Hi all,

I wonder if there is a software that can help us determine all possible origins of a function call. For example:

/* in file f1.c */
int f1() {
 x_func();
}

/* in file f2.c */
int f2() {
 x_func();
}

If we want to trace the origin of all function calls to x_func(), the output will be:

f1.c:f1()
f2.c:f2()

This is very useful when reading the source code. All answers are appreciated. Thank in advance :D