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@peyt/pdb

v0.0.2

Published

pdb - PLang debugger, GDB-style CLI on liblldb

Downloads

46

Readme

pdb — PLang 调试器

GDB 风格的 PLang 调试器,基于 LLDB C++ API。支持断点、单步、变量查看、栈回溯、表达式求值。

安装

npm i -g --allow-scripts=@peyt/pdb @peyt/pdb

安装需要你机器上有 LLVM/LLDB:

  • macOS:brew install llvm
  • Linux(Debian/Ubuntu):sudo apt install llvm
  • Windows:从 https://llvm.org 安装并设置 LLVM_HOME

安装脚本会自动定位 LLDB 并配置 pdb 使用它。 如果 LLVM 不在标准位置,请先设置 LLVM_HOME 环境变量。

编译可调试程序

pdb 调试需要调试信息。用 plc 编译 PLang 程序:

plc -O0 app.plang -o app     # -O0 保留完整调试信息,链接时自动生成 dSYM

macOS 上 plc 链接时会自动生成 app.dSYM,pdb 依赖它读取变量与断点信息。

使用

pdb ./app
(pdb) break app.plang:6      # 按行号断点
(pdb) break fib               # 按函数名断点
(pdb) run                     # 运行
(pdb) print n                 # 打印变量/表达式
(pdb) info locals             # 局部变量
(pdb) info args               # 参数
(pdb) bt                      # 栈回溯
(pdb) next / step / finish    # 单步
(pdb) continue                # 继续
(pdb) quit                    # 退出

命令列表见 help。

许可证

AGPL-3.0