early-access version 1255

src/core/hle/service/acc/acc.cpp

@@ -0,0 +1,860 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <array>
+#include "common/common_paths.h"
+#include "common/common_types.h"
+#include "common/file_util.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "common/swap.h"
+#include "core/constants.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/file_sys/control_metadata.h"
+#include "core/file_sys/patch_manager.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/service/acc/acc.h"
+#include "core/hle/service/acc/acc_aa.h"
+#include "core/hle/service/acc/acc_su.h"
+#include "core/hle/service/acc/acc_u0.h"
+#include "core/hle/service/acc/acc_u1.h"
+#include "core/hle/service/acc/errors.h"
+#include "core/hle/service/acc/profile_manager.h"
+#include "core/hle/service/glue/arp.h"
+#include "core/hle/service/glue/manager.h"
+#include "core/hle/service/sm/sm.h"
+#include "core/loader/loader.h"
+
+namespace Service::Account {
+
+constexpr ResultCode ERR_INVALID_BUFFER_SIZE{ErrorModule::Account, 30};
+constexpr ResultCode ERR_FAILED_SAVE_DATA{ErrorModule::Account, 100};
+
+static std::string GetImagePath(Common::UUID uuid) {
+    return Common::FS::GetUserPath(Common::FS::UserPath::NANDDir) +
+           "/system/save/8000000000000010/su/avators/" + uuid.FormatSwitch() + ".jpg";
+}
+
+static constexpr u32 SanitizeJPEGSize(std::size_t size) {
+    constexpr std::size_t max_jpeg_image_size = 0x20000;
+    return static_cast<u32>(std::min(size, max_jpeg_image_size));
+}
+
+class IManagerForSystemService final : public ServiceFramework<IManagerForSystemService> {
+public:
+    explicit IManagerForSystemService(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IManagerForSystemService"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "CheckAvailability"},
+            {1, nullptr, "GetAccountId"},
+            {2, nullptr, "EnsureIdTokenCacheAsync"},
+            {3, nullptr, "LoadIdTokenCache"},
+            {100, nullptr, "SetSystemProgramIdentification"},
+            {101, nullptr, "RefreshNotificationTokenAsync"}, // 7.0.0+
+            {110, nullptr, "GetServiceEntryRequirementCache"}, // 4.0.0+
+            {111, nullptr, "InvalidateServiceEntryRequirementCache"}, // 4.0.0+
+            {112, nullptr, "InvalidateTokenCache"}, // 4.0.0 - 6.2.0
+            {113, nullptr, "GetServiceEntryRequirementCacheForOnlinePlay"}, // 6.1.0+
+            {120, nullptr, "GetNintendoAccountId"},
+            {121, nullptr, "CalculateNintendoAccountAuthenticationFingerprint"}, // 9.0.0+
+            {130, nullptr, "GetNintendoAccountUserResourceCache"},
+            {131, nullptr, "RefreshNintendoAccountUserResourceCacheAsync"},
+            {132, nullptr, "RefreshNintendoAccountUserResourceCacheAsyncIfSecondsElapsed"},
+            {133, nullptr, "GetNintendoAccountVerificationUrlCache"}, // 9.0.0+
+            {134, nullptr, "RefreshNintendoAccountVerificationUrlCache"}, // 9.0.0+
+            {135, nullptr, "RefreshNintendoAccountVerificationUrlCacheAsyncIfSecondsElapsed"}, // 9.0.0+
+            {140, nullptr, "GetNetworkServiceLicenseCache"}, // 5.0.0+
+            {141, nullptr, "RefreshNetworkServiceLicenseCacheAsync"}, // 5.0.0+
+            {142, nullptr, "RefreshNetworkServiceLicenseCacheAsyncIfSecondsElapsed"}, // 5.0.0+
+            {150, nullptr, "CreateAuthorizationRequest"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+// 3.0.0+
+class IFloatingRegistrationRequest final : public ServiceFramework<IFloatingRegistrationRequest> {
+public:
+    explicit IFloatingRegistrationRequest(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IFloatingRegistrationRequest"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetSessionId"},
+            {12, nullptr, "GetAccountId"},
+            {13, nullptr, "GetLinkedNintendoAccountId"},
+            {14, nullptr, "GetNickname"},
+            {15, nullptr, "GetProfileImage"},
+            {21, nullptr, "LoadIdTokenCache"},
+            {100, nullptr, "RegisterUser"}, // [1.0.0-3.0.2] RegisterAsync
+            {101, nullptr, "RegisterUserWithUid"}, // [1.0.0-3.0.2] RegisterWithUidAsync
+            {102, nullptr, "RegisterNetworkServiceAccountAsync"}, // 4.0.0+
+            {103, nullptr, "RegisterNetworkServiceAccountWithUidAsync"}, // 4.0.0+
+            {110, nullptr, "SetSystemProgramIdentification"},
+            {111, nullptr, "EnsureIdTokenCacheAsync"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IAdministrator final : public ServiceFramework<IAdministrator> {
+public:
+    explicit IAdministrator(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IAdministrator"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "CheckAvailability"},
+            {1, nullptr, "GetAccountId"},
+            {2, nullptr, "EnsureIdTokenCacheAsync"},
+            {3, nullptr, "LoadIdTokenCache"},
+            {100, nullptr, "SetSystemProgramIdentification"},
+            {101, nullptr, "RefreshNotificationTokenAsync"}, // 7.0.0+
+            {110, nullptr, "GetServiceEntryRequirementCache"}, // 4.0.0+
+            {111, nullptr, "InvalidateServiceEntryRequirementCache"}, // 4.0.0+
+            {112, nullptr, "InvalidateTokenCache"}, // 4.0.0 - 6.2.0
+            {113, nullptr, "GetServiceEntryRequirementCacheForOnlinePlay"}, // 6.1.0+
+            {120, nullptr, "GetNintendoAccountId"},
+            {121, nullptr, "CalculateNintendoAccountAuthenticationFingerprint"}, // 9.0.0+
+            {130, nullptr, "GetNintendoAccountUserResourceCache"},
+            {131, nullptr, "RefreshNintendoAccountUserResourceCacheAsync"},
+            {132, nullptr, "RefreshNintendoAccountUserResourceCacheAsyncIfSecondsElapsed"},
+            {133, nullptr, "GetNintendoAccountVerificationUrlCache"}, // 9.0.0+
+            {134, nullptr, "RefreshNintendoAccountVerificationUrlCacheAsync"}, // 9.0.0+
+            {135, nullptr, "RefreshNintendoAccountVerificationUrlCacheAsyncIfSecondsElapsed"}, // 9.0.0+
+            {140, nullptr, "GetNetworkServiceLicenseCache"}, // 5.0.0+
+            {141, nullptr, "RefreshNetworkServiceLicenseCacheAsync"}, // 5.0.0+
+            {142, nullptr, "RefreshNetworkServiceLicenseCacheAsyncIfSecondsElapsed"}, // 5.0.0+
+            {150, nullptr, "CreateAuthorizationRequest"},
+            {200, nullptr, "IsRegistered"},
+            {201, nullptr, "RegisterAsync"},
+            {202, nullptr, "UnregisterAsync"},
+            {203, nullptr, "DeleteRegistrationInfoLocally"},
+            {220, nullptr, "SynchronizeProfileAsync"},
+            {221, nullptr, "UploadProfileAsync"},
+            {222, nullptr, "SynchronizaProfileAsyncIfSecondsElapsed"},
+            {250, nullptr, "IsLinkedWithNintendoAccount"},
+            {251, nullptr, "CreateProcedureToLinkWithNintendoAccount"},
+            {252, nullptr, "ResumeProcedureToLinkWithNintendoAccount"},
+            {255, nullptr, "CreateProcedureToUpdateLinkageStateOfNintendoAccount"},
+            {256, nullptr, "ResumeProcedureToUpdateLinkageStateOfNintendoAccount"},
+            {260, nullptr, "CreateProcedureToLinkNnidWithNintendoAccount"}, // 3.0.0+
+            {261, nullptr, "ResumeProcedureToLinkNnidWithNintendoAccount"}, // 3.0.0+
+            {280, nullptr, "ProxyProcedureToAcquireApplicationAuthorizationForNintendoAccount"},
+            {290, nullptr, "GetRequestForNintendoAccountUserResourceView"}, // 8.0.0+
+            {300, nullptr, "TryRecoverNintendoAccountUserStateAsync"}, // 6.0.0+
+            {400, nullptr, "IsServiceEntryRequirementCacheRefreshRequiredForOnlinePlay"}, // 6.1.0+
+            {401, nullptr, "RefreshServiceEntryRequirementCacheForOnlinePlayAsync"}, // 6.1.0+
+            {900, nullptr, "GetAuthenticationInfoForWin"}, // 9.0.0+
+            {901, nullptr, "ImportAsyncForWin"}, // 9.0.0+
+            {997, nullptr, "DebugUnlinkNintendoAccountAsync"},
+            {998, nullptr, "DebugSetAvailabilityErrorDetail"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IAuthorizationRequest final : public ServiceFramework<IAuthorizationRequest> {
+public:
+    explicit IAuthorizationRequest(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IAuthorizationRequest"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetSessionId"},
+            {10, nullptr, "InvokeWithoutInteractionAsync"},
+            {19, nullptr, "IsAuthorized"},
+            {20, nullptr, "GetAuthorizationCode"},
+            {21, nullptr, "GetIdToken"},
+            {22, nullptr, "GetState"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IOAuthProcedure final : public ServiceFramework<IOAuthProcedure> {
+public:
+    explicit IOAuthProcedure(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IOAuthProcedure"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "PrepareAsync"},
+            {1, nullptr, "GetRequest"},
+            {2, nullptr, "ApplyResponse"},
+            {3, nullptr, "ApplyResponseAsync"},
+            {10, nullptr, "Suspend"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+// 3.0.0+
+class IOAuthProcedureForExternalNsa final : public ServiceFramework<IOAuthProcedureForExternalNsa> {
+public:
+    explicit IOAuthProcedureForExternalNsa(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IOAuthProcedureForExternalNsa"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "PrepareAsync"},
+            {1, nullptr, "GetRequest"},
+            {2, nullptr, "ApplyResponse"},
+            {3, nullptr, "ApplyResponseAsync"},
+            {10, nullptr, "Suspend"},
+            {100, nullptr, "GetAccountId"},
+            {101, nullptr, "GetLinkedNintendoAccountId"},
+            {102, nullptr, "GetNickname"},
+            {103, nullptr, "GetProfileImage"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IOAuthProcedureForNintendoAccountLinkage final
+    : public ServiceFramework<IOAuthProcedureForNintendoAccountLinkage> {
+public:
+    explicit IOAuthProcedureForNintendoAccountLinkage(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IOAuthProcedureForNintendoAccountLinkage"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "PrepareAsync"},
+            {1, nullptr, "GetRequest"},
+            {2, nullptr, "ApplyResponse"},
+            {3, nullptr, "ApplyResponseAsync"},
+            {10, nullptr, "Suspend"},
+            {100, nullptr, "GetRequestWithTheme"},
+            {101, nullptr, "IsNetworkServiceAccountReplaced"},
+            {199, nullptr, "GetUrlForIntroductionOfExtraMembership"}, // 2.0.0 - 5.1.0
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class INotifier final : public ServiceFramework<INotifier> {
+public:
+    explicit INotifier(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "INotifier"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetSystemEvent"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IProfileCommon : public ServiceFramework<IProfileCommon> {
+public:
+    explicit IProfileCommon(Core::System& system_, const char* name, bool editor_commands,
+                            Common::UUID user_id_, ProfileManager& profile_manager_)
+        : ServiceFramework{system_, name}, profile_manager{profile_manager_}, user_id{user_id_} {
+        static const FunctionInfo functions[] = {
+            {0, &IProfileCommon::Get, "Get"},
+            {1, &IProfileCommon::GetBase, "GetBase"},
+            {10, &IProfileCommon::GetImageSize, "GetImageSize"},
+            {11, &IProfileCommon::LoadImage, "LoadImage"},
+        };
+
+        RegisterHandlers(functions);
+
+        if (editor_commands) {
+            static const FunctionInfo editor_functions[] = {
+                {100, &IProfileCommon::Store, "Store"},
+                {101, &IProfileCommon::StoreWithImage, "StoreWithImage"},
+            };
+
+            RegisterHandlers(editor_functions);
+        }
+    }
+
+protected:
+    void Get(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_ACC, "called user_id={}", user_id.Format());
+        ProfileBase profile_base{};
+        ProfileData data{};
+        if (profile_manager.GetProfileBaseAndData(user_id, profile_base, data)) {
+            ctx.WriteBuffer(data);
+            IPC::ResponseBuilder rb{ctx, 16};
+            rb.Push(RESULT_SUCCESS);
+            rb.PushRaw(profile_base);
+        } else {
+            LOG_ERROR(Service_ACC, "Failed to get profile base and data for user={}",
+                      user_id.Format());
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(RESULT_UNKNOWN); // TODO(ogniK): Get actual error code
+        }
+    }
+
+    void GetBase(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_ACC, "called user_id={}", user_id.Format());
+        ProfileBase profile_base{};
+        if (profile_manager.GetProfileBase(user_id, profile_base)) {
+            IPC::ResponseBuilder rb{ctx, 16};
+            rb.Push(RESULT_SUCCESS);
+            rb.PushRaw(profile_base);
+        } else {
+            LOG_ERROR(Service_ACC, "Failed to get profile base for user={}", user_id.Format());
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(RESULT_UNKNOWN); // TODO(ogniK): Get actual error code
+        }
+    }
+
+    void LoadImage(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_ACC, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+
+        const Common::FS::IOFile image(GetImagePath(user_id), "rb");
+        if (!image.IsOpen()) {
+            LOG_WARNING(Service_ACC,
+                        "Failed to load user provided image! Falling back to built-in backup...");
+            ctx.WriteBuffer(Core::Constants::ACCOUNT_BACKUP_JPEG);
+            rb.Push(SanitizeJPEGSize(Core::Constants::ACCOUNT_BACKUP_JPEG.size()));
+            return;
+        }
+
+        const u32 size = SanitizeJPEGSize(image.GetSize());
+        std::vector<u8> buffer(size);
+        image.ReadBytes(buffer.data(), buffer.size());
+
+        ctx.WriteBuffer(buffer);
+        rb.Push<u32>(size);
+    }
+
+    void GetImageSize(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_ACC, "called");
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+
+        const Common::FS::IOFile image(GetImagePath(user_id), "rb");
+
+        if (!image.IsOpen()) {
+            LOG_WARNING(Service_ACC,
+                        "Failed to load user provided image! Falling back to built-in backup...");
+            rb.Push(SanitizeJPEGSize(Core::Constants::ACCOUNT_BACKUP_JPEG.size()));
+        } else {
+            rb.Push(SanitizeJPEGSize(image.GetSize()));
+        }
+    }
+
+    void Store(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto base = rp.PopRaw<ProfileBase>();
+
+        const auto user_data = ctx.ReadBuffer();
+
+        LOG_DEBUG(Service_ACC, "called, username='{}', timestamp={:016X}, uuid={}",
+                  Common::StringFromFixedZeroTerminatedBuffer(
+                      reinterpret_cast<const char*>(base.username.data()), base.username.size()),
+                  base.timestamp, base.user_uuid.Format());
+
+        if (user_data.size() < sizeof(ProfileData)) {
+            LOG_ERROR(Service_ACC, "ProfileData buffer too small!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERR_INVALID_BUFFER_SIZE);
+            return;
+        }
+
+        ProfileData data;
+        std::memcpy(&data, user_data.data(), sizeof(ProfileData));
+
+        if (!profile_manager.SetProfileBaseAndData(user_id, base, data)) {
+            LOG_ERROR(Service_ACC, "Failed to update profile data and base!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERR_FAILED_SAVE_DATA);
+            return;
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void StoreWithImage(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto base = rp.PopRaw<ProfileBase>();
+
+        const auto user_data = ctx.ReadBuffer();
+        const auto image_data = ctx.ReadBuffer(1);
+
+        LOG_DEBUG(Service_ACC, "called, username='{}', timestamp={:016X}, uuid={}",
+                  Common::StringFromFixedZeroTerminatedBuffer(
+                      reinterpret_cast<const char*>(base.username.data()), base.username.size()),
+                  base.timestamp, base.user_uuid.Format());
+
+        if (user_data.size() < sizeof(ProfileData)) {
+            LOG_ERROR(Service_ACC, "ProfileData buffer too small!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERR_INVALID_BUFFER_SIZE);
+            return;
+        }
+
+        ProfileData data;
+        std::memcpy(&data, user_data.data(), sizeof(ProfileData));
+
+        Common::FS::IOFile image(GetImagePath(user_id), "wb");
+
+        if (!image.IsOpen() || !image.Resize(image_data.size()) ||
+            image.WriteBytes(image_data.data(), image_data.size()) != image_data.size() ||
+            !profile_manager.SetProfileBaseAndData(user_id, base, data)) {
+            LOG_ERROR(Service_ACC, "Failed to update profile data, base, and image!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERR_FAILED_SAVE_DATA);
+            return;
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    ProfileManager& profile_manager;
+    Common::UUID user_id{Common::INVALID_UUID}; ///< The user id this profile refers to.
+};
+
+class IProfile final : public IProfileCommon {
+public:
+    explicit IProfile(Core::System& system_, Common::UUID user_id_,
+                      ProfileManager& profile_manager_)
+        : IProfileCommon{system_, "IProfile", false, user_id_, profile_manager_} {}
+};
+
+class IProfileEditor final : public IProfileCommon {
+public:
+    explicit IProfileEditor(Core::System& system_, Common::UUID user_id_,
+                            ProfileManager& profile_manager_)
+        : IProfileCommon{system_, "IProfileEditor", true, user_id_, profile_manager_} {}
+};
+
+class IAsyncContext final : public ServiceFramework<IAsyncContext> {
+public:
+    explicit IAsyncContext(Core::System& system_) : ServiceFramework{system_, "IAsyncContext"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetSystemEvent"},
+            {1, nullptr, "Cancel"},
+            {2, nullptr, "HasDone"},
+            {3, nullptr, "GetResult"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class ISessionObject final : public ServiceFramework<ISessionObject> {
+public:
+    explicit ISessionObject(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "ISessionObject"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {999, nullptr, "Dummy"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IGuestLoginRequest final : public ServiceFramework<IGuestLoginRequest> {
+public:
+    explicit IGuestLoginRequest(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IGuestLoginRequest"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetSessionId"},
+            {11, nullptr, "Unknown"}, // 1.0.0 - 2.3.0 (the name is blank on Switchbrew)
+            {12, nullptr, "GetAccountId"},
+            {13, nullptr, "GetLinkedNintendoAccountId"},
+            {14, nullptr, "GetNickname"},
+            {15, nullptr, "GetProfileImage"},
+            {21, nullptr, "LoadIdTokenCache"}, // 3.0.0+
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IManagerForApplication final : public ServiceFramework<IManagerForApplication> {
+public:
+    explicit IManagerForApplication(Core::System& system_, Common::UUID user_id_)
+        : ServiceFramework{system_, "IManagerForApplication"}, user_id{user_id_} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IManagerForApplication::CheckAvailability, "CheckAvailability"},
+            {1, &IManagerForApplication::GetAccountId, "GetAccountId"},
+            {2, nullptr, "EnsureIdTokenCacheAsync"},
+            {3, nullptr, "LoadIdTokenCache"},
+            {130, nullptr, "GetNintendoAccountUserResourceCacheForApplication"},
+            {150, nullptr, "CreateAuthorizationRequest"},
+            {160, &IManagerForApplication::StoreOpenContext, "StoreOpenContext"},
+            {170, nullptr, "LoadNetworkServiceLicenseKindAsync"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void CheckAvailability(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_ACC, "(STUBBED) called");
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(false); // TODO: Check when this is supposed to return true and when not
+    }
+
+    void GetAccountId(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_ACC, "called");
+
+        IPC::ResponseBuilder rb{ctx, 4};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushRaw<u64>(user_id.GetNintendoID());
+    }
+
+    void StoreOpenContext(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_ACC, "(STUBBED) called");
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    Common::UUID user_id;
+};
+
+// 6.0.0+
+class IAsyncNetworkServiceLicenseKindContext final
+    : public ServiceFramework<IAsyncNetworkServiceLicenseKindContext> {
+public:
+    explicit IAsyncNetworkServiceLicenseKindContext(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IAsyncNetworkServiceLicenseKindContext"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetSystemEvent"},
+            {1, nullptr, "Cancel"},
+            {2, nullptr, "HasDone"},
+            {3, nullptr, "GetResult"},
+            {4, nullptr, "GetNetworkServiceLicenseKind"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+// 8.0.0+
+class IOAuthProcedureForUserRegistration final
+    : public ServiceFramework<IOAuthProcedureForUserRegistration> {
+public:
+    explicit IOAuthProcedureForUserRegistration(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IOAuthProcedureForUserRegistration"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "PrepareAsync"},
+            {1, nullptr, "GetRequest"},
+            {2, nullptr, "ApplyResponse"},
+            {3, nullptr, "ApplyResponseAsync"},
+            {10, nullptr, "Suspend"},
+            {100, nullptr, "GetAccountId"},
+            {101, nullptr, "GetLinkedNintendoAccountId"},
+            {102, nullptr, "GetNickname"},
+            {103, nullptr, "GetProfileImage"},
+            {110, nullptr, "RegisterUserAsync"},
+            {111, nullptr, "GetUid"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class DAUTH_O final : public ServiceFramework<DAUTH_O> {
+public:
+    explicit DAUTH_O(Core::System& system_, Common::UUID) : ServiceFramework{system_, "dauth:o"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "EnsureAuthenticationTokenCacheAsync"}, // [5.0.0-5.1.0] GeneratePostData
+            {1, nullptr, "LoadAuthenticationTokenCache"}, // 6.0.0+
+            {2, nullptr, "InvalidateAuthenticationTokenCache"}, // 6.0.0+
+            {10, nullptr, "EnsureEdgeTokenCacheAsync"}, // 6.0.0+
+            {11, nullptr, "LoadEdgeTokenCache"}, // 6.0.0+
+            {12, nullptr, "InvalidateEdgeTokenCache"}, // 6.0.0+
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+// 6.0.0+
+class IAsyncResult final : public ServiceFramework<IAsyncResult> {
+public:
+    explicit IAsyncResult(Core::System& system_, Common::UUID)
+        : ServiceFramework{system_, "IAsyncResult"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetResult"},
+            {1, nullptr, "Cancel"},
+            {2, nullptr, "IsAvailable"},
+            {3, nullptr, "GetSystemEvent"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+void Module::Interface::GetUserCount(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push<u32>(static_cast<u32>(profile_manager->GetUserCount()));
+}
+
+void Module::Interface::GetUserExistence(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    Common::UUID user_id = rp.PopRaw<Common::UUID>();
+    LOG_DEBUG(Service_ACC, "called user_id={}", user_id.Format());
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(profile_manager->UserExists(user_id));
+}
+
+void Module::Interface::ListAllUsers(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+    ctx.WriteBuffer(profile_manager->GetAllUsers());
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+void Module::Interface::ListOpenUsers(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+    ctx.WriteBuffer(profile_manager->GetOpenUsers());
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+void Module::Interface::GetLastOpenedUser(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+    IPC::ResponseBuilder rb{ctx, 6};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushRaw<Common::UUID>(profile_manager->GetLastOpenedUser());
+}
+
+void Module::Interface::GetProfile(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    Common::UUID user_id = rp.PopRaw<Common::UUID>();
+    LOG_DEBUG(Service_ACC, "called user_id={}", user_id.Format());
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IProfile>(system, user_id, *profile_manager);
+}
+
+void Module::Interface::IsUserRegistrationRequestPermitted(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_ACC, "(STUBBED) called");
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(profile_manager->CanSystemRegisterUser());
+}
+
+void Module::Interface::InitializeApplicationInfo(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+
+    LOG_DEBUG(Service_ACC, "called");
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(InitializeApplicationInfoBase());
+}
+
+void Module::Interface::InitializeApplicationInfoRestricted(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+
+    LOG_WARNING(Service_ACC, "(Partial implementation) called");
+
+    // TODO(ogniK): We require checking if the user actually owns the title and what not. As of
+    // currently, we assume the user owns the title. InitializeApplicationInfoBase SHOULD be called
+    // first then we do extra checks if the game is a digital copy.
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(InitializeApplicationInfoBase());
+}
+
+ResultCode Module::Interface::InitializeApplicationInfoBase() {
+    if (application_info) {
+        LOG_ERROR(Service_ACC, "Application already initialized");
+        return ERR_ACCOUNTINFO_ALREADY_INITIALIZED;
+    }
+
+    // TODO(ogniK): This should be changed to reflect the target process for when we have multiple
+    // processes emulated. As we don't actually have pid support we should assume we're just using
+    // our own process
+    const auto& current_process = system.Kernel().CurrentProcess();
+    const auto launch_property =
+        system.GetARPManager().GetLaunchProperty(current_process->GetTitleID());
+
+    if (launch_property.Failed()) {
+        LOG_ERROR(Service_ACC, "Failed to get launch property");
+        return ERR_ACCOUNTINFO_BAD_APPLICATION;
+    }
+
+    switch (launch_property->base_game_storage_id) {
+    case FileSys::StorageId::GameCard:
+        application_info.application_type = ApplicationType::GameCard;
+        break;
+    case FileSys::StorageId::Host:
+    case FileSys::StorageId::NandUser:
+    case FileSys::StorageId::SdCard:
+    case FileSys::StorageId::None: // Yuzu specific, differs from hardware
+        application_info.application_type = ApplicationType::Digital;
+        break;
+    default:
+        LOG_ERROR(Service_ACC, "Invalid game storage ID! storage_id={}",
+                  launch_property->base_game_storage_id);
+        return ERR_ACCOUNTINFO_BAD_APPLICATION;
+    }
+
+    LOG_WARNING(Service_ACC, "ApplicationInfo init required");
+    // TODO(ogniK): Actual initalization here
+
+    return RESULT_SUCCESS;
+}
+
+void Module::Interface::GetBaasAccountManagerForApplication(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IManagerForApplication>(system, profile_manager->GetLastOpenedUser());
+}
+
+void Module::Interface::IsUserAccountSwitchLocked(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+    FileSys::NACP nacp;
+    const auto res = system.GetAppLoader().ReadControlData(nacp);
+
+    bool is_locked = false;
+
+    if (res != Loader::ResultStatus::Success) {
+        const FileSys::PatchManager pm{system.CurrentProcess()->GetTitleID(),
+                                       system.GetFileSystemController(),
+                                       system.GetContentProvider()};
+        const auto nacp_unique = pm.GetControlMetadata().first;
+
+        if (nacp_unique != nullptr) {
+            is_locked = nacp_unique->GetUserAccountSwitchLock();
+        } else {
+            LOG_ERROR(Service_ACC, "nacp_unique is null!");
+        }
+    } else {
+        is_locked = nacp.GetUserAccountSwitchLock();
+    }
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(is_locked);
+}
+
+void Module::Interface::GetProfileEditor(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    Common::UUID user_id = rp.PopRaw<Common::UUID>();
+
+    LOG_DEBUG(Service_ACC, "called, user_id={}", user_id.Format());
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IProfileEditor>(system, user_id, *profile_manager);
+}
+
+void Module::Interface::ListQualifiedUsers(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+
+    // All users should be qualified. We don't actually have parental control or anything to do with
+    // nintendo online currently. We're just going to assume the user running the game has access to
+    // the game regardless of parental control settings.
+    ctx.WriteBuffer(profile_manager->GetAllUsers());
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+void Module::Interface::LoadOpenContext(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_ACC, "(STUBBED) called");
+
+    // This is similar to GetBaasAccountManagerForApplication
+    // This command is used concurrently with ListOpenContextStoredUsers
+    // TODO: Find the differences between this and GetBaasAccountManagerForApplication
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IManagerForApplication>(system, profile_manager->GetLastOpenedUser());
+}
+
+void Module::Interface::ListOpenContextStoredUsers(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_ACC, "(STUBBED) called");
+
+    // TODO(ogniK): Handle open contexts
+    ctx.WriteBuffer(profile_manager->GetOpenUsers());
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+void Module::Interface::TrySelectUserWithoutInteraction(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_ACC, "called");
+    // A u8 is passed into this function which we can safely ignore. It's to determine if we have
+    // access to use the network or not by the looks of it
+    IPC::ResponseBuilder rb{ctx, 6};
+    if (profile_manager->GetUserCount() != 1) {
+        rb.Push(RESULT_SUCCESS);
+        rb.PushRaw<u128>(Common::INVALID_UUID);
+        return;
+    }
+
+    const auto user_list = profile_manager->GetAllUsers();
+    if (std::all_of(user_list.begin(), user_list.end(),
+                    [](const auto& user) { return user.uuid == Common::INVALID_UUID; })) {
+        rb.Push(RESULT_UNKNOWN); // TODO(ogniK): Find the correct error code
+        rb.PushRaw<u128>(Common::INVALID_UUID);
+        return;
+    }
+
+    // Select the first user we have
+    rb.Push(RESULT_SUCCESS);
+    rb.PushRaw<u128>(profile_manager->GetUser(0)->uuid);
+}
+
+Module::Interface::Interface(std::shared_ptr<Module> module_,
+                             std::shared_ptr<ProfileManager> profile_manager_,
+                             Core::System& system_, const char* name)
+    : ServiceFramework{system_, name}, module{std::move(module_)}, profile_manager{std::move(
+                                                                       profile_manager_)} {}
+
+Module::Interface::~Interface() = default;
+
+void InstallInterfaces(Core::System& system) {
+    auto module = std::make_shared<Module>();
+    auto profile_manager = std::make_shared<ProfileManager>();
+
+    std::make_shared<ACC_AA>(module, profile_manager, system)
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<ACC_SU>(module, profile_manager, system)
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<ACC_U0>(module, profile_manager, system)
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<ACC_U1>(module, profile_manager, system)
+        ->InstallAsService(system.ServiceManager());
+}
+
+} // namespace Service::Account

