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Add a getSymbolOffset method and use it in the ELF writer.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120977 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2010-12-06 02:57:26 +00:00
parent cc10244d77
commit ffd902bfb7
3 changed files with 17 additions and 15 deletions
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4
include/llvm/MC/MCAsmLayout.h
View File

@ -133,6 +133,10 @@ public:
/// layout.
uint64_t getSymbolAddress(const MCSymbolData *SD) const;
/// \brief Get the offset of the given symbol, as computed in the current
/// layout.
uint64_t getSymbolOffset(const MCSymbolData *SD) const;
/// @}
};

23
lib/MC/ELFObjectWriter.cpp
View File

@ -557,9 +557,8 @@ static uint64_t SymbolValue(MCSymbolData &Data, const MCAsmLayout &Layout) {
if (!Symbol.isInSection())
return 0;
if (MCFragment *FF = Data.getFragment())
return Layout.getSymbolAddress(&Data) -
Layout.getSectionAddress(FF->getParent());
if (Data.getFragment())
return Layout.getSymbolOffset(&Data);
return 0;
}
@ -1523,10 +1522,9 @@ void ARMELFObjectWriter::RecordRelocation(const MCAssembler &Asm,
const MCSymbol &SymbolB = RefB->getSymbol();
MCSymbolData &SDB = Asm.getSymbolData(SymbolB);
IsPCRel = true;
MCSectionData *Sec = Fragment->getParent();
// Offset of the symbol in the section
int64_t a = Layout.getSymbolAddress(&SDB) - Layout.getSectionAddress(Sec);
int64_t a = Layout.getSymbolOffset(&SDB);
// Ofeset of the relocation in the section
int64_t b = Layout.getFragmentOffset(Fragment) + Fixup.getOffset();
@ -1539,9 +1537,8 @@ void ARMELFObjectWriter::RecordRelocation(const MCAssembler &Asm,
Index = F->getParent()->getOrdinal() + 1;
MCSectionData *FSD = F->getParent();
// Offset of the symbol in the section
Value += Layout.getSymbolAddress(&SD) - Layout.getSectionAddress(FSD);
Value += Layout.getSymbolOffset(&SD);
} else {
if (Asm.getSymbolData(Symbol).getFlags() & ELF_Other_Weakref)
WeakrefUsedInReloc.insert(RelocSymbol);
@ -1601,10 +1598,9 @@ void MBlazeELFObjectWriter::RecordRelocation(const MCAssembler &Asm,
const MCSymbol &SymbolB = RefB->getSymbol();
MCSymbolData &SDB = Asm.getSymbolData(SymbolB);
IsPCRel = true;
MCSectionData *Sec = Fragment->getParent();
// Offset of the symbol in the section
int64_t a = Layout.getSymbolAddress(&SDB) - Layout.getSectionAddress(Sec);
int64_t a = Layout.getSymbolOffset(&SDB);
// Ofeset of the relocation in the section
int64_t b = Layout.getFragmentOffset(Fragment) + Fixup.getOffset();
@ -1617,9 +1613,8 @@ void MBlazeELFObjectWriter::RecordRelocation(const MCAssembler &Asm,
Index = F->getParent()->getOrdinal();
MCSectionData *FSD = F->getParent();
// Offset of the symbol in the section
Value += Layout.getSymbolAddress(&SD) - Layout.getSectionAddress(FSD);
Value += Layout.getSymbolOffset(&SD);
} else {
if (Asm.getSymbolData(Symbol).getFlags() & ELF_Other_Weakref)
WeakrefUsedInReloc.insert(RelocSymbol);
@ -1705,10 +1700,9 @@ void X86ELFObjectWriter::RecordRelocation(const MCAssembler &Asm,
const MCSymbol &SymbolB = RefB->getSymbol();
MCSymbolData &SDB = Asm.getSymbolData(SymbolB);
IsPCRel = true;
MCSectionData *Sec = Fragment->getParent();
// Offset of the symbol in the section
int64_t a = Layout.getSymbolAddress(&SDB) - Layout.getSectionAddress(Sec);
int64_t a = Layout.getSymbolOffset(&SDB);
// Ofeset of the relocation in the section
int64_t b = Layout.getFragmentOffset(Fragment) + Fixup.getOffset();
@ -1721,9 +1715,8 @@ void X86ELFObjectWriter::RecordRelocation(const MCAssembler &Asm,
Index = F->getParent()->getOrdinal() + 1;
MCSectionData *FSD = F->getParent();
// Offset of the symbol in the section
Value += Layout.getSymbolAddress(&SD) - Layout.getSectionAddress(FSD);
Value += Layout.getSymbolOffset(&SD);
} else {
if (Asm.getSymbolData(Symbol).getFlags() & ELF_Other_Weakref)
WeakrefUsedInReloc.insert(RelocSymbol);

5
lib/MC/MCAssembler.cpp
View File

@ -154,6 +154,11 @@ uint64_t MCAsmLayout::getFragmentOffset(const MCFragment *F) const {
return F->Offset;
}
uint64_t MCAsmLayout::getSymbolOffset(const MCSymbolData *SD) const {
assert(SD->getFragment() && "Invalid getOffset() on undefined symbol!");
return getFragmentOffset(SD->getFragment()) + SD->getOffset();
}
uint64_t MCAsmLayout::getSymbolAddress(const MCSymbolData *SD) const {
assert(SD->getFragment() && "Invalid getAddress() on undefined symbol!");
return getFragmentAddress(SD->getFragment()) + SD->getOffset();