;/* | |
; FreeRTOS V7.2.0 - Copyright (C) 2012 Real Time Engineers Ltd. | |
; | |
; | |
; *************************************************************************** | |
; * * | |
; * FreeRTOS tutorial books are available in pdf and paperback. * | |
; * Complete, revised, and edited pdf reference manuals are also * | |
; * available. * | |
; * * | |
; * Purchasing FreeRTOS documentation will not only help you, by * | |
; * ensuring you get running as quickly as possible and with an * | |
; * in-depth knowledge of how to use FreeRTOS, it will also help * | |
; * the FreeRTOS project to continue with its mission of providing * | |
; * professional grade, cross platform, de facto standard solutions * | |
; * for microcontrollers - completely free of charge! * | |
; * * | |
; * >>> See http://www.FreeRTOS.org/Documentation for details. <<< * | |
; * * | |
; * Thank you for using FreeRTOS, and 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 modification 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. | |
;*/ | |
.import _pxCurrentTCB | |
.import _vTaskSwitchContext | |
.import _vTaskIncrementTick | |
.export _vPortStartFirstTask | |
.export _ulPortGetGBR | |
.export _vPortYieldHandler | |
.export _vPortPreemptiveTick | |
.export _vPortCooperativeTick | |
.export _vPortSaveFlopRegisters | |
.export _vPortRestoreFlopRegisters | |
.section P | |
.INCLUDE "ISR_Support.inc" | |
_vPortStartFirstTask: | |
portRESTORE_CONTEXT | |
;----------------------------------------------------------- | |
_vPortYieldHandler: | |
portSAVE_CONTEXT | |
mov.l #_vTaskSwitchContext, r0 | |
jsr @r0 | |
nop | |
portRESTORE_CONTEXT | |
;----------------------------------------------------------- | |
_vPortPreemptiveTick | |
portSAVE_CONTEXT | |
mov.l #_vTaskIncrementTick, r0 | |
jsr @r0 | |
nop | |
mov.l #_vTaskSwitchContext, r0 | |
jsr @r0 | |
nop | |
portRESTORE_CONTEXT | |
;----------------------------------------------------------- | |
_vPortCooperativeTick | |
portSAVE_CONTEXT | |
mov.l #_vTaskIncrementTick, r0 | |
jsr @r0 | |
nop | |
portRESTORE_CONTEXT | |
;----------------------------------------------------------- | |
_ulPortGetGBR: | |
stc.l gbr, r0 | |
rts | |
nop | |
;----------------------------------------------------------- | |
_vPortSaveFlopRegisters: | |
fmov.s fr0, @-r4 | |
fmov.s fr1, @-r4 | |
fmov.s fr2, @-r4 | |
fmov.s fr3, @-r4 | |
fmov.s fr4, @-r4 | |
fmov.s fr5, @-r4 | |
fmov.s fr6, @-r4 | |
fmov.s fr7, @-r4 | |
fmov.s fr8, @-r4 | |
fmov.s fr9, @-r4 | |
fmov.s fr10, @-r4 | |
fmov.s fr11, @-r4 | |
fmov.s fr12, @-r4 | |
fmov.s fr13, @-r4 | |
fmov.s fr14, @-r4 | |
fmov.s fr15, @-r4 | |
sts.l fpul, @-r4 | |
sts.l fpscr, @-r4 | |
rts | |
nop | |
;----------------------------------------------------------- | |
_vPortRestoreFlopRegisters: | |
add.l #-72, r4 | |
lds.l @r4+, fpscr | |
lds.l @r4+, fpul | |
fmov.s @r4+, fr15 | |
fmov.s @r4+, fr14 | |
fmov.s @r4+, fr13 | |
fmov.s @r4+, fr12 | |
fmov.s @r4+, fr11 | |
fmov.s @r4+, fr10 | |
fmov.s @r4+, fr9 | |
fmov.s @r4+, fr8 | |
fmov.s @r4+, fr7 | |
fmov.s @r4+, fr6 | |
fmov.s @r4+, fr5 | |
fmov.s @r4+, fr4 | |
fmov.s @r4+, fr3 | |
fmov.s @r4+, fr2 | |
fmov.s @r4+, fr1 | |
fmov.s @r4+, fr0 | |
rts | |
nop | |
.end | |