mirror of
https://github.com/golang/go
synced 2024-11-05 15:06:09 -07:00
[dev.link] cmd/link: convert asmb2 pass to new style on darwin
Now we no longer do loadlibfull on darwin. While here, remove residual darwin/386 and darwin/arm code. Change-Id: I6efdcd81baeeca29d1fe91c4fab0cc8241a58e2d Reviewed-on: https://go-review.googlesource.com/c/go/+/232597 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Jeremy Faller <jeremy@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Cherry Zhang
parent
2867a85541
commit
75ca90e309
@ -458,28 +458,29 @@ func elfreloc2(ctxt *ld.Link, ldr *loader.Loader, s loader.Sym, r loader.ExtRelo
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return true
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}
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func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
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func machoreloc1(arch *sys.Arch, out *ld.OutBuf, ldr *loader.Loader, s loader.Sym, r loader.ExtRelocView, sectoff int64) bool {
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var v uint32
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rs := r.Xsym
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rt := r.Type()
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if rs.Type == sym.SHOSTOBJ || r.Type == objabi.R_PCREL || r.Type == objabi.R_GOTPCREL || r.Type == objabi.R_CALL {
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if rs.Dynid < 0 {
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ld.Errorf(s, "reloc %d (%s) to non-macho symbol %s type=%d (%s)", r.Type, sym.RelocName(arch, r.Type), rs.Name, rs.Type, rs.Type)
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if ldr.SymType(rs) == sym.SHOSTOBJ || rt == objabi.R_PCREL || rt == objabi.R_GOTPCREL || rt == objabi.R_CALL {
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if ldr.SymDynid(rs) < 0 {
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ldr.Errorf(s, "reloc %d (%s) to non-macho symbol %s type=%d (%s)", rt, sym.RelocName(arch, rt), ldr.SymName(rs), ldr.SymType(rs), ldr.SymType(rs))
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return false
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}
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v = uint32(rs.Dynid)
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v = uint32(ldr.SymDynid(rs))
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v |= 1 << 27 // external relocation
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} else {
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v = uint32(rs.Sect.Extnum)
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v = uint32(ldr.SymSect(rs).Extnum)
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if v == 0 {
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ld.Errorf(s, "reloc %d (%s) to symbol %s in non-macho section %s type=%d (%s)", r.Type, sym.RelocName(arch, r.Type), rs.Name, rs.Sect.Name, rs.Type, rs.Type)
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ldr.Errorf(s, "reloc %d (%s) to symbol %s in non-macho section %s type=%d (%s)", rt, sym.RelocName(arch, rt), ldr.SymName(rs), ldr.SymSect(rs).Name, ldr.SymType(rs), ldr.SymType(rs))
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return false
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}
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}
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switch r.Type {
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switch rt {
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default:
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return false
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@ -499,7 +500,7 @@ func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, se
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v |= ld.MACHO_X86_64_RELOC_GOT_LOAD << 28
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}
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switch r.Siz {
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switch r.Siz() {
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default:
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return false
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@ -318,7 +318,7 @@ func elfsetupplt(ctxt *ld.Link, plt, got *loader.SymbolBuilder, dynamic loader.S
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}
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}
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func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
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func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool {
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return false
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}
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@ -371,41 +371,43 @@ func elfreloc1(ctxt *ld.Link, r *sym.Reloc, sectoff int64) bool {
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return true
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}
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func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
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func machoreloc1(arch *sys.Arch, out *ld.OutBuf, ldr *loader.Loader, s loader.Sym, r loader.ExtRelocView, sectoff int64) bool {
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var v uint32
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rs := r.Xsym
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rt := r.Type()
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siz := r.Siz()
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if rs.Type == sym.SHOSTOBJ || r.Type == objabi.R_CALLARM64 || r.Type == objabi.R_ADDRARM64 {
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if rs.Dynid < 0 {
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ld.Errorf(s, "reloc %d (%s) to non-macho symbol %s type=%d (%s)", r.Type, sym.RelocName(arch, r.Type), rs.Name, rs.Type, rs.Type)
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if ldr.SymType(rs) == sym.SHOSTOBJ || rt == objabi.R_CALLARM64 || rt == objabi.R_ADDRARM64 {
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if ldr.SymDynid(rs) < 0 {
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ldr.Errorf(s, "reloc %d (%s) to non-macho symbol %s type=%d (%s)", rt, sym.RelocName(arch, rt), ldr.SymName(rs), ldr.SymType(rs), ldr.SymType(rs))
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return false
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}
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v = uint32(rs.Dynid)
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v = uint32(ldr.SymDynid(rs))
