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d5efd131 | 1 | /* Machine-dependent SIGPROF signal handler. IA-64 version. |
04277e02 | 2 | Copyright (C) 1996-2019 Free Software Foundation, Inc. |
d5efd131 MF |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
75efb018 MF |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
d5efd131 MF |
18 | |
19 | /* In many Unix systems signal handlers are called like this | |
20 | and the interrupted PC is easily findable in the `struct sigcontext'. */ | |
21 | ||
22 | static void | |
ea41469b | 23 | __profil_counter (int signr, siginfo_t *si, struct sigcontext *scp) |
d5efd131 MF |
24 | { |
25 | unsigned long ip = scp->sc_ip & ~0X3ULL, slot = scp->sc_ip & 0x3ull; | |
26 | ||
27 | /* Note: Linux/ia64 encodes the slot number in bits 0 and 1. We | |
28 | want to multiply the slot number by four so we can use bins of | |
29 | width 4 to get accurate instruction-level profiling. */ | |
30 | profil_count ((void *) (ip + 4*slot)); | |
31 | } |