diff options
Diffstat (limited to 'lib/MC/ELFObjectWriter.cpp')
-rw-r--r-- | lib/MC/ELFObjectWriter.cpp | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp index ac8c250a83..fb0518b2ec 100644 --- a/lib/MC/ELFObjectWriter.cpp +++ b/lib/MC/ELFObjectWriter.cpp @@ -58,6 +58,14 @@ static void SetBinding(MCSymbolData &SD, unsigned Binding) { SD.setFlags(OtherFlags | (Binding << ELF_STB_Shift)); } +static unsigned GetVisibility(MCSymbolData &SD) { + unsigned Visibility = + (SD.getFlags() & (0xf << ELF_STV_Shift)) >> ELF_STV_Shift; + assert(Visibility == ELF::STV_DEFAULT || Visibility == ELF::STV_INTERNAL || + Visibility == ELF::STV_HIDDEN || Visibility == ELF::STV_PROTECTED); + return Visibility; +} + static bool isFixupKindX86PCRel(unsigned Kind) { switch (Kind) { default: @@ -429,9 +437,23 @@ static uint64_t SymbolValue(MCSymbolData &Data, const MCAsmLayout &Layout) { void ELFObjectWriterImpl::WriteSymbol(MCDataFragment *F, ELFSymbolData &MSD, const MCAsmLayout &Layout) { - MCSymbolData &Data = *MSD.SymbolData; - uint8_t Info = (Data.getFlags() & 0xff); - uint8_t Other = ((Data.getFlags() & 0xf00) >> ELF_STV_Shift); + 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; + + uint8_t Binding = GetBinding(OrigData); + uint8_t Visibility = GetVisibility(OrigData); + uint8_t Type = GetType(Data); + + uint8_t Info = (Binding << ELF_STB_Shift) | (Type << ELF_STT_Shift); + uint8_t Other = Visibility; + uint64_t Value = SymbolValue(Data, Layout); uint64_t Size = 0; const MCExpr *ESize; |