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
47 /******************************************************************************
49 ******************************************************************************/
50 /* Type definitions. */
52 #define portFLOAT float
53 #define portDOUBLE double
55 #define portSHORT short
56 #define portSTACK_TYPE size_t
57 #define portPOINTER_SIZE_TYPE size_t
59 typedef portSTACK_TYPE StackType_t;
61 #if defined( __x86_64__ ) || defined( _M_X64 )
62 #define portBASE_TYPE long long
63 typedef long long BaseType_t;
64 typedef unsigned long long UBaseType_t;
66 #define portBASE_TYPE long
67 typedef long BaseType_t;
68 typedef unsigned long UBaseType_t;
72 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
73 typedef uint16_t TickType_t;
74 #define portMAX_DELAY ( TickType_t ) 0xffff
75 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
76 typedef uint32_t TickType_t;
77 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
79 /* 32-bit tick type on a 32/64-bit architecture, so reads of the tick
80 * count do not need to be guarded with a critical section. */
81 #define portTICK_TYPE_IS_ATOMIC 1
82 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_64_BITS )
83 typedef uint64_t TickType_t;
84 #define portMAX_DELAY ( TickType_t ) 0xffffffffffffffffULL
86 #if defined( __x86_64__ ) || defined( _M_X64 )
87 /* 64-bit tick type on a 64-bit architecture, so reads of the tick
88 * count do not need to be guarded with a critical section. */
89 #define portTICK_TYPE_IS_ATOMIC 1
92 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
95 /* Hardware specifics. */
96 #define portSTACK_GROWTH ( -1 )
97 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
98 #define portINLINE __inline
100 #if defined( __x86_64__ ) || defined( _M_X64 )
101 #define portBYTE_ALIGNMENT 8
103 #define portBYTE_ALIGNMENT 4
106 #define portYIELD() vPortGenerateSimulatedInterrupt( portINTERRUPT_YIELD )
109 extern volatile BaseType_t xInsideInterrupt;
110 #define portSOFTWARE_BARRIER() while( xInsideInterrupt != pdFALSE )
113 /* Simulated interrupts return pdFALSE if no context switch should be performed,
114 * or a non-zero number if a context switch should be performed. */
115 #define portYIELD_FROM_ISR( x ) return x
116 #define portEND_SWITCHING_ISR( x ) portYIELD_FROM_ISR( ( x ) )
118 void vPortCloseRunningThread( void * pvTaskToDelete,
119 volatile BaseType_t * pxPendYield );
120 void vPortDeleteThread( void * pvThreadToDelete );
121 #define portCLEAN_UP_TCB( pxTCB ) vPortDeleteThread( pxTCB )
122 #define portPRE_TASK_DELETE_HOOK( pvTaskToDelete, pxPendYield ) vPortCloseRunningThread( ( pvTaskToDelete ), ( pxPendYield ) )
123 #define portDISABLE_INTERRUPTS() vPortEnterCritical()
124 #define portENABLE_INTERRUPTS() vPortExitCritical()
126 /* Critical section handling. */
127 void vPortEnterCritical( void );
128 void vPortExitCritical( void );
130 #define portENTER_CRITICAL() vPortEnterCritical()
131 #define portEXIT_CRITICAL() vPortExitCritical()
133 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
134 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
137 /*-----------------------------------------------------------*/
139 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
141 /* Check the configuration. */
142 #if ( configMAX_PRIORITIES > 32 )
143 #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.
146 /* Store/clear the ready priorities in a bit map. */
147 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
148 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( ( ( UBaseType_t ) 1 ) << ( uxPriority ) )
152 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
153 __asm volatile ( "bsr %1, %0\n\t" \
154 : "=r" ( uxTopPriority ) \
155 : "rm" ( uxReadyPriorities ) \
160 /* BitScanReverse returns the bit position of the most significant '1'
162 #if defined( __x86_64__ ) || defined( _M_X64 )
164 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
167 DWORD ulTopPriority; \
168 _BitScanReverse64( &ulTopPriority, ( uxReadyPriorities ) ); \
169 uxTopPriority = ulTopPriority; \
172 #else /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
174 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
176 #endif /* #if defined( __x86_64__ ) || defined( _M_X64 ) */
178 #endif /* __GNUC__ */
180 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
183 __pragma( warning( disable:4211 ) ) /* Nonstandard extension used, as extern is only nonstandard to MSVC. */
187 /* Task function macros as described on the FreeRTOS.org WEB site. */
188 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
189 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
191 #define portINTERRUPT_YIELD ( 0UL )
192 #define portINTERRUPT_TICK ( 1UL )
193 #define portINTERRUPT_APPLICATION_DEFINED_START ( 2UL )
196 * Raise a simulated interrupt represented by the bit mask in ulInterruptMask.
197 * Each bit can be used to represent an individual interrupt - with the first
198 * two bits being used for the Yield and Tick interrupts respectively.
200 void vPortGenerateSimulatedInterrupt( uint32_t ulInterruptNumber );
203 * Raise a simulated interrupt represented by the bit mask in ulInterruptMask.
204 * Each bit can be used to represent an individual interrupt - with the first
205 * two bits being used for the Yield and Tick interrupts respectively. This function
206 * can be called in a windows thread.
208 void vPortGenerateSimulatedInterruptFromWindowsThread( uint32_t ulInterruptNumber );
211 * Install an interrupt handler to be called by the simulated interrupt handler
212 * thread. The interrupt number must be above any used by the kernel itself
213 * (at the time of writing the kernel was using interrupt numbers 0, 1, and 2
214 * as defined above). The number must also be lower than 32.
216 * Interrupt handler functions must return a non-zero value if executing the
217 * handler resulted in a task switch being required.
219 void vPortSetInterruptHandler( uint32_t ulInterruptNumber,
220 uint32_t ( * pvHandler )( void ) );
226 #endif /* ifndef PORTMACRO_H */