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cpupane.cpp
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// File: cpupane.cpp
/*
Pep8-1 is a virtual machine for writing machine language and assembly
language programs.
Copyright (C) 2009 J. Stanley Warford, Pepperdine University
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <QMessageBox>
#include <QKeyEvent>
#include <QSound>
#include "cpupane.h"
#include "ui_cpupane.h"
#include "sim.h"
#include "pep.h"
#include <QtGlobal>
CpuPane::CpuPane(QWidget *parent) :
QWidget(parent),
ui(new Ui::CpuPane)
{
ui->setupUi(this);
connect(ui->singleStepPushButton, SIGNAL(clicked()), this, SLOT(singleStepButton()));
connect(ui->resumePushButton, SIGNAL(clicked()), this, SIGNAL(resumeButtonClicked()));
interruptExecutionFlag = false;
clearCpu();
if (Pep::getSystem() != "Mac") {
ui->cpuLabel->setFont(QFont(Pep::labelFont, Pep::labelFontSize));
ui->traceTrapsCheckBox->setFont(QFont(Pep::labelFont));
ui->accLabel->setFont(QFont(Pep::labelFont));
ui->xLabel->setFont(QFont(Pep::labelFont));
ui->spLabel->setFont(QFont(Pep::labelFont));
ui->pcLabel->setFont(QFont(Pep::labelFont));
ui->instrSpecLabel->setFont(QFont(Pep::labelFont));
ui->oprndSpecLabel->setFont(QFont(Pep::labelFont));
ui->oprndLabel->setFont(QFont(Pep::labelFont));
ui->singleStepPushButton->setFont(QFont(Pep::labelFont));
ui->resumePushButton->setFont(QFont(Pep::labelFont));
ui->pepNLabel->setFont(QFont(Pep::labelFont));
ui->pepZLabel->setFont(QFont(Pep::labelFont));
ui->pepVLabel->setFont(QFont(Pep::labelFont));
ui->pepCLabel->setFont(QFont(Pep::labelFont));
ui->nLabel->setFont(QFont(Pep::labelFont));
ui->zLabel->setFont(QFont(Pep::labelFont));
ui->vLabel->setFont(QFont(Pep::labelFont));
ui->cLabel->setFont(QFont(Pep::labelFont));
ui->accHexLabel->setFont(QFont(Pep::labelFont));
ui->accDecLabel->setFont(QFont(Pep::labelFont));
ui->accCh1Label->setFont(QFont(Pep::labelFont));
ui->accCh2Label->setFont(QFont(Pep::labelFont));
ui->xHexLabel->setFont(QFont(Pep::labelFont));
ui->xDecLabel->setFont(QFont(Pep::labelFont));
ui->xCh1Label->setFont(QFont(Pep::labelFont));
ui->xCh2Label->setFont(QFont(Pep::labelFont));
ui->spHexLabel->setFont(QFont(Pep::labelFont));
ui->spDecLabel->setFont(QFont(Pep::labelFont));
ui->pcHexLabel->setFont(QFont(Pep::labelFont));
ui->pcDecLabel->setFont(QFont(Pep::labelFont));
ui->instrSpecBinLabel->setFont(QFont(Pep::labelFont));
ui->instrSpecMnemonLabel->setFont(QFont(Pep::labelFont));
ui->oprndSpecHexLabel->setFont(QFont(Pep::labelFont));
ui->oprndSpecDecLabel->setFont(QFont(Pep::labelFont));
ui->oprndHexLabel->setFont(QFont(Pep::labelFont));
ui->oprndDecLabel->setFont(QFont(Pep::labelFont));
ui->oprndCh1Label->setFont(QFont(Pep::labelFont));
ui->oprndCh2Label->setFont(QFont(Pep::labelFont));
}
isCurrentlySimulating = false;
}
CpuPane::~CpuPane()
{
delete ui;
}
static const char *asciiNames[] = {"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL", "BS", "HT", "LF", "VT", "FF", "CR",
"SO", "SI", "DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB", "CAN", "EM", "SUB", "ESC", "FS", "GS", "RS", "US", "SP"};
static QString chLabel(int value) {
if (value <= ' ')
return QString(asciiNames[value]);
if (value == 127)
return QString("DEL");
QChar ch = QChar(value);
if (ch.isPrint())
return QString(ch);
else
return QString("???");
}
void CpuPane::updateCpu() {
Enu::EAddrMode addrMode = Pep::decodeAddrMode[Sim::instructionSpecifier];
ui->nLabel->setText(Sim::nBit ? "1" : "0");
ui->zLabel->setText(Sim::zBit ? "1" : "0");
ui->vLabel->setText(Sim::vBit ? "1" : "0");
ui->cLabel->setText(Sim::cBit ? "1" : "0");
ui->accHexLabel->setText(QString("0x") + QString("%1").arg(Sim::accumulator, 4, 16, QLatin1Char('0')).toUpper());
ui->accDecLabel->setText(QString("%1").arg(Sim::toSignedDecimal(Sim::accumulator)));
ui->accCh1Label->setText(chLabel(Sim::accumulator/256));
ui->accCh2Label->setText(chLabel(Sim::accumulator%256));
ui->xHexLabel->setText(QString("0x") + QString("%1").arg(Sim::indexRegister, 4, 16, QLatin1Char('0')).toUpper());
