Subversion Repositories openrisc_2011-10-31

/*  task1.c

 *

 *  This set of three tasks do some simple task switching for about

 *  15 seconds and then call a routine to "blow the stack".

 *

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: blow.c,v 1.2 2001-09-27 12:02:13 chris Exp $

 */

#include <rtems.h>

void b() {}

void blow_stack( void )

{

  volatile unsigned32 *low, *high;

  unsigned char *area;

b();

  /*

   *  Destroy the first and last 16 bytes of our stack... Hope it

   *  does not cause problems :)

   */

 area = (unsigned char *)_Thread_Executing->Start.Initial_stack.area;

 low  = (volatile unsigned32 *) (area + HEAP_OVERHEAD);

 high = (volatile unsigned32 *)

            (area + _Thread_Executing->Start.Initial_stack.size - 16);

 low[0] = 0x11111111;

 low[1] = 0x22222222;

 low[2] = 0x33333333;

 low[3] = 0x44444444;

 high[0] = 0x55555555;

 high[1] = 0x66666666;

 high[2] = 0x77777777;

 high[3] = 0x88888888;

}