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

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// Copyright 2018 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
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#include "DolphinQt/Debugger/MemoryViewWidget.h"
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#include <QApplication>
#include <QClipboard>
#include <QHeaderView>
#include <QMenu>
#include <QMouseEvent>
#include <QScrollBar>
#include <cctype>
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#include <cmath>
#include "Common/StringUtil.h"
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#include "Core/Core.h"
#include "Core/HW/AddressSpace.h"
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#include "Core/PowerPC/BreakPoints.h"
#include "Core/PowerPC/PowerPC.h"
#include "DolphinQt/Host.h"
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#include "DolphinQt/Resources.h"
#include "DolphinQt/Settings.h"
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// "Most mouse types work in steps of 15 degrees, in which case the delta value is a multiple of
// 120; i.e., 120 units * 1/8 = 15 degrees." (http://doc.qt.io/qt-5/qwheelevent.html#angleDelta)
constexpr double SCROLL_FRACTION_DEGREES = 15.;
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MemoryViewWidget::MemoryViewWidget(QWidget* parent) : QTableWidget(parent)
{
horizontalHeader()->hide();
verticalHeader()->hide();
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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setShowGrid(false);
setFont(Settings::Instance().GetDebugFont());
connect(&Settings::Instance(), &Settings::DebugFontChanged, this, &QWidget::setFont);
connect(&Settings::Instance(), &Settings::EmulationStateChanged, this, [this] { Update(); });
connect(Host::GetInstance(), &Host::UpdateDisasmDialog, this, &MemoryViewWidget::Update);
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connect(this, &MemoryViewWidget::customContextMenuRequested, this,
&MemoryViewWidget::OnContextMenu);
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connect(&Settings::Instance(), &Settings::ThemeChanged, this, &MemoryViewWidget::Update);
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setContextMenuPolicy(Qt::CustomContextMenu);
Update();
}
static int GetColumnCount(MemoryViewWidget::Type type)
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{
switch (type)
{
case MemoryViewWidget::Type::ASCII:
case MemoryViewWidget::Type::U8:
return 16;
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case MemoryViewWidget::Type::U16:
return 8;
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case MemoryViewWidget::Type::U32:
case MemoryViewWidget::Type::Float32:
return 4;
default:
return 0;
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}
}
void MemoryViewWidget::Update()
{
clearSelection();
setColumnCount(3 + GetColumnCount(m_type));
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if (rowCount() == 0)
setRowCount(1);
setRowHeight(0, 24);
const AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_address_space);
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// Calculate (roughly) how many rows will fit in our table
int rows = std::round((height() / static_cast<float>(rowHeight(0))) - 0.25);
setRowCount(rows);
for (int i = 0; i < rows; i++)
{
setRowHeight(i, 24);
u32 addr = m_address - ((rowCount() / 2) * 16) + i * 16;
auto* bp_item = new QTableWidgetItem;
bp_item->setFlags(Qt::ItemIsEnabled);
bp_item->setData(Qt::UserRole, addr);
setItem(i, 0, bp_item);
auto* addr_item = new QTableWidgetItem(QStringLiteral("%1").arg(addr, 8, 16, QLatin1Char('0')));
addr_item->setData(Qt::UserRole, addr);
addr_item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
setItem(i, 1, addr_item);
if (addr == m_address)
addr_item->setSelected(true);
if (Core::GetState() != Core::State::Paused || !accessors->IsValidAddress(addr))
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{
for (int c = 2; c < columnCount(); c++)
{
auto* item = new QTableWidgetItem(QStringLiteral("-"));
item->setFlags(Qt::ItemIsEnabled);
item->setData(Qt::UserRole, addr);
setItem(i, c, item);
}
continue;
}
if (m_address_space == AddressSpace::Type::Effective)
{
auto* description_item = new QTableWidgetItem(
QString::fromStdString(PowerPC::debug_interface.GetDescription(addr)));
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description_item->setForeground(Qt::blue);
description_item->setFlags(Qt::ItemIsEnabled);
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setItem(i, columnCount() - 1, description_item);
}
bool row_breakpoint = true;
auto update_values = [&](auto value_to_string) {
for (int c = 0; c < GetColumnCount(m_type); c++)
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{
auto* hex_item = new QTableWidgetItem;
hex_item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
const u32 address = addr + c * (16 / GetColumnCount(m_type));
if (m_address_space == AddressSpace::Type::Effective &&
PowerPC::memchecks.OverlapsMemcheck(address, 16 / GetColumnCount(m_type)))
{
hex_item->setBackground(Qt::red);
}
else
{
row_breakpoint = false;
}
setItem(i, 2 + c, hex_item);
if (accessors->IsValidAddress(address))
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{
hex_item->setText(value_to_string(address));
hex_item->setData(Qt::UserRole, address);
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}
else
{
hex_item->setFlags(0);
hex_item->setText(QStringLiteral("-"));
}
}
};
switch (m_type)
{
case Type::U8:
update_values([&accessors](u32 address) {
const u8 value = accessors->ReadU8(address);
return QStringLiteral("%1").arg(value, 2, 16, QLatin1Char('0'));
});
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break;
case Type::ASCII:
update_values([&accessors](u32 address) {
const char value = accessors->ReadU8(address);
return IsPrintableCharacter(value) ? QString{QChar::fromLatin1(value)} :
QString{QChar::fromLatin1('.')};
});
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break;
case Type::U16:
update_values([&accessors](u32 address) {
