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170 lines
8.3 KiB
C
170 lines
8.3 KiB
C
/*
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FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.
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This file is part of the FreeRTOS.org distribution.
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FreeRTOS.org is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FreeRTOS.org is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FreeRTOS.org; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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A special exception to the GPL can be applied should you wish to distribute
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a combined work that includes FreeRTOS.org, without being obliged to provide
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the source code for any proprietary components. See the licensing section
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of http://www.FreeRTOS.org for full details of how and when the exception
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can be applied.
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***************************************************************************
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***************************************************************************
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* *
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* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
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* and even write all or part of your application on your behalf. *
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* See http://www.OpenRTOS.com for details of the services we provide to *
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* expedite your project. *
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* *
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***************************************************************************
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***************************************************************************
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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#ifndef STACK_MACROS_H
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#define STACK_MACROS_H
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/*
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* Call the stack overflow hook function if the stack of the task being swapped
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* out is currently overflowed, or looks like it might have overflowed in the
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* past.
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*
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* Setting configCHECK_FOR_STACK_OVERFLOW to 1 will cause the macro to check
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* the current stack state only - comparing the current top of stack value to
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* the stack limit. Setting configCHECK_FOR_STACK_OVERFLOW to greater than 1
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* will also cause the last few stack bytes to be checked to ensure the value
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* to which the bytes were set when the task was created have not been
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* overwritten. Note this second test does not guarantee that an overflowed
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* stack will always be recognised.
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*/
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/*-----------------------------------------------------------*/
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#if( configCHECK_FOR_STACK_OVERFLOW == 0 )
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/* FreeRTOSConfig.h is not set to check for stack overflows. */
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#define taskFIRST_CHECK_FOR_STACK_OVERFLOW()
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#define taskSECOND_CHECK_FOR_STACK_OVERFLOW()
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#endif /* configCHECK_FOR_STACK_OVERFLOW == 0 */
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/*-----------------------------------------------------------*/
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#if( configCHECK_FOR_STACK_OVERFLOW == 1 )
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/* FreeRTOSConfig.h is only set to use the first method of
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overflow checking. */
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#define taskSECOND_CHECK_FOR_STACK_OVERFLOW()
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#endif
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/*-----------------------------------------------------------*/
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#if( ( configCHECK_FOR_STACK_OVERFLOW > 0 ) && ( portSTACK_GROWTH < 0 ) )
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/* Only the current stack state is to be checked. */
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#define taskFIRST_CHECK_FOR_STACK_OVERFLOW() \
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{ \
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extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed portCHAR *pcTaskName ); \
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\
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/* Is the currently saved stack pointer within the stack limit? */ \
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if( pxCurrentTCB->pxTopOfStack <= pxCurrentTCB->pxStack ) \
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{ \
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vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
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} \
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}
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#endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
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/*-----------------------------------------------------------*/
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#if( ( configCHECK_FOR_STACK_OVERFLOW > 0 ) && ( portSTACK_GROWTH > 0 ) )
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/* Only the current stack state is to be checked. */
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#define taskFIRST_CHECK_FOR_STACK_OVERFLOW() \
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{ \
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extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed portCHAR *pcTaskName ); \
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\
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/* Is the currently saved stack pointer within the stack limit? */ \
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if( pxCurrentTCB->pxTopOfStack >= pxCurrentTCB->pxEndOfStack ) \
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{ \
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vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
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} \
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}
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#endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
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/*-----------------------------------------------------------*/
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#if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH < 0 ) )
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#define taskSECOND_CHECK_FOR_STACK_OVERFLOW() \
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{ \
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extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed portCHAR *pcTaskName ); \
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static const unsigned portCHAR ucExpectedStackBytes[] = { tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE }; \
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\
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\
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/* Has the extremity of the task stack ever been written over? */ \
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if( memcmp( ( void * ) pxCurrentTCB->pxStack, ( void * ) ucExpectedStackBytes, sizeof( ucExpectedStackBytes ) ) != 0 ) \
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{ \
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vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
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} \
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}
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#endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
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/*-----------------------------------------------------------*/
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#if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH > 0 ) )
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#define taskSECOND_CHECK_FOR_STACK_OVERFLOW() \
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{ \
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extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed portCHAR *pcTaskName ); \
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portCHAR *pcEndOfStack = ( portCHAR * ) pxCurrentTCB->pxEndOfStack; \
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static const unsigned portCHAR ucExpectedStackBytes[] = { tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
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tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE }; \
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\
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\
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pcEndOfStack -= sizeof( ucExpectedStackBytes ); \
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\
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/* Has the extremity of the task stack ever been written over? */ \
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if( memcmp( ( void * ) pcEndOfStack, ( void * ) ucExpectedStackBytes, sizeof( ucExpectedStackBytes ) ) != 0 ) \
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{ \
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vApplicationStackOverflowHook( ( xTaskHandle ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
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} \
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}
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#endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
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/*-----------------------------------------------------------*/
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#endif /* STACK_MACROS_H */
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