diff options
Diffstat (limited to 'lib/MC/MCMachOStreamer.cpp')
| -rw-r--r-- | lib/MC/MCMachOStreamer.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/lib/MC/MCMachOStreamer.cpp b/lib/MC/MCMachOStreamer.cpp index 99a819f719..770105d0e5 100644 --- a/lib/MC/MCMachOStreamer.cpp +++ b/lib/MC/MCMachOStreamer.cpp @@ -333,7 +333,23 @@ void MCMachOStreamer::EmitBytes(StringRef Data, unsigned AddrSpace) { void MCMachOStreamer::EmitValue(const MCExpr *Value, unsigned Size, unsigned AddrSpace) { - new MCFillFragment(*AddValueSymbols(Value), Size, 1, CurSectionData); + // Assume the front-end will have evaluate things absolute expressions, so + // just create data + fixup. + MCDataFragment *DF = dyn_cast_or_null<MCDataFragment>(getCurrentFragment()); + if (!DF) + DF = new MCDataFragment(CurSectionData); + + // Avoid fixups when possible. + int64_t AbsValue; + if (Value->EvaluateAsAbsolute(AbsValue)) { + // FIXME: Endianness assumption. + for (unsigned i = 0; i != Size; ++i) + DF->getContents().push_back(uint8_t(AbsValue >> (i * 8))); + } else { + DF->getFixups().push_back(MCAsmFixup(DF->getContents().size(), + *AddValueSymbols(Value), Size)); + DF->getContents().resize(DF->getContents().size() + Size, 0); + } } void MCMachOStreamer::EmitValueToAlignment(unsigned ByteAlignment, |