| ;/* |
| ; * FreeRTOS Kernel <DEVELOPMENT BRANCH> |
| ; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| ; * |
| ; * SPDX-License-Identifier: MIT |
| ; * |
| ; * Permission is hereby granted, free of charge, to any person obtaining a copy of |
| ; * this software and associated documentation files (the "Software"), to deal in |
| ; * the Software without restriction, including without limitation the rights to |
| ; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of |
| ; * the Software, and to permit persons to whom the Software is furnished to do so, |
| ; * subject to the following conditions: |
| ; * |
| ; * The above copyright notice and this permission notice shall be included in all |
| ; * copies or substantial portions of the Software. |
| ; * |
| ; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| ; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS |
| ; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR |
| ; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER |
| ; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| ; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| ; * |
| ; * https://www.FreeRTOS.org |
| ; * https://github.com/FreeRTOS |
| ; * |
| ; */ |
| |
| .import _pxCurrentTCB |
| .import _vTaskSwitchContext |
| .import _xTaskIncrementTick |
| |
| .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 #_xTaskIncrementTick, r0 |
| jsr @r0 |
| nop |
| |
| mov.l #_vTaskSwitchContext, r0 |
| jsr @r0 |
| nop |
| |
| portRESTORE_CONTEXT |
| |
| ;----------------------------------------------------------- |
| |
| _vPortCooperativeTick |
| |
| portSAVE_CONTEXT |
| |
| mov.l #_xTaskIncrementTick, 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 |