src/core/hle/service/acc/acc.h

@@ -0,0 +1,69 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/glue/manager.h"
+#include "core/hle/service/service.h"
+
+namespace Service::Account {
+
+class ProfileManager;
+
+class Module final {
+public:
+    class Interface : public ServiceFramework<Interface> {
+    public:
+        explicit Interface(std::shared_ptr<Module> module_,
+                           std::shared_ptr<ProfileManager> profile_manager_, Core::System& system_,
+                           const char* name);
+        ~Interface() override;
+
+        void GetUserCount(Kernel::HLERequestContext& ctx);
+        void GetUserExistence(Kernel::HLERequestContext& ctx);
+        void ListAllUsers(Kernel::HLERequestContext& ctx);
+        void ListOpenUsers(Kernel::HLERequestContext& ctx);
+        void GetLastOpenedUser(Kernel::HLERequestContext& ctx);
+        void GetProfile(Kernel::HLERequestContext& ctx);
+        void InitializeApplicationInfo(Kernel::HLERequestContext& ctx);
+        void InitializeApplicationInfoRestricted(Kernel::HLERequestContext& ctx);
+        void GetBaasAccountManagerForApplication(Kernel::HLERequestContext& ctx);
+        void IsUserRegistrationRequestPermitted(Kernel::HLERequestContext& ctx);
+        void TrySelectUserWithoutInteraction(Kernel::HLERequestContext& ctx);
+        void IsUserAccountSwitchLocked(Kernel::HLERequestContext& ctx);
+        void GetProfileEditor(Kernel::HLERequestContext& ctx);
+        void ListQualifiedUsers(Kernel::HLERequestContext& ctx);
+        void LoadOpenContext(Kernel::HLERequestContext& ctx);
+        void ListOpenContextStoredUsers(Kernel::HLERequestContext& ctx);
+
+    private:
+        ResultCode InitializeApplicationInfoBase();
+
+        enum class ApplicationType : u32_le {
+            GameCard = 0,
+            Digital = 1,
+            Unknown = 3,
+        };
+
+        struct ApplicationInfo {
+            Service::Glue::ApplicationLaunchProperty launch_property;
+            ApplicationType application_type;
+
+            constexpr explicit operator bool() const {
+                return launch_property.title_id != 0x0;
+            }
+        };
+
+        ApplicationInfo application_info{};
+
+    protected:
+        std::shared_ptr<Module> module;
+        std::shared_ptr<ProfileManager> profile_manager;
+    };
+};
+
+/// Registers all ACC services with the specified service manager.
+void InstallInterfaces(Core::System& system);
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_aa.cpp

@@ -0,0 +1,24 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/acc/acc_aa.h"
+
+namespace Service::Account {
+
+ACC_AA::ACC_AA(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+               Core::System& system)
+    : Module::Interface(std::move(module), std::move(profile_manager), system, "acc:aa") {
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "EnsureCacheAsync"},
+        {1, nullptr, "LoadCache"},
+        {2, nullptr, "GetDeviceAccountId"},
+        {50, nullptr, "RegisterNotificationTokenAsync"},   // 1.0.0 - 6.2.0
+        {51, nullptr, "UnregisterNotificationTokenAsync"}, // 1.0.0 - 6.2.0
+    };
+    RegisterHandlers(functions);
+}
+
+ACC_AA::~ACC_AA() = default;
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_aa.h

@@ -0,0 +1,18 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/acc/acc.h"
+
+namespace Service::Account {
+
+class ACC_AA final : public Module::Interface {
+public:
+    explicit ACC_AA(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+                    Core::System& system);
+    ~ACC_AA() override;
+};
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_su.cpp

@@ -0,0 +1,68 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/acc/acc_su.h"
+
+namespace Service::Account {
+
+ACC_SU::ACC_SU(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+               Core::System& system)
+    : Module::Interface(std::move(module), std::move(profile_manager), system, "acc:su") {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, &ACC_SU::GetUserCount, "GetUserCount"},
+        {1, &ACC_SU::GetUserExistence, "GetUserExistence"},
+        {2, &ACC_SU::ListAllUsers, "ListAllUsers"},
+        {3, &ACC_SU::ListOpenUsers, "ListOpenUsers"},
+        {4, &ACC_SU::GetLastOpenedUser, "GetLastOpenedUser"},
+        {5, &ACC_SU::GetProfile, "GetProfile"},
+        {6, nullptr, "GetProfileDigest"}, // 3.0.0+
+        {50, &ACC_SU::IsUserRegistrationRequestPermitted, "IsUserRegistrationRequestPermitted"},
+        {51, &ACC_SU::TrySelectUserWithoutInteraction, "TrySelectUserWithoutInteraction"},
+        {60, &ACC_SU::ListOpenContextStoredUsers, "ListOpenContextStoredUsers"}, // 5.0.0 - 5.1.0
+        {99, nullptr, "DebugActivateOpenContextRetention"}, // 6.0.0+
+        {100, nullptr, "GetUserRegistrationNotifier"},
+        {101, nullptr, "GetUserStateChangeNotifier"},
+        {102, nullptr, "GetBaasAccountManagerForSystemService"},
+        {103, nullptr, "GetBaasUserAvailabilityChangeNotifier"},
+        {104, nullptr, "GetProfileUpdateNotifier"},
+        {105, nullptr, "CheckNetworkServiceAvailabilityAsync"}, // 4.0.0+
+        {106, nullptr, "GetProfileSyncNotifier"}, // 9.0.0+
+        {110, nullptr, "StoreSaveDataThumbnail"},
+        {111, nullptr, "ClearSaveDataThumbnail"},
+        {112, nullptr, "LoadSaveDataThumbnail"},
+        {113, nullptr, "GetSaveDataThumbnailExistence"}, // 5.0.0+
+        {120, nullptr, "ListOpenUsersInApplication"}, // 10.0.0+
+        {130, nullptr, "ActivateOpenContextRetention"}, // 6.0.0+
+        {140, &ACC_SU::ListQualifiedUsers, "ListQualifiedUsers"}, // 6.0.0+
+        {150, nullptr, "AuthenticateApplicationAsync"}, // 10.0.0+
+        {190, nullptr, "GetUserLastOpenedApplication"}, // 1.0.0 - 9.2.0
+        {191, nullptr, "ActivateOpenContextHolder"}, // 7.0.0+
+        {200, nullptr, "BeginUserRegistration"},
+        {201, nullptr, "CompleteUserRegistration"},
+        {202, nullptr, "CancelUserRegistration"},
+        {203, nullptr, "DeleteUser"},
+        {204, nullptr, "SetUserPosition"},
+        {205, &ACC_SU::GetProfileEditor, "GetProfileEditor"},
+        {206, nullptr, "CompleteUserRegistrationForcibly"},
+        {210, nullptr, "CreateFloatingRegistrationRequest"}, // 3.0.0+
+        {211, nullptr, "CreateProcedureToRegisterUserWithNintendoAccount"}, // 8.0.0+
+        {212, nullptr, "ResumeProcedureToRegisterUserWithNintendoAccount"}, // 8.0.0+
+        {230, nullptr, "AuthenticateServiceAsync"},
+        {250, nullptr, "GetBaasAccountAdministrator"},
+        {290, nullptr, "ProxyProcedureForGuestLoginWithNintendoAccount"},
+        {291, nullptr, "ProxyProcedureForFloatingRegistrationWithNintendoAccount"}, // 3.0.0+
+        {299, nullptr, "SuspendBackgroundDaemon"},
+        {997, nullptr, "DebugInvalidateTokenCacheForUser"}, // 3.0.0+
+        {998, nullptr, "DebugSetUserStateClose"},
+        {999, nullptr, "DebugSetUserStateOpen"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+ACC_SU::~ACC_SU() = default;
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_su.h

@@ -0,0 +1,18 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/acc/acc.h"
+
+namespace Service::Account {
+
+class ACC_SU final : public Module::Interface {
+public:
+    explicit ACC_SU(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+                    Core::System& system);
+    ~ACC_SU() override;
+};
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_u0.cpp

@@ -0,0 +1,45 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/acc/acc_u0.h"
+
+namespace Service::Account {
+
+ACC_U0::ACC_U0(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+               Core::System& system)
+    : Module::Interface(std::move(module), std::move(profile_manager), system, "acc:u0") {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, &ACC_U0::GetUserCount, "GetUserCount"},
+        {1, &ACC_U0::GetUserExistence, "GetUserExistence"},
+        {2, &ACC_U0::ListAllUsers, "ListAllUsers"},
+        {3, &ACC_U0::ListOpenUsers, "ListOpenUsers"},
+        {4, &ACC_U0::GetLastOpenedUser, "GetLastOpenedUser"},
+        {5, &ACC_U0::GetProfile, "GetProfile"},
+        {6, nullptr, "GetProfileDigest"}, // 3.0.0+
+        {50, &ACC_U0::IsUserRegistrationRequestPermitted, "IsUserRegistrationRequestPermitted"},
+        {51, &ACC_U0::TrySelectUserWithoutInteraction, "TrySelectUserWithoutInteraction"},
+        {60, &ACC_U0::ListOpenContextStoredUsers, "ListOpenContextStoredUsers"}, // 5.0.0 - 5.1.0
+        {99, nullptr, "DebugActivateOpenContextRetention"}, // 6.0.0+
+        {100, &ACC_U0::InitializeApplicationInfo, "InitializeApplicationInfo"},
+        {101, &ACC_U0::GetBaasAccountManagerForApplication, "GetBaasAccountManagerForApplication"},
+        {102, nullptr, "AuthenticateApplicationAsync"},
+        {103, nullptr, "CheckNetworkServiceAvailabilityAsync"}, // 4.0.0+
+        {110, nullptr, "StoreSaveDataThumbnail"},
+        {111, nullptr, "ClearSaveDataThumbnail"},
+        {120, nullptr, "CreateGuestLoginRequest"},
+        {130, &ACC_U0::LoadOpenContext, "LoadOpenContext"}, // 5.0.0+
+        {131, &ACC_U0::ListOpenContextStoredUsers, "ListOpenContextStoredUsers"}, // 6.0.0+
+        {140, &ACC_U0::InitializeApplicationInfoRestricted, "InitializeApplicationInfoRestricted"}, // 6.0.0+
+        {141, &ACC_U0::ListQualifiedUsers, "ListQualifiedUsers"}, // 6.0.0+
+        {150, &ACC_U0::IsUserAccountSwitchLocked, "IsUserAccountSwitchLocked"}, // 6.0.0+
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+ACC_U0::~ACC_U0() = default;
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_u0.h

@@ -0,0 +1,18 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/acc/acc.h"
+
+namespace Service::Account {
+
+class ACC_U0 final : public Module::Interface {
+public:
+    explicit ACC_U0(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+                    Core::System& system);
+    ~ACC_U0() override;
+};
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_u1.cpp

@@ -0,0 +1,53 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/acc/acc_u1.h"
+
+namespace Service::Account {
+
+ACC_U1::ACC_U1(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+               Core::System& system)
+    : Module::Interface(std::move(module), std::move(profile_manager), system, "acc:u1") {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, &ACC_U1::GetUserCount, "GetUserCount"},
+        {1, &ACC_U1::GetUserExistence, "GetUserExistence"},
+        {2, &ACC_U1::ListAllUsers, "ListAllUsers"},
+        {3, &ACC_U1::ListOpenUsers, "ListOpenUsers"},
+        {4, &ACC_U1::GetLastOpenedUser, "GetLastOpenedUser"},
+        {5, &ACC_U1::GetProfile, "GetProfile"},
+        {6, nullptr, "GetProfileDigest"}, // 3.0.0+
+        {50, &ACC_U1::IsUserRegistrationRequestPermitted, "IsUserRegistrationRequestPermitted"},
+        {51, &ACC_U1::TrySelectUserWithoutInteraction, "TrySelectUserWithoutInteraction"},
+        {60, &ACC_U1::ListOpenContextStoredUsers, "ListOpenContextStoredUsers"}, // 5.0.0 - 5.1.0
+        {99, nullptr, "DebugActivateOpenContextRetention"}, // 6.0.0+
+        {100, nullptr, "GetUserRegistrationNotifier"},
+        {101, nullptr, "GetUserStateChangeNotifier"},
+        {102, nullptr, "GetBaasAccountManagerForSystemService"},
+        {103, nullptr, "GetBaasUserAvailabilityChangeNotifier"},
+        {104, nullptr, "GetProfileUpdateNotifier"},
+        {105, nullptr, "CheckNetworkServiceAvailabilityAsync"}, // 4.0.0+
+        {106, nullptr, "GetProfileSyncNotifier"}, // 9.0.0+
+        {110, nullptr, "StoreSaveDataThumbnail"},
+        {111, nullptr, "ClearSaveDataThumbnail"},
+        {112, nullptr, "LoadSaveDataThumbnail"},
+        {113, nullptr, "GetSaveDataThumbnailExistence"}, // 5.0.0+
+        {120, nullptr, "ListOpenUsersInApplication"}, // 10.0.0+
+        {130, nullptr, "ActivateOpenContextRetention"}, // 6.0.0+
+        {140, &ACC_U1::ListQualifiedUsers, "ListQualifiedUsers"}, // 6.0.0+
+        {150, nullptr, "AuthenticateApplicationAsync"}, // 10.0.0+
+        {190, nullptr, "GetUserLastOpenedApplication"}, // 1.0.0 - 9.2.0
+        {191, nullptr, "ActivateOpenContextHolder"}, // 7.0.0+
+        {997, nullptr, "DebugInvalidateTokenCacheForUser"}, // 3.0.0+
+        {998, nullptr, "DebugSetUserStateClose"},
+        {999, nullptr, "DebugSetUserStateOpen"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+ACC_U1::~ACC_U1() = default;
+
+} // namespace Service::Account

src/core/hle/service/acc/acc_u1.h

@@ -0,0 +1,18 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/acc/acc.h"
+
+namespace Service::Account {
+
+class ACC_U1 final : public Module::Interface {
+public:
+    explicit ACC_U1(std::shared_ptr<Module> module, std::shared_ptr<ProfileManager> profile_manager,
+                    Core::System& system);
+    ~ACC_U1() override;
+};
+
+} // namespace Service::Account

src/core/hle/service/acc/errors.h

@@ -0,0 +1,14 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/result.h"
+
+namespace Service::Account {
+
+constexpr ResultCode ERR_ACCOUNTINFO_BAD_APPLICATION{ErrorModule::Account, 22};
+constexpr ResultCode ERR_ACCOUNTINFO_ALREADY_INITIALIZED{ErrorModule::Account, 41};
+
+} // namespace Service::Account

