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
  28 static int
  29 f (void *arg)
  30 {
  31   bool ok = true;
  32
  33   if (TEST_STACK_ALIGN ())
  34     ok = false;
  35
  36   return ok ? 0 : 1;
  37 }
  38
  39 static int
  40 do_test (void)
  41 {
  42   bool ok = true;
  43
  44   puts ("in main");
  45
  46   if (TEST_STACK_ALIGN ())
  47     ok = false;
  48
  49 #ifdef __ia64__
  50   extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
  51                        size_t __child_stack_size, int __flags,
  52                        void *__arg, ...);
  53   char st[256 * 1024];
  54   pid_t p = __clone2 (f, st, sizeof (st), 0, 0);
  55 #else
  56   char st[128 * 1024] __attribute__ ((aligned));
  57 # if _STACK_GROWS_DOWN
  58   pid_t p = clone (f, st + sizeof (st), 0, 0);
  59 # elif _STACK_GROWS_UP
  60   pid_t p = clone (f, st, 0, 0);
  61 # else
  62 #  error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
  63 # endif
  64 #endif
  65   if (p == -1)
  66     {
  67       printf("clone failed: %m\n");
  68       return 1;
  69     }
  70
  71   int e;
  72   if (waitpid (p, &e, __WCLONE) != p)
  73     {
  74       puts ("waitpid failed");
  75       kill (p, SIGKILL);
  76       return 1;
  77     }
  78   if (!WIFEXITED (e))
  79     {
  80       if (WIFSIGNALED (e))
  81         printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
  82       else
  83         puts ("did not terminate correctly");
  84       return 1;
  85     }
  86   if (WEXITSTATUS (e) != 0)
  87     ok = false;
  88
  89   return ok ? 0 : 1;
  90 }
  91
  92 #define TEST_FUNCTION do_test ()
  93 #include "../test-skeleton.c"