dolphin/Source/Core/DolphinQt/Debugger/CodeViewWidget.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/CodeViewWidget.h"
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#include <algorithm>
#include <cmath>
#include <QApplication>
#include <QClipboard>
#include <QHeaderView>
#include <QInputDialog>
#include <QKeyEvent>
#include <QMenu>
#include <QMouseEvent>
#include <QResizeEvent>
#include <QScrollBar>
#include <QTableWidgetItem>
#include <QWheelEvent>
#include "Common/StringUtil.h"
#include "Core/Core.h"
#include "Core/Debugger/PPCDebugInterface.h"
#include "Core/PowerPC/MMU.h"
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#include "Core/PowerPC/PPCAnalyst.h"
#include "Core/PowerPC/PPCSymbolDB.h"
#include "Core/PowerPC/PowerPC.h"
#include "DolphinQt/Debugger/PatchInstructionDialog.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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constexpr size_t VALID_BRANCH_LENGTH = 10;
CodeViewWidget::CodeViewWidget()
{
setColumnCount(5);
setShowGrid(false);
setContextMenuPolicy(Qt::CustomContextMenu);
setSelectionMode(QAbstractItemView::SingleSelection);
setSelectionBehavior(QAbstractItemView::SelectRows);
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setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
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verticalHeader()->hide();
horizontalHeader()->hide();
setFont(Settings::Instance().GetDebugFont());
FontBasedSizing();
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connect(this, &CodeViewWidget::customContextMenuRequested, this, &CodeViewWidget::OnContextMenu);
connect(this, &CodeViewWidget::itemSelectionChanged, this, &CodeViewWidget::OnSelectionChanged);
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connect(&Settings::Instance(), &Settings::DebugFontChanged, this, &QWidget::setFont);
connect(&Settings::Instance(), &Settings::DebugFontChanged, this,
&CodeViewWidget::FontBasedSizing);
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connect(&Settings::Instance(), &Settings::EmulationStateChanged, this, [this] {
m_address = PC;
Update();
});
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connect(&Settings::Instance(), &Settings::ThemeChanged, this, &CodeViewWidget::Update);
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}
static u32 GetBranchFromAddress(u32 addr)
{
std::string disasm = PowerPC::debug_interface.Disassemble(addr);
size_t pos = disasm.find("->0x");
if (pos == std::string::npos)
return 0;
std::string hex = disasm.substr(pos + 2);
return std::stoul(hex, nullptr, 16);
}
void CodeViewWidget::FontBasedSizing()
{
const QFontMetrics fm(Settings::Instance().GetDebugFont());
const int rowh = fm.height() + 1;
verticalHeader()->setMaximumSectionSize(rowh);
horizontalHeader()->setMinimumSectionSize(rowh + 5);
setColumnWidth(0, rowh + 5);
Update();
}
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void CodeViewWidget::Update()
{
if (m_updating)
return;
m_updating = true;
clearSelection();
if (rowCount() == 0)
setRowCount(1);
// Calculate (roughly) how many rows will fit in our table
int rows = std::round((height() / static_cast<float>(rowHeight(0))) - 0.25);
setRowCount(rows);
const QFontMetrics fm(Settings::Instance().GetDebugFont());
const int rowh = fm.height() + 1;
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for (int i = 0; i < rows; i++)
setRowHeight(i, rowh);
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u32 pc = PowerPC::ppcState.pc;
if (Core::GetState() != Core::State::Paused && PowerPC::debug_interface.IsBreakpoint(pc))
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Core::SetState(Core::State::Paused);
const bool dark_theme = qApp->palette().color(QPalette::Base).valueF() < 0.5;
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for (int i = 0; i < rowCount(); i++)
{
u32 addr = m_address - ((rowCount() / 2) * 4) + i * 4;
u32 color = PowerPC::debug_interface.GetColor(addr);
auto* bp_item = new QTableWidgetItem;
auto* addr_item = new QTableWidgetItem(QStringLiteral("%1").arg(addr, 8, 16, QLatin1Char('0')));
std::string disas = PowerPC::debug_interface.Disassemble(addr);
auto split = disas.find('\t');
std::string ins = (split == std::string::npos ? disas : disas.substr(0, split));
std::string param = (split == std::string::npos ? "" : disas.substr(split + 1));
std::string desc = PowerPC::debug_interface.GetDescription(addr);
// Adds whitespace and a minimum size to ins and param. Helps to prevent frequent resizing while
// scrolling.
