aboutsummaryrefslogtreecommitdiff
path: root/qtmips_gui/mainwindow.cpp
blob: c4f57f5c9eede7767579a488af6b60d32d5abc3c (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
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
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
 * QtMips - MIPS 32-bit Architecture Subset Simulator
 *
 * Implemented to support following courses:
 *
 *   B35APO - Computer Architectures
 *   https://cw.fel.cvut.cz/wiki/courses/b35apo
 *
 *   B4M35PAP - Advanced Computer Architectures
 *   https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
 *
 * Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
 * Copyright (c) 2019      Pavel Pisa <pisa@cmp.felk.cvut.cz>
 *
 * Faculty of Electrical Engineering (http://www.fel.cvut.cz)
 * Czech Technical University        (http://www.cvut.cz/)
 *
 * This program 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.
 *
 * This program 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 ******************************************************************************/

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) {
    machine = nullptr;
    corescene = nullptr;
    settings = new QSettings("CTU", "QtMips");

    ui = new Ui::MainWindow();
    ui->setupUi(this);
    setWindowTitle("QtMips");

    // Prepare empty core view
    coreview  = new GraphicsView(this);
    this->setCentralWidget(coreview);
    // Create/prepare other widgets
    ndialog = new NewDialog(this, settings);
    registers = new RegistersDock(this);
    registers->hide();
    program = new ProgramDock(this, settings);
    program->hide();
    memory = new MemoryDock(this, settings);
    memory->hide();
    cache_program = new CacheDock(this, "Program");
    cache_program->hide();
    cache_data = new CacheDock(this, "Data");
    cache_data->hide();

    // Execution speed actions
    speed_group = new QActionGroup(this);
    speed_group->addAction(ui->ips1);
    speed_group->addAction(ui->ips2);
    speed_group->addAction(ui->ips5);
    speed_group->addAction(ui->ips10);
    speed_group->addAction(ui->ipsUnlimited);
    ui->ips1->setChecked(true);

    // Connect signals from menu
    connect(ui->actionExit, SIGNAL(triggered(bool)), this, SLOT(close()));
    connect(ui->actionNew, SIGNAL(triggered(bool)), this, SLOT(new_machine()));
    connect(ui->actionReload, SIGNAL(triggered(bool)), this, SLOT(machine_reload()));
    connect(ui->actionRegisters, SIGNAL(triggered(bool)), this, SLOT(show_registers()));
    connect(ui->actionProgram_memory, SIGNAL(triggered(bool)), this, SLOT(show_program()));
    connect(ui->actionMemory, SIGNAL(triggered(bool)), this, SLOT(show_memory()));
    connect(ui->actionProgram_Cache, SIGNAL(triggered(bool)), this, SLOT(show_cache_program()));
    connect(ui->actionData_Cache, SIGNAL(triggered(bool)), this, SLOT(show_cache_data()));
    connect(ui->ips1, SIGNAL(toggled(bool)), this, SLOT(set_speed()));
    connect(ui->ips2, SIGNAL(toggled(bool)), this, SLOT(set_speed()));
    connect(ui->ips5, SIGNAL(toggled(bool)), this, SLOT(set_speed()));
    connect(ui->ips10, SIGNAL(toggled(bool)), this, SLOT(set_speed()));
    connect(ui->ipsUnlimited, SIGNAL(toggled(bool)), this, SLOT(set_speed()));

    // Restore application state from settings
    restoreState(settings->value("windowState").toByteArray());
    restoreGeometry(settings->value("windowGeometry").toByteArray());
}

MainWindow::~MainWindow() {
    if (corescene != nullptr)
        delete corescene;
    if (coreview != nullptr)
        delete coreview;
    delete ndialog;
    delete registers;
    delete program;
    delete memory;
    delete cache_program;
    delete cache_data;
    delete ui;
    if (machine != nullptr)
        delete machine;
    settings->sync();
    delete settings;
}

void MainWindow::start() {
    this->show();
    ndialog->show();
}

void MainWindow::create_core(const machine::MachineConfig &config) {
    // Create machine
    machine::QtMipsMachine *new_machine = new machine::QtMipsMachine(&config);

    // Remove old machine
    if (machine != nullptr)
        delete machine;
    machine = new_machine;

    // Create machine view
    if (corescene != nullptr)
        delete corescene;
    if (config.pipelined()) {
        corescene = new CoreViewScenePipelined(machine);
    } else {
        corescene = new CoreViewSceneSimple(machine);
    }
    coreview->setScene(corescene);

    set_speed(); // Update machine speed to current settings

    // Connect machine signals and slots
    connect(ui->actionRun, SIGNAL(triggered(bool)), machine, SLOT(play()));
    connect(ui->actionPause, SIGNAL(triggered(bool)), machine, SLOT(pause()));
    connect(ui->actionStep, SIGNAL(triggered(bool)), machine, SLOT(step()));
    connect(ui->actionRestart, SIGNAL(triggered(bool)), machine, SLOT(restart()));
    connect(machine, SIGNAL(status_change(machine::QtMipsMachine::Status)), this, SLOT(machine_status(machine::QtMipsMachine::Status)));
    connect(machine, SIGNAL(program_exit()), this, SLOT(machine_exit()));
    connect(machine, SIGNAL(program_trap(machine::QtMipsException&)), this, SLOT(machine_trap(machine::QtMipsException&)));
    // Connect scene signals to actions
    connect(corescene, SIGNAL(request_registers()), this, SLOT(show_registers()));
    connect(corescene, SIGNAL(request_program_memory()), this, SLOT(show_program()));
    connect(corescene, SIGNAL(request_data_memory()), this, SLOT(show_memory()));
    connect(corescene, SIGNAL(request_jump_to_program_counter(std::uint32_t)), program, SIGNAL(jump_to_pc(std::uint32_t)));
    connect(corescene, SIGNAL(request_cache_program()), this, SLOT(show_cache_program()));
    connect(corescene, SIGNAL(request_cache_data()), this, SLOT(show_cache_data()));
    // Connect signal from break to machine pause
    connect(machine->core(), SIGNAL(stop_on_exception_reached()), machine, SLOT(pause()));


