diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/MC/ELFObjectWriter.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/MC/ELFObjectWriter.cpp b/lib/MC/ELFObjectWriter.cpp index 3f939bbbc0..c064e24128 100644 --- a/lib/MC/ELFObjectWriter.cpp +++ b/lib/MC/ELFObjectWriter.cpp @@ -616,6 +616,10 @@ static const MCSymbol *getBaseSymbol(const MCAsmLayout &Layout, void ELFObjectWriter::WriteSymbol(SymbolTableWriter &Writer, ELFSymbolData &MSD, const MCAsmLayout &Layout) { MCSymbolData &OrigData = *MSD.SymbolData; + assert(!OrigData.getFragment() || + (&OrigData.getFragment()->getParent()->getSection() == + &OrigData.getSymbol().getSection()) && + "The symbol's section doesn't match the fragment's symbol"); const MCSymbol *Base = getBaseSymbol(Layout, OrigData.getSymbol()); // This has to be in sync with when computeSymbolTable uses SHN_ABS or @@ -1244,6 +1248,19 @@ getCompressedFragment(MCAsmLayout &Layout, return CompressedFragment; } +static void UpdateSymbols(const MCAsmLayout &Layout, const MCSectionData &SD, + MCAssembler::symbol_range Symbols, + MCFragment *NewFragment) { + for (MCSymbolData &Data : Symbols) { + MCFragment *F = Data.getFragment(); + if (F && F->getParent() == &SD) { + Data.setOffset(Data.getOffset() + + Layout.getFragmentOffset(Data.Fragment)); + Data.setFragment(NewFragment); + } + } +} + static void CompressDebugSection(MCAssembler &Asm, MCAsmLayout &Layout, const MCSectionELF &Section, MCSectionData &SD) { @@ -1257,6 +1274,10 @@ static void CompressDebugSection(MCAssembler &Asm, MCAsmLayout &Layout, if (!CompressedFragment) return; + // Update the fragment+offsets of any symbols referring to fragments in this + // section to refer to the new fragment. + UpdateSymbols(Layout, SD, Asm.symbols(), CompressedFragment.get()); + // Invalidate the layout for the whole section since it will have new and // different fragments now. Layout.invalidateFragmentsFrom(&Fragments.front()); |