const u16 value = accessors->ReadU16(address);
return QStringLiteral("%1").arg(value, 4, 16, QLatin1Char('0'));
});
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break;
case Type::U32:
update_values([&accessors](u32 address) {
const u32 value = accessors->ReadU32(address);
return QStringLiteral("%1").arg(value, 8, 16, QLatin1Char('0'));
});
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break;
case Type::Float32:
update_values(
[&accessors](u32 address) { return QString::number(accessors->ReadF32(address)); });
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break;
}
if (row_breakpoint)
{
bp_item->setData(Qt::DecorationRole,
Resources::GetScaledThemeIcon("debugger_breakpoint").pixmap(QSize(24, 24)));
}
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}
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setColumnWidth(0, 24 + 5);
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for (int i = 1; i < columnCount(); i++)
{
resizeColumnToContents(i);
// Add some extra spacing because the default width is too small in most cases
setColumnWidth(i, columnWidth(i) * 1.1);
}
viewport()->update();
update();
}
void MemoryViewWidget::SetAddressSpace(AddressSpace::Type address_space)
{
if (m_address_space == address_space)
{
return;
}
m_address_space = address_space;
Update();
}
AddressSpace::Type MemoryViewWidget::GetAddressSpace() const
{
return m_address_space;
}
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void MemoryViewWidget::SetType(Type type)
{
if (m_type == type)
return;
m_type = type;
Update();
}
void MemoryViewWidget::SetBPType(BPType type)
{
m_bp_type = type;
}
void MemoryViewWidget::SetAddress(u32 address)
{
if (m_address == address)
return;
m_address = address;
Update();
}
void MemoryViewWidget::SetBPLoggingEnabled(bool enabled)
{
m_do_log = enabled;
}
void MemoryViewWidget::resizeEvent(QResizeEvent*)
{
Update();
}
void MemoryViewWidget::keyPressEvent(QKeyEvent* event)
{
switch (event->key())
{
case Qt::Key_Up:
m_address -= 16;
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Update();
return;
case Qt::Key_Down:
m_address += 16;
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Update();
return;
case Qt::Key_PageUp:
m_address -= rowCount() * 16;
Update();
return;
case Qt::Key_PageDown:
m_address += rowCount() * 16;
Update();
return;
default:
QWidget::keyPressEvent(event);
break;
}
}
u32 MemoryViewWidget::GetContextAddress() const
{
return m_context_address;
}
void MemoryViewWidget::ToggleRowBreakpoint(bool row)
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{
TMemCheck check;
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const u32 addr = row ? GetContextAddress() & 0xFFFFFFF0 : GetContextAddress();
const auto length = row ? 16 : (16 / GetColumnCount(m_type));
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if (m_address_space == AddressSpace::Type::Effective)
{
if (!PowerPC::memchecks.OverlapsMemcheck(addr, length))
{
check.start_address = addr;
check.end_address = check.start_address + length - 1;
check.is_ranged = length > 0;
check.is_break_on_read = (m_bp_type == BPType::ReadOnly || m_bp_type == BPType::ReadWrite);
check.is_break_on_write = (m_bp_type == BPType::WriteOnly || m_bp_type == BPType::ReadWrite);
check.log_on_hit = m_do_log;
check.break_on_hit = true;
PowerPC::memchecks.Add(check);
}
else
{
PowerPC::memchecks.Remove(addr);
}
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}
emit BreakpointsChanged();
Update();
}
void MemoryViewWidget::ToggleBreakpoint()
{
ToggleRowBreakpoint(false);
}
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void MemoryViewWidget::wheelEvent(QWheelEvent* event)
{
auto delta =
-static_cast<int>(std::round((event->angleDelta().y() / (SCROLL_FRACTION_DEGREES * 8))));
if (delta == 0)
return;
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m_address += delta * 16;
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Update();
}
void MemoryViewWidget::mousePressEvent(QMouseEvent* event)
{
auto* item = itemAt(event->pos());
if (item == nullptr)
return;
const u32 addr = item->data(Qt::UserRole).toUInt();
m_context_address = addr;
switch (event->button())
{
case Qt::LeftButton:
if (column(item) == 0)
ToggleRowBreakpoint(true);
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else
SetAddress(addr & 0xFFFFFFF0);
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Update();
break;
default:
break;
}
}
void MemoryViewWidget::OnCopyAddress()
{
u32 addr = GetContextAddress();
QApplication::clipboard()->setText(QStringLiteral("%1").arg(addr, 8, 16, QLatin1Char('0')));
}
void MemoryViewWidget::OnCopyHex()
{
u32 addr = GetContextAddress();
const auto length = 16 / GetColumnCount(m_type);
const AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_address_space);
u64 value = accessors->ReadU64(addr);
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QApplication::clipboard()->setText(
QStringLiteral("%1").arg(value, sizeof(u64) * 2, 16, QLatin1Char('0')).left(length * 2));
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}
void MemoryViewWidget::OnContextMenu()
{
auto* menu = new QMenu(this);
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menu->addAction(tr("Copy Address"), this, &MemoryViewWidget::OnCopyAddress);
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auto* copy_hex = menu->addAction(tr("Copy Hex"), this, &MemoryViewWidget::OnCopyHex);
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const AddressSpace::Accessors* accessors = AddressSpace::GetAccessors(m_address_space);
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copy_hex->setEnabled(Core::GetState() != Core::State::Uninitialized &&
accessors->IsValidAddress(GetContextAddress()));
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menu->addSeparator();
menu->addAction(tr("Show in code"), this, [this] { emit ShowCode(GetContextAddress()); });
menu->addSeparator();
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menu->addAction(tr("Toggle Breakpoint"), this, &MemoryViewWidget::ToggleBreakpoint);
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menu->exec(QCursor::pos());
}