tree 3526ca90fd35cf6af760e7f35676e4ff2656d71c
parent 1035189ae8bb7c7cd46146e2c5e494351a374b37
author whitequark <whitequark@whitequark.org> 1526497781 +0000
committer whitequark <whitequark@whitequark.org> 1526497781 +0000

[OR1K] Add a dedicated PC register to register state.

Before this commit, R9, the link register, was used as PC register.
However, a stack frame may have R9 not set to PC on entry, either
because it uses a custom calling convention, or, more likely,
because this is a signal or exception stack frame. Using R9 as
PC register made it impossible to unwind such frames.

All other architectures similarly use a dedicated PC register.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@332512 91177308-0d34-0410-b5e6-96231b3b80d8