[libcxx-commits] [PATCH] D124765: [libunwind][SystemZ] Unwind out of signal handlers

[Ulrich Weigand via Phabricator via libcxx-commits]

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Unwinding out of signal handlers currently does not work since the sigreturn trampoline is not annotated with CFI data.

Fix this by detecting the sigreturn trampoline during unwinding and providing appropriate unwind data manually.  This follows closely the approach used by existing code for the AArch64 target.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D124765

Files:
  libunwind/src/UnwindCursor.hpp
  libunwind/test/signal_unwind.pass.cpp
  libunwind/test/unwind_leaffunction.pass.cpp

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