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将 AMDGPU Code Object (.co) 反汇编为 LLVM 汇编 (.s) 文件

Project description

feifei-hsa-elf-diss

将 AMDGPU Code Object 二进制文件(.co)反汇编为可被 clang/LLVM 重新汇编的 LLVM 汇编 .s 文件,便于修改指令后再编译回 .co

功能

  • 输入:ELF64 amdhsa 格式的 .co 文件
  • 输出:含 .text.rodata/.amdhsa_kernel.amdgpu_metadata.s 文件
  • 反汇编:使用 ROCm 提供的 llvm-objdump -d 获取指令助记符(含注释与符号行)

安装

pip install feifei-hsa-elf-diss

依赖:Python 3.8+、pyelftoolsmsgpack。安装时会自动安装。另需系统中有 llvm-objdump(如 ROCm 的 /opt/rocm/llvm/bin/llvm-objdump),可通过环境变量 LLVM_OBJDUMP 指定路径。

用法

feifei-hsa-elf-diss -i kernel.co -o kernel.s

指定 llvm-objdump 路径:

LLVM_OBJDUMP=/path/to/llvm-objdump feifei-hsa-elf-diss -i kernel.co -o kernel.s

或:

feifei-hsa-elf-diss -i kernel.co -o kernel.s --objdump /path/to/llvm-objdump

再汇编为 .co

编辑生成的 kernel.s 后,用 clang 重新汇编:

# 根据实际 gfx 替换 <gfx>,如 gfx942
/opt/rocm/llvm/bin/clang++ -x assembler -target amdgcn--amdhsa --offload-arch=<gfx> kernel.s -o kernel.co

开发 / 从源码运行

git clone https://gitee.com/feifei14119/feifei-hsa-elf-diss.git
cd feifei-hsa-elf-diss
pip install -e .
feifei-hsa-elf-diss -i your.co -o your.s

或在不安装的情况下:

cd codiss && pip install -r requirements.txt
PYTHONPATH=. python tools/codiss.py -i kernel.co -o kernel.s

License

MIT

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