32 files changed, 377 insertions, 407 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index af224166a..5d74e4546 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -31,7 +31,6 @@ set(SRCS
             file_sys/savedata_archive.cpp
             gdbstub/gdbstub.cpp
             hle/config_mem.cpp
-            hle/hle.cpp
             hle/applets/applet.cpp
             hle/applets/erreula.cpp
             hle/applets/mii_selector.cpp
@@ -155,7 +154,6 @@ set(SRCS
             tracer/recorder.cpp
             memory.cpp
             settings.cpp
-            system.cpp
             )
 
 set(HEADERS
@@ -196,7 +194,6 @@ set(HEADERS
             gdbstub/gdbstub.h
             hle/config_mem.h
             hle/function_wrappers.h
-            hle/hle.h
             hle/ipc.h
             hle/applets/applet.h
             hle/applets/erreula.h
@@ -325,7 +322,6 @@ set(HEADERS
             memory_setup.h
             mmio.h
             settings.h
-            system.h
             )
 
 include_directories(../../externals/dynarmic/include)
diff --git a/src/core/arm/arm_interface.h b/src/core/arm/arm_interface.h
index e466b21b2..ccd43f431 100644
--- a/src/core/arm/arm_interface.h
+++ b/src/core/arm/arm_interface.h
@@ -8,15 +8,22 @@
 #include "core/arm/skyeye_common/arm_regformat.h"
 #include "core/arm/skyeye_common/vfp/asm_vfp.h"
 
-namespace Core {
-struct ThreadContext;
-}
-
 /// Generic ARM11 CPU interface
 class ARM_Interface : NonCopyable {
 public:
     virtual ~ARM_Interface() {}
 
+    struct ThreadContext {
+        u32 cpu_registers[13];
+        u32 sp;
+        u32 lr;
+        u32 pc;
+        u32 cpsr;
+        u32 fpu_registers[64];
+        u32 fpscr;
+        u32 fpexc;
+    };
+
     /**
      * Runs the CPU for the given number of instructions
      * @param num_instructions Number of instructions to run
@@ -124,13 +131,13 @@ public:
      * Saves the current CPU context
      * @param ctx Thread context to save
      */
-    virtual void SaveContext(Core::ThreadContext& ctx) = 0;
+    virtual void SaveContext(ThreadContext& ctx) = 0;
 
     /**
      * Loads a CPU context
      * @param ctx Thread context to load
      */
-    virtual void LoadContext(const Core::ThreadContext& ctx) = 0;
+    virtual void LoadContext(const ThreadContext& ctx) = 0;
 
     /// Prepare core for thread reschedule (if needed to correctly handle state)
     virtual void PrepareReschedule() = 0;
diff --git a/src/core/arm/dynarmic/arm_dynarmic.cpp b/src/core/arm/dynarmic/arm_dynarmic.cpp
index fc4254670..5290382ff 100644
--- a/src/core/arm/dynarmic/arm_dynarmic.cpp
+++ b/src/core/arm/dynarmic/arm_dynarmic.cpp
@@ -137,7 +137,7 @@ void ARM_Dynarmic::ExecuteInstructions(int num_instructions) {
     AddTicks(ticks_executed);
 }
 
-void ARM_Dynarmic::SaveContext(Core::ThreadContext& ctx) {
+void ARM_Dynarmic::SaveContext(ARM_Interface::ThreadContext& ctx) {
     memcpy(ctx.cpu_registers, jit->Regs().data(), sizeof(ctx.cpu_registers));
     memcpy(ctx.fpu_registers, jit->ExtRegs().data(), sizeof(ctx.fpu_registers));
 
@@ -150,7 +150,7 @@ void ARM_Dynarmic::SaveContext(Core::ThreadContext& ctx) {
     ctx.fpexc = interpreter_state->VFP[VFP_FPEXC];
 }
 
-void ARM_Dynarmic::LoadContext(const Core::ThreadContext& ctx) {
+void ARM_Dynarmic::LoadContext(const ARM_Interface::ThreadContext& ctx) {
     memcpy(jit->Regs().data(), ctx.cpu_registers, sizeof(ctx.cpu_registers));
     memcpy(jit->ExtRegs().data(), ctx.fpu_registers, sizeof(ctx.fpu_registers));
 
diff --git a/src/core/arm/dynarmic/arm_dynarmic.h b/src/core/arm/dynarmic/arm_dynarmic.h
index ced86d29b..87ab53d81 100644
--- a/src/core/arm/dynarmic/arm_dynarmic.h
+++ b/src/core/arm/dynarmic/arm_dynarmic.h
@@ -10,10 +10,6 @@
 #include "core/arm/arm_interface.h"
 #include "core/arm/skyeye_common/armstate.h"
 
-namespace Core {
-struct ThreadContext;
-}
-
 class ARM_Dynarmic final : public ARM_Interface {
 public:
     ARM_Dynarmic(PrivilegeMode initial_mode);
@@ -33,8 +29,8 @@ public:
 
     void AddTicks(u64 ticks) override;
 
-    void SaveContext(Core::ThreadContext& ctx) override;
-    void LoadContext(const Core::ThreadContext& ctx) override;
+    void SaveContext(ThreadContext& ctx) override;
+    void LoadContext(const ThreadContext& ctx) override;
 
     void PrepareReschedule() override;
     void ExecuteInstructions(int num_instructions) override;
diff --git a/src/core/arm/dyncom/arm_dyncom.cpp b/src/core/arm/dyncom/arm_dyncom.cpp
index 34c7f945e..81f9bf99e 100644
--- a/src/core/arm/dyncom/arm_dyncom.cpp
+++ b/src/core/arm/dyncom/arm_dyncom.cpp
@@ -89,7 +89,7 @@ void ARM_DynCom::ExecuteInstructions(int num_instructions) {
     AddTicks(ticks_executed);
 }
 
-void ARM_DynCom::SaveContext(Core::ThreadContext& ctx) {
+void ARM_DynCom::SaveContext(ThreadContext& ctx) {
     memcpy(ctx.cpu_registers, state->Reg.data(), sizeof(ctx.cpu_registers));
     memcpy(ctx.fpu_registers, state->ExtReg.data(), sizeof(ctx.fpu_registers));
 
@@ -102,7 +102,7 @@ void ARM_DynCom::SaveContext(Core::ThreadContext& ctx) {
     ctx.fpexc = state->VFP[VFP_FPEXC];
 }
 
-void ARM_DynCom::LoadContext(const Core::ThreadContext& ctx) {
+void ARM_DynCom::LoadContext(const ThreadContext& ctx) {
     memcpy(state->Reg.data(), ctx.cpu_registers, sizeof(ctx.cpu_registers));
     memcpy(state->ExtReg.data(), ctx.fpu_registers, sizeof(ctx.fpu_registers));
 
diff --git a/src/core/arm/dyncom/arm_dyncom.h b/src/core/arm/dyncom/arm_dyncom.h
index 65db1f0f9..62c174f3c 100644
--- a/src/core/arm/dyncom/arm_dyncom.h
+++ b/src/core/arm/dyncom/arm_dyncom.h
@@ -10,10 +10,6 @@
 #include "core/arm/skyeye_common/arm_regformat.h"
 #include "core/arm/skyeye_common/armstate.h"
 
-namespace Core {
-struct ThreadContext;
-}
-
 class ARM_DynCom final : public ARM_Interface {
 public:
     ARM_DynCom(PrivilegeMode initial_mode);
@@ -36,8 +32,8 @@ public:
 
     void AddTicks(u64 ticks) override;
 
-    void SaveContext(Core::ThreadContext& ctx) override;
-    void LoadContext(const Core::ThreadContext& ctx) override;
+    void SaveContext(ThreadContext& ctx) override;
+    void LoadContext(const ThreadContext& ctx) override;
 
     void PrepareReschedule() override;
     void ExecuteInstructions(int num_instructions) override;
diff --git a/src/core/core.cpp b/src/core/core.cpp
index 6efa18159..ee5237096 100644
--- a/src/core/core.cpp
+++ b/src/core/core.cpp
@@ -3,6 +3,8 @@
 // Refer to the license.txt file included.
 
 #include <memory>
+
+#include "audio_core/audio_core.h"
 #include "common/logging/log.h"
 #include "core/arm/arm_interface.h"
 #include "core/arm/dynarmic/arm_dynarmic.h"
@@ -10,18 +12,24 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/gdbstub/gdbstub.h"
-#include "core/hle/hle.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/thread.h"
+#include "core/hle/service/service.h"
 #include "core/hw/hw.h"
+#include "core/loader/loader.h"
 #include "core/settings.h"
+#include "video_core/video_core.h"
 
 namespace Core {
 
-std::unique_ptr<ARM_Interface> g_app_core; ///< ARM11 application core
-std::unique_ptr<ARM_Interface> g_sys_core; ///< ARM11 system (OS) core
+/*static*/ System System::s_instance;
+
+System::ResultStatus System::RunLoop(int tight_loop) {
+    if (!cpu_core) {
+        return ResultStatus::ErrorNotInitialized;
+    }
 
-/// Run the core CPU loop
-void RunLoop(int tight_loop) {
     if (GDBStub::IsServerEnabled()) {
         GDBStub::HandlePacket();
 
@@ -32,7 +40,7 @@ void RunLoop(int tight_loop) {
                 GDBStub::SetCpuStepFlag(false);
                 tight_loop = 1;
             } else {
-                return;
+                return ResultStatus::Success;
             }
         }
     }
@@ -43,48 +51,114 @@ void RunLoop(int tight_loop) {
         LOG_TRACE(Core_ARM11, "Idling");
         CoreTiming::Idle();
         CoreTiming::Advance();
-        HLE::Reschedule(__func__);
+        PrepareReschedule();
     } else {
-        g_app_core->Run(tight_loop);
+        cpu_core->Run(tight_loop);
     }
 
