| ;/*
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| ; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
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| ; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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| ; *
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| ; * SPDX-License-Identifier: MIT |
| ; * |
| ; * Permission is hereby granted, free of charge, to any person obtaining a copy of
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| ; * this software and associated documentation files (the "Software"), to deal in
|
| ; * the Software without restriction, including without limitation the rights to
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| ; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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| ; * the Software, and to permit persons to whom the Software is furnished to do so,
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| ; * subject to the following conditions:
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| ; *
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| ; * The above copyright notice and this permission notice shall be included in all
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| ; * copies or substantial portions of the Software.
|
| ; *
|
| ; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| ; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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| ; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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| ; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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| ; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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| ; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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| ; *
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| ; * https://www.FreeRTOS.org
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| ; * https://github.com/FreeRTOS
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| ; *
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| ; */
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|
|
| .import _pxCurrentTCB
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| .import _vTaskSwitchContext
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| .import _xTaskIncrementTick
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|
|
| .export _vPortStartFirstTask
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| .export _ulPortGetGBR
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| .export _vPortYieldHandler
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| .export _vPortPreemptiveTick
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| .export _vPortCooperativeTick
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| .export _vPortSaveFlopRegisters
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| .export _vPortRestoreFlopRegisters
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|
|
| .section P
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|
|
| .INCLUDE "ISR_Support.inc"
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|
|
| _vPortStartFirstTask:
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|
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| portRESTORE_CONTEXT
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|
|
| ;-----------------------------------------------------------
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|
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| _vPortYieldHandler:
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|
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| portSAVE_CONTEXT
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|
|
| mov.l #_vTaskSwitchContext, r0
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| jsr @r0
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| nop
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|
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| portRESTORE_CONTEXT
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|
|
| ;-----------------------------------------------------------
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|
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| _vPortPreemptiveTick
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|
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| portSAVE_CONTEXT
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|
|
| mov.l #_xTaskIncrementTick, r0
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| jsr @r0
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| nop
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|
|
| mov.l #_vTaskSwitchContext, r0
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| jsr @r0
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| nop
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|
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| portRESTORE_CONTEXT
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|
|
| ;-----------------------------------------------------------
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|
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| _vPortCooperativeTick
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|
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| portSAVE_CONTEXT
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|
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| mov.l #_xTaskIncrementTick, r0
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| jsr @r0
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| nop
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|
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| portRESTORE_CONTEXT
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|
|
| ;-----------------------------------------------------------
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|
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| _ulPortGetGBR:
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|
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| stc.l gbr, r0
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| rts
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| nop
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|
|
| ;-----------------------------------------------------------
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|
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| _vPortSaveFlopRegisters:
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|
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| fmov.s fr0, @-r4
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| fmov.s fr1, @-r4
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| fmov.s fr2, @-r4
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| fmov.s fr3, @-r4
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| fmov.s fr4, @-r4
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| fmov.s fr5, @-r4
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| fmov.s fr6, @-r4
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| fmov.s fr7, @-r4
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| fmov.s fr8, @-r4
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| fmov.s fr9, @-r4
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| fmov.s fr10, @-r4
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| fmov.s fr11, @-r4
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| fmov.s fr12, @-r4
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| fmov.s fr13, @-r4
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| fmov.s fr14, @-r4
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| fmov.s fr15, @-r4
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| sts.l fpul, @-r4
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| sts.l fpscr, @-r4
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|
|
| rts
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| nop
|
|
|
| ;-----------------------------------------------------------
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|
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| _vPortRestoreFlopRegisters:
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|
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| add.l #-72, r4
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| lds.l @r4+, fpscr
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| lds.l @r4+, fpul
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| fmov.s @r4+, fr15
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| fmov.s @r4+, fr14
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| fmov.s @r4+, fr13
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| fmov.s @r4+, fr12
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| fmov.s @r4+, fr11
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| fmov.s @r4+, fr10
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| fmov.s @r4+, fr9
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| fmov.s @r4+, fr8
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| fmov.s @r4+, fr7
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| fmov.s @r4+, fr6
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| fmov.s @r4+, fr5
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| fmov.s @r4+, fr4
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| fmov.s @r4+, fr3
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| fmov.s @r4+, fr2
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| fmov.s @r4+, fr1
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| fmov.s @r4+, fr0
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|
|
| rts
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| nop
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|
|
| .end
|
|
|