glibc/sysdeps/generic/profil-counter.h

/* Machine-dependent SIGPROF signal handler.  "Generic" version w/ sigcontext
Copyright (C) 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.  */

/* In many Unix systems signal handlers are called like this
   and the interrupted PC is easily findable in the `struct sigcontext'.  */

static void
profil_counter (int signr, int code, struct sigcontext *scp)
{
  profil_count ((void *) scp->sc_pc);
}