early-access version 2777

README.md

@@ -1,8 +1,8 @@
 yuzu emulator early access
 =============
 
-This is the source code for early-access 2774.
+This is the source code for early-access 2777.
 
 ## Legal Notice
 
-yuzu is a GPLv3 program, which allows fully free redistribution of its source code.
+yuzu is a GPLv2 program, which allows fully free redistribution of its source code.

externals/CMakeLists.txt

@@ -40,6 +40,11 @@ target_include_directories(mbedtls PUBLIC ./mbedtls/include)
 add_library(microprofile INTERFACE)
 target_include_directories(microprofile INTERFACE ./microprofile)
 
+# GCC bugs
+if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "12" AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND MINGW)
+    target_compile_options(microprofile INTERFACE "-Wno-array-bounds")
+endif()
+
 # libusb
 if (NOT LIBUSB_FOUND OR YUZU_USE_BUNDLED_LIBUSB)
     add_subdirectory(libusb)

src/common/assert.cpp

@@ -6,15 +6,11 @@
 
 #include "common/settings.h"
 
-void assert_check_condition(bool cond, std::function<void()>&& on_failure) {
+void assert_fail_impl() {
-    if (!cond) [[unlikely]] {
-        on_failure();
-
     if (Settings::values.use_debug_asserts) {
         Crash();
     }
 }
-}
 
 [[noreturn]] void unreachable_impl() {
     Crash();

src/common/assert.h

@@ -4,47 +4,36 @@
 
 #pragma once
 
-#include <functional>
-
 #include "common/logging/log.h"
 
 // Sometimes we want to try to continue even after hitting an assert.
 // However touching this file yields a global recompilation as this header is included almost
 // everywhere. So let's just move the handling of the failed assert to a single cpp file.
 
-// For asserts we'd like to keep all the junk executed when an assert happens away from the
+void assert_fail_impl();
-// important code in the function. One way of doing this is to put all the relevant code inside a
-// lambda and force the compiler to not inline it.
-void assert_check_condition(bool cond, std::function<void()>&& on_failure);
-
 [[noreturn]] void unreachable_impl();
 
+#ifdef _MSC_VER
+#define NO_INLINE __declspec(noinline)
+#else
+#define NO_INLINE __attribute__((noinline))
+#endif
+
 #define ASSERT(_a_)                                                                                \
-    do {                                                                                           \
+    ([&]() NO_INLINE {                                                                             \
-        if (std::is_constant_evaluated()) {                                                        \
+        if (!(_a_)) [[unlikely]] {                                                                 \
-            if (!(_a_)) {                                                                          \
+            LOG_CRITICAL(Debug, "Assertion Failed!");                                              \
-                /* Will trigger compile error here */                                              \
+            assert_fail_impl();                                                                    \
-                assert_check_condition(bool(_a_),                                                  \
-                                       [] { LOG_CRITICAL(Debug, "Assertion Failed!"); });          \
         }                                                                                          \
-        } else {                                                                                   \
+    }())
-            assert_check_condition(bool(_a_), [] { LOG_CRITICAL(Debug, "Assertion Failed!"); });   \
-        }                                                                                          \
-    } while (0)
 
 #define ASSERT_MSG(_a_, ...)                                                                       \
-    do {                                                                                           \
+    ([&]() NO_INLINE {                                                                             \
-        if (std::is_constant_evaluated()) {                                                        \
+        if (!(_a_)) [[unlikely]] {                                                                 \
-            if (!(_a_)) {                                                                          \
+            LOG_CRITICAL(Debug, "Assertion Failed!\n" __VA_ARGS__);                                \
-                /* Will trigger compile error here */                                              \
+            assert_fail_impl();                                                                    \
-                assert_check_condition(bool(_a_),                                                  \
-                                       [] { LOG_CRITICAL(Debug, "Assertion Failed!"); });          \
         }                                                                                          \
-        } else {                                                                                   \
+    }())
-            assert_check_condition(                                                                \
-                bool(_a_), [&] { LOG_CRITICAL(Debug, "Assertion Failed!\n" __VA_ARGS__); });       \
-        }                                                                                          \
-    } while (0)
 
