blob: facdea31ccefa3638c4f571f60d8137b78d54305 (
plain)
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
|
#include <windows.h>
#include <stdio.h>
#undef CDECL
#include <ch.h>
static LARGE_INTEGER nextcnt;
static LARGE_INTEGER slice;
void InitSimCom1(void);
void InitSimCom2(void);
BOOL Com1ConnInterruptSimCom(void);
BOOL Com2ConnInterruptSimCom(void);
BOOL Com1InInterruptSimCom(void);
BOOL Com2InInterruptSimCom(void);
BOOL Com1OutInterruptSimCom(void);
BOOL Com2OutInterruptSimCom(void);
/*
* Simulated HW initialization.
*/
void InitCore(void) {
WSADATA wsaData;
// Initialization.
if (WSAStartup(2, &wsaData) != 0) {
printf("Unable to locate a winsock DLL\n");
exit(1);
}
printf("Win32 ChibiOS/RT simulator\n\n");
printf("Thread structure %d bytes\n", sizeof(Thread));
if (!QueryPerformanceFrequency(&slice)) {
printf("QueryPerformanceFrequency() error");
exit(1);
}
printf("Core Frequency %u Hz\n", slice.LowPart);
slice.QuadPart /= CH_FREQUENCY;
QueryPerformanceCounter(&nextcnt);
nextcnt.QuadPart += slice.QuadPart;
InitSimCom1();
InitSimCom2();
}
/*
* Interrupt simulation.
*/
void ChkIntSources(void) {
LARGE_INTEGER n;
if (Com1InInterruptSimCom() || Com2InInterruptSimCom() ||
Com1OutInterruptSimCom() || Com2OutInterruptSimCom() ||
Com1ConnInterruptSimCom() || Com2ConnInterruptSimCom()) {
if (chSchRescRequiredI())
chSchDoRescheduleI();
return;
}
// Interrupt Timer simulation (10ms interval).
QueryPerformanceCounter(&n);
if (n.QuadPart > nextcnt.QuadPart) {
nextcnt.QuadPart += slice.QuadPart;
chSysTimerHandlerI();
if (chSchRescRequiredI())
chSchDoRescheduleI();
}
}
t_msg _IdleThread(void *p) {
chThdSetPriority(IDLEPRIO);
while (TRUE) {
ChkIntSources();
Sleep(0);
}
}
__declspec(naked) void __fastcall chSysHalt(void) {
exit(2);
}
__declspec(naked) void __fastcall chSysSwitchI(Thread *otp, Thread *ntp) {
__asm {
// Switch out code
push ebp
push esi
push edi
push ebx
mov dword ptr 16[ecx],esp
// Switch in code
mov esp,16[edx]
pop ebx
pop edi
pop esi
pop ebp
ret
}
}
__declspec(naked) void __fastcall threadexit(void) {
__asm {
// add esp,4 ; The thread parameter
push eax ; The exit code returned by the thread
call chThdExit
add esp,4
call chSysHalt ; Should *never* happen
}
}
|
