在GDB的每一行设置断点

问题描述

有没有办法在GDB代码的每一行设置一个断点？很明显，我不想为每一行打出使用 si （ stepi ）到代码的指令步骤。您可以使用 ni （ nexti ）来跳过您不感兴趣的库函数。如果您意外进入其中之一， finish 应该让你回到原来的程序。在这个级别工作的人通常会设置gdb来显示接下来要执行的几条指令，例如， disp / 3i $ pc 。

Is there a way to set a breakpoint at every line in the code with GDB? Obviously I don't want to hit b *addr for every single line, so I'm wondering if there's a fast way to do this.

EditNote that I am running a binary created by someone else and I do not have access to the source code. Unfortunately, that binary has not been compiled with the -g flag. Therefore, I cannot just single step through each line in the code.

Further EditAs Jason points out below, you can indeed single step through the code so long as you use si or ni, as opposed to just simply s (step) or n (next). n or s work fine, though, if the source code had been compiled with -g, but it steps through lines of source code, as opposed to stepping through every assembly instruction like ni or si do in a binary that was compiled without -g.

解决方案

Use si (stepi) to instruction step through the code. You can use ni (nexti) to step over library functions you're not interested in. If you accidentally step into one of them, finish should get you back to your original routine. People working at this level typically have gdb set to display the next few instructions that are about to be executed, e.g. disp/3i $pc.

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