2 * FreeRTOS Kernel V10.0.0
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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. If you wish to use our Amazon
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14 * FreeRTOS name, please do so in a fair use way that does not cause confusion.
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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18 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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19 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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23 * http://www.FreeRTOS.org
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24 * http://aws.amazon.com/freertos
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26 * 1 tab == 4 spaces!
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33 #include <machine.h>
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39 /*-----------------------------------------------------------
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40 * Port specific definitions.
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42 * The settings in this file configure FreeRTOS correctly for the
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43 * given hardware and compiler.
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45 * These settings should not be altered.
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46 *-----------------------------------------------------------
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49 /* Type definitions - these are a bit legacy and not really used now, other than
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50 portSTACK_TYPE and portBASE_TYPE. */
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51 #define portCHAR char
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52 #define portFLOAT float
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53 #define portDOUBLE double
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54 #define portLONG long
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55 #define portSHORT short
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56 #define portSTACK_TYPE uint32_t
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57 #define portBASE_TYPE long
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59 typedef portSTACK_TYPE StackType_t;
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60 typedef long BaseType_t;
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61 typedef unsigned long UBaseType_t;
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63 #if( configUSE_16_BIT_TICKS == 1 )
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64 typedef uint16_t TickType_t;
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65 #define portMAX_DELAY ( TickType_t ) 0xffff
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67 typedef uint32_t TickType_t;
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68 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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70 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
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71 not need to be guarded with a critical section. */
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72 #define portTICK_TYPE_IS_ATOMIC 1
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74 /*-----------------------------------------------------------*/
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76 /* Hardware specifics. */
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77 #define portBYTE_ALIGNMENT 8
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78 #define portSTACK_GROWTH -1
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79 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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80 #define portNOP() nop()
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81 #define portSTART_SCHEDULER_TRAP_NO ( 32 )
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82 #define portYIELD_TRAP_NO ( 33 )
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83 #define portKERNEL_INTERRUPT_PRIORITY ( 1 )
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85 void vPortYield( void );
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86 #define portYIELD() vPortYield()
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88 extern void vTaskSwitchContext( void );
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89 #define portYIELD_FROM_ISR( x ) if( x != pdFALSE ) vTaskSwitchContext()
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92 * This function tells the kernel that the task referenced by xTask is going to
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93 * use the floating point registers and therefore requires the floating point
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94 * registers saved as part of its context.
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96 BaseType_t xPortUsesFloatingPoint( void* xTask );
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99 * The flop save and restore functions are defined in portasm.src and called by
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100 * the trace "task switched in" and "trace task switched out" macros.
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102 void vPortSaveFlopRegisters( void *pulBuffer );
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103 void vPortRestoreFlopRegisters( void *pulBuffer );
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106 * pxTaskTag is used to point to the buffer into which the floating point
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107 * context should be saved. If pxTaskTag is NULL then the task does not use
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108 * a floating point context.
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110 #define traceTASK_SWITCHED_OUT() if( pxCurrentTCB->pxTaskTag != NULL ) vPortSaveFlopRegisters( pxCurrentTCB->pxTaskTag )
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111 #define traceTASK_SWITCHED_IN() if( pxCurrentTCB->pxTaskTag != NULL ) vPortRestoreFlopRegisters( pxCurrentTCB->pxTaskTag )
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114 * These macros should be called directly, but through the taskENTER_CRITICAL()
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115 * and taskEXIT_CRITICAL() macros.
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117 #define portENABLE_INTERRUPTS() set_imask( 0x00 )
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118 #define portDISABLE_INTERRUPTS() set_imask( portKERNEL_INTERRUPT_PRIORITY )
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120 /* Critical nesting counts are stored in the TCB. */
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121 #define portCRITICAL_NESTING_IN_TCB ( 1 )
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123 /* The critical nesting functions defined within tasks.c. */
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124 extern void vTaskEnterCritical( void );
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125 extern void vTaskExitCritical( void );
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126 #define portENTER_CRITICAL() vTaskEnterCritical();
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127 #define portEXIT_CRITICAL() vTaskExitCritical();
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129 /*-----------------------------------------------------------*/
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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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139 #endif /* PORTMACRO_H */
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