Go语言编译原理之源码调试

brew install dlv

$ dlv debug 待调试文件

$ gc dlv debug /usr/local/go/src/cmd/compile/main.go
Type 'help' for list of commands.
(dlv) help
The following commands are available:
Running the program:
    call ------------------------ (EXPERIMENTAL!!!)恢复进程，注入函数调用（实验的）
    continue (alias: c) --------- 运行到断点或程序终止
    next (alias: n) ------------- 执行下一行.
    rebuild --------------------- 重新生成目标可执行文件并重新启动它. 如果可执行文件不是由dlv构建，它就不能工作.
    restart (alias: r) ---------- 重新启动一个进程.
    step (alias: s) ------------- 单步调试.
    step-instruction (alias: si)  Single step a single cpu instruction.
    stepout (alias: so) --------- Step out of the current function.
Manipulating breakpoints:
    break (alias: b) ------- 设置一个端点.
    breakpoints (alias: bp)  打印所有的端点信息.
    clear ------------------ 清除端点.
    clearall --------------- 删除多个端点.
    condition (alias: cond)  设置断点条件.
    on --------------------- 在命中断点时执行命令.
    toggle ----------------- 打开或关闭断点.
    trace (alias: t) ------- Set tracepoint.
    watch ------------------ Set watchpoint.
Viewing program variables and memory:
    args ----------------- 打印函数参数.
    display -------------- 每次程序停止时打印表达式的值.
    examinemem (alias: x)  检查给定地址的原始内存.
    locals --------------- 打印局部变量.
    print (alias: p) ----- 打印变量值.
    regs ----------------- 打印CPU寄存器的内容.
    set ------------------ 更改变量的值.
    vars ----------------- 打印包变量.
    whatis --------------- 打印表达式的类型.
Listing and switching between threads and goroutines:
    goroutine (alias: gr) -- 显示或更改当前goroutine
    goroutines (alias: grs)  列出程序goroutines.
    thread (alias: tr) ----- 切换到指定的线程.
    threads ---------------- 打印每个跟踪线程的信息.
Viewing the call stack and selecting frames:
    deferred --------- 在延迟调用的上下文中执行命令.
    down ------------- 向下移动当前帧.
    frame ------------ 设置当前帧，或在其他帧上执行命令.
    stack (alias: bt)  打印堆栈信息.
    up --------------- 向上移动当前帧
Other commands:
    config --------------------- 更改配置参数.
    disassemble (alias: disass)  Disassembler.
    dump ----------------------- 从当前进程状态创建核心转储
    edit (alias: ed) ----------- Open where you are in $DELVE_EDITOR or $EDITOR
    exit (alias: quit | q) ----- 退出调试.
    funcs ---------------------- 打印函数列表.
    help (alias: h) ------------ 打印帮助信息.
    libraries ------------------ 列出加载的动态库
    list (alias: ls | l) ------- 展示源代码.
    source --------------------- 执行包含delve命令列表的文件
    sources -------------------- 打印源文件列表
    types ---------------------- 打印类型列表
Type help followed by a command for full documentation.
(dlv)