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__builtin_return_address获得程序运行栈
source link: http://abcdxyzk.github.io/blog/2013/11/20/lang-c-buildin-addr/
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__builtin_return_address获得程序运行栈
2013-11-20 18:34:00
gcc的编译特性使用__builtin_return_address(level)打印出一个函数的堆栈地址。其中 level代表是堆栈中第几层调用地址，__builtin_return_address(0)表示第一层调用地址，即当前函数，__builtin_return_address(1)表示第二层。如代码
#include <stdio.h>
void f()
{
printf("%p,%p" , __builtin_return_address(0), __builtin_return_address(1));
//printk("Caller is %pS\n", __builtin_return_address(0));
}
void g()
{
f();
}
int main()
{
g();
}分别打印出函数f()和g() 的函数地址，我们通过objdump 出来的文件去查找打印出来的函数地址，这样就能看到调用的函数名了。
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