66 files changed, 2279 insertions, 379 deletions

diff --git a/src/citra/emu_window/emu_window_glfw.cpp b/src/citra/emu_window/emu_window_glfw.cpp
index 697bf4693..982619126 100644
--- a/src/citra/emu_window/emu_window_glfw.cpp
+++ b/src/citra/emu_window/emu_window_glfw.cpp
@@ -76,9 +76,9 @@ EmuWindow_GLFW::EmuWindow_GLFW() {
     std::string window_title = Common::StringFromFormat("Citra | %s-%s", Common::g_scm_branch, Common::g_scm_desc);
     m_render_window = glfwCreateWindow(VideoCore::kScreenTopWidth,
         (VideoCore::kScreenTopHeight + VideoCore::kScreenBottomHeight),
-        window_title.c_str(), NULL, NULL);
+        window_title.c_str(), nullptr, nullptr);
 
-    if (m_render_window == NULL) {
+    if (m_render_window == nullptr) {
         ERROR_LOG(GUI, "Failed to create GLFW window! Exiting...");
         exit(1);
     }
@@ -123,7 +123,7 @@ void EmuWindow_GLFW::MakeCurrent() {
 
 /// Releases (dunno if this is the "right" word) the GLFW context from the caller thread
 void EmuWindow_GLFW::DoneCurrent() {
-    glfwMakeContextCurrent(NULL);
+    glfwMakeContextCurrent(nullptr);
 }
 
 void EmuWindow_GLFW::ReloadSetKeymaps() {
diff --git a/src/citra_qt/CMakeLists.txt b/src/citra_qt/CMakeLists.txt
index 98a48a69a..90e5c6aa6 100644
--- a/src/citra_qt/CMakeLists.txt
+++ b/src/citra_qt/CMakeLists.txt
@@ -8,9 +8,12 @@ set(SRCS
             debugger/callstack.cpp
             debugger/disassembler.cpp
             debugger/graphics.cpp
+            debugger/graphics_breakpoints.cpp
             debugger/graphics_cmdlists.cpp
+            debugger/graphics_framebuffer.cpp
             debugger/ramview.cpp
             debugger/registers.cpp
+            util/spinbox.cpp
             bootmanager.cpp
             hotkeys.cpp
             main.cpp
@@ -23,9 +26,13 @@ set(HEADERS
             debugger/callstack.hxx
             debugger/disassembler.hxx
             debugger/graphics.hxx
+            debugger/graphics_breakpoints.hxx
+            debugger/graphics_breakpoints_p.hxx
             debugger/graphics_cmdlists.hxx
+            debugger/graphics_framebuffer.hxx
             debugger/ramview.hxx
             debugger/registers.hxx
+            util/spinbox.hxx
             bootmanager.hxx
             hotkeys.hxx
             main.hxx
diff --git a/src/citra_qt/bootmanager.cpp b/src/citra_qt/bootmanager.cpp
index 9bf079919..b53206be6 100644
--- a/src/citra_qt/bootmanager.cpp
+++ b/src/citra_qt/bootmanager.cpp
@@ -14,6 +14,8 @@
 #include "core/core.h"
 #include "core/settings.h"
 
+#include "video_core/debug_utils/debug_utils.h"
+
 #include "video_core/video_core.h"
 
 #include "citra_qt/version.h"
@@ -65,14 +67,21 @@ void EmuThread::Stop()
     }
     stop_run = true;
 
+    // Release emu threads from any breakpoints, so that this doesn't hang forever.
+    Pica::g_debug_context->ClearBreakpoints();
+
     //core::g_state = core::SYS_DIE;
 
-    wait(500);
+    // TODO: Waiting here is just a bad workaround for retarded shutdown logic.
+    wait(1000);
     if (isRunning())
     {
         WARN_LOG(MASTER_LOG, "EmuThread still running, terminating...");
         quit();
-        wait(1000);
+
+        // TODO: Waiting 50 seconds can be necessary if the logging subsystem has a lot of spam
+        // queued... This should be fixed.
+        wait(50000);
         if (isRunning())
         {
             WARN_LOG(MASTER_LOG, "EmuThread STILL running, something is wrong here...");
@@ -230,7 +239,7 @@ QByteArray GRenderWindow::saveGeometry()
 {
     // If we are a top-level widget, store the current geometry
     // otherwise, store the last backup
-    if (parent() == NULL)
+    if (parent() == nullptr)
         return ((QGLWidget*)this)->saveGeometry();
     else
         return geometry;
diff --git a/src/citra_qt/debugger/graphics_breakpoints.cpp b/src/citra_qt/debugger/graphics_breakpoints.cpp
new file mode 100644
index 000000000..df5579e15
--- /dev/null
+++ b/src/citra_qt/debugger/graphics_breakpoints.cpp
@@ -0,0 +1,261 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <QMetaType>
+#include <QPushButton>
+#include <QTreeWidget>
+#include <QVBoxLayout>
+#include <QLabel>
+
+#include "graphics_breakpoints.hxx"
+#include "graphics_breakpoints_p.hxx"
+
+BreakPointModel::BreakPointModel(std::shared_ptr<Pica::DebugContext> debug_context, QObject* parent)
+    : QAbstractListModel(parent), context_weak(debug_context),
+      at_breakpoint(debug_context->at_breakpoint),
+      active_breakpoint(debug_context->active_breakpoint)
+{
+
+}
+
+int BreakPointModel::columnCount(const QModelIndex& parent) const
+{
+    return 2;
+}
+
+int BreakPointModel::rowCount(const QModelIndex& parent) const
+{
+    return static_cast<int>(Pica::DebugContext::Event::NumEvents);
+}
+
+QVariant BreakPointModel::data(const QModelIndex& index, int role) const
+{
+    const auto event = static_cast<Pica::DebugContext::Event>(index.row());
+
+    switch (role) {
+    case Qt::DisplayRole:
+    {
+        switch (index.column()) {
+        case 0:
+        {
+            std::map<Pica::DebugContext::Event, QString> map;
+            map.insert({Pica::DebugContext::Event::CommandLoaded, tr("Pica command loaded")});
+            map.insert({Pica::DebugContext::Event::CommandProcessed, tr("Pica command processed")});
+            map.insert({Pica::DebugContext::Event::IncomingPrimitiveBatch, tr("Incoming primitive batch")});
+            map.insert({Pica::DebugContext::Event::FinishedPrimitiveBatch, tr("Finished primitive batch")});
+
+            _dbg_assert_(GUI, map.size() == static_cast<size_t>(Pica::DebugContext::Event::NumEvents));
+
+            return map[event];
+        }
+
+        case 1:
+            return data(index, Role_IsEnabled).toBool() ? tr("Enabled") : tr("Disabled");
+
+        default:
+            break;
+        }
+
+        break;
+    }
+
+    case Qt::BackgroundRole:
+    {
+        if (at_breakpoint && index.row() == static_cast<int>(active_breakpoint)) {
+            return QBrush(QColor(0xE0, 0xE0, 0x10));
+        }
+        break;
+    }
+
+    case Role_IsEnabled:
+    {
+        auto context = context_weak.lock();
+        return context && context->breakpoints[event].enabled;
+    }
+
+    default:
+        break;
+    }
+    return QVariant();
+}
+
+QVariant BreakPointModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    switch(role) {
+    case Qt::DisplayRole:
+    {
+        if (section == 0) {
+            return tr("Event");
+        } else if (section == 1) {
+            return tr("Status");
+        }
+
+        break;
+    }
+    }
+
+    return QVariant();
+}
+
+bool BreakPointModel::setData(const QModelIndex& index, const QVariant& value, int role)
+{
+    const auto event = static_cast<Pica::DebugContext::Event>(index.row());
+
+    switch (role) {
+    case Role_IsEnabled:
+    {
+        auto context = context_weak.lock();
+        if (!context)
+            return false;
+
+        context->breakpoints[event].enabled = value.toBool();
+        QModelIndex changed_index = createIndex(index.row(), 1);
+        emit dataChanged(changed_index, changed_index);
+        return true;
+    }
+    }
+
+    return false;
+}
+
+
+void BreakPointModel::OnBreakPointHit(Pica::DebugContext::Event event)
+{
+    auto context = context_weak.lock();
+    if (!context)
+        return;
+
+    active_breakpoint = context->active_breakpoint;
+    at_breakpoint = context->at_breakpoint;
+    emit dataChanged(createIndex(static_cast<int>(event), 0),
+                     createIndex(static_cast<int>(event), 1));
+}
+
+void BreakPointModel::OnResumed()
+{
+    auto context = context_weak.lock();
+    if (!context)
+        return;
+
+    at_breakpoint = context->at_breakpoint;
+    emit dataChanged(createIndex(static_cast<int>(active_breakpoint), 0),
+                     createIndex(static_cast<int>(active_breakpoint), 1));
+    active_breakpoint = context->active_breakpoint;
+}
+
+
+GraphicsBreakPointsWidget::GraphicsBreakPointsWidget(std::shared_ptr<Pica::DebugContext> debug_context,
+                                                     QWidget* parent)
+    : QDockWidget(tr("Pica Breakpoints"), parent),
+      Pica::DebugContext::BreakPointObserver(debug_context)
+{
+    setObjectName("PicaBreakPointsWidget");
+
+    status_text = new QLabel(tr("Emulation running"));
+    resume_button = new QPushButton(tr("Resume"));
+    resume_button->setEnabled(false);
+
+    breakpoint_model = new BreakPointModel(debug_context, this);
+    breakpoint_list = new QTreeView;
+    breakpoint_list->setModel(breakpoint_model);
+
+    toggle_breakpoint_button = new QPushButton(tr("Enable"));
+    toggle_breakpoint_button->setEnabled(false);
+
+    qRegisterMetaType<Pica::DebugContext::Event>("Pica::DebugContext::Event");
+
+    connect(resume_button, SIGNAL(clicked()), this, SLOT(OnResumeRequested()));
+
+    connect(this, SIGNAL(BreakPointHit(Pica::DebugContext::Event,void*)),
+            this, SLOT(OnBreakPointHit(Pica::DebugContext::Event,void*)),
+            Qt::BlockingQueuedConnection);
+    connect(this, SIGNAL(Resumed()), this, SLOT(OnResumed()));
+
+    connect(this, SIGNAL(BreakPointHit(Pica::DebugContext::Event,void*)),
+            breakpoint_model, SLOT(OnBreakPointHit(Pica::DebugContext::Event)),
+            Qt::BlockingQueuedConnection);
+    connect(this, SIGNAL(Resumed()), breakpoint_model, SLOT(OnResumed()));
+
+    connect(this, SIGNAL(BreakPointsChanged(const QModelIndex&,const QModelIndex&)),
+            breakpoint_model, SIGNAL(dataChanged(const QModelIndex&,const QModelIndex&)));
+
+    connect(breakpoint_list->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)),
+            this, SLOT(OnBreakpointSelectionChanged(QModelIndex)));
+
+    connect(toggle_breakpoint_button, SIGNAL(clicked()), this, SLOT(OnToggleBreakpointEnabled()));
+
+    QWidget* main_widget = new QWidget;
+    auto main_layout = new QVBoxLayout;
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(status_text);
+        sub_layout->addWidget(resume_button);
+        main_layout->addLayout(sub_layout);
+    }
+    main_layout->addWidget(breakpoint_list);
+    main_layout->addWidget(toggle_breakpoint_button);
+    main_widget->setLayout(main_layout);
+
+    setWidget(main_widget);
+}
+
+void GraphicsBreakPointsWidget::OnPicaBreakPointHit(Event event, void* data)
+{
+    // Process in GUI thread
+    emit BreakPointHit(event, data);
+}
+
+void GraphicsBreakPointsWidget::OnBreakPointHit(Pica::DebugContext::Event event, void* data)
+{
+    status_text->setText(tr("Emulation halted at breakpoint"));
+    resume_button->setEnabled(true);
+}
+
+void GraphicsBreakPointsWidget::OnPicaResume()
+{
+    // Process in GUI thread
+    emit Resumed();
+}
+
+void GraphicsBreakPointsWidget::OnResumed()
+{
+    status_text->setText(tr("Emulation running"));
+    resume_button->setEnabled(false);
+}
+
+void GraphicsBreakPointsWidget::OnResumeRequested()
+{
+    if (auto context = context_weak.lock())
+        context->Resume();
+}
+
+void GraphicsBreakPointsWidget::OnBreakpointSelectionChanged(const QModelIndex& index)
+{
+    if (!index.isValid()) {
+        toggle_breakpoint_button->setEnabled(false);
+        return;
+    }
+
+    toggle_breakpoint_button->setEnabled(true);
+    UpdateToggleBreakpointButton(index);
+}
+
+void GraphicsBreakPointsWidget::OnToggleBreakpointEnabled()
+{
+    QModelIndex index = breakpoint_list->selectionModel()->currentIndex();
+    bool new_state = !(breakpoint_model->data(index, BreakPointModel::Role_IsEnabled).toBool());
+
+    breakpoint_model->setData(index, new_state,
+                              BreakPointModel::Role_IsEnabled);
+    UpdateToggleBreakpointButton(index);
+}
+
+void GraphicsBreakPointsWidget::UpdateToggleBreakpointButton(const QModelIndex& index)
+{
+    if (true == breakpoint_model->data(index, BreakPointModel::Role_IsEnabled).toBool()) {
+        toggle_breakpoint_button->setText(tr("Disable"));
+    } else {
+        toggle_breakpoint_button->setText(tr("Enable"));
+    }
+}
diff --git a/src/citra_qt/debugger/graphics_breakpoints.hxx b/src/citra_qt/debugger/graphics_breakpoints.hxx
new file mode 100644
index 000000000..2142c6fa1
--- /dev/null
+++ b/src/citra_qt/debugger/graphics_breakpoints.hxx
@@ -0,0 +1,53 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+
+#include <QAbstractListModel>
+#include <QDockWidget>
+
+#include "video_core/debug_utils/debug_utils.h"
+
+class QLabel;
+class QPushButton;
+class QTreeView;
+
+class BreakPointModel;
+
+class GraphicsBreakPointsWidget : public QDockWidget, Pica::DebugContext::BreakPointObserver {
+    Q_OBJECT
+
+    using Event = Pica::DebugContext::Event;
+
+public:
+    GraphicsBreakPointsWidget(std::shared_ptr<Pica::DebugContext> debug_context,
+                              QWidget* parent = nullptr);
+
+    void OnPicaBreakPointHit(Pica::DebugContext::Event event, void* data) override;
+    void OnPicaResume() override;
+
+public slots:
+    void OnBreakPointHit(Pica::DebugContext::Event event, void* data);
+    void OnResumeRequested();
+    void OnResumed();
+    void OnBreakpointSelectionChanged(const QModelIndex&);
+    void OnToggleBreakpointEnabled();
+
+signals:
+    void Resumed();
+    void BreakPointHit(Pica::DebugContext::Event event, void* data);
+    void BreakPointsChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight);
+
+private:
+    void UpdateToggleBreakpointButton(const QModelIndex& index);
+
+    QLabel* status_text;
+    QPushButton* resume_button;
+    QPushButton* toggle_breakpoint_button;
+
+    BreakPointModel* breakpoint_model;
+    QTreeView* breakpoint_list;
+};
diff --git a/src/citra_qt/debugger/graphics_breakpoints_p.hxx b/src/citra_qt/debugger/graphics_breakpoints_p.hxx
new file mode 100644
index 000000000..bf5daf73d
--- /dev/null
+++ b/src/citra_qt/debugger/graphics_breakpoints_p.hxx
@@ -0,0 +1,38 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+
+#include <QAbstractListModel>
+
+#include "video_core/debug_utils/debug_utils.h"
+
+class BreakPointModel : public QAbstractListModel {
+    Q_OBJECT
+
+public:
+    enum {
+        Role_IsEnabled = Qt::UserRole,
+    };
+
+    BreakPointModel(std::shared_ptr<Pica::DebugContext> context, QObject* parent);
+
+    int columnCount(const QModelIndex& parent = QModelIndex()) const override;
+    int rowCount(const QModelIndex& parent = QModelIndex()) const override;
+    QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
+
+    bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole);
+
+public slots:
+    void OnBreakPointHit(Pica::DebugContext::Event event);
+    void OnResumed();
+
+private:
+    std::weak_ptr<Pica::DebugContext> context_weak;
+    bool at_breakpoint;
+    Pica::DebugContext::Event active_breakpoint;
+};
diff --git a/src/citra_qt/debugger/graphics_cmdlists.cpp b/src/citra_qt/debugger/graphics_cmdlists.cpp
index 71dd166cd..7f97cf143 100644
--- a/src/citra_qt/debugger/graphics_cmdlists.cpp
+++ b/src/citra_qt/debugger/graphics_cmdlists.cpp
@@ -2,30 +2,171 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
+#include <QLabel>
 #include <QListView>
+#include <QMainWindow>
 #include <QPushButton>
 #include <QVBoxLayout>
 #include <QTreeView>
+#include <QSpinBox>
+#include <QComboBox>
+
+#include "video_core/pica.h"
+#include "video_core/math.h"
+
+#include "video_core/debug_utils/debug_utils.h"
 
 #include "graphics_cmdlists.hxx"
 
-GPUCommandListModel::GPUCommandListModel(QObject* parent) : QAbstractListModel(parent)
-{
+#include "util/spinbox.hxx"
+
+QImage LoadTexture(u8* src, const Pica::DebugUtils::TextureInfo& info) {
+    QImage decoded_image(info.width, info.height, QImage::Format_ARGB32);
+    for (int y = 0; y < info.height; ++y) {
+        for (int x = 0; x < info.width; ++x) {
+            Math::Vec4<u8> color = Pica::DebugUtils::LookupTexture(src, x, y, info);
+            decoded_image.setPixel(x, y, qRgba(color.r(), color.g(), color.b(), color.a()));
+        }
+    }
+
+    return decoded_image;
+}
+
+class TextureInfoWidget : public QWidget {
+public:
+    TextureInfoWidget(u8* src, const Pica::DebugUtils::TextureInfo& info, QWidget* parent = nullptr) : QWidget(parent) {
+        QLabel* image_widget = new QLabel;
+        QPixmap image_pixmap = QPixmap::fromImage(LoadTexture(src, info));
+        image_pixmap = image_pixmap.scaled(200, 100, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+        image_widget->setPixmap(image_pixmap);
+
+        QVBoxLayout* layout = new QVBoxLayout;
+        layout->addWidget(image_widget);
+        setLayout(layout);
+    }
+};
+
+TextureInfoDockWidget::TextureInfoDockWidget(const Pica::DebugUtils::TextureInfo& info, QWidget* parent)
+    : QDockWidget(tr("Texture 0x%1").arg(info.address, 8, 16, QLatin1Char('0'))),
+      info(info) {
+
+    QWidget* main_widget = new QWidget;
+
+    QLabel* image_widget = new QLabel;
+
+    connect(this, SIGNAL(UpdatePixmap(const QPixmap&)), image_widget, SLOT(setPixmap(const QPixmap&)));
+
+    CSpinBox* phys_address_spinbox = new CSpinBox;
+    phys_address_spinbox->SetBase(16);
+    phys_address_spinbox->SetRange(0, 0xFFFFFFFF);
+    phys_address_spinbox->SetPrefix("0x");
+    phys_address_spinbox->SetValue(info.address);
+    connect(phys_address_spinbox, SIGNAL(ValueChanged(qint64)), this, SLOT(OnAddressChanged(qint64)));
+
+    QComboBox* format_choice = new QComboBox;
+    format_choice->addItem(tr("RGBA8"));
+    format_choice->addItem(tr("RGB8"));
+    format_choice->addItem(tr("RGBA5551"));
+    format_choice->addItem(tr("RGB565"));
+    format_choice->addItem(tr("RGBA4"));
+    format_choice->setCurrentIndex(static_cast<int>(info.format));
+    connect(format_choice, SIGNAL(currentIndexChanged(int)), this, SLOT(OnFormatChanged(int)));
+
+    QSpinBox* width_spinbox = new QSpinBox;
+    width_spinbox->setMaximum(65535);
+    width_spinbox->setValue(info.width);
+    connect(width_spinbox, SIGNAL(valueChanged(int)), this, SLOT(OnWidthChanged(int)));
+
+    QSpinBox* height_spinbox = new QSpinBox;
+    height_spinbox->setMaximum(65535);
+    height_spinbox->setValue(info.height);
+    connect(height_spinbox, SIGNAL(valueChanged(int)), this, SLOT(OnHeightChanged(int)));
+
+    QSpinBox* stride_spinbox = new QSpinBox;
+    stride_spinbox->setMaximum(65535 * 4);
+    stride_spinbox->setValue(info.stride);
+    connect(stride_spinbox, SIGNAL(valueChanged(int)), this, SLOT(OnStrideChanged(int)));
+
+    QVBoxLayout* main_layout = new QVBoxLayout;
+    main_layout->addWidget(image_widget);
+
+    {
+        QHBoxLayout* sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Source Address:")));
+        sub_layout->addWidget(phys_address_spinbox);
+        main_layout->addLayout(sub_layout);
+    }
+
+    {
+        QHBoxLayout* sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Format")));
+        sub_layout->addWidget(format_choice);
+        main_layout->addLayout(sub_layout);
+    }
+
+    {
+        QHBoxLayout* sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Width:")));
+        sub_layout->addWidget(width_spinbox);
+        sub_layout->addStretch();
+        sub_layout->addWidget(new QLabel(tr("Height:")));
+        sub_layout->addWidget(height_spinbox);
+        sub_layout->addStretch();
+        sub_layout->addWidget(new QLabel(tr("Stride:")));
+        sub_layout->addWidget(stride_spinbox);
+        main_layout->addLayout(sub_layout);
+    }
+
+    main_widget->setLayout(main_layout);
+
+    emit UpdatePixmap(ReloadPixmap());
+
+    setWidget(main_widget);
+}
+
+void TextureInfoDockWidget::OnAddressChanged(qint64 value) {
+    info.address = value;
+    emit UpdatePixmap(ReloadPixmap());
+}
+
+void TextureInfoDockWidget::OnFormatChanged(int value) {
+    info.format = static_cast<Pica::Regs::TextureFormat>(value);
+    emit UpdatePixmap(ReloadPixmap());
+}
+
+void TextureInfoDockWidget::OnWidthChanged(int value) {
+    info.width = value;
+    emit UpdatePixmap(ReloadPixmap());
+}
+
+void TextureInfoDockWidget::OnHeightChanged(int value) {
+    info.height = value;
+    emit UpdatePixmap(ReloadPixmap());
+}
 