     HW::Update();
-    if (HLE::IsReschedulePending()) {
-        Kernel::Reschedule();
-    }
+    Reschedule();
+
+    return ResultStatus::Success;
+}
+
+System::ResultStatus System::SingleStep() {
+    return RunLoop(1);
 }
 
-/// Step the CPU one instruction
-void SingleStep() {
-    RunLoop(1);
+System::ResultStatus System::Load(EmuWindow* emu_window, const std::string& filepath) {
+    if (app_loader) {
+        app_loader.reset();
+    }
+
+    app_loader = Loader::GetLoader(filepath);
+
+    if (!app_loader) {
+        LOG_CRITICAL(Core, "Failed to obtain loader for %s!", filepath.c_str());
+        return ResultStatus::ErrorGetLoader;
+    }
+
+    boost::optional<u32> system_mode{app_loader->LoadKernelSystemMode()};
+    if (!system_mode) {
+        LOG_CRITICAL(Core, "Failed to determine system mode!");
+        return ResultStatus::ErrorSystemMode;
+    }
+
+    ResultStatus init_result{Init(emu_window, system_mode.get())};
+    if (init_result != ResultStatus::Success) {
+        LOG_CRITICAL(Core, "Failed to initialize system (Error %i)!", init_result);
+        System::Shutdown();
+        return init_result;
+    }
+
+    const Loader::ResultStatus load_result{app_loader->Load()};
+    if (Loader::ResultStatus::Success != load_result) {
+        LOG_CRITICAL(Core, "Failed to load ROM (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::ErrorLoader;
+        }
+    }
+    return ResultStatus::Success;
 }
 
-/// Halt the core
-void Halt(const char* msg) {
-    // TODO(ShizZy): ImplementMe
+void System::PrepareReschedule() {
+    cpu_core->PrepareReschedule();
+    reschedule_pending = true;
 }
 
-/// Kill the core
-void Stop() {
-    // TODO(ShizZy): ImplementMe
+void System::Reschedule() {
+    if (!reschedule_pending) {
+        return;
+    }
+
+    reschedule_pending = false;
+    Kernel::Reschedule();
 }
 
-/// Initialize the core
-void Init() {
+System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
+    if (cpu_core) {
+        cpu_core.reset();
+    }
+
+    Memory::Init();
+
     if (Settings::values.use_cpu_jit) {
-        g_sys_core = std::make_unique<ARM_Dynarmic>(USER32MODE);
-        g_app_core = std::make_unique<ARM_Dynarmic>(USER32MODE);
+        cpu_core = std::make_unique<ARM_Dynarmic>(USER32MODE);
     } else {
-        g_sys_core = std::make_unique<ARM_DynCom>(USER32MODE);
-        g_app_core = std::make_unique<ARM_DynCom>(USER32MODE);
+        cpu_core = std::make_unique<ARM_DynCom>(USER32MODE);
+    }
+
+    CoreTiming::Init();
+    HW::Init();
+    Kernel::Init(system_mode);
+    Service::Init();
+    AudioCore::Init();
+    GDBStub::Init();
+
+    if (!VideoCore::Init(emu_window)) {
+        return ResultStatus::ErrorVideoCore;
     }
 
     LOG_DEBUG(Core, "Initialized OK");
+
+    return ResultStatus::Success;
 }
 
-void Shutdown() {
-    g_app_core.reset();
-    g_sys_core.reset();
+void System::Shutdown() {
+    GDBStub::Shutdown();
+    AudioCore::Shutdown();
+    VideoCore::Shutdown();
+    Service::Shutdown();
+    Kernel::Shutdown();
+    HW::Shutdown();
+    CoreTiming::Shutdown();
 
     LOG_DEBUG(Core, "Shutdown OK");
 }
diff --git a/src/core/core.h b/src/core/core.h
index ffbfa91c3..1015e8847 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -5,56 +5,118 @@
 #pragma once
 
 #include <memory>
+#include <string>
+
 #include "common/common_types.h"
+#include "core/memory.h"
 
+class EmuWindow;
 class ARM_Interface;
 
-////////////////////////////////////////////////////////////////////////////////////////////////////
+namespace Loader {
+class AppLoader;
+}
 
 namespace Core {
 
-struct ThreadContext {
-    u32 cpu_registers[13];
-    u32 sp;
-    u32 lr;
-    u32 pc;
-    u32 cpsr;
-    u32 fpu_registers[64];
-    u32 fpscr;
-    u32 fpexc;
+class System {
+public:
+    /**
+     * Gets the instance of the System singleton class.
+     * @returns Reference to the instance of the System singleton class.
+     */
+    static System& GetInstance() {
+        return s_instance;
+    }
+
+    /// Enumeration representing the return values of the System Initialize and Load process.
+    enum class ResultStatus : u32 {
+        Success,                    ///< Succeeded
+        ErrorNotInitialized,        ///< Error trying to use core prior to initialization
+        ErrorGetLoader,             ///< Error finding the correct application loader
+        ErrorSystemMode,            ///< Error determining the system mode
+        ErrorLoader,                ///< Error loading the specified application
+        ErrorLoader_ErrorEncrypted, ///< Error loading the specified application due to encryption
+        ErrorLoader_ErrorInvalidFormat, ///< Error loading the specified application due to an
+                                        /// invalid format
+        ErrorVideoCore,                 ///< Error in the video core
+    };
+
+    /**
+     * Run the core CPU loop
+     * This function runs the core for the specified number of CPU instructions before trying to
+     * update hardware. This is much faster than SingleStep (and should be equivalent), as the CPU
+     * is not required to do a full dispatch with each instruction. NOTE: the number of instructions
+     * requested is not guaranteed to run, as this will be interrupted preemptively if a hardware
+     * update is requested (e.g. on a thread switch).
+     * @param tight_loop Number of instructions to execute.
+     * @return Result status, indicating whethor or not the operation succeeded.
+     */
+    ResultStatus RunLoop(int tight_loop = 1000);
+
+    /**
+     * Step the CPU one instruction
+     * @return Result status, indicating whethor or not the operation succeeded.
+     */
+    ResultStatus SingleStep();
+
+    /// Shutdown the emulated system.
+    void Shutdown();
+
+    /**
+     * Load an executable application.
+     * @param emu_window Pointer to the host-system window used for video output and keyboard input.
+     * @param filepath String path to the executable application to load on the host file system.
+     * @returns ResultStatus code, indicating if the operation succeeded.
+     */
+    ResultStatus Load(EmuWindow* emu_window, const std::string& filepath);
+
+    /**
+     * Indicates if the emulated system is powered on (all subsystems initialized and able to run an
+     * application).
+     * @returns True if the emulated system is powered on, otherwise false.
+     */
+    bool IsPoweredOn() const {
+        return cpu_core != nullptr;
+    }
+
+    /// Prepare the core emulation for a reschedule
+    void PrepareReschedule();
+
+    /**
+     * Gets a reference to the emulated CPU.
+     * @returns A reference to the emulated CPU.
+     */
+    ARM_Interface& CPU() {
+        return *cpu_core;
+    }
+
+private:
+    /**
+     * Initialize the emulated system.
+     * @param emu_window Pointer to the host-system window used for video output and keyboard input.
+     * @param system_mode The system mode.
+     * @return ResultStatus code, indicating if the operation succeeded.
+     */
+    ResultStatus Init(EmuWindow* emu_window, u32 system_mode);
+
+    /// Reschedule the core emulation
+    void Reschedule();
+
+    /// AppLoader used to load the current executing application
+    std::unique_ptr<Loader::AppLoader> app_loader;
+
+    ///< ARM11 CPU core
+    std::unique_ptr<ARM_Interface> cpu_core;
+
+    /// When true, signals that a reschedule should happen
+    bool reschedule_pending{};
+
+    static System s_instance;
 };
 
-extern std::unique_ptr<ARM_Interface> g_app_core; ///< ARM11 application core
-extern std::unique_ptr<ARM_Interface> g_sys_core; ///< ARM11 system (OS) core
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-
-/// Start the core
-void Start();
-
-/**
- * Run the core CPU loop
- * This function runs the core for the specified number of CPU instructions before trying to update
- * hardware. This is much faster than SingleStep (and should be equivalent), as the CPU is not
- * required to do a full dispatch with each instruction. NOTE: the number of instructions requested
- * is not guaranteed to run, as this will be interrupted preemptively if a hardware update is
- * requested (e.g. on a thread switch).
- */
-void RunLoop(int tight_loop = 1000);
-
-/// Step the CPU one instruction
-void SingleStep();
-
-/// Halt the core
-void Halt(const char* msg);
-
-/// Kill the core
-void Stop();
-
-/// Initialize the core
-void Init();
-
-/// Shutdown the core
-void Shutdown();
+static ARM_Interface& CPU() {
+    return System::GetInstance().CPU();
+}
 
