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
|
#include "coreview.h"
#include <cmath>
//////////////////////////////////////////////////////////////////////////////
/// Size of visible view area
#define SC_WIDTH 720
#define SC_HEIGHT 540
//////////////////////////////////////////////////////////////////////////////
CoreView::CoreView(QWidget *parent) : QGraphicsView(parent) {
setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform);
}
void CoreView::setScene(QGraphicsScene *scene) {
QGraphicsView::setScene(scene);
update_scale();
}
void CoreView::resizeEvent(QResizeEvent *event) {
QGraphicsView::resizeEvent(event);
update_scale();
}
void CoreView::update_scale() {
if (scene() == nullptr)
return; // Skip if we have no scene
// Note: there is somehow three pixels error when viewing so we have to always compensate
const int w = scene()->width() + 3;
const int h = scene()->height() + 3;
qreal scale = 1;
if (height() > h && width() > w) {
if (height() > width()) {
scale = (qreal)width() / w;
} else {
scale = (qreal)height() / h;
}
}
QTransform t;
t.scale(scale, scale);
setTransform(t, false);
}
#define NEW_B(TYPE, VAR, ...) do { \
VAR = new coreview::TYPE(__VA_ARGS__);\
addItem(VAR);\
} while(false)
#define NEW(TYPE, VAR, X, Y, ...) do { \
NEW_B(TYPE, VAR, __VA_ARGS__); \
VAR->setPos(X, Y); \
} while(false)
#define NEW_I(VAR, X, Y, SIG) do { \
NEW(InstructionView, VAR, X, Y); \
connect(machine->core(), SIGNAL(SIG), VAR, SLOT(instruction_update(const machine::Instruction&))); \
} while(false)
CoreViewScene::CoreViewScene(CoreView *view, machine::QtMipsMachine *machine) : QGraphicsScene(view) {
setSceneRect(0, 0, SC_WIDTH, SC_HEIGHT);
// Identification cross (TODO remove)
QPen pen;
pen.setBrush(QBrush(QColor(220, 220, 220)));
addLine(width()/2, 0, width()/2, height(), pen);
addLine(0, height()/2, width(), height()/2, pen);
addRect(0.5, 0.5, width() - 0.5, height() - 0.5, pen);
// TODO remove
// Elements //
NEW(ProgramCounter, pc.pc, 2, 330, machine);
NEW(Latch, pc.latch, 50, 370, machine, 20);
NEW(Adder, pc.adder, 100, 350);
struct coreview::Latch::ConnectorPair pc_latch_pair = pc.latch->new_connector(10);
NEW_B(Constant, pc.adder_4, pc.adder->connector_in_b(), "4");
NEW(Junction, pc.junction, 80, pc_latch_pair.out->y());
NEW(Multiplexer, pc.multiplex, 60, 100, 4);
NEW(Alu, alu, 470, 230);
NEW(Memory, mem, 20, 510, machine);
NEW(Registers, regs, 20, 0);
NEW(Multiplexer, mem_or_reg, 570, 180, 2);
NEW_I(instr_fetch, 100, 50, instruction_fetched(const machine::Instruction&));
// Connections //
coreview::Connection *con;
new_connection(pc.pc->connector_out(), pc_latch_pair.in);
new_connection(pc_latch_pair.out, pc.junction->new_connector(0));
new_connection(pc.junction->new_connector(M_PI_2), pc.adder->connector_in_a());
con = new_connection(pc.junction->new_connector(-M_PI_2), mem->connector_pc());
con->setAxes({CON_AXIS_X(430)});
con = new_connection(pc.multiplex->connector_out(), pc.pc->connector_in());
con->setAxes({CON_AXIS_Y(90), CON_AXIS_X(80)});
con = new_connection(pc.adder->connector_out(), pc.multiplex->connector_in(3));
con->setAxes({CON_AXIS_Y(130), CON_AXIS_X(280), CON_AXIS_Y(55)});
connect(regs, SIGNAL(open_registers()), this, SIGNAL(request_registers()));
connect(mem, SIGNAL(open_data_mem()), this, SIGNAL(request_data_memory()));
connect(mem, SIGNAL(open_program_mem()), this, SIGNAL(request_program_memory()));
}
CoreViewScene::~CoreViewScene() {
for (int i = 0; i < connections.size(); i++)
delete connections[i];
delete pc.pc;
delete pc.latch;
delete pc.adder;
delete pc.adder_4;
delete pc.junction;
delete pc.multiplex;
delete alu;
delete mem;
delete regs;
delete mem_or_reg;
delete instr_fetch;
}
coreview::Connection *CoreViewScene::new_connection(const coreview::Connector *a, const coreview::Connector *b) {
coreview::Connection *c = new coreview::Connection(a, b);
connections.append(c);
addItem(c);
return c;
}
CoreViewSceneSimple::CoreViewSceneSimple(CoreView *view, machine::QtMipsMachine *machine) : CoreViewScene(view, machine) {
NEW(Latch, delay_slot_latch, 160, 50, machine, 150);
}
CoreViewSceneSimple::~CoreViewSceneSimple() {
delete delay_slot_latch;
}
CoreViewScenePipelined::CoreViewScenePipelined(CoreView *view, machine::QtMipsMachine *machine) : CoreViewScene(view, machine) {
NEW(Latch, latch_if_id, 158, 90, machine, 350);
latch_if_id->setTitle("IF/ID");
NEW(Latch, latch_id_ex, 392, 90, machine, 350);
latch_id_ex->setTitle("ID/EX");
NEW(Latch, latch_ex_mem, 536, 90, machine, 350);
latch_ex_mem->setTitle("EX/MEM");
NEW(Latch, latch_mem_wb, 680, 90, machine, 350);
latch_mem_wb->setTitle("MEM/WB");
NEW_I(inst_dec, 250, 50, instruction_decoded(const machine::Instruction&));
NEW_I(inst_exec, 400, 50, instruction_executed(const machine::Instruction&));
NEW_I(inst_mem, 540, 50, instruction_memory(const machine::Instruction&));
NEW_I(inst_wrb, 670, 50, instruction_writeback(const machine::Instruction&));
}
CoreViewScenePipelined::~CoreViewScenePipelined() {
delete latch_if_id;
delete latch_id_ex;
delete latch_ex_mem;
delete latch_mem_wb;
delete inst_dec;
delete inst_exec;
delete inst_mem;
delete inst_wrb;
}
|