 #define UNREACHABLE()                                                                              \
     do {                                                                                           \

src/core/core.cpp

@@ -493,6 +493,12 @@ void System::Shutdown() {
     impl->Shutdown();
 }
 
+void System::DetachDebugger() {
+    if (impl->debugger) {
+        impl->debugger->NotifyShutdown();
+    }
+}
+
 std::unique_lock<std::mutex> System::StallCPU() {
     return impl->StallCPU();
 }

src/core/core.h

@@ -160,6 +160,9 @@ public:
     /// Shutdown the emulated system.
     void Shutdown();
 
+    /// Forcibly detach the debugger if it is running.
+    void DetachDebugger();
+
     std::unique_lock<std::mutex> StallCPU();
     void UnstallCPU();
 

src/core/debugger/debugger.cpp

@@ -42,6 +42,16 @@ static std::span<const u8> ReceiveInto(Readable& r, Buffer& buffer) {
     return received_data;
 }
 
+enum class SignalType {
+    Stopped,
+    ShuttingDown,
+};
+
+struct SignalInfo {
+    SignalType type;
+    Kernel::KThread* thread;
+};
+
 namespace Core {
 
 class DebuggerImpl : public DebuggerBackend {
@@ -56,7 +66,7 @@ public:
         ShutdownServer();
     }
 
-    bool NotifyThreadStopped(Kernel::KThread* thread) {
+    bool SignalDebugger(SignalInfo signal_info) {
         std::scoped_lock lk{connection_lock};
 
         if (stopped) {
@@ -64,9 +74,13 @@ public:
             // It should be ignored.
             return false;
         }
-        stopped = true;
 
-        boost::asio::write(signal_pipe, boost::asio::buffer(&thread, sizeof(thread)));
+        // Set up the state.
+        stopped = true;
+        info = signal_info;
+
+        // Write a single byte into the pipe to wake up the debug interface.
+        boost::asio::write(signal_pipe, boost::asio::buffer(&stopped, sizeof(stopped)));
         return true;
     }
 
@@ -96,7 +110,7 @@ private:
         connection_thread = std::jthread([&, port](std::stop_token stop_token) {
             try {
                 // Initialize the listening socket and accept a new client.
-                tcp::endpoint endpoint{boost::asio::ip::address_v4::loopback(), port};
+                tcp::endpoint endpoint{boost::asio::ip::address_v4::any(), port};
                 tcp::acceptor acceptor{io_context, endpoint};
 
                 acceptor.async_accept(client_socket, [](const auto&) {});
@@ -124,7 +138,7 @@ private:
         Common::SetCurrentThreadName("yuzu:Debugger");
 
         // Set up the client signals for new data.
-        AsyncReceiveInto(signal_pipe, active_thread, [&](auto d) { PipeData(d); });
+        AsyncReceiveInto(signal_pipe, pipe_data, [&](auto d) { PipeData(d); });
         AsyncReceiveInto(client_socket, client_data, [&](auto d) { ClientData(d); });
 
         // Stop the emulated CPU.
@@ -142,9 +156,28 @@ private:
     }
 
     void PipeData(std::span<const u8> data) {
+        switch (info.type) {
+        case SignalType::Stopped:
+            // Stop emulation.
             AllCoreStop();
+
+            // Notify the client.
+            active_thread = info.thread;
             UpdateActiveThread();
             frontend->Stopped(active_thread);
+
+            break;
+        case SignalType::ShuttingDown:
+            frontend->ShuttingDown();
+
+            // Wait for emulation to shut down gracefully now.
+            suspend.reset();
+            signal_pipe.close();
+            client_socket.shutdown(boost::asio::socket_base::shutdown_both);
+            LOG_INFO(Debug_GDBStub, "Shut down server");
+
+            break;
+        }
     }
 
     void ClientData(std::span<const u8> data) {
@@ -246,7 +279,9 @@ private:
     boost::asio::ip::tcp::socket client_socket;
     std::optional<std::unique_lock<std::mutex>> suspend;
 
+    SignalInfo info;
     Kernel::KThread* active_thread;
+    bool pipe_data;
     bool stopped;
 
     std::array<u8, 4096> client_data;
@@ -263,7 +298,13 @@ Debugger::Debugger(Core::System& system, u16 port) {
 Debugger::~Debugger() = default;
 
 bool Debugger::NotifyThreadStopped(Kernel::KThread* thread) {
-    return impl && impl->NotifyThreadStopped(thread);
+    return impl && impl->SignalDebugger(SignalInfo{SignalType::Stopped, thread});
+}
+
+void Debugger::NotifyShutdown() {
+    if (impl) {
+        impl->SignalDebugger(SignalInfo{SignalType::ShuttingDown, nullptr});
+    }
 }
 