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v |= 1 << 27 // external relocation
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} else {
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v = uint32(rs.Sect.Extnum)
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v = uint32(ldr.SymSect(rs).Extnum)
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if v == 0 {
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ld.Errorf(s, "reloc %d (%s) to symbol %s in non-macho section %s type=%d (%s)", r.Type, sym.RelocName(arch, r.Type), rs.Name, rs.Sect.Name, rs.Type, rs.Type)
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ldr.Errorf(s, "reloc %d (%s) to symbol %s in non-macho section %s type=%d (%s)", rt, sym.RelocName(arch, rt), ldr.SymName(rs), ldr.SymSect(rs).Name, ldr.SymType(rs), ldr.SymType(rs))
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return false
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}
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}
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switch r.Type {
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switch rt {
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default:
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return false
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case objabi.R_ADDR:
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v |= ld.MACHO_ARM64_RELOC_UNSIGNED << 28
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case objabi.R_CALLARM64:
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if r.Xadd != 0 {
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ld.Errorf(s, "ld64 doesn't allow BR26 reloc with non-zero addend: %s+%d", rs.Name, r.Xadd)
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ldr.Errorf(s, "ld64 doesn't allow BR26 reloc with non-zero addend: %s+%d", ldr.SymName(rs), r.Xadd)
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}
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v |= 1 << 24 // pc-relative bit
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v |= ld.MACHO_ARM64_RELOC_BRANCH26 << 28
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case objabi.R_ADDRARM64:
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r.Siz = 4
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siz = 4
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// Two relocation entries: MACHO_ARM64_RELOC_PAGEOFF12 MACHO_ARM64_RELOC_PAGE21
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// if r.Xadd is non-zero, add two MACHO_ARM64_RELOC_ADDEND.
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if r.Xadd != 0 {
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@ -422,7 +424,7 @@ func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, se
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v |= ld.MACHO_ARM64_RELOC_PAGE21 << 28
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}
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switch r.Siz {
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switch siz {
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default:
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return false
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case 1:
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@ -277,7 +277,7 @@ type Arch struct {
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Elfsetupplt func(ctxt *Link, plt, gotplt *loader.SymbolBuilder, dynamic loader.Sym)
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Gentext func(*Link)
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Gentext2 func(*Link, *loader.Loader)
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Machoreloc1 func(*sys.Arch, *OutBuf, *sym.Symbol, *sym.Reloc, int64) bool
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Machoreloc1 func(*sys.Arch, *OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool
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PEreloc1 func(*sys.Arch, *OutBuf, *sym.Symbol, *sym.Reloc, int64) bool
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Xcoffreloc1 func(*sys.Arch, *OutBuf, *sym.Symbol, *sym.Reloc, int64) bool
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@ -2692,6 +2692,22 @@ func Entryvalue(ctxt *Link) int64 {
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return s.Value
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}
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func Entryvalue2(ctxt *Link) int64 {
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a := *flagEntrySymbol
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if a[0] >= '0' && a[0] <= '9' {
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return atolwhex(a)
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}
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s := ctxt.loader.Lookup(a, 0)
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typ := ctxt.loader.SymType(s)
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if typ == 0 {
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return *FlagTextAddr
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}
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if ctxt.HeadType != objabi.Haix && typ != sym.STEXT {
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ctxt.Errorf(s, "entry not text")
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}
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return ctxt.loader.SymValue(s)
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}
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func (ctxt *Link) callgraph() {
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if !*FlagC {
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return
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@ -501,9 +501,8 @@ func machoshbits(ctxt *Link, mseg *MachoSeg, sect *sym.Section, segname string)
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var msect *MachoSect
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if sect.Rwx&1 == 0 && segname != "__DWARF" && (ctxt.Arch.Family == sys.ARM64 ||
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ctxt.Arch.Family == sys.ARM ||
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(ctxt.Arch.Family == sys.AMD64 && ctxt.BuildMode != BuildModeExe)) {
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// Darwin external linker on arm and arm64, and on amd64 in c-shared/c-archive buildmode
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// Darwin external linker on arm64, and on amd64 in c-shared/c-archive buildmode
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// complains about absolute relocs in __TEXT, so if the section is not
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// executable, put it in __DATA segment.