-} // namespace
+} // namespace Core
diff --git a/src/core/core_timing.cpp b/src/core/core_timing.cpp
index 5220b55ea..a437d0823 100644
--- a/src/core/core_timing.cpp
+++ b/src/core/core_timing.cpp
@@ -130,7 +130,6 @@ int RegisterEvent(const char* name, TimedCallback callback) {
 
 static void AntiCrashCallback(u64 userdata, int cycles_late) {
     LOG_CRITICAL(Core_Timing, "Savestate broken: an unregistered event was called.");
-    Core::Halt("invalid timing events");
 }
 
 void RestoreRegisterEvent(int event_type, const char* name, TimedCallback callback) {
@@ -147,7 +146,7 @@ void UnregisterAllEvents() {
 }
 
 void Init() {
-    Core::g_app_core->down_count = INITIAL_SLICE_LENGTH;
+    Core::CPU().down_count = INITIAL_SLICE_LENGTH;
     g_slice_length = INITIAL_SLICE_LENGTH;
     global_timer = 0;
     idled_cycles = 0;
@@ -187,7 +186,7 @@ void Shutdown() {
 }
 
 u64 GetTicks() {
-    return (u64)global_timer + g_slice_length - Core::g_app_core->down_count;
+    return (u64)global_timer + g_slice_length - Core::CPU().down_count;
 }
 
 u64 GetIdleTicks() {
@@ -461,18 +460,18 @@ void MoveEvents() {
 }
 
 void ForceCheck() {
-    s64 cycles_executed = g_slice_length - Core::g_app_core->down_count;
+    s64 cycles_executed = g_slice_length - Core::CPU().down_count;
     global_timer += cycles_executed;
     // This will cause us to check for new events immediately.
-    Core::g_app_core->down_count = 0;
+    Core::CPU().down_count = 0;
     // But let's not eat a bunch more time in Advance() because of this.
     g_slice_length = 0;
 }
 
 void Advance() {
-    s64 cycles_executed = g_slice_length - Core::g_app_core->down_count;
+    s64 cycles_executed = g_slice_length - Core::CPU().down_count;
     global_timer += cycles_executed;
-    Core::g_app_core->down_count = g_slice_length;
+    Core::CPU().down_count = g_slice_length;
 
     if (has_ts_events)
         MoveEvents();
@@ -481,7 +480,7 @@ void Advance() {
     if (!first) {
         if (g_slice_length < 10000) {
             g_slice_length += 10000;
-            Core::g_app_core->down_count += g_slice_length;
+            Core::CPU().down_count += g_slice_length;
         }
     } else {
         // Note that events can eat cycles as well.
@@ -491,7 +490,7 @@ void Advance() {
 
         const int diff = target - g_slice_length;
         g_slice_length += diff;
-        Core::g_app_core->down_count += diff;
+        Core::CPU().down_count += diff;
     }
     if (advance_callback)
         advance_callback(static_cast<int>(cycles_executed));
@@ -507,12 +506,12 @@ void LogPendingEvents() {
 }
 
 void Idle(int max_idle) {
-    s64 cycles_down = Core::g_app_core->down_count;
+    s64 cycles_down = Core::CPU().down_count;
     if (max_idle != 0 && cycles_down > max_idle)
         cycles_down = max_idle;
 
     if (first && cycles_down > 0) {
-        s64 cycles_executed = g_slice_length - Core::g_app_core->down_count;
+        s64 cycles_executed = g_slice_length - Core::CPU().down_count;
         s64 cycles_next_event = first->time - global_timer;
 
         if (cycles_next_event < cycles_executed + cycles_down) {
@@ -527,9 +526,9 @@ void Idle(int max_idle) {
               cycles_down / (float)(g_clock_rate_arm11 * 0.001f));
 
     idled_cycles += cycles_down;
-    Core::g_app_core->down_count -= cycles_down;
-    if (Core::g_app_core->down_count == 0)
-        Core::g_app_core->down_count = -1;
+    Core::CPU().down_count -= cycles_down;
+    if (Core::CPU().down_count == 0)
+        Core::CPU().down_count = -1;
 }
 
 std::string GetScheduledEventsSummary() {
diff --git a/src/core/file_sys/archive_extsavedata.cpp b/src/core/file_sys/archive_extsavedata.cpp
index 5b172df4a..51ce78435 100644
--- a/src/core/file_sys/archive_extsavedata.cpp
+++ b/src/core/file_sys/archive_extsavedata.cpp
@@ -141,11 +141,10 @@ std::string GetExtSaveDataPath(const std::string& mount_point, const Path& path)
 
 std::string GetExtDataContainerPath(const std::string& mount_point, bool shared) {
     if (shared)
-        return Common::StringFromFormat("%sdata/%s/extdata/", mount_point.c_str(),
-                                        SYSTEM_ID.c_str());
+        return Common::StringFromFormat("%sdata/%s/extdata/", mount_point.c_str(), SYSTEM_ID);
 
-    return Common::StringFromFormat("%sNintendo 3DS/%s/%s/extdata/", mount_point.c_str(),
-                                    SYSTEM_ID.c_str(), SDCARD_ID.c_str());
+    return Common::StringFromFormat("%sNintendo 3DS/%s/%s/extdata/", mount_point.c_str(), SYSTEM_ID,
+                                    SDCARD_ID);
 }
 
 Path ConstructExtDataBinaryPath(u32 media_type, u32 high, u32 low) {
diff --git a/src/core/file_sys/archive_ncch.cpp b/src/core/file_sys/archive_ncch.cpp
index 6f1aadfc3..89455e39c 100644
--- a/src/core/file_sys/archive_ncch.cpp
+++ b/src/core/file_sys/archive_ncch.cpp
@@ -19,7 +19,7 @@
 namespace FileSys {
 
 static std::string GetNCCHContainerPath(const std::string& nand_directory) {
-    return Common::StringFromFormat("%s%s/title/", nand_directory.c_str(), SYSTEM_ID.c_str());
+    return Common::StringFromFormat("%s%s/title/", nand_directory.c_str(), SYSTEM_ID);
 }
 
 static std::string GetNCCHPath(const std::string& mount_point, u32 high, u32 low) {
diff --git a/src/core/file_sys/archive_source_sd_savedata.cpp b/src/core/file_sys/archive_source_sd_savedata.cpp
index 287322d3e..e01357891 100644
--- a/src/core/file_sys/archive_source_sd_savedata.cpp
+++ b/src/core/file_sys/archive_source_sd_savedata.cpp
@@ -18,7 +18,7 @@ namespace {
 
 std::string GetSaveDataContainerPath(const std::string& sdmc_directory) {
     return Common::StringFromFormat("%sNintendo 3DS/%s/%s/title/", sdmc_directory.c_str(),
-                                    SYSTEM_ID.c_str(), SDCARD_ID.c_str());
+                                    SYSTEM_ID, SDCARD_ID);
 }
 
 std::string GetSaveDataPath(const std::string& mount_location, u64 program_id) {
diff --git a/src/core/file_sys/archive_systemsavedata.cpp b/src/core/file_sys/archive_systemsavedata.cpp
index 54e7793e0..8986b5c0e 100644
--- a/src/core/file_sys/archive_systemsavedata.cpp
+++ b/src/core/file_sys/archive_systemsavedata.cpp
@@ -26,7 +26,7 @@ std::string GetSystemSaveDataPath(const std::string& mount_point, const Path& pa
 }
 
 std::string GetSystemSaveDataContainerPath(const std::string& mount_point) {
-    return Common::StringFromFormat("%sdata/%s/sysdata/", mount_point.c_str(), SYSTEM_ID.c_str());
+    return Common::StringFromFormat("%sdata/%s/sysdata/", mount_point.c_str(), SYSTEM_ID);
 }
 
 Path ConstructSystemSaveDataBinaryPath(u32 high, u32 low) {
diff --git a/src/core/gdbstub/gdbstub.cpp b/src/core/gdbstub/gdbstub.cpp
index f96cbde64..d88e25073 100644
--- a/src/core/gdbstub/gdbstub.cpp
+++ b/src/core/gdbstub/gdbstub.cpp
@@ -35,6 +35,7 @@
 #include "core/arm/arm_interface.h"
 #include "core/core.h"
 #include "core/gdbstub/gdbstub.h"
+#include "core/loader/loader.h"
 #include "core/memory.h"
 
 const int GDB_BUFFER_SIZE = 10000;
@@ -449,9 +450,9 @@ static void SendSignal(u32 signal) {
 
     latest_signal = signal;
 
-    std::string buffer = Common::StringFromFormat("T%02x%02x:%08x;%02x:%08x;", latest_signal, 15,
-                                                  htonl(Core::g_app_core->GetPC()), 13,
-                                                  htonl(Core::g_app_core->GetReg(13)));
+    std::string buffer =
+        Common::StringFromFormat("T%02x%02x:%08x;%02x:%08x;", latest_signal, 15,
+                                 htonl(Core::CPU().GetPC()), 13, htonl(Core::CPU().GetReg(13)));
     LOG_DEBUG(Debug_GDBStub, "Response: %s", buffer.c_str());
     SendReply(buffer.c_str());
 }
@@ -538,15 +539,15 @@ static void ReadRegister() {
     }
 
     if (id <= R15_REGISTER) {
-        IntToGdbHex(reply, Core::g_app_core->GetReg(id));
+        IntToGdbHex(reply, Core::CPU().GetReg(id));
     } else if (id == CPSR_REGISTER) {
-        IntToGdbHex(reply, Core::g_app_core->GetCPSR());
+        IntToGdbHex(reply, Core::CPU().GetCPSR());
     } else if (id > CPSR_REGISTER && id < FPSCR_REGISTER) {
-        IntToGdbHex(reply, Core::g_app_core->GetVFPReg(
+        IntToGdbHex(reply, Core::CPU().GetVFPReg(
                                id - CPSR_REGISTER -
                                1)); // VFP registers should start at 26, so one after CSPR_REGISTER
     } else if (id == FPSCR_REGISTER) {
-        IntToGdbHex(reply, Core::g_app_core->GetVFPSystemReg(VFP_FPSCR)); // Get FPSCR
+        IntToGdbHex(reply, Core::CPU().GetVFPSystemReg(VFP_FPSCR)); // Get FPSCR
         IntToGdbHex(reply + 8, 0);
     } else {
         return SendReply("E01");
@@ -563,22 +564,22 @@ static void ReadRegisters() {
     u8* bufptr = buffer;
 
     for (int reg = 0; reg <= R15_REGISTER; reg++) {
-        IntToGdbHex(bufptr + reg * CHAR_BIT, Core::g_app_core->GetReg(reg));
+        IntToGdbHex(bufptr + reg * CHAR_BIT, Core::CPU().GetReg(reg));
     }
 
     bufptr += (16 * CHAR_BIT);
 
