[libcxx-commits] [PATCH] D96901: [libunwind] Add support for PC reg column in arm64
Marco Vanotti via Phabricator via libcxx-commits
libcxx-commits at lists.llvm.org
Wed Feb 17 18:06:52 PST 2021
charco added a comment.
In D96901#2570259 <https://reviews.llvm.org/D96901#2570259>, @joerg wrote:
> I don't get this change. The restore code is literally returning by jumping to x30, so how is splitting PC and LR supposed to work?
My understanding is that it would be used with `.cfi_return_column 32`, so `x30` is no longer used as the return address. I tested it locally in Fuchsia and it worked.
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