src/core/hle/service/acc/profile_manager.cpp

@@ -0,0 +1,396 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cstring>
+#include <random>
+
+#include <fmt/format.h>
+
+#include "common/file_util.h"
+#include "core/hle/service/acc/profile_manager.h"
+#include "core/settings.h"
+
+namespace Service::Account {
+
+namespace FS = Common::FS;
+using Common::UUID;
+
+struct UserRaw {
+    UUID uuid{Common::INVALID_UUID};
+    UUID uuid2{Common::INVALID_UUID};
+    u64 timestamp{};
+    ProfileUsername username{};
+    ProfileData extra_data{};
+};
+static_assert(sizeof(UserRaw) == 0xC8, "UserRaw has incorrect size.");
+
+struct ProfileDataRaw {
+    INSERT_PADDING_BYTES(0x10);
+    std::array<UserRaw, MAX_USERS> users{};
+};
+static_assert(sizeof(ProfileDataRaw) == 0x650, "ProfileDataRaw has incorrect size.");
+
+// TODO(ogniK): Get actual error codes
+constexpr ResultCode ERROR_TOO_MANY_USERS(ErrorModule::Account, u32(-1));
+constexpr ResultCode ERROR_USER_ALREADY_EXISTS(ErrorModule::Account, u32(-2));
+constexpr ResultCode ERROR_ARGUMENT_IS_NULL(ErrorModule::Account, 20);
+
+constexpr char ACC_SAVE_AVATORS_BASE_PATH[] = "/system/save/8000000000000010/su/avators/";
+
+ProfileManager::ProfileManager() {
+    ParseUserSaveFile();
+
+    if (user_count == 0)
+        CreateNewUser(UUID::Generate(), "yuzu");
+
+    auto current = std::clamp<int>(Settings::values.current_user, 0, MAX_USERS - 1);
+    if (UserExistsIndex(current))
+        current = 0;
+
+    OpenUser(*GetUser(current));
+}
+
+ProfileManager::~ProfileManager() {
+    WriteUserSaveFile();
+}
+
+/// After a users creation it needs to be "registered" to the system. AddToProfiles handles the
+/// internal management of the users profiles
+std::optional<std::size_t> ProfileManager::AddToProfiles(const ProfileInfo& profile) {
+    if (user_count >= MAX_USERS) {
+        return std::nullopt;
+    }
+    profiles[user_count] = profile;
+    return user_count++;
+}
+
+/// Deletes a specific profile based on it's profile index
+bool ProfileManager::RemoveProfileAtIndex(std::size_t index) {
+    if (index >= MAX_USERS || index >= user_count) {
+        return false;
+    }
+    if (index < user_count - 1) {
+        std::rotate(profiles.begin() + index, profiles.begin() + index + 1, profiles.end());
+    }
+    profiles.back() = {};
+    user_count--;
+    return true;
+}
+
+/// Helper function to register a user to the system
+ResultCode ProfileManager::AddUser(const ProfileInfo& user) {
+    if (!AddToProfiles(user)) {
+        return ERROR_TOO_MANY_USERS;
+    }
+    return RESULT_SUCCESS;
+}
+
+/// Create a new user on the system. If the uuid of the user already exists, the user is not
+/// created.
+ResultCode ProfileManager::CreateNewUser(UUID uuid, const ProfileUsername& username) {
+    if (user_count == MAX_USERS) {
+        return ERROR_TOO_MANY_USERS;
+    }
+    if (!uuid) {
+        return ERROR_ARGUMENT_IS_NULL;
+    }
+    if (username[0] == 0x0) {
+        return ERROR_ARGUMENT_IS_NULL;
+    }
+    if (std::any_of(profiles.begin(), profiles.end(),
+                    [&uuid](const ProfileInfo& profile) { return uuid == profile.user_uuid; })) {
+        return ERROR_USER_ALREADY_EXISTS;
+    }
+
+    return AddUser({
+        .user_uuid = uuid,
+        .username = username,
+        .creation_time = 0,
+        .data = {},
+        .is_open = false,
+    });
+}
+
+/// Creates a new user on the system. This function allows a much simpler method of registration
+/// specifically by allowing an std::string for the username. This is required specifically since
+/// we're loading a string straight from the config
+ResultCode ProfileManager::CreateNewUser(UUID uuid, const std::string& username) {
+    ProfileUsername username_output{};
+
+    if (username.size() > username_output.size()) {
+        std::copy_n(username.begin(), username_output.size(), username_output.begin());
+    } else {
+        std::copy(username.begin(), username.end(), username_output.begin());
+    }
+    return CreateNewUser(uuid, username_output);
+}
+
+std::optional<UUID> ProfileManager::GetUser(std::size_t index) const {
+    if (index >= MAX_USERS) {
+        return std::nullopt;
+    }
+
+    return profiles[index].user_uuid;
+}
+
+/// Returns a users profile index based on their user id.
+std::optional<std::size_t> ProfileManager::GetUserIndex(const UUID& uuid) const {
+    if (!uuid) {
+        return std::nullopt;
+    }
+
+    const auto iter = std::find_if(profiles.begin(), profiles.end(),
+                                   [&uuid](const ProfileInfo& p) { return p.user_uuid == uuid; });
+    if (iter == profiles.end()) {
+        return std::nullopt;
+    }
+
+    return static_cast<std::size_t>(std::distance(profiles.begin(), iter));
+}
+
+/// Returns a users profile index based on their profile
+std::optional<std::size_t> ProfileManager::GetUserIndex(const ProfileInfo& user) const {
+    return GetUserIndex(user.user_uuid);
+}
+
+/// Returns the data structure used by the switch when GetProfileBase is called on acc:*
+bool ProfileManager::GetProfileBase(std::optional<std::size_t> index, ProfileBase& profile) const {
+    if (!index || index >= MAX_USERS) {
+        return false;
+    }
+    const auto& prof_info = profiles[*index];
+    profile.user_uuid = prof_info.user_uuid;
+    profile.username = prof_info.username;
+    profile.timestamp = prof_info.creation_time;
+    return true;
+}
+
+/// Returns the data structure used by the switch when GetProfileBase is called on acc:*
+bool ProfileManager::GetProfileBase(UUID uuid, ProfileBase& profile) const {
+    const auto idx = GetUserIndex(uuid);
+    return GetProfileBase(idx, profile);
+}
+
+/// Returns the data structure used by the switch when GetProfileBase is called on acc:*
+bool ProfileManager::GetProfileBase(const ProfileInfo& user, ProfileBase& profile) const {
+    return GetProfileBase(user.user_uuid, profile);
+}
+
+/// Returns the current user count on the system. We keep a variable which tracks the count so we
+/// don't have to loop the internal profile array every call.
+
+std::size_t ProfileManager::GetUserCount() const {
+    return user_count;
+}
+
+/// Lists the current "opened" users on the system. Users are typically not open until they sign
+/// into something or pick a profile. As of right now users should all be open until qlaunch is
+/// booting
+
+std::size_t ProfileManager::GetOpenUserCount() const {
+    return std::count_if(profiles.begin(), profiles.end(),
+                         [](const ProfileInfo& p) { return p.is_open; });
+}
+
+/// Checks if a user id exists in our profile manager
+bool ProfileManager::UserExists(UUID uuid) const {
+    return GetUserIndex(uuid).has_value();
+}
+
+bool ProfileManager::UserExistsIndex(std::size_t index) const {
+    if (index >= MAX_USERS)
+        return false;
+    return profiles[index].user_uuid.uuid != Common::INVALID_UUID;
+}
+
+/// Opens a specific user
+void ProfileManager::OpenUser(UUID uuid) {
+    const auto idx = GetUserIndex(uuid);
+    if (!idx) {
+        return;
+    }
+
+    profiles[*idx].is_open = true;
+    last_opened_user = uuid;
+}
+
+/// Closes a specific user
+void ProfileManager::CloseUser(UUID uuid) {
+    const auto idx = GetUserIndex(uuid);
+    if (!idx) {
+        return;
+    }
+
+    profiles[*idx].is_open = false;
+}
+
+/// Gets all valid user ids on the system
+UserIDArray ProfileManager::GetAllUsers() const {
+    UserIDArray output;
+    std::transform(profiles.begin(), profiles.end(), output.begin(),
+                   [](const ProfileInfo& p) { return p.user_uuid; });
+    return output;
+}
+
+/// Get all the open users on the system and zero out the rest of the data. This is specifically
+/// needed for GetOpenUsers and we need to ensure the rest of the output buffer is zero'd out
+UserIDArray ProfileManager::GetOpenUsers() const {
+    UserIDArray output;
+    std::transform(profiles.begin(), profiles.end(), output.begin(), [](const ProfileInfo& p) {
+        if (p.is_open)
+            return p.user_uuid;
+        return UUID{Common::INVALID_UUID};
+    });
+    std::stable_partition(output.begin(), output.end(), [](const UUID& uuid) { return uuid; });
+    return output;
+}
+
+/// Returns the last user which was opened
+UUID ProfileManager::GetLastOpenedUser() const {
+    return last_opened_user;
+}
+
+/// Return the users profile base and the unknown arbitary data.
+bool ProfileManager::GetProfileBaseAndData(std::optional<std::size_t> index, ProfileBase& profile,
+                                           ProfileData& data) const {
+    if (GetProfileBase(index, profile)) {
+        data = profiles[*index].data;
+        return true;
+    }
+    return false;
+}
+
+/// Return the users profile base and the unknown arbitary data.
+bool ProfileManager::GetProfileBaseAndData(UUID uuid, ProfileBase& profile,
+                                           ProfileData& data) const {
+    const auto idx = GetUserIndex(uuid);
+    return GetProfileBaseAndData(idx, profile, data);
+}
+
+/// Return the users profile base and the unknown arbitary data.
+bool ProfileManager::GetProfileBaseAndData(const ProfileInfo& user, ProfileBase& profile,
+                                           ProfileData& data) const {
+    return GetProfileBaseAndData(user.user_uuid, profile, data);
+}
+
+/// Returns if the system is allowing user registrations or not
+bool ProfileManager::CanSystemRegisterUser() const {
+    return false; // TODO(ogniK): Games shouldn't have
+                  // access to user registration, when we
+    // emulate qlaunch. Update this to dynamically change.
+}
+
+bool ProfileManager::RemoveUser(UUID uuid) {
+    const auto index = GetUserIndex(uuid);
+    if (!index) {
+        return false;
+    }
+
+    profiles[*index] = ProfileInfo{};
+    std::stable_partition(profiles.begin(), profiles.end(),
+                          [](const ProfileInfo& profile) { return profile.user_uuid; });
+    return true;
+}
+
+bool ProfileManager::SetProfileBase(UUID uuid, const ProfileBase& profile_new) {
+    const auto index = GetUserIndex(uuid);
+    if (!index || profile_new.user_uuid == UUID(Common::INVALID_UUID)) {
+        return false;
+    }
+
+    auto& profile = profiles[*index];
+    profile.user_uuid = profile_new.user_uuid;
+    profile.username = profile_new.username;
+    profile.creation_time = profile_new.timestamp;
+
+    return true;
+}
+
+bool ProfileManager::SetProfileBaseAndData(Common::UUID uuid, const ProfileBase& profile_new,
+                                           const ProfileData& data_new) {
+    const auto index = GetUserIndex(uuid);
+    if (index.has_value() && SetProfileBase(uuid, profile_new)) {
+        profiles[*index].data = data_new;
+        return true;
+    }
+
+    return false;
+}
+
+void ProfileManager::ParseUserSaveFile() {
+    const FS::IOFile save(
+        FS::GetUserPath(FS::UserPath::NANDDir) + ACC_SAVE_AVATORS_BASE_PATH + "profiles.dat", "rb");
+
+    if (!save.IsOpen()) {
+        LOG_WARNING(Service_ACC, "Failed to load profile data from save data... Generating new "
+                                 "user 'yuzu' with random UUID.");
+        return;
+    }
+
+    ProfileDataRaw data;
+    if (save.ReadBytes(&data, sizeof(ProfileDataRaw)) != sizeof(ProfileDataRaw)) {
+        LOG_WARNING(Service_ACC, "profiles.dat is smaller than expected... Generating new user "
+                                 "'yuzu' with random UUID.");
+        return;
+    }
+
+    for (const auto& user : data.users) {
+        if (user.uuid == UUID(Common::INVALID_UUID)) {
+            continue;
+        }
+
+        AddUser({
+            .user_uuid = user.uuid,
+            .username = user.username,
+            .creation_time = user.timestamp,
+            .data = user.extra_data,
+            .is_open = false,
+        });
+    }
+
+    std::stable_partition(profiles.begin(), profiles.end(),
+                          [](const ProfileInfo& profile) { return profile.user_uuid; });
+}
+
+void ProfileManager::WriteUserSaveFile() {
+    ProfileDataRaw raw{};
+
+    for (std::size_t i = 0; i < MAX_USERS; ++i) {
+        raw.users[i] = {
+            .uuid = profiles[i].user_uuid,
+            .uuid2 = profiles[i].user_uuid,
+            .timestamp = profiles[i].creation_time,
+            .username = profiles[i].username,
+            .extra_data = profiles[i].data,
+        };
+    }
+
+    const auto raw_path = FS::GetUserPath(FS::UserPath::NANDDir) + "/system/save/8000000000000010";
+    if (FS::Exists(raw_path) && !FS::IsDirectory(raw_path)) {
+        FS::Delete(raw_path);
+    }
+
+    const auto path =
+        FS::GetUserPath(FS::UserPath::NANDDir) + ACC_SAVE_AVATORS_BASE_PATH + "profiles.dat";
+
+    if (!FS::CreateFullPath(path)) {
+        LOG_WARNING(Service_ACC, "Failed to create full path of profiles.dat. Create the directory "
+                                 "nand/system/save/8000000000000010/su/avators to mitigate this "
+                                 "issue.");
+        return;
+    }
+
+    FS::IOFile save(path, "wb");
+
+    if (!save.IsOpen()) {
+        LOG_WARNING(Service_ACC, "Failed to write save data to file... No changes to user data "
+                                 "made in current session will be saved.");
+        return;
+    }
+
+    save.Resize(sizeof(ProfileDataRaw));
+    save.WriteBytes(&raw, sizeof(ProfileDataRaw));
+}
+
+}; // namespace Service::Account

src/core/hle/service/acc/profile_manager.h

@@ -0,0 +1,109 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <optional>
+
+#include "common/common_types.h"
+#include "common/swap.h"
+#include "common/uuid.h"
+#include "core/hle/result.h"
+
+namespace Service::Account {
+
+constexpr std::size_t MAX_USERS{8};
+constexpr std::size_t profile_username_size{32};
+
+using ProfileUsername = std::array<u8, profile_username_size>;
+using UserIDArray = std::array<Common::UUID, MAX_USERS>;
+
+/// Contains extra data related to a user.
+/// TODO: RE this structure
+struct ProfileData {
+    INSERT_PADDING_WORDS(1);
+    u32 icon_id{};
+    u8 bg_color_id{};
+    INSERT_PADDING_BYTES(0x7);
+    INSERT_PADDING_BYTES(0x10);
+    INSERT_PADDING_BYTES(0x60);
+};
+static_assert(sizeof(ProfileData) == 0x80, "ProfileData structure has incorrect size");
+
+/// This holds general information about a users profile. This is where we store all the information
+/// based on a specific user
+struct ProfileInfo {
+    Common::UUID user_uuid{Common::INVALID_UUID};
+    ProfileUsername username{};
+    u64 creation_time{};
+    ProfileData data{}; // TODO(ognik): Work out what this is
+    bool is_open{};
+};
+
+struct ProfileBase {
+    Common::UUID user_uuid{Common::INVALID_UUID};
+    u64_le timestamp{};
+    ProfileUsername username{};
+
+    // Zero out all the fields to make the profile slot considered "Empty"
+    void Invalidate() {
+        user_uuid.Invalidate();
+        timestamp = 0;
+        username.fill(0);
+    }
+};
+static_assert(sizeof(ProfileBase) == 0x38, "ProfileBase is an invalid size");
+
+/// The profile manager is used for handling multiple user profiles at once. It keeps track of open
+/// users, all the accounts registered on the "system" as well as fetching individual "ProfileInfo"
+/// objects
+class ProfileManager {
+public:
+    ProfileManager();
+    ~ProfileManager();
+
+    ResultCode AddUser(const ProfileInfo& user);
+    ResultCode CreateNewUser(Common::UUID uuid, const ProfileUsername& username);
+    ResultCode CreateNewUser(Common::UUID uuid, const std::string& username);
+    std::optional<Common::UUID> GetUser(std::size_t index) const;
+    std::optional<std::size_t> GetUserIndex(const Common::UUID& uuid) const;
+    std::optional<std::size_t> GetUserIndex(const ProfileInfo& user) const;
+    bool GetProfileBase(std::optional<std::size_t> index, ProfileBase& profile) const;
+    bool GetProfileBase(Common::UUID uuid, ProfileBase& profile) const;
+    bool GetProfileBase(const ProfileInfo& user, ProfileBase& profile) const;
+    bool GetProfileBaseAndData(std::optional<std::size_t> index, ProfileBase& profile,
+                               ProfileData& data) const;
+    bool GetProfileBaseAndData(Common::UUID uuid, ProfileBase& profile, ProfileData& data) const;
+    bool GetProfileBaseAndData(const ProfileInfo& user, ProfileBase& profile,
+                               ProfileData& data) const;
+    std::size_t GetUserCount() const;
+    std::size_t GetOpenUserCount() const;
+    bool UserExists(Common::UUID uuid) const;
+    bool UserExistsIndex(std::size_t index) const;
+    void OpenUser(Common::UUID uuid);
+    void CloseUser(Common::UUID uuid);
+    UserIDArray GetOpenUsers() const;
+    UserIDArray GetAllUsers() const;
+    Common::UUID GetLastOpenedUser() const;
+
+    bool CanSystemRegisterUser() const;
+
+    bool RemoveUser(Common::UUID uuid);
+    bool SetProfileBase(Common::UUID uuid, const ProfileBase& profile_new);
+    bool SetProfileBaseAndData(Common::UUID uuid, const ProfileBase& profile_new,
+                               const ProfileData& data_new);
+
+private:
+    void ParseUserSaveFile();
+    void WriteUserSaveFile();
+    std::optional<std::size_t> AddToProfiles(const ProfileInfo& profile);
+    bool RemoveProfileAtIndex(std::size_t index);
+
+    std::array<ProfileInfo, MAX_USERS> profiles{};
+    std::size_t user_count{};
+    Common::UUID last_opened_user{Common::INVALID_UUID};
+};
+
+}; // namespace Service::Account