-    IntToGdbHex(bufptr, Core::g_app_core->GetCPSR());
+    IntToGdbHex(bufptr, Core::CPU().GetCPSR());
 
     bufptr += CHAR_BIT;
 
     for (int reg = 0; reg <= 31; reg++) {
-        IntToGdbHex(bufptr + reg * CHAR_BIT, Core::g_app_core->GetVFPReg(reg));
+        IntToGdbHex(bufptr + reg * CHAR_BIT, Core::CPU().GetVFPReg(reg));
     }
 
     bufptr += (32 * CHAR_BIT);
 
-    IntToGdbHex(bufptr, Core::g_app_core->GetVFPSystemReg(VFP_FPSCR));
+    IntToGdbHex(bufptr, Core::CPU().GetVFPSystemReg(VFP_FPSCR));
 
     SendReply(reinterpret_cast<char*>(buffer));
 }
@@ -595,13 +596,13 @@ static void WriteRegister() {
     }
 
     if (id <= R15_REGISTER) {
-        Core::g_app_core->SetReg(id, GdbHexToInt(buffer_ptr));
+        Core::CPU().SetReg(id, GdbHexToInt(buffer_ptr));
     } else if (id == CPSR_REGISTER) {
-        Core::g_app_core->SetCPSR(GdbHexToInt(buffer_ptr));
+        Core::CPU().SetCPSR(GdbHexToInt(buffer_ptr));
     } else if (id > CPSR_REGISTER && id < FPSCR_REGISTER) {
-        Core::g_app_core->SetVFPReg(id - CPSR_REGISTER - 1, GdbHexToInt(buffer_ptr));
+        Core::CPU().SetVFPReg(id - CPSR_REGISTER - 1, GdbHexToInt(buffer_ptr));
     } else if (id == FPSCR_REGISTER) {
-        Core::g_app_core->SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr));
+        Core::CPU().SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr));
     } else {
         return SendReply("E01");
     }
@@ -618,20 +619,19 @@ static void WriteRegisters() {
 
     for (int i = 0, reg = 0; reg <= FPSCR_REGISTER; i++, reg++) {
         if (reg <= R15_REGISTER) {
-            Core::g_app_core->SetReg(reg, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+            Core::CPU().SetReg(reg, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
         } else if (reg == CPSR_REGISTER) {
-            Core::g_app_core->SetCPSR(GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+            Core::CPU().SetCPSR(GdbHexToInt(buffer_ptr + i * CHAR_BIT));
         } else if (reg == CPSR_REGISTER - 1) {
             // Dummy FPA register, ignore
         } else if (reg < CPSR_REGISTER) {
             // Dummy FPA registers, ignore
             i += 2;
         } else if (reg > CPSR_REGISTER && reg < FPSCR_REGISTER) {
-            Core::g_app_core->SetVFPReg(reg - CPSR_REGISTER - 1,
-                                        GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+            Core::CPU().SetVFPReg(reg - CPSR_REGISTER - 1, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
             i++; // Skip padding
         } else if (reg == FPSCR_REGISTER) {
-            Core::g_app_core->SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
+            Core::CPU().SetVFPSystemReg(VFP_FPSCR, GdbHexToInt(buffer_ptr + i * CHAR_BIT));
         }
     }
 
@@ -908,7 +908,7 @@ void ToggleServer(bool status) {
         server_enabled = status;
 
         // Start server
-        if (!IsConnected() && Core::g_sys_core != nullptr) {
+        if (!IsConnected() && Core::System().GetInstance().IsPoweredOn()) {
             Init();
         }
     } else {
diff --git a/src/core/hle/function_wrappers.h b/src/core/hle/function_wrappers.h
index 8ce0f6d2b..7875971ce 100644
--- a/src/core/hle/function_wrappers.h
+++ b/src/core/hle/function_wrappers.h
@@ -7,14 +7,14 @@
 #include "common/common_types.h"
 #include "core/arm/arm_interface.h"
 #include "core/core.h"
-#include "core/hle/hle.h"
+#include "core/hle/kernel/kernel.h"
 #include "core/hle/result.h"
 #include "core/hle/svc.h"
 #include "core/memory.h"
 
 namespace HLE {
 
-#define PARAM(n) Core::g_app_core->GetReg(n)
+#define PARAM(n) Core::CPU().GetReg(n)
 
 /// An invalid result code that is meant to be overwritten when a thread resumes from waiting
 static const ResultCode RESULT_INVALID(0xDEADC0DE);
@@ -24,7 +24,7 @@ static const ResultCode RESULT_INVALID(0xDEADC0DE);
  * @param res Result to return
  */
 static inline void FuncReturn(u32 res) {
-    Core::g_app_core->SetReg(0, res);
+    Core::CPU().SetReg(0, res);
 }
 
 /**
@@ -33,8 +33,8 @@ static inline void FuncReturn(u32 res) {
  * @todo Verify that this function is correct
  */
 static inline void FuncReturn64(u64 res) {
-    Core::g_app_core->SetReg(0, (u32)(res & 0xFFFFFFFF));
-    Core::g_app_core->SetReg(1, (u32)((res >> 32) & 0xFFFFFFFF));
+    Core::CPU().SetReg(0, (u32)(res & 0xFFFFFFFF));
+    Core::CPU().SetReg(1, (u32)((res >> 32) & 0xFFFFFFFF));
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -49,7 +49,7 @@ template <ResultCode func(u32*, u32, u32, u32, u32, u32)>
 void Wrap() {
     u32 param_1 = 0;
     u32 retval = func(&param_1, PARAM(0), PARAM(1), PARAM(2), PARAM(3), PARAM(4)).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -57,19 +57,19 @@ template <ResultCode func(u32*, s32, u32, u32, u32, s32)>
 void Wrap() {
     u32 param_1 = 0;
     u32 retval = func(&param_1, PARAM(0), PARAM(1), PARAM(2), PARAM(3), PARAM(4)).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
 template <ResultCode func(s32*, u32*, s32, bool, s64)>
 void Wrap() {
     s32 param_1 = 0;
-    s32 retval = func(&param_1, (Handle*)Memory::GetPointer(PARAM(1)), (s32)PARAM(2),
+    s32 retval = func(&param_1, (Kernel::Handle*)Memory::GetPointer(PARAM(1)), (s32)PARAM(2),
                       (PARAM(3) != 0), (((s64)PARAM(4) << 32) | PARAM(0)))
                      .raw;
 
     if (retval != RESULT_INVALID.raw) {
-        Core::g_app_core->SetReg(1, (u32)param_1);
+        Core::CPU().SetReg(1, (u32)param_1);
         FuncReturn(retval);
     }
 }
@@ -84,7 +84,7 @@ template <ResultCode func(u32*)>
 void Wrap() {
     u32 param_1 = 0;
     u32 retval = func(&param_1).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -102,24 +102,24 @@ void Wrap() {
     MemoryInfo memory_info = {};
     PageInfo page_info = {};
     u32 retval = func(&memory_info, &page_info, PARAM(2)).raw;
-    Core::g_app_core->SetReg(1, memory_info.base_address);
-    Core::g_app_core->SetReg(2, memory_info.size);
-    Core::g_app_core->SetReg(3, memory_info.permission);
-    Core::g_app_core->SetReg(4, memory_info.state);
-    Core::g_app_core->SetReg(5, page_info.flags);
+    Core::CPU().SetReg(1, memory_info.base_address);
+    Core::CPU().SetReg(2, memory_info.size);
+    Core::CPU().SetReg(3, memory_info.permission);
+    Core::CPU().SetReg(4, memory_info.state);
+    Core::CPU().SetReg(5, page_info.flags);
     FuncReturn(retval);
 }
 
-template <ResultCode func(MemoryInfo*, PageInfo*, Handle, u32)>
+template <ResultCode func(MemoryInfo*, PageInfo*, Kernel::Handle, u32)>
 void Wrap() {
     MemoryInfo memory_info = {};
     PageInfo page_info = {};
     u32 retval = func(&memory_info, &page_info, PARAM(2), PARAM(3)).raw;
-    Core::g_app_core->SetReg(1, memory_info.base_address);
-    Core::g_app_core->SetReg(2, memory_info.size);
-    Core::g_app_core->SetReg(3, memory_info.permission);
-    Core::g_app_core->SetReg(4, memory_info.state);
-    Core::g_app_core->SetReg(5, page_info.flags);
+    Core::CPU().SetReg(1, memory_info.base_address);
+    Core::CPU().SetReg(2, memory_info.size);
+    Core::CPU().SetReg(3, memory_info.permission);
+    Core::CPU().SetReg(4, memory_info.state);
+    Core::CPU().SetReg(5, page_info.flags);
     FuncReturn(retval);
 }
 
