#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCMachOSymbolFlags.h"
#include "llvm/MC/MCMachObjectWriter.h"
+#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MachO.h"
bool requiresExternRelocation(MachObjectWriter *Writer,
const MCAssembler &Asm,
- const MCFragment &Fragment,
- unsigned RelocType, const MCSymbolData *SD,
- uint64_t FixedValue);
+ const MCFragment &Fragment, unsigned RelocType,
+ const MCSymbol &S, uint64_t FixedValue);
public:
ARMMachObjectWriter(bool Is64Bit, uint32_t CPUType,
// See <reloc.h>.
const MCSymbol *A = &Target.getSymA()->getSymbol();
- const MCSymbolData *A_SD = &Asm.getSymbolData(*A);
- if (!A_SD->getFragment())
+ if (!A->getFragment())
Asm.getContext().reportFatalError(Fixup.getLoc(),
"symbol '" + A->getName() +
"' can not be undefined in a subtraction expression");
- uint32_t Value = Writer->getSymbolAddress(A_SD, Layout);
+ uint32_t Value = Writer->getSymbolAddress(*A, Layout);
uint32_t Value2 = 0;
- uint64_t SecAddr =
- Writer->getSectionAddress(A_SD->getFragment()->getParent());
+ uint64_t SecAddr = Writer->getSectionAddress(A->getFragment()->getParent());
FixedValue += SecAddr;
if (const MCSymbolRefExpr *B = Target.getSymB()) {
- const MCSymbolData *B_SD = &Asm.getSymbolData(B->getSymbol());
+ const MCSymbol *SB = &B->getSymbol();
- if (!B_SD->getFragment())
+ if (!SB->getFragment())
Asm.getContext().reportFatalError(Fixup.getLoc(),
"symbol '" + B->getSymbol().getName() +
"' can not be undefined in a subtraction expression");
// Select the appropriate difference relocation type.
Type = MachO::ARM_RELOC_HALF_SECTDIFF;
- Value2 = Writer->getSymbolAddress(B_SD, Layout);
- FixedValue -= Writer->getSectionAddress(B_SD->getFragment()->getParent());
+ Value2 = Writer->getSymbolAddress(B->getSymbol(), Layout);
+ FixedValue -= Writer->getSectionAddress(SB->getFragment()->getParent());
}
// Relocations are written out in reverse order, so the PAIR comes first.
// See <reloc.h>.
const MCSymbol *A = &Target.getSymA()->getSymbol();
- const MCSymbolData *A_SD = &Asm.getSymbolData(*A);
- if (!A_SD->getFragment())
+ if (!A->getFragment())
Asm.getContext().reportFatalError(Fixup.getLoc(),
"symbol '" + A->getName() +
"' can not be undefined in a subtraction expression");
- uint32_t Value = Writer->getSymbolAddress(A_SD, Layout);
- uint64_t SecAddr = Writer->getSectionAddress(A_SD->getFragment()->getParent());
+ uint32_t Value = Writer->getSymbolAddress(*A, Layout);
+ uint64_t SecAddr = Writer->getSectionAddress(A->getFragment()->getParent());
FixedValue += SecAddr;
uint32_t Value2 = 0;
if (const MCSymbolRefExpr *B = Target.getSymB()) {
assert(Type == MachO::ARM_RELOC_VANILLA && "invalid reloc for 2 symbols");
- const MCSymbolData *B_SD = &Asm.getSymbolData(B->getSymbol());
+ const MCSymbol *SB = &B->getSymbol();
- if (!B_SD->getFragment())
+ if (!SB->getFragment())
Asm.getContext().reportFatalError(Fixup.getLoc(),
"symbol '" + B->getSymbol().getName() +
"' can not be undefined in a subtraction expression");
// Select the appropriate difference relocation type.