src/core/hle/service/am/am.h

@@ -0,0 +1,332 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <chrono>
+#include <memory>
+#include <queue>
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/service.h"
+
+namespace Kernel {
+class KernelCore;
+class TransferMemory;
+} // namespace Kernel
+
+namespace Service::NVFlinger {
+class NVFlinger;
+}
+
+namespace Service::AM {
+
+enum SystemLanguage {
+    Japanese = 0,
+    English = 1, // en-US
+    French = 2,
+    German = 3,
+    Italian = 4,
+    Spanish = 5,
+    Chinese = 6,
+    Korean = 7,
+    Dutch = 8,
+    Portuguese = 9,
+    Russian = 10,
+    Taiwanese = 11,
+    BritishEnglish = 12, // en-GB
+    CanadianFrench = 13,
+    LatinAmericanSpanish = 14, // es-419
+    // 4.0.0+
+    SimplifiedChinese = 15,
+    TraditionalChinese = 16,
+};
+
+class AppletMessageQueue {
+public:
+    enum class AppletMessage : u32 {
+        NoMessage = 0,
+        ExitRequested = 4,
+        FocusStateChanged = 15,
+        OperationModeChanged = 30,
+        PerformanceModeChanged = 31,
+    };
+
+    explicit AppletMessageQueue(Kernel::KernelCore& kernel);
+    ~AppletMessageQueue();
+
+    const std::shared_ptr<Kernel::ReadableEvent>& GetMesssageRecieveEvent() const;
+    const std::shared_ptr<Kernel::ReadableEvent>& GetOperationModeChangedEvent() const;
+    void PushMessage(AppletMessage msg);
+    AppletMessage PopMessage();
+    std::size_t GetMessageCount() const;
+    void OperationModeChanged();
+    void RequestExit();
+
+private:
+    std::queue<AppletMessage> messages;
+    Kernel::EventPair on_new_message;
+    Kernel::EventPair on_operation_mode_changed;
+};
+
+class IWindowController final : public ServiceFramework<IWindowController> {
+public:
+    explicit IWindowController(Core::System& system_);
+    ~IWindowController() override;
+
+private:
+    void GetAppletResourceUserId(Kernel::HLERequestContext& ctx);
+    void AcquireForegroundRights(Kernel::HLERequestContext& ctx);
+};
+
+class IAudioController final : public ServiceFramework<IAudioController> {
+public:
+    explicit IAudioController(Core::System& system_);
+    ~IAudioController() override;
+
+private:
+    void SetExpectedMasterVolume(Kernel::HLERequestContext& ctx);
+    void GetMainAppletExpectedMasterVolume(Kernel::HLERequestContext& ctx);
+    void GetLibraryAppletExpectedMasterVolume(Kernel::HLERequestContext& ctx);
+    void ChangeMainAppletMasterVolume(Kernel::HLERequestContext& ctx);
+    void SetTransparentAudioRate(Kernel::HLERequestContext& ctx);
+
+    static constexpr float min_allowed_volume = 0.0f;
+    static constexpr float max_allowed_volume = 1.0f;
+
+    float main_applet_volume{0.25f};
+    float library_applet_volume{max_allowed_volume};
+    float transparent_volume_rate{min_allowed_volume};
+
+    // Volume transition fade time in nanoseconds.
+    // e.g. If the main applet volume was 0% and was changed to 50%
+    //      with a fade of 50ns, then over the course of 50ns,
+    //      the volume will gradually fade up to 50%
+    std::chrono::nanoseconds fade_time_ns{0};
+};
+
+class IDisplayController final : public ServiceFramework<IDisplayController> {
+public:
+    explicit IDisplayController(Core::System& system_);
+    ~IDisplayController() override;
+};
+
+class IDebugFunctions final : public ServiceFramework<IDebugFunctions> {
+public:
+    explicit IDebugFunctions(Core::System& system_);
+    ~IDebugFunctions() override;
+};
+
+class ISelfController final : public ServiceFramework<ISelfController> {
+public:
+    explicit ISelfController(Core::System& system_, NVFlinger::NVFlinger& nvflinger_);
+    ~ISelfController() override;
+
+private:
+    void Exit(Kernel::HLERequestContext& ctx);
+    void LockExit(Kernel::HLERequestContext& ctx);
+    void UnlockExit(Kernel::HLERequestContext& ctx);
+    void EnterFatalSection(Kernel::HLERequestContext& ctx);
+    void LeaveFatalSection(Kernel::HLERequestContext& ctx);
+    void GetLibraryAppletLaunchableEvent(Kernel::HLERequestContext& ctx);
+    void SetScreenShotPermission(Kernel::HLERequestContext& ctx);
+    void SetOperationModeChangedNotification(Kernel::HLERequestContext& ctx);
+    void SetPerformanceModeChangedNotification(Kernel::HLERequestContext& ctx);
+    void SetFocusHandlingMode(Kernel::HLERequestContext& ctx);
+    void SetRestartMessageEnabled(Kernel::HLERequestContext& ctx);
+    void SetOutOfFocusSuspendingEnabled(Kernel::HLERequestContext& ctx);
+    void SetAlbumImageOrientation(Kernel::HLERequestContext& ctx);
+    void CreateManagedDisplayLayer(Kernel::HLERequestContext& ctx);
+    void CreateManagedDisplaySeparableLayer(Kernel::HLERequestContext& ctx);
+    void SetHandlesRequestToDisplay(Kernel::HLERequestContext& ctx);
+    void SetIdleTimeDetectionExtension(Kernel::HLERequestContext& ctx);
+    void GetIdleTimeDetectionExtension(Kernel::HLERequestContext& ctx);
+    void SetAutoSleepDisabled(Kernel::HLERequestContext& ctx);
+    void IsAutoSleepDisabled(Kernel::HLERequestContext& ctx);
+    void GetAccumulatedSuspendedTickValue(Kernel::HLERequestContext& ctx);
+    void GetAccumulatedSuspendedTickChangedEvent(Kernel::HLERequestContext& ctx);
+
+    enum class ScreenshotPermission : u32 {
+        Inherit = 0,
+        Enable = 1,
+        Disable = 2,
+    };
+
+    NVFlinger::NVFlinger& nvflinger;
+    Kernel::EventPair launchable_event;
+    Kernel::EventPair accumulated_suspended_tick_changed_event;
+
+    u32 idle_time_detection_extension = 0;
+    u64 num_fatal_sections_entered = 0;
+    bool is_auto_sleep_disabled = false;
+    ScreenshotPermission screenshot_permission = ScreenshotPermission::Inherit;
+};
+
+class ICommonStateGetter final : public ServiceFramework<ICommonStateGetter> {
+public:
+    explicit ICommonStateGetter(Core::System& system_,
+                                std::shared_ptr<AppletMessageQueue> msg_queue_);
+    ~ICommonStateGetter() override;
+
+private:
+    enum class FocusState : u8 {
+        InFocus = 1,
+        NotInFocus = 2,
+    };
+
+    enum class OperationMode : u8 {
+        Handheld = 0,
+        Docked = 1,
+    };
+
+    void GetEventHandle(Kernel::HLERequestContext& ctx);
+    void ReceiveMessage(Kernel::HLERequestContext& ctx);
+    void GetCurrentFocusState(Kernel::HLERequestContext& ctx);
+    void GetDefaultDisplayResolutionChangeEvent(Kernel::HLERequestContext& ctx);
+    void GetOperationMode(Kernel::HLERequestContext& ctx);
+    void GetPerformanceMode(Kernel::HLERequestContext& ctx);
+    void GetBootMode(Kernel::HLERequestContext& ctx);
+    void IsVrModeEnabled(Kernel::HLERequestContext& ctx);
+    void SetVrModeEnabled(Kernel::HLERequestContext& ctx);
+    void SetLcdBacklighOffEnabled(Kernel::HLERequestContext& ctx);
+    void EndVrModeEx(Kernel::HLERequestContext& ctx);
+    void GetDefaultDisplayResolution(Kernel::HLERequestContext& ctx);
+    void SetCpuBoostMode(Kernel::HLERequestContext& ctx);
+
+    std::shared_ptr<AppletMessageQueue> msg_queue;
+    bool vr_mode_state{};
+};
+
+class IStorageImpl {
+public:
+    virtual ~IStorageImpl();
+    virtual std::vector<u8>& GetData() = 0;
+    virtual const std::vector<u8>& GetData() const = 0;
+    virtual std::size_t GetSize() const = 0;
+};
+
+class IStorage final : public ServiceFramework<IStorage> {
+public:
+    explicit IStorage(Core::System& system_, std::vector<u8>&& buffer);
+    ~IStorage() override;
+
+    std::vector<u8>& GetData() {
+        return impl->GetData();
+    }
+
+    const std::vector<u8>& GetData() const {
+        return impl->GetData();
+    }
+
+    std::size_t GetSize() const {
+        return impl->GetSize();
+    }
+
+private:
+    void Register();
+    void Open(Kernel::HLERequestContext& ctx);
+
+    std::shared_ptr<IStorageImpl> impl;
+};
+
+class IStorageAccessor final : public ServiceFramework<IStorageAccessor> {
+public:
+    explicit IStorageAccessor(Core::System& system_, IStorage& backing_);
+    ~IStorageAccessor() override;
+
+private:
+    void GetSize(Kernel::HLERequestContext& ctx);
+    void Write(Kernel::HLERequestContext& ctx);
+    void Read(Kernel::HLERequestContext& ctx);
+
+    IStorage& backing;
+};
+
+class ILibraryAppletCreator final : public ServiceFramework<ILibraryAppletCreator> {
+public:
+    explicit ILibraryAppletCreator(Core::System& system_);
+    ~ILibraryAppletCreator() override;
+
+private:
+    void CreateLibraryApplet(Kernel::HLERequestContext& ctx);
+    void CreateStorage(Kernel::HLERequestContext& ctx);
+    void CreateTransferMemoryStorage(Kernel::HLERequestContext& ctx);
+};
+
+class IApplicationFunctions final : public ServiceFramework<IApplicationFunctions> {
+public:
+    explicit IApplicationFunctions(Core::System& system_);
+    ~IApplicationFunctions() override;
+
+private:
+    void PopLaunchParameter(Kernel::HLERequestContext& ctx);
+    void CreateApplicationAndRequestToStartForQuest(Kernel::HLERequestContext& ctx);
+    void EnsureSaveData(Kernel::HLERequestContext& ctx);
+    void SetTerminateResult(Kernel::HLERequestContext& ctx);
+    void GetDisplayVersion(Kernel::HLERequestContext& ctx);
+    void GetDesiredLanguage(Kernel::HLERequestContext& ctx);
+    void InitializeGamePlayRecording(Kernel::HLERequestContext& ctx);
+    void SetGamePlayRecordingState(Kernel::HLERequestContext& ctx);
+    void NotifyRunning(Kernel::HLERequestContext& ctx);
+    void GetPseudoDeviceId(Kernel::HLERequestContext& ctx);
+    void ExtendSaveData(Kernel::HLERequestContext& ctx);
+    void GetSaveDataSize(Kernel::HLERequestContext& ctx);
+    void BeginBlockingHomeButtonShortAndLongPressed(Kernel::HLERequestContext& ctx);
+    void EndBlockingHomeButtonShortAndLongPressed(Kernel::HLERequestContext& ctx);
+    void BeginBlockingHomeButton(Kernel::HLERequestContext& ctx);
+    void EndBlockingHomeButton(Kernel::HLERequestContext& ctx);
+    void EnableApplicationCrashReport(Kernel::HLERequestContext& ctx);
+    void InitializeApplicationCopyrightFrameBuffer(Kernel::HLERequestContext& ctx);
+    void SetApplicationCopyrightImage(Kernel::HLERequestContext& ctx);
+    void SetApplicationCopyrightVisibility(Kernel::HLERequestContext& ctx);
+    void QueryApplicationPlayStatistics(Kernel::HLERequestContext& ctx);
+    void QueryApplicationPlayStatisticsByUid(Kernel::HLERequestContext& ctx);
+    void ExecuteProgram(Kernel::HLERequestContext& ctx);
+    void ClearUserChannel(Kernel::HLERequestContext& ctx);
+    void UnpopToUserChannel(Kernel::HLERequestContext& ctx);
+    void GetPreviousProgramIndex(Kernel::HLERequestContext& ctx);
+    void GetGpuErrorDetectedSystemEvent(Kernel::HLERequestContext& ctx);
+    void GetFriendInvitationStorageChannelEvent(Kernel::HLERequestContext& ctx);
+
+    bool launch_popped_application_specific = false;
+    bool launch_popped_account_preselect = false;
+    s32 previous_program_index{-1};
+    Kernel::EventPair gpu_error_detected_event;
+    Kernel::EventPair friend_invitation_storage_channel_event;
+};
+
+class IHomeMenuFunctions final : public ServiceFramework<IHomeMenuFunctions> {
+public:
+    explicit IHomeMenuFunctions(Core::System& system_);
+    ~IHomeMenuFunctions() override;
+
+private:
+    void RequestToGetForeground(Kernel::HLERequestContext& ctx);
+    void GetPopFromGeneralChannelEvent(Kernel::HLERequestContext& ctx);
+
+    Kernel::EventPair pop_from_general_channel_event;
+};
+
+class IGlobalStateController final : public ServiceFramework<IGlobalStateController> {
+public:
+    explicit IGlobalStateController(Core::System& system_);
+    ~IGlobalStateController() override;
+};
+
+class IApplicationCreator final : public ServiceFramework<IApplicationCreator> {
+public:
+    explicit IApplicationCreator(Core::System& system_);
+    ~IApplicationCreator() override;
+};
+
+class IProcessWindingController final : public ServiceFramework<IProcessWindingController> {
+public:
+    explicit IProcessWindingController(Core::System& system_);
+    ~IProcessWindingController() override;
+};
+
+/// Registers all AM services with the specified service manager.
+void InstallInterfaces(SM::ServiceManager& service_manager, NVFlinger::NVFlinger& nvflinger,
+                       Core::System& system);
+
+} // namespace Service::AM

src/core/hle/service/am/applet_ae.cpp

@@ -0,0 +1,278 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applet_ae.h"
+#include "core/hle/service/nvflinger/nvflinger.h"
+
+namespace Service::AM {
+
+class ILibraryAppletProxy final : public ServiceFramework<ILibraryAppletProxy> {
+public:
+    explicit ILibraryAppletProxy(NVFlinger::NVFlinger& nvflinger_,
+                                 std::shared_ptr<AppletMessageQueue> msg_queue_,
+                                 Core::System& system_)
+        : ServiceFramework{system_, "ILibraryAppletProxy"}, nvflinger{nvflinger_},
+          msg_queue{std::move(msg_queue_)} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &ILibraryAppletProxy::GetCommonStateGetter, "GetCommonStateGetter"},
+            {1, &ILibraryAppletProxy::GetSelfController, "GetSelfController"},
+            {2, &ILibraryAppletProxy::GetWindowController, "GetWindowController"},
+            {3, &ILibraryAppletProxy::GetAudioController, "GetAudioController"},
+            {4, &ILibraryAppletProxy::GetDisplayController, "GetDisplayController"},
+            {10, &ILibraryAppletProxy::GetProcessWindingController, "GetProcessWindingController"},
+            {11, &ILibraryAppletProxy::GetLibraryAppletCreator, "GetLibraryAppletCreator"},
+            {20, &ILibraryAppletProxy::GetApplicationFunctions, "GetApplicationFunctions"},
+            {21, nullptr, "GetAppletCommonFunctions"},
+            {1000, &ILibraryAppletProxy::GetDebugFunctions, "GetDebugFunctions"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void GetCommonStateGetter(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ICommonStateGetter>(system, msg_queue);
+    }
+
+    void GetSelfController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ISelfController>(system, nvflinger);
+    }
+
+    void GetWindowController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IWindowController>(system);
+    }
+
+    void GetAudioController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IAudioController>(system);
+    }
+
+    void GetDisplayController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDisplayController>(system);
+    }
+
+    void GetProcessWindingController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IProcessWindingController>(system);
+    }
+
+    void GetDebugFunctions(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDebugFunctions>(system);
+    }
+
+    void GetLibraryAppletCreator(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ILibraryAppletCreator>(system);
+    }
+
+    void GetApplicationFunctions(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IApplicationFunctions>(system);
+    }
+
+    NVFlinger::NVFlinger& nvflinger;
+    std::shared_ptr<AppletMessageQueue> msg_queue;
+};
+
+class ISystemAppletProxy final : public ServiceFramework<ISystemAppletProxy> {
+public:
+    explicit ISystemAppletProxy(NVFlinger::NVFlinger& nvflinger_,
+                                std::shared_ptr<AppletMessageQueue> msg_queue_,
+                                Core::System& system_)
+        : ServiceFramework{system_, "ISystemAppletProxy"}, nvflinger{nvflinger_},
+          msg_queue{std::move(msg_queue_)} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &ISystemAppletProxy::GetCommonStateGetter, "GetCommonStateGetter"},
+            {1, &ISystemAppletProxy::GetSelfController, "GetSelfController"},
+            {2, &ISystemAppletProxy::GetWindowController, "GetWindowController"},
+            {3, &ISystemAppletProxy::GetAudioController, "GetAudioController"},
+            {4, &ISystemAppletProxy::GetDisplayController, "GetDisplayController"},
+            {10, nullptr, "GetProcessWindingController"},
+            {11, &ISystemAppletProxy::GetLibraryAppletCreator, "GetLibraryAppletCreator"},
+            {20, &ISystemAppletProxy::GetHomeMenuFunctions, "GetHomeMenuFunctions"},
+            {21, &ISystemAppletProxy::GetGlobalStateController, "GetGlobalStateController"},
+            {22, &ISystemAppletProxy::GetApplicationCreator, "GetApplicationCreator"},
+            {23, nullptr, "GetAppletCommonFunctions"},
+            {1000, &ISystemAppletProxy::GetDebugFunctions, "GetDebugFunctions"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void GetCommonStateGetter(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ICommonStateGetter>(system, msg_queue);
+    }
+
+    void GetSelfController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ISelfController>(system, nvflinger);
+    }
+
+    void GetWindowController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IWindowController>(system);
+    }
+
+    void GetAudioController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IAudioController>(system);
+    }
+
+    void GetDisplayController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDisplayController>(system);
+    }
+
+    void GetDebugFunctions(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDebugFunctions>(system);
+    }
+
+    void GetLibraryAppletCreator(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ILibraryAppletCreator>(system);
+    }
+
+    void GetHomeMenuFunctions(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IHomeMenuFunctions>(system);
+    }
+
+    void GetGlobalStateController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IGlobalStateController>(system);
+    }
+
+    void GetApplicationCreator(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IApplicationCreator>(system);
+    }
+
+    NVFlinger::NVFlinger& nvflinger;
+    std::shared_ptr<AppletMessageQueue> msg_queue;
+};
+
+void AppletAE::OpenSystemAppletProxy(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_AM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<ISystemAppletProxy>(nvflinger, msg_queue, system);
+}
+
+void AppletAE::OpenLibraryAppletProxy(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_AM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<ILibraryAppletProxy>(nvflinger, msg_queue, system);
+}
+
+void AppletAE::OpenLibraryAppletProxyOld(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_AM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<ILibraryAppletProxy>(nvflinger, msg_queue, system);
+}
+
+AppletAE::AppletAE(NVFlinger::NVFlinger& nvflinger_, std::shared_ptr<AppletMessageQueue> msg_queue_,
+                   Core::System& system_)
+    : ServiceFramework{system_, "appletAE"}, nvflinger{nvflinger_}, msg_queue{
+                                                                        std::move(msg_queue_)} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {100, &AppletAE::OpenSystemAppletProxy, "OpenSystemAppletProxy"},
+        {200, &AppletAE::OpenLibraryAppletProxyOld, "OpenLibraryAppletProxyOld"},
+        {201, &AppletAE::OpenLibraryAppletProxy, "OpenLibraryAppletProxy"},
+        {300, nullptr, "OpenOverlayAppletProxy"},
+        {350, nullptr, "OpenSystemApplicationProxy"},
+        {400, nullptr, "CreateSelfLibraryAppletCreatorForDevelop"},
+        {410, nullptr, "GetSystemAppletControllerForDebug"},
+        {1000, nullptr, "GetDebugFunctions"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AppletAE::~AppletAE() = default;
+
+const std::shared_ptr<AppletMessageQueue>& AppletAE::GetMessageQueue() const {
+    return msg_queue;
+}
+
+} // namespace Service::AM

src/core/hle/service/am/applet_ae.h

@@ -0,0 +1,42 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/service/service.h"
+
+namespace Service {
+namespace FileSystem {
+class FileSystemController;
+}
+
+namespace NVFlinger {
+class NVFlinger;
+}
+
+namespace AM {
+
+class AppletMessageQueue;
+
+class AppletAE final : public ServiceFramework<AppletAE> {
+public:
+    explicit AppletAE(NVFlinger::NVFlinger& nvflinger_,
+                      std::shared_ptr<AppletMessageQueue> msg_queue_, Core::System& system_);
+    ~AppletAE() override;
+
+    const std::shared_ptr<AppletMessageQueue>& GetMessageQueue() const;
+
+private:
+    void OpenSystemAppletProxy(Kernel::HLERequestContext& ctx);
+    void OpenLibraryAppletProxy(Kernel::HLERequestContext& ctx);
+    void OpenLibraryAppletProxyOld(Kernel::HLERequestContext& ctx);
+
+    NVFlinger::NVFlinger& nvflinger;
+    std::shared_ptr<AppletMessageQueue> msg_queue;
+};
+
+} // namespace AM
+} // namespace Service

src/core/hle/service/am/applet_oe.cpp

@@ -0,0 +1,130 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applet_oe.h"
+#include "core/hle/service/nvflinger/nvflinger.h"
+
+namespace Service::AM {
+
+class IApplicationProxy final : public ServiceFramework<IApplicationProxy> {
+public:
+    explicit IApplicationProxy(NVFlinger::NVFlinger& nvflinger_,
+                               std::shared_ptr<AppletMessageQueue> msg_queue_,
+                               Core::System& system_)
+        : ServiceFramework{system_, "IApplicationProxy"}, nvflinger{nvflinger_},
+          msg_queue{std::move(msg_queue_)} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IApplicationProxy::GetCommonStateGetter, "GetCommonStateGetter"},
+            {1, &IApplicationProxy::GetSelfController, "GetSelfController"},
+            {2, &IApplicationProxy::GetWindowController, "GetWindowController"},
+            {3, &IApplicationProxy::GetAudioController, "GetAudioController"},
+            {4, &IApplicationProxy::GetDisplayController, "GetDisplayController"},
+            {10, nullptr, "GetProcessWindingController"},
+            {11, &IApplicationProxy::GetLibraryAppletCreator, "GetLibraryAppletCreator"},
+            {20, &IApplicationProxy::GetApplicationFunctions, "GetApplicationFunctions"},
+            {1000, &IApplicationProxy::GetDebugFunctions, "GetDebugFunctions"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void GetAudioController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IAudioController>(system);
+    }
+
+    void GetDisplayController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDisplayController>(system);
+    }
+
+    void GetDebugFunctions(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDebugFunctions>(system);
+    }
+
+    void GetWindowController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IWindowController>(system);
+    }
+
+    void GetSelfController(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ISelfController>(system, nvflinger);
+    }
+
+    void GetCommonStateGetter(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ICommonStateGetter>(system, msg_queue);
+    }
+
+    void GetLibraryAppletCreator(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<ILibraryAppletCreator>(system);
+    }
+
+    void GetApplicationFunctions(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_AM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IApplicationFunctions>(system);
+    }
+
+    NVFlinger::NVFlinger& nvflinger;
+    std::shared_ptr<AppletMessageQueue> msg_queue;
+};
+
+void AppletOE::OpenApplicationProxy(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_AM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IApplicationProxy>(nvflinger, msg_queue, system);
+}
+
+AppletOE::AppletOE(NVFlinger::NVFlinger& nvflinger_, std::shared_ptr<AppletMessageQueue> msg_queue_,
+                   Core::System& system_)
+    : ServiceFramework{system_, "appletOE"}, nvflinger{nvflinger_}, msg_queue{
+                                                                        std::move(msg_queue_)} {
+    static const FunctionInfo functions[] = {
+        {0, &AppletOE::OpenApplicationProxy, "OpenApplicationProxy"},
+    };
+    RegisterHandlers(functions);
+}
+
+AppletOE::~AppletOE() = default;
+
+const std::shared_ptr<AppletMessageQueue>& AppletOE::GetMessageQueue() const {
+    return msg_queue;
+}
+
+} // namespace Service::AM

src/core/hle/service/am/applet_oe.h

@@ -0,0 +1,40 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/service/service.h"
+
+namespace Service {
+namespace FileSystem {
+class FileSystemController;
+}
+
+namespace NVFlinger {
+class NVFlinger;
+}
+
+namespace AM {
+
+class AppletMessageQueue;
+
+class AppletOE final : public ServiceFramework<AppletOE> {
+public:
+    explicit AppletOE(NVFlinger::NVFlinger& nvflinger_,
+                      std::shared_ptr<AppletMessageQueue> msg_queue_, Core::System& system_);
+    ~AppletOE() override;
+
+    const std::shared_ptr<AppletMessageQueue>& GetMessageQueue() const;
+
+private:
+    void OpenApplicationProxy(Kernel::HLERequestContext& ctx);
+
+    NVFlinger::NVFlinger& nvflinger;
+    std::shared_ptr<AppletMessageQueue> msg_queue;
+};
+
+} // namespace AM
+} // namespace Service