@@ -127,7 +127,7 @@ template <ResultCode func(s32*, u32)>
 void Wrap() {
     s32 param_1 = 0;
     u32 retval = func(&param_1, PARAM(1)).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -140,7 +140,7 @@ template <ResultCode func(u32*, u32)>
 void Wrap() {
     u32 param_1 = 0;
     u32 retval = func(&param_1, PARAM(1)).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -160,7 +160,7 @@ template <ResultCode func(u32*, const char*)>
 void Wrap() {
     u32 param_1 = 0;
     u32 retval = func(&param_1, (char*)Memory::GetPointer(PARAM(1))).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -168,7 +168,7 @@ template <ResultCode func(u32*, s32, s32)>
 void Wrap() {
     u32 param_1 = 0;
     u32 retval = func(&param_1, PARAM(1), PARAM(2)).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -176,7 +176,7 @@ template <ResultCode func(s32*, u32, s32)>
 void Wrap() {
     s32 param_1 = 0;
     u32 retval = func(&param_1, PARAM(1), PARAM(2)).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -184,8 +184,8 @@ template <ResultCode func(s64*, u32, s32)>
 void Wrap() {
     s64 param_1 = 0;
     u32 retval = func(&param_1, PARAM(1), PARAM(2)).raw;
-    Core::g_app_core->SetReg(1, (u32)param_1);
-    Core::g_app_core->SetReg(2, (u32)(param_1 >> 32));
+    Core::CPU().SetReg(1, (u32)param_1);
+    Core::CPU().SetReg(2, (u32)(param_1 >> 32));
     FuncReturn(retval);
 }
 
@@ -194,7 +194,7 @@ void Wrap() {
     u32 param_1 = 0;
     // The last parameter is passed in R0 instead of R4
     u32 retval = func(&param_1, PARAM(1), PARAM(2), PARAM(3), PARAM(0)).raw;
-    Core::g_app_core->SetReg(1, param_1);
+    Core::CPU().SetReg(1, param_1);
     FuncReturn(retval);
 }
 
@@ -205,30 +205,30 @@ void Wrap() {
     FuncReturn(func(PARAM(0), param1, param2).raw);
 }
 
-template <ResultCode func(s64*, Handle, u32)>
+template <ResultCode func(s64*, Kernel::Handle, u32)>
 void Wrap() {
     s64 param_1 = 0;
     u32 retval = func(&param_1, PARAM(1), PARAM(2)).raw;
-    Core::g_app_core->SetReg(1, (u32)param_1);
-    Core::g_app_core->SetReg(2, (u32)(param_1 >> 32));
+    Core::CPU().SetReg(1, (u32)param_1);
+    Core::CPU().SetReg(2, (u32)(param_1 >> 32));
     FuncReturn(retval);
 }
 
-template <ResultCode func(Handle, u32)>
+template <ResultCode func(Kernel::Handle, u32)>
 void Wrap() {
     FuncReturn(func(PARAM(0), PARAM(1)).raw);
 }
 
-template <ResultCode func(Handle*, Handle*, const char*, u32)>
+template <ResultCode func(Kernel::Handle*, Kernel::Handle*, const char*, u32)>
 void Wrap() {
-    Handle param_1 = 0;
-    Handle param_2 = 0;
+    Kernel::Handle param_1 = 0;
+    Kernel::Handle param_2 = 0;
     u32 retval = func(&param_1, &param_2,
                       reinterpret_cast<const char*>(Memory::GetPointer(PARAM(2))), PARAM(3))
                      .raw;
     // The first out parameter is moved into R2 and the second is moved into R1.
-    Core::g_app_core->SetReg(1, param_2);
-    Core::g_app_core->SetReg(2, param_1);
+    Core::CPU().SetReg(1, param_2);
+    Core::CPU().SetReg(2, param_1);
     FuncReturn(retval);
 }
 
diff --git a/src/core/hle/hle.cpp b/src/core/hle/hle.cpp
index 41b772163..d73d98a70 100644
--- a/src/core/hle/hle.cpp
+++ b/src/core/hle/hle.cpp
@@ -26,9 +26,9 @@ void Reschedule(const char* reason) {
     // routines. This simulates that time by artificially advancing the number of CPU "ticks".
     // The value was chosen empirically, it seems to work well enough for everything tested, but
     // is likely not ideal. We should find a more accurate way to simulate timing with HLE.
-    Core::g_app_core->AddTicks(4000);
+    Core::AppCore().AddTicks(4000);
 
-    Core::g_app_core->PrepareReschedule();
+    Core::AppCore().PrepareReschedule();
 
     reschedule = true;
 }
diff --git a/src/core/hle/hle.h b/src/core/hle/hle.h
deleted file mode 100644
index 23859e129..000000000
--- a/src/core/hle/hle.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include "common/common_types.h"
-
-typedef u32 Handle;
-typedef s32 Result;
-
-const Handle INVALID_HANDLE = 0;
-
-namespace HLE {
-
-void Reschedule(const char* reason);
-bool IsReschedulePending();
-void DoneRescheduling();
-
-void Init();
-void Shutdown();
-
-} // namespace
diff --git a/src/core/hle/kernel/address_arbiter.cpp b/src/core/hle/kernel/address_arbiter.cpp
index b5a0cc3a3..01fab123e 100644
--- a/src/core/hle/kernel/address_arbiter.cpp
+++ b/src/core/hle/kernel/address_arbiter.cpp
@@ -4,7 +4,6 @@
 
 #include "common/common_types.h"
 #include "common/logging/log.h"
-#include "core/hle/hle.h"
 #include "core/hle/kernel/address_arbiter.h"
 #include "core/hle/kernel/thread.h"
 #include "core/memory.h"
diff --git a/src/core/hle/kernel/kernel.h b/src/core/hle/kernel/kernel.h
index 1adcf6c71..9503e7d04 100644
--- a/src/core/hle/kernel/kernel.h
+++ b/src/core/hle/kernel/kernel.h
@@ -11,11 +11,12 @@
 #include <vector>
 #include <boost/smart_ptr/intrusive_ptr.hpp>
 #include "common/common_types.h"
-#include "core/hle/hle.h"
 #include "core/hle/result.h"
 
 namespace Kernel {
 
+using Handle = u32;
+
 class Thread;
 
 // TODO: Verify code
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index 18b696f72..5fb95dada 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -14,7 +14,6 @@
 #include "core/arm/skyeye_common/armstate.h"
 #include "core/core.h"
 #include "core/core_timing.h"
-#include "core/hle/hle.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/mutex.h"
@@ -188,7 +187,7 @@ static void SwitchContext(Thread* new_thread) {
     // Save context for previous thread
     if (previous_thread) {
         previous_thread->last_running_ticks = CoreTiming::GetTicks();
-        Core::g_app_core->SaveContext(previous_thread->context);
+        Core::CPU().SaveContext(previous_thread->context);
 
         if (previous_thread->status == THREADSTATUS_RUNNING) {
             // This is only the case when a reschedule is triggered without the current thread
@@ -214,8 +213,8 @@ static void SwitchContext(Thread* new_thread) {
         // Restores thread to its nominal priority if it has been temporarily changed
         new_thread->current_priority = new_thread->nominal_priority;
 
-        Core::g_app_core->LoadContext(new_thread->context);
-        Core::g_app_core->SetCP15Register(CP15_THREAD_URO, new_thread->GetTLSAddress());
+        Core::CPU().LoadContext(new_thread->context);
+        Core::CPU().SetCP15Register(CP15_THREAD_URO, new_thread->GetTLSAddress());
     } else {
         current_thread = nullptr;
     }
@@ -330,7 +329,7 @@ void Thread::ResumeFromWait() {
 
     ready_queue.push_back(current_priority, this);
     status = THREADSTATUS_READY;
-    HLE::Reschedule(__func__);
+    Core::System::GetInstance().PrepareReschedule();
 }
 
 /**
@@ -385,9 +384,9 @@ std::tuple<u32, u32, bool> GetFreeThreadLocalSlot(std::vector<std::bitset<8>>& t
  * @param entry_point Address of entry point for execution
  * @param arg User argument for thread
  */
-static void ResetThreadContext(Core::ThreadContext& context, u32 stack_top, u32 entry_point,
-                               u32 arg) {
-    memset(&context, 0, sizeof(Core::ThreadContext));
+static void ResetThreadContext(ARM_Interface::ThreadContext& context, u32 stack_top,
+                               u32 entry_point, u32 arg) {
+    memset(&context, 0, sizeof(ARM_Interface::ThreadContext));
 
     context.cpu_registers[0] = arg;
     context.pc = entry_point;
@@ -545,8 +544,6 @@ void Reschedule() {
     Thread* cur = GetCurrentThread();
     Thread* next = PopNextReadyThread();
 
-    HLE::DoneRescheduling();
-
     if (cur && next) {
         LOG_TRACE(Kernel, "context switch %u -> %u", cur->GetObjectId(), next->GetObjectId());
     } else if (cur) {
diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h
index d4fefc573..c77ac644d 100644
--- a/src/core/hle/kernel/thread.h
+++ b/src/core/hle/kernel/thread.h
@@ -10,8 +10,8 @@
 #include <boost/container/flat_map.hpp>
 #include <boost/container/flat_set.hpp>
 #include "common/common_types.h"
+#include "core/arm/arm_interface.h"
 #include "core/core.h"
-#include "core/hle/hle.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/result.h"
 
@@ -158,7 +158,7 @@ public:
         return !wait_objects.empty();
     }
 
-    Core::ThreadContext context;
+    ARM_Interface::ThreadContext context;
 
     u32 thread_id;
 
diff --git a/src/core/hle/service/fs/archive.cpp b/src/core/hle/service/fs/archive.cpp
index 09205e4b2..6cddc1fdb 100644
--- a/src/core/hle/service/fs/archive.cpp
+++ b/src/core/hle/service/fs/archive.cpp
@@ -23,7 +23,6 @@
 #include "core/file_sys/archive_systemsavedata.h"
 #include "core/file_sys/directory_backend.h"
 #include "core/file_sys/file_backend.h"
-#include "core/hle/hle.h"
 #include "core/hle/kernel/client_session.h"
 #include "core/hle/result.h"
 #include "core/hle/service/fs/archive.h"
@@ -46,9 +45,7 @@ struct hash<Service::FS::ArchiveIdCode> {
 };
 }
 
