2 * FreeRTOS Kernel V10.3.0
\r
3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
\r
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
\r
6 * this software and associated documentation files (the "Software"), to deal in
\r
7 * the Software without restriction, including without limitation the rights to
\r
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
\r
9 * the Software, and to permit persons to whom the Software is furnished to do so,
\r
10 * subject to the following conditions:
\r
12 * The above copyright notice and this permission notice shall be included in all
\r
13 * copies or substantial portions of the Software.
\r
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
\r
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
\r
17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
\r
18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
\r
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
\r
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\r
22 * http://www.FreeRTOS.org
\r
23 * http://aws.amazon.com/freertos
\r
25 * 1 tab == 4 spaces!
\r
28 #ifndef STACK_MACROS_H
\r
29 #define STACK_MACROS_H
\r
31 #ifndef _MSC_VER /* Visual Studio doesn't support #warning. */
\r
32 #warning The name of this file has changed to stack_macros.h. Please update your code accordingly. This source file (which has the original name) will be removed in future released.
\r
36 * Call the stack overflow hook function if the stack of the task being swapped
\r
37 * out is currently overflowed, or looks like it might have overflowed in the
\r
40 * Setting configCHECK_FOR_STACK_OVERFLOW to 1 will cause the macro to check
\r
41 * the current stack state only - comparing the current top of stack value to
\r
42 * the stack limit. Setting configCHECK_FOR_STACK_OVERFLOW to greater than 1
\r
43 * will also cause the last few stack bytes to be checked to ensure the value
\r
44 * to which the bytes were set when the task was created have not been
\r
45 * overwritten. Note this second test does not guarantee that an overflowed
\r
46 * stack will always be recognised.
\r
49 /*-----------------------------------------------------------*/
\r
51 #if( ( configCHECK_FOR_STACK_OVERFLOW == 1 ) && ( portSTACK_GROWTH < 0 ) )
\r
53 /* Only the current stack state is to be checked. */
\r
54 #define taskCHECK_FOR_STACK_OVERFLOW() \
\r
56 /* Is the currently saved stack pointer within the stack limit? */ \
\r
57 if( pxCurrentTCB->pxTopOfStack <= pxCurrentTCB->pxStack ) \
\r
59 vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
\r
63 #endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
\r
64 /*-----------------------------------------------------------*/
\r
66 #if( ( configCHECK_FOR_STACK_OVERFLOW == 1 ) && ( portSTACK_GROWTH > 0 ) )
\r
68 /* Only the current stack state is to be checked. */
\r
69 #define taskCHECK_FOR_STACK_OVERFLOW() \
\r
72 /* Is the currently saved stack pointer within the stack limit? */ \
\r
73 if( pxCurrentTCB->pxTopOfStack >= pxCurrentTCB->pxEndOfStack ) \
\r
75 vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
\r
79 #endif /* configCHECK_FOR_STACK_OVERFLOW == 1 */
\r
80 /*-----------------------------------------------------------*/
\r
82 #if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH < 0 ) )
\r
84 #define taskCHECK_FOR_STACK_OVERFLOW() \
\r
86 const uint32_t * const pulStack = ( uint32_t * ) pxCurrentTCB->pxStack; \
\r
87 const uint32_t ulCheckValue = ( uint32_t ) 0xa5a5a5a5; \
\r
89 if( ( pulStack[ 0 ] != ulCheckValue ) || \
\r
90 ( pulStack[ 1 ] != ulCheckValue ) || \
\r
91 ( pulStack[ 2 ] != ulCheckValue ) || \
\r
92 ( pulStack[ 3 ] != ulCheckValue ) ) \
\r
94 vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
\r
98 #endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
\r
99 /*-----------------------------------------------------------*/
\r
101 #if( ( configCHECK_FOR_STACK_OVERFLOW > 1 ) && ( portSTACK_GROWTH > 0 ) )
\r
103 #define taskCHECK_FOR_STACK_OVERFLOW() \
\r
105 int8_t *pcEndOfStack = ( int8_t * ) pxCurrentTCB->pxEndOfStack; \
\r
106 static const uint8_t ucExpectedStackBytes[] = { tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
\r
107 tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
\r
108 tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
\r
109 tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, \
\r
110 tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE, tskSTACK_FILL_BYTE }; \
\r
113 pcEndOfStack -= sizeof( ucExpectedStackBytes ); \
\r
115 /* Has the extremity of the task stack ever been written over? */ \
\r
116 if( memcmp( ( void * ) pcEndOfStack, ( void * ) ucExpectedStackBytes, sizeof( ucExpectedStackBytes ) ) != 0 ) \
\r
118 vApplicationStackOverflowHook( ( TaskHandle_t ) pxCurrentTCB, pxCurrentTCB->pcTaskName ); \
\r
122 #endif /* #if( configCHECK_FOR_STACK_OVERFLOW > 1 ) */
\r
123 /*-----------------------------------------------------------*/
\r
125 /* Remove stack overflow macro if not being used. */
\r
126 #ifndef taskCHECK_FOR_STACK_OVERFLOW
\r
127 #define taskCHECK_FOR_STACK_OVERFLOW()
\r
132 #endif /* STACK_MACROS_H */
\r