const QString ins_formatted =
QStringLiteral("%1").arg(QString::fromStdString(ins), -7, QLatin1Char(' '));
const QString param_formatted =
QStringLiteral("%1").arg(QString::fromStdString(param), -19, QLatin1Char(' '));
const QString desc_formatted = QStringLiteral("%1 ").arg(QString::fromStdString(desc));
auto* ins_item = new QTableWidgetItem(ins_formatted);
auto* param_item = new QTableWidgetItem(param_formatted);
auto* description_item = new QTableWidgetItem(desc_formatted);
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for (auto* item : {bp_item, addr_item, ins_item, param_item, description_item})
{
item->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable);
item->setData(Qt::UserRole, addr);
if (addr == pc && item != bp_item)
{
item->setBackground(QColor(Qt::green));
item->setForeground(QColor(Qt::black));
}
else if (color != 0xFFFFFF)
{
item->setBackground(dark_theme ? QColor(color).darker(240) : QColor(color));
}
}
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// look for hex strings to decode branches
std::string hex_str;
size_t pos = param.find("0x");
if (pos != std::string::npos)
{
hex_str = param.substr(pos);
}
if (hex_str.length() == VALID_BRANCH_LENGTH && desc != "---")
{
description_item->setText(tr("--> %1").arg(QString::fromStdString(
PowerPC::debug_interface.GetDescription(GetBranchFromAddress(addr)))));
param_item->setForeground(Qt::magenta);
}
if (ins == "blr")
ins_item->setForeground(dark_theme ? QColor(0xa0FFa0) : Qt::darkGreen);
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if (PowerPC::debug_interface.IsBreakpoint(addr))
{
bp_item->setData(
Qt::DecorationRole,
Resources::GetScaledThemeIcon("debugger_breakpoint").pixmap(QSize(rowh - 2, rowh - 2)));
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}
setItem(i, 0, bp_item);
setItem(i, 1, addr_item);
setItem(i, 2, ins_item);
setItem(i, 3, param_item);
setItem(i, 4, description_item);
if (addr == GetAddress())
{
selectRow(addr_item->row());
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}
}
resizeColumnsToContents();
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g_symbolDB.FillInCallers();
repaint();
m_updating = false;
}
u32 CodeViewWidget::GetAddress() const
{
return m_address;
}
void CodeViewWidget::SetAddress(u32 address, SetAddressUpdate update)
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{
if (m_address == address)
return;
m_address = address;
if (update == SetAddressUpdate::WithUpdate)
Update();
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}
void CodeViewWidget::ReplaceAddress(u32 address, ReplaceWith replace)
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{
PowerPC::debug_interface.UnsetPatch(address);
PowerPC::debug_interface.SetPatch(address, replace == ReplaceWith::BLR ? 0x4e800020 : 0x60000000);
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Update();
}
void CodeViewWidget::OnContextMenu()
{
QMenu* menu = new QMenu(this);
bool running = Core::GetState() != Core::State::Uninitialized;
const u32 addr = GetContextAddress();
bool has_symbol = g_symbolDB.GetSymbolFromAddr(addr);
auto* follow_branch_action =
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menu->addAction(tr("Follow &branch"), this, &CodeViewWidget::OnFollowBranch);
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menu->addSeparator();
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menu->addAction(tr("&Copy address"), this, &CodeViewWidget::OnCopyAddress);
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auto* copy_address_action =
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menu->addAction(tr("Copy &function"), this, &CodeViewWidget::OnCopyFunction);
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auto* copy_line_action =
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menu->addAction(tr("Copy code &line"), this, &CodeViewWidget::OnCopyCode);
auto* copy_hex_action = menu->addAction(tr("Copy &hex"), this, &CodeViewWidget::OnCopyHex);
menu->addAction(tr("Show in &memory"), this, &CodeViewWidget::OnShowInMemory);
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menu->addSeparator();
auto* symbol_rename_action =
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menu->addAction(tr("&Rename symbol"), this, &CodeViewWidget::OnRenameSymbol);
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auto* symbol_size_action =
