-
Notifications
You must be signed in to change notification settings - Fork 0
/
risccore.cpp
229 lines (193 loc) · 4.28 KB
/
risccore.cpp
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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
#include <QFile>
#include <QUrl>
#include "risccore.h"
#define SERIAL_ADDR 0x1000
#define GPO_ADDR 0x1001
#define GPI_ADDR 0x1002
void RiscCore::loadRom(QString filename)
{
QUrl url(filename);
QFile rom(url.toLocalFile());
char *pRomBytes;
uint32_t romSize;
destroyMemory(mpCore);
if (rom.open(QIODevice::ReadOnly) == false)
{
qCritical("Failed to open ROM File\n");
return;
}
romSize = static_cast<uint32_t>(rom.size());
initMemory(mpCore, romSize);
pRomBytes = reinterpret_cast<char*>(malloc(romSize));
if (pRomBytes == nullptr)
{
qCritical("Failed to create buffer for ROM load\n");
return;
}
rom.read(pRomBytes, rom.size());
loadMemory(mpCore, reinterpret_cast<uint8_t*>(pRomBytes), 0, romSize);
qDebug("Rom Loaded Successfully");
}
quint32 RiscCore::pc() const
{
return mpCore->pc;
}
QString RiscCore::rpString() const
{
return mRpString;
}
QString RiscCore::serialString() const
{
return mSerialString;
}
quint8 RiscCore::gpo() const
{
return mGpo;
}
void RiscCore::setPc(quint32 pc)
{
if (mPrevPc == pc)
return;
mPrevPc = pc;
mpCore->pc = pc;
emit pcChanged(mPrevPc);
}
void RiscCore::writeRpS(QString rpString)
{
if (mRpString == rpString)
return;
mRpString = rpString;
emit rpsChanged(mRpString);
}
void RiscCore::writeSerialString(QString serialString)
{
if (mSerialString == serialString)
return;
mSerialString = serialString;
emit serialStringChanged(mSerialString);
}
void RiscCore::writeGpo(quint8 gpo)
{
if (mGpo == gpo)
return;
mGpo = gpo;
emit gpoChanged(mGpo);
}
void RiscCore::EmulateSerial()
{
if (mpCore->mmu.pMemory[SERIAL_ADDR] != 0)
{
QString temp = mSerialString +
static_cast<char>(mpCore->mmu.pMemory[SERIAL_ADDR]);
writeSerialString(temp);
mpCore->mmu.pMemory[SERIAL_ADDR] = 0;
}
}
void RiscCore::EmulateGpioOutput()
{
writeGpo(mpCore->mmu.pMemory[GPO_ADDR]);
}
void RiscCore::RunCore()
{
coreExecute(mpCore);
EmulateSerial();
EmulateGpioOutput();
}
void RiscCore::RunFunc()
{
sig_atomic_t tempStatus = mThreadStatus;
sig_atomic_t prevStatus = mThreadStatus;
while (mThreadStatus != threadStatus::done)
{
tempStatus = mThreadStatus;
if (prevStatus != tempStatus)
{
switch (tempStatus)
{
case threadStatus::stop:
writeRpS("Play");
writeSerialString("");
break;
default:
break;
}
}
switch (tempStatus)
{
case threadStatus::run:
RunCore();
break;
case threadStatus::pause:
setPc(mpCore->pc);
break;
case threadStatus::stop:
setPc(0);
break;
case threadStatus::done:
break;
default:
qFatal("Thread Status unknown value\n");
}
prevStatus = tempStatus;
}
}
void RiscCore::StartThread()
{
mThreadStatus = threadStatus::stop;
std::function<void(void)> threadFunc = std::bind(&RiscCore::RunFunc, this);
mCoreThread = std::thread(threadFunc);
}
void RiscCore::StopThread()
{
mThreadStatus = threadStatus::done;
while (mCoreThread.joinable() != true) {}
mCoreThread.join();
}
void RiscCore::runPauseCore()
{
if (mThreadStatus == run)
{
writeRpS("Play");
mThreadStatus = threadStatus::pause;
}
else
{
writeRpS("Pause");
mThreadStatus = threadStatus::run;
}
}
void RiscCore::stopCore()
{
mThreadStatus = threadStatus::stop;
}
void RiscCore::resetCore()
{
}
void RiscCore::gpiChanged(quint8 gpi, quint8 value)
{
uint8_t gpiValue = mpCore->mmu.pMemory[GPI_ADDR];
if (value != 0)
{
gpiValue |= 1<<gpi;
}
else
{
gpiValue &= (0xFF ^ (1<<gpi));
}
mpCore->mmu.pMemory[GPI_ADDR] = gpiValue;
}
RiscCore::RiscCore(QObject *parent) : QObject(parent)
{
initCore(&mpCore);
mPrevPc = 0;
writeRpS("Play");
writeSerialString("");
writeGpo(0);
mThreadStatus = threadStatus::stop;
}
RiscCore::~RiscCore()
{
StopThread();
destroyMemory(mpCore);
destroyCore(mpCore);
}