1 /* Helper definitions for profiling of shared libraries. 2 Copyright (C) 1998-2022 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 27 void _dl_mcount_wrapper(void * selfpc)28_dl_mcount_wrapper (void *selfpc) 29 { 30 GLRO(dl_mcount) ((ElfW(Addr)) RETURN_ADDRESS (0), (ElfW(Addr)) selfpc); 31 } 32 33 34 void _dl_mcount_wrapper_check(void * selfpc)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 } 40 libc_hidden_def (_dl_mcount_wrapper_check) 41