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msect = newMachoSect(mseg, buf, "__DATA")
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@ -551,7 +550,7 @@ func machoshbits(ctxt *Link, mseg *MachoSeg, sect *sym.Section, segname string)
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if sect.Name == ".got" {
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msect.name = "__nl_symbol_ptr"
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msect.flag = S_NON_LAZY_SYMBOL_POINTERS
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msect.res1 = uint32(ctxt.Syms.Lookup(".linkedit.plt", 0).Size / 4) /* offset into indirect symbol table */
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msect.res1 = uint32(ctxt.loader.SymSize(ctxt.ArchSyms.LinkEditPLT2) / 4) /* offset into indirect symbol table */
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}
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if sect.Name == ".init_array" {
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@ -584,10 +583,6 @@ func Asmbmacho(ctxt *Link) {
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default:
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Exitf("unknown macho architecture: %v", ctxt.Arch.Family)
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case sys.ARM:
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mh.cpu = MACHO_CPU_ARM
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mh.subcpu = MACHO_SUBCPU_ARMV7
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case sys.AMD64:
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mh.cpu = MACHO_CPU_AMD64
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mh.subcpu = MACHO_SUBCPU_X86
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@ -595,10 +590,6 @@ func Asmbmacho(ctxt *Link) {
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case sys.ARM64:
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mh.cpu = MACHO_CPU_ARM64
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mh.subcpu = MACHO_SUBCPU_ARM64_ALL
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case sys.I386:
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mh.cpu = MACHO_CPU_386
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mh.subcpu = MACHO_SUBCPU_X86
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}
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var ms *MachoSeg
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@ -669,45 +660,35 @@ func Asmbmacho(ctxt *Link) {
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default:
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Exitf("unknown macho architecture: %v", ctxt.Arch.Family)
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case sys.ARM:
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ml := newMachoLoad(ctxt.Arch, LC_UNIXTHREAD, 17+2)
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ml.data[0] = 1 /* thread type */
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ml.data[1] = 17 /* word count */
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ml.data[2+15] = uint32(Entryvalue(ctxt)) /* start pc */
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case sys.AMD64:
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ml := newMachoLoad(ctxt.Arch, LC_UNIXTHREAD, 42+2)
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ml.data[0] = 4 /* thread type */
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ml.data[1] = 42 /* word count */
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ml.data[2+32] = uint32(Entryvalue(ctxt)) /* start pc */
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ml.data[2+32+1] = uint32(Entryvalue(ctxt) >> 32)
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ml.data[0] = 4 /* thread type */
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ml.data[1] = 42 /* word count */
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ml.data[2+32] = uint32(Entryvalue2(ctxt)) /* start pc */
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ml.data[2+32+1] = uint32(Entryvalue2(ctxt) >> 32)
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case sys.ARM64:
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ml := newMachoLoad(ctxt.Arch, LC_UNIXTHREAD, 68+2)
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ml.data[0] = 6 /* thread type */
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ml.data[1] = 68 /* word count */
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ml.data[2+64] = uint32(Entryvalue(ctxt)) /* start pc */
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ml.data[2+64+1] = uint32(Entryvalue(ctxt) >> 32)
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case sys.I386:
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ml := newMachoLoad(ctxt.Arch, LC_UNIXTHREAD, 16+2)
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ml.data[0] = 1 /* thread type */
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ml.data[1] = 16 /* word count */
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ml.data[2+10] = uint32(Entryvalue(ctxt)) /* start pc */
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ml.data[0] = 6 /* thread type */
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ml.data[1] = 68 /* word count */
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ml.data[2+64] = uint32(Entryvalue2(ctxt)) /* start pc */
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ml.data[2+64+1] = uint32(Entryvalue2(ctxt) >> 32)
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}
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}
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if !*FlagD {
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ldr := ctxt.loader
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// must match domacholink below
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s1 := ctxt.Syms.Lookup(".machosymtab", 0)
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s2 := ctxt.Syms.Lookup(".linkedit.plt", 0)
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s3 := ctxt.Syms.Lookup(".linkedit.got", 0)
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s4 := ctxt.Syms.Lookup(".machosymstr", 0)
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s1 := ldr.SymSize(ldr.Lookup(".machosymtab", 0))
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s2 := ldr.SymSize(ctxt.ArchSyms.LinkEditPLT2)
