[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 18:49:26 PST 2021
charco added a comment.
In D96901#2570338 <https://reviews.llvm.org/D96901#2570338>, @charco wrote:
> In D96901#2570327 <https://reviews.llvm.org/D96901#2570327>, @joerg wrote:
>> Registers_arm64::jumpto in UnwindRegistersRestore.S.
> Isn't that code filling x30 with the `__pc` register?
> Line 587 says: ` ldr x30, [x0, #0x100] // restore pc into lr`
> And offset #0x100 is `__pc`
Ah, but we are not restoring the x30 register.
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