Subversion Repositories openrisc_2011-10-31

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

;
; This file defines a wrapper for the interrupt generated each time the button
; on the target board is pushed.  The asm wrapper is used to save and restore
; the task context as a context switch may occur within the ISR itself.
; The C portion of the ISR is defined within ButtonTask.c.
;

; Include the portSAVE_CONTEXT and portRESTORE_CONTEXT macros.
#include "ISR_Support.h"

        PUBLIC    vButtonISRWrapper
        EXTERN    vButtonISRHandler

    RSEG CODE:CODE
        
vButtonISRWrapper:
        ; Save the current task context.        
        portSAVE_CONTEXT

        ; Call the C portion of the ISR.
        call vButtonISRHandler

        ; Restore the context of whichever task is to run next - which might be
        ; different from the task that was originally interrupted.
        portRESTORE_CONTEXT
        reti



        ; Place the ISR into the vector table.
        COMMON INTVEC:CODE:ROOT(1)
        ORG 8
`??vButtonISRWrapper??INTVEC 8`:
        DW vButtonISRWrapper


        END