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s3 := ldr.SymSize(ctxt.ArchSyms.LinkEditGOT2)
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s4 := ldr.SymSize(ldr.Lookup(".machosymstr", 0))
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if ctxt.LinkMode != LinkExternal {
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ms := newMachoSeg("__LINKEDIT", 0)
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ms.vaddr = uint64(va) + uint64(v) + uint64(Rnd(int64(Segdata.Length), int64(*FlagRound)))
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ms.vsize = uint64(s1.Size) + uint64(s2.Size) + uint64(s3.Size) + uint64(s4.Size)
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ms.vsize = uint64(s1) + uint64(s2) + uint64(s3) + uint64(s4)
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ms.fileoffset = uint64(linkoff)
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ms.filesize = ms.vsize
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ms.prot1 = 7
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@ -715,10 +696,10 @@ func Asmbmacho(ctxt *Link) {
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}
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ml := newMachoLoad(ctxt.Arch, LC_SYMTAB, 4)
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ml.data[0] = uint32(linkoff) /* symoff */
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ml.data[1] = uint32(nsortsym) /* nsyms */
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ml.data[2] = uint32(linkoff + s1.Size + s2.Size + s3.Size) /* stroff */
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ml.data[3] = uint32(s4.Size) /* strsize */
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ml.data[0] = uint32(linkoff) /* symoff */
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ml.data[1] = uint32(nsortsym) /* nsyms */
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ml.data[2] = uint32(linkoff + s1 + s2 + s3) /* stroff */
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ml.data[3] = uint32(s4) /* strsize */
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machodysymtab(ctxt)
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@ -870,38 +851,39 @@ func machosymorder(ctxt *Link) {
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//
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// When dynamically linking, all non-local variables and plugin-exported
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// symbols need to be exported.
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func machoShouldExport(ctxt *Link, s *sym.Symbol) bool {
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if !ctxt.DynlinkingGo() || s.Attr.Local() {
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func machoShouldExport(ctxt *Link, ldr *loader.Loader, s loader.Sym) bool {
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if !ctxt.DynlinkingGo() || ldr.AttrLocal(s) {
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return false
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}
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if ctxt.BuildMode == BuildModePlugin && strings.HasPrefix(s.Extname(), objabi.PathToPrefix(*flagPluginPath)) {
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if ctxt.BuildMode == BuildModePlugin && strings.HasPrefix(ldr.SymExtname(s), objabi.PathToPrefix(*flagPluginPath)) {
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return true
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}
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if strings.HasPrefix(s.Name, "go.itab.") {
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name := ldr.RawSymName(s)
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if strings.HasPrefix(name, "go.itab.") {
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return true
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}
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if strings.HasPrefix(s.Name, "type.") && !strings.HasPrefix(s.Name, "type..") {
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if strings.HasPrefix(name, "type.") && !strings.HasPrefix(name, "type..") {
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// reduce runtime typemap pressure, but do not
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// export alg functions (type..*), as these
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// appear in pclntable.
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return true
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}
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if strings.HasPrefix(s.Name, "go.link.pkghash") {
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if strings.HasPrefix(name, "go.link.pkghash") {
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return true
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}
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return s.Type >= sym.SFirstWritable // only writable sections
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return ldr.SymType(s) >= sym.SFirstWritable // only writable sections
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}
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func machosymtab(ctxt *Link) {
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symtab := ctxt.Syms.Lookup(".machosymtab", 0)
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symstr := ctxt.Syms.Lookup(".machosymstr", 0)
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ldr := ctxt.loader
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symtab := ldr.CreateSymForUpdate(".machosymtab", 0)
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symstr := ldr.CreateSymForUpdate(".machosymstr", 0)
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for i := 0; i < nsortsym; i++ {
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s := ctxt.loader.Syms[sortsym[i]]
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symtab.AddUint32(ctxt.Arch, uint32(symstr.Size))
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for _, s := range sortsym[:nsortsym] {
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symtab.AddUint32(ctxt.Arch, uint32(symstr.Size()))
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export := machoShouldExport(ctxt, s)
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isGoSymbol := strings.Contains(s.Extname(), ".")
