From 1afbebb7748f44f05ae76539a4d2f382a371ff00 Mon Sep 17 00:00:00 2001
From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Mon, 1 Apr 2019 15:25:52 +0200
Subject: Coreview multiplexers updated and added for branch compare forward.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
---
 qtmips_gui/coreview/minimux.cpp | 120 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 qtmips_gui/coreview/minimux.cpp

(limited to 'qtmips_gui/coreview/minimux.cpp')

diff --git a/qtmips_gui/coreview/minimux.cpp b/qtmips_gui/coreview/minimux.cpp
new file mode 100644
index 0000000..debd820
--- /dev/null
+++ b/qtmips_gui/coreview/minimux.cpp
@@ -0,0 +1,120 @@
+// 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 "minimux.h"
+#include <cmath>
+
+using namespace coreview;
+
+//////////////////////
+#define WIDTH 6
+#define HEIGHT 8
+#define GAP 8
+#define PENW 1
+//////////////////////
+
+MiniMux::MiniMux(unsigned size, bool ctl_up): QGraphicsObject(nullptr) {
+    this->size = size;
+    seton = -1;
+    ctlfrom = ctl_up;
+    con_ctl = new Connector(Connector::AX_X);
+    con_out = new Connector(Connector::AX_Y);
+    con_in = new Connector*[size];
+    for (unsigned i = 0; i < size; i++)
+        con_in[i] = new Connector(Connector::AX_Y);
+    setPos(x(), y()); // Set connectors possitions
+}
+
+MiniMux::~MiniMux() {
+    delete con_ctl;
+    delete con_out;
+    for (unsigned i = 0; i < size; i++)
+        delete con_in[i];
+    delete[] con_in;
+}
+
+#define C_WIDTH (WIDTH + (GAP * (size -1 )))
+
+QRectF MiniMux::boundingRect() const {
+    return QRectF(-PENW / 2, -PENW / 2, C_WIDTH + PENW, WIDTH + PENW);
+}
+
+void MiniMux::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
+    painter->setPen(QPen(QColor(200, 200, 200), 2));
+    if (seton >= 0 && seton < (int)size)
+        painter->drawLine((WIDTH / 2) + (seton * GAP), HEIGHT, C_WIDTH / 2, 0);
+
+    painter->setPen(QColor(0, 0, 0));
+    const QPointF poly[] = {
+        QPointF(0, HEIGHT),
+        QPointF(HEIGHT / 2, 0),
+        QPointF(C_WIDTH - (HEIGHT / 2), 0),
+        QPointF(C_WIDTH, HEIGHT)
+    };
+    painter->drawPolygon(poly, sizeof(poly) / sizeof(QPointF));
+}
+
+void MiniMux::setPos(qreal x, qreal y) {
+    QGraphicsItem::setPos(x, y);
+    /*if (ctlfrom)
+        con_ctl->setPos(x + (WIDTH / 2), y + (WIDTH / 4));
+    else
+        con_ctl->setPos(x + (WIDTH / 2), y + C_HEIGHT - (WIDTH / 4));
+    */
+    con_out->setPos(x + (C_WIDTH / 2), y);
+    for (unsigned i = 0; i < size; i++)
+        con_in[i]->setPos(x + (WIDTH / 2) + (i * GAP), y + HEIGHT);
+}
+
+const Connector *MiniMux::connector_ctl() const {
+    return con_ctl;
+}
+
+const Connector *MiniMux::connector_out() const {
+    return con_out;
+}
+
+const Connector *MiniMux::connector_in(unsigned i) const {
+    SANITY_ASSERT(i < size, "MiniMux: requested out of range input connector");
+    return con_in[i];
+}
+
+void MiniMux::set(std::uint32_t i) {
+    if (seton != (int)i) {
+        seton = (int)i;
+        update();
+    }
+}
+
-- 
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