1/* Low-level statistical profiling support function. Linux version.
2 Copyright (C) 2001-2021 Free Software Foundation, Inc.
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 License as
7 published by the Free Software Foundation; either version 2.1 of the
8 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
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <signal.h>
20#include <sigcontextinfo.h>
21
22/* sa_sigaction signature to use along SA_SIGINFO. */
23static void
24__profil_counter (int signo, siginfo_t *info, void *ctx)
25{
26 profil_count (sigcontext_get_pc (ctx));
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 ("");
32}
33