+void TextureInfoDockWidget::OnStrideChanged(int value) {
+    info.stride = value;
+    emit UpdatePixmap(ReloadPixmap());
 }
 
-int GPUCommandListModel::rowCount(const QModelIndex& parent) const
-{
+QPixmap TextureInfoDockWidget::ReloadPixmap() const {
+    u8* src = Memory::GetPointer(info.address);
+    return QPixmap::fromImage(LoadTexture(src, info));
+}
+
+GPUCommandListModel::GPUCommandListModel(QObject* parent) : QAbstractListModel(parent) {
+
+}
+
+int GPUCommandListModel::rowCount(const QModelIndex& parent) const {
     return pica_trace.writes.size();
 }
 
-int GPUCommandListModel::columnCount(const QModelIndex& parent) const
-{
+int GPUCommandListModel::columnCount(const QModelIndex& parent) const {
     return 2;
 }
 
-QVariant GPUCommandListModel::data(const QModelIndex& index, int role) const
-{
+QVariant GPUCommandListModel::data(const QModelIndex& index, int role) const {
     if (!index.isValid())
         return QVariant();
 
@@ -36,21 +177,39 @@ QVariant GPUCommandListModel::data(const QModelIndex& index, int role) const
     if (role == Qt::DisplayRole) {
         QString content;
         if (index.column() == 0) {
-            content = QString::fromLatin1(Pica::Regs::GetCommandName(cmd.cmd_id).c_str());
+            QString content = QString::fromLatin1(Pica::Regs::GetCommandName(cmd.cmd_id).c_str());
             content.append(" ");
+            return content;
         } else if (index.column() == 1) {
-            content.append(QString("%1 ").arg(cmd.hex, 8, 16, QLatin1Char('0')));
+            QString content = QString("%1 ").arg(cmd.hex, 8, 16, QLatin1Char('0'));
             content.append(QString("%1 ").arg(val, 8, 16, QLatin1Char('0')));
+            return content;
         }
+    } else if (role == CommandIdRole) {
+        return QVariant::fromValue<int>(cmd.cmd_id.Value());
+    }
 
-        return QVariant(content);
+    return QVariant();
+}
+
+QVariant GPUCommandListModel::headerData(int section, Qt::Orientation orientation, int role) const {
+    switch(role) {
+    case Qt::DisplayRole:
+    {
+        if (section == 0) {
+            return tr("Command Name");
+        } else if (section == 1) {
+            return tr("Data");
+        }
+
+        break;
+    }
     }
 
     return QVariant();
 }
 
-void GPUCommandListModel::OnPicaTraceFinished(const Pica::DebugUtils::PicaTrace& trace)
-{
+void GPUCommandListModel::OnPicaTraceFinished(const Pica::DebugUtils::PicaTrace& trace) {
     beginResetModel();
 
     pica_trace = trace;
@@ -58,38 +217,82 @@ void GPUCommandListModel::OnPicaTraceFinished(const Pica::DebugUtils::PicaTrace&
     endResetModel();
 }
 
+#define COMMAND_IN_RANGE(cmd_id, reg_name)   \
+    (cmd_id >= PICA_REG_INDEX(reg_name) &&   \
+     cmd_id < PICA_REG_INDEX(reg_name) + sizeof(decltype(Pica::registers.reg_name)) / 4)
+
+void GPUCommandListWidget::OnCommandDoubleClicked(const QModelIndex& index) {
+    const int command_id = list_widget->model()->data(index, GPUCommandListModel::CommandIdRole).toInt();
+    if (COMMAND_IN_RANGE(command_id, texture0)) {
+        auto info = Pica::DebugUtils::TextureInfo::FromPicaRegister(Pica::registers.texture0,
+                                                                    Pica::registers.texture0_format);
+
+        // TODO: Instead, emit a signal here to be caught by the main window widget.
+        auto main_window = static_cast<QMainWindow*>(parent());
+        main_window->tabifyDockWidget(this, new TextureInfoDockWidget(info, main_window));
+    }
+}
+
+void GPUCommandListWidget::SetCommandInfo(const QModelIndex& index) {
+    QWidget* new_info_widget;
+
+    const int command_id = list_widget->model()->data(index, GPUCommandListModel::CommandIdRole).toInt();
+    if (COMMAND_IN_RANGE(command_id, texture0)) {
+        u8* src = Memory::GetPointer(Pica::registers.texture0.GetPhysicalAddress());
+        auto info = Pica::DebugUtils::TextureInfo::FromPicaRegister(Pica::registers.texture0,
+                                                                    Pica::registers.texture0_format);
+        new_info_widget = new TextureInfoWidget(src, info);
+    } else {
+        new_info_widget = new QWidget;
+    }
+
+    widget()->layout()->removeWidget(command_info_widget);
+    delete command_info_widget;
+    widget()->layout()->addWidget(new_info_widget);
+    command_info_widget = new_info_widget;
+}
+#undef COMMAND_IN_RANGE
 
-GPUCommandListWidget::GPUCommandListWidget(QWidget* parent) : QDockWidget(tr("Pica Command List"), parent)
-{
+GPUCommandListWidget::GPUCommandListWidget(QWidget* parent) : QDockWidget(tr("Pica Command List"), parent) {
+    setObjectName("Pica Command List");
     GPUCommandListModel* model = new GPUCommandListModel(this);
 
     QWidget* main_widget = new QWidget;
 
-    QTreeView* list_widget = new QTreeView;
+    list_widget = new QTreeView;
     list_widget->setModel(model);
     list_widget->setFont(QFont("monospace"));
     list_widget->setRootIsDecorated(false);
 
-    QPushButton* toggle_tracing = new QPushButton(tr("Start Tracing"));
+    connect(list_widget->selectionModel(), SIGNAL(currentChanged(const QModelIndex&,const QModelIndex&)),
+            this, SLOT(SetCommandInfo(const QModelIndex&)));
+    connect(list_widget, SIGNAL(doubleClicked(const QModelIndex&)),
+            this, SLOT(OnCommandDoubleClicked(const QModelIndex&)));
+
+    toggle_tracing = new QPushButton(tr("Start Tracing"));
 
     connect(toggle_tracing, SIGNAL(clicked()), this, SLOT(OnToggleTracing()));
     connect(this, SIGNAL(TracingFinished(const Pica::DebugUtils::PicaTrace&)),
             model, SLOT(OnPicaTraceFinished(const Pica::DebugUtils::PicaTrace&)));
 
+    command_info_widget = new QWidget;
+
     QVBoxLayout* main_layout = new QVBoxLayout;
     main_layout->addWidget(list_widget);
     main_layout->addWidget(toggle_tracing);
+    main_layout->addWidget(command_info_widget);
     main_widget->setLayout(main_layout);
 
     setWidget(main_widget);
 }
 
-void GPUCommandListWidget::OnToggleTracing()
-{
+void GPUCommandListWidget::OnToggleTracing() {
     if (!Pica::DebugUtils::IsPicaTracing()) {
         Pica::DebugUtils::StartPicaTracing();
+        toggle_tracing->setText(tr("Finish Tracing"));
     } else {
         pica_trace = Pica::DebugUtils::FinishPicaTracing();
         emit TracingFinished(*pica_trace);
+        toggle_tracing->setText(tr("Start Tracing"));
     }
 }
diff --git a/src/citra_qt/debugger/graphics_cmdlists.hxx b/src/citra_qt/debugger/graphics_cmdlists.hxx
index 1523e724f..a459bba64 100644
--- a/src/citra_qt/debugger/graphics_cmdlists.hxx
+++ b/src/citra_qt/debugger/graphics_cmdlists.hxx
@@ -10,16 +10,24 @@
 #include "video_core/gpu_debugger.h"
 #include "video_core/debug_utils/debug_utils.h"
 
+class QPushButton;
+class QTreeView;
+
 class GPUCommandListModel : public QAbstractListModel
 {
     Q_OBJECT
 
 public:
+    enum {
+        CommandIdRole = Qt::UserRole,
+    };
+
     GPUCommandListModel(QObject* parent);
 
     int columnCount(const QModelIndex& parent = QModelIndex()) const override;
     int rowCount(const QModelIndex& parent = QModelIndex()) const override;
     QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
 
 public slots:
     void OnPicaTraceFinished(const Pica::DebugUtils::PicaTrace& trace);
@@ -37,10 +45,39 @@ public:
 
 public slots:
     void OnToggleTracing();
+    void OnCommandDoubleClicked(const QModelIndex&);
+
+    void SetCommandInfo(const QModelIndex&);
 
 signals:
     void TracingFinished(const Pica::DebugUtils::PicaTrace&);
 
 private:
     std::unique_ptr<Pica::DebugUtils::PicaTrace> pica_trace;
+
+    QTreeView* list_widget;
+    QWidget* command_info_widget;
+    QPushButton* toggle_tracing;
+};
+
+class TextureInfoDockWidget : public QDockWidget {
+    Q_OBJECT
+
+public:
+    TextureInfoDockWidget(const Pica::DebugUtils::TextureInfo& info, QWidget* parent = nullptr);
+
+signals:
+    void UpdatePixmap(const QPixmap& pixmap);
+
+private slots:
+    void OnAddressChanged(qint64 value);
+    void OnFormatChanged(int value);
+    void OnWidthChanged(int value);
+    void OnHeightChanged(int value);
+    void OnStrideChanged(int value);
+
+private:
+    QPixmap ReloadPixmap() const;
+
+    Pica::DebugUtils::TextureInfo info;
 };
diff --git a/src/citra_qt/debugger/graphics_framebuffer.cpp b/src/citra_qt/debugger/graphics_framebuffer.cpp
new file mode 100644
index 000000000..ac47f298d
--- /dev/null
+++ b/src/citra_qt/debugger/graphics_framebuffer.cpp
@@ -0,0 +1,282 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <QBoxLayout>
+#include <QComboBox>
+#include <QDebug>
+#include <QLabel>
+#include <QMetaType>
+#include <QPushButton>
+#include <QSpinBox>
+
+#include "video_core/pica.h"
+
+#include "graphics_framebuffer.hxx"
+
+#include "util/spinbox.hxx"
+
+BreakPointObserverDock::BreakPointObserverDock(std::shared_ptr<Pica::DebugContext> debug_context,
+                                               const QString& title, QWidget* parent)
+    : QDockWidget(title, parent), BreakPointObserver(debug_context)
+{
+    qRegisterMetaType<Pica::DebugContext::Event>("Pica::DebugContext::Event");
+
+    connect(this, SIGNAL(Resumed()), this, SLOT(OnResumed()));
+
+    // NOTE: This signal is emitted from a non-GUI thread, but connect() takes
+    //       care of delaying its handling to the GUI thread.
+    connect(this, SIGNAL(BreakPointHit(Pica::DebugContext::Event,void*)),
+            this, SLOT(OnBreakPointHit(Pica::DebugContext::Event,void*)),
+            Qt::BlockingQueuedConnection);
+}
+
+void BreakPointObserverDock::OnPicaBreakPointHit(Pica::DebugContext::Event event, void* data)
+{
+    emit BreakPointHit(event, data);
+}
+
+void BreakPointObserverDock::OnPicaResume()
+{
+    emit Resumed();
+}
+
+
+GraphicsFramebufferWidget::GraphicsFramebufferWidget(std::shared_ptr<Pica::DebugContext> debug_context,
+                                                     QWidget* parent)
+    : BreakPointObserverDock(debug_context, tr("Pica Framebuffer"), parent),
+      framebuffer_source(Source::PicaTarget)
+{
+    setObjectName("PicaFramebuffer");
+
+    framebuffer_source_list = new QComboBox;
+    framebuffer_source_list->addItem(tr("Active Render Target"));
+    framebuffer_source_list->addItem(tr("Custom"));
+    framebuffer_source_list->setCurrentIndex(static_cast<int>(framebuffer_source));
+
+    framebuffer_address_control = new CSpinBox;
+    framebuffer_address_control->SetBase(16);
+    framebuffer_address_control->SetRange(0, 0xFFFFFFFF);
+    framebuffer_address_control->SetPrefix("0x");
+
+    framebuffer_width_control = new QSpinBox;
+    framebuffer_width_control->setMinimum(1);
+    framebuffer_width_control->setMaximum(std::numeric_limits<int>::max()); // TODO: Find actual maximum
+
+    framebuffer_height_control = new QSpinBox;
+    framebuffer_height_control->setMinimum(1);
+    framebuffer_height_control->setMaximum(std::numeric_limits<int>::max()); // TODO: Find actual maximum
+
+    framebuffer_format_control = new QComboBox;
+    framebuffer_format_control->addItem(tr("RGBA8"));
+    framebuffer_format_control->addItem(tr("RGB8"));
+    framebuffer_format_control->addItem(tr("RGBA5551"));
+    framebuffer_format_control->addItem(tr("RGB565"));
+    framebuffer_format_control->addItem(tr("RGBA4"));
+
+    // TODO: This QLabel should shrink the image to the available space rather than just expanding...
+    framebuffer_picture_label = new QLabel;
+
+    auto enlarge_button = new QPushButton(tr("Enlarge"));
+
+    // Connections
+    connect(this, SIGNAL(Update()), this, SLOT(OnUpdate()));
+    connect(framebuffer_source_list, SIGNAL(currentIndexChanged(int)), this, SLOT(OnFramebufferSourceChanged(int)));
+    connect(framebuffer_address_control, SIGNAL(ValueChanged(qint64)), this, SLOT(OnFramebufferAddressChanged(qint64)));
+    connect(framebuffer_width_control, SIGNAL(valueChanged(int)), this, SLOT(OnFramebufferWidthChanged(int)));
+    connect(framebuffer_height_control, SIGNAL(valueChanged(int)), this, SLOT(OnFramebufferHeightChanged(int)));
+    connect(framebuffer_format_control, SIGNAL(currentIndexChanged(int)), this, SLOT(OnFramebufferFormatChanged(int)));
+
+    auto main_widget = new QWidget;
+    auto main_layout = new QVBoxLayout;
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Source:")));
+        sub_layout->addWidget(framebuffer_source_list);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Virtual Address:")));
+        sub_layout->addWidget(framebuffer_address_control);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Width:")));
+        sub_layout->addWidget(framebuffer_width_control);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Height:")));
+        sub_layout->addWidget(framebuffer_height_control);
+        main_layout->addLayout(sub_layout);
+    }
+    {
+        auto sub_layout = new QHBoxLayout;
+        sub_layout->addWidget(new QLabel(tr("Format:")));
+        sub_layout->addWidget(framebuffer_format_control);
+        main_layout->addLayout(sub_layout);
+    }
+    main_layout->addWidget(framebuffer_picture_label);
+    main_layout->addWidget(enlarge_button);
+    main_widget->setLayout(main_layout);
+    setWidget(main_widget);
+
+    // Load current data - TODO: Make sure this works when emulation is not running
+    emit Update();
+    widget()->setEnabled(false); // TODO: Only enable if currently at breakpoint
+}
+
+void GraphicsFramebufferWidget::OnBreakPointHit(Pica::DebugContext::Event event, void* data)
+{
+    emit Update();
+    widget()->setEnabled(true);
+}
+
+void GraphicsFramebufferWidget::OnResumed()
+{
+    widget()->setEnabled(false);
+}
+
+void GraphicsFramebufferWidget::OnFramebufferSourceChanged(int new_value)
+{
+    framebuffer_source = static_cast<Source>(new_value);
+    emit Update();
+}
+
+void GraphicsFramebufferWidget::OnFramebufferAddressChanged(qint64 new_value)
+{
+    if (framebuffer_address != new_value) {
+        framebuffer_address = static_cast<unsigned>(new_value);
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnFramebufferWidthChanged(int new_value)
+{
+    if (framebuffer_width != new_value) {
+        framebuffer_width = new_value;
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnFramebufferHeightChanged(int new_value)
+{
+    if (framebuffer_height != new_value) {
+        framebuffer_height = new_value;
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnFramebufferFormatChanged(int new_value)
+{
+    if (framebuffer_format != static_cast<Format>(new_value)) {
+        framebuffer_format = static_cast<Format>(new_value);
+
+        framebuffer_source_list->setCurrentIndex(static_cast<int>(Source::Custom));
+        emit Update();
+    }
+}
+
+void GraphicsFramebufferWidget::OnUpdate()
+{
+    QPixmap pixmap;
+
+    switch (framebuffer_source) {
+    case Source::PicaTarget:
+    {
+        // TODO: Store a reference to the registers in the debug context instead of accessing them directly...
+
+        auto framebuffer = Pica::registers.framebuffer;
+        using Framebuffer = decltype(framebuffer);
+
+        framebuffer_address = framebuffer.GetColorBufferAddress();
+        framebuffer_width = framebuffer.GetWidth();
+        framebuffer_height = framebuffer.GetHeight();
+        framebuffer_format = static_cast<Format>(framebuffer.color_format);
+
+        break;
+    }
+
+    case Source::Custom:
+    {
+        // Keep user-specified values
+        break;
+    }
+
+    default:
+        qDebug() << "Unknown framebuffer source " << static_cast<int>(framebuffer_source);
+        break;
+    }
+
+    // TODO: Implement a good way to visualize alpha components!
+    // TODO: Unify this decoding code with the texture decoder
+    switch (framebuffer_format) {
+    case Format::RGBA8:
+    {
+        QImage decoded_image(framebuffer_width, framebuffer_height, QImage::Format_ARGB32);
+        u32* color_buffer = (u32*)Memory::GetPointer(framebuffer_address);
+        for (int y = 0; y < framebuffer_height; ++y) {
+            for (int x = 0; x < framebuffer_width; ++x) {
+                u32 value = *(color_buffer + x + y * framebuffer_width);
+
+                decoded_image.setPixel(x, y, qRgba((value >> 16) & 0xFF, (value >> 8) & 0xFF, value & 0xFF, 255/*value >> 24*/));
+            }
+        }
+        pixmap = QPixmap::fromImage(decoded_image);
+        break;
+    }
+
+    case Format::RGB8:
+    {
+        QImage decoded_image(framebuffer_width, framebuffer_height, QImage::Format_ARGB32);
+        u8* color_buffer = Memory::GetPointer(framebuffer_address);
+        for (int y = 0; y < framebuffer_height; ++y) {
+            for (int x = 0; x < framebuffer_width; ++x) {
+                u8* pixel_pointer = color_buffer + x * 3 + y * 3 * framebuffer_width;
+
+                decoded_image.setPixel(x, y, qRgba(pixel_pointer[0], pixel_pointer[1], pixel_pointer[2], 255/*value >> 24*/));
+            }
+        }
+        pixmap = QPixmap::fromImage(decoded_image);
+        break;
+    }
+
+    case Format::RGBA5551:
+    {
+        QImage decoded_image(framebuffer_width, framebuffer_height, QImage::Format_ARGB32);
+        u32* color_buffer = (u32*)Memory::GetPointer(framebuffer_address);
+        for (int y = 0; y < framebuffer_height; ++y) {
+            for (int x = 0; x < framebuffer_width; ++x) {
+                u16 value = *(u16*)(((u8*)color_buffer) + x * 2 + y * framebuffer_width * 2);
+                u8 r = (value >> 11) & 0x1F;
+                u8 g = (value >> 6) & 0x1F;
+                u8 b = (value >> 1) & 0x1F;
+                u8 a = value & 1;
+
+                decoded_image.setPixel(x, y, qRgba(r, g, b, 255/*a*/));
+            }
+        }
+        pixmap = QPixmap::fromImage(decoded_image);
+        break;
+    }
+
+    default:
+        qDebug() << "Unknown fb color format " << static_cast<int>(framebuffer_format);
+        break;
+    }
+
+    framebuffer_address_control->SetValue(framebuffer_address);
+    framebuffer_width_control->setValue(framebuffer_width);
+    framebuffer_height_control->setValue(framebuffer_height);
+    framebuffer_format_control->setCurrentIndex(static_cast<int>(framebuffer_format));
+    framebuffer_picture_label->setPixmap(pixmap);
+}
diff --git a/src/citra_qt/debugger/graphics_framebuffer.hxx b/src/citra_qt/debugger/graphics_framebuffer.hxx
new file mode 100644
index 000000000..1151ee7a1
--- /dev/null
+++ b/src/citra_qt/debugger/graphics_framebuffer.hxx
@@ -0,0 +1,92 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QDockWidget>
+
+#include "video_core/debug_utils/debug_utils.h"
+
+class QComboBox;
+class QLabel;
+class QSpinBox;
+
+class CSpinBox;
+
+// Utility class which forwards calls to OnPicaBreakPointHit and OnPicaResume to public slots.
+// This is because the Pica breakpoint callbacks are called from a non-GUI thread, while
+// the widget usually wants to perform reactions in the GUI thread.
+class BreakPointObserverDock : public QDockWidget, Pica::DebugContext::BreakPointObserver {
+    Q_OBJECT
+
+public:
+    BreakPointObserverDock(std::shared_ptr<Pica::DebugContext> debug_context, const QString& title,
+                           QWidget* parent = nullptr);
+
+    void OnPicaBreakPointHit(Pica::DebugContext::Event event, void* data) override;
+    void OnPicaResume() override;
+
+private slots:
+    virtual void OnBreakPointHit(Pica::DebugContext::Event event, void* data) = 0;
+    virtual void OnResumed() = 0;
+
+signals:
+    void Resumed();
+    void BreakPointHit(Pica::DebugContext::Event event, void* data);
+};
+
+class GraphicsFramebufferWidget : public BreakPointObserverDock {
+    Q_OBJECT
+
+    using Event = Pica::DebugContext::Event;
+
+    enum class Source {
+        PicaTarget = 0,
+        Custom = 1,
+
+        // TODO: Add GPU framebuffer sources!
+    };
+
+    enum class Format {
+        RGBA8    = 0,
+        RGB8     = 1,
+        RGBA5551 = 2,
+        RGB565   = 3,
+        RGBA4    = 4,
+    };
+
+public:
+    GraphicsFramebufferWidget(std::shared_ptr<Pica::DebugContext> debug_context, QWidget* parent = nullptr);
+
+public slots:
+    void OnFramebufferSourceChanged(int new_value);
+    void OnFramebufferAddressChanged(qint64 new_value);
+    void OnFramebufferWidthChanged(int new_value);
+    void OnFramebufferHeightChanged(int new_value);
+    void OnFramebufferFormatChanged(int new_value);
+    void OnUpdate();
+
+private slots:
+    void OnBreakPointHit(Pica::DebugContext::Event event, void* data) override;
+    void OnResumed() override;
+
+signals:
+    void Update();
+
+private:
+
+    QComboBox* framebuffer_source_list;
+    CSpinBox* framebuffer_address_control;
+    QSpinBox* framebuffer_width_control;
+    QSpinBox* framebuffer_height_control;
+    QComboBox* framebuffer_format_control;
+
+    QLabel* framebuffer_picture_label;
+
+    Source framebuffer_source;
+    unsigned framebuffer_address;
+    unsigned framebuffer_width;
+    unsigned framebuffer_height;
+    Format framebuffer_format;
+};
diff --git a/src/citra_qt/hotkeys.cpp b/src/citra_qt/hotkeys.cpp
index bbaa4a8dc..5d0b52e4f 100644
--- a/src/citra_qt/hotkeys.cpp
+++ b/src/citra_qt/hotkeys.cpp
@@ -5,7 +5,7 @@
 
 struct Hotkey
 {
-    Hotkey() : shortcut(NULL), context(Qt::WindowShortcut) {}
+    Hotkey() : shortcut(nullptr), context(Qt::WindowShortcut) {}
 
