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142 lines
4.9 KiB
Plaintext
142 lines
4.9 KiB
Plaintext
; FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.
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;
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; This file is part of the FreeRTOS.org distribution.
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;
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; FreeRTOS.org is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 2 of the License, or
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; (at your option) any later version.
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;
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; FreeRTOS.org is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with FreeRTOS.org; if not, write to the Free Software
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; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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;
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; A special exception to the GPL can be applied should you wish to distribute
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; a combined work that includes FreeRTOS.org, without being obliged to provide
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; the source code for any proprietary components. See the licensing section
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; of http://www.FreeRTOS.org for full details of how and when the exception
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; can be applied.
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;
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; ***************************************************************************
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; See http://www.FreeRTOS.org for documentation, latest information, license
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; and contact details. Please ensure to read the configuration and relevant
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; port sections of the online documentation.
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; ***************************************************************************
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;
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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 |