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On 64bit we may have a personality function which requires 64 bits to

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be encoded.

llvm-svn: 64600
This commit is contained in:
Nicolas Geoffray 2009-02-15 20:49:23 +00:00
parent 6c1ce1dbd5
commit 93eebdfcc7
1 changed files with 13 additions and 7 deletions
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16
lib/ExecutionEngine/JIT/JITDwarfEmitter.cpp
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@ -519,14 +519,20 @@ JITDwarfEmitter::EmitCommonEHFrame(const Function* Personality) const {
MCE->emitByte(RI->getDwarfRegNum(RI->getRARegister(), true));
if (Personality) {
MCE->emitULEB128Bytes(7);
// Augmentation Size: 3 small ULEBs of one byte each, and the personality
// function which size is PointerSize.
MCE->emitULEB128Bytes(3 + PointerSize);
// Direct encoding, because we use the function pointer. Not relative,
// because the current PC value may be bigger than the personality
// function pointer.
// We set the encoding of the personality as direct encoding because we use
// the function pointer. The encoding is not relative because the current
// PC value may be bigger than the personality function pointer.
if (PointerSize == 4) {
MCE->emitByte(dwarf::DW_EH_PE_sdata4);
MCE->emitInt32(((intptr_t)Jit.getPointerToGlobal(Personality)));
} else {
MCE->emitByte(dwarf::DW_EH_PE_sdata8);
MCE->emitInt64(((intptr_t)Jit.getPointerToGlobal(Personality)));
}
MCE->emitULEB128Bytes(dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4);
MCE->emitULEB128Bytes(dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4);