[llvm-branch-commits] [lldb][Process] Introduce LoongArch64 hw break/watchpoint support (PR #118770)

[via llvm-branch-commits]

https://github.com/wangleiat created https://github.com/llvm/llvm-project/pull/118770

This patch adds support for setting/clearing hardware watchpoints and
breakpoints on LoongArch 64-bit hardware.

Refer to the following document for the hw break/watchpoint:
https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#control-and-status-registers-related-to-watchpoints

Fix Failed Tests:
  lldb-shell :: Subprocess/clone-follow-child-wp.test
  lldb-shell :: Subprocess/clone-follow-parent-wp.test
  lldb-shell :: Subprocess/fork-follow-child-wp.test
  lldb-shell :: Subprocess/fork-follow-parent-wp.test
  lldb-shell :: Subprocess/vfork-follow-child-wp.test
  lldb-shell :: Subprocess/vfork-follow-parent-wp.test
  lldb-shell :: Watchpoint/ExpressionLanguage.test

Depends on: #118043