 } // namespace Core

src/core/debugger/debugger.h

@@ -35,6 +35,11 @@ public:
      */
     bool NotifyThreadStopped(Kernel::KThread* thread);
 
+    /**
+     * Notify the debugger that a shutdown is being performed now and disconnect.
+     */
+    void NotifyShutdown();
+
 private:
     std::unique_ptr<DebuggerImpl> impl;
 };

src/core/debugger/debugger_interface.h

@@ -66,6 +66,11 @@ public:
      */
     virtual void Stopped(Kernel::KThread* thread) = 0;
 
+    /**
+     * Called when emulation is shutting down.
+     */
+    virtual void ShuttingDown() = 0;
+
     /**
      * Called when new data is asynchronously received on the client socket.
      * A list of actions to perform is returned.

src/core/debugger/gdbstub.cpp

@@ -106,6 +106,8 @@ GDBStub::~GDBStub() = default;
 
 void GDBStub::Connected() {}
 
+void GDBStub::ShuttingDown() {}
+
 void GDBStub::Stopped(Kernel::KThread* thread) {
     SendReply(arch->ThreadStatus(thread, GDB_STUB_SIGTRAP));
 }

src/core/debugger/gdbstub.h

@@ -23,6 +23,7 @@ public:
 
     void Connected() override;
     void Stopped(Kernel::KThread* thread) override;
+    void ShuttingDown() override;
     std::vector<DebuggerAction> ClientData(std::span<const u8> data) override;
 
 private:

src/core/hle/kernel/kernel.cpp

@@ -212,7 +212,9 @@ struct KernelCore::Impl {
         system_resource_limit = KResourceLimit::Create(system.Kernel());
         system_resource_limit->Initialize(&core_timing);
 
-        const auto [total_size, kernel_size] = memory_layout->GetTotalAndKernelMemorySizes();
+        const auto sizes{memory_layout->GetTotalAndKernelMemorySizes()};
+        const auto total_size{sizes.first};
+        const auto kernel_size{sizes.second};
 
         // If setting the default system values fails, then something seriously wrong has occurred.
         ASSERT(system_resource_limit->SetLimitValue(LimitableResource::PhysicalMemory, total_size)

src/core/hle/service/glue/notif.cpp

@@ -1,6 +1,11 @@
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include <algorithm>
+#include <cstring>
+
+#include "common/assert.h"
+#include "common/logging/log.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/service/glue/notif.h"
 
@@ -9,11 +14,11 @@ namespace Service::Glue {
 NOTIF_A::NOTIF_A(Core::System& system_) : ServiceFramework{system_, "notif:a"} {
     // clang-format off
     static const FunctionInfo functions[] = {
-        {500, nullptr, "RegisterAlarmSetting"},
+        {500, &NOTIF_A::RegisterAlarmSetting, "RegisterAlarmSetting"},
-        {510, nullptr, "UpdateAlarmSetting"},
+        {510, &NOTIF_A::UpdateAlarmSetting, "UpdateAlarmSetting"},
         {520, &NOTIF_A::ListAlarmSettings, "ListAlarmSettings"},
-        {530, nullptr, "LoadApplicationParameter"},
+        {530, &NOTIF_A::LoadApplicationParameter, "LoadApplicationParameter"},
-        {540, nullptr, "DeleteAlarmSetting"},
+        {540, &NOTIF_A::DeleteAlarmSetting, "DeleteAlarmSetting"},
         {1000, &NOTIF_A::Initialize, "Initialize"},
     };
     // clang-format on
@@ -23,21 +28,132 @@ NOTIF_A::NOTIF_A(Core::System& system_) : ServiceFramework{system_, "notif:a"} {
 
 NOTIF_A::~NOTIF_A() = default;
 
-void NOTIF_A::ListAlarmSettings(Kernel::HLERequestContext& ctx) {
+void NOTIF_A::RegisterAlarmSetting(Kernel::HLERequestContext& ctx) {
-    // Returns an array of AlarmSetting
+    const auto alarm_setting_buffer_size = ctx.GetReadBufferSize(0);
-    constexpr s32 alarm_count = 0;
+    const auto application_parameter_size = ctx.GetReadBufferSize(1);
 
