1/* Helper definitions for profiling of shared libraries.
2 Copyright (C) 1998-2024 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 <dlfcn.h>
20#include <elf.h>
21#include <ldsodefs.h>
22
23/* This is the map for the shared object we profile. It is defined here
24 only because we test for this value being NULL or not. */
25
26
27void
28_dl_mcount_wrapper (void *selfpc)
29{
30 GLRO(dl_mcount) ((ElfW(Addr)) RETURN_ADDRESS (0), (ElfW(Addr)) selfpc);
31}
32
33
34void
35_dl_mcount_wrapper_check (void *selfpc)
36{
37 if (GL(dl_profile_map) != NULL)
38 GLRO(dl_mcount) ((ElfW(Addr)) RETURN_ADDRESS (0), (ElfW(Addr)) selfpc);
39}
40libc_hidden_def (_dl_mcount_wrapper_check)
41

source code of glibc/elf/libc-dl-profstub.c