[all-commits] [llvm/llvm-project] 0247b5: [LLDB][RISCV] Add riscv software breakpoint trap code

[Emmmer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0247b5aaae7ae02f140ca9509dc68078cfe55898
      https://github.com/llvm/llvm-project/commit/0247b5aaae7ae02f140ca9509dc68078cfe55898
  Author: Emmmer <yjhdandan at 163.com>
  Date:   2022-08-11 (Thu, 11 Aug 2022)

  Changed paths:
    M lldb/source/Host/common/NativeProcessProtocol.cpp
    M lldb/source/Target/Platform.cpp

  Log Message:
  -----------
  [LLDB][RISCV] Add riscv software breakpoint trap code

Added:
- Take RISC-V `ebreak` instruction as breakpoint trap code, so our breakpoint works as expected now.

Further work:
- RISC-V does not support hardware single stepping yet. A software implementation may come in future PR.
- Add support for RVC extension (the trap code, etc.).

Reviewed By: DavidSpickett

Differential Revision: https://reviews.llvm.org/D131566