RIT_Pair = 1,
RIT_Difference = 2,
RIT_PreboundLazyPointer = 3,
- RIT_LocalDifference = 4
+ RIT_LocalDifference = 4,
+ RIT_TLV = 5
};
/// X86_64 uses its own relocation types.
RIT_X86_64_Subtractor = 5,
RIT_X86_64_Signed1 = 6,
RIT_X86_64_Signed2 = 7,
- RIT_X86_64_Signed4 = 8
+ RIT_X86_64_Signed4 = 8,
+ RIT_X86_64_TLV = 9
};
/// MachSymbolData - Helper struct for containing some precomputed information
void RecordX86_64Relocation(const MCAssembler &Asm, const MCAsmLayout &Layout,
const MCFragment *Fragment,
- const MCAsmFixup &Fixup, MCValue Target,
+ const MCFixup &Fixup, MCValue Target,
uint64_t &FixedValue) {
- unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
- unsigned IsRIPRel = isFixupKindRIPRel(Fixup.Kind);
- unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
+ unsigned IsPCRel = isFixupKindPCRel(Fixup.getKind());
+ unsigned IsRIPRel = isFixupKindRIPRel(Fixup.getKind());
+ unsigned Log2Size = getFixupKindLog2Size(Fixup.getKind());
// See <reloc.h>.
- uint32_t FixupOffset = Layout.getFragmentOffset(Fragment) + Fixup.Offset;
- uint32_t FixupAddress = Layout.getFragmentAddress(Fragment) + Fixup.Offset;
+ uint32_t FixupOffset =
+ Layout.getFragmentOffset(Fragment) + Fixup.getOffset();
+ uint32_t FixupAddress =
+ Layout.getFragmentAddress(Fragment) + Fixup.getOffset();
int64_t Value = 0;
unsigned Index = 0;
unsigned IsExtern = 0;
// x86_64 distinguishes movq foo@GOTPCREL so that the linker can
// rewrite the movq to an leaq at link time if the symbol ends up in
// the same linkage unit.
- if (unsigned(Fixup.Kind) == X86::reloc_riprel_4byte_movq_load)
+ if (unsigned(Fixup.getKind()) == X86::reloc_riprel_4byte_movq_load)
Type = RIT_X86_64_GOTLoad;
else
Type = RIT_X86_64_GOT;
- } else if (Modifier != MCSymbolRefExpr::VK_None) {
+ } else if (Modifier == MCSymbolRefExpr::VK_TLVP) {
+ Type = RIT_X86_64_TLV;
+ } else if (Modifier != MCSymbolRefExpr::VK_None) {
report_fatal_error("unsupported symbol modifier in relocation");
} else {
Type = RIT_X86_64_Signed;
// required to include any necessary offset directly.
Type = RIT_X86_64_GOT;
IsPCRel = 1;
+ } else if (Modifier == MCSymbolRefExpr::VK_TLVP) {
+ report_fatal_error("TLVP symbol modifier should have been rip-rel");
} else if (Modifier != MCSymbolRefExpr::VK_None)
report_fatal_error("unsupported symbol modifier in relocation");
else
void RecordScatteredRelocation(const MCAssembler &Asm,
const MCAsmLayout &Layout,
const MCFragment *Fragment,
- const MCAsmFixup &Fixup, MCValue Target,
+ const MCFixup &Fixup, MCValue Target,
uint64_t &FixedValue) {
- uint32_t FixupOffset = Layout.getFragmentOffset(Fragment) + Fixup.Offset;
- unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
- unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
+ uint32_t FixupOffset = Layout.getFragmentOffset(Fragment)+Fixup.getOffset();
+ unsigned IsPCRel = isFixupKindPCRel(Fixup.getKind());
+ unsigned Log2Size = getFixupKindLog2Size(Fixup.getKind());
unsigned Type = RIT_Vanilla;
// See <reloc.h>.
Relocations[Fragment->getParent()].push_back(MRE);
}
+ void RecordTLVPRelocation(const MCAssembler &Asm,
+ const MCAsmLayout &Layout,
+ const MCFragment *Fragment,
+ const MCFixup &Fixup, MCValue Target,
+ uint64_t &FixedValue) {
+ assert(Target.getSymA()->getKind() == MCSymbolRefExpr::VK_TLVP &&
+ !Is64Bit &&
+ "Should only be called with a 32-bit TLVP relocation!");
+
+ unsigned Log2Size = getFixupKindLog2Size(Fixup.getKind());
+ uint32_t Value = Layout.getFragmentOffset(Fragment)+Fixup.getOffset();
+ unsigned IsPCRel = 0;
+
+ // Get the symbol data.
