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PowerPC: EH adjustments

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This patch adjust the r171506 to make all DWARF enconding pc-relative
for PPC64. It also adds the R_PPC64_REL32 relocation handling in MCJIT
(since the eh_frame will not generate PIC-relative relocation) and also
adds the emission of stubs created by the TTypeEncoding.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171979 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adhemerval Zanella
2013-01-09 17:08:15 +00:00
parent cde8168964
commit a1db5de9e7
5 changed files with 38 additions and 14 deletions
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9
lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp
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@@ -523,7 +523,7 @@ void RuntimeDyldELF::resolvePPC64Relocation(const SectionEntry &Section,
case ELF::R_PPC64_ADDR32 : {
int32_t Result = static_cast<int32_t>(Value + Addend);
if (SignExtend32<32>(Result) != Result)
llvm_unreachable("Relocation R_PPC64_REL32 overflow");
llvm_unreachable("Relocation R_PPC64_ADDR32 overflow");
writeInt32BE(LocalAddress, Result);
} break;
case ELF::R_PPC64_REL24 : {
@@ -534,6 +534,13 @@ void RuntimeDyldELF::resolvePPC64Relocation(const SectionEntry &Section,
// Generates a 'bl <address>' instruction
writeInt32BE(LocalAddress, 0x48000001 | (delta & 0x03FFFFFC));
} break;
case ELF::R_PPC64_REL32 : {
uint64_t FinalAddress = (Section.LoadAddress + Offset);
int32_t delta = static_cast<int32_t>(Value - FinalAddress + Addend);
if (SignExtend32<32>(delta) != delta)
llvm_unreachable("Relocation R_PPC64_REL32 overflow");
writeInt32BE(LocalAddress, delta);
} break;
case ELF::R_PPC64_ADDR64 :
writeInt64BE(LocalAddress, Value + Addend);
break;