tree fd8b30e3fade41b37442cb6337577b8c18a231bf
parent 97cf2e6e1d0b5fdd3299ab12e2890548f13aa861
author Saleem Abdulrasool <compnerd@compnerd.org> 1627922096 +0000
committer Copybara-Service <copybara-worker@google.com> 1628224049 -0700

unwind: repair register restoration for OR1K

Currently, OR1K architecture put the program counter at offset 0x128 of
the current `or1k_thread_state_t`. However, the PC is restored after
updating the thread pointer in `r3`, which causes the PC to be fetched
incorrectly.

This patch swaps the order of restoration of `r9` and `r3`, such that
the PC is restored to `r9` using the current thread state.

Patch by Oi Chee Cheung!

Reviewed By: whitequark, compnerd

Differential Revision: https://reviews.llvm.org/D107042

GitOrigin-RevId: d6d0b6559e97a3d0b258814e870d3e19f3a7ffcc