src/core/hle/service/am/applets/applets.cpp

@@ -0,0 +1,268 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cstring>
+#include "common/assert.h"
+#include "core/core.h"
+#include "core/frontend/applets/controller.h"
+#include "core/frontend/applets/error.h"
+#include "core/frontend/applets/general_frontend.h"
+#include "core/frontend/applets/profile_select.h"
+#include "core/frontend/applets/software_keyboard.h"
+#include "core/frontend/applets/web_browser.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/server_session.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/applets.h"
+#include "core/hle/service/am/applets/controller.h"
+#include "core/hle/service/am/applets/error.h"
+#include "core/hle/service/am/applets/general_backend.h"
+#include "core/hle/service/am/applets/profile_select.h"
+#include "core/hle/service/am/applets/software_keyboard.h"
+#include "core/hle/service/am/applets/web_browser.h"
+
+namespace Service::AM::Applets {
+
+AppletDataBroker::AppletDataBroker(Kernel::KernelCore& kernel) {
+    state_changed_event =
+        Kernel::WritableEvent::CreateEventPair(kernel, "ILibraryAppletAccessor:StateChangedEvent");
+    pop_out_data_event =
+        Kernel::WritableEvent::CreateEventPair(kernel, "ILibraryAppletAccessor:PopDataOutEvent");
+    pop_interactive_out_data_event = Kernel::WritableEvent::CreateEventPair(
+        kernel, "ILibraryAppletAccessor:PopInteractiveDataOutEvent");
+}
+
+AppletDataBroker::~AppletDataBroker() = default;
+
+AppletDataBroker::RawChannelData AppletDataBroker::PeekDataToAppletForDebug() const {
+    std::vector<std::vector<u8>> out_normal;
+
+    for (const auto& storage : in_channel) {
+        out_normal.push_back(storage->GetData());
+    }
+
+    std::vector<std::vector<u8>> out_interactive;
+
+    for (const auto& storage : in_interactive_channel) {
+        out_interactive.push_back(storage->GetData());
+    }
+
+    return {std::move(out_normal), std::move(out_interactive)};
+}
+
+std::shared_ptr<IStorage> AppletDataBroker::PopNormalDataToGame() {
+    if (out_channel.empty())
+        return nullptr;
+
+    auto out = std::move(out_channel.front());
+    out_channel.pop_front();
+    pop_out_data_event.writable->Clear();
+    return out;
+}
+
+std::shared_ptr<IStorage> AppletDataBroker::PopNormalDataToApplet() {
+    if (in_channel.empty())
+        return nullptr;
+
+    auto out = std::move(in_channel.front());
+    in_channel.pop_front();
+    return out;
+}
+
+std::shared_ptr<IStorage> AppletDataBroker::PopInteractiveDataToGame() {
+    if (out_interactive_channel.empty())
+        return nullptr;
+
+    auto out = std::move(out_interactive_channel.front());
+    out_interactive_channel.pop_front();
+    pop_interactive_out_data_event.writable->Clear();
+    return out;
+}
+
+std::shared_ptr<IStorage> AppletDataBroker::PopInteractiveDataToApplet() {
+    if (in_interactive_channel.empty())
+        return nullptr;
+
+    auto out = std::move(in_interactive_channel.front());
+    in_interactive_channel.pop_front();
+    return out;
+}
+
+void AppletDataBroker::PushNormalDataFromGame(std::shared_ptr<IStorage>&& storage) {
+    in_channel.emplace_back(std::move(storage));
+}
+
+void AppletDataBroker::PushNormalDataFromApplet(std::shared_ptr<IStorage>&& storage) {
+    out_channel.emplace_back(std::move(storage));
+    pop_out_data_event.writable->Signal();
+}
+
+void AppletDataBroker::PushInteractiveDataFromGame(std::shared_ptr<IStorage>&& storage) {
+    in_interactive_channel.emplace_back(std::move(storage));
+}
+
+void AppletDataBroker::PushInteractiveDataFromApplet(std::shared_ptr<IStorage>&& storage) {
+    out_interactive_channel.emplace_back(std::move(storage));
+    pop_interactive_out_data_event.writable->Signal();
+}
+
+void AppletDataBroker::SignalStateChanged() const {
+    state_changed_event.writable->Signal();
+}
+
+std::shared_ptr<Kernel::ReadableEvent> AppletDataBroker::GetNormalDataEvent() const {
+    return pop_out_data_event.readable;
+}
+
+std::shared_ptr<Kernel::ReadableEvent> AppletDataBroker::GetInteractiveDataEvent() const {
+    return pop_interactive_out_data_event.readable;
+}
+
+std::shared_ptr<Kernel::ReadableEvent> AppletDataBroker::GetStateChangedEvent() const {
+    return state_changed_event.readable;
+}
+
+Applet::Applet(Kernel::KernelCore& kernel_) : broker{kernel_} {}
+
+Applet::~Applet() = default;
+
+void Applet::Initialize() {
+    const auto common = broker.PopNormalDataToApplet();
+    ASSERT(common != nullptr);
+
+    const auto common_data = common->GetData();
+
+    ASSERT(common_data.size() >= sizeof(CommonArguments));
+    std::memcpy(&common_args, common_data.data(), sizeof(CommonArguments));
+
+    initialized = true;
+}
+
+AppletFrontendSet::AppletFrontendSet() = default;
+
+AppletFrontendSet::AppletFrontendSet(ControllerApplet controller_applet, ErrorApplet error_applet,
+                                     ParentalControlsApplet parental_controls_applet,
+                                     PhotoViewer photo_viewer_, ProfileSelect profile_select_,
+                                     SoftwareKeyboard software_keyboard_, WebBrowser web_browser_)
+    : controller{std::move(controller_applet)}, error{std::move(error_applet)},
+      parental_controls{std::move(parental_controls_applet)},
+      photo_viewer{std::move(photo_viewer_)}, profile_select{std::move(profile_select_)},
+      software_keyboard{std::move(software_keyboard_)}, web_browser{std::move(web_browser_)} {}
+
+AppletFrontendSet::~AppletFrontendSet() = default;
+
+AppletFrontendSet::AppletFrontendSet(AppletFrontendSet&&) noexcept = default;
+
+AppletFrontendSet& AppletFrontendSet::operator=(AppletFrontendSet&&) noexcept = default;
+
+AppletManager::AppletManager(Core::System& system_) : system{system_} {}
+
+AppletManager::~AppletManager() = default;
+
+const AppletFrontendSet& AppletManager::GetAppletFrontendSet() const {
+    return frontend;
+}
+
+void AppletManager::SetAppletFrontendSet(AppletFrontendSet set) {
+    if (set.controller != nullptr) {
+        frontend.controller = std::move(set.controller);
+    }
+
+    if (set.error != nullptr) {
+        frontend.error = std::move(set.error);
+    }
+
+    if (set.parental_controls != nullptr) {
+        frontend.parental_controls = std::move(set.parental_controls);
+    }
+
+    if (set.photo_viewer != nullptr) {
+        frontend.photo_viewer = std::move(set.photo_viewer);
+    }
+
+    if (set.profile_select != nullptr) {
+        frontend.profile_select = std::move(set.profile_select);
+    }
+
+    if (set.software_keyboard != nullptr) {
+        frontend.software_keyboard = std::move(set.software_keyboard);
+    }
+
+    if (set.web_browser != nullptr) {
+        frontend.web_browser = std::move(set.web_browser);
+    }
+}
+
+void AppletManager::SetDefaultAppletFrontendSet() {
+    ClearAll();
+    SetDefaultAppletsIfMissing();
+}
+
+void AppletManager::SetDefaultAppletsIfMissing() {
+    if (frontend.controller == nullptr) {
+        frontend.controller =
+            std::make_unique<Core::Frontend::DefaultControllerApplet>(system.ServiceManager());
+    }
+
+    if (frontend.error == nullptr) {
+        frontend.error = std::make_unique<Core::Frontend::DefaultErrorApplet>();
+    }
+
+    if (frontend.parental_controls == nullptr) {
+        frontend.parental_controls =
+            std::make_unique<Core::Frontend::DefaultParentalControlsApplet>();
+    }
+
+    if (frontend.photo_viewer == nullptr) {
+        frontend.photo_viewer = std::make_unique<Core::Frontend::DefaultPhotoViewerApplet>();
+    }
+
+    if (frontend.profile_select == nullptr) {
+        frontend.profile_select = std::make_unique<Core::Frontend::DefaultProfileSelectApplet>();
+    }
+
+    if (frontend.software_keyboard == nullptr) {
+        frontend.software_keyboard =
+            std::make_unique<Core::Frontend::DefaultSoftwareKeyboardApplet>();
+    }
+
+    if (frontend.web_browser == nullptr) {
+        frontend.web_browser = std::make_unique<Core::Frontend::DefaultWebBrowserApplet>();
+    }
+}
+
+void AppletManager::ClearAll() {
+    frontend = {};
+}
+
+std::shared_ptr<Applet> AppletManager::GetApplet(AppletId id) const {
+    switch (id) {
+    case AppletId::Auth:
+        return std::make_shared<Auth>(system, *frontend.parental_controls);
+    case AppletId::Controller:
+        return std::make_shared<Controller>(system, *frontend.controller);
+    case AppletId::Error:
+        return std::make_shared<Error>(system, *frontend.error);
+    case AppletId::ProfileSelect:
+        return std::make_shared<ProfileSelect>(system, *frontend.profile_select);
+    case AppletId::SoftwareKeyboard:
+        return std::make_shared<SoftwareKeyboard>(system, *frontend.software_keyboard);
+    case AppletId::Web:
+    case AppletId::Shop:
+    case AppletId::OfflineWeb:
+    case AppletId::LoginShare:
+    case AppletId::WebAuth:
+        return std::make_shared<WebBrowser>(system, *frontend.web_browser);
+    case AppletId::PhotoViewer:
+        return std::make_shared<PhotoViewer>(system, *frontend.photo_viewer);
+    default:
+        UNIMPLEMENTED_MSG(
+            "No backend implementation exists for applet_id={:02X}! Falling back to stub applet.",
+            static_cast<u8>(id));
+        return std::make_shared<StubApplet>(system, id);
+    }
+}
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/applets.h

@@ -0,0 +1,209 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <queue>
+#include "common/swap.h"
+#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/writable_event.h"
+
+union ResultCode;
+
+namespace Core {
+class System;
+}
+
+namespace Core::Frontend {
+class ControllerApplet;
+class ECommerceApplet;
+class ErrorApplet;
+class ParentalControlsApplet;
+class PhotoViewerApplet;
+class ProfileSelectApplet;
+class SoftwareKeyboardApplet;
+class WebBrowserApplet;
+} // namespace Core::Frontend
+
+namespace Kernel {
+class KernelCore;
+}
+
+namespace Service::AM {
+
+class IStorage;
+
+namespace Applets {
+
+enum class AppletId : u32 {
+    OverlayDisplay = 0x02,
+    QLaunch = 0x03,
+    Starter = 0x04,
+    Auth = 0x0A,
+    Cabinet = 0x0B,
+    Controller = 0x0C,
+    DataErase = 0x0D,
+    Error = 0x0E,
+    NetConnect = 0x0F,
+    ProfileSelect = 0x10,
+    SoftwareKeyboard = 0x11,
+    MiiEdit = 0x12,
+    Web = 0x13,
+    Shop = 0x14,
+    PhotoViewer = 0x15,
+    Settings = 0x16,
+    OfflineWeb = 0x17,
+    LoginShare = 0x18,
+    WebAuth = 0x19,
+    MyPage = 0x1A,
+};
+
+class AppletDataBroker final {
+public:
+    explicit AppletDataBroker(Kernel::KernelCore& kernel_);
+    ~AppletDataBroker();
+
+    struct RawChannelData {
+        std::vector<std::vector<u8>> normal;
+        std::vector<std::vector<u8>> interactive;
+    };
+
+    // Retrieves but does not pop the data sent to applet.
+    RawChannelData PeekDataToAppletForDebug() const;
+
+    std::shared_ptr<IStorage> PopNormalDataToGame();
+    std::shared_ptr<IStorage> PopNormalDataToApplet();
+
+    std::shared_ptr<IStorage> PopInteractiveDataToGame();
+    std::shared_ptr<IStorage> PopInteractiveDataToApplet();
+
+    void PushNormalDataFromGame(std::shared_ptr<IStorage>&& storage);
+    void PushNormalDataFromApplet(std::shared_ptr<IStorage>&& storage);
+
+    void PushInteractiveDataFromGame(std::shared_ptr<IStorage>&& storage);
+    void PushInteractiveDataFromApplet(std::shared_ptr<IStorage>&& storage);
+
+    void SignalStateChanged() const;
+
+    std::shared_ptr<Kernel::ReadableEvent> GetNormalDataEvent() const;
+    std::shared_ptr<Kernel::ReadableEvent> GetInteractiveDataEvent() const;
+    std::shared_ptr<Kernel::ReadableEvent> GetStateChangedEvent() const;
+
+private:
+    // Queues are named from applet's perspective
+
+    // PopNormalDataToApplet and PushNormalDataFromGame
+    std::deque<std::shared_ptr<IStorage>> in_channel;
+
+    // PopNormalDataToGame and PushNormalDataFromApplet
+    std::deque<std::shared_ptr<IStorage>> out_channel;
+
+    // PopInteractiveDataToApplet and PushInteractiveDataFromGame
+    std::deque<std::shared_ptr<IStorage>> in_interactive_channel;
+
+    // PopInteractiveDataToGame and PushInteractiveDataFromApplet
+    std::deque<std::shared_ptr<IStorage>> out_interactive_channel;
+
+    Kernel::EventPair state_changed_event;
+
+    // Signaled on PushNormalDataFromApplet
+    Kernel::EventPair pop_out_data_event;
+
+    // Signaled on PushInteractiveDataFromApplet
+    Kernel::EventPair pop_interactive_out_data_event;
+};
+
+class Applet {
+public:
+    explicit Applet(Kernel::KernelCore& kernel_);
+    virtual ~Applet();
+
+    virtual void Initialize();
+
+    virtual bool TransactionComplete() const = 0;
+    virtual ResultCode GetStatus() const = 0;
+    virtual void ExecuteInteractive() = 0;
+    virtual void Execute() = 0;
+
+    bool IsInitialized() const {
+        return initialized;
+    }
+
+    AppletDataBroker& GetBroker() {
+        return broker;
+    }
+
+    const AppletDataBroker& GetBroker() const {
+        return broker;
+    }
+
+protected:
+    struct CommonArguments {
+        u32_le arguments_version;
+        u32_le size;
+        u32_le library_version;
+        u32_le theme_color;
+        u8 play_startup_sound;
+        u64_le system_tick;
+    };
+    static_assert(sizeof(CommonArguments) == 0x20, "CommonArguments has incorrect size.");
+
+    CommonArguments common_args{};
+    AppletDataBroker broker;
+    bool initialized = false;
+};
+
+struct AppletFrontendSet {
+    using ControllerApplet = std::unique_ptr<Core::Frontend::ControllerApplet>;
+    using ErrorApplet = std::unique_ptr<Core::Frontend::ErrorApplet>;
+    using ParentalControlsApplet = std::unique_ptr<Core::Frontend::ParentalControlsApplet>;
+    using PhotoViewer = std::unique_ptr<Core::Frontend::PhotoViewerApplet>;
+    using ProfileSelect = std::unique_ptr<Core::Frontend::ProfileSelectApplet>;
+    using SoftwareKeyboard = std::unique_ptr<Core::Frontend::SoftwareKeyboardApplet>;
+    using WebBrowser = std::unique_ptr<Core::Frontend::WebBrowserApplet>;
+
+    AppletFrontendSet();
+    AppletFrontendSet(ControllerApplet controller_applet, ErrorApplet error_applet,
+                      ParentalControlsApplet parental_controls_applet, PhotoViewer photo_viewer_,
+                      ProfileSelect profile_select_, SoftwareKeyboard software_keyboard_,
+                      WebBrowser web_browser_);
+    ~AppletFrontendSet();
+
+    AppletFrontendSet(const AppletFrontendSet&) = delete;
+    AppletFrontendSet& operator=(const AppletFrontendSet&) = delete;
+
+    AppletFrontendSet(AppletFrontendSet&&) noexcept;
+    AppletFrontendSet& operator=(AppletFrontendSet&&) noexcept;
+
+    ControllerApplet controller;
+    ErrorApplet error;
+    ParentalControlsApplet parental_controls;
+    PhotoViewer photo_viewer;
+    ProfileSelect profile_select;
+    SoftwareKeyboard software_keyboard;
+    WebBrowser web_browser;
+};
+
+class AppletManager {
+public:
+    explicit AppletManager(Core::System& system_);
+    ~AppletManager();
+
+    const AppletFrontendSet& GetAppletFrontendSet() const;
+
+    void SetAppletFrontendSet(AppletFrontendSet set);
+    void SetDefaultAppletFrontendSet();
+    void SetDefaultAppletsIfMissing();
+    void ClearAll();
+
+    std::shared_ptr<Applet> GetApplet(AppletId id) const;
+
+private:
+    AppletFrontendSet frontend;
+    Core::System& system;
+};
+
+} // namespace Applets
+} // namespace Service::AM

src/core/hle/service/am/applets/controller.cpp

@@ -0,0 +1,251 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <cstring>
+
+#include "common/assert.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/frontend/applets/controller.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/controller.h"
+#include "core/hle/service/hid/controllers/npad.h"
+
+namespace Service::AM::Applets {
+
+// This error code (0x183ACA) is thrown when the applet fails to initialize.
+[[maybe_unused]] constexpr ResultCode ERR_CONTROLLER_APPLET_3101{ErrorModule::HID, 3101};
+// This error code (0x183CCA) is thrown when the u32 result in ControllerSupportResultInfo is 2.
+[[maybe_unused]] constexpr ResultCode ERR_CONTROLLER_APPLET_3102{ErrorModule::HID, 3102};
+
+static Core::Frontend::ControllerParameters ConvertToFrontendParameters(
+    ControllerSupportArgPrivate private_arg, ControllerSupportArgHeader header, bool enable_text,
+    std::vector<IdentificationColor> identification_colors, std::vector<ExplainText> text) {
+    HID::Controller_NPad::NpadStyleSet npad_style_set;
+    npad_style_set.raw = private_arg.style_set;
+
+    return {
+        .min_players = std::max(s8{1}, header.player_count_min),
+        .max_players = header.player_count_max,
+        .keep_controllers_connected = header.enable_take_over_connection,
+        .enable_single_mode = header.enable_single_mode,
+        .enable_border_color = header.enable_identification_color,
+        .border_colors = std::move(identification_colors),
+        .enable_explain_text = enable_text,
+        .explain_text = std::move(text),
+        .allow_pro_controller = npad_style_set.pro_controller == 1,
+        .allow_handheld = npad_style_set.handheld == 1,
+        .allow_dual_joycons = npad_style_set.joycon_dual == 1,
+        .allow_left_joycon = npad_style_set.joycon_left == 1,
+        .allow_right_joycon = npad_style_set.joycon_right == 1,
+    };
+}
+
+Controller::Controller(Core::System& system_, const Core::Frontend::ControllerApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend{frontend_}, system{system_} {}
+
+Controller::~Controller() = default;
+
+void Controller::Initialize() {
+    Applet::Initialize();
+
+    LOG_INFO(Service_HID, "Initializing Controller Applet.");
+
+    LOG_DEBUG(Service_HID,
+              "Initializing Applet with common_args: arg_version={}, lib_version={}, "
+              "play_startup_sound={}, size={}, system_tick={}, theme_color={}",
+              common_args.arguments_version, common_args.library_version,
+              common_args.play_startup_sound, common_args.size, common_args.system_tick,
+              common_args.theme_color);
+
+    controller_applet_version = ControllerAppletVersion{common_args.library_version};
+
+    const auto private_arg_storage = broker.PopNormalDataToApplet();
+    ASSERT(private_arg_storage != nullptr);
+
+    const auto& private_arg = private_arg_storage->GetData();
+    ASSERT(private_arg.size() == sizeof(ControllerSupportArgPrivate));
+
+    std::memcpy(&controller_private_arg, private_arg.data(), private_arg.size());
+    ASSERT_MSG(controller_private_arg.arg_private_size == sizeof(ControllerSupportArgPrivate),
+               "Unknown ControllerSupportArgPrivate revision={} with size={}",
+               controller_applet_version, controller_private_arg.arg_private_size);
+
+    // Some games such as Cave Story+ set invalid values for the ControllerSupportMode.
+    // Defer to arg_size to set the ControllerSupportMode.
+    if (controller_private_arg.mode >= ControllerSupportMode::MaxControllerSupportMode) {
+        switch (controller_private_arg.arg_size) {
+        case sizeof(ControllerSupportArgOld):
+        case sizeof(ControllerSupportArgNew):
+            controller_private_arg.mode = ControllerSupportMode::ShowControllerSupport;
+            break;
+        case sizeof(ControllerUpdateFirmwareArg):
+            controller_private_arg.mode = ControllerSupportMode::ShowControllerFirmwareUpdate;
+            break;
+        default:
+            UNIMPLEMENTED_MSG("Unknown ControllerPrivateArg mode={} with arg_size={}",
+                              controller_private_arg.mode, controller_private_arg.arg_size);
+            controller_private_arg.mode = ControllerSupportMode::ShowControllerSupport;
+            break;
+        }
+    }
+
+    // Some games such as Cave Story+ set invalid values for the ControllerSupportCaller.
+    // This is always 0 (Application) except with ShowControllerFirmwareUpdateForSystem.
+    if (controller_private_arg.caller >= ControllerSupportCaller::MaxControllerSupportCaller) {
+        if (controller_private_arg.flag_1 &&
+            controller_private_arg.mode == ControllerSupportMode::ShowControllerFirmwareUpdate) {
+            controller_private_arg.caller = ControllerSupportCaller::System;
+        } else {
+            controller_private_arg.caller = ControllerSupportCaller::Application;
+        }
+    }
+
+    switch (controller_private_arg.mode) {
+    case ControllerSupportMode::ShowControllerSupport:
+    case ControllerSupportMode::ShowControllerStrapGuide: {
+        const auto user_arg_storage = broker.PopNormalDataToApplet();
+        ASSERT(user_arg_storage != nullptr);
+
+        const auto& user_arg = user_arg_storage->GetData();
+        switch (controller_applet_version) {
+        case ControllerAppletVersion::Version3:
+        case ControllerAppletVersion::Version4:
+        case ControllerAppletVersion::Version5:
+            ASSERT(user_arg.size() == sizeof(ControllerSupportArgOld));
+            std::memcpy(&controller_user_arg_old, user_arg.data(), user_arg.size());
+            break;
+        case ControllerAppletVersion::Version7:
+            ASSERT(user_arg.size() == sizeof(ControllerSupportArgNew));
+            std::memcpy(&controller_user_arg_new, user_arg.data(), user_arg.size());
+            break;
+        default:
+            UNIMPLEMENTED_MSG("Unknown ControllerSupportArg revision={} with size={}",
+                              controller_applet_version, controller_private_arg.arg_size);
+            ASSERT(user_arg.size() >= sizeof(ControllerSupportArgNew));
+            std::memcpy(&controller_user_arg_new, user_arg.data(), sizeof(ControllerSupportArgNew));
+            break;
+        }
+        break;
+    }
+    case ControllerSupportMode::ShowControllerFirmwareUpdate: {
+        const auto update_arg_storage = broker.PopNormalDataToApplet();
+        ASSERT(update_arg_storage != nullptr);
+
+        const auto& update_arg = update_arg_storage->GetData();
+        ASSERT(update_arg.size() == sizeof(ControllerUpdateFirmwareArg));
+
+        std::memcpy(&controller_update_arg, update_arg.data(), update_arg.size());
+        break;
+    }
+    default: {
+        UNIMPLEMENTED_MSG("Unimplemented ControllerSupportMode={}", controller_private_arg.mode);
+        break;
+    }
+    }
+}
+
+bool Controller::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode Controller::GetStatus() const {
+    return status;
+}
+
+void Controller::ExecuteInteractive() {
+    UNREACHABLE_MSG("Attempted to call interactive execution on non-interactive applet.");
+}
+
+void Controller::Execute() {
+    switch (controller_private_arg.mode) {
+    case ControllerSupportMode::ShowControllerSupport: {
+        const auto parameters = [this] {
+            switch (controller_applet_version) {
+            case ControllerAppletVersion::Version3:
+            case ControllerAppletVersion::Version4:
+            case ControllerAppletVersion::Version5:
+                return ConvertToFrontendParameters(
+                    controller_private_arg, controller_user_arg_old.header,
+                    controller_user_arg_old.enable_explain_text,
+                    std::vector<IdentificationColor>(
+                        controller_user_arg_old.identification_colors.begin(),
+                        controller_user_arg_old.identification_colors.end()),
+                    std::vector<ExplainText>(controller_user_arg_old.explain_text.begin(),
+                                             controller_user_arg_old.explain_text.end()));
+            case ControllerAppletVersion::Version7:
+            default:
+                return ConvertToFrontendParameters(
+                    controller_private_arg, controller_user_arg_new.header,
+                    controller_user_arg_new.enable_explain_text,
+                    std::vector<IdentificationColor>(
+                        controller_user_arg_new.identification_colors.begin(),
+                        controller_user_arg_new.identification_colors.end()),
+                    std::vector<ExplainText>(controller_user_arg_new.explain_text.begin(),
+                                             controller_user_arg_new.explain_text.end()));
+            }
+        }();
+
+        is_single_mode = parameters.enable_single_mode;
+
+        LOG_DEBUG(Service_HID,
+                  "Controller Parameters: min_players={}, max_players={}, "
+                  "keep_controllers_connected={}, enable_single_mode={}, enable_border_color={}, "
+                  "enable_explain_text={}, allow_pro_controller={}, allow_handheld={}, "
+                  "allow_dual_joycons={}, allow_left_joycon={}, allow_right_joycon={}",
+                  parameters.min_players, parameters.max_players,
+                  parameters.keep_controllers_connected, parameters.enable_single_mode,
+                  parameters.enable_border_color, parameters.enable_explain_text,
+                  parameters.allow_pro_controller, parameters.allow_handheld,
+                  parameters.allow_dual_joycons, parameters.allow_left_joycon,
+                  parameters.allow_right_joycon);
+
+        frontend.ReconfigureControllers([this] { ConfigurationComplete(); }, parameters);
+        break;
+    }
+    case ControllerSupportMode::ShowControllerStrapGuide:
+    case ControllerSupportMode::ShowControllerFirmwareUpdate:
+        UNIMPLEMENTED_MSG("ControllerSupportMode={} is not implemented",
+                          controller_private_arg.mode);
+        [[fallthrough]];
+    default: {
+        ConfigurationComplete();
+        break;
+    }
+    }
+}
+
+void Controller::ConfigurationComplete() {
+    ControllerSupportResultInfo result_info{};
+
+    const auto& players = Settings::values.players.GetValue();
+
+    // If enable_single_mode is enabled, player_count is 1 regardless of any other parameters.
+    // Otherwise, only count connected players from P1-P8.
+    result_info.player_count =
+        is_single_mode
+            ? 1
+            : static_cast<s8>(std::count_if(players.begin(), players.end() - 2,
+                                            [](const auto& player) { return player.connected; }));
+
+    result_info.selected_id = HID::Controller_NPad::IndexToNPad(std::distance(
+        players.begin(), std::find_if(players.begin(), players.end(),
+                                      [](const auto& player) { return player.connected; })));
+
+    result_info.result = 0;
+
+    LOG_DEBUG(Service_HID, "Result Info: player_count={}, selected_id={}, result={}",
+              result_info.player_count, result_info.selected_id, result_info.result);
+
+    complete = true;
+    out_data = std::vector<u8>(sizeof(ControllerSupportResultInfo));
+    std::memcpy(out_data.data(), &result_info, out_data.size());
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(out_data)));
+    broker.SignalStateChanged();
+}
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/controller.h

