2 * FreeRTOS Kernel V10.0.1
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3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software.
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 * http://www.FreeRTOS.org
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23 * http://aws.amazon.com/freertos
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25 * 1 tab == 4 spaces!
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31 #include <Windows.h>
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32 #include <WinBase.h>
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34 /******************************************************************************
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36 ******************************************************************************/
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37 /* Type definitions. */
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38 #define portCHAR char
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39 #define portFLOAT float
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40 #define portDOUBLE double
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41 #define portLONG long
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42 #define portSHORT short
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43 #define portSTACK_TYPE size_t
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44 #define portBASE_TYPE long
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45 #define portPOINTER_SIZE_TYPE size_t
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47 typedef portSTACK_TYPE StackType_t;
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48 typedef long BaseType_t;
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49 typedef unsigned long UBaseType_t;
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52 #if( configUSE_16_BIT_TICKS == 1 )
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53 typedef uint16_t TickType_t;
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54 #define portMAX_DELAY ( TickType_t ) 0xffff
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56 typedef uint32_t TickType_t;
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57 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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59 /* 32/64-bit tick type on a 32/64-bit architecture, so reads of the tick
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60 count do not need to be guarded with a critical section. */
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61 #define portTICK_TYPE_IS_ATOMIC 1
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64 /* Hardware specifics. */
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65 #define portSTACK_GROWTH ( -1 )
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66 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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67 #define portINLINE __inline
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69 #if defined( __x86_64__) || defined( _M_X64 )
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70 #define portBYTE_ALIGNMENT 8
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72 #define portBYTE_ALIGNMENT 4
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75 #define portYIELD() vPortGenerateSimulatedInterrupt( portINTERRUPT_YIELD )
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77 /* Simulated interrupts return pdFALSE if no context switch should be performed,
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78 or a non-zero number if a context switch should be performed. */
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79 #define portYIELD_FROM_ISR( x ) ( void ) x
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80 #define portEND_SWITCHING_ISR( x ) portYIELD_FROM_ISR( ( x ) )
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82 void vPortCloseRunningThread( void *pvTaskToDelete, volatile BaseType_t *pxPendYield );
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83 void vPortDeleteThread( void *pvThreadToDelete );
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84 #define portCLEAN_UP_TCB( pxTCB ) vPortDeleteThread( pxTCB )
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85 #define portPRE_TASK_DELETE_HOOK( pvTaskToDelete, pxPendYield ) vPortCloseRunningThread( ( pvTaskToDelete ), ( pxPendYield ) )
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86 #define portDISABLE_INTERRUPTS() vPortEnterCritical()
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87 #define portENABLE_INTERRUPTS() vPortExitCritical()
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89 /* Critical section handling. */
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90 void vPortEnterCritical( void );
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91 void vPortExitCritical( void );
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93 #define portENTER_CRITICAL() vPortEnterCritical()
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94 #define portEXIT_CRITICAL() vPortExitCritical()
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96 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
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97 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
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100 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
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102 /* Check the configuration. */
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103 #if( configMAX_PRIORITIES > 32 )
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104 #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.
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107 /* Store/clear the ready priorities in a bit map. */
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108 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
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109 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
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112 /*-----------------------------------------------------------*/
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115 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) \
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116 __asm volatile( "bsr %1, %0\n\t" \
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117 :"=r"(uxTopPriority) : "rm"(uxReadyPriorities) : "cc" )
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119 /* BitScanReverse returns the bit position of the most significant '1'
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121 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) _BitScanReverse( ( DWORD * ) &( uxTopPriority ), ( uxReadyPriorities ) )
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122 #endif /* __GNUC__ */
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124 #endif /* taskRECORD_READY_PRIORITY */
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127 __pragma( warning( disable:4211 ) ) /* Nonstandard extension used, as extern is only nonstandard to MSVC. */
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131 /* Task function macros as described on the FreeRTOS.org WEB site. */
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132 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
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133 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
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135 #define portINTERRUPT_YIELD ( 0UL )
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136 #define portINTERRUPT_TICK ( 1UL )
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139 * Raise a simulated interrupt represented by the bit mask in ulInterruptMask.
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140 * Each bit can be used to represent an individual interrupt - with the first
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141 * two bits being used for the Yield and Tick interrupts respectively.
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143 void vPortGenerateSimulatedInterrupt( uint32_t ulInterruptNumber );
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146 * Install an interrupt handler to be called by the simulated interrupt handler
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147 * thread. The interrupt number must be above any used by the kernel itself
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148 * (at the time of writing the kernel was using interrupt numbers 0, 1, and 2
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149 * as defined above). The number must also be lower than 32.
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151 * Interrupt handler functions must return a non-zero value if executing the
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152 * handler resulted in a task switch being required.
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154 void vPortSetInterruptHandler( uint32_t ulInterruptNumber, uint32_t (*pvHandler)( void ) );
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