elf/dl-profstub.c

   1 /* Helper definitions for profiling of shared libraries.
   2    Copyright (C) 1998 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 Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    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    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <dlfcn.h>
  22 #include <elf.h>
  23 #include <elf/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 extern struct link_map *_dl_profile_map;
  28
  29
  30 void
  31 _dl_mcount_wrapper (ElfW(Addr) selfpc)
  32 {
  33   _dl_mcount ((ElfW(Addr)) __builtin_return_address (0), selfpc);
  34 }
  35
  36
  37 void
  38 _dl_mcount_wrapper_check (void *selfpc)
  39 {
  40   if (_dl_profile_map != NULL)
  41     _dl_mcount ((ElfW(Addr)) __builtin_return_address (0),
  42                 (ElfW(Addr)) selfpc);
  43 }