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a43565ac | 1 | /* Low-level statistical profiling support function. Linux version. |
04277e02 | 2 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
c9cf6dde AJ |
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 | |
a43565ac AZ |
6 | modify it under the terms of the GNU Lesser General Public License as |
7 | published by the Free Software Foundation; either version 2.1 of the | |
8 | License, or (at your option) any later version. | |
c9cf6dde AJ |
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 | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
c9cf6dde AJ |
18 | |
19 | #include <signal.h> | |
20 | #include <sigcontextinfo.h> | |
21 | ||
a43565ac | 22 | /* sa_sigaction signature to use along SA_SIGINFO. */ |
c9cf6dde | 23 | static void |
a43565ac | 24 | __profil_counter (int signo, siginfo_t *info, void *ctx) |
c9cf6dde | 25 | { |
a43565ac | 26 | profil_count (sigcontext_get_pc (ctx)); |
5e3ab761 UD |
27 | |
28 | /* This is a hack to prevent the compiler from implementing the | |
29 | above function call as a sibcall. The sibcall would overwrite | |
30 | the signal context. */ | |
31 | asm volatile (""); | |
c9cf6dde | 32 | } |