mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-11-04 11:09:01 +01:00
160 lines
8.2 KiB
C
160 lines
8.2 KiB
C
/*
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* FreeRTOS Kernel <DEVELOPMENT BRANCH>
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* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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#ifndef PORTMACRO_H
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#define PORTMACRO_H
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/* *INDENT-OFF* */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* *INDENT-ON* */
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#include <machine/cpu.h>
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/*-----------------------------------------------------------
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* Port specific definitions.
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*
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* The settings in this file configure FreeRTOS correctly for the
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* given hardware and compiler.
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*
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* These settings should not be altered.
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*-----------------------------------------------------------
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*/
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/* Type definitions. */
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#define portCHAR char
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#define portFLOAT float
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#define portDOUBLE double
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#define portLONG long
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#define portSHORT short
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#define portSTACK_TYPE uint32_t
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#define portBASE_TYPE long
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typedef portSTACK_TYPE StackType_t;
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typedef long BaseType_t;
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typedef unsigned long UBaseType_t;
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#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
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typedef uint16_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) 0xffff
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#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
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typedef uint32_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) ( 0xFFFFFFFFUL )
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#else
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#error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
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#endif
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/*-----------------------------------------------------------*/
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/* Architecture specifics. */
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#define portSTACK_GROWTH ( -1 )
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#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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#define portBYTE_ALIGNMENT 4
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#define portNOP() __asm__ volatile ( "mov r0, r0" )
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#define portCRITICAL_NESTING_IN_TCB 1
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#define portIRQ_TRAP_YIELD 31
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/*-----------------------------------------------------------*/
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/* Task utilities. */
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extern void vPortYield( void );
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/*---------------------------------------------------------------------------*/
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#define portYIELD() asm __volatile__ ( " trap #%0 " : : "i" ( portIRQ_TRAP_YIELD ) : "memory" )
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/*---------------------------------------------------------------------------*/
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extern void vTaskEnterCritical( void );
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extern void vTaskExitCritical( void );
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#define portENTER_CRITICAL() vTaskEnterCritical()
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#define portEXIT_CRITICAL() vTaskExitCritical()
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/*---------------------------------------------------------------------------*/
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/* Critical section management. */
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#define portDISABLE_INTERRUPTS() cpu_int_disable()
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#define portENABLE_INTERRUPTS() cpu_int_enable()
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/*---------------------------------------------------------------------------*/
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#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) do { if( xHigherPriorityTaskWoken != pdFALSE ) vTaskSwitchContext( ); } while( 0 )
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/*---------------------------------------------------------------------------*/
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#define portSAVE_CONTEXT() \
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asm __volatile__ \
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( \
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"sub r1, #68 \n" /* Make space on the stack for the context. */ \
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"std r2, [r1] + 0 \n" \
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"stq r4, [r1] + 8 \n" \
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"stq r8, [r1] + 24 \n" \
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"stq r12, [r1] + 40 \n" \
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"mov r6, rtt \n" \
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"mov r7, psr \n" \
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"std r6, [r1] + 56 \n" \
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"movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
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"ldub r3, [r2] + 2 \n" /* Load the current interrupt mask. */ \
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"st r3, [r1]+ 64 \n" /* Store the interrupt mask on the stack. */ \
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"ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the pointer to the TCB. */ \
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"st r1, [r2] \n" /* Save the stack pointer into the TCB. */ \
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"mov r14, r1 \n" /* Compiler expects r14 to be set to the function stack. */ \
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);
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/*---------------------------------------------------------------------------*/
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#define portRESTORE_CONTEXT() \
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asm __volatile__ ( \
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"ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the TCB to find the stack pointer and context. */ \
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"ld r1, [r2] \n" \
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"movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
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"ld r3, [r1] + 64 \n" /* Load the previous interrupt mask. */ \
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"stb r3, [r2] + 2 \n" /* Set the current interrupt mask to be the previous. */ \
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"ldd r6, [r1] + 56 \n" /* Restore context. */ \
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"mov rtt, r6 \n" \
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"mov psr, r7 \n" \
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"ldd r2, [r1] + 0 \n" \
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"ldq r4, [r1] + 8 \n" \
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"ldq r8, [r1] + 24 \n" \
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"ldq r12, [r1] + 40 \n" \
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"add r1, #68 \n" \
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"rti \n" \
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);
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/*---------------------------------------------------------------------------*/
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/* Task function macros as described on the FreeRTOS.org WEB site. */
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#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
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#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
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/*---------------------------------------------------------------------------*/
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/* *INDENT-OFF* */
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#ifdef __cplusplus
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}
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#endif
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/* *INDENT-ON* */
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#endif /* PORTMACRO_H */
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