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export := machoShouldExport(ctxt, ldr, s)
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isGoSymbol := strings.Contains(ldr.SymExtname(s), ".")
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// In normal buildmodes, only add _ to C symbols, as
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// Go symbols have dot in the name.
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@ -910,37 +892,37 @@ func machosymtab(ctxt *Link) {
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// symbols like crosscall2 are in pclntab and end up
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// pointing at the host binary, breaking unwinding.
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// See Issue #18190.
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cexport := !isGoSymbol && (ctxt.BuildMode != BuildModePlugin || onlycsymbol(s.Name))
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cexport := !isGoSymbol && (ctxt.BuildMode != BuildModePlugin || onlycsymbol(ldr.SymName(s)))
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if cexport || export || isGoSymbol {
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symstr.AddUint8('_')
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}
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// replace "·" as ".", because DTrace cannot handle it.
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Addstring(symstr, strings.Replace(s.Extname(), "·", ".", -1))
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symstr.Addstring(strings.Replace(ldr.SymExtname(s), "·", ".", -1))
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if s.Type == sym.SDYNIMPORT || s.Type == sym.SHOSTOBJ || s.Type == sym.SUNDEFEXT {
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if t := ldr.SymType(s); t == sym.SDYNIMPORT || t == sym.SHOSTOBJ || t == sym.SUNDEFEXT {
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symtab.AddUint8(0x01) // type N_EXT, external symbol
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symtab.AddUint8(0) // no section
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symtab.AddUint16(ctxt.Arch, 0) // desc
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symtab.AddUintXX(ctxt.Arch, 0, ctxt.Arch.PtrSize) // no value
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} else {
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if s.Attr.CgoExport() || export {
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if ldr.AttrCgoExport(s) || export {
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symtab.AddUint8(0x0f)
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} else {
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symtab.AddUint8(0x0e)
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}
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o := s
|
||||
for o.Outer != nil {
|
||||
o = o.Outer
|
||||
if outer := ldr.OuterSym(o); outer != 0 {
|
||||
o = outer
|
||||
}
|
||||
if o.Sect == nil {
|
||||
Errorf(s, "missing section for symbol")
|
||||
if ldr.SymSect(o) == nil {
|
||||
ldr.Errorf(s, "missing section for symbol")
|
||||
symtab.AddUint8(0)
|
||||
} else {
|
||||
symtab.AddUint8(uint8(o.Sect.Extnum))
|
||||
symtab.AddUint8(uint8(ldr.SymSect(o).Extnum))
|
||||