@@ -0,0 +1,136 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <vector>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/applets/applets.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM::Applets {
+
+using IdentificationColor = std::array<u8, 4>;
+using ExplainText = std::array<char, 0x81>;
+
+enum class ControllerAppletVersion : u32_le {
+    Version3 = 0x3, // 1.0.0 - 2.3.0
+    Version4 = 0x4, // 3.0.0 - 5.1.0
+    Version5 = 0x5, // 6.0.0 - 7.0.1
+    Version7 = 0x7, // 8.0.0+
+};
+
+enum class ControllerSupportMode : u8 {
+    ShowControllerSupport,
+    ShowControllerStrapGuide,
+    ShowControllerFirmwareUpdate,
+
+    MaxControllerSupportMode,
+};
+
+enum class ControllerSupportCaller : u8 {
+    Application,
+    System,
+
+    MaxControllerSupportCaller,
+};
+
+struct ControllerSupportArgPrivate {
+    u32 arg_private_size{};
+    u32 arg_size{};
+    bool flag_0{};
+    bool flag_1{};
+    ControllerSupportMode mode{};
+    ControllerSupportCaller caller{};
+    u32 style_set{};
+    u32 joy_hold_type{};
+};
+static_assert(sizeof(ControllerSupportArgPrivate) == 0x14,
+              "ControllerSupportArgPrivate has incorrect size.");
+
+struct ControllerSupportArgHeader {
+    s8 player_count_min{};
+    s8 player_count_max{};
+    bool enable_take_over_connection{};
+    bool enable_left_justify{};
+    bool enable_permit_joy_dual{};
+    bool enable_single_mode{};
+    bool enable_identification_color{};
+};
+static_assert(sizeof(ControllerSupportArgHeader) == 0x7,
+              "ControllerSupportArgHeader has incorrect size.");
+
+// LibraryAppletVersion 0x3, 0x4, 0x5
+struct ControllerSupportArgOld {
+    ControllerSupportArgHeader header{};
+    std::array<IdentificationColor, 4> identification_colors{};
+    bool enable_explain_text{};
+    std::array<ExplainText, 4> explain_text{};
+};
+static_assert(sizeof(ControllerSupportArgOld) == 0x21C,
+              "ControllerSupportArgOld has incorrect size.");
+
+// LibraryAppletVersion 0x7
+struct ControllerSupportArgNew {
+    ControllerSupportArgHeader header{};
+    std::array<IdentificationColor, 8> identification_colors{};
+    bool enable_explain_text{};
+    std::array<ExplainText, 8> explain_text{};
+};
+static_assert(sizeof(ControllerSupportArgNew) == 0x430,
+              "ControllerSupportArgNew has incorrect size.");
+
+struct ControllerUpdateFirmwareArg {
+    bool enable_force_update{};
+    INSERT_PADDING_BYTES(3);
+};
+static_assert(sizeof(ControllerUpdateFirmwareArg) == 0x4,
+              "ControllerUpdateFirmwareArg has incorrect size.");
+
+struct ControllerSupportResultInfo {
+    s8 player_count{};
+    INSERT_PADDING_BYTES(3);
+    u32 selected_id{};
+    u32 result{};
+};
+static_assert(sizeof(ControllerSupportResultInfo) == 0xC,
+              "ControllerSupportResultInfo has incorrect size.");
+
+class Controller final : public Applet {
+public:
+    explicit Controller(Core::System& system_, const Core::Frontend::ControllerApplet& frontend_);
+    ~Controller() override;
+
+    void Initialize() override;
+
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void ConfigurationComplete();
+
+private:
+    const Core::Frontend::ControllerApplet& frontend;
+    Core::System& system;
+
+    ControllerAppletVersion controller_applet_version;
+    ControllerSupportArgPrivate controller_private_arg;
+    ControllerSupportArgOld controller_user_arg_old;
+    ControllerSupportArgNew controller_user_arg_new;
+    ControllerUpdateFirmwareArg controller_update_arg;
+    bool complete{false};
+    ResultCode status{RESULT_SUCCESS};
+    bool is_single_mode{false};
+    std::vector<u8> out_data;
+};
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/error.cpp

@@ -0,0 +1,193 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <array>
+#include <cstring>
+#include "common/assert.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/frontend/applets/error.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/error.h"
+#include "core/reporter.h"
+
+namespace Service::AM::Applets {
+
+#pragma pack(push, 4)
+struct ShowError {
+    u8 mode;
+    bool jump;
+    INSERT_UNION_PADDING_BYTES(4);
+    bool use_64bit_error_code;
+    INSERT_UNION_PADDING_BYTES(1);
+    u64 error_code_64;
+    u32 error_code_32;
+};
+static_assert(sizeof(ShowError) == 0x14, "ShowError has incorrect size.");
+#pragma pack(pop)
+
+struct ShowErrorRecord {
+    u8 mode;
+    bool jump;
+    INSERT_UNION_PADDING_BYTES(6);
+    u64 error_code_64;
+    u64 posix_time;
+};
+static_assert(sizeof(ShowErrorRecord) == 0x18, "ShowErrorRecord has incorrect size.");
+
+struct SystemErrorArg {
+    u8 mode;
+    bool jump;
+    INSERT_UNION_PADDING_BYTES(6);
+    u64 error_code_64;
+    std::array<char, 8> language_code;
+    std::array<char, 0x800> main_text;
+    std::array<char, 0x800> detail_text;
+};
+static_assert(sizeof(SystemErrorArg) == 0x1018, "SystemErrorArg has incorrect size.");
+
+struct ApplicationErrorArg {
+    u8 mode;
+    bool jump;
+    INSERT_UNION_PADDING_BYTES(6);
+    u32 error_code;
+    std::array<char, 8> language_code;
+    std::array<char, 0x800> main_text;
+    std::array<char, 0x800> detail_text;
+};
+static_assert(sizeof(ApplicationErrorArg) == 0x1014, "ApplicationErrorArg has incorrect size.");
+
+union Error::ErrorArguments {
+    ShowError error;
+    ShowErrorRecord error_record;
+    SystemErrorArg system_error;
+    ApplicationErrorArg application_error;
+    std::array<u8, 0x1018> raw{};
+};
+
+namespace {
+template <typename T>
+void CopyArgumentData(const std::vector<u8>& data, T& variable) {
+    ASSERT(data.size() >= sizeof(T));
+    std::memcpy(&variable, data.data(), sizeof(T));
+}
+
+ResultCode Decode64BitError(u64 error) {
+    const auto description = (error >> 32) & 0x1FFF;
+    auto module = error & 0x3FF;
+    if (module >= 2000)
+        module -= 2000;
+    module &= 0x1FF;
+    return {static_cast<ErrorModule>(module), static_cast<u32>(description)};
+}
+
+} // Anonymous namespace
+
+Error::Error(Core::System& system_, const Core::Frontend::ErrorApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend{frontend_}, system{system_} {}
+
+Error::~Error() = default;
+
+void Error::Initialize() {
+    Applet::Initialize();
+    args = std::make_unique<ErrorArguments>();
+    complete = false;
+
+    const auto storage = broker.PopNormalDataToApplet();
+    ASSERT(storage != nullptr);
+    const auto data = storage->GetData();
+
+    ASSERT(!data.empty());
+    std::memcpy(&mode, data.data(), sizeof(ErrorAppletMode));
+
+    switch (mode) {
+    case ErrorAppletMode::ShowError:
+        CopyArgumentData(data, args->error);
+        if (args->error.use_64bit_error_code) {
+            error_code = Decode64BitError(args->error.error_code_64);
+        } else {
+            error_code = ResultCode(args->error.error_code_32);
+        }
+        break;
+    case ErrorAppletMode::ShowSystemError:
+        CopyArgumentData(data, args->system_error);
+        error_code = ResultCode(Decode64BitError(args->system_error.error_code_64));
+        break;
+    case ErrorAppletMode::ShowApplicationError:
+        CopyArgumentData(data, args->application_error);
+        error_code = ResultCode(args->application_error.error_code);
+        break;
+    case ErrorAppletMode::ShowErrorRecord:
+        CopyArgumentData(data, args->error_record);
+        error_code = Decode64BitError(args->error_record.error_code_64);
+        break;
+    default:
+        UNIMPLEMENTED_MSG("Unimplemented LibAppletError mode={:02X}!", mode);
+    }
+}
+
+bool Error::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode Error::GetStatus() const {
+    return RESULT_SUCCESS;
+}
+
+void Error::ExecuteInteractive() {
+    UNREACHABLE_MSG("Unexpected interactive applet data!");
+}
+
+void Error::Execute() {
+    if (complete) {
+        return;
+    }
+
+    const auto callback = [this] { DisplayCompleted(); };
+    const auto title_id = system.CurrentProcess()->GetTitleID();
+    const auto& reporter{system.GetReporter()};
+
+    switch (mode) {
+    case ErrorAppletMode::ShowError:
+        reporter.SaveErrorReport(title_id, error_code);
+        frontend.ShowError(error_code, callback);
+        break;
+    case ErrorAppletMode::ShowSystemError:
+    case ErrorAppletMode::ShowApplicationError: {
+        const auto system = mode == ErrorAppletMode::ShowSystemError;
+        const auto& main_text =
+            system ? args->system_error.main_text : args->application_error.main_text;
+        const auto& detail_text =
+            system ? args->system_error.detail_text : args->application_error.detail_text;
+
+        const auto main_text_string =
+            Common::StringFromFixedZeroTerminatedBuffer(main_text.data(), main_text.size());
+        const auto detail_text_string =
+            Common::StringFromFixedZeroTerminatedBuffer(detail_text.data(), detail_text.size());
+
+        reporter.SaveErrorReport(title_id, error_code, main_text_string, detail_text_string);
+        frontend.ShowCustomErrorText(error_code, main_text_string, detail_text_string, callback);
+        break;
+    }
+    case ErrorAppletMode::ShowErrorRecord:
+        reporter.SaveErrorReport(title_id, error_code,
+                                 fmt::format("{:016X}", args->error_record.posix_time));
+        frontend.ShowErrorWithTimestamp(
+            error_code, std::chrono::seconds{args->error_record.posix_time}, callback);
+        break;
+    default:
+        UNIMPLEMENTED_MSG("Unimplemented LibAppletError mode={:02X}!", mode);
+        DisplayCompleted();
+    }
+}
+
+void Error::DisplayCompleted() {
+    complete = true;
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::vector<u8>{}));
+    broker.SignalStateChanged();
+}
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/error.h

@@ -0,0 +1,52 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/result.h"
+#include "core/hle/service/am/applets/applets.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM::Applets {
+
+enum class ErrorAppletMode : u8 {
+    ShowError = 0,
+    ShowSystemError = 1,
+    ShowApplicationError = 2,
+    ShowEula = 3,
+    ShowErrorPctl = 4,
+    ShowErrorRecord = 5,
+    ShowUpdateEula = 8,
+};
+
+class Error final : public Applet {
+public:
+    explicit Error(Core::System& system_, const Core::Frontend::ErrorApplet& frontend_);
+    ~Error() override;
+
+    void Initialize() override;
+
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void DisplayCompleted();
+
+private:
+    union ErrorArguments;
+
+    const Core::Frontend::ErrorApplet& frontend;
+    ResultCode error_code = RESULT_SUCCESS;
+    ErrorAppletMode mode = ErrorAppletMode::ShowError;
+    std::unique_ptr<ErrorArguments> args;
+
+    bool complete = false;
+    Core::System& system;
+};
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/general_backend.cpp

@@ -0,0 +1,253 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <string_view>
+
+#include "common/assert.h"
+#include "common/hex_util.h"
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/frontend/applets/general_frontend.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/general_backend.h"
+#include "core/reporter.h"
+
+namespace Service::AM::Applets {
+
+constexpr ResultCode ERROR_INVALID_PIN{ErrorModule::PCTL, 221};
+
+static void LogCurrentStorage(AppletDataBroker& broker, std::string_view prefix) {
+    std::shared_ptr<IStorage> storage = broker.PopNormalDataToApplet();
+    for (; storage != nullptr; storage = broker.PopNormalDataToApplet()) {
+        const auto data = storage->GetData();
+        LOG_INFO(Service_AM,
+                 "called (STUBBED), during {} received normal data with size={:08X}, data={}",
+                 prefix, data.size(), Common::HexToString(data));
+    }
+
+    storage = broker.PopInteractiveDataToApplet();
+    for (; storage != nullptr; storage = broker.PopInteractiveDataToApplet()) {
+        const auto data = storage->GetData();
+        LOG_INFO(Service_AM,
+                 "called (STUBBED), during {} received interactive data with size={:08X}, data={}",
+                 prefix, data.size(), Common::HexToString(data));
+    }
+}
+
+Auth::Auth(Core::System& system_, Core::Frontend::ParentalControlsApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend{frontend_}, system{system_} {}
+
+Auth::~Auth() = default;
+
+void Auth::Initialize() {
+    Applet::Initialize();
+    complete = false;
+
+    const auto storage = broker.PopNormalDataToApplet();
+    ASSERT(storage != nullptr);
+    const auto data = storage->GetData();
+    ASSERT(data.size() >= 0xC);
+
+    struct Arg {
+        INSERT_PADDING_BYTES(4);
+        AuthAppletType type;
+        u8 arg0;
+        u8 arg1;
+        u8 arg2;
+        INSERT_PADDING_BYTES(1);
+    };
+    static_assert(sizeof(Arg) == 0xC, "Arg (AuthApplet) has incorrect size.");
+
+    Arg arg{};
+    std::memcpy(&arg, data.data(), sizeof(Arg));
+
+    type = arg.type;
+    arg0 = arg.arg0;
+    arg1 = arg.arg1;
+    arg2 = arg.arg2;
+}
+
+bool Auth::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode Auth::GetStatus() const {
+    return successful ? RESULT_SUCCESS : ERROR_INVALID_PIN;
+}
+
+void Auth::ExecuteInteractive() {
+    UNREACHABLE_MSG("Unexpected interactive applet data.");
+}
+
+void Auth::Execute() {
+    if (complete) {
+        return;
+    }
+
+    const auto unimplemented_log = [this] {
+        UNIMPLEMENTED_MSG("Unimplemented Auth applet type for type={:08X}, arg0={:02X}, "
+                          "arg1={:02X}, arg2={:02X}",
+                          type, arg0, arg1, arg2);
+    };
+
+    switch (type) {
+    case AuthAppletType::ShowParentalAuthentication: {
+        const auto callback = [this](bool successful) { AuthFinished(successful); };
+
+        if (arg0 == 1 && arg1 == 0 && arg2 == 1) {
+            // ShowAuthenticatorForConfiguration
+            frontend.VerifyPINForSettings(callback);
+        } else if (arg1 == 0 && arg2 == 0) {
+            // ShowParentalAuthentication(bool)
+            frontend.VerifyPIN(callback, static_cast<bool>(arg0));
+        } else {
+            unimplemented_log();
+        }
+        break;
+    }
+    case AuthAppletType::RegisterParentalPasscode: {
+        const auto callback = [this] { AuthFinished(true); };
+
+        if (arg0 == 0 && arg1 == 0 && arg2 == 0) {
+            // RegisterParentalPasscode
+            frontend.RegisterPIN(callback);
+        } else {
+            unimplemented_log();
+        }
+        break;
+    }
+    case AuthAppletType::ChangeParentalPasscode: {
+        const auto callback = [this] { AuthFinished(true); };
+
+        if (arg0 == 0 && arg1 == 0 && arg2 == 0) {
+            // ChangeParentalPasscode
+            frontend.ChangePIN(callback);
+        } else {
+            unimplemented_log();
+        }
+        break;
+    }
+    default:
+        unimplemented_log();
+    }
+}
+
+void Auth::AuthFinished(bool is_successful) {
+    successful = is_successful;
+
+    struct Return {
+        ResultCode result_code;
+    };
+    static_assert(sizeof(Return) == 0x4, "Return (AuthApplet) has incorrect size.");
+
+    Return return_{GetStatus()};
+
+    std::vector<u8> out(sizeof(Return));
+    std::memcpy(out.data(), &return_, sizeof(Return));
+
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(out)));
+    broker.SignalStateChanged();
+}
+
+PhotoViewer::PhotoViewer(Core::System& system_, const Core::Frontend::PhotoViewerApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend{frontend_}, system{system_} {}
+
+PhotoViewer::~PhotoViewer() = default;
+
+void PhotoViewer::Initialize() {
+    Applet::Initialize();
+    complete = false;
+
+    const auto storage = broker.PopNormalDataToApplet();
+    ASSERT(storage != nullptr);
+    const auto data = storage->GetData();
+    ASSERT(!data.empty());
+    mode = static_cast<PhotoViewerAppletMode>(data[0]);
+}
+
+bool PhotoViewer::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode PhotoViewer::GetStatus() const {
+    return RESULT_SUCCESS;
+}
+
+void PhotoViewer::ExecuteInteractive() {
+    UNREACHABLE_MSG("Unexpected interactive applet data.");
+}
+
+void PhotoViewer::Execute() {
+    if (complete)
+        return;
+
+    const auto callback = [this] { ViewFinished(); };
+    switch (mode) {
+    case PhotoViewerAppletMode::CurrentApp:
+        frontend.ShowPhotosForApplication(system.CurrentProcess()->GetTitleID(), callback);
+        break;
+    case PhotoViewerAppletMode::AllApps:
+        frontend.ShowAllPhotos(callback);
+        break;
+    default:
+        UNIMPLEMENTED_MSG("Unimplemented PhotoViewer applet mode={:02X}!", mode);
+    }
+}
+
+void PhotoViewer::ViewFinished() {
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::vector<u8>{}));
+    broker.SignalStateChanged();
+}
+
+StubApplet::StubApplet(Core::System& system_, AppletId id_)
+    : Applet{system_.Kernel()}, id{id_}, system{system_} {}
+
+StubApplet::~StubApplet() = default;
+
+void StubApplet::Initialize() {
+    LOG_WARNING(Service_AM, "called (STUBBED)");
+    Applet::Initialize();
+
+    const auto data = broker.PeekDataToAppletForDebug();
+    system.GetReporter().SaveUnimplementedAppletReport(
+        static_cast<u32>(id), common_args.arguments_version, common_args.library_version,
+        common_args.theme_color, common_args.play_startup_sound, common_args.system_tick,
+        data.normal, data.interactive);
+
+    LogCurrentStorage(broker, "Initialize");
+}
+
+bool StubApplet::TransactionComplete() const {
+    LOG_WARNING(Service_AM, "called (STUBBED)");
+    return true;
+}
+
+ResultCode StubApplet::GetStatus() const {
+    LOG_WARNING(Service_AM, "called (STUBBED)");
+    return RESULT_SUCCESS;
+}
+
+void StubApplet::ExecuteInteractive() {
+    LOG_WARNING(Service_AM, "called (STUBBED)");
+    LogCurrentStorage(broker, "ExecuteInteractive");
+
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::vector<u8>(0x1000)));
+    broker.PushInteractiveDataFromApplet(
+        std::make_shared<IStorage>(system, std::vector<u8>(0x1000)));
+    broker.SignalStateChanged();
+}
+
+void StubApplet::Execute() {
+    LOG_WARNING(Service_AM, "called (STUBBED)");
+    LogCurrentStorage(broker, "Execute");
+
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::vector<u8>(0x1000)));
+    broker.PushInteractiveDataFromApplet(
+        std::make_shared<IStorage>(system, std::vector<u8>(0x1000)));
+    broker.SignalStateChanged();
+}
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/general_backend.h

