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   puts ("in f");
  35
  36   if (TEST_STACK_ALIGN ())
  37     ok = false;
  38
  39   return ok ? 0 : 1;
  40 }
  41
  42 static int
  43 do_test (void)
  44 {
  45   bool ok = true;
  46
  47   puts ("in main");
  48
  49   if (TEST_STACK_ALIGN ())
  50     ok = false;
  51
  52 #ifdef __ia64__
  53   extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
  54                        size_t __child_stack_size, int __flags,
  55                        void *__arg, ...);
  56   char st[256 * 1024];
  57   pid_t p = __clone2 (f, st, sizeof (st), 0, 0);
  58 #else
  59   char st[128 * 1024] __attribute__ ((aligned));
  60 # if _STACK_GROWS_DOWN
  61   pid_t p = clone (f, st + sizeof (st), 0, 0);
  62 # elif _STACK_GROWS_UP
  63   pid_t p = clone (f, st, 0, 0);
  64 # else
  65 #  error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
  66 # endif
  67 #endif
  68   if (p == -1)
  69     {
  70       printf("clone failed: %m\n");
  71       return 1;
  72     }
  73
  74   int e;
  75   if (waitpid (p, &e, __WCLONE) != p)
  76     {
  77       puts ("waitpid failed");
  78       kill (p, SIGKILL);
  79       return 1;
  80     }
  81   if (!WIFEXITED (e))
  82     {
  83       if (WIFSIGNALED (e))
  84         printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
  85       else
  86         puts ("did not terminate correctly");
  87       return 1;
  88     }
  89   if (WEXITSTATUS (e) != 0)
  90     ok = false;
  91
  92   return ok ? 0 : 1;
  93 }
  94
  95 #define TEST_FUNCTION do_test ()
  96 #include "../test-skeleton.c"