psionrevo/WindEmu
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broken draft of a fully custom ARM emulator core

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This commit is contained in:
Ash Wolf
2019-12-22 05:02:55 +00:00
parent 868112e9fc
commit c93b268061
8 changed files with 1559 additions and 569 deletions
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3
WindQt/WindQt.pro
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@@ -20,7 +20,8 @@ DEFINES += QT_DEPRECATED_WARNINGS
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
CONFIG += c++11
CONFIG += c++17
QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.14
SOURCES += \
main.cpp \

156
WindQt/mainwindow.cpp
View File

@@ -12,13 +12,13 @@ MainWindow::MainWindow(QWidget *parent) :
ui->setupUi(this);
emu = new Emu;
emu->loadROM("/Users/ash/src/psion/Sys$rom.bin");
emu->loadROM("/Users/ash/src/psion/Sys$rom.bin");
timer = new QTimer(this);
timer->setInterval(1000/64);
connect(timer, SIGNAL(timeout()), SLOT(execTimer()));
updateScreen();
updateScreen();
}
MainWindow::~MainWindow()
@@ -30,10 +30,10 @@ void MainWindow::updateScreen()
{
ui->cycleCounter->setText(QString("Cycles: %1").arg(emu->currentCycles()));
updateMemory();
updateMemory();
ui->regsLabel->setText(
QString("R0: %1 / R1: %2 / R2: %3 / R3: %4 / R4: %5 / R5: %6 / R6: %7 / R7: %8\nR8: %9 / R9: %10 / R10:%11 / R11:%12 / R12:%13 / SP: %14 / LR: %15 / PC: %16")
QString("R0: %1 / R1: %2 / R2: %3 / R3: %4 / R4: %5 / R5: %6 / R6: %7 / R7: %8\nR8: %9 / R9: %10 / R10:%11 / R11:%12 / R12:%13 / SP: %14 / LR: %15 / PC: %16")
.arg(emu->getGPR(0), 8, 16)
.arg(emu->getGPR(1), 8, 16)
.arg(emu->getGPR(2), 8, 16)
@@ -56,24 +56,27 @@ void MainWindow::updateScreen()
const int context = 8 * 4;
uint32_t pc = emu->getGPR(15) - 4;
uint32_t minCode = pc - context;
if (minCode >= (UINT32_MAX - context))
if (minCode >= (UINT32_MAX - context))
minCode = 0;
uint32_t maxCode = pc + context;
if (maxCode < context)
if (maxCode < context)
maxCode = UINT32_MAX;
QStringList codeLines;
for (uint32_t addr = minCode; addr >= minCode && addr <= maxCode; addr += 4) {
const char *prefix = (addr == pc) ? "==>" : " ";
QStringList codeLines;
for (uint32_t addr = minCode; addr >= minCode && addr <= maxCode; addr += 4) {
const char *prefix = (addr == pc) ? "==>" : " ";
struct ARMInstructionInfo info;
char buffer[512];
uint32_t opcode = emu->readVirt32(addr);
ARMDecodeARM(opcode, &info);
ARMDisassemble(&info, addr, buffer, sizeof(buffer));
codeLines.append(QString("%1 %2 | %3 | %4").arg(prefix).arg(addr, 8, 16).arg(opcode, 8, 16).arg(buffer));
auto result = emu->readVirtual(addr, ARM710a::V32);
if (result.first.has_value()) {
uint32_t opcode = result.first.value();
ARMDecodeARM(opcode, &info);
ARMDisassemble(&info, addr, buffer, sizeof(buffer));
codeLines.append(QString("%1 %2 | %3 | %4").arg(prefix).arg(addr, 8, 16).arg(opcode, 8, 16).arg(buffer));
}
}
ui->codeLabel->setText(codeLines.join('\n'));
ui->codeLabel->setText(codeLines.join('\n'));
// now, the actual screen
const uint8_t *lcdBuf = emu->getLCDBuffer();
@@ -95,12 +98,12 @@ void MainWindow::updateScreen()
for (int x = 0; x < img.width(); x++) {
uint8_t byte = lcdBuf[lineOffs + (x / ppb)];
int shift = (x & (ppb - 1)) * bpp;
int mask = (1 << bpp) - 1;
int mask = (1 << bpp) - 1;
int palIdx = (byte >> shift) & mask;
int palValue = palette[palIdx];
palValue |= (palValue << 4);
scanline[x] = palValue ^ 0xFF;
palValue |= (palValue << 4);
scanline[x] = palValue ^ 0xFF;
}
}
@@ -198,7 +201,7 @@ void MainWindow::keyPressEvent(QKeyEvent *event)
void MainWindow::keyReleaseEvent(QKeyEvent *event)
{
int k = resolveKey(event->key());
if (k >= 0)
if (k >= 0)
emu->keyboardKeys[k] = false;
}
@@ -243,71 +246,72 @@ void MainWindow::execTimer()
void MainWindow::on_addBreakButton_clicked()
{
uint32_t addr = ui->breakpointAddress->text().toUInt(nullptr, 16);
emu->breakpoints().insert(addr);
updateBreakpointsList();
uint32_t addr = ui->breakpointAddress->text().toUInt(nullptr, 16);
emu->breakpoints().insert(addr);
updateBreakpointsList();
}
void MainWindow::on_removeBreakButton_clicked()
{
uint32_t addr = ui->breakpointAddress->text().toUInt(nullptr, 16);
emu->breakpoints().erase(addr);
updateBreakpointsList();
uint32_t addr = ui->breakpointAddress->text().toUInt(nullptr, 16);
emu->breakpoints().erase(addr);
updateBreakpointsList();
