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Refactor alias handling to AliasedSymbol.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116600 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2010-10-15 18:25:33 +00:00
parent b269ff7267
commit de89b010b0
1 changed files with 15 additions and 13 deletions
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28
lib/MC/ELFObjectWriter.cpp
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@ -435,17 +435,22 @@ static uint64_t SymbolValue(MCSymbolData &Data, const MCAsmLayout &Layout) {
return 0;
}
static const MCSymbol &AliasedSymbol(const MCSymbol &Symbol) {
const MCSymbol *S = &Symbol;
while (S->isVariable()) {
const MCExpr *Value = S->getVariableValue();
assert (Value->getKind() == MCExpr::SymbolRef && "Unimplemented");
const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value);
S = &Ref->getSymbol();
}
return *S;
}
void ELFObjectWriterImpl::WriteSymbol(MCDataFragment *F, ELFSymbolData &MSD,
const MCAsmLayout &Layout) {
MCSymbolData &OrigData = *MSD.SymbolData;
MCSymbolData *AliasData = NULL;
if (OrigData.Symbol->isVariable()) {
const MCExpr *Value = OrigData.getSymbol().getVariableValue();
assert (Value->getKind() == MCExpr::SymbolRef && "Unimplemented");
const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value);
AliasData = &Layout.getAssembler().getSymbolData(Ref->getSymbol());
}
MCSymbolData &Data = AliasData ? *AliasData : OrigData;
MCSymbolData &Data =
Layout.getAssembler().getSymbolData(AliasedSymbol(OrigData.getSymbol()));
uint8_t Binding = GetBinding(OrigData);
uint8_t Visibility = GetVisibility(OrigData);
@ -592,7 +597,7 @@ void ELFObjectWriterImpl::RecordRelocation(const MCAssembler &Asm,
bool IsPCRel = isFixupKindX86PCRel(Fixup.getKind());
if (!Target.isAbsolute()) {
Symbol = &Target.getSymA()->getSymbol();
Symbol = &AliasedSymbol(Target.getSymA()->getSymbol());
MCSymbolData &SD = Asm.getSymbolData(*Symbol);
MCFragment *F = SD.getFragment();
@ -802,10 +807,7 @@ void ELFObjectWriterImpl::ComputeSymbolTable(MCAssembler &Asm) {
MSD.SectionIndex = ELF::SHN_ABS;
Add = true;
} else if (Symbol.isVariable()) {
const MCExpr *Value = Symbol.getVariableValue();
assert (Value->getKind() == MCExpr::SymbolRef && "Unimplemented");
const MCSymbolRefExpr *Ref = static_cast<const MCSymbolRefExpr*>(Value);
const MCSymbol &RefSymbol = Ref->getSymbol();
const MCSymbol &RefSymbol = AliasedSymbol(Symbol);
if (RefSymbol.isDefined()) {
MSD.SectionIndex = SectionIndexMap.lookup(&RefSymbol.getSection());
assert(MSD.SectionIndex && "Invalid section index!");