text: /* Copyright (C) 2008-2016 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library; if not, see
     <http://www.gnu.org/licenses/>.  */
  
  #include <errno.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include <ucontext.h>
  #include <tst-stack-align.h>
  
  ucontext_t ucp, ucp2;
  char st1[262144] __attribute__((aligned (16)));
  
  void
  cf (int i, int j)
  {
    if (i != 78 || j != 274)
      {
        printf ("i %d j %d\n", i, j);
        exit (1);
      }
    else if (TEST_STACK_ALIGN ())
      {
        puts ("insufficiently aligned stack");
        exit (2);
      }
  }
  
  int
  do_test (void)
  {
    for (size_t j = 32; j < 64; j += sizeof (long))
      {
        if (getcontext (&ucp) != 0)
  	{
  	  if (errno == ENOSYS)
  	    {
  	      puts ("context handling not supported");
  	      return 0;
  	    }
  
  	  puts ("getcontext failed");
  	  return 1;
  	}
        ucp.uc_link = &ucp2;
        ucp.uc_stack.ss_sp = st1;
        ucp.uc_stack.ss_size = sizeof (st1) - j;
        memset (&st1[sizeof (st1) - j], 0x55, j);
        makecontext (&ucp, (void (*) (void)) cf, 2, 78, 274);
        if (swapcontext (&ucp2, &ucp) != 0)
  	{
  	  puts ("setcontext failed");
  	  return 1;
  	}
  
        for (size_t i = j; i > 0; i--)
  	if (st1[sizeof (st1) - j + i - 1] != 0x55)
  	  { printf ("fail %zd %zd\n", i, j); break; }
      }
  
    return 0;
  }
  
  #define TEST_FUNCTION do_test ()
  #include "../test-skeleton.c"
  