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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 "memory.h"
#include <cmath>
using namespace coreview;
//////////////////////
#define WIDTH 60
#define HEIGHT 80
#define CACHE_HEIGHT 47
#define PENW 1
//////////////////////
Memory::Memory(bool cache_used, const machine::Cache *cch) : QGraphicsObject(nullptr), name("Memory", this), type(this), cache_t("Cache", this), cache_hit_t("Hit: 0", this), cache_miss_t("Miss: 0", this) {
cache = cache_used;
QFont font;
font.setPointSize(7);
name.setFont(font);
type.setFont(font);
cache_t.setFont(font);
cache_hit_t.setFont(font);
cache_miss_t.setFont(font);
name.setPos(WIDTH/2 - name.boundingRect().width()/2, HEIGHT - (HEIGHT - CACHE_HEIGHT)/2);
if (cache) {
const QRectF &cache_t_b = cache_t.boundingRect();
cache_t.setPos(WIDTH/2 - cache_t_b.width()/2, 1);
const QRectF &cache_hit_b = cache_hit_t.boundingRect();
cache_hit_t.setPos(WIDTH/20, cache_t_b.height() + 2);
cache_miss_t.setPos(WIDTH/20, cache_t_b.height() + cache_hit_b.height() + 3);
}
cache_t.setVisible(cache);
cache_hit_t.setVisible(cache);
cache_miss_t.setVisible(cache);
connect(cch, SIGNAL(hit_update(uint)), this, SLOT(cache_hit_update(uint)));
connect(cch, SIGNAL(miss_update(uint)), this, SLOT(cache_miss_update(uint)));
setPos(x(), y()); // set connector's position
}
QRectF Memory::boundingRect() const {
return QRectF(-PENW / 2, -PENW / 2, WIDTH + PENW, HEIGHT + PENW);
}
void Memory::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
painter->drawRect(0, 0, WIDTH, HEIGHT);
if (cache)
painter->drawLine(0, CACHE_HEIGHT, WIDTH, CACHE_HEIGHT);
}
void Memory::cache_hit_update(unsigned val) {
cache_hit_t.setText("Hit: " + QString::number(val));
}
void Memory::cache_miss_update(unsigned val) {
cache_miss_t.setText("Miss: " + QString::number(val));
}
void Memory::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) {
QGraphicsObject::mouseDoubleClickEvent(event);
if (cache && event->pos().y() < HEIGHT/2)
emit open_cache();
else
emit open_mem();
}
void Memory::set_type(const QString &text) {
type.setText(text);
const QRectF &box = type.boundingRect();
type.setPos(WIDTH/2 - box.width()/2, HEIGHT - (HEIGHT - CACHE_HEIGHT)/2 - box.height());
}
ProgramMemory::ProgramMemory(machine::QtMipsMachine *machine) : Memory(machine->config().cache_program().enabled(), machine->cache_program()) {
set_type("Program");
con_address = new Connector(Connector::AX_X);
con_inst = new Connector(Connector::AX_X);
}
ProgramMemory::~ProgramMemory() {
delete con_address;
delete con_inst;
}
void ProgramMemory::setPos(qreal x, qreal y) {
QGraphicsObject::setPos(x, y);
con_address->setPos(x, y + 20);
con_inst->setPos(x + WIDTH, y + 20);
}
const Connector *ProgramMemory::connector_address() const {
return con_address;
}
const Connector *ProgramMemory::connector_instruction() const {
return con_inst;
}
DataMemory::DataMemory(machine::QtMipsMachine *machine) : Memory(machine->config().cache_data().enabled(), machine->cache_data()) {
set_type("Data");
con_address = new Connector(Connector::AX_X);
con_data_out = new Connector(Connector::AX_X);
con_data_in = new Connector(Connector::AX_X);
con_req_write = new Connector(Connector::AX_Y);
con_req_read = new Connector(Connector::AX_Y);
}
DataMemory::~DataMemory() {
delete con_address;
delete con_data_out;
delete con_data_in;
delete con_req_write;
delete con_req_read;
}
void DataMemory::setPos(qreal x, qreal y) {
QGraphicsObject::setPos(x, y);
con_address->setPos(x, y + 20);
con_data_out->setPos(x + WIDTH, y + 20);
if (cache)
con_data_in->setPos(x, y + 40);
else
con_data_in->setPos(x, y + 60);
con_req_write->setPos(x + 40, y);
con_req_read->setPos(x + 50, y);
}
const Connector *DataMemory::connector_address() const {
return con_address;
}
const Connector *DataMemory::connector_data_out() const {
return con_data_out;
}
const Connector *DataMemory::connector_data_in() const {
return con_data_in;
}
const Connector *DataMemory::connector_req_write() const {
return con_req_write;
}
const Connector *DataMemory::connector_req_read() const {
return con_req_read;
}
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