130 lines
5.7 KiB
C
130 lines
5.7 KiB
C
/*
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* FreeRTOS Kernel V10.0.1
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* Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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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 == 1 ) && ( portSTACK_GROWTH < 0 ) )
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/* Only the current stack state is to be checked. */
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#define taskCHECK_FOR_STACK_OVERFLOW() \
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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( ( TaskHandle_t ) 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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/* Only the current stack state is to be checked. */
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#define taskCHECK_FOR_STACK_OVERFLOW() \
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{ \
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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( ( TaskHandle_t ) 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 taskCHECK_FOR_STACK_OVERFLOW() \
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{ \
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const uint32_t * const pulStack = ( uint32_t * ) pxCurrentTCB->pxStack; \
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const uint32_t ulCheckValue = ( uint32_t ) 0xa5a5a5a5; \
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\
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if( ( pulStack[ 0 ] != ulCheckValue ) || \
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( pulStack[ 1 ] != ulCheckValue ) || \
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( pulStack[ 2 ] != ulCheckValue ) || \
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( pulStack[ 3 ] != ulCheckValue ) ) \
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{ \
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vApplicationStackOverflowHook( ( TaskHandle_t ) 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 taskCHECK_FOR_STACK_OVERFLOW() \
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{ \
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int8_t *pcEndOfStack = ( int8_t * ) pxCurrentTCB->pxEndOfStack; \
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static const uint8_t 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( ( TaskHandle_t ) 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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/* Remove stack overflow macro if not being used. */
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#ifndef taskCHECK_FOR_STACK_OVERFLOW
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#define taskCHECK_FOR_STACK_OVERFLOW()
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#endif
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#endif /* STACK_MACROS_H */
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