gdb/testsuite/gdb.base/gnu-ifunc-lib.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2009-2012 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 extern volatile int gnu_ifunc_initialized;
  19 extern int init_stub (int arg);
  20 extern int final (int arg);
  21
  22 typedef int (*final_t) (int arg);
  23
  24 asm (".type gnu_ifunc, @gnu_indirect_function");
  25
  26 final_t
  27 gnu_ifunc (void)
  28 {
  29   if (! gnu_ifunc_initialized)
  30     return init_stub;
  31   else
  32     return final;
  33 }