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glibc  2.9
tst-alignmod2.c
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00001 /* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <stdbool.h>
00021 #include <stdio.h>
00022 #include <tst-stack-align.h>
00023 #include <unistd.h>
00024 
00025 static int res, *fdp;
00026 static bool *test_destructorsp;
00027 
00028 static void __attribute__((constructor))
00029 con (void)
00030 {
00031   res = TEST_STACK_ALIGN () ? -1 : 1;
00032 }
00033 
00034 void
00035 in_dso (int *result, bool *test_destructors, int *fd)
00036 {
00037   if (!res)
00038     {
00039       puts ("constructor has not been run");
00040       *result = 1;
00041     }
00042   else if (res != 1)
00043     {
00044       puts ("constructor has been run without sufficient alignment");
00045       *result = 1;
00046     }
00047 
00048   test_destructorsp = test_destructors;
00049   fdp = fd;
00050 }
00051 
00052 static void __attribute__((destructor))
00053 des (void)
00054 {
00055   if (!test_destructorsp || !*test_destructorsp)
00056     return;
00057 
00058   char c = TEST_STACK_ALIGN () ? 'D' : 'C';
00059   write (*fdp, &c, 1);
00060 }