20.5 Files

• gprof/* The gprof directory contains the files necessary for the gprof program itself.
• libc/gmon/gmon.c contains moncontrol() and monstartup().
• libc/gmon/mcount.c contains the C-language _mcount routine.
• libc/x86/mcount_md.S contains the asm routines which are linked into functions compiled with -pg (mcount for C-language functions). The __mcount routine must be called manually by your assembly functions, though this call is handled automatically if you use the ENTRY() macro.
• oskit/c/sys/gmon.h
• oskit/c/sysprofile.h The profiling headers.
• kern/x86/pc/profil.c The profil() system call (architecture-dependent).