+ MCSymbolData *SD_A = &Asm.getSymbolData(Target.getSymA()->getSymbol());
+ unsigned Index = SD_A->getIndex();
+
+ // We're only going to have a second symbol in pic mode and it'll be a
+ // subtraction from the picbase. For 32-bit pic the addend is the difference
+ // between the picbase and the next address. For 32-bit static the addend
+ // is zero.
+ if (Target.getSymB()) {
+ // If this is a subtraction then we're pcrel.
+ uint32_t FixupAddress =
+ Layout.getFragmentAddress(Fragment) + Fixup.getOffset();
+ MCSymbolData *SD_B = &Asm.getSymbolData(Target.getSymB()->getSymbol());
+ IsPCRel = 1;
+ FixedValue = (FixupAddress - Layout.getSymbolAddress(SD_B) +
+ Target.getConstant());
+ FixedValue += 1 << Log2Size;
+ } else {
+ FixedValue = 0;
+ }
+
+ // struct relocation_info (8 bytes)
+ MachRelocationEntry MRE;
+ MRE.Word0 = Value;
+ MRE.Word1 = ((Index << 0) |
+ (IsPCRel << 24) |
+ (Log2Size << 25) |
+ (1 << 27) | // Extern
+ (RIT_TLV << 28)); // Type
+ Relocations[Fragment->getParent()].push_back(MRE);
+ }
+
void RecordRelocation(const MCAssembler &Asm, const MCAsmLayout &Layout,
- const MCFragment *Fragment, const MCAsmFixup &Fixup,
+ const MCFragment *Fragment, const MCFixup &Fixup,
MCValue Target, uint64_t &FixedValue) {
if (Is64Bit) {
RecordX86_64Relocation(Asm, Layout, Fragment, Fixup, Target, FixedValue);
return;
}
- unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
- unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
+ unsigned IsPCRel = isFixupKindPCRel(Fixup.getKind());
+ unsigned Log2Size = getFixupKindLog2Size(Fixup.getKind());
+ // If this is a 32-bit TLVP reloc it's handled a bit differently.
+ if (Target.getSymA()->getKind() == MCSymbolRefExpr::VK_TLVP) {
+ RecordTLVPRelocation(Asm, Layout, Fragment, Fixup, Target, FixedValue);
+ return;
+ }
+
// If this is a difference or a defined symbol plus an offset, then we need
// a scattered relocation entry.
// Differences always require scattered relocations.
Target, FixedValue);
// See <reloc.h>.
- uint32_t FixupOffset = Layout.getFragmentOffset(Fragment) + Fixup.Offset;
- uint32_t Value = 0;
+ uint32_t FixupOffset = Layout.getFragmentOffset(Fragment)+Fixup.getOffset();
unsigned Index = 0;
unsigned IsExtern = 0;
unsigned Type = 0;
// FIXME: Currently, these are never generated (see code below). I cannot
// find a case where they are actually emitted.
Type = RIT_Vanilla;
- Value = 0;
} else {
// Check whether we need an external or internal relocation.
if (doesSymbolRequireExternRelocation(SD)) {
// undefined. This occurs with weak definitions, for example.
if (!SD->Symbol->isUndefined())
FixedValue -= Layout.getSymbolAddress(SD);
- Value = 0;
} else {
// The index is the section ordinal (1-based).
Index = SD->getFragment()->getParent()->getOrdinal() + 1;
- Value = Layout.getSymbolAddress(SD);
}
Type = RIT_Vanilla;
const MCSymbol &Symbol = it->getSymbol();
// Ignore non-linker visible symbols.
- if (!Asm.isSymbolLinkerVisible(it))
+ if (!Asm.isSymbolLinkerVisible(it->getSymbol()))
continue;
if (!it->isExternal() && !Symbol.isUndefined())
const MCSymbol &Symbol = it->getSymbol();
// Ignore non-linker visible symbols.
- if (!Asm.isSymbolLinkerVisible(it))
+ if (!Asm.isSymbolLinkerVisible(it->getSymbol()))
continue;
if (it->isExternal() || Symbol.isUndefined())
void MachObjectWriter::RecordRelocation(const MCAssembler &Asm,
const MCAsmLayout &Layout,
const MCFragment *Fragment,
- const MCAsmFixup &Fixup, MCValue Target,
+ const MCFixup &Fixup, MCValue Target,
uint64_t &FixedValue) {
((MachObjectWriterImpl*) Impl)->RecordRelocation(Asm, Layout, Fragment, Fixup,
Target, FixedValue);
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