nptl/tst-align2.c

   1 /* Copyright (C) 2004, 2007 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <sched.h>
  20 #include <stdbool.h>
  21 #include <stdint.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <sys/wait.h>
  25 #include <unistd.h>
  26 #include <tst-stack-align.h>
  27 #include <stackinfo.h>
  28
  29 static int
  30 f (void *arg)
  31 {
  32   bool ok = true;
  33
  34   if (TEST_STACK_ALIGN ())
  35     ok = false;
  36
  37   return ok ? 0 : 1;
  38 }
  39
  40 static int
  41 do_test (void)
  42 {
  43   bool ok = true;
  44
  45   puts ("in main");
  46
  47   if (TEST_STACK_ALIGN ())
  48     ok = false;
  49
  50 #ifdef __ia64__
  51   extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
  52                        size_t __child_stack_size, int __flags,
  53                        void *__arg, ...);
  54   char st[256 * 1024];
  55   pid_t p = __clone2 (f, st, sizeof (st), 0, 0);
  56 #else
  57   char st[128 * 1024] __attribute__ ((aligned));
  58 # if _STACK_GROWS_DOWN
  59   pid_t p = clone (f, st + sizeof (st), 0, 0);
  60 # elif _STACK_GROWS_UP
  61   pid_t p = clone (f, st, 0, 0);
  62 # else
  63 #  error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
  64 # endif
  65 #endif
  66   if (p == -1)
  67     {
  68       printf("clone failed: %m\n");
  69       return 1;
  70     }
  71
  72   int e;
  73   if (waitpid (p, &e, __WCLONE) != p)
  74     {
  75       puts ("waitpid failed");
  76       kill (p, SIGKILL);
  77       return 1;
  78     }
  79   if (!WIFEXITED (e))
  80     {
  81       if (WIFSIGNALED (e))
  82         printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
  83       else
  84         puts ("did not terminate correctly");
  85       return 1;
  86     }
  87   if (WEXITSTATUS (e) != 0)
  88     ok = false;
  89
  90   return ok ? 0 : 1;
  91 }
  92
  93 #define TEST_FUNCTION do_test ()
  94 #include "../test-skeleton.c"