[PATCH] D155672: [JITLink][PowerPC] Correct handling of R_PPC64_REL24_NOTOC
Kai Luo via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Jul 18 22:43:59 PDT 2023
lkail created this revision.
lkail added reviewers: PowerPC, lhames, MaskRay, stefanp, sfertile, nemanjai.
Herald added subscribers: shchenz, kbarton, hiraditya.
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lkail requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.
According to the ELFv2 ABI
> This relocation type is used to specify a function call where the TOC pointer is not initialized. It is
similar to R_PPC64_REL24 in that it specifies a symbol to be resolved. If the symbol resolves to a function that requires a TOC pointer (as determined by st_other bits) then a link editor must arrange
for the call to be via the global entry point of the called function. Any stub code must not rely on a
valid TOC base address in r2.
This patch fixes handling of `R_PPC64_REL24_NOTOC` by using the same stub code sequence as lld.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D155672
Files:
llvm/include/llvm/ExecutionEngine/JITLink/ppc64.h
llvm/lib/ExecutionEngine/JITLink/ELF_ppc64.cpp
llvm/lib/ExecutionEngine/JITLink/ppc64.cpp
llvm/test/ExecutionEngine/JITLink/ppc64/ELF_ppc64le_relocations.s
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