Adding printf to the starting of all functions in a file

Question

I have some very large C files, having lots of functions. I need to trace the execution path at run time. There is no way I can trace it through debugging as its a hyperviso

Answer 1

Here is a nice example of what you want.

Answer 2

Just pass -finstrument-functions to gcc when compiling. See the gcc(1) man page for details.