Added system for handling core errors in citra-qt.

src/citra_qt/bootmanager.cpp

@@ -37,7 +37,11 @@ void EmuThread::run() {
             if (!was_active)
                 emit DebugModeLeft();
 
-            Core::System::GetInstance().RunLoop();
+            Core::System::ResultStatus result = Core::System::GetInstance().RunLoop();
+            if (result != Core::System::ResultStatus::Success) {
+                emit ErrorThrown(result);
+                break;
+            }
 
             was_active = running || exec_step;
             if (!was_active && !stop_run)

src/citra_qt/bootmanager.h

@@ -10,6 +10,7 @@
 #include <QGLWidget>
 #include <QThread>
 #include "common/thread.h"
+#include "core/core.h"
 #include "core/frontend/emu_window.h"
 #include "core/frontend/motion_emu.h"
 
@@ -97,6 +98,8 @@ signals:
      * Qt::BlockingQueuedConnection (additionally block source thread until slot returns)
      */
     void DebugModeLeft();
+
+    void ErrorThrown(Core::System::ResultStatus);
 };
 
 class GRenderWindow : public QWidget, public EmuWindow {

src/citra_qt/main.cpp

@@ -301,8 +301,7 @@ bool GMainWindow::LoadROM(const QString& filename) {
 
     if (!gladLoadGL()) {
         QMessageBox::critical(this, tr("Error while starting Citra!"),
-                              tr("Failed to initialize the video core!\n\n"
-                                 "Please ensure that your GPU supports OpenGL 3.3 and that you "
+                              tr("Your GPU may not support OpenGL 3.3, or you do not"
                                  "have the latest graphics driver."));
         return false;
     }
@@ -327,18 +326,17 @@ bool GMainWindow::LoadROM(const QString& filename) {
             break;
 
         case Core::System::ResultStatus::ErrorLoader_ErrorEncrypted: {
-            // Build the MessageBox ourselves to have clickable link
-            QMessageBox popup_error;
-            popup_error.setTextFormat(Qt::RichText);
-            popup_error.setWindowTitle(tr("Error while loading ROM!"));
-            popup_error.setText(
+            QMessageBox::critical(
+                this, tr("Error while loading ROM!"),
                 tr("The game that you are trying to load must be decrypted before being used with "
                    "Citra.<br/><br/>"
-                   "For more information on dumping and decrypting games, please see: <a "
-                   "href='https://citra-emu.org/wiki/Dumping-Game-Cartridges'>https://"
-                   "citra-emu.org/wiki/Dumping-Game-Cartridges</a>"));
-            popup_error.setIcon(QMessageBox::Critical);
-            popup_error.exec();
+                   "For more information on dumping and decrypting games, please see the following "
+                   "wiki pages: <ul>"
+                   "<li><a href='https://citra-emu.org/wiki/Dumping-Game-Cartridges/'>Dumping Game "
+                   "Cartridges</a></li>"
+                   "<li><a href='https://citra-emu.org/wiki/Dumping-Installed-Titles/'>Dumping "
+                   "Installed Titles</a></li>"
+                   "</ul>"));
             break;
         }
         case Core::System::ResultStatus::ErrorLoader_ErrorInvalidFormat:
@@ -346,8 +344,16 @@ bool GMainWindow::LoadROM(const QString& filename) {
                                   tr("The ROM format is not supported."));
             break;
 
+        case Core::System::ResultStatus::ErrorOpenGL:
+            QMessageBox::critical(this, tr("Error while loading OpenGL!"),
+                                  tr("Your GPU may not support OpenGL 3.3, or you do not "
+                                     "have the latest graphics driver."));
+            break;
+
         default:
-            QMessageBox::critical(this, tr("Error while loading ROM!"), tr("Unknown error!"));
+            QMessageBox::critical(
+                this, tr("Error while loading ROM!"),
+                tr("An unknown error occured. Please see the log for more details."));
             break;
         }
         return false;
@@ -530,6 +536,9 @@ void GMainWindow::OnMenuRecentFile() {
 
 void GMainWindow::OnStartGame() {
     emu_thread->SetRunning(true);
+    qRegisterMetaType<Core::System::ResultStatus>("Core::System::ResultStatus");
+    connect(emu_thread.get(), SIGNAL(ErrorThrown(Core::System::ResultStatus)), this,
+            SLOT(OnCoreError(Core::System::ResultStatus)));
 
     ui.action_Start->setEnabled(false);
     ui.action_Start->setText(tr("Continue"));
@@ -622,14 +631,57 @@ void GMainWindow::UpdateStatusBar() {
     emu_frametime_label->setVisible(true);
 }
 
