R_PCREL:
addpltsym(targ)
r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
r.Add = int64(targ.Plt)
return
if ld.HEADTYPE == ld.Hwindows {
// nothing to do, the relocation will be laid out in pereloc1
return
} else {
// for both ELF and Mach-O
addpltsym(targ)
r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
r.Add = int64(targ.Plt)
return
}
case ld.R_ADDR:
if s.Type == ld.STEXT && ld.Iself {
@ -262,6 +268,11 @@ func adddynrel(s *ld.LSym, r *ld.Reloc) {
r.Type = 256 // ignore during relocsym
return
}
if ld.HEADTYPE == ld.Hwindows {
// nothing to do, the relocation will be laid out in pereloc1
return
}
}
ld.Ctxt.Cursym = s
@ -393,6 +404,40 @@ func machoreloc1(r *ld.Reloc, sectoff int64) int {
return 0
}
func pereloc1(r *ld.Reloc, sectoff int64) bool {
var v uint32
rs := r.Xsym
if rs.Dynid < 0 {
ld.Diag("reloc %d to non-coff symbol %s type=%d", r.Type, rs.Name, rs.Type)
return false
}
ld.Thearch.Lput(uint32(sectoff))
ld.Thearch.Lput(uint32(rs.Dynid))
switch r.Type {
default:
return false
case ld.R_ADDR:
if r.Siz == 8 {
v = ld.IMAGE_REL_AMD64_ADDR64
} else {
v = ld.IMAGE_REL_AMD64_ADDR32
}
case ld.R_CALL,
ld.R_PCREL:
v = ld.IMAGE_REL_AMD64_REL32
}
ld.Thearch.Wput(uint16(v))
return true
}
func archreloc(r *ld.Reloc, s *ld.LSym, val *int64) int {
return -1
}