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Arduino_FreeRTOS_Library/src/stack_macros.h at master · feilipu/Arduino_FreeRTOS_Library · GitHub
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/*
* FreeRTOS Kernel V11.1.0
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* SPDX-License-Identifier: MIT
*
* 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.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
#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.
*/
/*-----------------------------------------------------------*/
/*
* portSTACK_LIMIT_PADDING is a number of extra words to consider to be in
* use on the stack.
*/
#ifndef
portSTACK_LIMIT_PADDING
#define
portSTACK_LIMIT_PADDING
0
#endif
#if
( (
configCHECK_FOR_STACK_OVERFLOW
==
1
)
&&
(
portSTACK_GROWTH
<
0
) )
/* Only the current stack state is to be checked. */
#define
taskCHECK_FOR_STACK_OVERFLOW
() \
do { \
/* Is the currently saved stack pointer within the stack limit? */
\
if
(
pxCurrentTCB
->
pxTopOfStack
<=
pxCurrentTCB
->
pxStack
+
portSTACK_LIMIT_PADDING
) \
{ \
char
*
pcOverflowTaskName
=
pxCurrentTCB
->
pcTaskName
; \
vApplicationStackOverflowHook
( (
TaskHandle_t
)
pxCurrentTCB
,
pcOverflowTaskName
); \
} \
}
while
(
0
)
#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
() \
do { \
\
/* Is the currently saved stack pointer within the stack limit? */
\
if
(
pxCurrentTCB
->
pxTopOfStack
>=
pxCurrentTCB
->
pxEndOfStack
-
portSTACK_LIMIT_PADDING
) \
{ \
char
*
pcOverflowTaskName
=
pxCurrentTCB
->
pcTaskName
; \
vApplicationStackOverflowHook
( (
TaskHandle_t
)
pxCurrentTCB
,
pcOverflowTaskName
); \
} \
}
while
(
0
)
#endif
/* configCHECK_FOR_STACK_OVERFLOW == 1 */
/*-----------------------------------------------------------*/
#if
( (
configCHECK_FOR_STACK_OVERFLOW
>
1
)
&&
(
portSTACK_GROWTH
<
0
) )
#define
taskCHECK_FOR_STACK_OVERFLOW
() \
do { \
const uint32_t * const pulStack = ( uint32_t * ) pxCurrentTCB->pxStack; \
const uint32_t ulCheckValue = ( uint32_t ) 0xa5a5a5a5U; \
\
if( ( pulStack[ 0 ] != ulCheckValue ) || \
( pulStack[ 1 ] != ulCheckValue ) || \
( pulStack[ 2 ] != ulCheckValue ) || \
( pulStack[ 3 ] != ulCheckValue ) ) \
{ \
char * pcOverflowTaskName = pxCurrentTCB->pcTaskName; \
vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pcOverflowTaskName ); \
} \
} while( 0 )
#endif
/* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
/*-----------------------------------------------------------*/
#if
( (
configCHECK_FOR_STACK_OVERFLOW
>
1
)
&&
(
portSTACK_GROWTH
>
0
) )
#define
taskCHECK_FOR_STACK_OVERFLOW
() \
do { \
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
) \
{ \
char
*
pcOverflowTaskName
=
pxCurrentTCB
->
pcTaskName
; \
vApplicationStackOverflowHook
( (
TaskHandle_t
)
pxCurrentTCB
,
pcOverflowTaskName
); \
} \
}
while
(
0
)
#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 */
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