| /* 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)); |
| } |
