elf/tst-alignmod.c

   1 /* Copyright (C) 2003-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
   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 <stdio.h>
  20 #include <tst-stack-align.h>
  21
  22 static int res, *resp;
  23
  24 static void __attribute__((constructor))
  25 con (void)
  26 {
  27   res = TEST_STACK_ALIGN () ? -1 : 1;
  28 }
  29
  30 void
  31 in_dso (int *result)
  32 {
  33   if (!res)
  34     {
  35       puts ("constructor has not been run");
  36       *result = 1;
  37     }
  38   else if (res != 1)
  39     {
  40       puts ("constructor has been run without sufficient alignment");
  41       *result = 1;
  42     }
  43
  44   resp = result;
  45 }
  46
  47 static void __attribute__((destructor))
  48 des (void)
  49 {
  50   if (TEST_STACK_ALIGN ())
  51     *resp = 1;
  52 }