commit 389c9bb3745fc270bdaacaedfaa6e9339200866f
author Luke Cheeseman <luke.cheeseman@arm.com> Mon Sep 24 15:55:35 2018 +0000
committer Luke Cheeseman <luke.cheeseman@arm.com> Mon Sep 24 15:55:35 2018 +0000
tree f28865b0ca782c0127fbe1da444305ad879ecd94
parent f3eb7f52f1d78bf0977f416cb5efbde4e676456f

[AArch64] Unwinding support for return address signing

- When return address signing is enabled, the LR may be signed on function entry
- When an exception is thrown the return address is inspected used to unwind the call stack
- Before this happens, the return address must be correctly authenticated to avoid causing an abort by dereferencing the signed pointer

Differential Revision: https://reviews.llvm.org/D51432



git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@342895 91177308-0d34-0410-b5e6-96231b3b80d8