-/// TODO(Subv): Confirm length of these strings
-const std::string SYSTEM_ID = "00000000000000000000000000000000";
-const std::string SDCARD_ID = "00000000000000000000000000000000";
+static constexpr Kernel::Handle INVALID_HANDLE{};
 
 namespace Service {
 namespace FS {
diff --git a/src/core/hle/service/fs/archive.h b/src/core/hle/service/fs/archive.h
index 7ba62ede0..519c1f3a9 100644
--- a/src/core/hle/service/fs/archive.h
+++ b/src/core/hle/service/fs/archive.h
@@ -17,9 +17,9 @@ class FileBackend;
 }
 
 /// The unique system identifier hash, also known as ID0
-extern const std::string SYSTEM_ID;
+static constexpr char SYSTEM_ID[]{"00000000000000000000000000000000"};
 /// The scrambled SD card CID, also known as ID1
-extern const std::string SDCARD_ID;
+static constexpr char SDCARD_ID[]{"00000000000000000000000000000000"};
 
 namespace Service {
 namespace FS {
diff --git a/src/core/hle/service/ir/ir.cpp b/src/core/hle/service/ir/ir.cpp
index 4d6639ded..7f1731a50 100644
--- a/src/core/hle/service/ir/ir.cpp
+++ b/src/core/hle/service/ir/ir.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "core/hle/kernel/event.h"
+#include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/shared_memory.h"
 #include "core/hle/service/ir/ir.h"
 #include "core/hle/service/ir/ir_rst.h"
@@ -36,7 +37,7 @@ void InitializeIrNopShared(Interface* self) {
     u32 send_buff_size = cmd_buff[4];
     u32 unk2 = cmd_buff[5];
     u8 baud_rate = cmd_buff[6] & 0xFF;
-    Handle handle = cmd_buff[8];
+    Kernel::Handle handle = cmd_buff[8];
 
     if (Kernel::g_handle_table.IsValid(handle)) {
         transfer_shared_memory = Kernel::g_handle_table.Get<Kernel::SharedMemory>(handle);
diff --git a/src/core/hle/service/ldr_ro/ldr_ro.cpp b/src/core/hle/service/ldr_ro/ldr_ro.cpp
index 9e5d6a318..8d00a7577 100644
--- a/src/core/hle/service/ldr_ro/ldr_ro.cpp
+++ b/src/core/hle/service/ldr_ro/ldr_ro.cpp
@@ -457,7 +457,7 @@ static void LoadCRO(Interface* self, bool link_on_load_bug_fix) {
         }
     }
 
-    Core::g_app_core->ClearInstructionCache();
+    Core::CPU().ClearInstructionCache();
 
     LOG_INFO(Service_LDR, "CRO \"%s\" loaded at 0x%08X, fixed_end=0x%08X", cro.ModuleName().data(),
              cro_address, cro_address + fix_size);
@@ -562,7 +562,7 @@ static void UnloadCRO(Interface* self) {
         memory_synchronizer.RemoveMemoryBlock(cro_address, cro_buffer_ptr);
     }
 
-    Core::g_app_core->ClearInstructionCache();
+    Core::CPU().ClearInstructionCache();
 
     cmd_buff[1] = result.raw;
 }
@@ -624,7 +624,7 @@ static void LinkCRO(Interface* self) {
     }
 
     memory_synchronizer.SynchronizeOriginalMemory();
-    Core::g_app_core->ClearInstructionCache();
+    Core::CPU().ClearInstructionCache();
 
     cmd_buff[1] = result.raw;
 }
@@ -686,7 +686,7 @@ static void UnlinkCRO(Interface* self) {
     }
 
     memory_synchronizer.SynchronizeOriginalMemory();
-    Core::g_app_core->ClearInstructionCache();
+    Core::CPU().ClearInstructionCache();
 
     cmd_buff[1] = result.raw;
 }
diff --git a/src/core/hle/service/mic_u.cpp b/src/core/hle/service/mic_u.cpp
index 7ced36439..4f1dd2fce 100644
--- a/src/core/hle/service/mic_u.cpp
+++ b/src/core/hle/service/mic_u.cpp
@@ -4,6 +4,7 @@
 
 #include "common/logging/log.h"
 #include "core/hle/kernel/event.h"
+#include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/shared_memory.h"
 #include "core/hle/service/mic_u.h"
 
@@ -50,7 +51,7 @@ static bool audio_buffer_loop;
 static void MapSharedMem(Interface* self) {
     u32* cmd_buff = Kernel::GetCommandBuffer();
     u32 size = cmd_buff[1];
-    Handle mem_handle = cmd_buff[3];
+    Kernel::Handle mem_handle = cmd_buff[3];
     shared_memory = Kernel::g_handle_table.Get<Kernel::SharedMemory>(mem_handle);
     if (shared_memory) {
         shared_memory->name = "MIC_U:shared_memory";
diff --git a/src/core/hle/svc.cpp b/src/core/hle/svc.cpp
index 5839d7230..2ca270de3 100644
--- a/src/core/hle/svc.cpp
+++ b/src/core/hle/svc.cpp
@@ -166,7 +166,8 @@ static ResultCode ControlMemory(u32* out_addr, u32 operation, u32 addr0, u32 add
 }
 
 /// Maps a memory block to specified address
-static ResultCode MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 other_permissions) {
+static ResultCode MapMemoryBlock(Kernel::Handle handle, u32 addr, u32 permissions,
+                                 u32 other_permissions) {
     using Kernel::SharedMemory;
     using Kernel::MemoryPermission;
 
@@ -198,7 +199,7 @@ static ResultCode MapMemoryBlock(Handle handle, u32 addr, u32 permissions, u32 o
                       ErrorSummary::InvalidArgument, ErrorLevel::Usage);
 }
 
-static ResultCode UnmapMemoryBlock(Handle handle, u32 addr) {
+static ResultCode UnmapMemoryBlock(Kernel::Handle handle, u32 addr) {
     using Kernel::SharedMemory;
 
     LOG_TRACE(Kernel_SVC, "called memblock=0x%08X, addr=0x%08X", handle, addr);
@@ -213,7 +214,7 @@ static ResultCode UnmapMemoryBlock(Handle handle, u32 addr) {
 }
 
 /// Connect to an OS service given the port name, returns the handle to the port to out
-static ResultCode ConnectToPort(Handle* out_handle, const char* port_name) {
+static ResultCode ConnectToPort(Kernel::Handle* out_handle, const char* port_name) {
     if (port_name == nullptr)
         return ERR_NOT_FOUND;
     if (std::strlen(port_name) > 11)
@@ -238,7 +239,7 @@ static ResultCode ConnectToPort(Handle* out_handle, const char* port_name) {
 }
 
 /// Makes a blocking IPC call to an OS service.
-static ResultCode SendSyncRequest(Handle handle) {
+static ResultCode SendSyncRequest(Kernel::Handle handle) {
     SharedPtr<Kernel::ClientSession> session =
         Kernel::g_handle_table.Get<Kernel::ClientSession>(handle);
     if (session == nullptr) {
@@ -253,13 +254,13 @@ static ResultCode SendSyncRequest(Handle handle) {
 }
 
 /// Close a handle
-static ResultCode CloseHandle(Handle handle) {
+static ResultCode CloseHandle(Kernel::Handle handle) {
     LOG_TRACE(Kernel_SVC, "Closing handle 0x%08X", handle);
     return Kernel::g_handle_table.Close(handle);
 }
 
 /// Wait for a handle to synchronize, timeout after the specified nanoseconds
-static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
+static ResultCode WaitSynchronization1(Kernel::Handle handle, s64 nano_seconds) {
     auto object = Kernel::g_handle_table.GetWaitObject(handle);
     Kernel::Thread* thread = Kernel::GetCurrentThread();
 
@@ -295,8 +296,8 @@ static ResultCode WaitSynchronization1(Handle handle, s64 nano_seconds) {
 }
 
 /// Wait for the given handles to synchronize, timeout after the specified nanoseconds
-static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_count, bool wait_all,
-                                       s64 nano_seconds) {
+static ResultCode WaitSynchronizationN(s32* out, Kernel::Handle* handles, s32 handle_count,
+                                       bool wait_all, s64 nano_seconds) {
     Kernel::Thread* thread = Kernel::GetCurrentThread();
 
     // Check if 'handles' is invalid
@@ -423,7 +424,7 @@ static ResultCode WaitSynchronizationN(s32* out, Handle* handles, s32 handle_cou
 }
 
 /// Create an address arbiter (to allocate access to shared resources)
-static ResultCode CreateAddressArbiter(Handle* out_handle) {
+static ResultCode CreateAddressArbiter(Kernel::Handle* out_handle) {
     using Kernel::AddressArbiter;
 
     SharedPtr<AddressArbiter> arbiter = AddressArbiter::Create();
@@ -433,7 +434,7 @@ static ResultCode CreateAddressArbiter(Handle* out_handle) {
 }
 
 /// Arbitrate address
-static ResultCode ArbitrateAddress(Handle handle, u32 address, u32 type, u32 value,
+static ResultCode ArbitrateAddress(Kernel::Handle handle, u32 address, u32 type, u32 value,
                                    s64 nanoseconds) {
     using Kernel::AddressArbiter;
 
@@ -476,7 +477,7 @@ static void OutputDebugString(const char* string) {
 }
 
 /// Get resource limit
-static ResultCode GetResourceLimit(Handle* resource_limit, Handle process_handle) {
+static ResultCode GetResourceLimit(Kernel::Handle* resource_limit, Kernel::Handle process_handle) {
     LOG_TRACE(Kernel_SVC, "called process=0x%08X", process_handle);
 
     SharedPtr<Kernel::Process> process =
@@ -490,7 +491,7 @@ static ResultCode GetResourceLimit(Handle* resource_limit, Handle process_handle
 }
 
