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#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(LogicBlock, ctl_block, 300, 100, {"CPU", "Control"});
ctl_block->setSize(35, 70);
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 ctl_block;
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;
}
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