elf/dl-profstub.c

   1 /* Helper definitions for profiling of shared libraries.
   2    Copyright (C) 1998, 2000, 2002, 2004 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <dlfcn.h>
  22 #include <elf.h>
  23 #include <ldsodefs.h>
  24
  25 /* This is the map for the shared object we profile.  It is defined here
  26    only because we test for this value being NULL or not.  */
  27
  28
  29 void
  30 _dl_mcount_wrapper (void *selfpc)
  31 {
  32   GLRO(dl_mcount) ((ElfW(Addr)) RETURN_ADDRESS (0), (ElfW(Addr)) selfpc);
  33 }
  34
  35
  36 void
  37 _dl_mcount_wrapper_check (void *selfpc)
  38 {
  39   if (GL(dl_profile_map) != NULL)
  40     GLRO(dl_mcount) ((ElfW(Addr)) RETURN_ADDRESS (0), (ElfW(Addr)) selfpc);
  41 }
  42 libc_hidden_def (_dl_mcount_wrapper_check)