     QKeySequence keyseq;
     QShortcut* shortcut;
@@ -81,7 +81,7 @@ QShortcut* GetHotkey(const QString& group, const QString& action, QWidget* widge
     Hotkey& hk = hotkey_groups[group][action];
 
     if (!hk.shortcut)
-        hk.shortcut = new QShortcut(hk.keyseq, widget, NULL, NULL, hk.context);
+        hk.shortcut = new QShortcut(hk.keyseq, widget, nullptr, nullptr, hk.context);
 
     return hk.shortcut;
 }
diff --git a/src/citra_qt/main.cpp b/src/citra_qt/main.cpp
index d5554d917..b4e3ad964 100644
--- a/src/citra_qt/main.cpp
+++ b/src/citra_qt/main.cpp
@@ -20,7 +20,9 @@
 #include "debugger/callstack.hxx"
 #include "debugger/ramview.hxx"
 #include "debugger/graphics.hxx"
+#include "debugger/graphics_breakpoints.hxx"
 #include "debugger/graphics_cmdlists.hxx"
+#include "debugger/graphics_framebuffer.hxx"
 
 #include "core/settings.h"
 #include "core/system.h"
@@ -36,6 +38,8 @@ GMainWindow::GMainWindow()
 {
     LogManager::Init();
 
+    Pica::g_debug_context = Pica::DebugContext::Construct();
+
     Config config;
 
     if (!Settings::values.enable_log)
@@ -67,12 +71,22 @@ GMainWindow::GMainWindow()
     addDockWidget(Qt::RightDockWidgetArea, graphicsCommandsWidget);
     graphicsCommandsWidget->hide();
 
+    auto graphicsBreakpointsWidget = new GraphicsBreakPointsWidget(Pica::g_debug_context, this);
+    addDockWidget(Qt::RightDockWidgetArea, graphicsBreakpointsWidget);
+    graphicsBreakpointsWidget->hide();
+
+    auto graphicsFramebufferWidget = new GraphicsFramebufferWidget(Pica::g_debug_context, this);
+    addDockWidget(Qt::RightDockWidgetArea, graphicsFramebufferWidget);
+    graphicsFramebufferWidget->hide();
+
     QMenu* debug_menu = ui.menu_View->addMenu(tr("Debugging"));
     debug_menu->addAction(disasmWidget->toggleViewAction());
     debug_menu->addAction(registersWidget->toggleViewAction());
     debug_menu->addAction(callstackWidget->toggleViewAction());
     debug_menu->addAction(graphicsWidget->toggleViewAction());
     debug_menu->addAction(graphicsCommandsWidget->toggleViewAction());
+    debug_menu->addAction(graphicsBreakpointsWidget->toggleViewAction());
+    debug_menu->addAction(graphicsFramebufferWidget->toggleViewAction());
 
     // Set default UI state
     // geometry: 55% of the window contents are in the upper screen half, 45% in the lower half
@@ -131,8 +145,10 @@ GMainWindow::GMainWindow()
 GMainWindow::~GMainWindow()
 {
     // will get automatically deleted otherwise
-    if (render_window->parent() == NULL)
+    if (render_window->parent() == nullptr)
         delete render_window;
+
+    Pica::g_debug_context.reset();
 }
 
 void GMainWindow::BootGame(std::string filename)
@@ -164,7 +180,7 @@ void GMainWindow::BootGame(std::string filename)
 
 void GMainWindow::OnMenuLoadFile()
 {
-    QString filename = QFileDialog::getOpenFileName(this, tr("Load file"), QString(), tr("3DS executable (*.elf *.axf *.bin *.cci *.cxi)"));
+    QString filename = QFileDialog::getOpenFileName(this, tr("Load file"), QString(), tr("3DS executable (*.3dsx *.elf *.axf *.bin *.cci *.cxi)"));
     if (filename.size())
        BootGame(filename.toLatin1().data());
 }
@@ -213,14 +229,14 @@ void GMainWindow::OnOpenHotkeysDialog()
 void GMainWindow::ToggleWindowMode()
 {
     bool enable = ui.action_Popout_Window_Mode->isChecked();
-    if (enable && render_window->parent() != NULL)
+    if (enable && render_window->parent() != nullptr)
     {
         ui.horizontalLayout->removeWidget(render_window);
-        render_window->setParent(NULL);
+        render_window->setParent(nullptr);
         render_window->setVisible(true);
         render_window->RestoreGeometry();
     }
-    else if (!enable && render_window->parent() == NULL)
+    else if (!enable && render_window->parent() == nullptr)
     {
         render_window->BackupGeometry();
         ui.horizontalLayout->addWidget(render_window);
diff --git a/src/citra_qt/util/spinbox.cpp b/src/citra_qt/util/spinbox.cpp
new file mode 100644
index 000000000..80dc67d7d
--- /dev/null
+++ b/src/citra_qt/util/spinbox.cpp
@@ -0,0 +1,303 @@
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+
+// Copyright 2014 Tony Wasserka
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above copyright
+//       notice, this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//     * Neither the name of the owner nor the names of its contributors may
+//       be used to endorse or promote products derived from this software
+//       without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <QLineEdit>
+#include <QRegExpValidator>
+
+#include "common/log.h"
+
+#include "spinbox.hxx"
+
+CSpinBox::CSpinBox(QWidget* parent) : QAbstractSpinBox(parent), base(10), min_value(-100), max_value(100), value(0), num_digits(0)
+{
+    // TODO: Might be nice to not immediately call the slot.
+    //       Think of an address that is being replaced by a different one, in which case a lot
+    //       invalid intermediate addresses would be read from during editing.
+    connect(lineEdit(), SIGNAL(textEdited(QString)), this, SLOT(OnEditingFinished()));
+
+    UpdateText();
+}
+
+void CSpinBox::SetValue(qint64 val)
+{
+    auto old_value = value;
+    value = std::max(std::min(val, max_value), min_value);
+
+    if (old_value != value) {
+        UpdateText();
+        emit ValueChanged(value);
+    }
+}
+
+void CSpinBox::SetRange(qint64 min, qint64 max)
+{
+    min_value = min;
+    max_value = max;
+
+    SetValue(value);
+    UpdateText();
+}
+
+void CSpinBox::stepBy(int steps)
+{
+    auto new_value = value;
+    // Scale number of steps by the currently selected digit
+    // TODO: Move this code elsewhere and enable it.
+    // TODO: Support for num_digits==0, too
+    // TODO: Support base!=16, too
+    // TODO: Make the cursor not jump back to the end of the line...
+    /*if (base == 16 && num_digits > 0) {
+        int digit = num_digits - (lineEdit()->cursorPosition() - prefix.length()) - 1;
+        digit = std::max(0, std::min(digit, num_digits - 1));
+        steps <<= digit * 4;
+    }*/
+
+    // Increment "new_value" by "steps", and perform annoying overflow checks, too.
+    if (steps < 0 && new_value + steps > new_value) {
+        new_value = std::numeric_limits<qint64>::min();
+    } else if (steps > 0 && new_value + steps < new_value) {
+        new_value = std::numeric_limits<qint64>::max();
+    } else {
+        new_value += steps;
+    }
+
+    SetValue(new_value);
+    UpdateText();
+}
+
+QAbstractSpinBox::StepEnabled CSpinBox::stepEnabled() const
+{
+    StepEnabled ret = StepNone;
+
+    if (value > min_value)
+        ret |= StepDownEnabled;
+
+    if (value < max_value)
+        ret |= StepUpEnabled;
+
+    return ret;
+}
+
+void CSpinBox::SetBase(int base)
+{
+    this->base = base;
+
+    UpdateText();
+}
+
+void CSpinBox::SetNumDigits(int num_digits)
+{
+    this->num_digits = num_digits;
+
+    UpdateText();
+}
+
+void CSpinBox::SetPrefix(const QString& prefix)
+{
+    this->prefix = prefix;
+
+    UpdateText();
+}
+
+void CSpinBox::SetSuffix(const QString& suffix)
+{
+    this->suffix = suffix;
+
+    UpdateText();
+}
+
+static QString StringToInputMask(const QString& input) {
+    QString mask = input;
+
+    // ... replace any special characters by their escaped counterparts ...
+    mask.replace("\\", "\\\\");
+    mask.replace("A", "\\A");
+    mask.replace("a", "\\a");
+    mask.replace("N", "\\N");
+    mask.replace("n", "\\n");
+    mask.replace("X", "\\X");
+    mask.replace("x", "\\x");
+    mask.replace("9", "\\9");
+    mask.replace("0", "\\0");
+    mask.replace("D", "\\D");
+    mask.replace("d", "\\d");
+    mask.replace("#", "\\#");
+    mask.replace("H", "\\H");
+    mask.replace("h", "\\h");
+    mask.replace("B", "\\B");
+    mask.replace("b", "\\b");
+    mask.replace(">", "\\>");
+    mask.replace("<", "\\<");
+    mask.replace("!", "\\!");
+
+    return mask;
+}
+
+void CSpinBox::UpdateText()
+{
+    // If a fixed number of digits is used, we put the line edit in insertion mode by setting an
+    // input mask.
+    QString mask;
+    if (num_digits != 0) {
+        mask += StringToInputMask(prefix);
+
+        // For base 10 and negative range, demand a single sign character
+        if (HasSign())
+            mask += "X"; // identified as "-" or "+" in the validator
+
+        // Uppercase digits greater than 9.
+        mask += ">";
+
+        // The greatest signed 64-bit number has 19 decimal digits.
+        // TODO: Could probably make this more generic with some logarithms.
+        // For reference, unsigned 64-bit can have up to 20 decimal digits.
+        int digits = (num_digits != 0) ? num_digits
+                     : (base == 16) ? 16
+                     : (base == 10) ? 19
+                     : 0xFF; // fallback case...
+
+        // Match num_digits digits
+        // Digits irrelevant to the chosen number base are filtered in the validator
+        mask += QString("H").repeated(std::max(num_digits, 1));
+
+        // Switch off case conversion
+        mask += "!";
+
+        mask += StringToInputMask(suffix);
+    }
+    lineEdit()->setInputMask(mask);
+
+    // Set new text without changing the cursor position. This will cause the cursor to briefly
+    // appear at the end of the line and then to jump back to its original position. That's
+    // a bit ugly, but better than having setText() move the cursor permanently all the time.
+    int cursor_position = lineEdit()->cursorPosition();
+    lineEdit()->setText(TextFromValue());
+    lineEdit()->setCursorPosition(cursor_position);
+}
+
+QString CSpinBox::TextFromValue()
+{
+    return prefix
+           + QString(HasSign() ? ((value < 0) ? "-" : "+") : "")
+           + QString("%1").arg(abs(value), num_digits, base, QLatin1Char('0')).toUpper()
+           + suffix;
+}
+
+qint64 CSpinBox::ValueFromText()
+{
+    unsigned strpos = prefix.length();
+
+    QString num_string = text().mid(strpos, text().length() - strpos - suffix.length());
+    return num_string.toLongLong(nullptr, base);
+}
+
+bool CSpinBox::HasSign() const
+{
+    return base == 10 && min_value < 0;
+}
+
+void CSpinBox::OnEditingFinished()
+{
+    // Only update for valid input
+    QString input = lineEdit()->text();
+    int pos = 0;
+    if (QValidator::Acceptable == validate(input, pos))
+        SetValue(ValueFromText());
+}
+
+QValidator::State CSpinBox::validate(QString& input, int& pos) const
+{
+    if (!prefix.isEmpty() && input.left(prefix.length()) != prefix)
+        return QValidator::Invalid;
+
+    unsigned strpos = prefix.length();
+
+    // Empty "numbers" allowed as intermediate values
+    if (strpos >= input.length() - HasSign() - suffix.length())
+        return QValidator::Intermediate;
+
+    _dbg_assert_(GUI, base <= 10 || base == 16);
+    QString regexp;
+
+    // Demand sign character for negative ranges
+    if (HasSign())
+        regexp += "[+\\-]";
+
+    // Match digits corresponding to the chosen number base.
+    regexp += QString("[0-%1").arg(std::min(base, 9));
+    if (base == 16) {
+        regexp += "a-fA-F";
+    }
+    regexp += "]";
+
+    // Specify number of digits
+    if (num_digits > 0) {
+        regexp += QString("{%1}").arg(num_digits);
+    } else {
+        regexp += "+";
+    }
+
+    // Match string
+    QRegExp num_regexp(regexp);
+    int num_pos = strpos;
+    QString sub_input = input.mid(strpos, input.length() - strpos - suffix.length());
+
+    if (!num_regexp.exactMatch(sub_input) && num_regexp.matchedLength() == 0)
+        return QValidator::Invalid;
+
+    sub_input = sub_input.left(num_regexp.matchedLength());
+    bool ok;
+    qint64 val = sub_input.toLongLong(&ok, base);
+
+    if (!ok)
+        return QValidator::Invalid;
+
+    // Outside boundaries => don't accept
+    if (val < min_value || val > max_value)
+        return QValidator::Invalid;
+
+    // Make sure we are actually at the end of this string...
+    strpos += num_regexp.matchedLength();
+
+    if (!suffix.isEmpty() && input.mid(strpos) != suffix) {
+        return QValidator::Invalid;
+    } else {
+        strpos += suffix.length();
+    }
+
+    if (strpos != input.length())
+        return QValidator::Invalid;
+
+    // At this point we can say for sure that the input is fine. Let's fix it up a bit though
+    input.replace(num_pos, sub_input.length(), sub_input.toUpper());
+
+    return QValidator::Acceptable;
+}
diff --git a/src/citra_qt/util/spinbox.hxx b/src/citra_qt/util/spinbox.hxx
new file mode 100644
index 000000000..68f5b9894
--- /dev/null
+++ b/src/citra_qt/util/spinbox.hxx
@@ -0,0 +1,88 @@
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+
+// Copyright 2014 Tony Wasserka
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above copyright
+//       notice, this list of conditions and the following disclaimer in the
+//       documentation and/or other materials provided with the distribution.
+//     * Neither the name of the owner nor the names of its contributors may
+//       be used to endorse or promote products derived from this software
+//       without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+#pragma once
+
+#include <QAbstractSpinBox>
+#include <QtGlobal>
+
+class QVariant;
+
+/**
+ * A custom spin box widget with enhanced functionality over Qt's QSpinBox
+ */
+class CSpinBox : public QAbstractSpinBox {
+    Q_OBJECT
+
+public:
+    CSpinBox(QWidget* parent = nullptr);
+
+    void stepBy(int steps) override;
+    StepEnabled stepEnabled() const override;
+
+    void SetValue(qint64 val);
+
+    void SetRange(qint64 min, qint64 max);
+
+    void SetBase(int base);
+
+    void SetPrefix(const QString& prefix);
+    void SetSuffix(const QString& suffix);
+
+    void SetNumDigits(int num_digits);
+
+    QValidator::State validate(QString& input, int& pos) const override;
+
+signals:
+    void ValueChanged(qint64 val);
+
+private slots:
+    void OnEditingFinished();
+
+private:
+    void UpdateText();
+
+    bool HasSign() const;
+
+    QString TextFromValue();
+    qint64 ValueFromText();
+
+    qint64 min_value, max_value;
+
+    qint64 value;
+
+    QString prefix, suffix;
+
+    int base;
+
+    int num_digits;
+};
diff --git a/src/common/chunk_file.h b/src/common/chunk_file.h
index 609784076..32af74594 100644
--- a/src/common/chunk_file.h
+++ b/src/common/chunk_file.h
@@ -204,11 +204,11 @@ public:
         {
             for (auto it = x.begin(), end = x.end(); it != end; ++it)
             {
-                if (it->second != NULL)
+                if (it->second != nullptr)
                     delete it->second;
             }
         }
-        T *dv = NULL;
+        T *dv = nullptr;
         DoMap(x, dv);
     }
 
@@ -264,11 +264,11 @@ public:
         {
             for (auto it = x.begin(), end = x.end(); it != end; ++it)
             {
-                if (it->second != NULL)
+                if (it->second != nullptr)
                     delete it->second;
             }
         }
-        T *dv = NULL;
+        T *dv = nullptr;
         DoMultimap(x, dv);
     }
 
@@ -320,7 +320,7 @@ public:
     template<class T>
     void Do(std::vector<T *> &x)
     {
-        T *dv = NULL;
+        T *dv = nullptr;
         DoVector(x, dv);
     }
 
@@ -369,7 +369,7 @@ public:
     template<class T>
     void Do(std::deque<T *> &x)
     {
-        T *dv = NULL;
+        T *dv = nullptr;
         DoDeque(x, dv);
     }
 
@@ -395,7 +395,7 @@ public:
     template<class T>
     void Do(std::list<T *> &x)
     {
-        T *dv = NULL;
+        T *dv = nullptr;
         Do(x, dv);
     }
 
@@ -433,7 +433,7 @@ public:
         {
             for (auto it = x.begin(), end = x.end(); it != end; ++it)
             {
-                if (*it != NULL)
+                if (*it != nullptr)
                     delete *it;
             }
         }
@@ -518,7 +518,7 @@ public:
     void DoClass(T *&x) {
         if (mode == MODE_READ)
         {
-            if (x != NULL)
+            if (x != nullptr)
                 delete x;
             x = new T();
         }
@@ -567,7 +567,7 @@ public:
                 {
                     if (mode == MODE_READ)
                     {
-                        cur->next = 0;
+                        cur->next = nullptr;
                         list_cur = cur;
                         if (prev)
                             prev->next = cur;
@@ -586,13 +586,13 @@ public:
                 if (mode == MODE_READ)
                 {
                     if (prev)
-                        prev->next = 0;
+                        prev->next = nullptr;
                     if (list_end)
                         *list_end = prev;
                     if (list_cur)
                     {
                         if (list_start == list_cur)
-                            list_start = 0;
+                            list_start = nullptr;
                         do
                         {
                             LinkedListItem<T>* next = list_cur->next;
diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
index d84ec4c42..db041780a 100644
--- a/src/common/common_funcs.h
+++ b/src/common/common_funcs.h
@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include "common_types.h"
+
 #ifdef _WIN32
 #define SLEEP(x) Sleep(x)
 #else
@@ -37,6 +39,8 @@ template<> struct CompileTimeAssert<true> {};
 #include <sys/endian.h>
 #endif
 
+#include "common_types.h"
+
 // go to debugger mode
     #ifdef GEKKO
         #define Crash()
@@ -73,6 +77,8 @@ inline u64 _rotr64(u64 x, unsigned int shift){
 }
 
 #else // WIN32
+#include <locale.h>
+
 // Function Cross-Compatibility
     #define strcasecmp _stricmp
     #define strncasecmp _strnicmp
@@ -106,7 +112,7 @@ inline u64 _rotr64(u64 x, unsigned int shift){
             // Restore the global locale
             _configthreadlocale(_DISABLE_PER_THREAD_LOCALE);
         }
-        else if(new_locale != NULL)
+        else if(new_locale != nullptr)
         {
             // Configure the thread to set the locale only for this thread
             _configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
diff --git a/src/common/console_listener.cpp b/src/common/console_listener.cpp
index d7f27c358..b6042796d 100644
--- a/src/common/console_listener.cpp
+++ b/src/common/console_listener.cpp
@@ -16,7 +16,7 @@
 ConsoleListener::ConsoleListener()
 {
 #ifdef _WIN32
-    hConsole = NULL;
+    hConsole = nullptr;
     bUseColor = true;
 #else
     bUseColor = isatty(fileno(stdout));
@@ -66,19 +66,19 @@ void ConsoleListener::UpdateHandle()
 void ConsoleListener::Close()
 {
 #ifdef _WIN32
-    if (hConsole == NULL)
+    if (hConsole == nullptr)
         return;
     FreeConsole();
-    hConsole = NULL;
+    hConsole = nullptr;
 #else
-    fflush(NULL);
+    fflush(nullptr);
 #endif
 }
 
 bool ConsoleListener::IsOpen()
 {
 #ifdef _WIN32
-    return (hConsole != NULL);
+    return (hConsole != nullptr);
 #else
     return true;
 #endif
diff --git a/src/common/extended_trace.cpp b/src/common/extended_trace.cpp
index bf61ac1d1..cf7c346d4 100644
--- a/src/common/extended_trace.cpp
+++ b/src/common/extended_trace.cpp
@@ -82,7 +82,7 @@ static void InitSymbolPath( PSTR lpszSymbolPath, PCSTR lpszIniPath )
     }
 
     // Add user defined path
-    if ( lpszIniPath != NULL )
+    if ( lpszIniPath != nullptr )
         if ( lpszIniPath[0] != '\0' )
         {
             strcat( lpszSymbolPath, ";" );
@@ -138,7 +138,7 @@ static BOOL GetFunctionInfoFromAddresses( ULONG fnAddress, ULONG stackAddress, L
     DWORD             dwSymSize = 10000;
     TCHAR             lpszUnDSymbol[BUFFERSIZE]=_T("?");
     CHAR              lpszNonUnicodeUnDSymbol[BUFFERSIZE]="?";
-    LPTSTR            lpszParamSep = NULL;
+    LPTSTR            lpszParamSep = nullptr;
     LPTSTR            lpszParsed = lpszUnDSymbol;
     PIMAGEHLP_SYMBOL  pSym = (PIMAGEHLP_SYMBOL)GlobalAlloc( GMEM_FIXED, dwSymSize );
 
