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- /*
- * FreeRTOS Kernel V10.4.6
- * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
- *
- * SPDX-License-Identifier: MIT
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
- * the Software, and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
- * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
- * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * https://www.FreeRTOS.org
- * https://github.com/FreeRTOS
- *
- */
- #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.
- */
- /*-----------------------------------------------------------*/
- /*
- * portSTACK_LIMIT_PADDING is a number of extra words to consider to be in
- * use on the stack.
- */
- #ifndef portSTACK_LIMIT_PADDING
- #define portSTACK_LIMIT_PADDING 0
- #endif
- #if ( ( configCHECK_FOR_STACK_OVERFLOW == 1 ) && ( portSTACK_GROWTH < 0 ) )
- /* Only the current stack state is to be checked. */
- #define taskCHECK_FOR_STACK_OVERFLOW() \
- { \
- /* Is the currently saved stack pointer within the stack limit? */ \
- if( pxCurrentTCB->pxTopOfStack <= pxCurrentTCB->pxStack + portSTACK_LIMIT_PADDING ) \
- { \
- vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
- } \
- }
- #endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
- /*-----------------------------------------------------------*/
- #if ( ( configCHECK_FOR_STACK_OVERFLOW == 1 ) && ( portSTACK_GROWTH > 0 ) )
- /* Only the current stack state is to be checked. */
- #define taskCHECK_FOR_STACK_OVERFLOW() \
- { \
- \
- /* Is the currently saved stack pointer within the stack limit? */ \
- if( pxCurrentTCB->pxTopOfStack >= pxCurrentTCB->pxEndOfStack - portSTACK_LIMIT_PADDING ) \
- { \
- vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
- } \
- }
- #endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
- /*-----------------------------------------------------------*/
- #if ( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH < 0 ) )
- #define taskCHECK_FOR_STACK_OVERFLOW() \
- { \
- const uint32_t * const pulStack = ( uint32_t * ) pxCurrentTCB->pxStack; \
- const uint32_t ulCheckValue = ( uint32_t ) 0xa5a5a5a5; \
- \
- if( ( pulStack[ 0 ] != ulCheckValue ) || \
- ( pulStack[ 1 ] != ulCheckValue ) || \
- ( pulStack[ 2 ] != ulCheckValue ) || \
- ( pulStack[ 3 ] != ulCheckValue ) ) \
- { \
- vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
- } \
- }
- #endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
- /*-----------------------------------------------------------*/
- #if ( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH > 0 ) )
- #define taskCHECK_FOR_STACK_OVERFLOW() \
- { \
- int8_t * pcEndOfStack = ( int8_t * ) pxCurrentTCB->pxEndOfStack; \
- static const uint8_t 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( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
- } \
- }
- #endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
- /*-----------------------------------------------------------*/
- /* Remove stack overflow macro if not being used. */
- #ifndef taskCHECK_FOR_STACK_OVERFLOW
- #define taskCHECK_FOR_STACK_OVERFLOW()
- #endif
- #endif /* STACK_MACROS_H */
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