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dolphin/Source/Core/DolphinQt/Debugger/ThreadWidget.cpp

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// Copyright 2020 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "DolphinQt/Debugger/ThreadWidget.h"
#include <QGroupBox>
#include <QHeaderView>
#include <QLabel>
#include <QLineEdit>
#include <QMenu>
#include <QTableWidget>
#include <QVBoxLayout>
#include "Common/BitUtils.h"
#include "Core/Core.h"
#include "Core/PowerPC/MMU.h"
#include "Core/PowerPC/PowerPC.h"
#include "DolphinQt/Host.h"
#include "DolphinQt/QtUtils/FontMetricsHelper.h"
#include "DolphinQt/Settings.h"
ThreadWidget::ThreadWidget(QWidget* parent) : QDockWidget(parent)
{
setWindowTitle(tr("Threads"));
setObjectName(QStringLiteral("threads"));
setHidden(!Settings::Instance().IsThreadsVisible() || !Settings::Instance().IsDebugModeEnabled());
setAllowedAreas(Qt::AllDockWidgetAreas);
CreateWidgets();
auto& settings = Settings::GetQSettings();
restoreGeometry(settings.value(QStringLiteral("threadwidget/geometry")).toByteArray());
// macOS: setHidden() needs to be evaluated before setFloating() for proper window presentation
// according to Settings
setFloating(settings.value(QStringLiteral("threadwidget/floating")).toBool());
ConnectWidgets();
connect(Host::GetInstance(), &Host::UpdateDisasmDialog, this, &ThreadWidget::Update);
connect(&Settings::Instance(), &Settings::ThreadsVisibilityChanged,
[this](bool visible) { setHidden(!visible); });
connect(&Settings::Instance(), &Settings::DebugModeToggled, [this](bool enabled) {
setHidden(!enabled || !Settings::Instance().IsThreadsVisible());
});
}
ThreadWidget::~ThreadWidget()
{
auto& settings = Settings::GetQSettings();
settings.setValue(QStringLiteral("threadwidget/geometry"), saveGeometry());
settings.setValue(QStringLiteral("threadwidget/floating"), isFloating());
}
void ThreadWidget::closeEvent(QCloseEvent*)
{
Settings::Instance().SetThreadsVisible(false);
}
void ThreadWidget::showEvent(QShowEvent* event)
{
Update();
}
void ThreadWidget::CreateWidgets()
{
m_state = new QGroupBox(tr("State"));
auto* state_layout = new QHBoxLayout;
m_state->setLayout(state_layout);
state_layout->addWidget(CreateContextGroup());
state_layout->addWidget(CreateActiveThreadQueueGroup());
state_layout->setContentsMargins(2, 2, 2, 2);
state_layout->setSpacing(1);
auto* widget = new QWidget;
auto* layout = new QVBoxLayout;
widget->setLayout(layout);
layout->addWidget(m_state);
layout->addWidget(CreateThreadGroup());
layout->addWidget(CreateThreadContextGroup());
layout->addWidget(CreateThreadCallstackGroup());
layout->addItem(new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Expanding));
setWidget(widget);
Update();
UpdateThreadContext({});
}
void ThreadWidget::ConnectWidgets()
{
connect(m_thread_table->selectionModel(), &QItemSelectionModel::selectionChanged,
[this](const QItemSelection& selected, const QItemSelection& deselected) {
const auto indexes = selected.indexes();
const int row = indexes.empty() ? -1 : indexes.first().row();
OnSelectionChanged(row);
});
connect(m_context_table, &QTableWidget::customContextMenuRequested,
[this] { ShowContextMenu(m_context_table); });
connect(m_callstack_table, &QTableWidget::customContextMenuRequested,
[this] { ShowContextMenu(m_callstack_table); });
}
void ThreadWidget::ShowContextMenu(QTableWidget* table)
{
const auto* item = static_cast<QTableWidgetItem*>(table->currentItem());
if (item == nullptr)
return;
bool ok;
const u32 addr = item->text().toUInt(&ok, 16);
if (!ok)
return;
QMenu* menu = new QMenu(this);
const QString watch_name = QStringLiteral("thread_context_%1").arg(addr, 8, 16, QLatin1Char('0'));
menu->addAction(tr("Add &breakpoint"), this, [this, addr] { emit RequestBreakpoint(addr); });
menu->addAction(tr("Add memory breakpoint"), this,
[this, addr] { emit RequestMemoryBreakpoint(addr); });
menu->addAction(tr("Add to &watch"), this,
[this, addr, watch_name] { emit RequestWatch(watch_name, addr); });