}
|
||||
symtab.AddUint16(ctxt.Arch, 0) // desc
|
||||
symtab.AddUintXX(ctxt.Arch, uint64(Symaddr(s)), ctxt.Arch.PtrSize)
|
||||
symtab.AddUintXX(ctxt.Arch, uint64(ldr.SymAddr(s)), ctxt.Arch.PtrSize)
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -967,13 +949,14 @@ func machodysymtab(ctxt *Link) {
|
||||
ml.data[10] = 0 /* extrefsymoff */
|
||||
ml.data[11] = 0 /* nextrefsyms */
|
||||
|
||||
// must match domacholink below
|
||||
s1 := ctxt.Syms.Lookup(".machosymtab", 0)
|
||||
ldr := ctxt.loader
|
||||
|
||||
s2 := ctxt.Syms.Lookup(".linkedit.plt", 0)
|
||||
s3 := ctxt.Syms.Lookup(".linkedit.got", 0)
|
||||
ml.data[12] = uint32(linkoff + s1.Size) /* indirectsymoff */
|
||||
ml.data[13] = uint32((s2.Size + s3.Size) / 4) /* nindirectsyms */
|
||||
// must match domacholink below
|
||||
s1 := ldr.SymSize(ldr.Lookup(".machosymtab", 0))
|
||||
s2 := ldr.SymSize(ctxt.ArchSyms.LinkEditPLT2)
|
||||
s3 := ldr.SymSize(ctxt.ArchSyms.LinkEditGOT2)
|
||||
ml.data[12] = uint32(linkoff + s1) /* indirectsymoff */
|
||||
ml.data[13] = uint32((s2 + s3) / 4) /* nindirectsyms */
|
||||
|
||||
ml.data[14] = 0 /* extreloff */
|
||||
ml.data[15] = 0 /* nextrel */
|
||||
@ -984,12 +967,13 @@ func machodysymtab(ctxt *Link) {
|
||||
func Domacholink(ctxt *Link) int64 {
|
||||
machosymtab(ctxt)
|
||||
|
||||
// write data that will be linkedit section
|
||||
s1 := ctxt.Syms.Lookup(".machosymtab", 0)
|
||||
ldr := ctxt.loader
|
||||
|
||||
s2 := ctxt.Syms.Lookup(".linkedit.plt", 0)
|
||||
s3 := ctxt.Syms.Lookup(".linkedit.got", 0)
|
||||
s4 := ctxt.Syms.Lookup(".machosymstr", 0)
|
||||
// write data that will be linkedit section
|
||||
s1 := ldr.Lookup(".machosymtab", 0)
|
||||
s2 := ctxt.ArchSyms.LinkEditPLT2
|
||||
s3 := ctxt.ArchSyms.LinkEditGOT2
|
||||
s4 := ldr.Lookup(".machosymstr", 0)
|
||||
|
||||
// Force the linkedit section to end on a 16-byte
|
||||
// boundary. This allows pure (non-cgo) Go binaries
|
||||
@ -1008,26 +992,27 @@ func Domacholink(ctxt *Link) int64 {
|
||||
// boundary, codesign_allocate will not need to apply
|
||||
// any alignment padding itself, working around the
|
||||
// issue.
|
||||
for s4.Size%16 != 0 {
|
||||
s4.AddUint8(0)
|
||||
s4b := ldr.MakeSymbolUpdater(s4)
|
||||
for s4b.Size()%16 != 0 {
|
||||
s4b.AddUint8(0)
|
||||
}
|
||||
|
||||
size := int(s1.Size + s2.Size + s3.Size + s4.Size)
|
||||
size := int(ldr.SymSize(s1) + ldr.SymSize(s2) + ldr.SymSize(s3) + ldr.SymSize(s4))
|
||||
|
||||
if size > 0 {
|
||||
linkoff = Rnd(int64(uint64(HEADR)+Segtext.Length), int64(*FlagRound)) + Rnd(int64(Segdata.Filelen), int64(*FlagRound)) + Rnd(int64(Segdwarf.Filelen), int64(*FlagRound))
|
||||
ctxt.Out.SeekSet(linkoff)
|
||||
|
||||
ctxt.Out.Write(s1.P[:s1.Size])
|
||||
ctxt.Out.Write(s2.P[:s2.Size])
|
||||
ctxt.Out.Write(s3.P[:s3.Size])
|
||||
ctxt.Out.Write(s4.P[:s4.Size])
|
||||
ctxt.Out.Write(ldr.Data(s1))
|
||||
ctxt.Out.Write(ldr.Data(s2))
|
||||
ctxt.Out.Write(ldr.Data(s3))
|
||||
ctxt.Out.Write(ldr.Data(s4))
|
||||
}
|
||||
|
||||
return Rnd(int64(size), int64(*FlagRound))
|
||||
}
|
||||
|
||||
func machorelocsect(ctxt *Link, sect *sym.Section, syms []*sym.Symbol) {
|
||||
func machorelocsect(ctxt *Link, ldr *loader.Loader, sect *sym.Section, syms []loader.Sym) {
|
||||
// If main section has no bits, nothing to relocate.
