/* | |
* FreeRTOS Kernel V10.2.1 | |
* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
* | |
* 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. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 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 == 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 ) \ | |
{ \ | |
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 ) \ | |
{ \ | |
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 */ | |