source: rtems/testsuites/libtests/stackchk/blow.c @ 1947449

5
Last change on this file since 1947449 was 5f31bbe, checked in by Sebastian Huber <sebastian.huber@…>, on 06/25/15 at 12:22:31

libmisc: Simplify <rtems/stackchk.h>

Drop the <rtems/score/percpu.h> include since this file exposes a lot of
implementation details.

  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*  task1.c
2 *
3 *  This set of three tasks do some simple task switching for about
4 *  15 seconds and then call a routine to "blow the stack".
5 *
6 *  COPYRIGHT (c) 1989-2012.
7 *  On-Line Applications Research Corporation (OAR).
8 *
9 *  The license and distribution terms for this file may be
10 *  found in the file LICENSE in this distribution or at
11 *  http://www.rtems.org/license/LICENSE.
12 */
13
14#ifdef HAVE_CONFIG_H
15#include "config.h"
16#endif
17
18#include <rtems.h>
19#include <rtems/stackchk.h>
20#include <rtems/score/percpu.h>
21
22/* forward declarations to avoid warnings */
23void b(void);
24void blow_stack(void);
25
26void b(void)
27{
28}
29
30void blow_stack(void)
31{
32  volatile uint32_t   *low, *high;
33  unsigned char *area;
34  Thread_Control *executing;
35
36  b();
37
38  /*
39   *  Destroy the first and last 16 bytes of our stack... Hope it
40   *  does not cause problems :)
41   */
42
43  executing = _Thread_Get_executing();
44  area = (unsigned char *)executing->Start.Initial_stack.area;
45
46  /* Look in the stack checker implementation for this magic offset */
47  low  = (volatile uint32_t *) \
48     (area + sizeof(Heap_Block) - HEAP_BLOCK_HEADER_SIZE);
49  high = (volatile uint32_t *)
50             (area + executing->Start.Initial_stack.size - 16);
51
52  low[0] = 0x11111111;
53  low[1] = 0x22222222;
54  low[2] = 0x33333333;
55  low[3] = 0x44444444;
56
57  high[0] = 0x55555555;
58  high[1] = 0x66666666;
59  high[2] = 0x77777777;
60  high[3] = 0x88888888;
61  rtems_stack_checker_report_usage();
62}
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