[PATCH] D83669: [PowerPC] Support for R_PPC64_REL24_NOTOC calls where the caller has no TOC and the callee is not DSO local

[Stefan Pintilie via Phabricator via llvm-commits]

stefanp created this revision.
stefanp added reviewers: nemanjai, sfertile, MaskRay, ruiu, hfinkel, PowerPC.
Herald added subscribers: shchenz, kbarton, arichardson, emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.

This patch supports the situation where caller does not have a valid TOC and
calls using the R_PPC64_REL24_NOTOC relocation and the callee is not DSO local.
In this case the call cannot be made directly since the callee may or may not
require a valid TOC pointer. As a result this situation requires an R12 <https://reviews.llvm.org/source/lldb/> setup
plt stub.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83669

Files:
  lld/ELF/Arch/PPC64.cpp
  lld/ELF/Thunks.cpp
  lld/test/ELF/Inputs/ppc64-callee-global.s
  lld/test/ELF/ppc64-pcrel-call-to-extern.s

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