1 /* 2 * FreeRTOS Kernel V11.1.0 3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. 4 * 5 * SPDX-License-Identifier: MIT 6 * 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: 13 * 14 * The above copyright notice and this permission notice shall be included in all 15 * copies or substantial portions of the Software. 16 * 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. 23 * 24 * https://www.FreeRTOS.org 25 * https://github.com/FreeRTOS 26 * 27 */ 28 29 #ifndef PORTMACRO_H 30 #define PORTMACRO_H 31 32 /* *INDENT-OFF* */ 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 /* *INDENT-ON* */ 37 38 #include <machine/cpu.h> 39 40 /*----------------------------------------------------------- 41 * Port specific definitions. 42 * 43 * The settings in this file configure FreeRTOS correctly for the 44 * given hardware and compiler. 45 * 46 * These settings should not be altered. 47 *----------------------------------------------------------- 48 */ 49 50 /* Type definitions. */ 51 #define portCHAR char 52 #define portFLOAT float 53 #define portDOUBLE double 54 #define portLONG long 55 #define portSHORT short 56 #define portSTACK_TYPE uint32_t 57 #define portBASE_TYPE long 58 59 typedef portSTACK_TYPE StackType_t; 60 typedef long BaseType_t; 61 typedef unsigned long UBaseType_t; 62 63 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS ) 64 typedef uint16_t TickType_t; 65 #define portMAX_DELAY ( TickType_t ) 0xffff 66 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS ) 67 typedef uint32_t TickType_t; 68 #define portMAX_DELAY ( TickType_t ) ( 0xFFFFFFFFUL ) 69 #else 70 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width. 71 #endif 72 /*-----------------------------------------------------------*/ 73 74 /* Architecture specifics. */ 75 #define portSTACK_GROWTH ( -1 ) 76 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) 77 #define portBYTE_ALIGNMENT 4 78 #define portNOP() __asm__ volatile ( "mov r0, r0" ) 79 #define portCRITICAL_NESTING_IN_TCB 1 80 #define portIRQ_TRAP_YIELD 31 81 /*-----------------------------------------------------------*/ 82 83 /* Task utilities. */ 84 85 extern void vPortYield( void ); 86 87 /*---------------------------------------------------------------------------*/ 88 89 #define portYIELD() asm __volatile__ ( " trap #%0 " : : "i" ( portIRQ_TRAP_YIELD ) : "memory" ) 90 /*---------------------------------------------------------------------------*/ 91 92 extern void vTaskEnterCritical( void ); 93 extern void vTaskExitCritical( void ); 94 #define portENTER_CRITICAL() vTaskEnterCritical() 95 #define portEXIT_CRITICAL() vTaskExitCritical() 96 /*---------------------------------------------------------------------------*/ 97 98 /* Critical section management. */ 99 #define portDISABLE_INTERRUPTS() cpu_int_disable() 100 #define portENABLE_INTERRUPTS() cpu_int_enable() 101 102 /*---------------------------------------------------------------------------*/ 103 104 #define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) do { if( xHigherPriorityTaskWoken != pdFALSE ) vTaskSwitchContext( ); } while( 0 ) 105 106 /*---------------------------------------------------------------------------*/ 107 108 #define portSAVE_CONTEXT() \ 109 asm __volatile__ \ 110 ( \ 111 "sub r1, #68 \n" /* Make space on the stack for the context. */ \ 112 "std r2, [r1] + 0 \n" \ 113 "stq r4, [r1] + 8 \n" \ 114 "stq r8, [r1] + 24 \n" \ 115 "stq r12, [r1] + 40 \n" \ 116 "mov r6, rtt \n" \ 117 "mov r7, psr \n" \ 118 "std r6, [r1] + 56 \n" \ 119 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \ 120 "ldub r3, [r2] + 2 \n" /* Load the current interrupt mask. */ \ 121 "st r3, [r1]+ 64 \n" /* Store the interrupt mask on the stack. */ \ 122 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the pointer to the TCB. */ \ 123 "st r1, [r2] \n" /* Save the stack pointer into the TCB. */ \ 124 "mov r14, r1 \n" /* Compiler expects r14 to be set to the function stack. */ \ 125 ); 126 /*---------------------------------------------------------------------------*/ 127 128 #define portRESTORE_CONTEXT() \ 129 asm __volatile__ ( \ 130 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the TCB to find the stack pointer and context. */ \ 131 "ld r1, [r2] \n" \ 132 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \ 133 "ld r3, [r1] + 64 \n" /* Load the previous interrupt mask. */ \ 134 "stb r3, [r2] + 2 \n" /* Set the current interrupt mask to be the previous. */ \ 135 "ldd r6, [r1] + 56 \n" /* Restore context. */ \ 136 "mov rtt, r6 \n" \ 137 "mov psr, r7 \n" \ 138 "ldd r2, [r1] + 0 \n" \ 139 "ldq r4, [r1] + 8 \n" \ 140 "ldq r8, [r1] + 24 \n" \ 141 "ldq r12, [r1] + 40 \n" \ 142 "add r1, #68 \n" \ 143 "rti \n" \ 144 ); 145 146 /*---------------------------------------------------------------------------*/ 147 148 /* Task function macros as described on the FreeRTOS.org WEB site. */ 149 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters ) 150 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters ) 151 /*---------------------------------------------------------------------------*/ 152 153 /* *INDENT-OFF* */ 154 #ifdef __cplusplus 155 } 156 #endif 157 /* *INDENT-ON* */ 158 159 #endif /* PORTMACRO_H */ 160