@@ -187,13 +187,13 @@ static BOOL GetFunctionInfoFromAddresses( ULONG fnAddress, ULONG stackAddress, L
 
         // Let's go through the stack, and modify the function prototype, and insert the actual
         // parameter values from the stack
-        if ( _tcsstr( lpszUnDSymbol, _T("(void)") ) == NULL && _tcsstr( lpszUnDSymbol, _T("()") ) == NULL)
+        if ( _tcsstr( lpszUnDSymbol, _T("(void)") ) == nullptr && _tcsstr( lpszUnDSymbol, _T("()") ) == nullptr)
         {
             ULONG index = 0;
             for( ; ; index++ )
             {
                 lpszParamSep = _tcschr( lpszParsed, _T(',') );
-                if ( lpszParamSep == NULL )
+                if ( lpszParamSep == nullptr )
                     break;
 
                 *lpszParamSep = _T('\0');
@@ -205,7 +205,7 @@ static BOOL GetFunctionInfoFromAddresses( ULONG fnAddress, ULONG stackAddress, L
             }
 
             lpszParamSep = _tcschr( lpszParsed, _T(')') );
-            if ( lpszParamSep != NULL )
+            if ( lpszParamSep != nullptr )
             {
                 *lpszParamSep = _T('\0');
 
@@ -248,7 +248,7 @@ static BOOL GetSourceInfoFromAddress( UINT address, LPTSTR lpszSourceInfo )
         PCSTR2LPTSTR( lineInfo.FileName, lpszFileName );
         TCHAR fname[_MAX_FNAME];
         TCHAR ext[_MAX_EXT];
-        _tsplitpath(lpszFileName, NULL, NULL, fname, ext);
+        _tsplitpath(lpszFileName, nullptr, nullptr, fname, ext);
         _stprintf( lpszSourceInfo, _T("%s%s(%d)"), fname, ext, lineInfo.LineNumber );
         ret = TRUE;
     }
@@ -332,11 +332,11 @@ void StackTrace( HANDLE hThread, const char* lpszMessage, FILE *file )
                 hProcess,
                 hThread,
                 &callStack,
-                NULL,
-                NULL,
+                nullptr,
+                nullptr,
                 SymFunctionTableAccess,
                 SymGetModuleBase,
-                NULL);
+                nullptr);
 
             if ( index == 0 )
                 continue;
@@ -389,11 +389,11 @@ void StackTrace(HANDLE hThread, const char* lpszMessage, FILE *file, DWORD eip,
                 hProcess,
                 hThread,
                 &callStack,
-                NULL,
-                NULL,
+                nullptr,
+                nullptr,
                 SymFunctionTableAccess,
                 SymGetModuleBase,
-                NULL);
+                nullptr);
 
             if ( index == 0 )
                 continue;
diff --git a/src/common/fifo_queue.h b/src/common/fifo_queue.h
index 2c18285d4..b426e6596 100644
--- a/src/common/fifo_queue.h
+++ b/src/common/fifo_queue.h
@@ -57,7 +57,7 @@ public:
         // advance the read pointer
         m_read_ptr = m_read_ptr->next;
         // set the next element to NULL to stop the recursive deletion
-        tmpptr->next = NULL;
+        tmpptr->next = nullptr;
         delete tmpptr;    // this also deletes the element
     }
 
@@ -86,7 +86,7 @@ private:
     class ElementPtr
     {
     public:
-        ElementPtr() : current(NULL), next(NULL) {}
+        ElementPtr() : current(nullptr), next(nullptr) {}
 
         ~ElementPtr()
         {
diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp
index b6dec838c..6c4860503 100644
--- a/src/common/file_util.cpp
+++ b/src/common/file_util.cpp
@@ -140,7 +140,7 @@ bool CreateDir(const std::string &path)
 {
     INFO_LOG(COMMON, "CreateDir: directory %s", path.c_str());
 #ifdef _WIN32
-    if (::CreateDirectory(Common::UTF8ToTStr(path).c_str(), NULL))
+    if (::CreateDirectory(Common::UTF8ToTStr(path).c_str(), nullptr))
         return true;
     DWORD error = GetLastError();
     if (error == ERROR_ALREADY_EXISTS)
@@ -423,7 +423,7 @@ u32 ScanDirectoryTree(const std::string &directory, FSTEntry& parentEntry)
         FSTEntry entry;
         const std::string virtualName(Common::TStrToUTF8(ffd.cFileName));
 #else
-    struct dirent dirent, *result = NULL;
+    struct dirent dirent, *result = nullptr;
 
     DIR *dirp = opendir(directory.c_str());
     if (!dirp)
@@ -491,7 +491,7 @@ bool DeleteDirRecursively(const std::string &directory)
     {
         const std::string virtualName(Common::TStrToUTF8(ffd.cFileName));
 #else
-    struct dirent dirent, *result = NULL;
+    struct dirent dirent, *result = nullptr;
     DIR *dirp = opendir(directory.c_str());
     if (!dirp)
         return false;
@@ -552,7 +552,7 @@ void CopyDir(const std::string &source_path, const std::string &dest_path)
     if (!FileUtil::Exists(source_path)) return;
     if (!FileUtil::Exists(dest_path)) FileUtil::CreateFullPath(dest_path);
 
-    struct dirent dirent, *result = NULL;
+    struct dirent dirent, *result = nullptr;
     DIR *dirp = opendir(source_path.c_str());
     if (!dirp) return;
 
@@ -586,11 +586,11 @@ std::string GetCurrentDir()
 {
     char *dir;
     // Get the current working directory (getcwd uses malloc)
-    if (!(dir = __getcwd(NULL, 0))) {
+    if (!(dir = __getcwd(nullptr, 0))) {
 
         ERROR_LOG(COMMON, "GetCurrentDirectory failed: %s",
                 GetLastErrorMsg());
-        return NULL;
+        return nullptr;
     }
     std::string strDir = dir;
     free(dir);
@@ -626,7 +626,7 @@ std::string& GetExeDirectory()
     if (DolphinPath.empty())
     {
         TCHAR Dolphin_exe_Path[2048];
-        GetModuleFileName(NULL, Dolphin_exe_Path, 2048);
+        GetModuleFileName(nullptr, Dolphin_exe_Path, 2048);
         DolphinPath = Common::TStrToUTF8(Dolphin_exe_Path);
         DolphinPath = DolphinPath.substr(0, DolphinPath.find_last_of('\\'));
     }
@@ -826,7 +826,7 @@ void SplitFilename83(const std::string& filename, std::array<char, 9>& short_nam
 }
 
 IOFile::IOFile()
-    : m_file(NULL), m_good(true)
+    : m_file(nullptr), m_good(true)
 {}
 
 IOFile::IOFile(std::FILE* file)
@@ -834,7 +834,7 @@ IOFile::IOFile(std::FILE* file)
 {}
 
 IOFile::IOFile(const std::string& filename, const char openmode[])
-    : m_file(NULL), m_good(true)
+    : m_file(nullptr), m_good(true)
 {
     Open(filename, openmode);
 }
@@ -845,7 +845,7 @@ IOFile::~IOFile()
 }
 
 IOFile::IOFile(IOFile&& other)
-    : m_file(NULL), m_good(true)
+    : m_file(nullptr), m_good(true)
 {
     Swap(other);
 }
@@ -880,14 +880,14 @@ bool IOFile::Close()
     if (!IsOpen() || 0 != std::fclose(m_file))
         m_good = false;
 
-    m_file = NULL;
+    m_file = nullptr;
     return m_good;
 }
 
 std::FILE* IOFile::ReleaseHandle()
 {
     std::FILE* const ret = m_file;
-    m_file = NULL;
+    m_file = nullptr;
     return ret;
 }
 
diff --git a/src/common/file_util.h b/src/common/file_util.h
index 72b80be8a..beaf7174a 100644
--- a/src/common/file_util.h
+++ b/src/common/file_util.h
@@ -202,11 +202,11 @@ public:
         return WriteArray(reinterpret_cast<const char*>(data), length);
     }
 
-    bool IsOpen() { return NULL != m_file; }
+    bool IsOpen() { return nullptr != m_file; }
 
     // m_good is set to false when a read, write or other function fails
     bool IsGood() {    return m_good; }
-    operator void*() { return m_good ? m_file : NULL; }
+    operator void*() { return m_good ? m_file : nullptr; }
 
     std::FILE* ReleaseHandle();
 
diff --git a/src/common/linear_disk_cache.h b/src/common/linear_disk_cache.h
index f4263f72a..bb1b5174f 100644
--- a/src/common/linear_disk_cache.h
+++ b/src/common/linear_disk_cache.h
@@ -70,7 +70,7 @@ public:
             // good header, read some key/value pairs
             K key;
 
-            V *value = NULL;
+            V *value = nullptr;
             u32 value_size;
             u32 entry_number;
 
diff --git a/src/common/log.h b/src/common/log.h
index 14ad98c08..78f0dae4d 100644
--- a/src/common/log.h
+++ b/src/common/log.h
@@ -4,6 +4,9 @@
 
 #pragma once
 
+#include "common/common_funcs.h"
+#include "common/msg_handler.h"
+
 #ifndef LOGGING
 #define LOGGING
 #endif
@@ -62,7 +65,6 @@ enum LOG_TYPE {
     WII_IPC_HID,
     KERNEL,
     SVC,
-    NDMA,
     HLE,
     RENDER,
     GPU,
diff --git a/src/common/log_manager.cpp b/src/common/log_manager.cpp
index 2ef7d98c0..128c15388 100644
--- a/src/common/log_manager.cpp
+++ b/src/common/log_manager.cpp
@@ -21,7 +21,7 @@ void GenericLog(LogTypes::LOG_LEVELS level, LogTypes::LOG_TYPE type, const char*
     va_end(args);
 }
 
-LogManager *LogManager::m_logManager = NULL;
+LogManager *LogManager::m_logManager = nullptr;
 
 LogManager::LogManager()
 {
@@ -68,7 +68,6 @@ LogManager::LogManager()
     m_Log[LogTypes::RENDER]             = new LogContainer("RENDER",            "RENDER");
     m_Log[LogTypes::GPU]                = new LogContainer("GPU",               "GPU");
     m_Log[LogTypes::SVC]                = new LogContainer("SVC",               "Supervisor Call HLE");
-    m_Log[LogTypes::NDMA]               = new LogContainer("NDMA",              "NDMA");
     m_Log[LogTypes::HLE]                = new LogContainer("HLE",               "High Level Emulation");
     m_Log[LogTypes::HW]                 = new LogContainer("HW",                "Hardware");
     m_Log[LogTypes::ACTIONREPLAY]       = new LogContainer("ActionReplay",      "ActionReplay");
@@ -141,7 +140,7 @@ void LogManager::Init()
 void LogManager::Shutdown()
 {
     delete m_logManager;
-    m_logManager = NULL;
+    m_logManager = nullptr;
 }
 
 LogContainer::LogContainer(const char* shortName, const char* fullName, bool enable)
diff --git a/src/common/mem_arena.cpp b/src/common/mem_arena.cpp
index 67dbaf509..7d4fda0e2 100644
--- a/src/common/mem_arena.cpp
+++ b/src/common/mem_arena.cpp
@@ -30,7 +30,7 @@
 #endif
 
 #ifdef IOS
-void* globalbase = NULL;
+void* globalbase = nullptr;
 #endif
 
 #ifdef ANDROID
@@ -121,7 +121,7 @@ void MemArena::GrabLowMemSpace(size_t size)
 {
 #ifdef _WIN32
 #ifndef _XBOX
-    hMemoryMapping = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, (DWORD)(size), NULL);
+    hMemoryMapping = CreateFileMapping(INVALID_HANDLE_VALUE, nullptr, PAGE_READWRITE, 0, (DWORD)(size), nullptr);
     GetSystemInfo(&sysInfo);
 #endif
 #elif defined(ANDROID)
@@ -178,7 +178,7 @@ void *MemArena::CreateView(s64 offset, size_t size, void *base)
 #ifdef _XBOX
     size = roundup(size);
     // use 64kb pages
-    void * ptr = VirtualAlloc(NULL, size, MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
+    void * ptr = VirtualAlloc(nullptr, size, MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
     return ptr;
 #else
     size = roundup(size);
@@ -243,8 +243,8 @@ u8* MemArena::Find4GBBase()
     return base;
 #else
 #ifdef IOS
-    void* base = NULL;
-    if (globalbase == NULL){
+    void* base = nullptr;
+    if (globalbase == nullptr){
         base = mmap(0, 0x08000000, PROT_READ | PROT_WRITE,
             MAP_ANON | MAP_SHARED, -1, 0);
         if (base == MAP_FAILED) {
@@ -357,7 +357,7 @@ bail:
         if (views[j].out_ptr_low && *views[j].out_ptr_low)
         {
             arena->ReleaseView(*views[j].out_ptr_low, views[j].size);
-            *views[j].out_ptr_low = NULL;
+            *views[j].out_ptr_low = nullptr;
         }
         if (*views[j].out_ptr)
         {
@@ -369,7 +369,7 @@ bail:
                 arena->ReleaseView(*views[j].out_ptr, views[j].size);
             }
 #endif
-            *views[j].out_ptr = NULL;
+            *views[j].out_ptr = nullptr;
         }
     }
     return false;
@@ -415,7 +415,7 @@ u8 *MemoryMap_Setup(const MemoryView *views, int num_views, u32 flags, MemArena
 #elif defined(_WIN32)
     // Try a whole range of possible bases. Return once we got a valid one.
     u32 max_base_addr = 0x7FFF0000 - 0x10000000;
-    u8 *base = NULL;
+    u8 *base = nullptr;
 
     for (u32 base_addr = 0x01000000; base_addr < max_base_addr; base_addr += 0x400000)
     {
@@ -463,8 +463,8 @@ void MemoryMap_Shutdown(const MemoryView *views, int num_views, u32 flags, MemAr
             arena->ReleaseView(*views[i].out_ptr_low, views[i].size);
         if (*views[i].out_ptr && (views[i].out_ptr_low && *views[i].out_ptr != *views[i].out_ptr_low))
             arena->ReleaseView(*views[i].out_ptr, views[i].size);
-        *views[i].out_ptr = NULL;
+        *views[i].out_ptr = nullptr;
         if (views[i].out_ptr_low)
-            *views[i].out_ptr_low = NULL;
+            *views[i].out_ptr_low = nullptr;
     }
 }
diff --git a/src/common/memory_util.cpp b/src/common/memory_util.cpp
index b6f66e4e1..93da5500b 100644
--- a/src/common/memory_util.cpp
+++ b/src/common/memory_util.cpp
@@ -93,7 +93,7 @@ void* AllocateMemoryPages(size_t size)
     // printf("Mapped memory at %p (size %ld)\n", ptr,
     //    (unsigned long)size);
 
-    if (ptr == NULL)
+    if (ptr == nullptr)
         PanicAlert("Failed to allocate raw memory");
 
     return ptr;
@@ -104,7 +104,7 @@ void* AllocateAlignedMemory(size_t size,size_t alignment)
 #ifdef _WIN32
     void* ptr =  _aligned_malloc(size,alignment);
 #else
-    void* ptr = NULL;
+    void* ptr = nullptr;
 #ifdef ANDROID
     ptr = memalign(alignment, size);
 #else
@@ -116,7 +116,7 @@ void* AllocateAlignedMemory(size_t size,size_t alignment)
     // printf("Mapped memory at %p (size %ld)\n", ptr,
     //    (unsigned long)size);
 
-    if (ptr == NULL)
+    if (ptr == nullptr)
         PanicAlert("Failed to allocate aligned memory");
 
     return ptr;
@@ -130,7 +130,7 @@ void FreeMemoryPages(void* ptr, size_t size)
 
         if (!VirtualFree(ptr, 0, MEM_RELEASE))
             PanicAlert("FreeMemoryPages failed!\n%s", GetLastErrorMsg());
-        ptr = NULL; // Is this our responsibility?
+        ptr = nullptr; // Is this our responsibility?
 
 #else
         munmap(ptr, size);
@@ -184,7 +184,7 @@ std::string MemUsage()
     // Print information about the memory usage of the process.
 
     hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processID);
-    if (NULL == hProcess) return "MemUsage Error";
+    if (nullptr == hProcess) return "MemUsage Error";
 
     if (GetProcessMemoryInfo(hProcess, &pmc, sizeof(pmc)))
         Ret = Common::StringFromFormat("%s K", Common::ThousandSeparate(pmc.WorkingSetSize / 1024, 7).c_str());
diff --git a/src/common/misc.cpp b/src/common/misc.cpp
index cf6df44e8..bc9d26188 100644
--- a/src/common/misc.cpp
+++ b/src/common/misc.cpp
@@ -23,9 +23,9 @@ const char* GetLastErrorMsg()
 #ifdef _WIN32
     static __declspec(thread) char err_str[buff_size] = {};
 
-    FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
+    FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-        err_str, buff_size, NULL);
+        err_str, buff_size, nullptr);
 #else
     static __thread char err_str[buff_size] = {};
 
diff --git a/src/common/platform.h b/src/common/platform.h
index d9f095433..53d98fe74 100644
--- a/src/common/platform.h
+++ b/src/common/platform.h
@@ -77,7 +77,7 @@
 inline struct tm* localtime_r(const time_t *clock, struct tm *result) {
     if (localtime_s(result, clock) == 0)
         return result;
-    return NULL;
+    return nullptr;
 }
 
 #else
diff --git a/src/common/string_util.cpp b/src/common/string_util.cpp
index dcec9275f..19e162c27 100644
--- a/src/common/string_util.cpp
+++ b/src/common/string_util.cpp
@@ -31,7 +31,7 @@ std::string ToUpper(std::string str) {
 // faster than sscanf
 bool AsciiToHex(const char* _szValue, u32& result)
 {
-    char *endptr = NULL;
+    char *endptr = nullptr;
     const u32 value = strtoul(_szValue, &endptr, 16);
 
     if (!endptr || *endptr)
@@ -69,7 +69,7 @@ bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list ar
     // will be present in the middle of a multibyte sequence.
     //
     // This is why we lookup an ANSI (cp1252) locale here and use _vsnprintf_l.
-    static locale_t c_locale = NULL;
+    static locale_t c_locale = nullptr;
     if (!c_locale)
         c_locale = _create_locale(LC_ALL, ".1252");
     writtenCount = _vsnprintf_l(out, outsize, format, c_locale, args);
@@ -92,7 +92,7 @@ bool CharArrayFromFormatV(char* out, int outsize, const char* format, va_list ar
 std::string StringFromFormat(const char* format, ...)
 {
     va_list args;
-    char *buf = NULL;
+    char *buf = nullptr;
 #ifdef _WIN32
     int required = 0;
 
@@ -162,7 +162,7 @@ std::string StripQuotes(const std::string& s)
 
 bool TryParse(const std::string &str, u32 *const output)
 {
-    char *endptr = NULL;
+    char *endptr = nullptr;
 
     // Reset errno to a value other than ERANGE
     errno = 0;
@@ -528,7 +528,7 @@ std::u16string UTF8ToUTF16(const std::string& input)
 {
     std::u16string result;
 
-    iconv_t const conv_desc = iconv_open("UTF-16", "UTF-8");
+    iconv_t const conv_desc = iconv_open("UTF-16LE", "UTF-8");
     if ((iconv_t)(-1) == conv_desc)
     {
         ERROR_LOG(COMMON, "Iconv initialization failure [UTF-8]: %s", strerror(errno));
@@ -582,7 +582,7 @@ std::u16string UTF8ToUTF16(const std::string& input)
 
 std::string UTF16ToUTF8(const std::u16string& input)
 {
-    return CodeToUTF8("UTF-16", input);
+    return CodeToUTF8("UTF-16LE", input);
 }
 
 std::string CP1252ToUTF8(const std::string& input)
diff --git a/src/common/thread_queue_list.h b/src/common/thread_queue_list.h
index 59efbce4c..7e3b620c7 100644
--- a/src/common/thread_queue_list.h
+++ b/src/common/thread_queue_list.h
@@ -37,7 +37,7 @@ struct ThreadQueueList {
     ~ThreadQueueList() {
         for (int i = 0; i < NUM_QUEUES; ++i)
         {
-            if (queues[i].data != NULL)
+            if (queues[i].data != nullptr)
                 free(queues[i].data);
         }
     }
@@ -46,7 +46,7 @@ struct ThreadQueueList {
     int contains(const IdType uid) {
         for (int i = 0; i < NUM_QUEUES; ++i)
         {
-            if (queues[i].data == NULL)
+            if (queues[i].data == nullptr)
                 continue;
 
             Queue *cur = &queues[i];
@@ -133,7 +133,7 @@ struct ThreadQueueList {
     inline void clear() {
         for (int i = 0; i < NUM_QUEUES; ++i)
         {
-            if (queues[i].data != NULL)
+            if (queues[i].data != nullptr)
                 free(queues[i].data);
         }
         memset(queues, 0, sizeof(queues));
@@ -147,7 +147,7 @@ struct ThreadQueueList {
 
     inline void prepare(u32 priority) {
         Queue *cur = &queues[priority];
-        if (cur->next == NULL)
+        if (cur->next == nullptr)
             link(priority, INITIAL_CAPACITY);
     }
 
