Harald Servat <harald.servat@xxxxxx> writes: > Is there any pointer on how GCC deals to generate profiles (-p/-pg flags)? There may be, but I doubt it. > In particular, I'm looking for information on (but not only): > > * How GCC instruments user routines when compiling a C file using -p/-pg It varies by target. You need to look at the gcc backend for your target. > * Where I can find the instrumentation code (i.e., the code called at > entry and exit points of user routines). Does it belongs to GCC package? > Or maybe belongs to a foreign package lib GLIBC? The entry/exit code is part of gcc. The code that it calls is mostly in gcc/libgcov.c. > * Where is the alarm set (signal SIGALRM or SIGPROF)? That is usually handled by the C library. For glibc, which is used on GNU/Linux, see the libc/gmon directory. Ian