|
||||
if sect.Vaddr >= sect.Seg.Vaddr+sect.Seg.Filelen {
|
||||
return
|
||||
@ -1035,10 +1020,10 @@ func machorelocsect(ctxt *Link, sect *sym.Section, syms []*sym.Symbol) {
|
||||
|
||||
sect.Reloff = uint64(ctxt.Out.Offset())
|
||||
for i, s := range syms {
|
||||
if !s.Attr.Reachable() {
|
||||
if !ldr.AttrReachable(s) {
|
||||
continue
|
||||
}
|
||||
if uint64(s.Value) >= sect.Vaddr {
|
||||
if uint64(ldr.SymValue(s)) >= sect.Vaddr {
|
||||
syms = syms[i:]
|
||||
break
|
||||
}
|
||||
@ -1046,26 +1031,24 @@ func machorelocsect(ctxt *Link, sect *sym.Section, syms []*sym.Symbol) {
|
||||
|
||||
eaddr := int32(sect.Vaddr + sect.Length)
|
||||
for _, s := range syms {
|
||||
if !s.Attr.Reachable() {
|
||||
if !ldr.AttrReachable(s) {
|
||||
continue
|
||||
}
|
||||
if s.Value >= int64(eaddr) {
|
||||
if ldr.SymValue(s) >= int64(eaddr) {
|
||||
break
|
||||
}
|
||||
for ri := range s.R {
|
||||
r := &s.R[ri]
|
||||
if r.Done {
|
||||
relocs := ldr.ExtRelocs(s)
|
||||
for ri := 0; ri < relocs.Count(); ri++ {
|
||||
r := relocs.At(ri)
|
||||
if r.Xsym == 0 {
|
||||
ldr.Errorf(s, "missing xsym in relocation")
|
||||
continue
|
||||
}
|
||||
if r.Xsym == nil {
|
||||
Errorf(s, "missing xsym in relocation")
|
||||
continue
|
||||
if !ldr.AttrReachable(r.Xsym) {
|
||||
ldr.Errorf(s, "unreachable reloc %d (%s) target %v", r.Type(), sym.RelocName(ctxt.Arch, r.Type()), ldr.SymName(r.Xsym))
|
||||
}
|
||||
if !r.Xsym.Attr.Reachable() {
|
||||
Errorf(s, "unreachable reloc %d (%s) target %v", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Xsym.Name)
|
||||
}
|
||||
if !thearch.Machoreloc1(ctxt.Arch, ctxt.Out, s, r, int64(uint64(s.Value+int64(r.Off))-sect.Vaddr)) {
|
||||
Errorf(s, "unsupported obj reloc %d (%s)/%d to %s", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Siz, r.Sym.Name)
|
||||
if !thearch.Machoreloc1(ctxt.Arch, ctxt.Out, ldr, s, r, int64(uint64(ldr.SymValue(s)+int64(r.Off()))-sect.Vaddr)) {
|
||||
ldr.Errorf(s, "unsupported obj reloc %d (%s)/%d to %s", r.Type(), sym.RelocName(ctxt.Arch, r.Type()), r.Siz(), ldr.SymName(r.Sym()))
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1078,21 +1061,22 @@ func Machoemitreloc(ctxt *Link) {
|
||||
ctxt.Out.Write8(0)
|
||||
}
|
||||
|
||||
machorelocsect(ctxt, Segtext.Sections[0], ctxt.Textp)
|
||||
ldr := ctxt.loader
|
||||
machorelocsect(ctxt, ldr, Segtext.Sections[0], ctxt.Textp2)
|
||||
for _, sect := range Segtext.Sections[1:] {
|
||||
machorelocsect(ctxt, sect, ctxt.datap)
|
||||
machorelocsect(ctxt, ldr, sect, ctxt.datap2)
|
||||
}
|
||||
for _, sect := range Segdata.Sections {
|
||||
machorelocsect(ctxt, sect, ctxt.datap)
|
||||
machorelocsect(ctxt, ldr, sect, ctxt.datap2)
|
||||
}
|
||||
for i := 0; i < len(Segdwarf.Sections); i++ {
|
||||
sect := Segdwarf.Sections[i]
|
||||
si := dwarfp[i]
|
||||
if si.secSym() != sect.Sym ||
|
||||
si.secSym().Sect != sect {
|
||||
si := dwarfp2[i]
|
||||
if si.secSym() != loader.Sym(sect.Sym2) ||
|
||||
ctxt.loader.SymSect(si.secSym()) != sect {
|
||||
panic("inconsistency between dwarfp and Segdwarf")
|
||||
}
|
||||
machorelocsect(ctxt, sect, si.syms)
|
||||
machorelocsect(ctxt, ldr, sect, si.syms)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -319,18 +319,21 @@ func Main(arch *sys.Arch, theArch Arch) {
|
||||
ctxt.loader.InitOutData()
|
||||
thearch.Asmb(ctxt, ctxt.loader)
|
||||
newreloc := ctxt.Is386() || ctxt.IsAMD64() || ctxt.IsARM() || ctxt.IsARM64() || ctxt.IsMIPS() || ctxt.IsMIPS64() || ctxt.IsRISCV64() || ctxt.IsS390X() || ctxt.IsWasm()
|
||||
newasmb2 := ctxt.IsDarwin()
|
||||
if newreloc {
|
||||
bench.Start("reloc")
|
||||
ctxt.reloc()
|
||||
bench.Start("loadlibfull")
|
||||
// We don't need relocations at this point.