    // Setup docks
    registers->setup(machine);
    program->setup(machine);
    memory->setup(machine);
    cache_program->setup(machine->cache_program());
    cache_data->setup(machine->cache_data());

    // Connect signals for instruction address followup
    connect(machine->core(), SIGNAL(fetch_inst_addr_value(std::uint32_t)),
            program, SLOT(fetch_inst_addr(std::uint32_t)));
    connect(machine->core(), SIGNAL(decode_inst_addr_value(std::uint32_t)),
            program, SLOT(decode_inst_addr(std::uint32_t)));
    connect(machine->core(), SIGNAL(execute_inst_addr_value(std::uint32_t)),
            program, SLOT(execute_inst_addr(std::uint32_t)));
    connect(machine->core(), SIGNAL(memory_inst_addr_value(std::uint32_t)),
            program, SLOT(memory_inst_addr(std::uint32_t)));
    connect(machine->core(), SIGNAL(writeback_inst_addr_value(std::uint32_t)),
            program, SLOT(writeback_inst_addr(std::uint32_t)));

    // Set status to ready
    machine_status(machine::QtMipsMachine::ST_READY);
}

bool MainWindow::configured() {
    return (machine != nullptr);
}

void MainWindow::new_machine() {
    ndialog->show();
}

void MainWindow::machine_reload() {
    machine::MachineConfig cnf(&machine->config()); // We have to make local copy as create_core will delete current machine
    try {
        create_core(cnf);
    } catch (const machine::QtMipsExceptionInput &e) {
        QMessageBox msg(this);
        msg.setText(e.msg(false));
        msg.setIcon(QMessageBox::Critical);
        msg.setDetailedText(e.msg(true));
        msg.setWindowTitle("Error while initializing new machine");
        msg.exec();
    }
}

#define SHOW_HANDLER(NAME)  void MainWindow::show_##NAME() { \
        show_dockwidget(NAME); \
    } \

SHOW_HANDLER(registers)
SHOW_HANDLER(program)
SHOW_HANDLER(memory)
SHOW_HANDLER(cache_program)
SHOW_HANDLER(cache_data)
#undef SHOW_HANDLER

void MainWindow::set_speed() {
    if (machine == nullptr)
        return; // just ignore

    if (ui->ips1->isChecked())
        machine->set_speed(1000);
    else if (ui->ips2->isChecked())
        machine->set_speed(500);
    else if (ui->ips5->isChecked())
        machine->set_speed(200);
    else if (ui->ips10->isChecked())
        machine->set_speed(100);
    else
        machine->set_speed(0);
}

void MainWindow::closeEvent(QCloseEvent *event __attribute__((unused))) {
    settings->setValue("windowGeometry", saveGeometry());
    settings->setValue("windowState", saveState());
    settings->sync();
}

void MainWindow::show_dockwidget(QDockWidget *dw) {
    if (dw->isHidden()) {
        dw->show();
        addDockWidget(Qt::RightDockWidgetArea, dw);
    } else {
        dw->raise();
        dw->setFocus();
    }
}

void MainWindow::machine_status(enum machine::QtMipsMachine::Status st) {
    QString status;
    switch (st) {
    case machine::QtMipsMachine::ST_READY:
        ui->actionPause->setEnabled(false);
        ui->actionRun->setEnabled(true);
        ui->actionStep->setEnabled(true);
        status = "Ready";
        break;
    case machine::QtMipsMachine::ST_RUNNING:
        ui->actionPause->setEnabled(true);
        ui->actionRun->setEnabled(false);
        ui->actionStep->setEnabled(false);
        status = "Running";
        break;
    case machine::QtMipsMachine::ST_BUSY:
        // Busy is not interesting (in such case we should just be running
        return;
    case machine::QtMipsMachine::ST_EXIT:
        // machine_exit is called so we disable controls in that
        status = "Exited";
        break;
    case machine::QtMipsMachine::ST_TRAPPED:
        // machine_trap is called so we disable controls in that
        status = "Trapped";
        break;
    default:
        status = "Unknown";
        break;
    }
    ui->statusBar->showMessage(status);
}

void MainWindow::machine_exit() {
    ui->actionPause->setEnabled(false);
    ui->actionRun->setEnabled(false);
    ui->actionStep->setEnabled(false);
}

void MainWindow::machine_trap(machine::QtMipsException &e) {
    machine_exit();

    QMessageBox msg(this);
    msg.setText(e.msg(false));
    msg.setIcon(QMessageBox::Critical);
    msg.setDetailedText(e.msg(true));
    msg.setWindowTitle("Machine trapped");
    msg.exec();
}