"Muhammed Fawzy" <mfawzymkh@xxxxxxxxxxx> writes: > However, I think I wasn't clear in my question, please let me try to > explain. > the problem I am trying to solve is that I want to save ecx, edx > registers around a specific function call, In my case I want to save > them around mcount call ( when you compile with -pg switch, mcount is > inserted after the prolog of each function ). > > the problem is that mcount and moncount implementation on the MAC > trashes the value of ecx register, and gcc doesn't emit code to save > registers around mcount calls.. I was hoping to find a gcc code gen > option to force gcc to save and restore register values around mcount > call. I see. The mcount function is a special part of the function prologue and is not handled as a regular function call. I don't think there is any way to do this without modifying gcc itself. Ian
