2 ; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
3 ; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 ; * SPDX-License-Identifier: MIT
7 ; * Permission is hereby granted, free of charge, to any person obtaining a copy of
8 ; * this software and associated documentation files (the "Software"), to deal in
9 ; * the Software without restriction, including without limitation the rights to
10 ; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
11 ; * the Software, and to permit persons to whom the Software is furnished to do so,
12 ; * subject to the following conditions:
14 ; * The above copyright notice and this permission notice shall be included in all
15 ; * copies or substantial portions of the Software.
17 ; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 ; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
19 ; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
20 ; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
21 ; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 ; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 ; * https://www.FreeRTOS.org
25 ; * https://github.com/FreeRTOS
29 #include "portmacro.h"
31 EXTERN _vTaskSwitchContext
32 EXTERN _xTaskIncrementTick
34 EXTERN _interrupt_vector_table
37 PUBLIC _vPortStartFirstTask
40 #if !defined(__IASMRL78__) || (__VER__ < 310)
41 #error "This port requires the IAR Assembler for RL78 version 3.10 or later."
44 ;-------------------------------------------------------------------------------
45 ; FreeRTOS yield handler. This is installed as the BRK software interrupt
47 ;-------------------------------------------------------------------------------
48 SECTION `.text`:CODE:ROOT(1)
50 portSAVE_CONTEXT ; Save the context of the current task.
51 RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
52 portRESTORE_CONTEXT ; Restore the context of the next task to run.
54 ;-------------------------------------------------------------------------------
57 ;-------------------------------------------------------------------------------
58 ; Starts the scheduler by restoring the context of the task that will execute
60 ;-------------------------------------------------------------------------------
61 SECTION `.text`:CODE:ROOT(1)
63 portRESTORE_CONTEXT ; Restore the context of whichever task the ...
64 RETI ; An interrupt stack frame is used so the
65 ; task is started using a RETI instruction.
66 ;-------------------------------------------------------------------------------
69 ;-------------------------------------------------------------------------------
70 ; FreeRTOS Timer Tick handler.
71 ; This is installed as the interval timer interrupt handler.
72 ;-------------------------------------------------------------------------------
73 SECTION `.text`:CODE:ROOT(1)
75 portSAVE_CONTEXT ; Save the context of the current task.
76 RCALL (_xTaskIncrementTick) ; Call the timer tick function.
79 RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
80 portRESTORE_CONTEXT ; Restore the context of the next task to run.
82 ;-------------------------------------------------------------------------------