ui->xDecLabel->setText(QString("%1").arg(Sim::toSignedDecimal(Sim::indexRegister)));
ui->xCh1Label->setText(chLabel(Sim::indexRegister/256));
ui->xCh2Label->setText(chLabel(Sim::indexRegister%256));
ui->spHexLabel->setText(QString("0x") + QString("%1").arg(Sim::stackPointer, 4, 16, QLatin1Char('0')).toUpper());
ui->spDecLabel->setText(QString("%1").arg(Sim::stackPointer));
ui->pcHexLabel->setText(QString("0x") + QString("%1").arg(Sim::programCounter, 4, 16, QLatin1Char('0')).toUpper());
ui->pcDecLabel->setText(QString("%1").arg(Sim::programCounter));
ui->instrSpecBinLabel->setText(QString("%1").arg(Sim::instructionSpecifier, 8, 2, QLatin1Char('0')).toUpper());
ui->instrSpecMnemonLabel->setText(" " + Pep::enumToMnemonMap.value(Pep::decodeMnemonic[Sim::instructionSpecifier])
+ Pep::commaSpaceToAddrMode(addrMode));
if (Pep::decodeAddrMode.value(Sim::instructionSpecifier) == Enu::NONE) {
ui->oprndSpecHexLabel->setText("");
ui->oprndSpecDecLabel->setText("");
ui->oprndHexLabel->setText("");
ui->oprndDecLabel->setText("");
ui->oprndCh1Label->setText("");
ui->oprndCh2Label->setText("");
}
else {
ui->oprndSpecHexLabel->setText(QString("0x") + QString("%1").arg(Sim::operandSpecifier, 4, 16, QLatin1Char('0')).toUpper());
ui->oprndSpecDecLabel->setText(QString("%1").arg(Sim::toSignedDecimal(Sim::operandSpecifier)));
ui->oprndHexLabel->setText(QString("0x") + QString("%1").arg(Sim::operand, Sim::operandDisplayFieldWidth, 16, QLatin1Char('0')).toUpper());
ui->oprndDecLabel->setText(QString("%1").arg(Sim::toSignedDecimal(Sim::operand)));
ui->oprndCh1Label->setText(chLabel(Sim::operand/256));
ui->oprndCh2Label->setText(chLabel(Sim::operand%256));
}
}
void CpuPane::clearCpu()
{
ui->nLabel->setText("");
ui->zLabel->setText("");
ui->vLabel->setText("");
ui->cLabel->setText("");
ui->accHexLabel->setText("");
ui->accDecLabel->setText("");
ui->accCh1Label->setText("");
ui->accCh2Label->setText("");
ui->xHexLabel->setText("");
ui->xDecLabel->setText("");
ui->xCh1Label->setText("");
ui->xCh2Label->setText("");
ui->spHexLabel->setText("");
ui->spDecLabel->setText("");
ui->pcHexLabel->setText("");
ui->pcDecLabel->setText("");
ui->instrSpecBinLabel->setText("");
ui->instrSpecMnemonLabel->setText("");
ui->oprndSpecHexLabel->setText("");
ui->oprndSpecDecLabel->setText("");
ui->oprndHexLabel->setText("");
ui->oprndDecLabel->setText("");
ui->oprndCh1Label->setText("");
ui->oprndCh2Label->setText("");
Sim::nBit = false;
Sim::zBit = false;
Sim::vBit = false;
Sim::cBit = false;
Sim::accumulator = 0;
Sim::indexRegister = 0;
Sim::stackPointer = 0; // Sim::readWord(Pep::dotBurnArgument - 7);
Sim::programCounter = 0;
}
void CpuPane::runClicked() {
ui->traceTrapsCheckBox->setChecked(false);
}
void CpuPane::setDebugState(bool b)
{
ui->traceTrapsCheckBox->setDisabled(b);
Sim::tracingTraps = ui->traceTrapsCheckBox->isChecked();
}
void CpuPane::traceTraps(bool b)
{
ui->traceTrapsCheckBox->setChecked(b);
}
void CpuPane::setButtonsEnabled(bool b) {
ui->resumePushButton->setDisabled(!b);
ui->singleStepPushButton->setDisabled(!b);
if (b) {
ui->singleStepPushButton->setFocus();
}
}
void CpuPane::runWithBatch()
{
isCurrentlySimulating = true;
interruptExecutionFlag = false;
QString errorString;
while (true) {
qApp->processEvents(); // To make sure that the event filter gets to handle keypresses during the run
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
updateCpu();
emit executionComplete();
isCurrentlySimulating = false;
return;
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] == Enu::STOP) {
updateCpu();
emit executionComplete();
isCurrentlySimulating = false;
return;
}
if (interruptExecutionFlag) {
updateCpu();
isCurrentlySimulating = false;
return;
}
}
}
void CpuPane::runWithTerminal()
{
isCurrentlySimulating = true;
waiting = Enu::ERunWaiting;
interruptExecutionFlag = false;
QString errorString;
while (true) {
qApp->processEvents(); // To make sure that the event filter gets to handle keypresses during the run
