elf/tst-alignmod2.c

   1 /* Copyright (C) 2003, 2005 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <stdbool.h>
  21 #include <stdio.h>
  22 #include <tst-stack-align.h>
  23 #include <unistd.h>
  24
  25 static int res, *fdp;
  26 static bool *test_destructorsp;
  27
  28 static void __attribute__((constructor))
  29 con (void)
  30 {
  31   res = TEST_STACK_ALIGN () ? -1 : 1;
  32 }
  33
  34 void
  35 in_dso (int *result, bool *test_destructors, int *fd)
  36 {
  37   if (!res)
  38     {
  39       puts ("constructor has not been run");
  40       *result = 1;
  41     }
  42   else if (res != 1)
  43     {
  44       puts ("constructor has been run without sufficient alignment");
  45       *result = 1;
  46     }
  47
  48   test_destructorsp = test_destructors;
  49   fdp = fd;
  50 }
  51
  52 static void __attribute__((destructor))
  53 des (void)
  54 {
  55   if (!test_destructorsp || !*test_destructorsp)
  56     return;
  57
  58   char c = TEST_STACK_ALIGN () ? 'D' : 'C';
  59   write (*fdp, &c, 1);
  60 }