diff options
Diffstat (limited to 'libraries/FreeRTOS/utility/StackMacros.h')
| -rwxr-xr-x | libraries/FreeRTOS/utility/StackMacros.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/libraries/FreeRTOS/utility/StackMacros.h b/libraries/FreeRTOS/utility/StackMacros.h new file mode 100755 index 0000000..547a58c --- /dev/null +++ b/libraries/FreeRTOS/utility/StackMacros.h @@ -0,0 +1,174 @@ +/* + FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd. + + + FreeRTOS supports many tools and architectures. V7.0.0 is sponsored by: + Atollic AB - Atollic provides professional embedded systems development + tools for C/C++ development, code analysis and test automation. + See http://www.atollic.com + + + *************************************************************************** + * * + * FreeRTOS tutorial books are available in pdf and paperback. * + * Complete, revised, and edited pdf reference manuals are also * + * available. * + * * + * Purchasing FreeRTOS documentation will not only help you, by * + * ensuring you get running as quickly as possible and with an * + * in-depth knowledge of how to use FreeRTOS, it will also help * + * the FreeRTOS project to continue with its mission of providing * + * professional grade, cross platform, de facto standard solutions * + * for microcontrollers - completely free of charge! * + * * + * >>> See http://www.FreeRTOS.org/Documentation for details. <<< * + * * + * Thank you for using FreeRTOS, and thank you for your support! * + * * + *************************************************************************** + + + 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. See the GNU General Public License for + more details. You should have received a copy of the GNU General Public + License and the FreeRTOS license exception along with FreeRTOS; if not it + can be viewed here: http://www.freertos.org/a00114.html and also obtained + by writing to Richard Barry, contact details for whom are available on the + FreeRTOS WEB site. + + 1 tab == 4 spaces! + + http://www.FreeRTOS.org - Documentation, latest information, license and + contact details. + + http://www.SafeRTOS.com - A version that is certified for use in safety + critical systems. + + http://www.OpenRTOS.com - Commercial support, development, porting, + licensing and training services. +*/ + +#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 */ + |