1;/*
2; * FreeRTOS Kernel V11.1.0
3; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
4; *
5; * SPDX-License-Identifier: MIT
6; *
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:
13; *
14; * The above copyright notice and this permission notice shall be included in all
15; * copies or substantial portions of the Software.
16; *
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.
23; *
24; * https://www.FreeRTOS.org
25; * https://github.com/FreeRTOS
26; *
27; */
28
29#include "portmacro.h"
30
31    EXTERN    _vTaskSwitchContext
32    EXTERN    _xTaskIncrementTick
33
34    EXTERN    _interrupt_vector_table
35
36    PUBLIC    _vPortYield
37    PUBLIC    _vPortStartFirstTask
38    PUBLIC    _vPortTickISR
39
40#if !defined(__IASMRL78__) || (__VER__ < 310)
41    #error "This port requires the IAR Assembler for RL78 version 3.10 or later."
42#endif
43
44;-------------------------------------------------------------------------------
45;   FreeRTOS yield handler.  This is installed as the BRK software interrupt
46;   handler.
47;-------------------------------------------------------------------------------
48    SECTION  `.text`:CODE:ROOT(1)
49_vPortYield:
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.
53    RETB
54;-------------------------------------------------------------------------------
55
56
57;-------------------------------------------------------------------------------
58;   Starts the scheduler by restoring the context of the task that will execute
59;   first.
60;-------------------------------------------------------------------------------
61    SECTION  `.text`:CODE:ROOT(1)
62_vPortStartFirstTask:
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;-------------------------------------------------------------------------------
67
68
69;-------------------------------------------------------------------------------
70;   FreeRTOS Timer Tick handler.
71;   This is installed as the interval timer interrupt handler.
72;-------------------------------------------------------------------------------
73    SECTION  `.text`:CODE:ROOT(1)
74_vPortTickISR:
75    portSAVE_CONTEXT               ; Save the context of the current task.
76    RCALL    (_xTaskIncrementTick) ; Call the timer tick function.
77    CMPW    AX, #0x00
78    SKZ
79    RCALL    (_vTaskSwitchContext) ; Call the scheduler to select the next task.
80    portRESTORE_CONTEXT            ; Restore the context of the next task to run.
81    RETI
82;-------------------------------------------------------------------------------
83
84    END
85