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/*  internal.h

 *

 *  This include file contains internal information

 *  for the RTEMS stack checker.

 *

 *  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: internal.h,v 1.2 2001-09-27 12:01:46 chris Exp $

 */

#ifndef __INTERNAL_STACK_CHECK_h

#define __INTERNAL_STACK_CHECK_h

#ifdef __cplusplus

extern "C" {

#endif

/*

 *  This structure is used to fill in and compare the "end of stack"

 *  marker pattern.

 *  pattern area must be a multiple of 4 words.

 */

#ifdef CPU_STACK_CHECK_SIZE

#define PATTERN_SIZE_WORDS      (((CPU_STACK_CHECK_SIZE / 4) + 3) & ~0x3)

#else

#define PATTERN_SIZE_WORDS      (4)

#endif

#define PATTERN_SIZE_BYTES      (PATTERN_SIZE_WORDS * sizeof(unsigned32))

typedef struct {

   unsigned32  pattern[ PATTERN_SIZE_WORDS ];

} Stack_check_Control;

/*

 *  The pattern used to fill the entire stack.

 */

#define BYTE_PATTERN 0xA5

#define U32_PATTERN 0xA5A5A5A5

/*

 *  Stack_check_Create_extension

 */

boolean Stack_check_Create_extension(

  Thread_Control *running,

  Thread_Control *the_thread

);

/*

 *  Stack_check_Begin_extension

 */

void Stack_check_Begin_extension(

  Thread_Control *the_thread

);

/*

 *  Stack_check_Switch_extension

 */

void Stack_check_Switch_extension(

  Thread_Control *running,

  Thread_Control *heir

);

/*

 *  Stack_check_Fatal_extension

 */

void Stack_check_Fatal_extension(

    Internal_errors_Source  source,

    boolean                 is_internal,

    unsigned32              status

);

/*

 *  Stack_check_Dump_usage

 */

void Stack_check_Dump_usage( void );

#ifdef __cplusplus

}

#endif

#endif

/* end of include file */