找到全局变量 [英] finding global variables

问题描述

我有一个非常大的C程序，包含数百个文件;我想

知道什么都是

程序中定义的全局变量。我该怎么做。


谢谢

I''ve a very large C program consisting of hundred of files; I want to
know what are all
the global variables defined in the program. how do i do this.

thanks

推荐答案

sinbad写道：

sinbad wrote:

我有一个非常庞大的C程序，包含数百个文件;我想

知道什么都是

程序中定义的全局变量。我该怎么做。


谢谢

I''ve a very large C program consisting of hundred of files; I want to
know what are all
the global variables defined in the program. how do i do this.

thanks

假设我有源代码全球跟随：


....

int myglob = 1;

....


如果对二进制文件执行''nm''，则输出结果为

Let''s say I have source code with the following global:

....
int myglob = 1;
....

If you perform ''nm'' on the binary, the output is

nm mybin | grep glob

080489e0 t __do_global_ctors_aux

08048510 t __do_global_dtors_aux

08049c60 D myglob

nm mybin | grep glob
080489e0 t __do_global_ctors_aux
08048510 t __do_global_dtors_aux
08049c60 D myglob

来自nm的手册页......


" D"符号位于初始化数据部分（保留全局数据）


希望有所帮助，

Missaka Wijekoon

From the man page for nm...

"D" The symbol is in the initialized data section (where globals are kept)

Hope that helps,
Missaka Wijekoon

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