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MC/Mach-O: Don't generate relocations for PCrel fixups to local labels.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98080 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2010-03-09 21:27:30 +00:00
parent f7b730425f
commit e180fa962c
1 changed files with 19 additions and 9 deletions
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28
lib/MC/MCAssembler.cpp
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@ -440,7 +440,7 @@ public:
DenseMap<const MCSymbol*,MCSymbolData*> &SymbolMap,
std::vector<MachRelocationEntry> &Relocs) {
uint32_t Address = Fragment.getOffset() + Fixup.Offset;
unsigned IsPCRel = 0;
unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
unsigned Type = RIT_Vanilla;
@ -468,10 +468,16 @@ public:
// The value which goes in the fixup is current value of the expression.
Fixup.FixedValue = Value - Value2 + Target.getConstant();
if (isFixupKindPCRel(Fixup.Kind)) {
if (IsPCRel)
Fixup.FixedValue -= Address;
IsPCRel = 1;
}
// If this fixup is a vanilla PC relative relocation for a local label, we
// don't need a relocation.
//
// FIXME: Implement proper atom support.
if (IsPCRel && Target.getSymA() && Target.getSymA()->isTemporary() &&
!Target.getSymB())
return;
MachRelocationEntry MRE;
MRE.Word0 = ((Address << 0) |
@ -516,7 +522,7 @@ public:
uint32_t Address = Fragment.getOffset() + Fixup.Offset;
uint32_t Value = 0;
unsigned Index = 0;
unsigned IsPCRel = 0;
unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
unsigned IsExtern = 0;
unsigned Type = 0;
@ -554,11 +560,15 @@ public:
// The value which goes in the fixup is current value of the expression.
Fixup.FixedValue = Value + Target.getConstant();
if (isFixupKindPCRel(Fixup.Kind)) {
if (IsPCRel)
Fixup.FixedValue -= Address;
IsPCRel = 1;
}
// If this fixup is a vanilla PC relative relocation for a local label, we
// don't need a relocation.
//
// FIXME: Implement proper atom support.
if (IsPCRel && Target.getSymA() && Target.getSymA()->isTemporary())
return;
// struct relocation_info (8 bytes)
MachRelocationEntry MRE;