+void GMainWindow::OnCoreError(Core::System::ResultStatus result) {
+    // Waiting for the dialog to be closed before shutting down causes a segfault, maybe because of
+    // the profiler
+    ShutdownGame();
+    switch (result) {
+    case Core::System::ResultStatus::ErrorSystemFiles:
+        QMessageBox::critical(
+            this, "System Archive Not Found",
+            "Citra was unable to locate the 3DS system archive.<br/><br/>"
+            "The game you are trying to load requires additional files from your 3DS to be dumped "
+            "before playing.<br/><br/>"
+            "For more information on dumping these files, please see the following wiki page: "
+            "<a "
+            "href='https://citra-emu.org/wiki/"
+            "Dumping-System-Archives-and-the-Shared-Fonts-from-a-3DS-Console/'>Dumping System "
+            "Archives and the Shared Fonts from a 3DS Console</a>"
+            ".");
+        break;
+
+    case Core::System::ResultStatus::ErrorSharedFont:
+        QMessageBox::critical(
+            this, "Shared Fonts Not Found",
+            "Citra was unable to locate the 3DS shared fonts.<br/><br/>"
+            "The game you are trying to load requires additional files from your 3DS to be dumped "
+            "before playing.<br/><br/>"
+            "For more information on dumping these files, please see the following wiki page: "
+            "<a "
+            "href='https://citra-emu.org/wiki/"
+            "Dumping-System-Archives-and-the-Shared-Fonts-from-a-3DS-Console/'>Dumping System "
+            "Archives and the Shared Fonts from a 3DS Console</a>"
+            ".");
+        break;
+
+    case Core::System::ResultStatus::ErrorUnknown:
+        QMessageBox::critical(
+            this, "Fatal Error",
+            "Citra has encountered a fatal error, please see the log for more details.");
+        break;
+
+    default:
+        break;
+    }
+}
+
 bool GMainWindow::ConfirmClose() {
     if (emu_thread == nullptr || !UISettings::values.confirm_before_closing)
         return true;
 
-    auto answer =
-        QMessageBox::question(this, tr("Citra"), tr("Are you sure you want to close Citra?"),
-                              QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
-    return answer != QMessageBox::No;
+    return QMessageBox::question(this, tr("Citra"), tr("Are you sure you want to close Citra?"),
+                                 QMessageBox::Yes | QMessageBox::No,
+                                 QMessageBox::No) != QMessageBox::No;
 }
 
 void GMainWindow::closeEvent(QCloseEvent* event) {

src/citra_qt/main.h

@@ -125,6 +125,7 @@ private slots:
     void OnDisplayTitleBars(bool);
     void ToggleWindowMode();
     void OnCreateGraphicsSurfaceViewer();
+    void OnCoreError(Core::System::ResultStatus);
 
 private:
     void UpdateStatusBar();

src/core/core.cpp

@@ -59,7 +59,7 @@ System::ResultStatus System::RunLoop(int tight_loop) {
     HW::Update();
     Reschedule();
 
-    return ResultStatus::Success;
+    return GetStatus();
 }
 
 System::ResultStatus System::SingleStep() {
@@ -73,11 +73,21 @@ System::ResultStatus System::Load(EmuWindow* emu_window, const std::string& file
         LOG_CRITICAL(Core, "Failed to obtain loader for %s!", filepath.c_str());
         return ResultStatus::ErrorGetLoader;
     }
+    boost::optional<u32> system_mode = boost::none;
 
-    boost::optional<u32> system_mode{app_loader->LoadKernelSystemMode()};
+    Loader::ResultStatus load_result{app_loader->LoadKernelSystemMode(system_mode)};
     if (!system_mode) {
-        LOG_CRITICAL(Core, "Failed to determine system mode!");
-        return ResultStatus::ErrorSystemMode;
+        LOG_CRITICAL(Core, "Failed to determine system mode (Error %i)!", load_result);
+        System::Shutdown();
+
+        switch (load_result) {
+        case Loader::ResultStatus::ErrorEncrypted:
+            return ResultStatus::ErrorLoader_ErrorEncrypted;
+        case Loader::ResultStatus::ErrorInvalidFormat:
+            return ResultStatus::ErrorLoader_ErrorInvalidFormat;
+        default:
+            return ResultStatus::ErrorSystemMode;
+        }
     }
 
     ResultStatus init_result{Init(emu_window, system_mode.get())};
@@ -87,7 +97,7 @@ System::ResultStatus System::Load(EmuWindow* emu_window, const std::string& file
         return init_result;
     }
 
-    const Loader::ResultStatus load_result{app_loader->Load()};
+    load_result = app_loader->Load();
     if (Loader::ResultStatus::Success != load_result) {
         LOG_CRITICAL(Core, "Failed to load ROM (Error %i)!", load_result);
         System::Shutdown();
@@ -101,6 +111,8 @@ System::ResultStatus System::Load(EmuWindow* emu_window, const std::string& file
             return ResultStatus::ErrorLoader;
         }
     }
+    // this->status will be used for errors while actually running the game
+    status = ResultStatus::Success;
     return ResultStatus::Success;
 }
 
