1 /* Low-level statistical profiling support function. Linux/ARM version.
2 Copyright (C) 1996-2021 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
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
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 void
__profil_counter(int signo,siginfo_t * _si,void * scp)23 __profil_counter (int signo, siginfo_t *_si, void *scp)
24 {
25 profil_count (sigcontext_get_pc (scp));
26
27 /* This is a hack to prevent the compiler from implementing the
28 above function call as a sibcall. The sibcall would overwrite
29 the signal context. */
30 asm volatile ("");
31 }
32 #ifndef __profil_counter
33 # include <shlib-compat.h>
34 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_31)
35 compat_symbol (libc, __profil_counter, profil_counter, GLIBC_2_0);
36 # endif
37 #endif
38