2 * FreeRTOS Kernel V10.4.4
3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * SPDX-License-Identifier: MIT
7 * Permission is hereby granted, free of charge, to any person obtaining a copy of
8 * this software and associated documentation files (the "Software"), to deal in
9 * the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
11 * the Software, and to permit persons to whom the Software is furnished to do so,
12 * subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in all
15 * copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
19 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
20 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 * https://www.FreeRTOS.org
25 * https://github.com/FreeRTOS
35 /******************************************************************************
37 ******************************************************************************/
38 /* Type definitions. */
40 #define portFLOAT float
41 #define portDOUBLE double
43 #define portSHORT short
44 #define portSTACK_TYPE size_t
45 #define portBASE_TYPE long
46 #define portPOINTER_SIZE_TYPE size_t
48 typedef portSTACK_TYPE StackType_t;
49 typedef long BaseType_t;
50 typedef unsigned long UBaseType_t;
53 #if( configUSE_16_BIT_TICKS == 1 )
54 typedef uint16_t TickType_t;
55 #define portMAX_DELAY ( TickType_t ) 0xffff
57 typedef uint32_t TickType_t;
58 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
60 /* 32/64-bit tick type on a 32/64-bit architecture, so reads of the tick
61 count do not need to be guarded with a critical section. */
62 #define portTICK_TYPE_IS_ATOMIC 1
65 /* Hardware specifics. */
66 #define portSTACK_GROWTH ( -1 )
67 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
68 #define portINLINE __inline
70 #if defined( __x86_64__) || defined( _M_X64 )
71 #define portBYTE_ALIGNMENT 8
73 #define portBYTE_ALIGNMENT 4
76 #define portYIELD() vPortGenerateSimulatedInterrupt( portINTERRUPT_YIELD )
79 extern volatile BaseType_t xInsideInterrupt;
80 #define portSOFTWARE_BARRIER() while( xInsideInterrupt != pdFALSE )
83 /* Simulated interrupts return pdFALSE if no context switch should be performed,
84 or a non-zero number if a context switch should be performed. */
85 #define portYIELD_FROM_ISR( x ) ( void ) x
86 #define portEND_SWITCHING_ISR( x ) portYIELD_FROM_ISR( ( x ) )
88 void vPortCloseRunningThread( void *pvTaskToDelete, volatile BaseType_t *pxPendYield );
89 void vPortDeleteThread( void *pvThreadToDelete );
90 #define portCLEAN_UP_TCB( pxTCB ) vPortDeleteThread( pxTCB )
91 #define portPRE_TASK_DELETE_HOOK( pvTaskToDelete, pxPendYield ) vPortCloseRunningThread( ( pvTaskToDelete ), ( pxPendYield ) )
92 #define portDISABLE_INTERRUPTS() vPortEnterCritical()
93 #define portENABLE_INTERRUPTS() vPortExitCritical()
95 /* Critical section handling. */
96 void vPortEnterCritical( void );
97 void vPortExitCritical( void );
99 #define portENTER_CRITICAL() vPortEnterCritical()
100 #define portEXIT_CRITICAL() vPortExitCritical()
102 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
103 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
106 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
108 /* Check the configuration. */
109 #if( configMAX_PRIORITIES > 32 )
110 #error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
113 /* Store/clear the ready priorities in a bit map. */
114 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
115 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
118 /*-----------------------------------------------------------*/
121 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
122 __asm volatile( "bsr %1, %0\n\t" \
123 :"=r"(uxTopPriority) : "rm"(uxReadyPriorities) : "cc" )
125 /* BitScanReverse returns the bit position of the most significant '1'
127 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
128 #endif /* __GNUC__ */
130 #endif /* taskRECORD_READY_PRIORITY */
133 __pragma( warning( disable:4211 ) ) /* Nonstandard extension used, as extern is only nonstandard to MSVC. */
137 /* Task function macros as described on the FreeRTOS.org WEB site. */
138 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
139 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
141 #define portINTERRUPT_YIELD ( 0UL )
142 #define portINTERRUPT_TICK ( 1UL )
145 * Raise a simulated interrupt represented by the bit mask in ulInterruptMask.
146 * Each bit can be used to represent an individual interrupt - with the first
147 * two bits being used for the Yield and Tick interrupts respectively.
149 void vPortGenerateSimulatedInterrupt( uint32_t ulInterruptNumber );
152 * Install an interrupt handler to be called by the simulated interrupt handler
153 * thread. The interrupt number must be above any used by the kernel itself
154 * (at the time of writing the kernel was using interrupt numbers 0, 1, and 2
155 * as defined above). The number must also be lower than 32.
157 * Interrupt handler functions must return a non-zero value if executing the
158 * handler resulted in a task switch being required.
160 void vPortSetInterruptHandler( uint32_t ulInterruptNumber, uint32_t (*pvHandler)( void ) );