@@ -176,7 +176,7 @@ private:
 
         for (int i = (int) priority - 1; i >= 0; --i)
         {
-            if (queues[i].next != NULL)
+            if (queues[i].next != nullptr)
             {
                 cur->next = queues[i].next;
                 queues[i].next = cur;
@@ -193,7 +193,7 @@ private:
         int size = cur->end - cur->first;
         if (size >= cur->capacity - 2)  {
             IdType *new_data = (IdType *)realloc(cur->data, cur->capacity * 2 * sizeof(IdType));
-            if (new_data != NULL)  {
+            if (new_data != nullptr)  {
                 cur->capacity *= 2;
                 cur->data = new_data;
             }
diff --git a/src/common/timer.cpp b/src/common/timer.cpp
index ded4a344e..4a797f751 100644
--- a/src/common/timer.cpp
+++ b/src/common/timer.cpp
@@ -25,7 +25,7 @@ u32 Timer::GetTimeMs()
     return timeGetTime();
 #else
     struct timeval t;
-    (void)gettimeofday(&t, NULL);
+    (void)gettimeofday(&t, nullptr);
     return ((u32)(t.tv_sec * 1000 + t.tv_usec / 1000));
 #endif
 }
@@ -183,7 +183,7 @@ std::string Timer::GetTimeFormatted()
     return StringFromFormat("%s:%03i", tmp, tp.millitm);
 #else
     struct timeval t;
-    (void)gettimeofday(&t, NULL);
+    (void)gettimeofday(&t, nullptr);
     return StringFromFormat("%s:%03d", tmp, (int)(t.tv_usec / 1000));
 #endif
 }
@@ -197,7 +197,7 @@ double Timer::GetDoubleTime()
     (void)::ftime(&tp);
 #else
     struct timeval t;
-    (void)gettimeofday(&t, NULL);
+    (void)gettimeofday(&t, nullptr);
 #endif
     // Get continuous timestamp
     u64 TmpSeconds = Common::Timer::GetTimeSinceJan1970();
diff --git a/src/common/utf8.cpp b/src/common/utf8.cpp
index be4ebc855..66a2f6339 100644
--- a/src/common/utf8.cpp
+++ b/src/common/utf8.cpp
@@ -281,28 +281,28 @@ int u8_read_escape_sequence(const char *str, u32 *dest)
     do {
       digs[dno++] = str[i++];
     } while (octal_digit(str[i]) && dno < 3);
-    ch = strtol(digs, NULL, 8);
+    ch = strtol(digs, nullptr, 8);
   }
   else if (str[0] == 'x') {
     while (hex_digit(str[i]) && dno < 2) {
       digs[dno++] = str[i++];
     }
     if (dno > 0)
-      ch = strtol(digs, NULL, 16);
+      ch = strtol(digs, nullptr, 16);
   }
   else if (str[0] == 'u') {
     while (hex_digit(str[i]) && dno < 4) {
       digs[dno++] = str[i++];
     }
     if (dno > 0)
-      ch = strtol(digs, NULL, 16);
+      ch = strtol(digs, nullptr, 16);
   }
   else if (str[0] == 'U') {
     while (hex_digit(str[i]) && dno < 8) {
       digs[dno++] = str[i++];
     }
     if (dno > 0)
-      ch = strtol(digs, NULL, 16);
+      ch = strtol(digs, nullptr, 16);
   }
   *dest = ch;
 
@@ -353,7 +353,7 @@ const char *u8_strchr(const char *s, u32 ch, int *charn)
     lasti = i;
     (*charn)++;
   }
-  return NULL;
+  return nullptr;
 }
 
 const char *u8_memchr(const char *s, u32 ch, size_t sz, int *charn)
@@ -378,7 +378,7 @@ const char *u8_memchr(const char *s, u32 ch, size_t sz, int *charn)
     lasti = i;
     (*charn)++;
   }
-  return NULL;
+  return nullptr;
 }
 
 int u8_is_locale_utf8(const char *locale)
@@ -419,35 +419,35 @@ bool UTF8StringHasNonASCII(const char *utf8string) {
 
 std::string ConvertWStringToUTF8(const wchar_t *wstr) {
     int len = (int)wcslen(wstr);
-    int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr, len, 0, 0, NULL, NULL);
+    int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr, len, 0, 0, nullptr, nullptr);
     std::string s;
     s.resize(size);
     if (size > 0) {
-        WideCharToMultiByte(CP_UTF8, 0, wstr, len, &s[0], size, NULL, NULL);
+        WideCharToMultiByte(CP_UTF8, 0, wstr, len, &s[0], size, nullptr, nullptr);
     }
     return s;
 }
 
 std::string ConvertWStringToUTF8(const std::wstring &wstr) {
     int len = (int)wstr.size();
-    int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, 0, 0, NULL, NULL);
+    int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, 0, 0, nullptr, nullptr);
     std::string s;
     s.resize(size);
     if (size > 0) {
-        WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, &s[0], size, NULL, NULL);
+        WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, &s[0], size, nullptr, nullptr);
     }
     return s;
 }
 
 void ConvertUTF8ToWString(wchar_t *dest, size_t destSize, const std::string &source) {
     int len = (int)source.size();
-    int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, NULL, 0);
+    int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, nullptr, 0);
     MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, dest, std::min((int)destSize, size));
 }
 
 std::wstring ConvertUTF8ToWString(const std::string &source) {
     int len = (int)source.size();
-    int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, NULL, 0);
+    int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, nullptr, 0);
     std::wstring str;
     str.resize(size);
     if (size > 0) {
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 48241c3d4..8f6792791 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -59,10 +59,10 @@ set(SRCS
             hle/svc.cpp
             hw/gpu.cpp
             hw/hw.cpp
-            hw/ndma.cpp
             loader/elf.cpp
             loader/loader.cpp
             loader/ncch.cpp
+            loader/3dsx.cpp
             core.cpp
             core_timing.cpp
             mem_map.cpp
@@ -139,10 +139,10 @@ set(HEADERS
             hle/svc.h
             hw/gpu.h
             hw/hw.h
-            hw/ndma.h
             loader/elf.h
             loader/loader.h
             loader/ncch.h
+            loader/3dsx.h
             core.h
             core_timing.h
             mem_map.h
diff --git a/src/core/arm/interpreter/armemu.cpp b/src/core/arm/interpreter/armemu.cpp
index 73223874e..d717bd2c8 100644
--- a/src/core/arm/interpreter/armemu.cpp
+++ b/src/core/arm/interpreter/armemu.cpp
@@ -5724,7 +5724,7 @@ L_stm_s_takeabort:
                 s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
                 s16 b1 = (state->Reg[src2] & 0xFFFF);
                 s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
-                state->Reg[tar] = (a1 - a2)&0xFFFF | (((b1 - b2)&0xFFFF)<< 0x10);
+                state->Reg[tar] = ((a1 - a2) & 0xFFFF) | (((b1 - b2)&0xFFFF)<< 0x10);
                 return 1;
             }
             else if ((instr & 0xFF0) == 0xf10)//sadd16
@@ -5736,7 +5736,7 @@ L_stm_s_takeabort:
                 s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
                 s16 b1 = (state->Reg[src2] & 0xFFFF);
                 s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
-                state->Reg[tar] = (a1 + a2)&0xFFFF | (((b1 + b2)&0xFFFF)<< 0x10);
+                state->Reg[tar] = ((a1 + a2) & 0xFFFF) | (((b1 + b2)&0xFFFF)<< 0x10);
                 return 1;
             }
             else if ((instr & 0xFF0) == 0xf50)//ssax
@@ -5748,7 +5748,7 @@ L_stm_s_takeabort:
                 s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
                 s16 b1 = (state->Reg[src2] & 0xFFFF);
                 s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
-                state->Reg[tar] = (a1 - b2) & 0xFFFF | (((a2 + b1) & 0xFFFF) << 0x10);
+                state->Reg[tar] = ((a1 + b2) & 0xFFFF) | (((a2 - b1) & 0xFFFF) << 0x10);
                 return 1;
             }
             else if ((instr & 0xFF0) == 0xf30)//sasx
@@ -5760,7 +5760,7 @@ L_stm_s_takeabort:
                 s16 a2 = ((state->Reg[src1] >> 0x10) & 0xFFFF);
                 s16 b1 = (state->Reg[src2] & 0xFFFF);
                 s16 b2 = ((state->Reg[src2] >> 0x10) & 0xFFFF);
-                state->Reg[tar] = (a2 - b1) & 0xFFFF | (((a2 + b1) & 0xFFFF) << 0x10);
+                state->Reg[tar] = ((a1 - b2) & 0xFFFF) | (((a2 + b1) & 0xFFFF) << 0x10);
                 return 1;
             }
             else printf ("Unhandled v6 insn: sadd/ssub\n");
diff --git a/src/core/core_timing.cpp b/src/core/core_timing.cpp
index 558c6cbf7..bf8acf41f 100644
--- a/src/core/core_timing.cpp
+++ b/src/core/core_timing.cpp
@@ -67,7 +67,7 @@ s64 idledCycles;
 static std::recursive_mutex externalEventSection;
 
 // Warning: not included in save state.
-void(*advanceCallback)(int cyclesExecuted) = NULL;
+void(*advanceCallback)(int cyclesExecuted) = nullptr;
 
 void SetClockFrequencyMHz(int cpuMhz)
 {
@@ -231,7 +231,7 @@ void ClearPendingEvents()
 
 void AddEventToQueue(Event* ne)
 {
-    Event* prev = NULL;
+    Event* prev = nullptr;
     Event** pNext = &first;
     for (;;)
     {
@@ -327,7 +327,7 @@ s64 UnscheduleThreadsafeEvent(int event_type, u64 userdata)
     }
     if (!tsFirst)
     {
-        tsLast = NULL;
+        tsLast = nullptr;
         return result;
     }
 
@@ -433,7 +433,7 @@ void RemoveThreadsafeEvent(int event_type)
     }
     if (!tsFirst)
     {
-        tsLast = NULL;
+        tsLast = nullptr;
         return;
     }
     Event *prev = tsFirst;
@@ -495,7 +495,7 @@ void MoveEvents()
         AddEventToQueue(tsFirst);
         tsFirst = next;
     }
-    tsLast = NULL;
+    tsLast = nullptr;
 
     // Move free events to threadsafe pool
     while (allocatedTsEvents > 0 && eventPool)
@@ -614,7 +614,7 @@ void DoState(PointerWrap &p)
     // These (should) be filled in later by the modules.
     event_types.resize(n, EventType(AntiCrashCallback, "INVALID EVENT"));
 
-    p.DoLinkedList<BaseEvent, GetNewEvent, FreeEvent, Event_DoState>(first, (Event **)NULL);
+    p.DoLinkedList<BaseEvent, GetNewEvent, FreeEvent, Event_DoState>(first, (Event **)nullptr);
     p.DoLinkedList<BaseEvent, GetNewTsEvent, FreeTsEvent, Event_DoState>(tsFirst, &tsLast);
 
     p.Do(g_clock_rate_arm11);
diff --git a/src/core/file_sys/archive_sdmc.cpp b/src/core/file_sys/archive_sdmc.cpp
index 169ab0f1c..fc0b9b72d 100644
--- a/src/core/file_sys/archive_sdmc.cpp
+++ b/src/core/file_sys/archive_sdmc.cpp
@@ -100,6 +100,8 @@ bool Archive_SDMC::RenameDirectory(const FileSys::Path& src_path, const FileSys:
 std::unique_ptr<Directory> Archive_SDMC::OpenDirectory(const Path& path) const {
     DEBUG_LOG(FILESYS, "called path=%s", path.DebugStr().c_str());
     Directory_SDMC* directory = new Directory_SDMC(this, path);
+    if (!directory->Open())
+        return nullptr;
     return std::unique_ptr<Directory>(directory);
 }
 
diff --git a/src/core/file_sys/directory.h b/src/core/file_sys/directory.h
index e10431337..1bb4101d6 100644
--- a/src/core/file_sys/directory.h
+++ b/src/core/file_sys/directory.h
@@ -42,6 +42,12 @@ public:
     virtual ~Directory() { }
 
     /**
+    * Open the directory
+    * @return true if the directory opened correctly
+    */
+    virtual bool Open() = 0;
+
+    /**
      * List files contained in the directory
      * @param count Number of entries to return at once in entries
      * @param entries Buffer to read data into
diff --git a/src/core/file_sys/directory_romfs.cpp b/src/core/file_sys/directory_romfs.cpp
index 4e8f4c04d..e6d571391 100644
--- a/src/core/file_sys/directory_romfs.cpp
+++ b/src/core/file_sys/directory_romfs.cpp
@@ -17,6 +17,10 @@ Directory_RomFS::Directory_RomFS() {
 Directory_RomFS::~Directory_RomFS() {
 }
 
+bool Directory_RomFS::Open() {
+    return false;
+}
+
 /**
  * List files contained in the directory
  * @param count Number of entries to return at once in entries
diff --git a/src/core/file_sys/directory_romfs.h b/src/core/file_sys/directory_romfs.h
index 4b71c4b13..e2944099e 100644
--- a/src/core/file_sys/directory_romfs.h
+++ b/src/core/file_sys/directory_romfs.h
@@ -20,6 +20,12 @@ public:
     ~Directory_RomFS() override;
 
     /**
+    * Open the directory
+    * @return true if the directory opened correctly
+    */
+    bool Open() override;
+
+    /**
      * List files contained in the directory
      * @param count Number of entries to return at once in entries
      * @param entries Buffer to read data into
diff --git a/src/core/file_sys/directory_sdmc.cpp b/src/core/file_sys/directory_sdmc.cpp
index 60a197ce9..0f156a127 100644
--- a/src/core/file_sys/directory_sdmc.cpp
+++ b/src/core/file_sys/directory_sdmc.cpp
@@ -19,15 +19,22 @@ Directory_SDMC::Directory_SDMC(const Archive_SDMC* archive, const Path& path) {
     // TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass
     // the root directory we set while opening the archive.
     // For example, opening /../../usr/bin can give the emulated program your installed programs.
-    std::string absolute_path = archive->GetMountPoint() + path.AsString();
-    FileUtil::ScanDirectoryTree(absolute_path, directory);
-    children_iterator = directory.children.begin();
+    this->path = archive->GetMountPoint() + path.AsString();
+
 }
 
 Directory_SDMC::~Directory_SDMC() {
     Close();
 }
 
+bool Directory_SDMC::Open() {
+    if (!FileUtil::IsDirectory(path))
+        return false;
+    FileUtil::ScanDirectoryTree(path, directory);
+    children_iterator = directory.children.begin();
+    return true;
+}
+
 /**
  * List files contained in the directory
  * @param count Number of entries to return at once in entries
diff --git a/src/core/file_sys/directory_sdmc.h b/src/core/file_sys/directory_sdmc.h
index 4520d0401..4c08b0d61 100644
--- a/src/core/file_sys/directory_sdmc.h
+++ b/src/core/file_sys/directory_sdmc.h
@@ -23,6 +23,12 @@ public:
     ~Directory_SDMC() override;
 
     /**
+    * Open the directory
+    * @return true if the directory opened correctly
+    */
+    bool Open() override;
+
+    /**
      * List files contained in the directory
      * @param count Number of entries to return at once in entries
      * @param entries Buffer to read data into
@@ -37,6 +43,7 @@ public:
     bool Close() const override;
 
 private:
+    std::string path;
     u32 total_entries_in_directory;
     FileUtil::FSTEntry directory;
 
diff --git a/src/core/file_sys/file_sdmc.cpp b/src/core/file_sys/file_sdmc.cpp
index a4b90670a..b01d96e3d 100644
--- a/src/core/file_sys/file_sdmc.cpp
+++ b/src/core/file_sys/file_sdmc.cpp
@@ -38,12 +38,15 @@ bool File_SDMC::Open() {
     }
 
     std::string mode_string;
-    if (mode.read_flag && mode.write_flag)
+    if (mode.create_flag)
         mode_string = "w+";
+    else if (mode.write_flag)
+        mode_string = "r+"; // Files opened with Write access can be read from
     else if (mode.read_flag)
         mode_string = "r";
-    else if (mode.write_flag)
-        mode_string = "w";
+    
+    // Open the file in binary mode, to avoid problems with CR/LF on Windows systems
+    mode_string += "b";
 
     file = new FileUtil::IOFile(path, mode_string.c_str());
     return true;
diff --git a/src/core/hle/kernel/address_arbiter.cpp b/src/core/hle/kernel/address_arbiter.cpp
index db571b895..ce4f3c854 100644
--- a/src/core/hle/kernel/address_arbiter.cpp
+++ b/src/core/hle/kernel/address_arbiter.cpp
@@ -53,7 +53,7 @@ ResultCode ArbitrateAddress(Handle handle, ArbitrationType type, u32 address, s3
     // Wait current thread (acquire the arbiter)...
     case ArbitrationType::WaitIfLessThan:
         if ((s32)Memory::Read32(address) <= value) {
-            Kernel::WaitCurrentThread(WAITTYPE_ARB, handle);
+            Kernel::WaitCurrentThread(WAITTYPE_ARB, handle, address);
             HLE::Reschedule(__func__);
         }
         break;
diff --git a/src/core/hle/kernel/archive.cpp b/src/core/hle/kernel/archive.cpp
index 647f0dea9..a875fa7ff 100644
--- a/src/core/hle/kernel/archive.cpp
+++ b/src/core/hle/kernel/archive.cpp
@@ -421,6 +421,11 @@ ResultVal<Handle> OpenDirectoryFromArchive(Handle archive_handle, const FileSys:
     directory->path = path;
     directory->backend = archive->backend->OpenDirectory(path);
 
+    if (!directory->backend) {
+        return ResultCode(ErrorDescription::NotFound, ErrorModule::FS,
+                          ErrorSummary::NotFound, ErrorLevel::Permanent);
+    }
+
     return MakeResult<Handle>(handle);
 }
 
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index c01d76e4d..492b917e1 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -64,6 +64,7 @@ public:
 
     WaitType wait_type;
     Handle wait_handle;
+    VAddr wait_address;
 
     std::vector<Handle> waiting_threads;
 
@@ -127,6 +128,7 @@ void ResetThread(Thread* t, u32 arg, s32 lowest_priority) {
     }
     t->wait_type = WAITTYPE_NONE;
     t->wait_handle = 0;
+    t->wait_address = 0;
 }
 
 /// Change a thread to "ready" state
@@ -147,11 +149,17 @@ void ChangeReadyState(Thread* t, bool ready) {
 }
 
 /// Verify that a thread has not been released from waiting
-inline bool VerifyWait(const Thread* thread, WaitType type, Handle wait_handle) {
+static bool VerifyWait(const Thread* thread, WaitType type, Handle wait_handle) {
     _dbg_assert_(KERNEL, thread != nullptr);
     return (type == thread->wait_type) && (wait_handle == thread->wait_handle) && (thread->IsWaiting());
 }
 
+/// Verify that a thread has not been released from waiting (with wait address)
+static bool VerifyWait(const Thread* thread, WaitType type, Handle wait_handle, VAddr wait_address) {
+    _dbg_assert_(KERNEL, thread != nullptr);
+    return VerifyWait(thread, type, wait_handle) && (wait_address == thread->wait_address);
+}
+
 /// Stops the current thread
 ResultCode StopThread(Handle handle, const char* reason) {
     Thread* thread = g_object_pool.Get<Thread>(handle);
@@ -173,6 +181,7 @@ ResultCode StopThread(Handle handle, const char* reason) {
     // Stopped threads are never waiting.
     thread->wait_type = WAITTYPE_NONE;
     thread->wait_handle = 0;
+    thread->wait_address = 0;
 
     return RESULT_SUCCESS;
 }
@@ -201,12 +210,12 @@ Handle ArbitrateHighestPriorityThread(u32 arbiter, u32 address) {
     for (Handle handle : thread_queue) {
         Thread* thread = g_object_pool.Get<Thread>(handle);
 
-        // TODO(bunnei): Verify arbiter address...
-        if (!VerifyWait(thread, WAITTYPE_ARB, arbiter))
+        if (!VerifyWait(thread, WAITTYPE_ARB, arbiter, address))
             continue;
 
         if (thread == nullptr)
             continue; // TODO(yuriks): Thread handle will hang around forever. Should clean up.
+
         if(thread->current_priority <= priority) {
             highest_priority_thread = handle;
             priority = thread->current_priority;
@@ -226,8 +235,7 @@ void ArbitrateAllThreads(u32 arbiter, u32 address) {
     for (Handle handle : thread_queue) {
         Thread* thread = g_object_pool.Get<Thread>(handle);
 
-        // TODO(bunnei): Verify arbiter address...
-        if (VerifyWait(thread, WAITTYPE_ARB, arbiter))
+        if (VerifyWait(thread, WAITTYPE_ARB, arbiter, address))
             ResumeThreadFromWait(handle);
     }
 }
@@ -281,11 +289,6 @@ Thread* NextThread() {
     return Kernel::g_object_pool.Get<Thread>(next);
 }
 
-/**
- * Puts the current thread in the wait state for the given type
- * @param wait_type Type of wait
- * @param wait_handle Handle of Kernel object that we are waiting on, defaults to current thread
- */
 void WaitCurrentThread(WaitType wait_type, Handle wait_handle) {
     Thread* thread = GetCurrentThread();
     thread->wait_type = wait_type;
@@ -293,6 +296,11 @@ void WaitCurrentThread(WaitType wait_type, Handle wait_handle) {
     ChangeThreadState(thread, ThreadStatus(THREADSTATUS_WAIT | (thread->status & THREADSTATUS_SUSPEND)));
 }
 
+void WaitCurrentThread(WaitType wait_type, Handle wait_handle, VAddr wait_address) {
+    WaitCurrentThread(wait_type, wait_handle);
+    GetCurrentThread()->wait_address = wait_address;
+}
+
 /// Resumes a thread from waiting by marking it as "ready"
 void ResumeThreadFromWait(Handle handle) {
     Thread* thread = Kernel::g_object_pool.Get<Thread>(handle);
@@ -343,6 +351,7 @@ Thread* CreateThread(Handle& handle, const char* name, u32 entry_point, s32 prio
     thread->processor_id = processor_id;
     thread->wait_type = WAITTYPE_NONE;
     thread->wait_handle = 0;
+    thread->wait_address = 0;
     thread->name = name;
 
     return thread;
diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h
index 53a19d779..be7adface 100644
--- a/src/core/hle/kernel/thread.h
+++ b/src/core/hle/kernel/thread.h
@@ -5,6 +5,9 @@
 #pragma once
 
 #include "common/common_types.h"
+
+#include "core/mem_map.h"
+
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/result.h"
 
@@ -85,6 +88,14 @@ Handle GetCurrentThreadHandle();
  */
 void WaitCurrentThread(WaitType wait_type, Handle wait_handle=GetCurrentThreadHandle());
 
