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163 lines
6.4 KiB
Plaintext
163 lines
6.4 KiB
Plaintext
;/*
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; FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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;
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; ***************************************************************************
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; * *
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; * If you are: *
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; * *
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; * + New to FreeRTOS, *
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; * + Wanting to learn FreeRTOS or multitasking in general quickly *
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; * + Looking for basic training, *
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; * + Wanting to improve your FreeRTOS skills and productivity *
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; * *
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; * then take a look at the FreeRTOS books - available as PDF or paperback *
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; * *
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; * "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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; * http://www.FreeRTOS.org/Documentation *
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; * *
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; * A pdf reference manual is also available. Both are usually delivered *
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; * to your inbox within 20 minutes to two hours when purchased between 8am *
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; * and 8pm GMT (although please allow up to 24 hours in case of *
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; * exceptional circumstances). Thank you for your support! *
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; * *
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; ***************************************************************************
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;
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; This file is part of the FreeRTOS distribution.
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;
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; FreeRTOS is free software; you can redistribute it and/or modify it under
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; the terms of the GNU General Public License (version 2) as published by the
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; Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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; ***NOTE*** The exception to the GPL is included to allow you to distribute
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; a combined work that includes FreeRTOS without being obliged to provide the
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; source code for proprietary components outside of the FreeRTOS kernel.
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; FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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; more details. You should have received a copy of the GNU General Public
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; License and the FreeRTOS license exception along with FreeRTOS; if not it
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; can be viewed here: http://www.freertos.org/a00114.html and also obtained
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; by writing to Richard Barry, contact details for whom are available on the
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; FreeRTOS WEB site.
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;
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; 1 tab == 4 spaces!
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;
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; http://www.FreeRTOS.org - Documentation, latest information, license and
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; contact details.
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;
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; http://www.SafeRTOS.com - A version that is certified for use in safety
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; critical systems.
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;
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; http://www.OpenRTOS.com - Commercial support, development, porting,
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; licensing and training services.
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;*/
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#include "ISR_Support.h"
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;------------------------------------------------------------------------------
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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 vTaskIncrementTick
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; Tick ISR Prototype
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;------------------------------------------------------------------------------
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; EXTERN ?CL78K0R_V2_L00
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PUBWEAK `??MD_INTTM05??INTVEC 68`
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PUBLIC MD_INTTM05
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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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; 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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; 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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; 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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MD_INTTM05:
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portSAVE_CONTEXT ; Save the context of the current task.
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call vTaskIncrementTick ; 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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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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; 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 |