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// 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 "programcounter.h"
#include "coreview_colors.h"
#include "fontsize.h"
#include <cmath>
using namespace coreview;
//////////////////////
#define WIDTH 72
#define HEIGHT 25
#define PENW 1
//////////////////////
ProgramCounter::ProgramCounter(machine::QtMipsMachine *machine) : QGraphicsObject(nullptr), name("PC", this), value(this) {
registers = machine->registers();
QFont font;
font.setPixelSize(FontSize::SIZE7);
name.setPos(WIDTH/2 - name.boundingRect().width()/2, 0);
name.setFont(font);
font.setPointSize(FontSize::SIZE8);
value.setText(QString("0x") + QString::number(machine->registers()->read_pc(), 16));
value.setPos(1, HEIGHT - value.boundingRect().height());
value.setFont(font);
connect(machine->registers(), SIGNAL(pc_update(std::uint32_t)), this, SLOT(pc_update(std::uint32_t)));
con_in = new Connector(Connector::AX_Y);
con_out = new Connector(Connector::AX_Y);
setPos(x(), y()); // To set initial connectors positions
}
ProgramCounter::~ProgramCounter() {
delete con_in;
delete con_out;
}
QRectF ProgramCounter::boundingRect() const {
return QRectF(-PENW / 2, -PENW / 2, WIDTH + PENW, HEIGHT + PENW);
}
void ProgramCounter::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
QPen pen = painter->pen();
pen.setColor(BLOCK_OUTLINE_COLOR);
painter->setPen(pen);
painter->drawRect(0, 0, WIDTH, HEIGHT);
}
void ProgramCounter::setPos(qreal x, qreal y) {
QGraphicsObject::setPos(x, y);
con_in->setPos(x + WIDTH/2, y + HEIGHT);
con_out->setPos(x + WIDTH/2, y);
}
const Connector *ProgramCounter::connector_in() const {
return con_in;
}
const Connector *ProgramCounter::connector_out() const {
return con_out;
}
void ProgramCounter::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event __attribute__((unused))) {
emit open_program();
emit jump_to_pc(registers->read_pc());
}
void ProgramCounter::pc_update(std::uint32_t val) {
value.setText(QString("0x") + QString::number(val, 16));
}
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