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Author: A. Wilcox <awilfox@adelielinux.org>
Upstream-Status: Pending
This implements the R_PPC_REL32 relocation type, which is needed for the
OrcJIT to work properly on 32-bit PowerPC.
Needs more tests before submitting upstream, but seems to DTRT.
--- llvm-14.0.6.src/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp.old 2022-06-22 16:46:24.000000000 +0000
+++ llvm-14.0.6.src/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.cpp 2022-11-28 06:33:12.239921624 +0000
@@ -818,6 +818,13 @@
case ELF::R_PPC_ADDR16_HA:
writeInt16BE(LocalAddress, applyPPCha(Value + Addend));
break;
+ case ELF::R_PPC_REL32:
+ uint32_t FinalAddress = Section.getLoadAddressWithOffset(Offset);
+ int64_t delta = static_cast<int64_t>(Value - FinalAddress + Addend);
+ if (SignExtend64<32>(delta) != delta)
+ llvm_unreachable("Relocation R_PPC_REL32 overflow");
+ writeInt32BE(LocalAddress, delta);
+ break;
}
}
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