/* | |
FreeRTOS V6.0.2 - Copyright (C) 2010 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* If you are: * | |
* * | |
* + New to FreeRTOS, * | |
* + Wanting to learn FreeRTOS or multitasking in general quickly * | |
* + Looking for basic training, * | |
* + Wanting to improve your FreeRTOS skills and productivity * | |
* * | |
* then take a look at the FreeRTOS eBook * | |
* * | |
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" * | |
* http://www.FreeRTOS.org/Documentation * | |
* * | |
* A pdf reference manual is also available. Both are usually delivered * | |
* to your inbox within 20 minutes to two hours when purchased between 8am * | |
* and 8pm GMT (although please allow up to 24 hours in case of * | |
* exceptional circumstances). 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 exception 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() \ | |
{ \ | |
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \ | |
\ | |
/* 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() \ | |
{ \ | |
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \ | |
\ | |
/* 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() \ | |
{ \ | |
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \ | |
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() \ | |
{ \ | |
extern void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName ); \ | |
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 */ | |