2 ; * FreeRTOS Kernel V10.2.1
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3 ; * Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 ; * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 ; * this software and associated documentation files (the "Software"), to deal in
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7 ; * the Software without restriction, including without limitation the rights to
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8 ; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 ; * the Software, and to permit persons to whom the Software is furnished to do so,
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10 ; * subject to the following conditions:
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12 ; * The above copyright notice and this permission notice shall be included in all
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13 ; * copies or substantial portions of the Software.
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15 ; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 ; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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17 ; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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18 ; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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19 ; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 ; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 ; * http://www.FreeRTOS.org
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23 ; * http://aws.amazon.com/freertos
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25 ; * 1 tab == 4 spaces!
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27 .macro portSAVE_CONTEXT
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29 ; Save r0 to r14 and pr.
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32 ; Save mac1, mach and gbr
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37 ; Get the address of pxCurrentTCB
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38 mov.l #_pxCurrentTCB, r0
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40 ; Get the address of pxTopOfStack from the TCB.
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43 ; Save the stack pointer in pxTopOfStack.
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48 ;-----------------------------------------------------------
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50 .macro portRESTORE_CONTEXT
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52 ; Get the address of the pxCurrentTCB variable.
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53 mov.l #_pxCurrentTCB, r0
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55 ; Get the address of the task stack from pxCurrentTCB.
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58 ; Get the task stack itself into the stack pointer.
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61 ; Restore system registers.
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66 ; Restore r0 to r14 and PR
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69 ; Pop the SR and PC to jump to the start of the task.
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74 ;-----------------------------------------------------------