@@ -142,7 +154,7 @@ System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
     GDBStub::Init();
 
     if (!VideoCore::Init(emu_window)) {
-        return ResultStatus::ErrorVideoCore;
+        return ResultStatus::ErrorOpenGL;
     }
 
     LOG_DEBUG(Core, "Initialized OK");

src/core/core.h

@@ -40,7 +40,11 @@ public:
         ErrorLoader_ErrorEncrypted, ///< Error loading the specified application due to encryption
         ErrorLoader_ErrorInvalidFormat, ///< Error loading the specified application due to an
                                         /// invalid format
+        ErrorSystemFiles,               ///< Error in finding system files
+        ErrorSharedFont,                ///< Error in finding shared font
         ErrorVideoCore,                 ///< Error in the video core
+        ErrorOpenGL,                    ///< Error when initializing OpenGL
+        ErrorUnknown                    ///< Any other error
     };
 
     /**
@@ -105,6 +109,14 @@ public:
     PerfStats perf_stats;
     FrameLimiter frame_limiter;
 
+    ResultStatus GetStatus() {
+        return status;
+    }
+
+    void SetStatus(ResultStatus newStatus) {
+        status = newStatus;
+    }
+
 private:
     /**
      * Initialize the emulated system.
@@ -130,6 +142,7 @@ private:
     std::unique_ptr<Core::TelemetrySession> telemetry_session;
 
     static System s_instance;
+    ResultStatus status;
 };
 
 inline ARM_Interface& CPU() {

src/core/hle/service/apt/apt.cpp

@@ -5,6 +5,7 @@
 #include "common/common_paths.h"
 #include "common/file_util.h"
 #include "common/logging/log.h"
+#include "core/core.h"
 #include "core/hle/applets/applet.h"
 #include "core/hle/kernel/event.h"
 #include "core/hle/kernel/mutex.h"
@@ -74,6 +75,7 @@ void GetSharedFont(Service::Interface* self) {
         LOG_ERROR(Service_APT, "shared font file missing - go dump it from your 3ds");
         rb.Push<u32>(-1); // TODO: Find the right error code
         rb.Skip(1 + 2, true);
+        Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorSharedFont);
         return;
     }
 
@@ -279,8 +281,9 @@ void CancelParameter(Service::Interface* self) {
     rb.Push(RESULT_SUCCESS); // No error
     rb.Push(true);           // Set to Success
 
-    LOG_WARNING(Service_APT, "(STUBBED) called check_sender=0x%08X, sender_appid=0x%08X, "
-                             "check_receiver=0x%08X, receiver_appid=0x%08X",
+    LOG_WARNING(Service_APT,
+                "(STUBBED) called check_sender=0x%08X, sender_appid=0x%08X, "
+                "check_receiver=0x%08X, receiver_appid=0x%08X",
                 check_sender, sender_appid, check_receiver, receiver_appid);
 }
 

src/core/hle/service/err_f.cpp

@@ -10,6 +10,7 @@
 #include "common/bit_field.h"
 #include "common/common_types.h"
 #include "common/logging/log.h"
+#include "core/core.h"
 #include "core/hle/result.h"
 #include "core/hle/service/err_f.h"
 
@@ -172,6 +173,7 @@ static void ThrowFatalError(Interface* self) {
     const ErrInfo* errinfo = reinterpret_cast<ErrInfo*>(&cmd_buff[1]);
     LOG_CRITICAL(Service_ERR, "Fatal error type: %s",
                  GetErrType(errinfo->errinfo_common.specifier).c_str());
+    Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorUnknown);
 
     // Generic Info
     LogGenericInfo(errinfo->errinfo_common);

src/core/hle/service/fs/fs_user.cpp

@@ -8,6 +8,7 @@
 #include "common/logging/log.h"
 #include "common/scope_exit.h"
 #include "common/string_util.h"
+#include "core/core.h"
 #include "core/file_sys/errors.h"
 #include "core/hle/kernel/client_session.h"
 #include "core/hle/result.h"
@@ -132,6 +133,10 @@ static void OpenFileDirectly(Service::Interface* self) {
         LOG_ERROR(Service_FS,
                   "failed to get a handle for archive archive_id=0x%08X archive_path=%s",
                   static_cast<u32>(archive_id), archive_path.DebugStr().c_str());
+        if (static_cast<u32>(archive_id) == 0x2345678A) {
+            Core::System::GetInstance().SetStatus(Core::System::ResultStatus::ErrorSystemFiles);
+            return;
+        }
         cmd_buff[1] = archive_handle.Code().raw;
         cmd_buff[3] = 0;
         return;