/* Machine-dependent SIGPROF signal handler.  IA-64 version.

   Copyright (C) 1996-2018 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 Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

/* 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, siginfo_t *si, struct sigcontext *scp)

{

  unsigned long ip = scp->sc_ip & ~0X3ULL, slot = scp->sc_ip & 0x3ull;

  /* Note: Linux/ia64 encodes the slot number in bits 0 and 1.  We

     want to multiply the slot number by four so we can use bins of

     width 4 to get accurate instruction-level profiling.  */

  profil_count ((void *) (ip + 4*slot));

}