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menu->addAction(tr("Set symbol &size"), this, &CodeViewWidget::OnSetSymbolSize);
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auto* symbol_end_action =
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menu->addAction(tr("Set symbol &end address"), this, &CodeViewWidget::OnSetSymbolEndAddress);
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menu->addSeparator();
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menu->addAction(tr("Run &To Here"), this, &CodeViewWidget::OnRunToHere);
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auto* function_action =
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menu->addAction(tr("&Add function"), this, &CodeViewWidget::OnAddFunction);
auto* ppc_action = menu->addAction(tr("PPC vs Host"), this, &CodeViewWidget::OnPPCComparison);
auto* insert_blr_action = menu->addAction(tr("&Insert blr"), this, &CodeViewWidget::OnInsertBLR);
auto* insert_nop_action = menu->addAction(tr("Insert &nop"), this, &CodeViewWidget::OnInsertNOP);
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auto* replace_action =
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menu->addAction(tr("Re&place instruction"), this, &CodeViewWidget::OnReplaceInstruction);
auto* restore_action =
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menu->addAction(tr("Restore instruction"), this, &CodeViewWidget::OnRestoreInstruction);
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follow_branch_action->setEnabled(running && GetBranchFromAddress(addr));
for (auto* action : {copy_address_action, copy_line_action, copy_hex_action, function_action,
ppc_action, insert_blr_action, insert_nop_action, replace_action})
action->setEnabled(running);
for (auto* action : {symbol_rename_action, symbol_size_action, symbol_end_action})
action->setEnabled(has_symbol);
restore_action->setEnabled(running && PowerPC::debug_interface.HasEnabledPatch(addr));
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menu->exec(QCursor::pos());
Update();
}
void CodeViewWidget::OnCopyAddress()
{
const u32 addr = GetContextAddress();
QApplication::clipboard()->setText(QStringLiteral("%1").arg(addr, 8, 16, QLatin1Char('0')));
}
void CodeViewWidget::OnShowInMemory()
{
emit ShowMemory(GetContextAddress());
}
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void CodeViewWidget::OnCopyCode()
{
const u32 addr = GetContextAddress();
QApplication::clipboard()->setText(
QString::fromStdString(PowerPC::debug_interface.Disassemble(addr)));
}
void CodeViewWidget::OnCopyFunction()
{
const u32 address = GetContextAddress();
const Common::Symbol* symbol = g_symbolDB.GetSymbolFromAddr(address);
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if (!symbol)
return;
std::string text = symbol->name + "\r\n";
// we got a function
const u32 start = symbol->address;
const u32 end = start + symbol->size;
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for (u32 addr = start; addr != end; addr += 4)
{
const std::string disasm = PowerPC::debug_interface.Disassemble(addr);
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text += StringFromFormat("%08x: ", addr) + disasm + "\r\n";
}
QApplication::clipboard()->setText(QString::fromStdString(text));
}
void CodeViewWidget::OnCopyHex()
{
const u32 addr = GetContextAddress();
const u32 instruction = PowerPC::debug_interface.ReadInstruction(addr);
QApplication::clipboard()->setText(
QStringLiteral("%1").arg(instruction, 8, 16, QLatin1Char('0')));
}
void CodeViewWidget::OnRunToHere()
{
const u32 addr = GetContextAddress();
PowerPC::debug_interface.SetBreakpoint(addr);
PowerPC::debug_interface.RunToBreakpoint();
Update();
}
void CodeViewWidget::OnPPCComparison()
{
const u32 addr = GetContextAddress();
emit RequestPPCComparison(addr);
}
void CodeViewWidget::OnAddFunction()
{
const u32 addr = GetContextAddress();
g_symbolDB.AddFunction(addr);
emit SymbolsChanged();
Update();
}
void CodeViewWidget::OnInsertBLR()
{
const u32 addr = GetContextAddress();
ReplaceAddress(addr, ReplaceWith::BLR);
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}
void CodeViewWidget::OnInsertNOP()
{
const u32 addr = GetContextAddress();
ReplaceAddress(addr, ReplaceWith::NOP);
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}
void CodeViewWidget::OnFollowBranch()
{
const u32 addr = GetContextAddress();
u32 branch_addr = GetBranchFromAddress(addr);