}
void MainWindow::updateBreakpointsList()
{
ui->breakpointsList->clear();
for (uint32_t addr : emu->breakpoints()) {
ui->breakpointsList->addItem(QString::number(addr, 16));
}
ui->breakpointsList->clear();
for (uint32_t addr : emu->breakpoints()) {
ui->breakpointsList->addItem(QString::number(addr, 16));
}
}
void MainWindow::on_memoryViewAddress_textEdited(const QString &)
{
updateMemory();
updateMemory();
}
void MainWindow::updateMemory()
{
uint32_t virtBase = ui->memoryViewAddress->text().toUInt(nullptr, 16) & ~0xFF;
uint32_t physBase = emu->virtToPhys(virtBase);
bool ok = (physBase != 0xFFFFFFFF) && emu->isPhysAddressValid(physBase);
if (ok && (virtBase != physBase))
ui->physicalAddressLabel->setText(QStringLiteral("Physical: %1").arg(physBase, 8, 16, QLatin1Char('0')));
uint32_t virtBase = ui->memoryViewAddress->text().toUInt(nullptr, 16) & ~0xFF;
auto physBaseOpt = emu->virtToPhys(virtBase);
auto physBase = physBaseOpt.value_or(0xFFFFFFFF);
bool ok = physBaseOpt.has_value() && emu->isPhysAddressValid(physBase);
if (ok && (virtBase != physBase))
ui->physicalAddressLabel->setText(QStringLiteral("Physical: %1").arg(physBase, 8, 16, QLatin1Char('0')));
uint8_t block[0x100];
if (ok) {
for (int i = 0; i < 0x100; i++) {
block[i] = emu->readPhys8(physBase + i);
}
}
uint8_t block[0x100];
if (ok) {
for (int i = 0; i < 0x100; i++) {
block[i] = emu->readPhysical(physBase + i, ARM710a::V8).value();
}
}
QStringList output;
for (int row = 0; row < 16; row++) {
QString outLine;
outLine.reserve(8 + 2 + (2 * 16) + 3 + 16);
outLine.append(QStringLiteral("%1 |").arg(virtBase + (row * 16), 8, 16));
for (int col = 0; col < 16; col++) {
if (ok)
outLine.append(QStringLiteral(" %1").arg(block[row*16+col], 2, 16, QLatin1Char('0')));
else
outLine.append(QStringLiteral(" ??"));
}
outLine.append(QStringLiteral(" | "));
for (int col = 0; col < 16; col++) {
uint8_t byte = block[row*16+col];
if (!ok)
outLine.append('?');
else if (byte >= 0x20 && byte <= 0x7E)
outLine.append(byte);
else
outLine.append('.');
}
output.append(outLine);
}
QStringList output;
for (int row = 0; row < 16; row++) {
QString outLine;
outLine.reserve(8 + 2 + (2 * 16) + 3 + 16);
outLine.append(QStringLiteral("%1 |").arg(virtBase + (row * 16), 8, 16));
for (int col = 0; col < 16; col++) {
if (ok)
outLine.append(QStringLiteral(" %1").arg(block[row*16+col], 2, 16, QLatin1Char('0')));
else
outLine.append(QStringLiteral(" ??"));
}
outLine.append(QStringLiteral(" | "));
for (int col = 0; col < 16; col++) {
uint8_t byte = block[row*16+col];
if (!ok)
outLine.append('?');
else if (byte >= 0x20 && byte <= 0x7E)
outLine.append(byte);
else
outLine.append('.');
}
output.append(outLine);
}
ui->memoryViewLabel->setText(output.join('\n'));
ui->memoryViewLabel->setText(output.join('\n'));
}
void MainWindow::on_memoryAdd1_clicked() { adjustMemoryAddress(1); }
@@ -320,24 +324,24 @@ void MainWindow::on_memorySub10_clicked() { adjustMemoryAddress(-0x10); }
void MainWindow::on_memorySub100_clicked() { adjustMemoryAddress(-0x100); }
void MainWindow::adjustMemoryAddress(int offset) {
uint32_t address = ui->memoryViewAddress->text().toUInt(nullptr, 16);
address += offset;
ui->memoryViewAddress->setText(QString("%1").arg(address, 8, 16, QLatin1Char('0')));
updateMemory();
uint32_t address = ui->memoryViewAddress->text().toUInt(nullptr, 16);
address += offset;
ui->memoryViewAddress->setText(QString("%1").arg(address, 8, 16, QLatin1Char('0')));
updateMemory();
}
void MainWindow::on_writeByteButton_clicked()
{
uint32_t address = ui->memoryViewAddress->text().toUInt(nullptr, 16);
uint8_t value = (uint8_t)ui->memoryWriteValue->text().toUInt(nullptr, 16);
emu->writeVirt8(address, value);
updateMemory();
uint32_t address = ui->memoryViewAddress->text().toUInt(nullptr, 16);
uint8_t value = (uint8_t)ui->memoryWriteValue->text().toUInt(nullptr, 16);
emu->writeVirtual(value, address, ARM710a::V8);
updateMemory();
}
void MainWindow::on_writeDwordButton_clicked()
{
uint32_t address = ui->memoryViewAddress->text().toUInt(nullptr, 16);
uint32_t value = ui->memoryWriteValue->text().toUInt(nullptr, 16);
emu->writeVirt32(address, value);
updateMemory();
uint32_t address = ui->memoryViewAddress->text().toUInt(nullptr, 16);
uint32_t value = ui->memoryWriteValue->text().toUInt(nullptr, 16);
emu->writeVirtual(value, address, ARM710a::V32);
updateMemory();
}