-    LOG_WARNING(Service_NOTIF, "(STUBBED) called");
+    ASSERT_MSG(alarm_setting_buffer_size == sizeof(AlarmSetting),
+               "alarm_setting_buffer_size is not 0x40 bytes");
+    ASSERT_MSG(application_parameter_size <= sizeof(ApplicationParameter),
+               "application_parameter_size is bigger than 0x400 bytes");
+
+    AlarmSetting new_alarm{};
+    memcpy(&new_alarm, ctx.ReadBuffer(0).data(), sizeof(AlarmSetting));
+
+    // TODO: Count alarms per game id
+    if (alarms.size() >= max_alarms) {
+        LOG_ERROR(Service_NOTIF, "Alarm limit reached");
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(ResultUnknown);
+        return;
+    }
+
+    new_alarm.alarm_setting_id = last_alarm_setting_id++;
+    alarms.push_back(new_alarm);
+
+    // TODO: Save application parameter data
+
+    LOG_WARNING(Service_NOTIF,
+                "(STUBBED) called, application_parameter_size={}, setting_id={}, kind={}, muted={}",
+                application_parameter_size, new_alarm.alarm_setting_id, new_alarm.kind,
+                new_alarm.muted);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
+    rb.Push(new_alarm.alarm_setting_id);
+}
+
+void NOTIF_A::UpdateAlarmSetting(Kernel::HLERequestContext& ctx) {
+    const auto alarm_setting_buffer_size = ctx.GetReadBufferSize(0);
+    const auto application_parameter_size = ctx.GetReadBufferSize(1);
+
+    ASSERT_MSG(alarm_setting_buffer_size == sizeof(AlarmSetting),
+               "alarm_setting_buffer_size is not 0x40 bytes");
+    ASSERT_MSG(application_parameter_size <= sizeof(ApplicationParameter),
+               "application_parameter_size is bigger than 0x400 bytes");
+
+    AlarmSetting alarm_setting{};
+    memcpy(&alarm_setting, ctx.ReadBuffer(0).data(), sizeof(AlarmSetting));
+
+    const auto alarm_it = GetAlarmFromId(alarm_setting.alarm_setting_id);
+    if (alarm_it != alarms.end()) {
+        LOG_DEBUG(Service_NOTIF, "Alarm updated");
+        *alarm_it = alarm_setting;
+        // TODO: Save application parameter data
+    }
+
+    LOG_WARNING(Service_NOTIF,
+                "(STUBBED) called, application_parameter_size={}, setting_id={}, kind={}, muted={}",
+                application_parameter_size, alarm_setting.alarm_setting_id, alarm_setting.kind,
+                alarm_setting.muted);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
+}
+
+void NOTIF_A::ListAlarmSettings(Kernel::HLERequestContext& ctx) {
+    LOG_INFO(Service_NOTIF, "called, alarm_count={}", alarms.size());
+
+    // TODO: Only return alarms of this game id
+    ctx.WriteBuffer(alarms);
 
     IPC::ResponseBuilder rb{ctx, 3};
     rb.Push(ResultSuccess);
-    rb.Push(alarm_count);
+    rb.Push(static_cast<u32>(alarms.size()));
+}
+
+void NOTIF_A::LoadApplicationParameter(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto alarm_setting_id{rp.Pop<AlarmSettingId>()};
+
+    const auto alarm_it = GetAlarmFromId(alarm_setting_id);
+    if (alarm_it == alarms.end()) {
+        LOG_ERROR(Service_NOTIF, "Invalid alarm setting id={}", alarm_setting_id);
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(ResultUnknown);
+        return;
+    }
+
+    // TODO: Read application parameter related to this setting id
+    ApplicationParameter application_parameter{};
+
+    LOG_WARNING(Service_NOTIF, "(STUBBED) called, alarm_setting_id={}", alarm_setting_id);
+
+    ctx.WriteBuffer(application_parameter);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
+    rb.Push(static_cast<u32>(application_parameter.size()));
+}
+
+void NOTIF_A::DeleteAlarmSetting(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto alarm_setting_id{rp.Pop<AlarmSettingId>()};
+
+    std::erase_if(alarms, [alarm_setting_id](const AlarmSetting& alarm) {
+        return alarm.alarm_setting_id == alarm_setting_id;
+    });
+
+    LOG_INFO(Service_NOTIF, "called, alarm_setting_id={}", alarm_setting_id);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
 }
 
 void NOTIF_A::Initialize(Kernel::HLERequestContext& ctx) {
+    // TODO: Load previous alarms from config
+
     LOG_WARNING(Service_NOTIF, "(STUBBED) called");
     IPC::ResponseBuilder rb{ctx, 2};
     rb.Push(ResultSuccess);
 }
 