+/**
+ * Puts the current thread in the wait state for the given type
+ * @param wait_type Type of wait
+ * @param wait_handle Handle of Kernel object that we are waiting on, defaults to current thread
+ * @param wait_address Arbitration address used to resume from wait
+ */
+void WaitCurrentThread(WaitType wait_type, Handle wait_handle, VAddr wait_address);
+
 /// Put current thread in a wait state - on WaitSynchronization
 void WaitThread_Synchronization();
 
diff --git a/src/core/hle/service/cfg_u.cpp b/src/core/hle/service/cfg_u.cpp
index d6b586ea0..82bab5797 100644
--- a/src/core/hle/service/cfg_u.cpp
+++ b/src/core/hle/service/cfg_u.cpp
@@ -11,33 +11,38 @@
 
 namespace CFG_U {
 
-static const std::array<const char*, 187> country_codes = { 
-    nullptr, "JP", nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,    // 0-7
-    "AI", "AG", "AR", "AW", "BS", "BB", "BZ", "BO",                         // 8-15
-    "BR", "VG", "CA", "KY", "CL", "CO", "CR", "DM",                         // 16-23
-    "DO", "EC", "SV", "GF", "GD", "GP", "GT", "GY",                         // 24-31
-    "HT", "HN", "JM", "MQ", "MX", "MS", "AN", "NI",                         // 32-39
-    "PA", "PY", "PE", "KN", "LC", "VC", "SR", "TT",                         // 40-47
-    "TC", "US", "UY", "VI", "VE", nullptr, nullptr, nullptr,                // 48-55
-    nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, // 56-63
-    "AL", "AU", "AT", "BE", "BA", "BW", "BG", "HR",                         // 64-71
-    "CY", "CZ", "DK", "EE", "FI", "FR", "DE", "GR",                         // 72-79
-    "HU", "IS", "IE", "IT", "LV", "LS", "LI", "LT",                         // 80-87
-    "LU", "MK", "MT", "ME", "MZ", "NA", "NL", "NZ",                         // 88-95
-    "NO", "PL", "PT", "RO", "RU", "RS", "SK", "SI",                         // 96-103
-    "ZA", "ES", "SZ", "SE", "CH", "TR", "GB", "ZM",                         // 104-111
-    "ZW", "AZ", "MR", "ML", "NE", "TD", "SD", "ER",                         // 112-119
-    "DJ", "SO", "AD", "GI", "GG", "IM", "JE", "MC",                         // 120-127
-    "TW", nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,    // 128-135
-    "KR", nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,    // 136-143
-    "HK", "MO", nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,       // 144-151
-    "ID", "SG", "TH", "PH", "MY", nullptr, nullptr, nullptr,                // 152-159
-    "CN", nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,    // 160-167
-    "AE", "IN", "EG", "OM", "QA", "KW", "SA", "SY",                         // 168-175
-    "BH", "JO", nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,       // 176-183
-    "SM", "VA", "BM",                                                       // 184-186
+// TODO(Link Mauve): use a constexpr once MSVC starts supporting it.
+#define C(code) ((code)[0] | ((code)[1] << 8))
+
+static const std::array<u16, 187> country_codes = {
+    0,       C("JP"), 0,       0,       0,       0,       0,       0,       // 0-7
+    C("AI"), C("AG"), C("AR"), C("AW"), C("BS"), C("BB"), C("BZ"), C("BO"), // 8-15
+    C("BR"), C("VG"), C("CA"), C("KY"), C("CL"), C("CO"), C("CR"), C("DM"), // 16-23
+    C("DO"), C("EC"), C("SV"), C("GF"), C("GD"), C("GP"), C("GT"), C("GY"), // 24-31
+    C("HT"), C("HN"), C("JM"), C("MQ"), C("MX"), C("MS"), C("AN"), C("NI"), // 32-39
+    C("PA"), C("PY"), C("PE"), C("KN"), C("LC"), C("VC"), C("SR"), C("TT"), // 40-47
+    C("TC"), C("US"), C("UY"), C("VI"), C("VE"), 0,       0,       0,       // 48-55
+    0,       0,       0,       0,       0,       0,       0,       0,       // 56-63
+    C("AL"), C("AU"), C("AT"), C("BE"), C("BA"), C("BW"), C("BG"), C("HR"), // 64-71
+    C("CY"), C("CZ"), C("DK"), C("EE"), C("FI"), C("FR"), C("DE"), C("GR"), // 72-79
+    C("HU"), C("IS"), C("IE"), C("IT"), C("LV"), C("LS"), C("LI"), C("LT"), // 80-87
+    C("LU"), C("MK"), C("MT"), C("ME"), C("MZ"), C("NA"), C("NL"), C("NZ"), // 88-95
+    C("NO"), C("PL"), C("PT"), C("RO"), C("RU"), C("RS"), C("SK"), C("SI"), // 96-103
+    C("ZA"), C("ES"), C("SZ"), C("SE"), C("CH"), C("TR"), C("GB"), C("ZM"), // 104-111
+    C("ZW"), C("AZ"), C("MR"), C("ML"), C("NE"), C("TD"), C("SD"), C("ER"), // 112-119
+    C("DJ"), C("SO"), C("AD"), C("GI"), C("GG"), C("IM"), C("JE"), C("MC"), // 120-127
+    C("TW"), 0,       0,       0,       0,       0,       0,       0,       // 128-135
+    C("KR"), 0,       0,       0,       0,       0,       0,       0,       // 136-143
+    C("HK"), C("MO"), 0,       0,       0,       0,       0,       0,       // 144-151
+    C("ID"), C("SG"), C("TH"), C("PH"), C("MY"), 0,       0,       0,       // 152-159
+    C("CN"), 0,       0,       0,       0,       0,       0,       0,       // 160-167
+    C("AE"), C("IN"), C("EG"), C("OM"), C("QA"), C("KW"), C("SA"), C("SY"), // 168-175
+    C("BH"), C("JO"), 0,       0,       0,       0,       0,       0,       // 176-183
+    C("SM"), C("VA"), C("BM")                                               // 184-186
 };
 
+#undef C
+
 /**
  * CFG_User::GetCountryCodeString service function
  *  Inputs:
@@ -50,20 +55,14 @@ static void GetCountryCodeString(Service::Interface* self) {
     u32* cmd_buffer = Service::GetCommandBuffer();
     u32 country_code_id = cmd_buffer[1];
 
-    if (country_code_id >= country_codes.size()) {
+    if (country_code_id >= country_codes.size() || 0 == country_codes[country_code_id]) {
         ERROR_LOG(KERNEL, "requested country code id=%d is invalid", country_code_id);
         cmd_buffer[1] = ResultCode(ErrorDescription::NotFound, ErrorModule::Config, ErrorSummary::WrongArgument, ErrorLevel::Permanent).raw;
         return;
     }
-    
-    const char* code = country_codes[country_code_id];
-    if (code != nullptr) {
-        cmd_buffer[1] = 0;
-        cmd_buffer[2] = code[0] | (code[1] << 8);
-    } else {
-        cmd_buffer[1] = ResultCode(ErrorDescription::NotFound, ErrorModule::Config, ErrorSummary::WrongArgument, ErrorLevel::Permanent).raw;
-        DEBUG_LOG(KERNEL, "requested country code id=%d is not set", country_code_id);
-    }
+
+    cmd_buffer[1] = 0;
+    cmd_buffer[2] = country_codes[country_code_id];
 }
 
 /**
@@ -77,20 +76,25 @@ static void GetCountryCodeString(Service::Interface* self) {
 static void GetCountryCodeID(Service::Interface* self) {
     u32* cmd_buffer = Service::GetCommandBuffer();
     u16 country_code = cmd_buffer[1];
-    u16 country_code_id = -1;
+    u16 country_code_id = 0;
 
-    for (u32 i = 0; i < country_codes.size(); ++i) {
-        const char* code_string = country_codes[i];
+    // The following algorithm will fail if the first country code isn't 0.
+    _dbg_assert_(HLE, country_codes[0] == 0);
 
-        if (code_string != nullptr) {
-            u16 code = code_string[0] | (code_string[1] << 8);
-            if (code == country_code) {
-                country_code_id = i;
-                break;
-            }
+    for (size_t id = 0; id < country_codes.size(); ++id) {
+        if (country_codes[id] == country_code) {
+            country_code_id = id;
+            break;
         }
     }
 
+    if (0 == country_code_id) {
+        ERROR_LOG(KERNEL, "requested country code name=%c%c is invalid", country_code & 0xff, country_code >> 8);
+        cmd_buffer[1] = ResultCode(ErrorDescription::NotFound, ErrorModule::Config, ErrorSummary::WrongArgument, ErrorLevel::Permanent).raw;
+        cmd_buffer[2] = 0xFFFF;
+        return;
+    }
+
     cmd_buffer[1] = 0;
     cmd_buffer[2] = country_code_id;
 }
diff --git a/src/core/hle/service/gsp_gpu.cpp b/src/core/hle/service/gsp_gpu.cpp
index de1bd3f61..34eabac45 100644
--- a/src/core/hle/service/gsp_gpu.cpp
+++ b/src/core/hle/service/gsp_gpu.cpp
@@ -162,7 +162,8 @@ static void RegisterInterruptRelayQueue(Service::Interface* self) {
 
     _assert_msg_(GSP, (g_interrupt_event != 0), "handle is not valid!");
 
-    cmd_buff[2] = g_thread_id++; // ThreadID
+    cmd_buff[1] = 0x2A07; // Value verified by 3dmoo team, purpose unknown, but needed for GSP init
+    cmd_buff[2] = g_thread_id++; // Thread ID
     cmd_buff[4] = g_shared_memory; // GSP shared memory
 
     Kernel::SignalEvent(g_interrupt_event); // TODO(bunnei): Is this correct?
@@ -172,6 +173,7 @@ static void RegisterInterruptRelayQueue(Service::Interface* self) {
  * Signals that the specified interrupt type has occurred to userland code
  * @param interrupt_id ID of interrupt that is being signalled
  * @todo This should probably take a thread_id parameter and only signal this thread?
+ * @todo This probably does not belong in the GSP module, instead move to video_core
  */
 void SignalInterrupt(InterruptId interrupt_id) {
     if (0 == g_interrupt_event) {
@@ -210,6 +212,7 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         memcpy(Memory::GetPointer(command.dma_request.dest_address),
                Memory::GetPointer(command.dma_request.source_address),
                command.dma_request.size);
+        SignalInterrupt(InterruptId::DMA);
         break;
 
     // ctrulib homebrew sends all relevant command list data with this command,
@@ -218,13 +221,13 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
     case CommandId::SET_COMMAND_LIST_LAST:
     {
         auto& params = command.set_command_list_last;
+
         WriteGPURegister(GPU_REG_INDEX(command_processor_config.address), Memory::VirtualToPhysicalAddress(params.address) >> 3);
-        WriteGPURegister(GPU_REG_INDEX(command_processor_config.size), params.size >> 3);
+        WriteGPURegister(GPU_REG_INDEX(command_processor_config.size), params.size);
 
         // TODO: Not sure if we are supposed to always write this .. seems to trigger processing though
         WriteGPURegister(GPU_REG_INDEX(command_processor_config.trigger), 1);
 
-        SignalInterrupt(InterruptId::P3D);
         break;
     }
 
@@ -242,6 +245,8 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].address_end), Memory::VirtualToPhysicalAddress(params.end2) >> 3);
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].size), params.end2 - params.start2);
         WriteGPURegister(GPU_REG_INDEX(memory_fill_config[1].value), params.value2);
+
+        SignalInterrupt(InterruptId::PSC0);
         break;
     }
 
@@ -255,14 +260,9 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
         WriteGPURegister(GPU_REG_INDEX(display_transfer_config.flags), params.flags);
         WriteGPURegister(GPU_REG_INDEX(display_transfer_config.trigger), 1);
 
-        // TODO(bunnei): Signalling all of these interrupts here is totally wrong, but it seems to
-        // work well enough for running demos. Need to figure out how these all work and trigger
-        // them correctly.
-        SignalInterrupt(InterruptId::PSC0);
+        // TODO(bunnei): Determine if these interrupts should be signalled here.
         SignalInterrupt(InterruptId::PSC1);
         SignalInterrupt(InterruptId::PPF);
-        SignalInterrupt(InterruptId::P3D);
-        SignalInterrupt(InterruptId::DMA);
 
         // Update framebuffer information if requested
         for (int screen_id = 0; screen_id < 2; ++screen_id) {
@@ -305,6 +305,8 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
 /// This triggers handling of the GX command written to the command buffer in shared memory.
 static void TriggerCmdReqQueue(Service::Interface* self) {
 
+    DEBUG_LOG(GSP, "called");
+
     // Iterate through each thread's command queue...
     for (unsigned thread_id = 0; thread_id < 0x4; ++thread_id) {
         CommandBuffer* command_buffer = (CommandBuffer*)GetCommandBuffer(thread_id);
@@ -320,6 +322,9 @@ static void TriggerCmdReqQueue(Service::Interface* self) {
             command_buffer->number_commands = command_buffer->number_commands - 1;
         }
     }
+
+    u32* cmd_buff = Service::GetCommandBuffer();
+    cmd_buff[1] = 0; // No error
 }
 
 const Interface::FunctionInfo FunctionTable[] = {
diff --git a/src/core/hle/service/service.h b/src/core/hle/service/service.h
index 20e7fb4d3..3a7d6c469 100644
--- a/src/core/hle/service/service.h
+++ b/src/core/hle/service/service.h
@@ -10,6 +10,7 @@
 #include <string>
 
 #include "common/common.h"
+#include "common/string_util.h"
 #include "core/mem_map.h"
 
 #include "core/hle/kernel/kernel.h"
@@ -79,21 +80,20 @@ public:
         u32* cmd_buff = GetCommandBuffer();
         auto itr = m_functions.find(cmd_buff[0]);
 
-        if (itr == m_functions.end()) {
-            ERROR_LOG(OSHLE, "unknown/unimplemented function: port=%s, command=0x%08X",
-                GetPortName().c_str(), cmd_buff[0]);
+        if (itr == m_functions.end() || itr->second.func == nullptr) {
+            // Number of params == bits 0-5 + bits 6-11
+            int num_params = (cmd_buff[0] & 0x3F) + ((cmd_buff[0] >> 6) & 0x3F);
 
-            // TODO(bunnei): Hack - ignore error
-            u32* cmd_buff = Service::GetCommandBuffer();
-            cmd_buff[1] = 0;
-            return MakeResult<bool>(false);
-        }
-        if (itr->second.func == nullptr) {
-            ERROR_LOG(OSHLE, "unimplemented function: port=%s, name=%s",
-                GetPortName().c_str(), itr->second.name.c_str());
+            std::string error = "unknown/unimplemented function '%s': port=%s";
+            for (int i = 1; i <= num_params; ++i) {
+                error += Common::StringFromFormat(", cmd_buff[%i]=%u", i, cmd_buff[i]);
+            }
+
+            std::string name = (itr == m_functions.end()) ? Common::StringFromFormat("0x%08X", cmd_buff[0]) : itr->second.name;
+
+            ERROR_LOG(OSHLE, error.c_str(), name.c_str(), GetPortName().c_str());
 
             // TODO(bunnei): Hack - ignore error
-            u32* cmd_buff = Service::GetCommandBuffer();
             cmd_buff[1] = 0;
             return MakeResult<bool>(false);
         }
diff --git a/src/core/hw/gpu.cpp b/src/core/hw/gpu.cpp
index af5e1b39b..77557e582 100644
--- a/src/core/hw/gpu.cpp
+++ b/src/core/hw/gpu.cpp
@@ -154,8 +154,7 @@ inline void Write(u32 addr, const T data) {
         if (config.trigger & 1)
         {
             u32* buffer = (u32*)Memory::GetPointer(Memory::PhysicalToVirtualAddress(config.GetPhysicalAddress()));
-            u32 size = config.size << 3;
-            Pica::CommandProcessor::ProcessCommandList(buffer, size);
+            Pica::CommandProcessor::ProcessCommandList(buffer, config.size);
         }
         break;
     }
diff --git a/src/core/hw/gpu.h b/src/core/hw/gpu.h
index 3fa7b9ccf..86cd5e680 100644
--- a/src/core/hw/gpu.h
+++ b/src/core/hw/gpu.h
@@ -169,7 +169,7 @@ struct Regs {
     INSERT_PADDING_WORDS(0x331);
 
     struct {
-        // command list size
+        // command list size (in bytes)
         u32 size;
 
         INSERT_PADDING_WORDS(0x1);
diff --git a/src/core/hw/hw.cpp b/src/core/hw/hw.cpp
index ea001673a..73a4f1e53 100644
--- a/src/core/hw/hw.cpp
+++ b/src/core/hw/hw.cpp
@@ -6,7 +6,6 @@
 
 #include "core/hw/hw.h"
 #include "core/hw/gpu.h"
-#include "core/hw/ndma.h"
 
 namespace HW {
 
@@ -40,11 +39,6 @@ template <typename T>
 inline void Read(T &var, const u32 addr) {
     switch (addr & 0xFFFFF000) {
 
-    // TODO(bunnei): What is the virtual address of NDMA?
-    // case VADDR_NDMA:
-    //     NDMA::Read(var, addr);
-    //     break;
-
     case VADDR_GPU:
         GPU::Read(var, addr);
         break;
@@ -58,11 +52,6 @@ template <typename T>
 inline void Write(u32 addr, const T data) {
     switch (addr & 0xFFFFF000) {
 
-    // TODO(bunnei): What is the virtual address of NDMA?
-    // case VADDR_NDMA
-    //     NDMA::Write(addr, data);
-    //     break;
-
     case VADDR_GPU:
         GPU::Write(addr, data);
         break;
@@ -87,13 +76,11 @@ template void Write<u8>(u32 addr, const u8 data);
 /// Update hardware
 void Update() {
     GPU::Update();
-    NDMA::Update();
 }
 
 /// Initialize hardware
 void Init() {
     GPU::Init();
-    NDMA::Init();
     NOTICE_LOG(HW, "initialized OK");
 }
 
