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32 lines
1.4 KiB
C
32 lines
1.4 KiB
C
/* Machine-dependent SIGPROF signal handler. IA-64 version.
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Copyright (C) 1996-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* In many Unix systems signal handlers are called like this
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and the interrupted PC is easily findable in the `struct sigcontext'. */
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static void
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__profil_counter (int signr, siginfo_t *si, struct sigcontext *scp)
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{
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unsigned long ip = scp->sc_ip & ~0X3ULL, slot = scp->sc_ip & 0x3ull;
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/* Note: Linux/ia64 encodes the slot number in bits 0 and 1. We
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want to multiply the slot number by four so we can use bins of
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width 4 to get accurate instruction-level profiling. */
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profil_count ((void *) (ip + 4*slot));
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}
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