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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
; FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.
;
; This file is part of the FreeRTOS.org distribution.
;
; FreeRTOS.org is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; FreeRTOS.org is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with FreeRTOS.org; if not, write to the Free Software
; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
;
; A special exception to the GPL can be applied should you wish to distribute
; a combined work that includes FreeRTOS.org, without being obliged to provide
; the source code for any proprietary components. See the licensing section
; of http://www.FreeRTOS.org for full details of how and when the exception
; can be applied.
;
; ***************************************************************************
; See http://www.FreeRTOS.org for documentation, latest information, license
; and contact details. Please ensure to read the configuration and relevant
; port sections of the online documentation.
; ***************************************************************************
;
;------------------------------------------------------------------------------
#include "ISR_Support.h"
;------------------------------------------------------------------------------
#if __CORE__ != __78K0R__
#error "This file is only for 78K0R Devices"
#endif
#define CS 0xFFFFC
#define ES 0xFFFFD
; Functions implemented in this file
;------------------------------------------------------------------------------
PUBLIC vPortYield
PUBLIC vPortStart
; Functions used by scheduler
;------------------------------------------------------------------------------
EXTERN vTaskSwitchContext
EXTERN vTaskIncrementTick
; Tick ISR Prototype
;------------------------------------------------------------------------------
EXTERN ?CL78K0R_V2_L00
PUBWEAK `??MD_INTTM05??INTVEC 68`
PUBLIC MD_INTTM05
MD_INTTM05 SYMBOL "MD_INTTM05"
`??MD_INTTM05??INTVEC 68` SYMBOL "??INTVEC 68", MD_INTTM05
;------------------------------------------------------------------------------
; Port Yield function to check for a Task switch in the cooperative mode
;
; Input: NONE
;
; Call: CALL vPortYield
;
; Output: NONE
;
;------------------------------------------------------------------------------
RSEG CODE:CODE
vPortYield:
portSAVE_CONTEXT ; Save the context of the current task.
call vTaskSwitchContext ; Call the scheduler.
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
RETB
;------------------------------------------------------------------------------
; Restore the context of the first task that is going to run.
;
; Input: NONE
;
; Call: CALL vPortStart
;
; Output: NONE
;
;------------------------------------------------------------------------------
RSEG CODE:CODE
vPortStart:
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
; POP PSW ; restore active task PSW
reti ; ... scheduler decided should run.
;------------------------------------------------------------------------------
; Perform the necessary steps of the Tick Count Increment and Task Switch
; depending on the chosen kernel configuration
;
; Input: NONE
;
; Call: ISR
;
; Output: NONE
;
;------------------------------------------------------------------------------
#if configUSE_PREEMPTION == 1
MD_INTTM05:
portSAVE_CONTEXT ; Save the context of the current task.
call vTaskIncrementTick ; Call the timer tick function.
call vTaskSwitchContext ; Call the scheduler.
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
RETI
#else
MD_INTTM05:
PUSH AX ; save necessary general purpose register...
PUSH HL ; ...used by the ISR
MOVW AX, CS ; save CS register
PUSH AX
CALL vTaskIncrementTick ; Call the timer tick function.
POP AX
MOVW CS, AX ; restore CS register
POP HL ; restore used general purpose registers
POP AX
RETI
#endif
REQUIRE ?CL78K0R_V2_L00
COMMON INTVEC:CODE:ROOT(1) ; set ISR location to the Interrupt vector table
ORG 68
`??MD_INTTM05??INTVEC 68`:
DW MD_INTTM05
COMMON INTVEC:CODE:ROOT(1) ; set ISR location to the Interrupt vector table
ORG 126
`??vPortYield??INTVEC 126`:
DW vPortYield
; set value for the usCriticalNesting
RSEG NEAR_ID:CONST:SORT:NOROOT(1)
`?<Initializer for usCriticalNesting>`:
DW 10
;#endif
END
|
