2 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
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
32 #ifdef WIN32_LEAN_AND_MEAN
43 /******************************************************************************
45 ******************************************************************************/
46 /* Type definitions. */
48 #define portFLOAT float
49 #define portDOUBLE double
51 #define portSHORT short
52 #define portSTACK_TYPE size_t
53 #define portPOINTER_SIZE_TYPE size_t
55 typedef portSTACK_TYPE StackType_t;
57 #if defined( __x86_64__ ) || defined( _M_X64 )
58 #define portBASE_TYPE long long
59 typedef long long BaseType_t;
60 typedef unsigned long long UBaseType_t;
62 #define portBASE_TYPE long
63 typedef long BaseType_t;
64 typedef unsigned long UBaseType_t;
68 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
69 typedef uint16_t TickType_t;
70 #define portMAX_DELAY ( TickType_t ) 0xffff
71 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
72 typedef uint32_t TickType_t;
73 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
75 /* 32/64-bit tick type on a 32/64-bit architecture, so reads of the tick
76 * count do not need to be guarded with a critical section. */
77 #define portTICK_TYPE_IS_ATOMIC 1
79 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
82 /* Hardware specifics. */
83 #define portSTACK_GROWTH ( -1 )
84 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
85 #define portINLINE __inline
87 #if defined( __x86_64__ ) || defined( _M_X64 )
88 #define portBYTE_ALIGNMENT 8
90 #define portBYTE_ALIGNMENT 4
93 #define portYIELD() vPortGenerateSimulatedInterrupt( portINTERRUPT_YIELD )
96 extern volatile BaseType_t xInsideInterrupt;
97 #define portSOFTWARE_BARRIER() while( xInsideInterrupt != pdFALSE )
100 /* Simulated interrupts return pdFALSE if no context switch should be performed,
101 * or a non-zero number if a context switch should be performed. */
102 #define portYIELD_FROM_ISR( x ) ( void ) x
103 #define portEND_SWITCHING_ISR( x ) portYIELD_FROM_ISR( ( x ) )
105 void vPortCloseRunningThread( void * pvTaskToDelete,
106 volatile BaseType_t * pxPendYield );
107 void vPortDeleteThread( void * pvThreadToDelete );
108 #define portCLEAN_UP_TCB( pxTCB ) vPortDeleteThread( pxTCB )
109 #define portPRE_TASK_DELETE_HOOK( pvTaskToDelete, pxPendYield ) vPortCloseRunningThread( ( pvTaskToDelete ), ( pxPendYield ) )
110 #define portDISABLE_INTERRUPTS() vPortEnterCritical()
111 #define portENABLE_INTERRUPTS() vPortExitCritical()
113 /* Critical section handling. */
114 void vPortEnterCritical( void );
115 void vPortExitCritical( void );
117 #define portENTER_CRITICAL() vPortEnterCritical()
118 #define portEXIT_CRITICAL() vPortExitCritical()
120 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
121 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
124 /*-----------------------------------------------------------*/
126 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
128 /* Check the configuration. */
129 #if ( configMAX_PRIORITIES > 32 )
130 #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.
133 /* Store/clear the ready priorities in a bit map. */
134 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
135 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
139 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
140 __asm volatile ( "bsr %1, %0\n\t" \
141 : "=r" ( uxTopPriority ) \
142 : "rm" ( uxReadyPriorities ) \
147 /* BitScanReverse returns the bit position of the most significant '1'
149 #if defined( __x86_64__ ) || defined( _M_X64 )
151 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
154 DWORD ulTopPriority; \
155 _BitScanReverse64( &ulTopPriority, ( uxReadyPriorities ) ); \
156 uxTopPriority = ulTopPriority; \
159 #else /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
161 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
163 #endif /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
165 #endif /* __GNUC__ */
167 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
170 __pragma( warning( disable:4211 ) ) /* Nonstandard extension used, as extern is only nonstandard to MSVC. */
174 /* Task function macros as described on the FreeRTOS.org WEB site. */
175 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
176 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
178 #define portINTERRUPT_YIELD ( 0UL )
179 #define portINTERRUPT_TICK ( 1UL )
182 * Raise a simulated interrupt represented by the bit mask in ulInterruptMask.
183 * Each bit can be used to represent an individual interrupt - with the first
184 * two bits being used for the Yield and Tick interrupts respectively.
186 void vPortGenerateSimulatedInterrupt( uint32_t ulInterruptNumber );
189 * Install an interrupt handler to be called by the simulated interrupt handler
190 * thread. The interrupt number must be above any used by the kernel itself
191 * (at the time of writing the kernel was using interrupt numbers 0, 1, and 2
192 * as defined above). The number must also be lower than 32.
194 * Interrupt handler functions must return a non-zero value if executing the
195 * handler resulted in a task switch being required.
197 void vPortSetInterruptHandler( uint32_t ulInterruptNumber,
198 uint32_t ( * pvHandler )( void ) );
200 #endif /* ifndef PORTMACRO_H */