if ((Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)] == Enu::CHARI) && Sim::inputBuffer.isEmpty()) {
// we are waiting for input
updateCpu();
emit waitingForInput();
isCurrentlySimulating = false;
return;
}
else {
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
updateCpu();
emit executionComplete();
isCurrentlySimulating = false;
return;
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] == Enu::STOP) {
updateCpu();
emit executionComplete();
isCurrentlySimulating = false;
return;
}
if (interruptExecutionFlag) {
updateCpu();
emit updateSimulationView();
isCurrentlySimulating = false;
return;
}
}
}
}
void CpuPane::resumeWithBatch()
{
isCurrentlySimulating = true;
interruptExecutionFlag = false;
QString errorString;
while (true) {
qApp->processEvents(); // To make sure that the event filter gets to handle keypresses during the run
if (ui->traceTrapsCheckBox->isChecked()) {
trapLookahead();
}
else if (Pep::isTrapMap[Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)]]) {
Sim::trapped = true;
}
else if (Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)] == Enu::RETTR) {
Sim::trapped = false;
}
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] == Enu::STOP) {
emit updateSimulationView();
emit executionComplete();
isCurrentlySimulating = false;
return;
}
if (Pep::memAddrssToAssemblerListing->contains(Sim::programCounter) &&
Pep::listingRowChecked->value(Pep::memAddrssToAssemblerListing->value(Sim::programCounter)) == Qt::Checked) {
updateCpu();
emit updateSimulationView();
return;
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
updateCpu();
emit updateSimulationView();
isCurrentlySimulating = false;
emit executionComplete();
}
if (interruptExecutionFlag) {
emit updateSimulationView();
isCurrentlySimulating = false;
return;
}
}
}
void CpuPane::resumeWithTerminal()
{
isCurrentlySimulating = true;
waiting = Enu::EDebugResumeWaiting;
interruptExecutionFlag = false;
QString errorString;
while (true) {
qApp->processEvents(); // To make sure that the event filter gets to handle keypresses during the run
trapLookahead();
if (Sim::trapped && !ui->traceTrapsCheckBox->isChecked()) {
updateCpu();
do {
trapLookahead();
qApp->processEvents(); // To make sure that the event filter gets to handle keypresses during the run
if ((Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)] == Enu::CHARI) && Sim::inputBuffer.isEmpty()) {
// we are waiting for input
ui->singleStepPushButton->setDisabled(true);
ui->resumePushButton->setDisabled(true);
emit waitingForInput();
isCurrentlySimulating = false;
return;
}
else {
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] == Enu::STOP) {
emit updateSimulationView();
emit executionComplete();
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
emit updateSimulationView();
emit executionComplete();
isCurrentlySimulating = false;
}
}
if (interruptExecutionFlag) {
updateCpu();
emit updateSimulationView();
isCurrentlySimulating = false;
return;
}
} while (Sim::trapped);
}
else if ((Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)] == Enu::CHARI) && Sim::inputBuffer.isEmpty()) {
// we are waiting for input
ui->singleStepPushButton->setDisabled(true);
ui->resumePushButton->setDisabled(true);
emit updateSimulationView();
updateCpu();
emit waitingForInput();
isCurrentlySimulating = false;
return;
}
else {
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] == Enu::STOP) {
emit updateSimulationView(); // Finish updating the memory before we're done executing
emit executionComplete();
isCurrentlySimulating = false;
return;
}
if (Pep::memAddrssToAssemblerListing->contains(Sim::programCounter) &&
Pep::listingRowChecked->value(Pep::memAddrssToAssemblerListing->value(Sim::programCounter)) == Qt::Checked) {
updateCpu();
emit updateSimulationView();
isCurrentlySimulating = false;
return;
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
updateCpu();
emit updateSimulationView();
emit executionComplete();
isCurrentlySimulating = false;
#warning "should we return here?"
