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- /* Machine-dependent SIGPROF signal handler. IA-64 version.
- Copyright (C) 1996-2019 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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