diff --git a/src/core/hw/ndma.cpp b/src/core/hw/ndma.cpp
deleted file mode 100644
index 593e5de30..000000000
--- a/src/core/hw/ndma.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2
-// Refer to the license.txt file included.
-
-#include "common/common_types.h"
-
-#include "core/hw/ndma.h"
-
-namespace NDMA {
-
-template <typename T>
-inline void Read(T &var, const u32 addr) {
-    ERROR_LOG(NDMA, "unknown Read%lu @ 0x%08X", sizeof(var) * 8, addr);
-}
-
-template <typename T>
-inline void Write(u32 addr, const T data) {
-    ERROR_LOG(NDMA, "unknown Write%lu 0x%08X @ 0x%08X", sizeof(data) * 8, (u32)data, addr);
-}
-
-// Explicitly instantiate template functions because we aren't defining this in the header:
-
-template void Read<u64>(u64 &var, const u32 addr);
-template void Read<u32>(u32 &var, const u32 addr);
-template void Read<u16>(u16 &var, const u32 addr);
-template void Read<u8>(u8 &var, const u32 addr);
-
-template void Write<u64>(u32 addr, const u64 data);
-template void Write<u32>(u32 addr, const u32 data);
-template void Write<u16>(u32 addr, const u16 data);
-template void Write<u8>(u32 addr, const u8 data);
-
-/// Update hardware
-void Update() {
-}
-
-/// Initialize hardware
-void Init() {
-    NOTICE_LOG(GPU, "initialized OK");
-}
-
-/// Shutdown hardware
-void Shutdown() {
-    NOTICE_LOG(GPU, "shutdown OK");
-}
-
-} // namespace
diff --git a/src/core/hw/ndma.h b/src/core/hw/ndma.h
deleted file mode 100644
index d8fa3d40b..000000000
--- a/src/core/hw/ndma.h
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include "common/common_types.h"
-
-namespace NDMA {
-
-template <typename T>
-inline void Read(T &var, const u32 addr);
-
-template <typename T>
-inline void Write(u32 addr, const T data);
-
-/// Update hardware
-void Update();
-
-/// Initialize hardware
-void Init();
-
-/// Shutdown hardware
-void Shutdown();
-
-} // namespace
diff --git a/src/core/loader/3dsx.cpp b/src/core/loader/3dsx.cpp
new file mode 100644
index 000000000..7ef146359
--- /dev/null
+++ b/src/core/loader/3dsx.cpp
@@ -0,0 +1,236 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <vector>
+
+#include "core/file_sys/archive_romfs.h"
+#include "core/loader/elf.h"
+#include "core/loader/ncch.h"
+#include "core/hle/kernel/archive.h"
+#include "core/mem_map.h"
+
+#include "3dsx.h"
+
+
+namespace Loader {
+
+
+/** 
+ * File layout:
+ * - File header
+ * - Code, rodata and data relocation table headers
+ * - Code segment
+ * - Rodata segment
+ * - Loadable (non-BSS) part of the data segment
+ * - Code relocation table
+ * - Rodata relocation table
+ * - Data relocation table
+ *
+ * Memory layout before relocations are applied:
+ * [0..codeSegSize)             -> code segment
+ * [codeSegSize..rodataSegSize) -> rodata segment
+ * [rodataSegSize..dataSegSize) -> data segment
+ *
+ * Memory layout after relocations are applied: well, however the loader sets it up :)
+ * The entrypoint is always the start of the code segment.
+ * The BSS section must be cleared manually by the application.
+ */
+enum THREEDSX_Error {
+    ERROR_NONE = 0,
+    ERROR_READ = 1,
+    ERROR_FILE = 2,
+    ERROR_ALLOC = 3
+};
+static const u32 RELOCBUFSIZE = 512;
+
+// File header
+static const u32 THREEDSX_MAGIC = 0x58534433; // '3DSX'
+#pragma pack(1)
+struct THREEDSX_Header
+{
+    u32 magic;
+    u16 header_size, reloc_hdr_size;
+    u32 format_ver;
+    u32 flags;
+
+    // Sizes of the code, rodata and data segments +
+    // size of the BSS section (uninitialized latter half of the data segment)
+    u32 code_seg_size, rodata_seg_size, data_seg_size, bss_size;
+};
+
+// Relocation header: all fields (even extra unknown fields) are guaranteed to be relocation counts.
+struct THREEDSX_RelocHdr
+{
+    // # of absolute relocations (that is, fix address to post-relocation memory layout)
+    u32 cross_segment_absolute; 
+    // # of cross-segment relative relocations (that is, 32bit signed offsets that need to be patched)
+    u32 cross_segment_relative; 
+    // more?
+
+    // Relocations are written in this order:
+    // - Absolute relocations
+    // - Relative relocations
+};
+
+// Relocation entry: from the current pointer, skip X words and patch Y words
+struct THREEDSX_Reloc
+{
+    u16 skip, patch;
+};
+#pragma pack()
+
+struct THREEloadinfo
+{
+    u8* seg_ptrs[3]; // code, rodata & data
+    u32 seg_addrs[3];
+    u32 seg_sizes[3];
+};
+
+class THREEDSXReader {
+public:
+     static int Load3DSXFile(const std::string& filename, u32 base_addr);
+};
+
+static u32 TranslateAddr(u32 addr, THREEloadinfo *loadinfo, u32* offsets)
+{
+    if (addr < offsets[0])
+        return loadinfo->seg_addrs[0] + addr;
+    if (addr < offsets[1])
+        return loadinfo->seg_addrs[1] + addr - offsets[0];
+    return loadinfo->seg_addrs[2] + addr - offsets[1];
+}
+
+int THREEDSXReader::Load3DSXFile(const std::string& filename, u32 base_addr)
+{
+    FileUtil::IOFile file(filename, "rb");
+    if (!file.IsOpen()) {
+        return ERROR_FILE;
+    }
+    THREEDSX_Header hdr;
+    if (file.ReadBytes(&hdr, sizeof(hdr)) != sizeof(hdr))
+        return ERROR_READ;
+
+    THREEloadinfo loadinfo;
+    //loadinfo segments must be a multiple of 0x1000
+    loadinfo.seg_sizes[0] = (hdr.code_seg_size + 0xFFF) &~0xFFF;
+    loadinfo.seg_sizes[1] = (hdr.rodata_seg_size + 0xFFF) &~0xFFF;
+    loadinfo.seg_sizes[2] = (hdr.data_seg_size + 0xFFF) &~0xFFF;
+    u32 offsets[2] = { loadinfo.seg_sizes[0], loadinfo.seg_sizes[0] + loadinfo.seg_sizes[1] };
+    u32 data_load_size = (hdr.data_seg_size - hdr.bss_size + 0xFFF) &~0xFFF;
+    u32 bss_load_size = loadinfo.seg_sizes[2] - data_load_size;
+    u32 n_reloc_tables = hdr.reloc_hdr_size / 4;
+    std::vector<u8> all_mem(loadinfo.seg_sizes[0] + loadinfo.seg_sizes[1] + loadinfo.seg_sizes[2] + 3 * n_reloc_tables);
+
+    loadinfo.seg_addrs[0] = base_addr;
+    loadinfo.seg_addrs[1] = loadinfo.seg_addrs[0] + loadinfo.seg_sizes[0];
+    loadinfo.seg_addrs[2] = loadinfo.seg_addrs[1] + loadinfo.seg_sizes[1];
+    loadinfo.seg_ptrs[0] = &all_mem[0];
+    loadinfo.seg_ptrs[1] = loadinfo.seg_ptrs[0] + loadinfo.seg_sizes[0];
+    loadinfo.seg_ptrs[2] = loadinfo.seg_ptrs[1] + loadinfo.seg_sizes[1];
+
+    // Skip header for future compatibility
+    file.Seek(hdr.header_size, SEEK_SET);
+
+    // Read the relocation headers
+    u32* relocs = (u32*)(loadinfo.seg_ptrs[2] + hdr.data_seg_size);
+
+    for (u32 current_segment = 0; current_segment < 3; current_segment++) {
+        if (file.ReadBytes(&relocs[current_segment*n_reloc_tables], n_reloc_tables * 4) != n_reloc_tables * 4)
+            return ERROR_READ;
+    }
+
+    // Read the segments
+    if (file.ReadBytes(loadinfo.seg_ptrs[0], hdr.code_seg_size) != hdr.code_seg_size)
+        return ERROR_READ;
+    if (file.ReadBytes(loadinfo.seg_ptrs[1], hdr.rodata_seg_size) != hdr.rodata_seg_size)
+        return ERROR_READ;
+    if (file.ReadBytes(loadinfo.seg_ptrs[2], hdr.data_seg_size - hdr.bss_size) != hdr.data_seg_size - hdr.bss_size)
+        return ERROR_READ;
+
+    // BSS clear
+    memset((char*)loadinfo.seg_ptrs[2] + hdr.data_seg_size - hdr.bss_size, 0, hdr.bss_size);
+
+    // Relocate the segments
+    for (u32 current_segment = 0; current_segment < 3; current_segment++) {
+        for (u32 current_segment_reloc_table = 0; current_segment_reloc_table < n_reloc_tables; current_segment_reloc_table++) {
+            u32 n_relocs = relocs[current_segment*n_reloc_tables + current_segment_reloc_table];
+            if (current_segment_reloc_table >= 2) {
+                // We are not using this table - ignore it because we don't know what it dose
+                file.Seek(n_relocs*sizeof(THREEDSX_Reloc), SEEK_CUR);
+                continue;
+            }
+            static THREEDSX_Reloc reloc_table[RELOCBUFSIZE];
+
+            u32* pos = (u32*)loadinfo.seg_ptrs[current_segment];
+            u32* end_pos = pos + (loadinfo.seg_sizes[current_segment] / 4);
+
+            while (n_relocs) {
+                u32 remaining = std::min(RELOCBUFSIZE, n_relocs);
+                n_relocs -= remaining;
+
+                if (file.ReadBytes(reloc_table, remaining*sizeof(THREEDSX_Reloc)) != remaining*sizeof(THREEDSX_Reloc))
+                    return ERROR_READ;
+
+                for (u32 current_inprogress = 0; current_inprogress < remaining && pos < end_pos; current_inprogress++) {
+                    DEBUG_LOG(LOADER, "(t=%d,skip=%u,patch=%u)\n",
+                        current_segment_reloc_table, (u32)reloc_table[current_inprogress].skip, (u32)reloc_table[current_inprogress].patch);
+                    pos += reloc_table[current_inprogress].skip;
+                    s32 num_patches = reloc_table[current_inprogress].patch;
+                    while (0 < num_patches && pos < end_pos) {
+                        u32 in_addr = (char*)pos - (char*)&all_mem[0];
+                        u32 addr = TranslateAddr(*pos, &loadinfo, offsets);
+                        DEBUG_LOG(LOADER, "Patching %08X <-- rel(%08X,%d) (%08X)\n",
+                            base_addr + in_addr, addr, current_segment_reloc_table, *pos);
+                        switch (current_segment_reloc_table) {
+                        case 0: *pos = (addr); break;
+                        case 1: *pos = (addr - in_addr); break;
+                        default: break; //this should never happen
+                        }
+                        pos++;
+                        num_patches--;
+                    }
+                }
+            }
+        }
+    }
+
+    // Write the data
+    memcpy(Memory::GetPointer(base_addr), &all_mem[0], loadinfo.seg_sizes[0] + loadinfo.seg_sizes[1] + loadinfo.seg_sizes[2]);
+
+    DEBUG_LOG(LOADER, "CODE:   %u pages\n", loadinfo.seg_sizes[0] / 0x1000);
+    DEBUG_LOG(LOADER, "RODATA: %u pages\n", loadinfo.seg_sizes[1] / 0x1000);
+    DEBUG_LOG(LOADER, "DATA:   %u pages\n", data_load_size / 0x1000);
+    DEBUG_LOG(LOADER, "BSS:    %u pages\n", bss_load_size / 0x1000);
+
+    return ERROR_NONE;
+}
+
+    /// AppLoader_DSX constructor
+    AppLoader_THREEDSX::AppLoader_THREEDSX(const std::string& filename) : filename(filename) {
+    }
+
+    /// AppLoader_DSX destructor
+    AppLoader_THREEDSX::~AppLoader_THREEDSX() {
+    }
+
+    /**
+    * Loads a 3DSX file
+    * @return Success on success, otherwise Error
+    */
+    ResultStatus AppLoader_THREEDSX::Load() {
+        INFO_LOG(LOADER, "Loading 3DSX file %s...", filename.c_str());
+        FileUtil::IOFile file(filename, "rb");
+        if (file.IsOpen()) {
+
+            THREEDSXReader reader;
+            reader.Load3DSXFile(filename, 0x00100000);
+            Kernel::LoadExec(0x00100000);
+        } else {
+            return ResultStatus::Error;
+        }
+        return ResultStatus::Success;
+    }
+
+} // namespace Loader
diff --git a/src/core/loader/3dsx.h b/src/core/loader/3dsx.h
new file mode 100644
index 000000000..848d3ef8a
--- /dev/null
+++ b/src/core/loader/3dsx.h
@@ -0,0 +1,32 @@
+// Copyright 2014 Dolphin Emulator Project / Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "core/loader/loader.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Loader namespace
+
+namespace Loader {
+
+/// Loads an 3DSX file
+class AppLoader_THREEDSX final : public AppLoader {
+public:
+    AppLoader_THREEDSX(const std::string& filename);
+    ~AppLoader_THREEDSX() override;
+
+    /**
+     * Load the bootable file
+     * @return ResultStatus result of function
+     */
+    ResultStatus Load() override;
+
+private:
+    std::string filename;
+    bool        is_loaded;
+};
+
+} // namespace Loader
diff --git a/src/core/loader/loader.cpp b/src/core/loader/loader.cpp
index a268e021a..174397b05 100644
--- a/src/core/loader/loader.cpp
+++ b/src/core/loader/loader.cpp
@@ -5,6 +5,7 @@
 #include <memory>
 
 #include "core/file_sys/archive_romfs.h"
+#include "core/loader/3dsx.h"
 #include "core/loader/elf.h"
 #include "core/loader/ncch.h"
 #include "core/hle/kernel/archive.h"
@@ -42,6 +43,8 @@ FileType IdentifyFile(const std::string &filename) {
         return FileType::CCI;
     } else if (extension == ".bin") {
         return FileType::BIN;
+    } else if (extension == ".3dsx") {
+        return FileType::THREEDSX;
     }
     return FileType::Unknown;
 }
@@ -56,6 +59,10 @@ ResultStatus LoadFile(const std::string& filename) {
 
     switch (IdentifyFile(filename)) {
 
+    //3DSX file format...
+    case FileType::THREEDSX:
+        return AppLoader_THREEDSX(filename).Load();
+
     // Standard ELF file format...
     case FileType::ELF:
         return AppLoader_ELF(filename).Load();
diff --git a/src/core/loader/loader.h b/src/core/loader/loader.h
index 68f843005..0f836d285 100644
--- a/src/core/loader/loader.h
+++ b/src/core/loader/loader.h
@@ -22,6 +22,7 @@ enum class FileType {
     CIA,
     ELF,
     BIN,
+    THREEDSX, //3DSX
 };
 
 /// Return type for functions in Loader namespace
diff --git a/src/core/mem_map.h b/src/core/mem_map.h
index c9529f84c..f17afb60d 100644
--- a/src/core/mem_map.h
+++ b/src/core/mem_map.h
@@ -26,12 +26,10 @@ enum : u32 {
     FCRAM_PADDR_END         = (FCRAM_PADDR + FCRAM_SIZE),       ///< FCRAM end of physical space
     FCRAM_VADDR             = 0x08000000,                       ///< FCRAM virtual address
     FCRAM_VADDR_END         = (FCRAM_VADDR + FCRAM_SIZE),       ///< FCRAM end of virtual space
-    FCRAM_MASK              = (FCRAM_SIZE - 1),                 ///< FCRAM mask
 
     SHARED_MEMORY_SIZE      = 0x04000000,   ///< Shared memory size
     SHARED_MEMORY_VADDR     = 0x10000000,   ///< Shared memory
     SHARED_MEMORY_VADDR_END = (SHARED_MEMORY_VADDR + SHARED_MEMORY_SIZE),
-    SHARED_MEMORY_MASK      = (SHARED_MEMORY_SIZE - 1),
 
     DSP_MEMORY_SIZE         = 0x00080000,   ///< DSP memory size
     DSP_MEMORY_VADDR        = 0x1FF00000,   ///< DSP memory virtual address
@@ -39,37 +37,31 @@ enum : u32 {
     CONFIG_MEMORY_SIZE      = 0x00001000,   ///< Configuration memory size
     CONFIG_MEMORY_VADDR     = 0x1FF80000,   ///< Configuration memory virtual address
     CONFIG_MEMORY_VADDR_END = (CONFIG_MEMORY_VADDR + CONFIG_MEMORY_SIZE),
-    CONFIG_MEMORY_MASK      = (CONFIG_MEMORY_SIZE - 1),
 
     KERNEL_MEMORY_SIZE      = 0x00001000,   ///< Kernel memory size
     KERNEL_MEMORY_VADDR     = 0xFFFF0000,   ///< Kernel memory where the kthread objects etc are
     KERNEL_MEMORY_VADDR_END = (KERNEL_MEMORY_VADDR + KERNEL_MEMORY_SIZE),
-    KERNEL_MEMORY_MASK      = (KERNEL_MEMORY_SIZE - 1),
 
     EXEFS_CODE_SIZE         = 0x03F00000,
     EXEFS_CODE_VADDR        = 0x00100000,   ///< ExeFS:/.code is loaded here
     EXEFS_CODE_VADDR_END    = (EXEFS_CODE_VADDR + EXEFS_CODE_SIZE),
-    EXEFS_CODE_MASK         = 0x03FFFFFF,
 
     // Region of FCRAM used by system
     SYSTEM_MEMORY_SIZE      = 0x02C00000,   ///< 44MB
     SYSTEM_MEMORY_VADDR     = 0x04000000,
     SYSTEM_MEMORY_VADDR_END = (SYSTEM_MEMORY_VADDR + SYSTEM_MEMORY_SIZE),
-    SYSTEM_MEMORY_MASK      = 0x03FFFFFF,
 
     HEAP_SIZE               = FCRAM_SIZE,   ///< Application heap size
     //HEAP_PADDR              = HEAP_GSP_SIZE,
     //HEAP_PADDR_END          = (HEAP_PADDR + HEAP_SIZE),
     HEAP_VADDR              = 0x08000000,
     HEAP_VADDR_END          = (HEAP_VADDR + HEAP_SIZE),
-    HEAP_MASK               = (HEAP_SIZE - 1),
 
     HEAP_GSP_SIZE           = 0x02000000,   ///< GSP heap size... TODO: Define correctly?
     HEAP_GSP_VADDR          = 0x14000000,
     HEAP_GSP_VADDR_END      = (HEAP_GSP_VADDR + HEAP_GSP_SIZE),
     HEAP_GSP_PADDR          = 0x00000000,
     HEAP_GSP_PADDR_END      = (HEAP_GSP_PADDR + HEAP_GSP_SIZE),
-    HEAP_GSP_MASK           = (HEAP_GSP_SIZE - 1),
 
     HARDWARE_IO_SIZE        = 0x01000000,
     HARDWARE_IO_PADDR       = 0x10000000,                       ///< IO physical address start
@@ -82,12 +74,10 @@ enum : u32 {
     VRAM_VADDR              = 0x1F000000,
     VRAM_PADDR_END          = (VRAM_PADDR + VRAM_SIZE),
     VRAM_VADDR_END          = (VRAM_VADDR + VRAM_SIZE),
-    VRAM_MASK               = 0x007FFFFF,
 
     SCRATCHPAD_SIZE         = 0x00004000,   ///< Typical stack size - TODO: Read from exheader
     SCRATCHPAD_VADDR_END    = 0x10000000,
     SCRATCHPAD_VADDR        = (SCRATCHPAD_VADDR_END - SCRATCHPAD_SIZE), ///< Stack space
-    SCRATCHPAD_MASK         = (SCRATCHPAD_SIZE - 1),            ///< Scratchpad memory mask
 };
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/src/core/mem_map_funcs.cpp b/src/core/mem_map_funcs.cpp
index e8747840c..1887bcedb 100644
--- a/src/core/mem_map_funcs.cpp
+++ b/src/core/mem_map_funcs.cpp
@@ -56,7 +56,7 @@ inline void Read(T &var, const VAddr vaddr) {
 
     // Kernel memory command buffer
     if (vaddr >= KERNEL_MEMORY_VADDR && vaddr < KERNEL_MEMORY_VADDR_END) {
-        var = *((const T*)&g_kernel_mem[vaddr & KERNEL_MEMORY_MASK]);
+        var = *((const T*)&g_kernel_mem[vaddr - KERNEL_MEMORY_VADDR]);
 
     // Hardware I/O register reads
     // 0x10XXXXXX- is physical address space, 0x1EXXXXXX is virtual address space
@@ -65,23 +65,23 @@ inline void Read(T &var, const VAddr vaddr) {
 
     // ExeFS:/.code is loaded here
     } else if ((vaddr >= EXEFS_CODE_VADDR)  && (vaddr < EXEFS_CODE_VADDR_END)) {
-        var = *((const T*)&g_exefs_code[vaddr & EXEFS_CODE_MASK]);
+        var = *((const T*)&g_exefs_code[vaddr - EXEFS_CODE_VADDR]);
 
     // FCRAM - GSP heap
     } else if ((vaddr >= HEAP_GSP_VADDR) && (vaddr < HEAP_GSP_VADDR_END)) {
-        var = *((const T*)&g_heap_gsp[vaddr & HEAP_GSP_MASK]);
+        var = *((const T*)&g_heap_gsp[vaddr - HEAP_GSP_VADDR]);
 
     // FCRAM - application heap
     } else if ((vaddr >= HEAP_VADDR)  && (vaddr < HEAP_VADDR_END)) {
-        var = *((const T*)&g_heap[vaddr & HEAP_MASK]);
+        var = *((const T*)&g_heap[vaddr - HEAP_VADDR]);
 
     // Shared memory
     } else if ((vaddr >= SHARED_MEMORY_VADDR)  && (vaddr < SHARED_MEMORY_VADDR_END)) {
-        var = *((const T*)&g_shared_mem[vaddr & SHARED_MEMORY_MASK]);
+        var = *((const T*)&g_shared_mem[vaddr - SHARED_MEMORY_VADDR]);
 
     // System memory
     } else if ((vaddr >= SYSTEM_MEMORY_VADDR)  && (vaddr < SYSTEM_MEMORY_VADDR_END)) {
-        var = *((const T*)&g_system_mem[vaddr & SYSTEM_MEMORY_MASK]);
+        var = *((const T*)&g_system_mem[vaddr - SYSTEM_MEMORY_VADDR]);
 
     // Config memory
     } else if ((vaddr >= CONFIG_MEMORY_VADDR)  && (vaddr < CONFIG_MEMORY_VADDR_END)) {
@@ -89,7 +89,7 @@ inline void Read(T &var, const VAddr vaddr) {
 
     // VRAM
     } else if ((vaddr >= VRAM_VADDR)  && (vaddr < VRAM_VADDR_END)) {
-        var = *((const T*)&g_vram[vaddr & VRAM_MASK]);
+        var = *((const T*)&g_vram[vaddr - VRAM_VADDR]);
 
     } else {
         ERROR_LOG(MEMMAP, "unknown Read%lu @ 0x%08X", sizeof(var) * 8, vaddr);
@@ -101,7 +101,7 @@ inline void Write(const VAddr vaddr, const T data) {
 
     // Kernel memory command buffer
     if (vaddr >= KERNEL_MEMORY_VADDR && vaddr < KERNEL_MEMORY_VADDR_END) {
-        *(T*)&g_kernel_mem[vaddr & KERNEL_MEMORY_MASK] = data;
+        *(T*)&g_kernel_mem[vaddr - KERNEL_MEMORY_VADDR] = data;
 
     // Hardware I/O register writes
     // 0x10XXXXXX- is physical address space, 0x1EXXXXXX is virtual address space
@@ -110,27 +110,27 @@ inline void Write(const VAddr vaddr, const T data) {
 
     // ExeFS:/.code is loaded here
     } else if ((vaddr >= EXEFS_CODE_VADDR)  && (vaddr < EXEFS_CODE_VADDR_END)) {
-        *(T*)&g_exefs_code[vaddr & EXEFS_CODE_MASK] = data;
+        *(T*)&g_exefs_code[vaddr - EXEFS_CODE_VADDR] = data;
 
     // FCRAM - GSP heap
     } else if ((vaddr >= HEAP_GSP_VADDR)  && (vaddr < HEAP_GSP_VADDR_END)) {
-        *(T*)&g_heap_gsp[vaddr & HEAP_GSP_MASK] = data;
+        *(T*)&g_heap_gsp[vaddr - HEAP_GSP_VADDR] = data;
 
     // FCRAM - application heap
     } else if ((vaddr >= HEAP_VADDR)  && (vaddr < HEAP_VADDR_END)) {
-        *(T*)&g_heap[vaddr & HEAP_MASK] = data;
+        *(T*)&g_heap[vaddr - HEAP_VADDR] = data;
 
     // Shared memory
     } else if ((vaddr >= SHARED_MEMORY_VADDR)  && (vaddr < SHARED_MEMORY_VADDR_END)) {
-        *(T*)&g_shared_mem[vaddr & SHARED_MEMORY_MASK] = data;
+        *(T*)&g_shared_mem[vaddr - SHARED_MEMORY_VADDR] = data;
 
     // System memory
     } else if ((vaddr >= SYSTEM_MEMORY_VADDR)  && (vaddr < SYSTEM_MEMORY_VADDR_END)) {
-         *(T*)&g_system_mem[vaddr & SYSTEM_MEMORY_MASK] = data;
+        *(T*)&g_system_mem[vaddr - SYSTEM_MEMORY_VADDR] = data;
 
     // VRAM
     } else if ((vaddr >= VRAM_VADDR)  && (vaddr < VRAM_VADDR_END)) {
-        *(T*)&g_vram[vaddr & VRAM_MASK] = data;
+        *(T*)&g_vram[vaddr - VRAM_VADDR] = data;
 
     //} else if ((vaddr & 0xFFF00000) == 0x1FF00000) {
     //    _assert_msg_(MEMMAP, false, "umimplemented write to DSP memory");
@@ -148,31 +148,31 @@ inline void Write(const VAddr vaddr, const T data) {
 u8 *GetPointer(const VAddr vaddr) {
     // Kernel memory command buffer
     if (vaddr >= KERNEL_MEMORY_VADDR && vaddr < KERNEL_MEMORY_VADDR_END) {
-        return g_kernel_mem + (vaddr & KERNEL_MEMORY_MASK);
+        return g_kernel_mem + (vaddr - KERNEL_MEMORY_VADDR);
 
     // ExeFS:/.code is loaded here
     } else if ((vaddr >= EXEFS_CODE_VADDR)  && (vaddr < EXEFS_CODE_VADDR_END)) {
-        return g_exefs_code + (vaddr & EXEFS_CODE_MASK);
+        return g_exefs_code + (vaddr - EXEFS_CODE_VADDR);
 
     // FCRAM - GSP heap
     } else if ((vaddr >= HEAP_GSP_VADDR)  && (vaddr < HEAP_GSP_VADDR_END)) {
-        return g_heap_gsp + (vaddr & HEAP_GSP_MASK);
+        return g_heap_gsp + (vaddr - HEAP_GSP_VADDR);
 