if (!branch_addr)
return;
SetAddress(branch_addr, SetAddressUpdate::WithUpdate);
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}
void CodeViewWidget::OnRenameSymbol()
{
const u32 addr = GetContextAddress();
Common::Symbol* symbol = g_symbolDB.GetSymbolFromAddr(addr);
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if (!symbol)
return;
bool good;
QString name =
QInputDialog::getText(this, tr("Rename symbol"), tr("Symbol name:"), QLineEdit::Normal,
QString::fromStdString(symbol->name), &good);
if (good && !name.isEmpty())
{
symbol->Rename(name.toStdString());
emit SymbolsChanged();
Update();
}
}
void CodeViewWidget::OnSelectionChanged()
{
if (m_address == PowerPC::ppcState.pc)
{
setStyleSheet(
QStringLiteral("QTableView::item:selected {background-color: #00FF00; color: #000000;}"));
}
else if (!styleSheet().isEmpty())
{
setStyleSheet(QStringLiteral(""));
}
}
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void CodeViewWidget::OnSetSymbolSize()
{
const u32 addr = GetContextAddress();
Common::Symbol* symbol = g_symbolDB.GetSymbolFromAddr(addr);
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if (!symbol)
return;
bool good;
int size =
QInputDialog::getInt(this, tr("Rename symbol"),
tr("Set symbol size (%1):").arg(QString::fromStdString(symbol->name)),
symbol->size, 1, 0xFFFF, 1, &good);
if (!good)
return;
PPCAnalyst::ReanalyzeFunction(symbol->address, *symbol, size);
emit SymbolsChanged();
Update();
}
void CodeViewWidget::OnSetSymbolEndAddress()
{
const u32 addr = GetContextAddress();
Common::Symbol* symbol = g_symbolDB.GetSymbolFromAddr(addr);
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if (!symbol)
return;
bool good;
QString name = QInputDialog::getText(
this, tr("Set symbol end address"),
tr("Symbol (%1) end address:").arg(QString::fromStdString(symbol->name)), QLineEdit::Normal,
QStringLiteral("%1").arg(addr + symbol->size, 8, 16, QLatin1Char('0')), &good);
u32 address = name.toUInt(&good, 16);
if (!good)
return;
PPCAnalyst::ReanalyzeFunction(symbol->address, *symbol, address - symbol->address);
emit SymbolsChanged();
Update();
}
void CodeViewWidget::OnReplaceInstruction()
{
const u32 addr = GetContextAddress();
if (!PowerPC::HostIsInstructionRAMAddress(addr))
return;
const PowerPC::TryReadInstResult read_result = PowerPC::TryReadInstruction(addr);
if (!read_result.valid)
return;
PatchInstructionDialog dialog(this, addr, PowerPC::debug_interface.ReadInstruction(addr));
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if (dialog.exec() == QDialog::Accepted)
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{
PowerPC::debug_interface.UnsetPatch(addr);
PowerPC::debug_interface.SetPatch(addr, dialog.GetCode());
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Update();
}
}
void CodeViewWidget::OnRestoreInstruction()
{
const u32 addr = GetContextAddress();
PowerPC::debug_interface.UnsetPatch(addr);
Update();
}
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void CodeViewWidget::resizeEvent(QResizeEvent*)
{
Update();
}
void CodeViewWidget::keyPressEvent(QKeyEvent* event)
{
switch (event->key())
{
case Qt::Key_Up:
m_address -= sizeof(u32);
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Update();
return;
case Qt::Key_Down:
m_address += sizeof(u32);
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Update();
return;
case Qt::Key_PageUp:
m_address -= rowCount() * sizeof(u32);
Update();
return;
case Qt::Key_PageDown:
m_address += rowCount() * sizeof(u32);
Update();
return;
default:
QWidget::keyPressEvent(event);
break;
}
}
void CodeViewWidget::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 * sizeof(u32);
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Update();
}
void CodeViewWidget::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)
ToggleBreakpoint();
else
SetAddress(addr, SetAddressUpdate::WithUpdate);
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Update();
break;
default:
break;
}
}
void CodeViewWidget::ToggleBreakpoint()
{
if (PowerPC::debug_interface.IsBreakpoint(GetContextAddress()))
PowerPC::breakpoints.Remove(GetContextAddress());
else
PowerPC::breakpoints.Add(GetContextAddress());
emit BreakpointsChanged();
Update();
}
void CodeViewWidget::AddBreakpoint()
{
PowerPC::breakpoints.Add(GetContextAddress());
emit BreakpointsChanged();
Update();
}
u32 CodeViewWidget::GetContextAddress() const
{
return m_context_address;
}