+std::vector<NOTIF_A::AlarmSetting>::iterator NOTIF_A::GetAlarmFromId(
+    AlarmSettingId alarm_setting_id) {
+    return std::find_if(alarms.begin(), alarms.end(),
+                        [alarm_setting_id](const AlarmSetting& alarm) {
+                            return alarm.alarm_setting_id == alarm_setting_id;
+                        });
+}
+
 } // namespace Service::Glue

src/core/hle/service/glue/notif.h

@@ -3,6 +3,10 @@
 
 #pragma once
 
+#include <array>
+#include <vector>
+
+#include "common/uuid.h"
 #include "core/hle/service/service.h"
 
 namespace Core {
@@ -17,8 +21,52 @@ public:
     ~NOTIF_A() override;
 
 private:
+    static constexpr std::size_t max_alarms = 8;
+
+    // This is nn::notification::AlarmSettingId
+    using AlarmSettingId = u16;
+    static_assert(sizeof(AlarmSettingId) == 0x2, "AlarmSettingId is an invalid size");
+
+    using ApplicationParameter = std::array<u8, 0x400>;
+    static_assert(sizeof(ApplicationParameter) == 0x400, "ApplicationParameter is an invalid size");
+
+    struct DailyAlarmSetting {
+        s8 hour;
+        s8 minute;
+    };
+    static_assert(sizeof(DailyAlarmSetting) == 0x2, "DailyAlarmSetting is an invalid size");
+
+    struct WeeklyScheduleAlarmSetting {
+        INSERT_PADDING_BYTES(0xA);
+        std::array<DailyAlarmSetting, 0x7> day_of_week;
+    };
+    static_assert(sizeof(WeeklyScheduleAlarmSetting) == 0x18,
+                  "WeeklyScheduleAlarmSetting is an invalid size");
+
+    // This is nn::notification::AlarmSetting
+    struct AlarmSetting {
+        AlarmSettingId alarm_setting_id;
+        u8 kind;
+        u8 muted;
+        INSERT_PADDING_BYTES(0x4);
+        Common::UUID account_id;
+        u64 application_id;
+        INSERT_PADDING_BYTES(0x8);
+        WeeklyScheduleAlarmSetting schedule;
+    };
+    static_assert(sizeof(AlarmSetting) == 0x40, "AlarmSetting is an invalid size");
+
+    void RegisterAlarmSetting(Kernel::HLERequestContext& ctx);
+    void UpdateAlarmSetting(Kernel::HLERequestContext& ctx);
     void ListAlarmSettings(Kernel::HLERequestContext& ctx);
+    void LoadApplicationParameter(Kernel::HLERequestContext& ctx);
+    void DeleteAlarmSetting(Kernel::HLERequestContext& ctx);
     void Initialize(Kernel::HLERequestContext& ctx);
+
+    std::vector<AlarmSetting>::iterator GetAlarmFromId(AlarmSettingId alarm_setting_id);
+
+    std::vector<AlarmSetting> alarms{};
+    AlarmSettingId last_alarm_setting_id{};
 };
 
 } // namespace Service::Glue

src/core/loader/nso.cpp

@@ -128,11 +128,10 @@ std::optional<VAddr> AppLoader_NSO::LoadModule(Kernel::KProcess& process, Core::
 
     // Apply patches if necessary
     if (pm && (pm->HasNSOPatch(nso_header.build_id) || Settings::values.dump_nso)) {
-        std::vector<u8> pi_header;
+        std::vector<u8> pi_header(sizeof(NSOHeader) + program_image.size());
-        pi_header.insert(pi_header.begin(), reinterpret_cast<u8*>(&nso_header),
+        std::memcpy(pi_header.data(), &nso_header, sizeof(NSOHeader));
-                         reinterpret_cast<u8*>(&nso_header) + sizeof(NSOHeader));
+        std::memcpy(pi_header.data() + sizeof(NSOHeader), program_image.data(),
-        pi_header.insert(pi_header.begin() + sizeof(NSOHeader), program_image.data(),
+                    program_image.size());
-                         program_image.data() + program_image.size());
 
         pi_header = pm->PatchNSO(pi_header, nso_file.GetName());
 

src/input_common/drivers/sdl_driver.cpp

@@ -13,11 +13,11 @@
 namespace InputCommon {
 
 namespace {
-std::string GetGUID(SDL_Joystick* joystick) {
+Common::UUID GetGUID(SDL_Joystick* joystick) {
     const SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
-    char guid_str[33];
+    std::array<u8, 16> data{};
-    SDL_JoystickGetGUIDString(guid, guid_str, sizeof(guid_str));
+    std::memcpy(data.data(), guid.data, sizeof(data));
-    return guid_str;
+    return Common::UUID{data};
 }
 } // Anonymous namespace
 
