diff options
Diffstat (limited to 'src/cmd/link/internal/ld/data.go')
| -rw-r--r-- | src/cmd/link/internal/ld/data.go | 49 |
1 files changed, 38 insertions, 11 deletions
diff --git a/src/cmd/link/internal/ld/data.go b/src/cmd/link/internal/ld/data.go index 8324a98a26..00130044ab 100644 --- a/src/cmd/link/internal/ld/data.go +++ b/src/cmd/link/internal/ld/data.go @@ -390,6 +390,12 @@ func (st *relocSymState) relocsym(s loader.Sym, P []byte) { o = ldr.SymValue(rs) + r.Add() - int64(ldr.SymSect(rs).Vaddr) case objabi.R_WEAKADDROFF, objabi.R_METHODOFF: if !ldr.AttrReachable(rs) { + if rt == objabi.R_METHODOFF { + // Set it to a sentinel value. The runtime knows this is not pointing to + // anything valid. + o = -1 + break + } continue } fallthrough @@ -698,6 +704,9 @@ func windynrelocsym(ctxt *Link, rel *loader.SymbolBuilder, s loader.Sym) { relocs := ctxt.loader.Relocs(s) for ri := 0; ri < relocs.Count(); ri++ { r := relocs.At(ri) + if r.IsMarker() { + continue // skip marker relocations + } targ := r.Sym() if targ == 0 { continue @@ -775,6 +784,9 @@ func dynrelocsym(ctxt *Link, s loader.Sym) { relocs := ldr.Relocs(s) for ri := 0; ri < relocs.Count(); ri++ { r := relocs.At(ri) + if r.IsMarker() { + continue // skip marker relocations + } if ctxt.BuildMode == BuildModePIE && ctxt.LinkMode == LinkInternal { // It's expected that some relocations will be done // later by relocsym (R_TLS_LE, R_ADDROFF), so @@ -930,7 +942,7 @@ func writeBlock(ctxt *Link, out *OutBuf, ldr *loader.Loader, syms []loader.Sym, break } if val < addr { - ldr.Errorf(s, "phase error: addr=%#x but sym=%#x type=%d", addr, val, ldr.SymType(s)) + ldr.Errorf(s, "phase error: addr=%#x but sym=%#x type=%v sect=%v", addr, val, ldr.SymType(s), ldr.SymSect(s).Name) errorexit() } if addr < val { @@ -939,6 +951,9 @@ func writeBlock(ctxt *Link, out *OutBuf, ldr *loader.Loader, syms []loader.Sym, } P := out.WriteSym(ldr, s) st.relocsym(s, P) + if f, ok := ctxt.generatorSyms[s]; ok { + f(ctxt, s) + } addr += int64(len(P)) siz := ldr.SymSize(s) if addr < val+siz { @@ -1308,9 +1323,9 @@ func (state *dodataState) makeRelroForSharedLib(target *Link) { // relro Type before it reaches here. isRelro = true case sym.SFUNCTAB: - if target.IsAIX() && ldr.SymName(s) == "runtime.etypes" { + if ldr.SymName(s) == "runtime.etypes" { // runtime.etypes must be at the end of - // the relro datas. + // the relro data. isRelro = true } } @@ -1706,7 +1721,7 @@ func (state *dodataState) allocateDataSections(ctxt *Link) { ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.ebss", 0), sect) bssGcEnd := state.datsize - int64(sect.Vaddr) - // Emit gcdata for bcc symbols now that symbol values have been assigned. + // Emit gcdata for bss symbols now that symbol values have been assigned. gcsToEmit := []struct { symName string symKind sym.SymKind @@ -1826,13 +1841,16 @@ func (state *dodataState) allocateDataSections(ctxt *Link) { const fallbackPerm = 04 relroSecPerm := fallbackPerm genrelrosecname := func(suffix string) string { + if suffix == "" { + return ".rodata" + } return suffix } seg := segro if ctxt.UseRelro() { segrelro := &Segrelrodata - if ctxt.LinkMode == LinkExternal && ctxt.HeadType != objabi.Haix { + if ctxt.LinkMode == LinkExternal && !ctxt.IsAIX() && !ctxt.IsDarwin() { // Using a separate segment with an external // linker results in some programs moving // their data sections unexpectedly, which @@ -1845,9 +1863,12 @@ func (state *dodataState) allocateDataSections(ctxt *Link) { state.datsize = 0 } - genrelrosecname = func(suffix string) string { - return ".data.rel.ro" + suffix + if !ctxt.IsDarwin() { // We don't need the special names on darwin. + genrelrosecname = func(suffix string) string { + return ".data.rel.ro" + suffix + } } + relroReadOnly := []sym.SymKind{} for _, symnro := range sym.ReadOnly { symn := sym.RelROMap[symnro] @@ -1923,7 +1944,10 @@ func (state *dodataState) allocateDataSections(ctxt *Link) { ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.pclntab", 0), sect) ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.pcheader", 0), sect) ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.funcnametab", 0), sect) - ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.pclntab_old", 0), sect) + ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.cutab", 0), sect) + ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.filetab", 0), sect) + ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.pctab", 0), sect) + ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.functab", 0), sect) ldr.SetSymSect(ldr.LookupOrCreateSym("runtime.epclntab", 0), sect) if ctxt.HeadType == objabi.Haix { xcoffUpdateOuterSize(ctxt, int64(sect.Length), sym.SPCLNTAB) @@ -2167,7 +2191,7 @@ func (ctxt *Link) textaddress() { ctxt.Textp[0] = text } - va := uint64(*FlagTextAddr) + va := uint64(Rnd(*FlagTextAddr, int64(Funcalign))) n := 1 sect.Vaddr = va ntramps := 0 @@ -2193,7 +2217,7 @@ func (ctxt *Link) textaddress() { // Set the address of the start/end symbols, if not already // (i.e. not darwin+dynlink or AIX+external, see above). ldr.SetSymValue(etext, int64(va)) - ldr.SetSymValue(text, *FlagTextAddr) + ldr.SetSymValue(text, int64(Segtext.Sections[0].Vaddr)) } // merge tramps into Textp, keeping Textp in address order @@ -2507,7 +2531,10 @@ func (ctxt *Link) address() []*sym.Segment { ctxt.xdefine("runtime.pclntab", sym.SRODATA, int64(pclntab.Vaddr)) ctxt.defineInternal("runtime.pcheader", sym.SRODATA) ctxt.defineInternal("runtime.funcnametab", sym.SRODATA) - ctxt.defineInternal("runtime.pclntab_old", sym.SRODATA) + ctxt.defineInternal("runtime.cutab", sym.SRODATA) + ctxt.defineInternal("runtime.filetab", sym.SRODATA) + ctxt.defineInternal("runtime.pctab", sym.SRODATA) + ctxt.defineInternal("runtime.functab", sym.SRODATA) ctxt.xdefine("runtime.epclntab", sym.SRODATA, int64(pclntab.Vaddr+pclntab.Length)) ctxt.xdefine("runtime.noptrdata", sym.SNOPTRDATA, int64(noptr.Vaddr)) ctxt.xdefine("runtime.enoptrdata", sym.SNOPTRDATA, int64(noptr.Vaddr+noptr.Length)) |