     // FCRAM - application heap
     } else if ((vaddr >= HEAP_VADDR)  && (vaddr < HEAP_VADDR_END)) {
-        return g_heap + (vaddr & HEAP_MASK);
+        return g_heap + (vaddr - HEAP_VADDR);
 
     // Shared memory
     } else if ((vaddr >= SHARED_MEMORY_VADDR)  && (vaddr < SHARED_MEMORY_VADDR_END)) {
-        return g_shared_mem + (vaddr & SHARED_MEMORY_MASK);
+        return g_shared_mem + (vaddr - SHARED_MEMORY_VADDR);
 
     // System memory
     } else if ((vaddr >= SYSTEM_MEMORY_VADDR)  && (vaddr < SYSTEM_MEMORY_VADDR_END)) {
-         return g_system_mem + (vaddr & SYSTEM_MEMORY_MASK);
+        return g_system_mem + (vaddr - SYSTEM_MEMORY_VADDR);
 
     // VRAM
     } else if ((vaddr >= VRAM_VADDR)  && (vaddr < VRAM_VADDR_END)) {
-        return g_vram + (vaddr & VRAM_MASK);
+        return g_vram + (vaddr - VRAM_VADDR);
 
     } else {
         ERROR_LOG(MEMMAP, "unknown GetPointer @ 0x%08x", vaddr);
diff --git a/src/video_core/command_processor.cpp b/src/video_core/command_processor.cpp
index 8a6ba2560..431139cc2 100644
--- a/src/video_core/command_processor.cpp
+++ b/src/video_core/command_processor.cpp
@@ -8,6 +8,7 @@
 #include "pica.h"
 #include "primitive_assembly.h"
 #include "vertex_shader.h"
+#include "core/hle/service/gsp_gpu.h"
 
 #include "debug_utils/debug_utils.h"
 
@@ -34,15 +35,26 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
     u32 old_value = registers[id];
     registers[id] = (old_value & ~mask) | (value & mask);
 
+    if (g_debug_context)
+        g_debug_context->OnEvent(DebugContext::Event::CommandLoaded, reinterpret_cast<void*>(&id));
+
     DebugUtils::OnPicaRegWrite(id, registers[id]);
 
     switch(id) {
+        // Trigger IRQ
+        case PICA_REG_INDEX(trigger_irq):
+            GSP_GPU::SignalInterrupt(GSP_GPU::InterruptId::P3D);
+            return;
+
         // It seems like these trigger vertex rendering
         case PICA_REG_INDEX(trigger_draw):
         case PICA_REG_INDEX(trigger_draw_indexed):
         {
             DebugUtils::DumpTevStageConfig(registers.GetTevStages());
 
+            if (g_debug_context)
+                g_debug_context->OnEvent(DebugContext::Event::IncomingPrimitiveBatch, nullptr);
+
             const auto& attribute_config = registers.vertex_attributes;
             const u8* const base_address = Memory::GetPointer(attribute_config.GetBaseAddress());
 
@@ -132,6 +144,10 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
                 clipper_primitive_assembler.SubmitVertex(output, Clipper::ProcessTriangle);
             }
             geometry_dumper.Dump();
+
+            if (g_debug_context)
+                g_debug_context->OnEvent(DebugContext::Event::FinishedPrimitiveBatch, nullptr);
+
             break;
         }
 
@@ -229,6 +245,9 @@ static inline void WritePicaReg(u32 id, u32 value, u32 mask) {
         default:
             break;
     }
+
+    if (g_debug_context)
+        g_debug_context->OnEvent(DebugContext::Event::CommandProcessed, reinterpret_cast<void*>(&id));
 }
 
 static std::ptrdiff_t ExecuteCommandBlock(const u32* first_command_word) {
@@ -259,8 +278,9 @@ static std::ptrdiff_t ExecuteCommandBlock(const u32* first_command_word) {
 
 void ProcessCommandList(const u32* list, u32 size) {
     u32* read_pointer = (u32*)list;
+    u32 list_length = size / sizeof(u32);
 
-    while (read_pointer < list + size) {
+    while (read_pointer < list + list_length) {
         read_pointer += ExecuteCommandBlock(read_pointer);
     }
 }
diff --git a/src/video_core/debug_utils/debug_utils.cpp b/src/video_core/debug_utils/debug_utils.cpp
index 8a5f11424..71b03f31c 100644
--- a/src/video_core/debug_utils/debug_utils.cpp
+++ b/src/video_core/debug_utils/debug_utils.cpp
@@ -3,6 +3,8 @@
 // Refer to the license.txt file included.
 
 #include <algorithm>
+#include <condition_variable>
+#include <list>
 #include <map>
 #include <fstream>
 #include <mutex>
@@ -12,14 +14,56 @@
 #include <png.h>
 #endif
 
+#include "common/log.h"
 #include "common/file_util.h"
 
+#include "video_core/math.h"
 #include "video_core/pica.h"
 
 #include "debug_utils.h"
 
 namespace Pica {
 
+void DebugContext::OnEvent(Event event, void* data) {
+    if (!breakpoints[event].enabled)
+        return;
+
+    {
+        std::unique_lock<std::mutex> lock(breakpoint_mutex);
+
+        // TODO: Should stop the CPU thread here once we multithread emulation.
+
+        active_breakpoint = event;
+        at_breakpoint = true;
+
+        // Tell all observers that we hit a breakpoint
+        for (auto& breakpoint_observer : breakpoint_observers) {
+            breakpoint_observer->OnPicaBreakPointHit(event, data);
+        }
+
+        // Wait until another thread tells us to Resume()
+        resume_from_breakpoint.wait(lock, [&]{ return !at_breakpoint; });
+    }
+}
+
+void DebugContext::Resume() {
+    {
+        std::unique_lock<std::mutex> lock(breakpoint_mutex);
+
+        // Tell all observers that we are about to resume
+        for (auto& breakpoint_observer : breakpoint_observers) {
+            breakpoint_observer->OnPicaResume();
+        }
+
+        // Resume the waiting thread (i.e. OnEvent())
+        at_breakpoint = false;
+    }
+
+    resume_from_breakpoint.notify_one();
+}
+
+std::shared_ptr<DebugContext> g_debug_context; // TODO: Get rid of this global
+
 namespace DebugUtils {
 
 void GeometryDumper::AddTriangle(Vertex& v0, Vertex& v1, Vertex& v2) {
@@ -312,6 +356,42 @@ std::unique_ptr<PicaTrace> FinishPicaTracing()
     return std::move(ret);
 }
 
+const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const TextureInfo& info) {
+    _dbg_assert_(GPU, info.format == Pica::Regs::TextureFormat::RGB8);
+
+    // Cf. rasterizer code for an explanation of this algorithm.
+    int texel_index_within_tile = 0;
+    for (int block_size_index = 0; block_size_index < 3; ++block_size_index) {
+        int sub_tile_width = 1 << block_size_index;
+        int sub_tile_height = 1 << block_size_index;
+
+        int sub_tile_index = (x & sub_tile_width) << block_size_index;
+        sub_tile_index += 2 * ((y & sub_tile_height) << block_size_index);
+        texel_index_within_tile += sub_tile_index;
+    }
+
+    const int block_width = 8;
+    const int block_height = 8;
+
+    int coarse_x = (x / block_width) * block_width;
+    int coarse_y = (y / block_height) * block_height;
+
+    const u8* source_ptr = source + coarse_x * block_height * 3 + coarse_y * info.stride + texel_index_within_tile * 3;
+    return { source_ptr[2], source_ptr[1], source_ptr[0], 255 };
+}
+
+TextureInfo TextureInfo::FromPicaRegister(const Regs::TextureConfig& config,
+                                          const Regs::TextureFormat& format)
+{
+    TextureInfo info;
+    info.address = config.GetPhysicalAddress();
+    info.width = config.width;
+    info.height = config.height;
+    info.format = format;
+    info.stride = Pica::Regs::BytesPerPixel(info.format) * info.width;
+    return info;
+}
+
 void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data) {
     // NOTE: Permanently enabling this just trashes hard disks for no reason.
     //       Hence, this is currently disabled.
@@ -377,27 +457,15 @@ void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data) {
     buf = new u8[row_stride * texture_config.height];
     for (unsigned y = 0; y < texture_config.height; ++y) {
         for (unsigned x = 0; x < texture_config.width; ++x) {
-            // Cf. rasterizer code for an explanation of this algorithm.
-            int texel_index_within_tile = 0;
-            for (int block_size_index = 0; block_size_index < 3; ++block_size_index) {
-                int sub_tile_width = 1 << block_size_index;
-                int sub_tile_height = 1 << block_size_index;
-
-                int sub_tile_index = (x & sub_tile_width) << block_size_index;
-                sub_tile_index += 2 * ((y & sub_tile_height) << block_size_index);
-                texel_index_within_tile += sub_tile_index;
-            }
-
-            const int block_width = 8;
-            const int block_height = 8;
-
-            int coarse_x = (x / block_width) * block_width;
-            int coarse_y = (y / block_height) * block_height;
-
-            u8* source_ptr = (u8*)data + coarse_x * block_height * 3 + coarse_y * row_stride + texel_index_within_tile * 3;
-            buf[3 * x + y * row_stride    ] = source_ptr[2];
-            buf[3 * x + y * row_stride + 1] = source_ptr[1];
-            buf[3 * x + y * row_stride + 2] = source_ptr[0];
+            TextureInfo info;
+            info.width = texture_config.width;
+            info.height = texture_config.height;
+            info.stride = row_stride;
+            info.format = registers.texture0_format;
+            Math::Vec4<u8> texture_color = LookupTexture(data, x, y, info);
+            buf[3 * x + y * row_stride    ] = texture_color.r();
+            buf[3 * x + y * row_stride + 1] = texture_color.g();
+            buf[3 * x + y * row_stride + 2] = texture_color.b();
         }
     }
 
diff --git a/src/video_core/debug_utils/debug_utils.h b/src/video_core/debug_utils/debug_utils.h
index b1558cfae..51f14f12f 100644
--- a/src/video_core/debug_utils/debug_utils.h
+++ b/src/video_core/debug_utils/debug_utils.h
@@ -5,13 +5,147 @@
 #pragma once
 
 #include <array>
+#include <condition_variable>
+#include <list>
+#include <map>
 #include <memory>
+#include <mutex>
 #include <vector>
 
+#include "video_core/math.h"
 #include "video_core/pica.h"
 
 namespace Pica {
 
+class DebugContext {
+public:
+    enum class Event {
+        FirstEvent = 0,
+
+        CommandLoaded = FirstEvent,
+        CommandProcessed,
+        IncomingPrimitiveBatch,
+        FinishedPrimitiveBatch,
+
+        NumEvents
+    };
+
+    /**
+     * Inherit from this class to be notified of events registered to some debug context.
+     * Most importantly this is used for our debugger GUI.
+     *
+     * To implement event handling, override the OnPicaBreakPointHit and OnPicaResume methods.
+     * @warning All BreakPointObservers need to be on the same thread to guarantee thread-safe state access
+     * @todo Evaluate an alternative interface, in which there is only one managing observer and multiple child observers running (by design) on the same thread.
+     */
+    class BreakPointObserver {
+    public:
+        /// Constructs the object such that it observes events of the given DebugContext.
+        BreakPointObserver(std::shared_ptr<DebugContext> debug_context) : context_weak(debug_context) {
+            std::unique_lock<std::mutex> lock(debug_context->breakpoint_mutex);
+            debug_context->breakpoint_observers.push_back(this);
+        }
+
+        virtual ~BreakPointObserver() {
+            auto context = context_weak.lock();
+            if (context) {
+                std::unique_lock<std::mutex> lock(context->breakpoint_mutex);
+                context->breakpoint_observers.remove(this);
+
+                // If we are the last observer to be destroyed, tell the debugger context that
+                // it is free to continue. In particular, this is required for a proper Citra
+                // shutdown, when the emulation thread is waiting at a breakpoint.
+                if (context->breakpoint_observers.empty())
+                    context->Resume();
+            }
+        }
+
+        /**
+         * Action to perform when a breakpoint was reached.
+         * @param event Type of event which triggered the breakpoint
+         * @param data Optional data pointer (if unused, this is a nullptr)
+         * @note This function will perform nothing unless it is overridden in the child class.
+         */
+        virtual void OnPicaBreakPointHit(Event, void*) {
+        }
+
+        /**
+         * Action to perform when emulation is resumed from a breakpoint.
+         * @note This function will perform nothing unless it is overridden in the child class.
+         */
+        virtual void OnPicaResume() {
+        }
+
+    protected:
+        /**
+         * Weak context pointer. This need not be valid, so when requesting a shared_ptr via
+         * context_weak.lock(), always compare the result against nullptr.
+         */
+        std::weak_ptr<DebugContext> context_weak;
+    };
+
+    /**
+     * Simple structure defining a breakpoint state
+     */
+    struct BreakPoint {
+        bool enabled = false;
+    };
+
+    /**
+     * Static constructor used to create a shared_ptr of a DebugContext.
+     */
+    static std::shared_ptr<DebugContext> Construct() {
+        return std::shared_ptr<DebugContext>(new DebugContext);
+    }
+
+    /**
+     * Used by the emulation core when a given event has happened. If a breakpoint has been set
+     * for this event, OnEvent calls the event handlers of the registered breakpoint observers.
+     * The current thread then is halted until Resume() is called from another thread (or until
+     * emulation is stopped).
+     * @param event Event which has happened
+     * @param data Optional data pointer (pass nullptr if unused). Needs to remain valid until Resume() is called.
+     */
+    void OnEvent(Event event, void* data);
+
+    /**
+     * Resume from the current breakpoint.
+     * @warning Calling this from the same thread that OnEvent was called in will cause a deadlock. Calling from any other thread is safe.
+     */
+    void Resume();
+
+    /**
+     * Delete all set breakpoints and resume emulation.
+     */
+    void ClearBreakpoints() {
+        breakpoints.clear();
+        Resume();
+    }
+
+    // TODO: Evaluate if access to these members should be hidden behind a public interface.
+    std::map<Event, BreakPoint> breakpoints;
+    Event active_breakpoint;
+    bool at_breakpoint = false;
+
+private:
+    /**
+     * Private default constructor to make sure people always construct this through Construct()
+     * instead.
+     */
+    DebugContext() = default;
+
+    /// Mutex protecting current breakpoint state and the observer list.
+    std::mutex breakpoint_mutex;
+
+    /// Used by OnEvent to wait for resumption.
+    std::condition_variable resume_from_breakpoint;
+
+    /// List of registered observers
+    std::list<BreakPointObserver*> breakpoint_observers;
+};
+
+extern std::shared_ptr<DebugContext> g_debug_context; // TODO: Get rid of this global
+
 namespace DebugUtils {
 
 // Simple utility class for dumping geometry data to an OBJ file
@@ -57,6 +191,18 @@ bool IsPicaTracing();
 void OnPicaRegWrite(u32 id, u32 value);
 std::unique_ptr<PicaTrace> FinishPicaTracing();
 
+struct TextureInfo {
+    unsigned int address;
+    int width;
+    int height;
+    int stride;
+    Pica::Regs::TextureFormat format;
+
+    static TextureInfo FromPicaRegister(const Pica::Regs::TextureConfig& config,
+                                        const Pica::Regs::TextureFormat& format);
+};
+
+const Math::Vec4<u8> LookupTexture(const u8* source, int x, int y, const TextureInfo& info);
 void DumpTexture(const Pica::Regs::TextureConfig& texture_config, u8* data);
 
 void DumpTevStageConfig(const std::array<Pica::Regs::TevStageConfig,6>& stages);
diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index 5fe15a218..8bac178ca 100644
--- a/src/video_core/pica.h
+++ b/src/video_core/pica.h
@@ -45,10 +45,16 @@ struct Regs {
 #define INSERT_PADDING_WORDS_HELPER2(x, y) INSERT_PADDING_WORDS_HELPER1(x, y)
 #define INSERT_PADDING_WORDS(num_words) u32 INSERT_PADDING_WORDS_HELPER2(pad, __LINE__)[(num_words)];
 
-    INSERT_PADDING_WORDS(0x41);
+    INSERT_PADDING_WORDS(0x10);
+
+    u32 trigger_irq;
+
+    INSERT_PADDING_WORDS(0x30);
 
     BitField<0, 24, u32> viewport_size_x;
+
     INSERT_PADDING_WORDS(0x1);
+
     BitField<0, 24, u32> viewport_size_y;
 
     INSERT_PADDING_WORDS(0x9);
@@ -109,7 +115,7 @@ struct Regs {
 
         u32 address;
 
-        u32 GetPhysicalAddress() {
+        u32 GetPhysicalAddress() const {
             return DecodeAddressRegister(address) - Memory::FCRAM_PADDR + Memory::HEAP_GSP_VADDR;
         }
 
@@ -130,7 +136,26 @@ struct Regs {
         // Seems like they are luminance formats and compressed textures.
     };
 
-    BitField<0, 1, u32> texturing_enable;
+    static unsigned BytesPerPixel(TextureFormat format) {
+        switch (format) {
+        case TextureFormat::RGBA8:
+            return 4;
+
+        case TextureFormat::RGB8:
+            return 3;
+
+        case TextureFormat::RGBA5551:
+        case TextureFormat::RGB565:
+        case TextureFormat::RGBA4:
+            return 2;
+
+        default:
+            // placeholder for yet unknown formats
+            return 1;
+        }
+    }
+
+    BitField< 0, 1, u32> texturing_enable;
     TextureConfig texture0;
     INSERT_PADDING_WORDS(0x8);
     BitField<0, 4, TextureFormat> texture0_format;
@@ -517,10 +542,6 @@ struct Regs {
     static std::string GetCommandName(int index) {
         std::map<u32, std::string> map;
 
-        // TODO: MSVC does not support using offsetof() on non-static data members even though this
-        //       is technically allowed since C++11. Hence, this functionality is disabled until
-        //       MSVC properly supports it.
-        #ifndef _MSC_VER
         Regs regs;
         #define ADD_FIELD(name)                                                                               \
             do {                                                                                              \
@@ -529,6 +550,7 @@ struct Regs {
                     map.insert({i, #name + std::string("+") + std::to_string(i-PICA_REG_INDEX(name))});       \
             } while(false)
 
+        ADD_FIELD(trigger_irq);
         ADD_FIELD(viewport_size_x);
         ADD_FIELD(viewport_size_y);
         ADD_FIELD(viewport_depth_range);
@@ -557,7 +579,6 @@ struct Regs {
         ADD_FIELD(vs_swizzle_patterns);
 
         #undef ADD_FIELD
-        #endif // _MSC_VER
 
         // Return empty string if no match is found
         return map[index];
@@ -593,6 +614,7 @@ private:
 #ifndef _MSC_VER
 #define ASSERT_REG_POSITION(field_name, position) static_assert(offsetof(Regs, field_name) == position * 4, "Field "#field_name" has invalid position")
 
+ASSERT_REG_POSITION(trigger_irq, 0x10);
 ASSERT_REG_POSITION(viewport_size_x, 0x41);
 ASSERT_REG_POSITION(viewport_size_y, 0x43);
 ASSERT_REG_POSITION(viewport_depth_range, 0x4d);
diff --git a/src/video_core/renderer_opengl/gl_shader_util.cpp b/src/video_core/renderer_opengl/gl_shader_util.cpp
index a0eb0418c..fdac9ae1a 100644
--- a/src/video_core/renderer_opengl/gl_shader_util.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_util.cpp
@@ -22,7 +22,7 @@ GLuint LoadShaders(const char* vertex_shader, const char* fragment_shader) {
     // Compile Vertex Shader
     DEBUG_LOG(GPU, "Compiling vertex shader.");
 
-    glShaderSource(vertex_shader_id, 1, &vertex_shader, NULL);
+    glShaderSource(vertex_shader_id, 1, &vertex_shader, nullptr);
     glCompileShader(vertex_shader_id);
 
     // Check Vertex Shader
@@ -31,14 +31,14 @@ GLuint LoadShaders(const char* vertex_shader, const char* fragment_shader) {
 
     if (info_log_length > 1) {
         std::vector<char> vertex_shader_error(info_log_length);
-        glGetShaderInfoLog(vertex_shader_id, info_log_length, NULL, &vertex_shader_error[0]);
+        glGetShaderInfoLog(vertex_shader_id, info_log_length, nullptr, &vertex_shader_error[0]);
         DEBUG_LOG(GPU, "%s", &vertex_shader_error[0]);
     }
 
     // Compile Fragment Shader
     DEBUG_LOG(GPU, "Compiling fragment shader.");
 
-    glShaderSource(fragment_shader_id, 1, &fragment_shader, NULL);
+    glShaderSource(fragment_shader_id, 1, &fragment_shader, nullptr);
     glCompileShader(fragment_shader_id);
 
     // Check Fragment Shader
@@ -47,7 +47,7 @@ GLuint LoadShaders(const char* vertex_shader, const char* fragment_shader) {
 
     if (info_log_length > 1) {
         std::vector<char> fragment_shader_error(info_log_length);
-        glGetShaderInfoLog(fragment_shader_id, info_log_length, NULL, &fragment_shader_error[0]);
+        glGetShaderInfoLog(fragment_shader_id, info_log_length, nullptr, &fragment_shader_error[0]);
         DEBUG_LOG(GPU, "%s", &fragment_shader_error[0]);
     }
 
@@ -65,7 +65,7 @@ GLuint LoadShaders(const char* vertex_shader, const char* fragment_shader) {
 
     if (info_log_length > 1) {
         std::vector<char> program_error(info_log_length);
-        glGetProgramInfoLog(program_id, info_log_length, NULL, &program_error[0]);
+        glGetProgramInfoLog(program_id, info_log_length, nullptr, &program_error[0]);
         DEBUG_LOG(GPU, "%s", &program_error[0]);
     }
 
diff --git a/src/video_core/video_core.cpp b/src/video_core/video_core.cpp
index c779771c5..b581ff4da 100644
--- a/src/video_core/video_core.cpp
+++ b/src/video_core/video_core.cpp
@@ -17,8 +17,8 @@
 
 namespace VideoCore {
 
-EmuWindow*      g_emu_window    = NULL;     ///< Frontend emulator window
-RendererBase*   g_renderer      = NULL;     ///< Renderer plugin
+EmuWindow*      g_emu_window    = nullptr;     ///< Frontend emulator window
+RendererBase*   g_renderer      = nullptr;     ///< Renderer plugin
 int             g_current_frame = 0;
 
 /// Initialize the video core