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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 "registersdock.h"
static const QString labels[] = {
"zero",
"at",
"v0",
"v1",
"a0",
"a1",
"a2",
"a3",
"t0",
"t1",
"t2",
"t3",
"t4",
"t5",
"t6",
"t7",
"s0",
"s1",
"s2",
"s3",
"s4",
"s5",
"s6",
"s7",
"t8",
"t9",
"k0",
"k1",
"gp",
"sp",
"fp",
"ra"
};
RegistersDock::RegistersDock(QWidget *parent) : QDockWidget(parent) {
scrollarea = new QScrollArea(this);
scrollarea->setWidgetResizable(true);
widg = new StaticTable(scrollarea);
#define INIT(X, LABEL) do{ \
X = new QLabel("0x00000000", widg); \
X->setFixedSize(X->sizeHint()); \
X->setText(""); \
X->setTextInteractionFlags(Qt::TextSelectableByMouse); \
widg->addRow({new QLabel(LABEL, widg), X}); \
} while(false)
for (int i = 0; i < 32; i++)
INIT(gp[i], QString("$") + QString::number(i) + QString("/") + labels[i]);
INIT(pc, "pc");
INIT(lo, "lo");
INIT(hi, "hi");
#undef INIT
scrollarea->setWidget(widg);
setWidget(scrollarea);
setObjectName("Registers");
setWindowTitle("Registers");
}
RegistersDock::~RegistersDock() {
delete pc;
delete hi;
delete lo;
for (int i = 0; i < 32; i++)
delete gp[i];
delete widg;
delete scrollarea;
}
void RegistersDock::setup(machine::QtMipsMachine *machine) {
if (machine == nullptr) {
// Reset data
pc->setText("");
hi->setText("");
lo->setText("");
for (int i = 0; i < 32; i++)
gp[i]->setText("");
return;
}
const machine::Registers *regs = machine->registers();
connect(regs, SIGNAL(pc_update(std::uint32_t)), this, SLOT(pc_changed(std::uint32_t)));
connect(regs, SIGNAL(gp_update(std::uint8_t,std::uint32_t)), this, SLOT(gp_changed(std::uint8_t,std::uint32_t)));
connect(regs, SIGNAL(hi_lo_update(bool,std::uint32_t)), this, SLOT(hi_lo_changed(bool,std::uint32_t)));
// Load values
labelVal(pc, regs->read_pc());
labelVal(hi, regs->read_hi_lo(true));
labelVal(lo, regs->read_hi_lo(false));
for (int i = 0; i < 32; i++)
labelVal(gp[i], regs->read_gp(i));
}
void RegistersDock::pc_changed(std::uint32_t val) {
labelVal(pc, val);
}
void RegistersDock::gp_changed(std::uint8_t i, std::uint32_t val) {
SANITY_ASSERT(i < 32, QString("RegistersDock received signal with invalid gp register: ") + QString::number(i));
labelVal(gp[i], val);
}
void RegistersDock::hi_lo_changed(bool hi, std::uint32_t val) {
if (hi)
labelVal(this->hi, val);
else
labelVal(lo, val);
}
void RegistersDock::labelVal(QLabel *label, std::uint32_t value) {
QString t = QString("0x") + QString::number(value, 16);
label->setText(t);
}
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