menu->addAction(tr("View &memory"), this, [this, addr] { emit RequestViewInMemory(addr); });
menu->addAction(tr("View &code"), this, [this, addr] { emit RequestViewInCode(addr); });
menu->exec(QCursor::pos());
}
QLineEdit* ThreadWidget::CreateLineEdit() const
{
QLineEdit* line_edit = new QLineEdit(QLatin1Literal("00000000"));
line_edit->setReadOnly(true);
line_edit->setFixedWidth(
FontMetricsWidth(line_edit->fontMetrics(), QLatin1Literal(" 00000000 ")));
return line_edit;
}
QGroupBox* ThreadWidget::CreateContextGroup()
{
QGroupBox* context_group = new QGroupBox(tr("Thread context"));
QGridLayout* context_layout = new QGridLayout;
context_group->setLayout(context_layout);
context_layout->addWidget(new QLabel(tr("Current context")), 0, 0);
m_current_context = CreateLineEdit();
context_layout->addWidget(m_current_context, 0, 1);
context_layout->addWidget(new QLabel(tr("Current thread")), 1, 0);
m_current_thread = CreateLineEdit();
context_layout->addWidget(m_current_thread, 1, 1);
context_layout->addWidget(new QLabel(tr("Default thread")), 2, 0);
m_default_thread = CreateLineEdit();
context_layout->addWidget(m_default_thread, 2, 1);
context_layout->setSpacing(1);
return context_group;
}
QGroupBox* ThreadWidget::CreateActiveThreadQueueGroup()
{
QGroupBox* thread_queue_group = new QGroupBox(tr("Active thread queue"));
auto* thread_queue_layout = new QGridLayout;
thread_queue_group->setLayout(thread_queue_layout);
thread_queue_layout->addWidget(new QLabel(tr("Head")), 0, 0);
m_queue_head = CreateLineEdit();
thread_queue_layout->addWidget(m_queue_head, 0, 1);
thread_queue_layout->addWidget(new QLabel(tr("Tail")), 1, 0);
m_queue_tail = CreateLineEdit();
thread_queue_layout->addWidget(m_queue_tail, 1, 1);
thread_queue_layout->setSpacing(1);
return thread_queue_group;
}
QGroupBox* ThreadWidget::CreateThreadGroup()
{
QGroupBox* thread_group = new QGroupBox(tr("Active threads"));
QGridLayout* thread_layout = new QGridLayout;
thread_group->setLayout(thread_layout);
m_thread_table = new QTableWidget();
QStringList header{tr("Address"),
tr("State"),
tr("Detached"),
tr("Suspended"),
QStringLiteral("%1\n(%2)").arg(tr("Base priority"), tr("Effective priority")),
QStringLiteral("%1\n%2").arg(tr("Stack end"), tr("Stack start")),
tr("errno"),
tr("Specific")};
m_thread_table->setColumnCount(header.size());
m_thread_table->setHorizontalHeaderLabels(header);
m_thread_table->setTabKeyNavigation(false);
m_thread_table->verticalHeader()->setVisible(false);
m_thread_table->setEditTriggers(QAbstractItemView::NoEditTriggers);
m_thread_table->setSelectionBehavior(QAbstractItemView::SelectRows);
m_thread_table->setSelectionMode(QAbstractItemView::SingleSelection);
m_thread_table->setWordWrap(false);
thread_layout->addWidget(m_thread_table, 0, 0);
thread_layout->setSpacing(1);
return thread_group;
}
QGroupBox* ThreadWidget::CreateThreadContextGroup()
{
QGroupBox* thread_context_group = new QGroupBox(tr("Selected thread context"));
QGridLayout* thread_context_layout = new QGridLayout;
thread_context_group->setLayout(thread_context_layout);
m_context_table = new QTableWidget();
m_context_table->setColumnCount(8); // GPR, FPR, PSF, (GQR+others)
m_context_table->setRowCount(32);
m_context_table->setTabKeyNavigation(false);
m_context_table->horizontalHeader()->setVisible(false);
m_context_table->verticalHeader()->setVisible(false);
m_context_table->setEditTriggers(QAbstractItemView::NoEditTriggers);
m_context_table->setSelectionBehavior(QAbstractItemView::SelectItems);
m_context_table->setSelectionMode(QAbstractItemView::SingleSelection);
m_context_table->setContextMenuPolicy(Qt::CustomContextMenu);
thread_context_layout->addWidget(m_context_table, 0, 0);
thread_context_layout->setSpacing(1);
return thread_context_group;
}
QGroupBox* ThreadWidget::CreateThreadCallstackGroup()
{
QGroupBox* thread_callstack_group = new QGroupBox(tr("Selected thread callstack"));
QGridLayout* thread_callstack_layout = new QGridLayout;
thread_callstack_group->setLayout(thread_callstack_layout);