 /// Get resource limit current values
-static ResultCode GetResourceLimitCurrentValues(s64* values, Handle resource_limit_handle,
+static ResultCode GetResourceLimitCurrentValues(s64* values, Kernel::Handle resource_limit_handle,
                                                 u32* names, u32 name_count) {
     LOG_TRACE(Kernel_SVC, "called resource_limit=%08X, names=%p, name_count=%d",
               resource_limit_handle, names, name_count);
@@ -507,8 +508,8 @@ static ResultCode GetResourceLimitCurrentValues(s64* values, Handle resource_lim
 }
 
 /// Get resource limit max values
-static ResultCode GetResourceLimitLimitValues(s64* values, Handle resource_limit_handle, u32* names,
-                                              u32 name_count) {
+static ResultCode GetResourceLimitLimitValues(s64* values, Kernel::Handle resource_limit_handle,
+                                              u32* names, u32 name_count) {
     LOG_TRACE(Kernel_SVC, "called resource_limit=%08X, names=%p, name_count=%d",
               resource_limit_handle, names, name_count);
 
@@ -524,7 +525,7 @@ static ResultCode GetResourceLimitLimitValues(s64* values, Handle resource_limit
 }
 
 /// Creates a new thread
-static ResultCode CreateThread(Handle* out_handle, s32 priority, u32 entry_point, u32 arg,
+static ResultCode CreateThread(Kernel::Handle* out_handle, s32 priority, u32 entry_point, u32 arg,
                                u32 stack_top, s32 processor_id) {
     using Kernel::Thread;
 
@@ -582,13 +583,13 @@ static ResultCode CreateThread(Handle* out_handle, s32 priority, u32 entry_point
 
 /// Called when a thread exits
 static void ExitThread() {
-    LOG_TRACE(Kernel_SVC, "called, pc=0x%08X", Core::g_app_core->GetPC());
+    LOG_TRACE(Kernel_SVC, "called, pc=0x%08X", Core::CPU().GetPC());
 
     Kernel::ExitCurrentThread();
 }
 
 /// Gets the priority for the specified thread
-static ResultCode GetThreadPriority(s32* priority, Handle handle) {
+static ResultCode GetThreadPriority(s32* priority, Kernel::Handle handle) {
     const SharedPtr<Kernel::Thread> thread = Kernel::g_handle_table.Get<Kernel::Thread>(handle);
     if (thread == nullptr)
         return ERR_INVALID_HANDLE;
@@ -598,7 +599,7 @@ static ResultCode GetThreadPriority(s32* priority, Handle handle) {
 }
 
 /// Sets the priority for the specified thread
-static ResultCode SetThreadPriority(Handle handle, s32 priority) {
+static ResultCode SetThreadPriority(Kernel::Handle handle, s32 priority) {
     SharedPtr<Kernel::Thread> thread = Kernel::g_handle_table.Get<Kernel::Thread>(handle);
     if (thread == nullptr)
         return ERR_INVALID_HANDLE;
@@ -608,11 +609,11 @@ static ResultCode SetThreadPriority(Handle handle, s32 priority) {
 }
 
 /// Create a mutex
-static ResultCode CreateMutex(Handle* out_handle, u32 initial_locked) {
+static ResultCode CreateMutex(Kernel::Handle* out_handle, u32 initial_locked) {
     using Kernel::Mutex;
 
     SharedPtr<Mutex> mutex = Mutex::Create(initial_locked != 0);
-    mutex->name = Common::StringFromFormat("mutex-%08x", Core::g_app_core->GetReg(14));
+    mutex->name = Common::StringFromFormat("mutex-%08x", Core::CPU().GetReg(14));
     CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(std::move(mutex)));
 
     LOG_TRACE(Kernel_SVC, "called initial_locked=%s : created handle=0x%08X",
@@ -622,7 +623,7 @@ static ResultCode CreateMutex(Handle* out_handle, u32 initial_locked) {
 }
 
 /// Release a mutex
-static ResultCode ReleaseMutex(Handle handle) {
+static ResultCode ReleaseMutex(Kernel::Handle handle) {
     using Kernel::Mutex;
 
     LOG_TRACE(Kernel_SVC, "called handle=0x%08X", handle);
@@ -637,7 +638,7 @@ static ResultCode ReleaseMutex(Handle handle) {
 }
 
 /// Get the ID of the specified process
-static ResultCode GetProcessId(u32* process_id, Handle process_handle) {
+static ResultCode GetProcessId(u32* process_id, Kernel::Handle process_handle) {
     LOG_TRACE(Kernel_SVC, "called process=0x%08X", process_handle);
 
     const SharedPtr<Kernel::Process> process =
@@ -650,7 +651,7 @@ static ResultCode GetProcessId(u32* process_id, Handle process_handle) {
 }
 
 /// Get the ID of the process that owns the specified thread
-static ResultCode GetProcessIdOfThread(u32* process_id, Handle thread_handle) {
+static ResultCode GetProcessIdOfThread(u32* process_id, Kernel::Handle thread_handle) {
     LOG_TRACE(Kernel_SVC, "called thread=0x%08X", thread_handle);
 
     const SharedPtr<Kernel::Thread> thread =
@@ -667,7 +668,7 @@ static ResultCode GetProcessIdOfThread(u32* process_id, Handle thread_handle) {
 }
 
 /// Get the ID for the specified thread.
-static ResultCode GetThreadId(u32* thread_id, Handle handle) {
+static ResultCode GetThreadId(u32* thread_id, Kernel::Handle handle) {
     LOG_TRACE(Kernel_SVC, "called thread=0x%08X", handle);
 
     const SharedPtr<Kernel::Thread> thread = Kernel::g_handle_table.Get<Kernel::Thread>(handle);
@@ -679,11 +680,11 @@ static ResultCode GetThreadId(u32* thread_id, Handle handle) {
 }
 
 /// Creates a semaphore
-static ResultCode CreateSemaphore(Handle* out_handle, s32 initial_count, s32 max_count) {
+static ResultCode CreateSemaphore(Kernel::Handle* out_handle, s32 initial_count, s32 max_count) {
     using Kernel::Semaphore;
 
     CASCADE_RESULT(SharedPtr<Semaphore> semaphore, Semaphore::Create(initial_count, max_count));
-    semaphore->name = Common::StringFromFormat("semaphore-%08x", Core::g_app_core->GetReg(14));
+    semaphore->name = Common::StringFromFormat("semaphore-%08x", Core::CPU().GetReg(14));
     CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(std::move(semaphore)));
 
     LOG_TRACE(Kernel_SVC, "called initial_count=%d, max_count=%d, created handle=0x%08X",
@@ -692,7 +693,7 @@ static ResultCode CreateSemaphore(Handle* out_handle, s32 initial_count, s32 max
 }
 
 /// Releases a certain number of slots in a semaphore
-static ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count) {
+static ResultCode ReleaseSemaphore(s32* count, Kernel::Handle handle, s32 release_count) {
     using Kernel::Semaphore;
 
     LOG_TRACE(Kernel_SVC, "called release_count=%d, handle=0x%08X", release_count, handle);
@@ -708,7 +709,7 @@ static ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count)
 
 /// Query process memory
 static ResultCode QueryProcessMemory(MemoryInfo* memory_info, PageInfo* page_info,
-                                     Handle process_handle, u32 addr) {
+                                     Kernel::Handle process_handle, u32 addr) {
     using Kernel::Process;
     Kernel::SharedPtr<Process> process = Kernel::g_handle_table.Get<Process>(process_handle);
     if (process == nullptr)
@@ -736,11 +737,11 @@ static ResultCode QueryMemory(MemoryInfo* memory_info, PageInfo* page_info, u32
 }
 
 /// Create an event
-static ResultCode CreateEvent(Handle* out_handle, u32 reset_type) {
+static ResultCode CreateEvent(Kernel::Handle* out_handle, u32 reset_type) {
     using Kernel::Event;
 
     SharedPtr<Event> evt = Event::Create(static_cast<Kernel::ResetType>(reset_type));
-    evt->name = Common::StringFromFormat("event-%08x", Core::g_app_core->GetReg(14));
+    evt->name = Common::StringFromFormat("event-%08x", Core::CPU().GetReg(14));
     CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(std::move(evt)));
 
     LOG_TRACE(Kernel_SVC, "called reset_type=0x%08X : created handle=0x%08X", reset_type,
@@ -749,14 +750,14 @@ static ResultCode CreateEvent(Handle* out_handle, u32 reset_type) {
 }
 
 /// Duplicates a kernel handle
-static ResultCode DuplicateHandle(Handle* out, Handle handle) {
+static ResultCode DuplicateHandle(Kernel::Handle* out, Kernel::Handle handle) {
     CASCADE_RESULT(*out, Kernel::g_handle_table.Duplicate(handle));
     LOG_TRACE(Kernel_SVC, "duplicated 0x%08X to 0x%08X", handle, *out);
     return RESULT_SUCCESS;
 }
 
 /// Signals an event
-static ResultCode SignalEvent(Handle handle) {
+static ResultCode SignalEvent(Kernel::Handle handle) {
     using Kernel::Event;
     LOG_TRACE(Kernel_SVC, "called event=0x%08X", handle);
 
@@ -770,7 +771,7 @@ static ResultCode SignalEvent(Handle handle) {
 }
 
 /// Clears an event
-static ResultCode ClearEvent(Handle handle) {
+static ResultCode ClearEvent(Kernel::Handle handle) {
     using Kernel::Event;
     LOG_TRACE(Kernel_SVC, "called event=0x%08X", handle);
 
@@ -783,11 +784,11 @@ static ResultCode ClearEvent(Handle handle) {
 }
 
 /// Creates a timer
-static ResultCode CreateTimer(Handle* out_handle, u32 reset_type) {
+static ResultCode CreateTimer(Kernel::Handle* out_handle, u32 reset_type) {
     using Kernel::Timer;
 