@@ -31,9 +31,9 @@ static int SDLEventWatcher(void* user_data, SDL_Event* event) {
 
 class SDLJoystick {
 public:
-    SDLJoystick(std::string guid_, int port_, SDL_Joystick* joystick,
+    SDLJoystick(Common::UUID guid_, int port_, SDL_Joystick* joystick,
                 SDL_GameController* game_controller)
-        : guid{std::move(guid_)}, port{port_}, sdl_joystick{joystick, &SDL_JoystickClose},
+        : guid{guid_}, port{port_}, sdl_joystick{joystick, &SDL_JoystickClose},
           sdl_controller{game_controller, &SDL_GameControllerClose} {
         EnableMotion();
     }
@@ -120,7 +120,7 @@ public:
      */
     const PadIdentifier GetPadIdentifier() const {
         return {
-            .guid = Common::UUID{guid},
+            .guid = guid,
             .port = static_cast<std::size_t>(port),
             .pad = 0,
         };
@@ -129,7 +129,7 @@ public:
     /**
      * The guid of the joystick
      */
-    const std::string& GetGUID() const {
+    const Common::UUID& GetGUID() const {
         return guid;
     }
 
@@ -228,7 +228,7 @@ public:
     }
 
 private:
-    std::string guid;
+    Common::UUID guid;
     int port;
     std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> sdl_joystick;
     std::unique_ptr<SDL_GameController, decltype(&SDL_GameControllerClose)> sdl_controller;
@@ -240,7 +240,7 @@ private:
     BasicMotion motion;
 };
 
-std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickByGUID(const std::string& guid, int port) {
+std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickByGUID(const Common::UUID& guid, int port) {
     std::scoped_lock lock{joystick_map_mutex};
     const auto it = joystick_map.find(guid);
 
@@ -259,9 +259,13 @@ std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickByGUID(const std::string&
     return joystick_map[guid].emplace_back(std::move(joystick));
 }
 
+std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickByGUID(const std::string& guid, int port) {
+    return GetSDLJoystickByGUID(Common::UUID{guid}, port);
+}
+
 std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickBySDLID(SDL_JoystickID sdl_id) {
     auto sdl_joystick = SDL_JoystickFromInstanceID(sdl_id);
-    const std::string guid = GetGUID(sdl_joystick);
+    const auto guid = GetGUID(sdl_joystick);
 
     std::scoped_lock lock{joystick_map_mutex};
     const auto map_it = joystick_map.find(guid);
@@ -295,7 +299,7 @@ void SDLDriver::InitJoystick(int joystick_index) {
         return;
     }
 
-    const std::string guid = GetGUID(sdl_joystick);
+    const auto guid = GetGUID(sdl_joystick);
 
     std::scoped_lock lock{joystick_map_mutex};
     if (joystick_map.find(guid) == joystick_map.end()) {
@@ -324,7 +328,7 @@ void SDLDriver::InitJoystick(int joystick_index) {
 }
 
 void SDLDriver::CloseJoystick(SDL_Joystick* sdl_joystick) {
-    const std::string guid = GetGUID(sdl_joystick);
+    const auto guid = GetGUID(sdl_joystick);
 
     std::scoped_lock lock{joystick_map_mutex};
     // This call to guid is safe since the joystick is guaranteed to be in the map
@@ -470,7 +474,7 @@ std::vector<Common::ParamPackage> SDLDriver::GetInputDevices() const {
             devices.emplace_back(Common::ParamPackage{
                 {"engine", GetEngineName()},
                 {"display", std::move(name)},
-                {"guid", joystick->GetGUID()},
+                {"guid", joystick->GetGUID().RawString()},
                 {"port", std::to_string(joystick->GetPort())},
             });
             if (joystick->IsJoyconLeft()) {
@@ -493,8 +497,8 @@ std::vector<Common::ParamPackage> SDLDriver::GetInputDevices() const {
                 devices.emplace_back(Common::ParamPackage{
                     {"engine", GetEngineName()},
                     {"display", std::move(name)},
-                    {"guid", joystick->GetGUID()},
+                    {"guid", joystick->GetGUID().RawString()},
-                    {"guid2", joystick2->GetGUID()},
+                    {"guid2", joystick2->GetGUID().RawString()},
                     {"port", std::to_string(joystick->GetPort())},
                 });
             }
@@ -557,50 +561,50 @@ void SDLDriver::SendVibrations() {
     }
 }
 
