I'm using a gcc plugin to do some instrument work during compilation. Inserting codes in a function is very simple, just like those passes do in gcc. But Can I create new functions, and append it to executables? I want to do the instrument by this way: to create new functions, add my codes into them, then instrument some calls to them. foo: call to new_function; //instrument a call new_function: //created function instrument codes here I think the most difficult part is to create functions. Since we can add arbitrary codes in the functions, it's OK to create "empty functions" at first. So is it possible to do so? Any tips?
