mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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246 lines
11 KiB
C
246 lines
11 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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#ifdef __IAR_SYSTEMS_ICC__
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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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/*-----------------------------------------------------------
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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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#if __DATA_MODEL__ == __DATA_MODEL_FAR__ && __CODE_MODEL__ == __CODE_MODEL_NEAR__
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#warning This port has not been tested with your selected memory model combination. If a far data model is required it is recommended to also use a far code model.
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#endif
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#if __DATA_MODEL__ == __DATA_MODEL_NEAR__ && __CODE_MODEL__ == __CODE_MODEL_FAR__
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#warning This port has not been tested with your selected memory model combination. If a far code model is required it is recommended to also use a far data model.
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#endif
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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 uint16_t
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#define portBASE_TYPE short
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typedef portSTACK_TYPE StackType_t;
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typedef short BaseType_t;
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typedef unsigned short UBaseType_t;
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#if __DATA_MODEL__ == __DATA_MODEL_FAR__
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#define portPOINTER_SIZE_TYPE uint32_t
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#else
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#define portPOINTER_SIZE_TYPE uint16_t
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#endif
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#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
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typedef unsigned int 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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/* Interrupt control macros. */
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#define portDISABLE_INTERRUPTS() __asm( "DI" )
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#define portENABLE_INTERRUPTS() __asm( "EI" )
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/*-----------------------------------------------------------*/
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/* Critical section control macros. */
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#define portNO_CRITICAL_SECTION_NESTING ( ( uint16_t ) 0 )
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#define portENTER_CRITICAL() \
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{ \
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extern volatile uint16_t usCriticalNesting; \
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\
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portDISABLE_INTERRUPTS(); \
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\
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/* Now that interrupts are disabled, ulCriticalNesting can be accessed */ \
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/* directly. Increment ulCriticalNesting to keep a count of how many */ \
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/* times portENTER_CRITICAL() has been called. */ \
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usCriticalNesting++; \
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}
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#define portEXIT_CRITICAL() \
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{ \
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extern volatile uint16_t usCriticalNesting; \
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\
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if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
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{ \
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/* Decrement the nesting count when leaving a critical section. */ \
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usCriticalNesting--; \
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\
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/* If the nesting level has reached zero then interrupts should be */ \
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/* re-enabled. */ \
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if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
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{ \
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portENABLE_INTERRUPTS(); \
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} \
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} \
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}
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/*-----------------------------------------------------------*/
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/* Task utilities. */
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#define portNOP() __asm( "NOP" )
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#define portYIELD() __asm( "BRK" )
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#ifndef configREQUIRE_ASM_ISR_WRAPPER
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#define configREQUIRE_ASM_ISR_WRAPPER 1
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#endif
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#if( configREQUIRE_ASM_ISR_WRAPPER == 1 )
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/* You must implement an assembly ISR wrapper (see the below for details) if you need an ISR to cause a context switch.
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* https://www.freertos.org/Documentation/02-Kernel/03-Supported-devices/04-Demos/Renesas/RTOS_RL78_IAR_Demos#writing-interrupt-service-routines */
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#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) do { if( xHigherPriorityTaskWoken != pdFALSE ) vTaskSwitchContext(); } while( 0 )
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#else
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/* You must not implement an assembly ISR wrapper even if you need an ISR to cause a context switch.
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* The portYIELD, which is similar to role of an assembly ISR wrapper, runs only when a context switch is required. */
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#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) do { if( xHigherPriorityTaskWoken != pdFALSE ) portYIELD(); } while( 0 )
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#endif
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/*-----------------------------------------------------------*/
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/* Hardware specifics. */
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#define portBYTE_ALIGNMENT 2
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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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/*-----------------------------------------------------------*/
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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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/* *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 /* __IAR_SYSTEMS_ICC__ */
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; /*----------------------------------------------------------------------------- */
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/* The macros below are processed for asm sources which include portmacro.h. */
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/*----------------------------------------------------------------------------- */
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#ifdef __IAR_SYSTEMS_ASM__
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; /* Functions and variables used by this file. */
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/*----------------------------------------------------------------------------- */
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EXTERN _pxCurrentTCB
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EXTERN _usCriticalNesting
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; /* Macro used to declutter calls, depends on the selected code model. */
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/*----------------------------------------------------------------------------- */
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#if __CODE_MODEL__ == __CODE_MODEL_FAR__
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#define RCALL( X ) CALL F: X
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#else
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#define RCALL( X ) CALL X
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#endif
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; /*-----------------------------------------------------------------------------
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* ; * portSAVE_CONTEXT MACRO
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* ; * Saves the context of the general purpose registers, CS and ES (only in __far
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* ; * memory mode) registers the _usCriticalNesting value and the Stack Pointer
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* ; * of the active Task onto the task stack.
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* ; *---------------------------------------------------------------------------*/
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portSAVE_CONTEXT MACRO
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PUSH AX; /* Save AX Register to stack. */
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PUSH HL
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#if __CODE_MODEL__ == __CODE_MODEL_FAR__
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MOV A, CS; /* Save CS register. */
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XCH A, X
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MOV A, ES; /* Save ES register. */
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PUSH AX
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#else
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MOV A, CS; /* Save CS register. */
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PUSH AX
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#endif
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PUSH DE; /* Save the remaining general purpose registers. */
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PUSH BC
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MOVW AX, _usCriticalNesting; /* Save the _usCriticalNesting value. */
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PUSH AX
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MOVW AX, _pxCurrentTCB; /* Save the Task stack pointer. */
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MOVW HL, AX
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MOVW AX, SP
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MOVW[ HL ], AX
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ENDM
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; /*----------------------------------------------------------------------------- */
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/*-----------------------------------------------------------------------------
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* ; * portRESTORE_CONTEXT MACRO
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* ; * Restores the task Stack Pointer then use this to restore _usCriticalNesting,
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* ; * general purpose registers and the CS and ES (only in __far memory mode)
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* ; * of the selected task from the task stack.
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* ; *---------------------------------------------------------------------------*/
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portRESTORE_CONTEXT MACRO
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MOVW AX, _pxCurrentTCB; /* Restore the Task stack pointer. */
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MOVW HL, AX
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MOVW AX, [ HL ]
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MOVW SP, AX
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POP AX; /* Restore _usCriticalNesting value. */
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MOVW _usCriticalNesting, AX
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POP BC; /* Restore the necessary general purpose registers. */
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POP DE
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#if __CODE_MODEL__ == __CODE_MODEL_FAR__
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POP AX; /* Restore the ES register. */
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MOV ES, A
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XCH A, X; /* Restore the CS register. */
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MOV CS, A
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#else
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POP AX
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MOV CS, A; /* Restore CS register. */
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#endif
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POP HL; /* Restore general purpose register HL. */
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POP AX; /* Restore AX. */
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ENDM
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; /*----------------------------------------------------------------------------- */
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#endif /* __IAR_SYSTEMS_ASM__ */
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#endif /* PORTMACRO_H */
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