m_callstack_table = new QTableWidget();
QStringList header{tr("Address"), tr("Back Chain"), tr("LR Save"), tr("Description")};
m_callstack_table->setColumnCount(header.size());
m_callstack_table->setHorizontalHeaderLabels(header);
m_callstack_table->setRowCount(0);
m_callstack_table->setTabKeyNavigation(false);
m_callstack_table->verticalHeader()->setVisible(false);
m_callstack_table->setEditTriggers(QAbstractItemView::NoEditTriggers);
m_callstack_table->setSelectionBehavior(QAbstractItemView::SelectItems);
m_callstack_table->setSelectionMode(QAbstractItemView::SingleSelection);
m_callstack_table->setContextMenuPolicy(Qt::CustomContextMenu);
thread_callstack_layout->addWidget(m_callstack_table, 0, 0);
thread_callstack_layout->setSpacing(1);
return thread_callstack_group;
}
void ThreadWidget::Update()
{
if (!isVisible())
return;
const auto state = Core::GetState();
if (state == Core::State::Stopping)
{
m_thread_table->setRowCount(0);
UpdateThreadContext({});
UpdateThreadCallstack({});
}
if (state != Core::State::Paused)
return;
const auto format_hex = [](u32 value) {
return QStringLiteral("%1").arg(value, 8, 16, QLatin1Char('0'));
};
const auto format_f64_as_u64 = [](double value) {
return QStringLiteral("%1").arg(Common::BitCast<u64>(value), 16, 16, QLatin1Char('0'));
};
const auto format_hex_from = [&format_hex](u32 addr) {
addr = PowerPC::HostIsRAMAddress(addr) ? PowerPC::HostRead_U32(addr) : 0;
return format_hex(addr);
};
const auto get_state = [](u16 state) {
QString state_name;
switch (state)
{
case 1:
state_name = tr("READY");
break;
case 2:
state_name = tr("RUNNING");
break;
case 4:
state_name = tr("WAITING");
break;
case 8:
state_name = tr("MORIBUND");
break;
default:
state_name = tr("UNKNOWN");
}
return QStringLiteral("%1 (%2)").arg(QString::number(state), state_name);
};
const auto get_priority = [](u16 base, u16 effective) {
return QStringLiteral("%1 (%2)").arg(QString::number(base), QString::number(effective));
};
const auto get_stack = [](u32 end, u32 start) {
return QStringLiteral("%1\n%2")
.arg(end, 8, 16, QLatin1Char('0'))
.arg(start, 8, 16, QLatin1Char('0'));
};
// YAGCD - Section 4.2.1.4 Dolphin OS Globals
m_current_context->setText(format_hex_from(0x800000D4));
m_current_thread->setText(format_hex_from(0x800000E4));
m_default_thread->setText(format_hex_from(0x800000D8));
m_queue_head->setText(format_hex_from(0x800000DC));
m_queue_tail->setText(format_hex_from(0x800000E0));
// Thread group
m_threads = PowerPC::debug_interface.GetThreads();
int i = 0;
m_thread_table->setRowCount(i);
for (const auto& thread : m_threads)
{
m_thread_table->insertRow(i);
m_thread_table->setItem(i, 0, new QTableWidgetItem(format_hex(thread->GetAddress())));
m_thread_table->setItem(i, 1, new QTableWidgetItem(get_state(thread->GetState())));
m_thread_table->setItem(i, 2, new QTableWidgetItem(QString::number(thread->IsDetached())));
m_thread_table->setItem(i, 3, new QTableWidgetItem(QString::number(thread->IsSuspended())));
m_thread_table->setItem(i, 4,
new QTableWidgetItem(get_priority(thread->GetBasePriority(),
thread->GetEffectivePriority())));
m_thread_table->setItem(
i, 5, new QTableWidgetItem(get_stack(thread->GetStackEnd(), thread->GetStackStart())));
m_thread_table->setItem(i, 6, new QTableWidgetItem(QString::number(thread->GetErrno())));
m_thread_table->setItem(i, 7,
new QTableWidgetItem(QString::fromStdString(thread->GetSpecific())));
i += 1;
}
m_thread_table->resizeColumnsToContents();
m_thread_table->resizeRowsToContents();
// Thread's context group
UpdateThreadContext({});
}
void ThreadWidget::UpdateThreadContext(const Common::Debug::PartialContext& context)
{
const auto format_hex = [](const std::optional<u32>& value) {
if (!value)
return QString{};
return QStringLiteral("%1").arg(*value, 8, 16, QLatin1Char('0'));
};
const auto format_hex_idx = [](const auto& table, std::size_t index) {
if (!table || index >= table->size())
return QString{};
return QStringLiteral("%1").arg(table->at(index), 8, 16, QLatin1Char('0'));
};
