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Thumb2 only force the fixup thumb bit for data relocations.

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rdar://10493453

llvm-svn: 145318
This commit is contained in:
Jim Grosbach 2011-11-28 23:39:00 +00:00
parent bc47555417
commit ea721eb4b3
1 changed files with 8 additions and 8 deletions
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16
lib/MC/MCAssembler.cpp
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@ -273,13 +273,17 @@ bool MCAssembler::EvaluateFixup(const MCAsmLayout &Layout,
Value = Target.getConstant(); Value = Target.getConstant();
bool IsThumb = false; bool SetThumbBit = false;
if (const MCSymbolRefExpr *A = Target.getSymA()) { if (const MCSymbolRefExpr *A = Target.getSymA()) {
const MCSymbol &Sym = A->getSymbol().AliasedSymbol(); const MCSymbol &Sym = A->getSymbol().AliasedSymbol();
if (Sym.isDefined()) if (Sym.isDefined())
Value += Layout.getSymbolOffset(&getSymbolData(Sym)); Value += Layout.getSymbolOffset(&getSymbolData(Sym));
if (isThumbFunc(&Sym)) // ARM data fixups based from a thumb function address need to have the low
IsThumb = true; // bit set. The actual value is always at least 16-bit aligned, so the
// low bit is normally clear and available for use as an ISA flag for
// interworking.
if (Fixup.getKind() == FK_Data_4 && isThumbFunc(&Sym))
SetThumbBit = true;
} }
if (const MCSymbolRefExpr *B = Target.getSymB()) { if (const MCSymbolRefExpr *B = Target.getSymB()) {
const MCSymbol &Sym = B->getSymbol().AliasedSymbol(); const MCSymbol &Sym = B->getSymbol().AliasedSymbol();
@ -302,11 +306,7 @@ bool MCAssembler::EvaluateFixup(const MCAsmLayout &Layout,
Value -= Offset; Value -= Offset;
} }
// ARM fixups based from a thumb function address need to have the low if (SetThumbBit)
// bit set. The actual value is always at least 16-bit aligned, so the
// low bit is normally clear and available for use as an ISA flag for
// interworking.
if (IsThumb)
Value |= 1; Value |= 1;
return IsResolved; return IsResolved;