| ;/*
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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 |
| ; * |
| ; * 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
|
| ; * 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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| ; * 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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|
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| #include "ISR_Support.h"
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| ;------------------------------------------------------------------------------
|
|
|
| #if __CORE__ != __78K0R__
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| #error "This file is only for 78K0R Devices"
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| #endif
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|
|
| #define CS 0xFFFFC
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| #define ES 0xFFFFD
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|
|
| ; Functions implemented in this file
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| ;------------------------------------------------------------------------------
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| PUBLIC vPortYield
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| PUBLIC vPortStart
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|
|
| ; Functions used by scheduler
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| ;------------------------------------------------------------------------------
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| EXTERN vTaskSwitchContext
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| EXTERN xTaskIncrementTick
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|
|
| ; Tick ISR Prototype
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| ;------------------------------------------------------------------------------
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| ; EXTERN ?CL78K0R_V2_L00
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|
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| PUBWEAK `??MD_INTTM05??INTVEC 68`
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| PUBLIC MD_INTTM05
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|
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| MD_INTTM05 SYMBOL "MD_INTTM05"
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| `??MD_INTTM05??INTVEC 68` SYMBOL "??INTVEC 68", MD_INTTM05
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|
|
|
|
|
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| ;------------------------------------------------------------------------------
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| ; Yield to another task. Implemented as a software interrupt. The return
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| ; address and PSW will have been saved to the stack automatically before
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| ; this code runs.
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| ;
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| ; Input: NONE
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| ;
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| ; Call: CALL vPortYield
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| ;
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| ; Output: NONE
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| ;
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| ;------------------------------------------------------------------------------
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| RSEG CODE:CODE
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| vPortYield:
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| portSAVE_CONTEXT ; Save the context of the current task.
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| call vTaskSwitchContext ; Call the scheduler to select the next task.
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| portRESTORE_CONTEXT ; Restore the context of the next task to run.
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| retb
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|
|
|
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| ;------------------------------------------------------------------------------
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| ; Restore the context of the first task that is going to run.
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| ;
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| ; Input: NONE
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| ;
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| ; Call: CALL vPortStart
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| ;
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| ; Output: NONE
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| ;
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| ;------------------------------------------------------------------------------
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| RSEG CODE:CODE
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| vPortStart:
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| portRESTORE_CONTEXT ; Restore the context of whichever task the ...
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| reti ; An interrupt stack frame is used so the task
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| ; is started using a RETI instruction.
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|
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| ;------------------------------------------------------------------------------
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| ; Perform the necessary steps of the Tick Count Increment and Task Switch
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| ; depending on the chosen kernel configuration
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| ;
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| ; Input: NONE
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| ;
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| ; Call: ISR
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| ;
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| ; Output: NONE
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| ;
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| ;------------------------------------------------------------------------------
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|
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| MD_INTTM05:
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|
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| portSAVE_CONTEXT ; Save the context of the current task.
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| call xTaskIncrementTick ; Call the timer tick function.
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| #if configUSE_PREEMPTION == 1
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| call vTaskSwitchContext ; Call the scheduler to select the next task.
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| #endif
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| portRESTORE_CONTEXT ; Restore the context of the next task to run.
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| reti
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|
|
|
|
|
|
| ; REQUIRE ?CL78K0R_V2_L00
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| COMMON INTVEC:CODE:ROOT(1) ; Set ISR location to the Interrupt vector table.
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| ORG 68
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| `??MD_INTTM05??INTVEC 68`:
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| DW MD_INTTM05
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|
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| COMMON INTVEC:CODE:ROOT(1) ; Set ISR location to the Interrupt vector table.
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| ORG 126
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| `??vPortYield??INTVEC 126`:
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| DW vPortYield
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|
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| ; Set value for the usCriticalNesting.
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| RSEG NEAR_ID:CONST:SORT:NOROOT(1)
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| `?<Initializer for usCriticalNesting>`:
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| DW 10
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|
|
| ;#endif
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|
|
| END |