@@ -0,0 +1,88 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/am/applets/applets.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM::Applets {
+
+enum class AuthAppletType : u32 {
+    ShowParentalAuthentication,
+    RegisterParentalPasscode,
+    ChangeParentalPasscode,
+};
+
+class Auth final : public Applet {
+public:
+    explicit Auth(Core::System& system_, Core::Frontend::ParentalControlsApplet& frontend_);
+    ~Auth() override;
+
+    void Initialize() override;
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void AuthFinished(bool is_successful = true);
+
+private:
+    Core::Frontend::ParentalControlsApplet& frontend;
+    Core::System& system;
+    bool complete = false;
+    bool successful = false;
+
+    AuthAppletType type = AuthAppletType::ShowParentalAuthentication;
+    u8 arg0 = 0;
+    u8 arg1 = 0;
+    u8 arg2 = 0;
+};
+
+enum class PhotoViewerAppletMode : u8 {
+    CurrentApp = 0,
+    AllApps = 1,
+};
+
+class PhotoViewer final : public Applet {
+public:
+    explicit PhotoViewer(Core::System& system_, const Core::Frontend::PhotoViewerApplet& frontend_);
+    ~PhotoViewer() override;
+
+    void Initialize() override;
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void ViewFinished();
+
+private:
+    const Core::Frontend::PhotoViewerApplet& frontend;
+    bool complete = false;
+    PhotoViewerAppletMode mode = PhotoViewerAppletMode::CurrentApp;
+    Core::System& system;
+};
+
+class StubApplet final : public Applet {
+public:
+    explicit StubApplet(Core::System& system_, AppletId id_);
+    ~StubApplet() override;
+
+    void Initialize() override;
+
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+private:
+    AppletId id;
+    Core::System& system;
+};
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/profile_select.cpp

@@ -0,0 +1,78 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cstring>
+
+#include "common/assert.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/frontend/applets/profile_select.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/profile_select.h"
+
+namespace Service::AM::Applets {
+
+constexpr ResultCode ERR_USER_CANCELLED_SELECTION{ErrorModule::Account, 1};
+
+ProfileSelect::ProfileSelect(Core::System& system_,
+                             const Core::Frontend::ProfileSelectApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend{frontend_}, system{system_} {}
+
+ProfileSelect::~ProfileSelect() = default;
+
+void ProfileSelect::Initialize() {
+    complete = false;
+    status = RESULT_SUCCESS;
+    final_data.clear();
+
+    Applet::Initialize();
+
+    const auto user_config_storage = broker.PopNormalDataToApplet();
+    ASSERT(user_config_storage != nullptr);
+    const auto& user_config = user_config_storage->GetData();
+
+    ASSERT(user_config.size() >= sizeof(UserSelectionConfig));
+    std::memcpy(&config, user_config.data(), sizeof(UserSelectionConfig));
+}
+
+bool ProfileSelect::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode ProfileSelect::GetStatus() const {
+    return status;
+}
+
+void ProfileSelect::ExecuteInteractive() {
+    UNREACHABLE_MSG("Attempted to call interactive execution on non-interactive applet.");
+}
+
+void ProfileSelect::Execute() {
+    if (complete) {
+        broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(final_data)));
+        return;
+    }
+
+    frontend.SelectProfile([this](std::optional<Common::UUID> uuid) { SelectionComplete(uuid); });
+}
+
+void ProfileSelect::SelectionComplete(std::optional<Common::UUID> uuid) {
+    UserSelectionOutput output{};
+
+    if (uuid.has_value() && uuid->uuid != Common::INVALID_UUID) {
+        output.result = 0;
+        output.uuid_selected = uuid->uuid;
+    } else {
+        status = ERR_USER_CANCELLED_SELECTION;
+        output.result = ERR_USER_CANCELLED_SELECTION.raw;
+        output.uuid_selected = Common::INVALID_UUID;
+    }
+
+    final_data = std::vector<u8>(sizeof(UserSelectionOutput));
+    std::memcpy(final_data.data(), &output, final_data.size());
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(final_data)));
+    broker.SignalStateChanged();
+}
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/profile_select.h

@@ -0,0 +1,59 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+
+#include "common/common_funcs.h"
+#include "common/uuid.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/applets/applets.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM::Applets {
+
+struct UserSelectionConfig {
+    // TODO(DarkLordZach): RE this structure
+    // It seems to be flags and the like that determine the UI of the applet on the switch... from
+    // my research this is safe to ignore for now.
+    INSERT_PADDING_BYTES(0xA0);
+};
+static_assert(sizeof(UserSelectionConfig) == 0xA0, "UserSelectionConfig has incorrect size.");
+
+struct UserSelectionOutput {
+    u64 result;
+    u128 uuid_selected;
+};
+static_assert(sizeof(UserSelectionOutput) == 0x18, "UserSelectionOutput has incorrect size.");
+
+class ProfileSelect final : public Applet {
+public:
+    explicit ProfileSelect(Core::System& system_,
+                           const Core::Frontend::ProfileSelectApplet& frontend_);
+    ~ProfileSelect() override;
+
+    void Initialize() override;
+
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void SelectionComplete(std::optional<Common::UUID> uuid);
+
+private:
+    const Core::Frontend::ProfileSelectApplet& frontend;
+
+    UserSelectionConfig config;
+    bool complete = false;
+    ResultCode status = RESULT_SUCCESS;
+    std::vector<u8> final_data;
+    Core::System& system;
+};
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/software_keyboard.cpp

@@ -0,0 +1,196 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cstring>
+#include "common/assert.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/frontend/applets/software_keyboard.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/software_keyboard.h"
+
+namespace Service::AM::Applets {
+
+namespace {
+enum class Request : u32 {
+    Finalize = 0x4,
+    SetUserWordInfo = 0x6,
+    SetCustomizeDic = 0x7,
+    Calc = 0xa,
+    SetCustomizedDictionaries = 0xb,
+    UnsetCustomizedDictionaries = 0xc,
+    UnknownD = 0xd,
+    UnknownE = 0xe,
+};
+constexpr std::size_t SWKBD_INLINE_INIT_SIZE = 0x8;
+constexpr std::size_t SWKBD_OUTPUT_BUFFER_SIZE = 0x7D8;
+constexpr std::size_t SWKBD_OUTPUT_INTERACTIVE_BUFFER_SIZE = 0x7D4;
+constexpr std::size_t DEFAULT_MAX_LENGTH = 500;
+constexpr bool INTERACTIVE_STATUS_OK = false;
+} // Anonymous namespace
+static Core::Frontend::SoftwareKeyboardParameters ConvertToFrontendParameters(
+    KeyboardConfig config, std::u16string initial_text) {
+    Core::Frontend::SoftwareKeyboardParameters params{};
+
+    params.submit_text = Common::UTF16StringFromFixedZeroTerminatedBuffer(
+        config.submit_text.data(), config.submit_text.size());
+    params.header_text = Common::UTF16StringFromFixedZeroTerminatedBuffer(
+        config.header_text.data(), config.header_text.size());
+    params.sub_text = Common::UTF16StringFromFixedZeroTerminatedBuffer(config.sub_text.data(),
+                                                                       config.sub_text.size());
+    params.guide_text = Common::UTF16StringFromFixedZeroTerminatedBuffer(config.guide_text.data(),
+                                                                         config.guide_text.size());
+    params.initial_text = std::move(initial_text);
+    params.max_length = config.length_limit == 0 ? DEFAULT_MAX_LENGTH : config.length_limit;
+    params.password = static_cast<bool>(config.is_password);
+    params.cursor_at_beginning = static_cast<bool>(config.initial_cursor_position);
+    params.value = static_cast<u8>(config.keyset_disable_bitmask);
+
+    return params;
+}
+
+SoftwareKeyboard::SoftwareKeyboard(Core::System& system_,
+                                   const Core::Frontend::SoftwareKeyboardApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend{frontend_}, system{system_} {}
+
+SoftwareKeyboard::~SoftwareKeyboard() = default;
+
+void SoftwareKeyboard::Initialize() {
+    complete = false;
+    is_inline = false;
+    initial_text.clear();
+    final_data.clear();
+
+    Applet::Initialize();
+
+    const auto keyboard_config_storage = broker.PopNormalDataToApplet();
+    ASSERT(keyboard_config_storage != nullptr);
+    const auto& keyboard_config = keyboard_config_storage->GetData();
+
+    if (keyboard_config.size() == SWKBD_INLINE_INIT_SIZE) {
+        is_inline = true;
+        return;
+    }
+
+    ASSERT(keyboard_config.size() >= sizeof(KeyboardConfig));
+    std::memcpy(&config, keyboard_config.data(), sizeof(KeyboardConfig));
+
+    const auto work_buffer_storage = broker.PopNormalDataToApplet();
+    ASSERT_OR_EXECUTE(work_buffer_storage != nullptr, { return; });
+    const auto& work_buffer = work_buffer_storage->GetData();
+
+    if (config.initial_string_size == 0)
+        return;
+
+    std::vector<char16_t> string(config.initial_string_size);
+    std::memcpy(string.data(), work_buffer.data() + config.initial_string_offset,
+                string.size() * 2);
+    initial_text = Common::UTF16StringFromFixedZeroTerminatedBuffer(string.data(), string.size());
+}
+
+bool SoftwareKeyboard::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode SoftwareKeyboard::GetStatus() const {
+    return RESULT_SUCCESS;
+}
+
+void SoftwareKeyboard::ExecuteInteractive() {
+    if (complete)
+        return;
+
+    const auto storage = broker.PopInteractiveDataToApplet();
+    ASSERT(storage != nullptr);
+    const auto data = storage->GetData();
+    if (!is_inline) {
+        const auto status = static_cast<bool>(data[0]);
+        if (status == INTERACTIVE_STATUS_OK) {
+            complete = true;
+        } else {
+            std::array<char16_t, SWKBD_OUTPUT_INTERACTIVE_BUFFER_SIZE / 2 - 2> string;
+            std::memcpy(string.data(), data.data() + 4, string.size() * 2);
+            frontend.SendTextCheckDialog(
+                Common::UTF16StringFromFixedZeroTerminatedBuffer(string.data(), string.size()),
+                [this] { broker.SignalStateChanged(); });
+        }
+    } else {
+        Request request{};
+        std::memcpy(&request, data.data(), sizeof(Request));
+
+        switch (request) {
+        case Request::Calc: {
+            broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::vector<u8>{1}));
+            broker.SignalStateChanged();
+            break;
+        }
+        default:
+            UNIMPLEMENTED_MSG("Request {:X} is not implemented", request);
+            break;
+        }
+    }
+}
+
+void SoftwareKeyboard::Execute() {
+    if (complete) {
+        broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(final_data)));
+        broker.SignalStateChanged();
+        return;
+    }
+
+    const auto parameters = ConvertToFrontendParameters(config, initial_text);
+    if (!is_inline) {
+        frontend.RequestText(
+            [this](std::optional<std::u16string> text) { WriteText(std::move(text)); }, parameters);
+    }
+}
+
+void SoftwareKeyboard::WriteText(std::optional<std::u16string> text) {
+    std::vector<u8> output_main(SWKBD_OUTPUT_BUFFER_SIZE);
+
+    if (text.has_value()) {
+        std::vector<u8> output_sub(SWKBD_OUTPUT_BUFFER_SIZE);
+
+        if (config.utf_8) {
+            const u64 size = text->size() + sizeof(u64);
+            const auto new_text = Common::UTF16ToUTF8(*text);
+
+            std::memcpy(output_sub.data(), &size, sizeof(u64));
+            std::memcpy(output_sub.data() + 8, new_text.data(),
+                        std::min(new_text.size(), SWKBD_OUTPUT_BUFFER_SIZE - 8));
+
+            output_main[0] = INTERACTIVE_STATUS_OK;
+            std::memcpy(output_main.data() + 4, new_text.data(),
+                        std::min(new_text.size(), SWKBD_OUTPUT_BUFFER_SIZE - 4));
+        } else {
+            const u64 size = text->size() * 2 + sizeof(u64);
+            std::memcpy(output_sub.data(), &size, sizeof(u64));
+            std::memcpy(output_sub.data() + 8, text->data(),
+                        std::min(text->size() * 2, SWKBD_OUTPUT_BUFFER_SIZE - 8));
+
+            output_main[0] = INTERACTIVE_STATUS_OK;
+            std::memcpy(output_main.data() + 4, text->data(),
+                        std::min(text->size() * 2, SWKBD_OUTPUT_BUFFER_SIZE - 4));
+        }
+
+        complete = !config.text_check;
+        final_data = output_main;
+
+        if (complete) {
+            broker.PushNormalDataFromApplet(
+                std::make_shared<IStorage>(system, std::move(output_main)));
+            broker.SignalStateChanged();
+        } else {
+            broker.PushInteractiveDataFromApplet(
+                std::make_shared<IStorage>(system, std::move(output_sub)));
+        }
+    } else {
+        output_main[0] = 1;
+        complete = true;
+        broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(output_main)));
+        broker.SignalStateChanged();
+    }
+}
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/software_keyboard.h

@@ -0,0 +1,86 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <string>
+#include <vector>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/swap.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/applets.h"
+
+union ResultCode;
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM::Applets {
+
+enum class KeysetDisable : u32 {
+    Space = 0x02,
+    Address = 0x04,
+    Percent = 0x08,
+    Slashes = 0x10,
+    Numbers = 0x40,
+    DownloadCode = 0x80,
+};
+
+struct KeyboardConfig {
+    INSERT_PADDING_BYTES(4);
+    std::array<char16_t, 9> submit_text;
+    u16_le left_symbol_key;
+    u16_le right_symbol_key;
+    INSERT_PADDING_BYTES(1);
+    KeysetDisable keyset_disable_bitmask;
+    u32_le initial_cursor_position;
+    std::array<char16_t, 65> header_text;
+    std::array<char16_t, 129> sub_text;
+    std::array<char16_t, 257> guide_text;
+    u32_le length_limit;
+    INSERT_PADDING_BYTES(4);
+    u32_le is_password;
+    INSERT_PADDING_BYTES(5);
+    bool utf_8;
+    bool draw_background;
+    u32_le initial_string_offset;
+    u32_le initial_string_size;
+    u32_le user_dictionary_offset;
+    u32_le user_dictionary_size;
+    bool text_check;
+    u64_le text_check_callback;
+};
+static_assert(sizeof(KeyboardConfig) == 0x3E0, "KeyboardConfig has incorrect size.");
+
+class SoftwareKeyboard final : public Applet {
+public:
+    explicit SoftwareKeyboard(Core::System& system_,
+                              const Core::Frontend::SoftwareKeyboardApplet& frontend_);
+    ~SoftwareKeyboard() override;
+
+    void Initialize() override;
+
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void WriteText(std::optional<std::u16string> text);
+
+private:
+    const Core::Frontend::SoftwareKeyboardApplet& frontend;
+
+    KeyboardConfig config;
+    std::u16string initial_text;
+    bool complete = false;
+    bool is_inline = false;
+    std::vector<u8> final_data;
+    Core::System& system;
+};
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/web_browser.cpp

