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[dev.link] cmd/link: add loader.Sym equivalents to ArchSyms

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Populate ArchSyms with loader.Sym versions of important symbols,
so as to be able to convert the code that uses ArchSyms to the
new loader interfaces.

Change-Id: If6766f7164642a9dc2e31fcf7f9280a6e95e5d23
Reviewed-on: https://go-review.googlesource.com/c/go/+/224383
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Than McIntosh 2020-03-18 13:26:38 -04:00
parent e14efb6865
commit dd66786029
1 changed files with 32 additions and 8 deletions
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40
src/cmd/link/internal/ld/lib.go
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@ -123,27 +123,51 @@ type ArchSyms struct {
// Darwin symbols
LinkEditGOT *sym.Symbol
LinkEditPLT *sym.Symbol
// ----- loader.Sym equivalents -----
TOC2 loader.Sym
DotTOC2 []loader.Sym // for each version
GOT2 loader.Sym
PLT2 loader.Sym
GOTPLT2 loader.Sym
Tlsg2 loader.Sym
Dynamic2 loader.Sym
DynSym2 loader.Sym
DynStr2 loader.Sym
}
// setArchSyms sets up the ArchSyms structure, and must be called before
// relocations are applied.
func (ctxt *Link) setArchSyms() {
ctxt.GOT = ctxt.Syms.Lookup(".got", 0)
ctxt.PLT = ctxt.Syms.Lookup(".plt", 0)
ctxt.GOTPLT = ctxt.Syms.Lookup(".got.plt", 0)
ctxt.GOT2 = ctxt.loader.LookupOrCreateSym(".got", 0)
ctxt.GOT = ctxt.loader.Syms[ctxt.GOT2]
ctxt.PLT2 = ctxt.loader.LookupOrCreateSym(".plt", 0)
ctxt.PLT = ctxt.loader.Syms[ctxt.PLT2]
ctxt.GOTPLT2 = ctxt.loader.LookupOrCreateSym(".got.plt", 0)
ctxt.GOTPLT = ctxt.loader.Syms[ctxt.GOTPLT2]
ctxt.Dynamic = ctxt.Syms.Lookup(".dynamic", 0)
ctxt.DynSym = ctxt.Syms.Lookup(".dynsym", 0)
ctxt.DynStr = ctxt.Syms.Lookup(".dynstr", 0)
ctxt.Dynamic2 = ctxt.loader.LookupOrCreateSym(".dynamic", 0)
ctxt.Dynamic = ctxt.loader.Syms[ctxt.Dynamic2]
ctxt.DynSym2 = ctxt.loader.LookupOrCreateSym(".dynsym", 0)
ctxt.DynSym = ctxt.loader.Syms[ctxt.DynSym2]
ctxt.DynStr2 = ctxt.loader.LookupOrCreateSym(".dynstr", 0)
ctxt.DynStr = ctxt.loader.Syms[ctxt.DynStr2]
if ctxt.IsAIX() {
ctxt.TOC = ctxt.Syms.Lookup("TOC", 0)
ctxt.TOC2 = ctxt.loader.LookupOrCreateSym("TOC", 0)
ctxt.TOC = ctxt.loader.Syms[ctxt.TOC2]
ctxt.DotTOC = make([]*sym.Symbol, ctxt.Syms.MaxVersion()+1)
ctxt.DotTOC2 = make([]loader.Sym, ctxt.Syms.MaxVersion()+1)
for i := 0; i <= ctxt.Syms.MaxVersion(); i++ {
if i >= 2 && i < sym.SymVerStatic { // these versions are not used currently
continue
}
ctxt.DotTOC[i] = ctxt.Syms.Lookup(".TOC.", i)
ctxt.DotTOC2[i] = ctxt.loader.LookupOrCreateSym(".TOC.", i)
ctxt.DotTOC[i] = ctxt.loader.Syms[ctxt.DotTOC2[i]]
}
}
if ctxt.IsElf() {