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
|
/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CHCORE_H_
#define _CHCORE_H_
/*
* Interrupt saved context.
*/
struct extctx {
BYTE8 _next;
BYTE8 r31;
BYTE8 r30;
BYTE8 r27;
BYTE8 r26;
BYTE8 r25;
BYTE8 r24;
BYTE8 r23;
BYTE8 r22;
BYTE8 r21;
BYTE8 r20;
BYTE8 r19;
BYTE8 r18;
BYTE8 sr;
BYTE8 r1;
BYTE8 r0;
UWORD16 pc;
};
/*
* System saved context.
*/
struct intctx {
BYTE8 _next;
BYTE8 r29;
BYTE8 r28;
BYTE8 r17;
BYTE8 r16;
BYTE8 r15;
BYTE8 r14;
BYTE8 r13;
BYTE8 r12;
BYTE8 r11;
BYTE8 r10;
#ifndef CH_CURRP_REGISTER_CACHE
BYTE8 r9;
BYTE8 r8;
#endif
BYTE8 r7;
BYTE8 r6;
BYTE8 r5;
BYTE8 r4;
BYTE8 r3;
BYTE8 r2;
BYTE8 pcl;
BYTE8 pch;
};
/*
* Port dependent part of the Thread structure, you may add fields in
* this structure.
*/
typedef struct {
struct intctx *sp;
} Context;
/**
* Platform dependent part of the \p chThdCreate() API.
*/
#define SETUP_CONTEXT(workspace, wsize, pf, arg) { \
tp->p_ctx.sp = (struct intctx*)((BYTE8 *)workspace + wsize - 1 - \
(sizeof(struct intctx) - 1)); \
tp->p_ctx.sp->r2 = (int)pf; \
tp->p_ctx.sp->r3 = (int)pf >> 8; \
tp->p_ctx.sp->r4 = (int)arg; \
tp->p_ctx.sp->r5 = (int)arg >> 8; \
tp->p_ctx.sp->pcl = (int)threadstart >> 8; \
tp->p_ctx.sp->pch = (int)threadstart; \
}
#define INT_REQUIRED_STACK 0x10
#define StackAlign(n) (n)
#define UserStackSize(n) StackAlign(sizeof(Thread) + \
(sizeof(struct intctx) - 1) + \
(sizeof(struct extctx) - 1) + \
(n) + (INT_REQUIRED_STACK))
#define WorkingArea(s, n) BYTE8 s[UserStackSize(n)];
#define chSysLock() asm volatile ("cli")
#define chSysUnlock() asm volatile ("sei")
#define chSysIRQEnterI() \
asm ("" : : : "r18", "r19", "r20", "r21", "r22", "r23", "r24", \
"r25", "r26", "r27", "r30", "r31");
#define chSysIRQExitI() { \
if (chSchRescRequiredI()) \
chSchDoRescheduleI(); \
}
#define IDLE_THREAD_STACK_SIZE 8
void _IdleThread(void *p) __attribute__((noreturn));
void chSysHalt(void) __attribute__((noreturn)) ;
void chSysSwitchI(Thread *otp, Thread *ntp);
void chSysPuts(char *msg);
void threadstart(void) __attribute__((naked));
#endif /* _CHCORE_H_ */
|
