1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
;/*
; * FreeRTOS Kernel V10.5.1
; * 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
; *
; */
#include "portmacro.h"
EXTERN _vTaskSwitchContext
EXTERN _xTaskIncrementTick
EXTERN _interrupt_vector_table
PUBLIC _vPortYield
PUBLIC _vPortStartFirstTask
PUBLIC _vPortTickISR
#if !defined(__IASMRL78__) || (__VER__ < 310)
#error "This port requires the IAR Assembler for RL78 version 3.10 or later."
#endif
;-------------------------------------------------------------------------------
; FreeRTOS yield handler. This is installed as the BRK software interrupt
; handler.
;-------------------------------------------------------------------------------
SECTION `.text`:CODE:ROOT(1)
_vPortYield:
portSAVE_CONTEXT ; Save the context of the current task.
RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
portRESTORE_CONTEXT ; Restore the context of the next task to run.
RETB
;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
; Starts the scheduler by restoring the context of the task that will execute
; first.
;-------------------------------------------------------------------------------
SECTION `.text`:CODE:ROOT(1)
_vPortStartFirstTask:
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
RETI ; An interrupt stack frame is used so the
; task is started using a RETI instruction.
;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
; FreeRTOS Timer Tick handler.
; This is installed as the interval timer interrupt handler.
;-------------------------------------------------------------------------------
SECTION `.text`:CODE:ROOT(1)
_vPortTickISR:
portSAVE_CONTEXT ; Save the context of the current task.
RCALL (_xTaskIncrementTick) ; Call the timer tick function.
CMPW AX, #0x00
SKZ
RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
portRESTORE_CONTEXT ; Restore the context of the next task to run.
RETI
;-------------------------------------------------------------------------------
END
|