     SharedPtr<Timer> timer = Timer::Create(static_cast<Kernel::ResetType>(reset_type));
-    timer->name = Common::StringFromFormat("timer-%08x", Core::g_app_core->GetReg(14));
+    timer->name = Common::StringFromFormat("timer-%08x", Core::CPU().GetReg(14));
     CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(std::move(timer)));
 
     LOG_TRACE(Kernel_SVC, "called reset_type=0x%08X : created handle=0x%08X", reset_type,
@@ -796,7 +797,7 @@ static ResultCode CreateTimer(Handle* out_handle, u32 reset_type) {
 }
 
 /// Clears a timer
-static ResultCode ClearTimer(Handle handle) {
+static ResultCode ClearTimer(Kernel::Handle handle) {
     using Kernel::Timer;
 
     LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle);
@@ -810,7 +811,7 @@ static ResultCode ClearTimer(Handle handle) {
 }
 
 /// Starts a timer
-static ResultCode SetTimer(Handle handle, s64 initial, s64 interval) {
+static ResultCode SetTimer(Kernel::Handle handle, s64 initial, s64 interval) {
     using Kernel::Timer;
 
     LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle);
@@ -825,7 +826,7 @@ static ResultCode SetTimer(Handle handle, s64 initial, s64 interval) {
 }
 
 /// Cancels a timer
-static ResultCode CancelTimer(Handle handle) {
+static ResultCode CancelTimer(Kernel::Handle handle) {
     using Kernel::Timer;
 
     LOG_TRACE(Kernel_SVC, "called timer=0x%08X", handle);
@@ -854,14 +855,13 @@ static void SleepThread(s64 nanoseconds) {
 static s64 GetSystemTick() {
     s64 result = CoreTiming::GetTicks();
     // Advance time to defeat dumb games (like Cubic Ninja) that busy-wait for the frame to end.
-    Core::g_app_core->AddTicks(
-        150); // Measured time between two calls on a 9.2 o3DS with Ninjhax 1.1b
+    Core::CPU().AddTicks(150); // Measured time between two calls on a 9.2 o3DS with Ninjhax 1.1b
     return result;
 }
 
 /// Creates a memory block at the specified address with the specified permissions and size
-static ResultCode CreateMemoryBlock(Handle* out_handle, u32 addr, u32 size, u32 my_permission,
-                                    u32 other_permission) {
+static ResultCode CreateMemoryBlock(Kernel::Handle* out_handle, u32 addr, u32 size,
+                                    u32 my_permission, u32 other_permission) {
     using Kernel::SharedMemory;
 
     if (size % Memory::PAGE_SIZE != 0)
@@ -912,8 +912,8 @@ static ResultCode CreateMemoryBlock(Handle* out_handle, u32 addr, u32 size, u32
     return RESULT_SUCCESS;
 }
 
-static ResultCode CreatePort(Handle* server_port, Handle* client_port, const char* name,
-                             u32 max_sessions) {
+static ResultCode CreatePort(Kernel::Handle* server_port, Kernel::Handle* client_port,
+                             const char* name, u32 max_sessions) {
     // TODO(Subv): Implement named ports.
     ASSERT_MSG(name == nullptr, "Named ports are currently unimplemented");
 
@@ -978,7 +978,7 @@ static ResultCode GetSystemInfo(s64* out, u32 type, s32 param) {
     return RESULT_SUCCESS;
 }
 
-static ResultCode GetProcessInfo(s64* out, Handle process_handle, u32 type) {
+static ResultCode GetProcessInfo(s64* out, Kernel::Handle process_handle, u32 type) {
     LOG_TRACE(Kernel_SVC, "called process=0x%08X type=%u", process_handle, type);
 
     using Kernel::Process;
@@ -1185,7 +1185,7 @@ void CallSVC(u32 immediate) {
         if (info->func) {
             info->func();
             //  TODO(Subv): Not all service functions should cause a reschedule in all cases.
-            HLE::Reschedule(__func__);
+            Core::System::GetInstance().PrepareReschedule();
         } else {
             LOG_ERROR(Kernel_SVC, "unimplemented SVC function %s(..)", info->name);
         }
diff --git a/src/core/loader/3dsx.h b/src/core/loader/3dsx.h
index cfcc21cc4..3f376778a 100644
--- a/src/core/loader/3dsx.h
+++ b/src/core/loader/3dsx.h
@@ -27,34 +27,14 @@ public:
      */
     static FileType IdentifyType(FileUtil::IOFile& file);
 
-    /**
-     * Returns the type of this file
-     * @return FileType corresponding to the loaded file
-     */
     FileType GetFileType() override {
         return IdentifyType(file);
     }
 
-    /**
-     * Load the bootable file
-     * @return ResultStatus result of function
-     */
     ResultStatus Load() override;
 
-    /**
-     * Get the icon (typically icon section) of the application
-     * @param buffer Reference to buffer to store data
-     * @return ResultStatus result of function
-     */
     ResultStatus ReadIcon(std::vector<u8>& buffer) override;
 
-    /**
-     * Get the RomFS of the application
-     * @param romfs_file Reference to buffer to store data
-     * @param offset     Offset in the file to the RomFS
-     * @param size       Size of the RomFS in bytes
-     * @return ResultStatus result of function
-     */
     ResultStatus ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset,
                            u64& size) override;
 
diff --git a/src/core/loader/elf.h b/src/core/loader/elf.h
index 584bf6e27..862aa90d8 100644
--- a/src/core/loader/elf.h
+++ b/src/core/loader/elf.h
@@ -26,18 +26,10 @@ public:
      */
     static FileType IdentifyType(FileUtil::IOFile& file);
 
-    /**
-     * Returns the type of this file
-     * @return FileType corresponding to the loaded file
-     */
     FileType GetFileType() override {
         return IdentifyType(file);
     }
 
-    /**
-     * Load the bootable file
-     * @return ResultStatus result of function
-     */
     ResultStatus Load() override;
 
 private:
diff --git a/src/core/loader/ncch.h b/src/core/loader/ncch.h
index 6c93d46d8..6afc171a5 100644
--- a/src/core/loader/ncch.h
+++ b/src/core/loader/ncch.h
@@ -171,18 +171,10 @@ public:
      */
     static FileType IdentifyType(FileUtil::IOFile& file);
 
-    /**
-     * Returns the type of this file
-     * @return FileType corresponding to the loaded file
-     */
     FileType GetFileType() override {
         return IdentifyType(file);
     }
 
-    /**
-     * Load the application
-     * @return ResultStatus result of function
-     */
     ResultStatus Load() override;
 
     /**
@@ -191,32 +183,12 @@ public:
      */
     boost::optional<u32> LoadKernelSystemMode();
 
-    /**
-     * Get the code (typically .code section) of the application
-     * @param buffer Reference to buffer to store data
-     * @return ResultStatus result of function
-     */
     ResultStatus ReadCode(std::vector<u8>& buffer) override;
 
-    /**
-     * Get the icon (typically icon section) of the application
-     * @param buffer Reference to buffer to store data
-     * @return ResultStatus result of function
-     */
     ResultStatus ReadIcon(std::vector<u8>& buffer) override;
 
-    /**
-     * Get the banner (typically banner section) of the application
-     * @param buffer Reference to buffer to store data
-     * @return ResultStatus result of function
-     */
     ResultStatus ReadBanner(std::vector<u8>& buffer) override;
 
-    /**
-     * Get the logo (typically logo section) of the application
-     * @param buffer Reference to buffer to store data
-     * @return ResultStatus result of function
-     */
     ResultStatus ReadLogo(std::vector<u8>& buffer) override;
 
     /**
diff --git a/src/core/system.cpp b/src/core/system.cpp
deleted file mode 100644
index a5f763805..000000000
--- a/src/core/system.cpp
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include "audio_core/audio_core.h"
-#include "core/core.h"
-#include "core/core_timing.h"
-#include "core/gdbstub/gdbstub.h"
-#include "core/hle/hle.h"
-#include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/memory.h"
-#include "core/hw/hw.h"
-#include "core/system.h"
-#include "video_core/video_core.h"
-
-namespace System {
-
-static bool is_powered_on{false};
-
-Result Init(EmuWindow* emu_window, u32 system_mode) {
-    Core::Init();
-    CoreTiming::Init();
-    Memory::Init();
-    HW::Init();
-    Kernel::Init(system_mode);
-    HLE::Init();
-    if (!VideoCore::Init(emu_window)) {
-        return Result::ErrorInitVideoCore;
-    }
-    AudioCore::Init();
-    GDBStub::Init();
-
-    is_powered_on = true;
-
-    return Result::Success;
-}
-
-bool IsPoweredOn() {
-    return is_powered_on;
-}
-
-void Shutdown() {
-    GDBStub::Shutdown();
-    AudioCore::Shutdown();
-    VideoCore::Shutdown();
-    HLE::Shutdown();
-    Kernel::Shutdown();
-    HW::Shutdown();
-    CoreTiming::Shutdown();
-    Core::Shutdown();
-
-    is_powered_on = false;
-}
-
-} // namespace
diff --git a/src/core/system.h b/src/core/system.h
deleted file mode 100644
index b41fc088a..000000000
--- a/src/core/system.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-class EmuWindow;
-
-namespace System {
-
-enum class Result {
-    Success,            ///< Everything is fine
-    Error,              ///< Something went wrong (no module specified)
-    ErrorInitCore,      ///< Something went wrong during core init
-    ErrorInitVideoCore, ///< Something went wrong during video core init
-};
-
-Result Init(EmuWindow* emu_window, u32 system_mode);
-bool IsPoweredOn();
-void Shutdown();
-}