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180 lines
9 KiB
C
180 lines
9 KiB
C
/*
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FreeRTOS V8.1.2 - Copyright (C) 2014 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that has become a de facto standard. *
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* *
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* Help yourself get started quickly and support the FreeRTOS *
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* project by purchasing a FreeRTOS tutorial book, reference *
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* manual, or both from: http://www.FreeRTOS.org/Documentation *
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* *
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* Thank you! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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>>! NOTE: The modification to the GPL is included to allow you to !<<
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>>! distribute a combined work that includes FreeRTOS without being !<<
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>>! obliged to provide the source code for proprietary components !<<
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>>! outside of the FreeRTOS kernel. !<<
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available from the following
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link: http://www.freertos.org/a00114.html
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong?" *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd. contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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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 == 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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/* 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 > 0 */
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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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\
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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 taskSECOND_CHECK_FOR_STACK_OVERFLOW() \
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{ \
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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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/* 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( ( 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 taskSECOND_CHECK_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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#endif /* STACK_MACROS_H */
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