-Common::ParamPackage SDLDriver::BuildAnalogParamPackageForButton(int port, std::string guid,
+Common::ParamPackage SDLDriver::BuildAnalogParamPackageForButton(int port, const Common::UUID& guid,
                                                                  s32 axis, float value) const {
     Common::ParamPackage params{};
     params.Set("engine", GetEngineName());
     params.Set("port", port);
-    params.Set("guid", std::move(guid));
+    params.Set("guid", guid.RawString());
     params.Set("axis", axis);
     params.Set("threshold", "0.5");
     params.Set("invert", value < 0 ? "-" : "+");
     return params;
 }
 
-Common::ParamPackage SDLDriver::BuildButtonParamPackageForButton(int port, std::string guid,
+Common::ParamPackage SDLDriver::BuildButtonParamPackageForButton(int port, const Common::UUID& guid,
                                                                  s32 button) const {
     Common::ParamPackage params{};
     params.Set("engine", GetEngineName());
     params.Set("port", port);
-    params.Set("guid", std::move(guid));
+    params.Set("guid", guid.RawString());
     params.Set("button", button);
     return params;
 }
 
-Common::ParamPackage SDLDriver::BuildHatParamPackageForButton(int port, std::string guid, s32 hat,
+Common::ParamPackage SDLDriver::BuildHatParamPackageForButton(int port, const Common::UUID& guid,
-                                                              u8 value) const {
+                                                              s32 hat, u8 value) const {
     Common::ParamPackage params{};
     params.Set("engine", GetEngineName());
     params.Set("port", port);
-    params.Set("guid", std::move(guid));
+    params.Set("guid", guid.RawString());
     params.Set("hat", hat);
     params.Set("direction", GetHatButtonName(value));
     return params;
 }
 
-Common::ParamPackage SDLDriver::BuildMotionParam(int port, std::string guid) const {
+Common::ParamPackage SDLDriver::BuildMotionParam(int port, const Common::UUID& guid) const {
     Common::ParamPackage params{};
     params.Set("engine", GetEngineName());
     params.Set("motion", 0);
     params.Set("port", port);
-    params.Set("guid", std::move(guid));
+    params.Set("guid", guid.RawString());
     return params;
 }
 
 Common::ParamPackage SDLDriver::BuildParamPackageForBinding(
-    int port, const std::string& guid, const SDL_GameControllerButtonBind& binding) const {
+    int port, const Common::UUID& guid, const SDL_GameControllerButtonBind& binding) const {
     switch (binding.bindType) {
     case SDL_CONTROLLER_BINDTYPE_NONE:
         break;

src/input_common/drivers/sdl_driver.h

@@ -47,6 +47,7 @@ public:
      * Check how many identical joysticks (by guid) were connected before the one with sdl_id and so
      * tie it to a SDLJoystick with the same guid and that port
      */
+    std::shared_ptr<SDLJoystick> GetSDLJoystickByGUID(const Common::UUID& guid, int port);
     std::shared_ptr<SDLJoystick> GetSDLJoystickByGUID(const std::string& guid, int port);
 
     std::vector<Common::ParamPackage> GetInputDevices() const override;
@@ -79,18 +80,18 @@ private:
     /// Takes all vibrations from the queue and sends the command to the controller
     void SendVibrations();
 
-    Common::ParamPackage BuildAnalogParamPackageForButton(int port, std::string guid, s32 axis,
+    Common::ParamPackage BuildAnalogParamPackageForButton(int port, const Common::UUID& guid,
-                                                          float value = 0.1f) const;
+                                                          s32 axis, float value = 0.1f) const;
-    Common::ParamPackage BuildButtonParamPackageForButton(int port, std::string guid,
+    Common::ParamPackage BuildButtonParamPackageForButton(int port, const Common::UUID& guid,
                                                           s32 button) const;
 
-    Common::ParamPackage BuildHatParamPackageForButton(int port, std::string guid, s32 hat,
+    Common::ParamPackage BuildHatParamPackageForButton(int port, const Common::UUID& guid, s32 hat,
                                                        u8 value) const;
 