const auto format_f64_as_u64_idx = [](const auto& table, std::size_t index) {
if (!table || index >= table->size())
return QString{};
return QStringLiteral("%1").arg(Common::BitCast<u64>(table->at(index)), 16, 16,
QLatin1Char('0'));
};
m_context_table->setRowCount(0);
for (int i = 0; i < 32; i++)
{
m_context_table->insertRow(i);
m_context_table->setItem(i, 0, new QTableWidgetItem(QStringLiteral("GPR%1").arg(i)));
m_context_table->setItem(i, 1, new QTableWidgetItem(format_hex_idx(context.gpr, i)));
m_context_table->setItem(i, 2, new QTableWidgetItem(QStringLiteral("FPR%1").arg(i)));
m_context_table->setItem(i, 3, new QTableWidgetItem(format_f64_as_u64_idx(context.fpr, i)));
m_context_table->setItem(i, 4, new QTableWidgetItem(QStringLiteral("PSF%1").arg(i)));
m_context_table->setItem(i, 5, new QTableWidgetItem(format_f64_as_u64_idx(context.psf, i)));
if (i < 8)
{
m_context_table->setItem(i, 6, new QTableWidgetItem(QStringLiteral("GQR%1").arg(i)));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex_idx(context.gqr, i)));
continue;
}
switch (i)
{
case 8:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("CR")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.cr)));
break;
case 9:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("LR")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.lr)));
break;
case 10:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("CTR")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.ctr)));
break;
case 11:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("XER")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.xer)));
break;
case 12:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("FPSCR")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.fpscr)));
break;
case 13:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("SRR0")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.srr0)));
break;
case 14:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("SRR1")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.srr1)));
break;
case 15:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("DUMMY")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.dummy)));
break;
case 16:
m_context_table->setItem(i, 6, new QTableWidgetItem(QLatin1Literal("STATE")));
m_context_table->setItem(i, 7, new QTableWidgetItem(format_hex(context.state)));
break;
default:
for (int j = 6; j <= 7; j++)
{
auto* disabled_item = new QTableWidgetItem();
auto flags = disabled_item->flags();
flags &= ~Qt::ItemIsSelectable;
flags &= ~Qt::ItemIsEditable;
flags &= ~Qt::ItemIsEnabled;
disabled_item->setFlags(flags);
disabled_item->setBackground(Qt::gray);
m_context_table->setItem(i, j, disabled_item);
}
}
}
m_context_table->resizeColumnsToContents();
}
void ThreadWidget::UpdateThreadCallstack(const Common::Debug::PartialContext& context)
{
m_callstack_table->setRowCount(0);
if (!context.gpr)
return;
const auto format_hex = [](u32 value) {
return QStringLiteral("%1").arg(value, 8, 16, QLatin1Char('0'));
};
u32 sp = context.gpr->at(1);
for (int i = 0; i < 16; i++)
{
if (sp == 0 || sp == 0xffffffff || !PowerPC::HostIsRAMAddress(sp))
break;
m_callstack_table->insertRow(i);
m_callstack_table->setItem(i, 0, new QTableWidgetItem(format_hex(sp)));
if (PowerPC::HostIsRAMAddress(sp + 4))
{
const u32 lr_save = PowerPC::HostRead_U32(sp + 4);
m_callstack_table->setItem(i, 2, new QTableWidgetItem(format_hex(lr_save)));
m_callstack_table->setItem(i, 3,
new QTableWidgetItem(QString::fromStdString(
PowerPC::debug_interface.GetDescription(lr_save))));
}
else
{
m_callstack_table->setItem(i, 2, new QTableWidgetItem(QLatin1Literal("--------")));
}
sp = PowerPC::HostRead_U32(sp);
m_callstack_table->setItem(i, 1, new QTableWidgetItem(format_hex(sp)));
}
}
void ThreadWidget::OnSelectionChanged(int row)
{
Common::Debug::PartialContext context;
if (row >= 0 && row < m_threads.size())
context = m_threads[row]->GetContext();
UpdateThreadContext(context);
UpdateThreadCallstack(context);
}
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