|
||||
// An exception is internal linking on Windows, see pe.go:addPEBaseRelocSym
|
||||
// Wasm is another exception, where it applies text relocations in Asmb2.
|
||||
needReloc := (ctxt.IsWindows() && ctxt.IsInternal()) || ctxt.IsWasm()
|
||||
// On AMD64 ELF, we directly use the loader's ExtRelocs, so we don't
|
||||
// need conversion. Otherwise we do.
|
||||
needExtReloc := ctxt.IsExternal() && !(ctxt.IsAMD64() && ctxt.IsELF)
|
||||
ctxt.loadlibfull(symGroupType, needReloc, needExtReloc) // XXX do it here for now
|
||||
if !newasmb2 {
|
||||
bench.Start("loadlibfull")
|
||||
// We don't need relocations at this point.
|
||||
// An exception is internal linking on Windows, see pe.go:addPEBaseRelocSym
|
||||
// Wasm is another exception, where it applies text relocations in Asmb2.
|
||||
needReloc := (ctxt.IsWindows() && ctxt.IsInternal()) || ctxt.IsWasm()
|
||||
// On AMD64 ELF, we directly use the loader's ExtRelocs, so we don't
|
||||
// need conversion. Otherwise we do.
|
||||
needExtReloc := ctxt.IsExternal() && !(ctxt.IsAMD64() && ctxt.IsELF)
|
||||
ctxt.loadlibfull(symGroupType, needReloc, needExtReloc) // XXX do it here for now
|
||||
}
|
||||
} else {
|
||||
bench.Start("loadlibfull")
|
||||
ctxt.loadlibfull(symGroupType, true, false) // XXX do it here for now
|
||||
|
||||
@ -80,7 +80,7 @@ func elfsetupplt(ctxt *ld.Link, plt, gotplt *loader.SymbolBuilder, dynamic loade
|
||||
return
|
||||
}
|
||||
|
||||
func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
|
||||
func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
|
||||
@ -97,7 +97,7 @@ func elfsetupplt(ctxt *ld.Link, plt, gotplt *loader.SymbolBuilder, dynamic loade
|
||||
return
|
||||
}
|
||||
|
||||
func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
|
||||
func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
|
||||
@ -528,7 +528,7 @@ func elfsetupplt(ctxt *ld.Link, plt, got *loader.SymbolBuilder, dynamic loader.S
|
||||
}
|
||||
}
|
||||
|
||||
func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
|
||||
func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
|
||||
@ -37,7 +37,7 @@ func elfsetupplt(ctxt *ld.Link, plt, gotplt *loader.SymbolBuilder, dynamic loade
|
||||
log.Fatalf("elfsetuplt")
|
||||
}
|
||||
|
||||
func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
|
||||
func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool {
|
||||
log.Fatalf("machoreloc1 not implemented")
|
||||
return false
|
||||
}
|
||||
|
||||
@ -363,7 +363,7 @@ func elfsetupplt(ctxt *ld.Link, plt, got *loader.SymbolBuilder, dynamic loader.S
|
||||
}
|
||||
}
|
||||
|
||||
func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
|
||||
func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
|
||||
@ -398,7 +398,7 @@ func elfreloc1(ctxt *ld.Link, r *sym.Reloc, sectoff int64) bool {
|
||||
return true
|
||||
}
|
||||
|
||||
func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
|
||||
func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtRelocView, int64) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user