-    Common::ParamPackage BuildMotionParam(int port, std::string guid) const;
+    Common::ParamPackage BuildMotionParam(int port, const Common::UUID& guid) const;
 
     Common::ParamPackage BuildParamPackageForBinding(
-        int port, const std::string& guid, const SDL_GameControllerButtonBind& binding) const;
+        int port, const Common::UUID& guid, const SDL_GameControllerButtonBind& binding) const;
 
     Common::ParamPackage BuildParamPackageForAnalog(PadIdentifier identifier, int axis_x,
                                                     int axis_y, float offset_x,
@@ -120,7 +121,7 @@ private:
     Common::SPSCQueue<VibrationRequest> vibration_queue;
 
     /// Map of GUID of a list of corresponding virtual Joysticks
-    std::unordered_map<std::string, std::vector<std::shared_ptr<SDLJoystick>>> joystick_map;
+    std::unordered_map<Common::UUID, std::vector<std::shared_ptr<SDLJoystick>>> joystick_map;
     std::mutex joystick_map_mutex;
 
     bool start_thread = false;

src/video_core/macro/macro_jit_x64.cpp

@@ -411,7 +411,7 @@ void MacroJITx64Impl::Compile_Branch(Macro::Opcode opcode) {
 
     Xbyak::Label end;
     auto value = Compile_GetRegister(opcode.src_a, eax);
-    test(value, value);
+    cmp(value, 0); // test(value, value);
     if (optimizer.has_delayed_pc) {
         switch (opcode.branch_condition) {
         case Macro::BranchCondition::Zero:

src/yuzu/main.cpp

@@ -1591,6 +1591,7 @@ void GMainWindow::ShutdownGame() {
 
     AllowOSSleep();
 
+    system->DetachDebugger();
     discord_rpc->Pause();
     emu_thread->RequestStop();
 

src/yuzu_cmd/config.cpp

@@ -344,6 +344,8 @@ void Config::ReadValues() {
     ReadSetting("Debugging", Settings::values.use_debug_asserts);
     ReadSetting("Debugging", Settings::values.use_auto_stub);
     ReadSetting("Debugging", Settings::values.disable_macro_jit);
+    ReadSetting("Debugging", Settings::values.use_gdbstub);
+    ReadSetting("Debugging", Settings::values.gdbstub_port);
 
     const auto title_list = sdl2_config->Get("AddOns", "title_ids", "");
     std::stringstream ss(title_list);

src/yuzu_cmd/default_ini.h

@@ -437,6 +437,11 @@ disable_macro_jit=false
 # Presents guest frames as they become available. Experimental.
 # false: Disabled (default), true: Enabled
 disable_fps_limit=false
+# Determines whether to enable the GDB stub and wait for the debugger to attach before running.
+# false: Disabled (default), true: Enabled
+use_gdbstub=false
+# The port to use for the GDB server, if it is enabled.
+gdbstub_port=6543
 
 [WebService]
 # Whether or not to enable telemetry

src/yuzu_cmd/emu_window/emu_window_sdl2.cpp

@@ -162,7 +162,15 @@ void EmuWindow_SDL2::WaitEvent() {
     SDL_Event event;
 
     if (!SDL_WaitEvent(&event)) {
-        LOG_CRITICAL(Frontend, "SDL_WaitEvent failed: {}", SDL_GetError());
+        const char* error = SDL_GetError();
+        if (!error || strcmp(error, "") == 0) {
+            // https://github.com/libsdl-org/SDL/issues/5780
+            // Sometimes SDL will return without actually having hit an error condition;
+            // just ignore it in this case.
+            return;
+        }
+
+        LOG_CRITICAL(Frontend, "SDL_WaitEvent failed: {}", error);
         exit(1);
     }
 

src/yuzu_cmd/yuzu.cpp

@@ -217,10 +217,19 @@ int main(int argc, char** argv) {
             [](VideoCore::LoadCallbackStage, size_t value, size_t total) {});
     }
 
+    system.RegisterExitCallback([&] {
+        // Just exit right away.
+        exit(0);
+    });
+
     void(system.Run());
+    if (system.DebuggerEnabled()) {
+        system.InitializeDebugger();
+    }
     while (emu_window->IsOpen()) {
         emu_window->WaitEvent();
     }
+    system.DetachDebugger();
     void(system.Pause());
     system.Shutdown();