174 lines
8.8 KiB
C
174 lines
8.8 KiB
C
/*
|
|
FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
|
|
|
|
***************************************************************************
|
|
* *
|
|
* If you are: *
|
|
* *
|
|
* + New to FreeRTOS, *
|
|
* + Wanting to learn FreeRTOS or multitasking in general quickly *
|
|
* + Looking for basic training, *
|
|
* + Wanting to improve your FreeRTOS skills and productivity *
|
|
* *
|
|
* then take a look at the FreeRTOS books - available as PDF or paperback *
|
|
* *
|
|
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
|
|
* http://www.FreeRTOS.org/Documentation *
|
|
* *
|
|
* A pdf reference manual is also available. Both are usually delivered *
|
|
* to your inbox within 20 minutes to two hours when purchased between 8am *
|
|
* and 8pm GMT (although please allow up to 24 hours in case of *
|
|
* exceptional circumstances). Thank you for your support! *
|
|
* *
|
|
***************************************************************************
|
|
|
|
This file is part of the FreeRTOS distribution.
|
|
|
|
FreeRTOS is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License (version 2) as published by the
|
|
Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
|
|
***NOTE*** The exception to the GPL is included to allow you to distribute
|
|
a combined work that includes FreeRTOS without being obliged to provide the
|
|
source code for proprietary components outside of the FreeRTOS kernel.
|
|
FreeRTOS 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 General Public License for
|
|
more details. You should have received a copy of the GNU General Public
|
|
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
|
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
|
by writing to Richard Barry, contact details for whom are available on the
|
|
FreeRTOS WEB site.
|
|
|
|
1 tab == 4 spaces!
|
|
|
|
http://www.FreeRTOS.org - Documentation, latest information, license and
|
|
contact details.
|
|
|
|
http://www.SafeRTOS.com - A version that is certified for use in safety
|
|
critical systems.
|
|
|
|
http://www.OpenRTOS.com - Commercial support, development, porting,
|
|
licensing and training services.
|
|
*/
|
|
|
|
#ifndef STACK_MACROS_H
|
|
#define STACK_MACROS_H
|
|
|
|
/*
|
|
* Call the stack overflow hook function if the stack of the task being swapped
|
|
* out is currently overflowed, or looks like it might have overflowed in the
|
|
* past.
|
|
*
|
|
* Setting configCHECK_FOR_STACK_OVERFLOW to 1 will cause the macro to check
|
|
* the current stack state only - comparing the current top of stack value to
|
|
* the stack limit. Setting configCHECK_FOR_STACK_OVERFLOW to greater than 1
|
|
* will also cause the last few stack bytes to be checked to ensure the value
|
|
* to which the bytes were set when the task was created have not been
|
|
* overwritten. Note this second test does not guarantee that an overflowed
|
|
* stack will always be recognised.
|
|
*/
|
|
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( configCHECK_FOR_STACK_OVERFLOW == 0 )
|
|
|
|
/* FreeRTOSConfig.h is not set to check for stack overflows. */
|
|
#define taskFIRST_CHECK_FOR_STACK_OVERFLOW()
|
|
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW()
|
|
|
|
#endif /* configCHECK_FOR_STACK_OVERFLOW == 0 */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( configCHECK_FOR_STACK_OVERFLOW == 1 )
|
|
|
|
/* FreeRTOSConfig.h is only set to use the first method of
|
|
overflow checking. */
|
|
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW()
|
|
|
|
#endif
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( ( configCHECK_FOR_STACK_OVERFLOW > 0 ) && ( portSTACK_GROWTH < 0 ) )
|
|
|
|
/* Only the current stack state is to be checked. */
|
|
#define taskFIRST_CHECK_FOR_STACK_OVERFLOW() \
|
|
{ \
|
|
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \
|
|
\
|
|
/* Is the currently saved stack pointer within the stack limit? */ \
|
|
if( pxCurrentTCB->pxTopOfStack <= pxCurrentTCB->pxStack ) \
|
|
{ \
|
|
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
|
|
} \
|
|
}
|
|
|
|
#endif /* configCHECK_FOR_STACK_OVERFLOW > 0 */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( ( configCHECK_FOR_STACK_OVERFLOW > 0 ) && ( portSTACK_GROWTH > 0 ) )
|
|
|
|
/* Only the current stack state is to be checked. */
|
|
#define taskFIRST_CHECK_FOR_STACK_OVERFLOW() \
|
|
{ \
|
|
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \
|
|
\
|
|
/* Is the currently saved stack pointer within the stack limit? */ \
|
|
if( pxCurrentTCB->pxTopOfStack >= pxCurrentTCB->pxEndOfStack ) \
|
|
{ \
|
|
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
|
|
} \
|
|
}
|
|
|
|
#endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH < 0 ) )
|
|
|
|
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW() \
|
|
{ \
|
|
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \
|
|
static const unsigned char ucExpectedStackBytes[] = { tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE }; \
|
|
\
|
|
\
|
|
/* Has the extremity of the task stack ever been written over? */ \
|
|
if( memcmp( ( void * ) pxCurrentTCB->pxStack, ( void * ) ucExpectedStackBytes, sizeof( ucExpectedStackBytes ) ) != 0 ) \
|
|
{ \
|
|
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
|
|
} \
|
|
}
|
|
|
|
#endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH > 0 ) )
|
|
|
|
#define taskSECOND_CHECK_FOR_STACK_OVERFLOW() \
|
|
{ \
|
|
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \
|
|
char *pcEndOfStack = ( char * ) pxCurrentTCB->pxEndOfStack; \
|
|
static const unsigned char ucExpectedStackBytes[] = { tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
|
|
tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE }; \
|
|
\
|
|
\
|
|
pcEndOfStack -= sizeof( ucExpectedStackBytes ); \
|
|
\
|
|
/* Has the extremity of the task stack ever been written over? */ \
|
|
if( memcmp( ( void * ) pcEndOfStack, ( void * ) ucExpectedStackBytes, sizeof( ucExpectedStackBytes ) ) != 0 ) \
|
|
{ \
|
|
vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
|
|
} \
|
|
}
|
|
|
|
#endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
|
|
/*-----------------------------------------------------------*/
|
|
|
|
#endif /* STACK_MACROS_H */
|
|
|