/* FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd. VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. *************************************************************************** * * * FreeRTOS provides completely free yet professionally developed, * * robust, strictly quality controlled, supported, and cross * * platform software that has become a de facto standard. * * * * Help yourself get started quickly and support the FreeRTOS * * project by purchasing a FreeRTOS tutorial book, reference * * manual, or both from: http://www.FreeRTOS.org/Documentation * * * * Thank you! * * * *************************************************************************** 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 modification 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. Full license text is available from the following link: http://www.freertos.org/a00114.html 1 tab == 4 spaces! *************************************************************************** * * * Having a problem? Start by reading the FAQ "My application does * * not run, what could be wrong?" * * * * http://www.FreeRTOS.org/FAQHelp.html * * * *************************************************************************** http://www.FreeRTOS.org - Documentation, books, training, latest versions, license and Real Time Engineers Ltd. contact details. http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, including FreeRTOS+Trace - an indispensable productivity tool, a DOS compatible FAT file system, and our tiny thread aware UDP/IP stack. http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS licenses offer ticketed support, indemnification and middleware. http://www.SafeRTOS.com - High Integrity Systems also provide a safety engineered and independently SIL3 certified version for use in safety and mission critical applications that require provable dependability. 1 tab == 4 spaces! */ #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() \ { \ /* 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() \ { \ \ /* 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() \ { \ 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() \ { \ 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 */