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/* Machine-dependent SIGPROF signal handler. IA-64 version.
Copyright (C) 1996-2014 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));
}
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