使用GCC产生可读的汇编？ [英] Using GCC to produce readable assembly?

问题描述

我不知道如何使用 GCC 在我的C源文件转储的一个助记符机code，所以我可以看看我的code的被编译成。为此，您可以用Java，但我一直没能找到与海湾合作委员会的方式。

I was wondering how to use GCC on my C source file to dump a mnemonic version of the machine code so I could see what my code was being compiled into. You can do this with Java but I haven't been able to find a way with GCC.

我想重新写汇编一个C的方法，看如何GCC它会是一个很大的帮助。

I am trying to re-write a C method in assembly and seeing how GCC does it would be a big help.

推荐答案

如果您使用调试符号编译，你可以使用 objdump的来产生一个更可读的拆卸。

If you compile with debug symbols, you can use objdump to produce a more readable disassembly.

>objdump --help
[...]
-S, --source             Intermix source code with disassembly
-l, --line-numbers       Include line numbers and filenames in output

---

---

例如：

> gcc -g -c test.c
> objdump -d -M intel -S test.o

test.o:     file format elf32-i386


Disassembly of section .text:

00000000 <main>:
#include <stdio.h>

int main(void)
{
   0:   55                   	push   ebp
   1:   89 e5                	mov    ebp,esp
   3:   83 e4 f0             	and    esp,0xfffffff0
   6:   83 ec 10             	sub    esp,0x10
    puts("test");
   9:   c7 04 24 00 00 00 00 	mov    DWORD PTR [esp],0x0
  10:   e8 fc ff ff ff       	call   11 <main+0x11>

    return 0;
  15:   b8 00 00 00 00       	mov    eax,0x0
}
  1a:   c9                   	leave  
  1b:   c3                   	ret

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