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cmd/link: remove dependency on sys.ArchFamily values

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Change-Id: I858054b72847f4f27a1ebbdaff82820a28c03743
Reviewed-on: https://go-review.googlesource.com/21627
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Matthew Dempsky 2016-04-06 20:06:12 -07:00
parent d481ffc1af
commit 22ef687da8
1 changed files with 78 additions and 69 deletions
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147
src/cmd/link/internal/ld/ldelf.go
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@ -927,7 +927,8 @@ func ldelf(f *obj.Biobuf, pkg string, length int64, pn string) {
rp.Sym = sym.sym rp.Sym = sym.sym
} }
rp.Type = int32(reltype(pn, int(uint32(info)), &rp.Siz)) rp.Type = 256 + int32(info)
rp.Siz = relSize(pn, uint32(info))
if rela != 0 { if rela != 0 {
rp.Add = int64(add) rp.Add = int64(add)
} else { } else {
@ -1128,81 +1129,89 @@ func (x rbyoff) Less(i, j int) bool {
return false return false
} }
func reltype(pn string, elftype int, siz *uint8) int { func relSize(pn string, elftype uint32) uint8 {
// TODO(mdempsky): Remove dependency on ArchFamily char values. // TODO(mdempsky): Replace this with a struct-valued switch statement
// once golang.org/issue/15164 is fixed or found to not impair cmd/link
// performance.
switch uint32(SysArch.Family) | uint32(elftype)<<24 { const (
AMD64 = uint32(sys.AMD64)
ARM = uint32(sys.ARM)
I386 = uint32(sys.I386)
PPC64 = uint32(sys.PPC64)
S390X = uint32(sys.S390X)
)
switch uint32(SysArch.Family) | elftype<<24 {
default: default:
Diag("%s: unknown relocation type %d; compiled without -fpic?", pn, elftype) Diag("%s: unknown relocation type %d; compiled without -fpic?", pn, elftype)
fallthrough fallthrough
case 'z' | R_390_8: case S390X | R_390_8<<24:
*siz = 1 return 1
case '9' | R_PPC64_TOC16<<24, case PPC64 | R_PPC64_TOC16<<24,
'9' | R_PPC64_TOC16_LO<<24, PPC64 | R_PPC64_TOC16_LO<<24,
'9' | R_PPC64_TOC16_HI<<24, PPC64 | R_PPC64_TOC16_HI<<24,
'9' | R_PPC64_TOC16_HA<<24, PPC64 | R_PPC64_TOC16_HA<<24,
'9' | R_PPC64_TOC16_DS<<24, PPC64 | R_PPC64_TOC16_DS<<24,
'9' | R_PPC64_TOC16_LO_DS<<24, PPC64 | R_PPC64_TOC16_LO_DS<<24,
'9' | R_PPC64_REL16_LO<<24, PPC64 | R_PPC64_REL16_LO<<24,
'9' | R_PPC64_REL16_HI<<24, PPC64 | R_PPC64_REL16_HI<<24,
'9' | R_PPC64_REL16_HA<<24, PPC64 | R_PPC64_REL16_HA<<24,
'z' | R_390_16<<24, S390X | R_390_16<<24,
'z' | R_390_GOT16<<24, S390X | R_390_GOT16<<24,
'z' | R_390_PC16<<24, S390X | R_390_PC16<<24,
'z' | R_390_PC16DBL<<24, S390X | R_390_PC16DBL<<24,
'z' | R_390_PLT16DBL<<24: S390X | R_390_PLT16DBL<<24:
*siz = 2 return 2
case '5' | R_ARM_ABS32<<24, case ARM | R_ARM_ABS32<<24,
'5' | R_ARM_GOT32<<24, ARM | R_ARM_GOT32<<24,
'5' | R_ARM_PLT32<<24, ARM | R_ARM_PLT32<<24,
'5' | R_ARM_GOTOFF<<24, ARM | R_ARM_GOTOFF<<24,
'5' | R_ARM_GOTPC<<24, ARM | R_ARM_GOTPC<<24,
'5' | R_ARM_THM_PC22<<24, ARM | R_ARM_THM_PC22<<24,
'5' | R_ARM_REL32<<24, ARM | R_ARM_REL32<<24,
'5' | R_ARM_CALL<<24, ARM | R_ARM_CALL<<24,
'5' | R_ARM_V4BX<<24, ARM | R_ARM_V4BX<<24,
'5' | R_ARM_GOT_PREL<<24, ARM | R_ARM_GOT_PREL<<24,
'5' | R_ARM_PC24<<24, ARM | R_ARM_PC24<<24,
'5' | R_ARM_JUMP24<<24, ARM | R_ARM_JUMP24<<24,
'6' | R_X86_64_PC32<<24, AMD64 | R_X86_64_PC32<<24,
'6' | R_X86_64_PLT32<<24, AMD64 | R_X86_64_PLT32<<24,
'6' | R_X86_64_GOTPCREL<<24, AMD64 | R_X86_64_GOTPCREL<<24,
'6' | R_X86_64_GOTPCRELX<<24, AMD64 | R_X86_64_GOTPCRELX<<24,
'6' | R_X86_64_REX_GOTPCRELX<<24, AMD64 | R_X86_64_REX_GOTPCRELX<<24,
'8' | R_386_32<<24, I386 | R_386_32<<24,
'8' | R_386_PC32<<24, I386 | R_386_PC32<<24,
'8' | R_386_GOT32<<24, I386 | R_386_GOT32<<24,
'8' | R_386_PLT32<<24, I386 | R_386_PLT32<<24,
'8' | R_386_GOTOFF<<24, I386 | R_386_GOTOFF<<24,
'8' | R_386_GOTPC<<24, I386 | R_386_GOTPC<<24,
'8' | R_386_GOT32X<<24, I386 | R_386_GOT32X<<24,
'9' | R_PPC64_REL24<<24, PPC64 | R_PPC64_REL24<<24,
'9' | R_PPC_REL32<<24, PPC64 | R_PPC_REL32<<24,
'z' | R_390_32<<24, S390X | R_390_32<<24,
'z' | R_390_PC32<<24, S390X | R_390_PC32<<24,
'z' | R_390_GOT32<<24, S390X | R_390_GOT32<<24,
'z' | R_390_PLT32<<24, S390X | R_390_PLT32<<24,
'z' | R_390_PC32DBL<<24, S390X | R_390_PC32DBL<<24,
'z' | R_390_PLT32DBL<<24, S390X | R_390_PLT32DBL<<24,
'z' | R_390_GOTPCDBL<<24, S390X | R_390_GOTPCDBL<<24,
'z' | R_390_GOTENT<<24: S390X | R_390_GOTENT<<24:
*siz = 4 return 4
case '6' | R_X86_64_64<<24, case AMD64 | R_X86_64_64<<24,
'9' | R_PPC64_ADDR64<<24, PPC64 | R_PPC64_ADDR64<<24,
'z' | R_390_GLOB_DAT<<24, S390X | R_390_GLOB_DAT<<24,
'z' | R_390_RELATIVE<<24, S390X | R_390_RELATIVE<<24,
'z' | R_390_GOTOFF<<24, S390X | R_390_GOTOFF<<24,
'z' | R_390_GOTPC<<24, S390X | R_390_GOTPC<<24,
'z' | R_390_64<<24, S390X | R_390_64<<24,
'z' | R_390_PC64<<24, S390X | R_390_PC64<<24,
'z' | R_390_GOT64<<24, S390X | R_390_GOT64<<24,
'z' | R_390_PLT64<<24: S390X | R_390_PLT64<<24:
*siz = 8 return 8
} }
return 256 + elftype
} }