;/* | |
; * FreeRTOS Kernel <DEVELOPMENT BRANCH> | |
; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
; * | |
; * SPDX-License-Identifier: MIT | |
; * | |
; * Permission is hereby granted, free of charge, to any person obtaining a copy of | |
; * this software and associated documentation files (the "Software"), to deal in | |
; * the Software without restriction, including without limitation the rights to | |
; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | |
; * the Software, and to permit persons to whom the Software is furnished to do so, | |
; * subject to the following conditions: | |
; * | |
; * The above copyright notice and this permission notice shall be included in all | |
; * copies or substantial portions of the Software. | |
; * | |
; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | |
; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | |
; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
; * | |
; * https://www.FreeRTOS.org | |
; * https://github.com/FreeRTOS | |
; * | |
; */ | |
#include "ISR_Support.h" | |
;------------------------------------------------------------------------------ | |
#if __CORE__ != __78K0R__ | |
#error "This file is only for 78K0R Devices" | |
#endif | |
#define CS 0xFFFFC | |
#define ES 0xFFFFD | |
; Functions implemented in this file | |
;------------------------------------------------------------------------------ | |
PUBLIC vPortYield | |
PUBLIC vPortStart | |
; Functions used by scheduler | |
;------------------------------------------------------------------------------ | |
EXTERN vTaskSwitchContext | |
EXTERN xTaskIncrementTick | |
; Tick ISR Prototype | |
;------------------------------------------------------------------------------ | |
; EXTERN ?CL78K0R_V2_L00 | |
PUBWEAK `??MD_INTTM05??INTVEC 68` | |
PUBLIC MD_INTTM05 | |
MD_INTTM05 SYMBOL "MD_INTTM05" | |
`??MD_INTTM05??INTVEC 68` SYMBOL "??INTVEC 68", MD_INTTM05 | |
;------------------------------------------------------------------------------ | |
; Yield to another task. Implemented as a software interrupt. The return | |
; address and PSW will have been saved to the stack automatically before | |
; this code runs. | |
; | |
; Input: NONE | |
; | |
; Call: CALL vPortYield | |
; | |
; Output: NONE | |
; | |
;------------------------------------------------------------------------------ | |
RSEG CODE:CODE | |
vPortYield: | |
portSAVE_CONTEXT ; Save the context of the current task. | |
call vTaskSwitchContext ; Call the scheduler to select the next task. | |
portRESTORE_CONTEXT ; Restore the context of the next task to run. | |
retb | |
;------------------------------------------------------------------------------ | |
; Restore the context of the first task that is going to run. | |
; | |
; Input: NONE | |
; | |
; Call: CALL vPortStart | |
; | |
; Output: NONE | |
; | |
;------------------------------------------------------------------------------ | |
RSEG CODE:CODE | |
vPortStart: | |
portRESTORE_CONTEXT ; Restore the context of whichever task the ... | |
reti ; An interrupt stack frame is used so the task | |
; is started using a RETI instruction. | |
;------------------------------------------------------------------------------ | |
; Perform the necessary steps of the Tick Count Increment and Task Switch | |
; depending on the chosen kernel configuration | |
; | |
; Input: NONE | |
; | |
; Call: ISR | |
; | |
; Output: NONE | |
; | |
;------------------------------------------------------------------------------ | |
MD_INTTM05: | |
portSAVE_CONTEXT ; Save the context of the current task. | |
call xTaskIncrementTick ; Call the timer tick function. | |
#if configUSE_PREEMPTION == 1 | |
call vTaskSwitchContext ; Call the scheduler to select the next task. | |
#endif | |
portRESTORE_CONTEXT ; Restore the context of the next task to run. | |
reti | |
; REQUIRE ?CL78K0R_V2_L00 | |
COMMON INTVEC:CODE:ROOT(1) ; Set ISR location to the Interrupt vector table. | |
ORG 68 | |
`??MD_INTTM05??INTVEC 68`: | |
DW MD_INTTM05 | |
COMMON INTVEC:CODE:ROOT(1) ; Set ISR location to the Interrupt vector table. | |
ORG 126 | |
`??vPortYield??INTVEC 126`: | |
DW vPortYield | |
; Set value for the usCriticalNesting. | |
RSEG NEAR_ID:CONST:SORT:NOROOT(1) | |
`?<Initializer for usCriticalNesting>`: | |
DW 10 | |
;#endif | |
END |