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runtime,cmd/ld: on darwin, create theads using libc

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Replace thread creation with calls to the pthread
library in libc.

Update #17490

Change-Id: I1e19965c45255deb849b059231252fc6a7861d6c
Reviewed-on: https://go-review.googlesource.com/108679
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Keith Randall 2018-04-23 07:30:32 -07:00
parent 743fd9171f
commit b7f1777a70
26 changed files with 1008 additions and 210 deletions
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22
src/cmd/link/internal/ld/data.go
View file

@ -159,8 +159,8 @@ func relocsym(ctxt *Link, s *sym.Symbol) {
}
// We need to be able to reference dynimport symbols when linking against
// shared libraries, and Solaris needs it always
if ctxt.HeadType != objabi.Hsolaris && r.Sym != nil && r.Sym.Type == sym.SDYNIMPORT && !ctxt.DynlinkingGo() && !r.Sym.Attr.SubSymbol() {
// shared libraries, and Solaris and Darwin need it always
if ctxt.HeadType != objabi.Hsolaris && ctxt.HeadType != objabi.Hdarwin && r.Sym != nil && r.Sym.Type == sym.SDYNIMPORT && !ctxt.DynlinkingGo() && !r.Sym.Attr.SubSymbol() {
if !(ctxt.Arch.Family == sys.PPC64 && ctxt.LinkMode == LinkExternal && r.Sym.Name == ".TOC.") {
Errorf(s, "unhandled relocation for %s (type %d (%s) rtype %d (%s))", r.Sym.Name, r.Sym.Type, r.Sym.Type, r.Type, sym.RelocName(ctxt.Arch, r.Type))
}
@ -402,10 +402,22 @@ func relocsym(ctxt *Link, s *sym.Symbol) {
}
} else if ctxt.HeadType == objabi.Hdarwin {
if r.Type == objabi.R_CALL {
if rs.Type != sym.SHOSTOBJ {
o += int64(uint64(Symaddr(rs)) - rs.Sect.Vaddr)
if ctxt.LinkMode == LinkExternal && rs.Type == sym.SDYNIMPORT {
switch ctxt.Arch.Family {
case sys.AMD64:
// AMD64 dynamic relocations are relative to the end of the relocation.
o += int64(r.Siz)
case sys.I386:
// I386 dynamic relocations are relative to the start of the section.
o -= int64(r.Off) // offset in symbol
o -= int64(s.Value - int64(s.Sect.Vaddr)) // offset of symbol in section
}
} else {
if rs.Type != sym.SHOSTOBJ {
o += int64(uint64(Symaddr(rs)) - rs.Sect.Vaddr)
}
o -= int64(r.Off) // relative to section offset, not symbol
}
o -= int64(r.Off) // relative to section offset, not symbol
} else if ctxt.Arch.Family == sys.ARM {
// see ../arm/asm.go:/machoreloc1
o += Symaddr(rs) - s.Value - int64(r.Off)