Type = MachO::ARM_RELOC_SECTDIFF;
- Value2 = Writer->getSymbolAddress(B_SD, Layout);
- FixedValue -= Writer->getSectionAddress(B_SD->getFragment()->getParent());
+ Value2 = Writer->getSymbolAddress(B->getSymbol(), Layout);
+ FixedValue -= Writer->getSectionAddress(SB->getFragment()->getParent());
}
// Relocations are written out in reverse order, so the PAIR comes first.
const MCAssembler &Asm,
const MCFragment &Fragment,
unsigned RelocType,
- const MCSymbolData *SD,
+ const MCSymbol &S,
uint64_t FixedValue) {
// Most cases can be identified purely from the symbol.
- if (Writer->doesSymbolRequireExternRelocation(SD))
+ if (Writer->doesSymbolRequireExternRelocation(S))
return true;
int64_t Value = (int64_t)FixedValue; // The displacement is signed.
int64_t Range;
// BL/BLX also use external relocations when an internal relocation
// would result in the target being out of range. This gives the linker
// enough information to generate a branch island.
- const MCSectionData &SymSD = Asm.getSectionData(
- SD->getSymbol().getSection());
- Value += Writer->getSectionAddress(&SymSD);
+ Value += Writer->getSectionAddress(&S.getSection());
Value -= Writer->getSectionAddress(Fragment.getParent());
// If the resultant value would be out of range for an internal relocation,
// use an external instead.
}
// Get the symbol data, if any.
- const MCSymbolData *SD = nullptr;
+ const MCSymbol *A = nullptr;
if (Target.getSymA())
- SD = &Asm.getSymbolData(Target.getSymA()->getSymbol());
+ A = &Target.getSymA()->getSymbol();
// FIXME: For other platforms, we need to use scattered relocations for
// internal relocations with offsets. If this is an internal relocation with
uint32_t Offset = Target.getConstant();
if (IsPCRel && RelocType == MachO::ARM_RELOC_VANILLA)
Offset += 1 << Log2Size;
- if (Offset && SD && !Writer->doesSymbolRequireExternRelocation(SD))
+ if (Offset && A && !Writer->doesSymbolRequireExternRelocation(*A))
return RecordARMScatteredRelocation(Writer, Asm, Layout, Fragment, Fixup,
Target, RelocType, Log2Size,
FixedValue);
"not yet implemented");
} else {
// Resolve constant variables.
- if (SD->getSymbol().isVariable()) {
+ if (A->isVariable()) {
int64_t Res;
- if (SD->getSymbol().getVariableValue()->EvaluateAsAbsolute(
- Res, Layout, Writer->getSectionAddressMap())) {
+ if (A->getVariableValue()->EvaluateAsAbsolute(
+ Res, Layout, Writer->getSectionAddressMap())) {
FixedValue = Res;
return;
}
}
// Check whether we need an external or internal relocation.
- if (requiresExternRelocation(Writer, Asm, *Fragment, RelocType, SD,
+ if (requiresExternRelocation(Writer, Asm, *Fragment, RelocType, *A,
FixedValue)) {
- RelSymbol = &SD->getSymbol();
+ RelSymbol = A;
// For external relocations, make sure to offset the fixup value to
// compensate for the addend of the symbol address, if it was
// undefined. This occurs with weak definitions, for example.
- if (!SD->getSymbol().isUndefined())
- FixedValue -= Layout.getSymbolOffset(SD->getSymbol());
+ if (!A->isUndefined())
+ FixedValue -= Layout.getSymbolOffset(*A);
} else {
// The index is the section ordinal (1-based).
- const MCSectionData &SymSD = Asm.getSectionData(
- SD->getSymbol().getSection());
- Index = SymSD.getOrdinal() + 1;
- FixedValue += Writer->getSectionAddress(&SymSD);
+ const MCSection &Sec = A->getSection();
+ Index = Sec.getOrdinal() + 1;
+ FixedValue += Writer->getSectionAddress(&Sec);
}
if (IsPCRel)
FixedValue -= Writer->getSectionAddress(Fragment->getParent());
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