}
}
if (interruptExecutionFlag) {
isCurrentlySimulating = false;
return;
}
}
}
void CpuPane::singleStepWithBatch()
{
isCurrentlySimulating = true;
interruptExecutionFlag = false;
QString errorString;
trapLookahead();
if (Sim::trapped && !ui->traceTrapsCheckBox->isChecked()) {
QString errorString;
do {
trapLookahead();
qApp->processEvents();
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] == Enu::STOP) {
emit updateSimulationView();
emit executionComplete();
isCurrentlySimulating = false;
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
emit updateSimulationView();
emit executionComplete();
isCurrentlySimulating = false;
}
if (interruptExecutionFlag) {
updateCpu();
emit updateSimulationView();
isCurrentlySimulating = false;
return;
}
} while (Sim::trapped);
emit updateSimulationView();
updateCpu();
}
else if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
emit updateSimulationView();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] != Enu::STOP) {
updateCpu();
}
else {
isCurrentlySimulating = false;
emit executionComplete();
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
emit executionComplete();
}
isCurrentlySimulating = false;
}
void CpuPane::singleStepWithTerminal()
{
isCurrentlySimulating = true;
interruptExecutionFlag = false;
QString errorString;
waiting = Enu::EDebugSSWaiting;
trapLookahead();
if (Sim::trapped && !ui->traceTrapsCheckBox->isChecked()) {
updateCpu();
do {
trapLookahead();
qApp->processEvents();
if ((Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)] == Enu::CHARI) && Sim::inputBuffer.isEmpty()) {
// we are waiting for input
ui->singleStepPushButton->setDisabled(true);
ui->resumePushButton->setDisabled(true);
emit waitingForInput();
isCurrentlySimulating = false;
return;
}
else {
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] == Enu::STOP) {
emit updateSimulationView();
emit executionComplete();
isCurrentlySimulating = false;
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
emit updateSimulationView();
emit executionComplete();
isCurrentlySimulating = false;
}
}
if (interruptExecutionFlag) {
updateCpu();
emit updateSimulationView();
isCurrentlySimulating = false;
return;
}
} while (Sim::trapped);
emit updateSimulationView();
}
else if ((Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)] == Enu::CHARI) && Sim::inputBuffer.isEmpty()) {
ui->singleStepPushButton->setDisabled(true);
ui->resumePushButton->setDisabled(true);
emit waitingForInput();
isCurrentlySimulating = false;
}
else {
if (Sim::vonNeumannStep(errorString)) {
emit vonNeumannStepped();
emit updateSimulationView();
if (Sim::outputBuffer.length() == 1) {
emit appendOutput(Sim::outputBuffer);
Sim::outputBuffer = "";
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] != Enu::STOP) {
updateCpu();
}
else {
emit executionComplete();
}
}
else {
QMessageBox::warning(0, "Pep/8", errorString);
emit executionComplete();
return;
}
if (Pep::decodeMnemonic[Sim::instructionSpecifier] != Enu::STOP) {
updateCpu();
}
else {
emit executionComplete();
}
}
isCurrentlySimulating = false;
}
void CpuPane::trapLookahead()
{
if (Pep::isTrapMap[Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)]]) {
Sim::trapped = true;
Pep::memAddrssToAssemblerListing = &Pep::memAddrssToAssemblerListingOS;
Pep::listingRowChecked = &Pep::listingRowCheckedOS;
}
else if (Pep::decodeMnemonic[Sim::readByte(Sim::programCounter)] == Enu::RETTR) {
Sim::trapped = false;
Pep::memAddrssToAssemblerListing = &Pep::memAddrssToAssemblerListingProg;
Pep::listingRowChecked = &Pep::listingRowCheckedProg;
}
}
void CpuPane::interruptExecution()
{
interruptExecutionFlag = true;
}
void CpuPane::highlightOnFocus()
{
if (ui->singleStepPushButton->hasFocus()) {
ui->cpuLabel->setAutoFillBackground(true);
}
else {
ui->cpuLabel->setAutoFillBackground(false);
}
}
Enu::EWaiting CpuPane::waitingState()
{
return waiting;
}
bool CpuPane::singleStepHasFocus()
{
return ui->singleStepPushButton->isEnabled() && ui->singleStepPushButton->hasFocus();
}
bool CpuPane::hasFocus()
{
return ui->singleStepPushButton->hasFocus();
}
bool CpuPane::isSimulating()
{
return isCurrentlySimulating;
}
void CpuPane::giveSingleStepFocus()
{
// protect against this being used incorrectly:
if (ui->singleStepPushButton->isEnabled()) {
ui->singleStepPushButton->setFocus();
}
}
void CpuPane::mousePressEvent(QMouseEvent *)
{
if (ui->singleStepPushButton->isEnabled()) {
ui->singleStepPushButton->setFocus();
}
}
void CpuPane::singleStepButton()
{
ui->singleStepPushButton->setFocus();
emit singleStepButtonClicked();
}