@@ -0,0 +1,478 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/assert.h"
+#include "common/common_paths.h"
+#include "common/file_util.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/file_sys/content_archive.h"
+#include "core/file_sys/mode.h"
+#include "core/file_sys/nca_metadata.h"
+#include "core/file_sys/patch_manager.h"
+#include "core/file_sys/registered_cache.h"
+#include "core/file_sys/romfs.h"
+#include "core/file_sys/system_archive/system_archive.h"
+#include "core/file_sys/vfs_vector.h"
+#include "core/frontend/applets/web_browser.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/am.h"
+#include "core/hle/service/am/applets/web_browser.h"
+#include "core/hle/service/filesystem/filesystem.h"
+#include "core/hle/service/ns/pl_u.h"
+
+namespace Service::AM::Applets {
+
+namespace {
+
+template <typename T>
+void ParseRawValue(T& value, const std::vector<u8>& data) {
+    static_assert(std::is_trivially_copyable_v<T>,
+                  "It's undefined behavior to use memcpy with non-trivially copyable objects");
+    std::memcpy(&value, data.data(), data.size());
+}
+
+template <typename T>
+T ParseRawValue(const std::vector<u8>& data) {
+    T value;
+    ParseRawValue(value, data);
+    return value;
+}
+
+std::string ParseStringValue(const std::vector<u8>& data) {
+    return Common::StringFromFixedZeroTerminatedBuffer(reinterpret_cast<const char*>(data.data()),
+                                                       data.size());
+}
+
+std::string GetMainURL(const std::string& url) {
+    const auto index = url.find('?');
+
+    if (index == std::string::npos) {
+        return url;
+    }
+
+    return url.substr(0, index);
+}
+
+WebArgInputTLVMap ReadWebArgs(const std::vector<u8>& web_arg, WebArgHeader& web_arg_header) {
+    std::memcpy(&web_arg_header, web_arg.data(), sizeof(WebArgHeader));
+
+    if (web_arg.size() == sizeof(WebArgHeader)) {
+        return {};
+    }
+
+    WebArgInputTLVMap input_tlv_map;
+
+    u64 current_offset = sizeof(WebArgHeader);
+
+    for (std::size_t i = 0; i < web_arg_header.total_tlv_entries; ++i) {
+        if (web_arg.size() < current_offset + sizeof(WebArgInputTLV)) {
+            return input_tlv_map;
+        }
+
+        WebArgInputTLV input_tlv;
+        std::memcpy(&input_tlv, web_arg.data() + current_offset, sizeof(WebArgInputTLV));
+
+        current_offset += sizeof(WebArgInputTLV);
+
+        if (web_arg.size() < current_offset + input_tlv.arg_data_size) {
+            return input_tlv_map;
+        }
+
+        std::vector<u8> data(input_tlv.arg_data_size);
+        std::memcpy(data.data(), web_arg.data() + current_offset, input_tlv.arg_data_size);
+
+        current_offset += input_tlv.arg_data_size;
+
+        input_tlv_map.insert_or_assign(input_tlv.input_tlv_type, std::move(data));
+    }
+
+    return input_tlv_map;
+}
+
+FileSys::VirtualFile GetOfflineRomFS(Core::System& system, u64 title_id,
+                                     FileSys::ContentRecordType nca_type) {
+    if (nca_type == FileSys::ContentRecordType::Data) {
+        const auto nca =
+            system.GetFileSystemController().GetSystemNANDContents()->GetEntry(title_id, nca_type);
+
+        if (nca == nullptr) {
+            LOG_ERROR(Service_AM,
+                      "NCA of type={} with title_id={:016X} is not found in the System NAND!",
+                      nca_type, title_id);
+            return FileSys::SystemArchive::SynthesizeSystemArchive(title_id);
+        }
+
+        return nca->GetRomFS();
+    } else {
+        const auto nca = system.GetContentProvider().GetEntry(title_id, nca_type);
+
+        if (nca == nullptr) {
+            LOG_ERROR(Service_AM,
+                      "NCA of type={} with title_id={:016X} is not found in the ContentProvider!",
+                      nca_type, title_id);
+            return nullptr;
+        }
+
+        const FileSys::PatchManager pm{title_id, system.GetFileSystemController(),
+                                       system.GetContentProvider()};
+
+        return pm.PatchRomFS(nca->GetRomFS(), nca->GetBaseIVFCOffset(), nca_type);
+    }
+}
+
+void ExtractSharedFonts(Core::System& system) {
+    static constexpr std::array<const char*, 7> DECRYPTED_SHARED_FONTS{
+        "FontStandard.ttf",
+        "FontChineseSimplified.ttf",
+        "FontExtendedChineseSimplified.ttf",
+        "FontChineseTraditional.ttf",
+        "FontKorean.ttf",
+        "FontNintendoExtended.ttf",
+        "FontNintendoExtended2.ttf",
+    };
+
+    for (std::size_t i = 0; i < NS::SHARED_FONTS.size(); ++i) {
+        const auto fonts_dir = Common::FS::SanitizePath(
+            fmt::format("{}/fonts", Common::FS::GetUserPath(Common::FS::UserPath::CacheDir)),
+            Common::FS::DirectorySeparator::PlatformDefault);
+
+        const auto font_file_path =
+            Common::FS::SanitizePath(fmt::format("{}/{}", fonts_dir, DECRYPTED_SHARED_FONTS[i]),
+                                     Common::FS::DirectorySeparator::PlatformDefault);
+
+        if (Common::FS::Exists(font_file_path)) {
+            continue;
+        }
+
+        const auto font = NS::SHARED_FONTS[i];
+        const auto font_title_id = static_cast<u64>(font.first);
+
+        const auto nca = system.GetFileSystemController().GetSystemNANDContents()->GetEntry(
+            font_title_id, FileSys::ContentRecordType::Data);
+
+        FileSys::VirtualFile romfs;
+
+        if (!nca) {
+            romfs = FileSys::SystemArchive::SynthesizeSystemArchive(font_title_id);
+        } else {
+            romfs = nca->GetRomFS();
+        }
+
+        if (!romfs) {
+            LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} cannot be extracted!",
+                      font_title_id);
+            continue;
+        }
+
+        const auto extracted_romfs = FileSys::ExtractRomFS(romfs);
+
+        if (!extracted_romfs) {
+            LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} failed to extract!",
+                      font_title_id);
+            continue;
+        }
+
+        const auto font_file = extracted_romfs->GetFile(font.second);
+
+        if (!font_file) {
+            LOG_ERROR(Service_AM, "SharedFont RomFS with title_id={:016X} has no font file \"{}\"!",
+                      font_title_id, font.second);
+            continue;
+        }
+
+        std::vector<u32> font_data_u32(font_file->GetSize() / sizeof(u32));
+        font_file->ReadBytes<u32>(font_data_u32.data(), font_file->GetSize());
+
+        std::transform(font_data_u32.begin(), font_data_u32.end(), font_data_u32.begin(),
+                       Common::swap32);
+
+        std::vector<u8> decrypted_data(font_file->GetSize() - 8);
+
+        NS::DecryptSharedFontToTTF(font_data_u32, decrypted_data);
+
+        FileSys::VirtualFile decrypted_font = std::make_shared<FileSys::VectorVfsFile>(
+            std::move(decrypted_data), DECRYPTED_SHARED_FONTS[i]);
+
+        const auto temp_dir =
+            system.GetFilesystem()->CreateDirectory(fonts_dir, FileSys::Mode::ReadWrite);
+
+        const auto out_file = temp_dir->CreateFile(DECRYPTED_SHARED_FONTS[i]);
+
+        FileSys::VfsRawCopy(decrypted_font, out_file);
+    }
+}
+
+} // namespace
+
+WebBrowser::WebBrowser(Core::System& system_, const Core::Frontend::WebBrowserApplet& frontend_)
+    : Applet{system_.Kernel()}, frontend(frontend_), system{system_} {}
+
+WebBrowser::~WebBrowser() = default;
+
+void WebBrowser::Initialize() {
+    Applet::Initialize();
+
+    LOG_INFO(Service_AM, "Initializing Web Browser Applet.");
+
+    LOG_DEBUG(Service_AM,
+              "Initializing Applet with common_args: arg_version={}, lib_version={}, "
+              "play_startup_sound={}, size={}, system_tick={}, theme_color={}",
+              common_args.arguments_version, common_args.library_version,
+              common_args.play_startup_sound, common_args.size, common_args.system_tick,
+              common_args.theme_color);
+
+    web_applet_version = WebAppletVersion{common_args.library_version};
+
+    const auto web_arg_storage = broker.PopNormalDataToApplet();
+    ASSERT(web_arg_storage != nullptr);
+
+    const auto& web_arg = web_arg_storage->GetData();
+    ASSERT_OR_EXECUTE(web_arg.size() >= sizeof(WebArgHeader), { return; });
+
+    web_arg_input_tlv_map = ReadWebArgs(web_arg, web_arg_header);
+
+    LOG_DEBUG(Service_AM, "WebArgHeader: total_tlv_entries={}, shim_kind={}",
+              web_arg_header.total_tlv_entries, web_arg_header.shim_kind);
+
+    ExtractSharedFonts(system);
+
+    switch (web_arg_header.shim_kind) {
+    case ShimKind::Shop:
+        InitializeShop();
+        break;
+    case ShimKind::Login:
+        InitializeLogin();
+        break;
+    case ShimKind::Offline:
+        InitializeOffline();
+        break;
+    case ShimKind::Share:
+        InitializeShare();
+        break;
+    case ShimKind::Web:
+        InitializeWeb();
+        break;
+    case ShimKind::Wifi:
+        InitializeWifi();
+        break;
+    case ShimKind::Lobby:
+        InitializeLobby();
+        break;
+    default:
+        UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
+        break;
+    }
+}
+
+bool WebBrowser::TransactionComplete() const {
+    return complete;
+}
+
+ResultCode WebBrowser::GetStatus() const {
+    return status;
+}
+
+void WebBrowser::ExecuteInteractive() {
+    UNIMPLEMENTED_MSG("WebSession is not implemented");
+}
+
+void WebBrowser::Execute() {
+    switch (web_arg_header.shim_kind) {
+    case ShimKind::Shop:
+        ExecuteShop();
+        break;
+    case ShimKind::Login:
+        ExecuteLogin();
+        break;
+    case ShimKind::Offline:
+        ExecuteOffline();
+        break;
+    case ShimKind::Share:
+        ExecuteShare();
+        break;
+    case ShimKind::Web:
+        ExecuteWeb();
+        break;
+    case ShimKind::Wifi:
+        ExecuteWifi();
+        break;
+    case ShimKind::Lobby:
+        ExecuteLobby();
+        break;
+    default:
+        UNREACHABLE_MSG("Invalid ShimKind={}", web_arg_header.shim_kind);
+        WebBrowserExit(WebExitReason::EndButtonPressed);
+        break;
+    }
+}
+
+void WebBrowser::ExtractOfflineRomFS() {
+    LOG_DEBUG(Service_AM, "Extracting RomFS to {}", offline_cache_dir);
+
+    const auto extracted_romfs_dir =
+        FileSys::ExtractRomFS(offline_romfs, FileSys::RomFSExtractionType::SingleDiscard);
+
+    const auto temp_dir =
+        system.GetFilesystem()->CreateDirectory(offline_cache_dir, FileSys::Mode::ReadWrite);
+
+    FileSys::VfsRawCopyD(extracted_romfs_dir, temp_dir);
+}
+
+void WebBrowser::WebBrowserExit(WebExitReason exit_reason, std::string last_url) {
+    if ((web_arg_header.shim_kind == ShimKind::Share &&
+         web_applet_version >= WebAppletVersion::Version196608) ||
+        (web_arg_header.shim_kind == ShimKind::Web &&
+         web_applet_version >= WebAppletVersion::Version524288)) {
+        // TODO: Push Output TLVs instead of a WebCommonReturnValue
+    }
+
+    WebCommonReturnValue web_common_return_value;
+
+    web_common_return_value.exit_reason = exit_reason;
+    std::memcpy(&web_common_return_value.last_url, last_url.data(), last_url.size());
+    web_common_return_value.last_url_size = last_url.size();
+
+    LOG_DEBUG(Service_AM, "WebCommonReturnValue: exit_reason={}, last_url={}, last_url_size={}",
+              exit_reason, last_url, last_url.size());
+
+    complete = true;
+    std::vector<u8> out_data(sizeof(WebCommonReturnValue));
+    std::memcpy(out_data.data(), &web_common_return_value, out_data.size());
+    broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::move(out_data)));
+    broker.SignalStateChanged();
+}
+
+bool WebBrowser::InputTLVExistsInMap(WebArgInputTLVType input_tlv_type) const {
+    return web_arg_input_tlv_map.find(input_tlv_type) != web_arg_input_tlv_map.end();
+}
+
+std::optional<std::vector<u8>> WebBrowser::GetInputTLVData(WebArgInputTLVType input_tlv_type) {
+    const auto map_it = web_arg_input_tlv_map.find(input_tlv_type);
+
+    if (map_it == web_arg_input_tlv_map.end()) {
+        return std::nullopt;
+    }
+
+    return map_it->second;
+}
+
+void WebBrowser::InitializeShop() {}
+
+void WebBrowser::InitializeLogin() {}
+
+void WebBrowser::InitializeOffline() {
+    const auto document_path =
+        ParseStringValue(GetInputTLVData(WebArgInputTLVType::DocumentPath).value());
+
+    const auto document_kind =
+        ParseRawValue<DocumentKind>(GetInputTLVData(WebArgInputTLVType::DocumentKind).value());
+
+    std::string additional_paths;
+
+    switch (document_kind) {
+    case DocumentKind::OfflineHtmlPage:
+    default:
+        title_id = system.CurrentProcess()->GetTitleID();
+        nca_type = FileSys::ContentRecordType::HtmlDocument;
+        additional_paths = "html-document";
+        break;
+    case DocumentKind::ApplicationLegalInformation:
+        title_id = ParseRawValue<u64>(GetInputTLVData(WebArgInputTLVType::ApplicationID).value());
+        nca_type = FileSys::ContentRecordType::LegalInformation;
+        break;
+    case DocumentKind::SystemDataPage:
+        title_id = ParseRawValue<u64>(GetInputTLVData(WebArgInputTLVType::SystemDataID).value());
+        nca_type = FileSys::ContentRecordType::Data;
+        break;
+    }
+
+    static constexpr std::array<const char*, 3> RESOURCE_TYPES{
+        "manual",
+        "legal_information",
+        "system_data",
+    };
+
+    offline_cache_dir = Common::FS::SanitizePath(
+        fmt::format("{}/offline_web_applet_{}/{:016X}",
+                    Common::FS::GetUserPath(Common::FS::UserPath::CacheDir),
+                    RESOURCE_TYPES[static_cast<u32>(document_kind) - 1], title_id),
+        Common::FS::DirectorySeparator::PlatformDefault);
+
+    offline_document = Common::FS::SanitizePath(
+        fmt::format("{}/{}/{}", offline_cache_dir, additional_paths, document_path),
+        Common::FS::DirectorySeparator::PlatformDefault);
+}
+
+void WebBrowser::InitializeShare() {}
+
+void WebBrowser::InitializeWeb() {
+    external_url = ParseStringValue(GetInputTLVData(WebArgInputTLVType::InitialURL).value());
+}
+
+void WebBrowser::InitializeWifi() {}
+
+void WebBrowser::InitializeLobby() {}
+
+void WebBrowser::ExecuteShop() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Shop Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
+}
+
+void WebBrowser::ExecuteLogin() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Login Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
+}
+
+void WebBrowser::ExecuteOffline() {
+    const auto main_url = Common::FS::SanitizePath(GetMainURL(offline_document),
+                                                   Common::FS::DirectorySeparator::PlatformDefault);
+
+    if (!Common::FS::Exists(main_url)) {
+        offline_romfs = GetOfflineRomFS(system, title_id, nca_type);
+
+        if (offline_romfs == nullptr) {
+            LOG_ERROR(Service_AM,
+                      "RomFS with title_id={:016X} and nca_type={} cannot be extracted!", title_id,
+                      nca_type);
+            WebBrowserExit(WebExitReason::WindowClosed);
+            return;
+        }
+    }
+
+    LOG_INFO(Service_AM, "Opening offline document at {}", offline_document);
+
+    frontend.OpenLocalWebPage(
+        offline_document, [this] { ExtractOfflineRomFS(); },
+        [this](WebExitReason exit_reason, std::string last_url) {
+            WebBrowserExit(exit_reason, last_url);
+        });
+}
+
+void WebBrowser::ExecuteShare() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Share Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
+}
+
+void WebBrowser::ExecuteWeb() {
+    LOG_INFO(Service_AM, "Opening external URL at {}", external_url);
+
+    frontend.OpenExternalWebPage(external_url,
+                                 [this](WebExitReason exit_reason, std::string last_url) {
+                                     WebBrowserExit(exit_reason, last_url);
+                                 });
+}
+
+void WebBrowser::ExecuteWifi() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Wifi Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
+}
+
+void WebBrowser::ExecuteLobby() {
+    LOG_WARNING(Service_AM, "(STUBBED) called, Lobby Applet is not implemented");
+    WebBrowserExit(WebExitReason::EndButtonPressed);
+}
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/web_browser.h

@@ -0,0 +1,87 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <optional>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "core/file_sys/vfs_types.h"
+#include "core/hle/result.h"
+#include "core/hle/service/am/applets/applets.h"
+#include "core/hle/service/am/applets/web_types.h"
+
+namespace Core {
+class System;
+}
+
+namespace FileSys {
+enum class ContentRecordType : u8;
+}
+
+namespace Service::AM::Applets {
+
+class WebBrowser final : public Applet {
+public:
+    WebBrowser(Core::System& system_, const Core::Frontend::WebBrowserApplet& frontend_);
+
+    ~WebBrowser() override;
+
+    void Initialize() override;
+
+    bool TransactionComplete() const override;
+    ResultCode GetStatus() const override;
+    void ExecuteInteractive() override;
+    void Execute() override;
+
+    void ExtractOfflineRomFS();
+
+    void WebBrowserExit(WebExitReason exit_reason, std::string last_url = "");
+
+private:
+    bool InputTLVExistsInMap(WebArgInputTLVType input_tlv_type) const;
+
+    std::optional<std::vector<u8>> GetInputTLVData(WebArgInputTLVType input_tlv_type);
+
+    // Initializers for the various types of browser applets
+    void InitializeShop();
+    void InitializeLogin();
+    void InitializeOffline();
+    void InitializeShare();
+    void InitializeWeb();
+    void InitializeWifi();
+    void InitializeLobby();
+
+    // Executors for the various types of browser applets
+    void ExecuteShop();
+    void ExecuteLogin();
+    void ExecuteOffline();
+    void ExecuteShare();
+    void ExecuteWeb();
+    void ExecuteWifi();
+    void ExecuteLobby();
+
+    const Core::Frontend::WebBrowserApplet& frontend;
+
+    bool complete{false};
+    ResultCode status{RESULT_SUCCESS};
+
+    WebAppletVersion web_applet_version;
+    WebExitReason web_exit_reason;
+    WebArgHeader web_arg_header;
+    WebArgInputTLVMap web_arg_input_tlv_map;
+
+    u64 title_id;
+    FileSys::ContentRecordType nca_type;
+    std::string offline_cache_dir;
+    std::string offline_document;
+    FileSys::VirtualFile offline_romfs;
+
+    std::string external_url;
+
+    Core::System& system;
+};
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/applets/web_types.h

@@ -0,0 +1,178 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <unordered_map>
+#include <vector>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/swap.h"
+
+namespace Service::AM::Applets {
+
+enum class WebAppletVersion : u32_le {
+    Version0 = 0x0,          // Only used by WifiWebAuthApplet
+    Version131072 = 0x20000, // 1.0.0 - 2.3.0
+    Version196608 = 0x30000, // 3.0.0 - 4.1.0
+    Version327680 = 0x50000, // 5.0.0 - 5.1.0
+    Version393216 = 0x60000, // 6.0.0 - 7.0.1
+    Version524288 = 0x80000, // 8.0.0+
+};
+
+enum class ShimKind : u32 {
+    Shop = 1,
+    Login = 2,
+    Offline = 3,
+    Share = 4,
+    Web = 5,
+    Wifi = 6,
+    Lobby = 7,
+};
+
+enum class WebExitReason : u32 {
+    EndButtonPressed = 0,
+    BackButtonPressed = 1,
+    ExitRequested = 2,
+    CallbackURL = 3,
+    WindowClosed = 4,
+    ErrorDialog = 7,
+};
+
+enum class WebArgInputTLVType : u16 {
+    InitialURL = 0x1,
+    CallbackURL = 0x3,
+    CallbackableURL = 0x4,
+    ApplicationID = 0x5,
+    DocumentPath = 0x6,
+    DocumentKind = 0x7,
+    SystemDataID = 0x8,
+    ShareStartPage = 0x9,
+    Whitelist = 0xA,
+    News = 0xB,
+    UserID = 0xE,
+    AlbumEntry0 = 0xF,
+    ScreenShotEnabled = 0x10,
+    EcClientCertEnabled = 0x11,
+    PlayReportEnabled = 0x13,
+    BootDisplayKind = 0x17,
+    BackgroundKind = 0x18,
+    FooterEnabled = 0x19,
+    PointerEnabled = 0x1A,
+    LeftStickMode = 0x1B,
+    KeyRepeatFrame1 = 0x1C,
+    KeyRepeatFrame2 = 0x1D,
+    BootAsMediaPlayerInverted = 0x1E,
+    DisplayURLKind = 0x1F,
+    BootAsMediaPlayer = 0x21,
+    ShopJumpEnabled = 0x22,
+    MediaAutoPlayEnabled = 0x23,
+    LobbyParameter = 0x24,
+    ApplicationAlbumEntry = 0x26,
+    JsExtensionEnabled = 0x27,
+    AdditionalCommentText = 0x28,
+    TouchEnabledOnContents = 0x29,
+    UserAgentAdditionalString = 0x2A,
+    AdditionalMediaData0 = 0x2B,
+    MediaPlayerAutoCloseEnabled = 0x2C,
+    PageCacheEnabled = 0x2D,
+    WebAudioEnabled = 0x2E,
+    YouTubeVideoWhitelist = 0x31,
+    FooterFixedKind = 0x32,
+    PageFadeEnabled = 0x33,
+    MediaCreatorApplicationRatingAge = 0x34,
+    BootLoadingIconEnabled = 0x35,
+    PageScrollIndicatorEnabled = 0x36,
+    MediaPlayerSpeedControlEnabled = 0x37,
+    AlbumEntry1 = 0x38,
+    AlbumEntry2 = 0x39,
+    AlbumEntry3 = 0x3A,
+    AdditionalMediaData1 = 0x3B,
+    AdditionalMediaData2 = 0x3C,
+    AdditionalMediaData3 = 0x3D,
+    BootFooterButton = 0x3E,
+    OverrideWebAudioVolume = 0x3F,
+    OverrideMediaAudioVolume = 0x40,
+    BootMode = 0x41,
+    WebSessionEnabled = 0x42,
+    MediaPlayerOfflineEnabled = 0x43,
+};
+
+enum class WebArgOutputTLVType : u16 {
+    ShareExitReason = 0x1,
+    LastURL = 0x2,
+    LastURLSize = 0x3,
+    SharePostResult = 0x4,
+    PostServiceName = 0x5,
+    PostServiceNameSize = 0x6,
+    PostID = 0x7,
+    PostIDSize = 0x8,
+    MediaPlayerAutoClosedByCompletion = 0x9,
+};
+
+enum class DocumentKind : u32 {
+    OfflineHtmlPage = 1,
+    ApplicationLegalInformation = 2,
+    SystemDataPage = 3,
+};
+
+enum class ShareStartPage : u32 {
+    Default,
+    Settings,
+};
+
+enum class BootDisplayKind : u32 {
+    Default,
+    White,
+    Black,
+};
+
+enum class BackgroundKind : u32 {
+    Default,
+};
+
+enum class LeftStickMode : u32 {
+    Pointer,
+    Cursor,
+};
+
+enum class WebSessionBootMode : u32 {
+    AllForeground,
+    AllForegroundInitiallyHidden,
+};
+
+struct WebArgHeader {
+    u16 total_tlv_entries{};
+    INSERT_PADDING_BYTES(2);
+    ShimKind shim_kind{};
+};
+static_assert(sizeof(WebArgHeader) == 0x8, "WebArgHeader has incorrect size.");
+
+struct WebArgInputTLV {
+    WebArgInputTLVType input_tlv_type{};
+    u16 arg_data_size{};
+    INSERT_PADDING_WORDS(1);
+};
+static_assert(sizeof(WebArgInputTLV) == 0x8, "WebArgInputTLV has incorrect size.");
+
+struct WebArgOutputTLV {
+    WebArgOutputTLVType output_tlv_type{};
+    u16 arg_data_size{};
+    INSERT_PADDING_WORDS(1);
+};
+static_assert(sizeof(WebArgOutputTLV) == 0x8, "WebArgOutputTLV has incorrect size.");
+
+struct WebCommonReturnValue {
+    WebExitReason exit_reason{};
+    INSERT_PADDING_WORDS(1);
+    std::array<char, 0x1000> last_url{};
+    u64 last_url_size{};
+};
+static_assert(sizeof(WebCommonReturnValue) == 0x1010, "WebCommonReturnValue has incorrect size.");
+
+using WebArgInputTLVMap = std::unordered_map<WebArgInputTLVType, std::vector<u8>>;
+
+} // namespace Service::AM::Applets

src/core/hle/service/am/idle.cpp

@@ -0,0 +1,26 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/am/idle.h"
+
+namespace Service::AM {
+
+IdleSys::IdleSys(Core::System& system_) : ServiceFramework{system_, "idle:sys"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "GetAutoPowerDownEvent"},
+        {1, nullptr, "IsAutoPowerDownRequested"},
+        {2, nullptr, "Unknown2"},
+        {3, nullptr, "SetHandlingContext"},
+        {4, nullptr, "LoadAndApplySettings"},
+        {5, nullptr, "ReportUserIsActive"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+IdleSys::~IdleSys() = default;
+
+} // namespace Service::AM

src/core/hle/service/am/idle.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM {
+
+class IdleSys final : public ServiceFramework<IdleSys> {
+public:
+    explicit IdleSys(Core::System& system_);
+    ~IdleSys() override;
+};
+
+} // namespace Service::AM

src/core/hle/service/am/omm.cpp

@@ -0,0 +1,48 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/am/omm.h"
+
+namespace Service::AM {
+
+OMM::OMM(Core::System& system_) : ServiceFramework{system_, "omm"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "GetOperationMode"},
+        {1, nullptr, "GetOperationModeChangeEvent"},
+        {2, nullptr, "EnableAudioVisual"},
+        {3, nullptr, "DisableAudioVisual"},
+        {4, nullptr, "EnterSleepAndWait"},
+        {5, nullptr, "GetCradleStatus"},
+        {6, nullptr, "FadeInDisplay"},
+        {7, nullptr, "FadeOutDisplay"},
+        {8, nullptr, "GetCradleFwVersion"},
+        {9, nullptr, "NotifyCecSettingsChanged"},
+        {10, nullptr, "SetOperationModePolicy"},
+        {11, nullptr, "GetDefaultDisplayResolution"},
+        {12, nullptr, "GetDefaultDisplayResolutionChangeEvent"},
+        {13, nullptr, "UpdateDefaultDisplayResolution"},
+        {14, nullptr, "ShouldSleepOnBoot"},
+        {15, nullptr, "NotifyHdcpApplicationExecutionStarted"},
+        {16, nullptr, "NotifyHdcpApplicationExecutionFinished"},
+        {17, nullptr, "NotifyHdcpApplicationDrawingStarted"},
+        {18, nullptr, "NotifyHdcpApplicationDrawingFinished"},
+        {19, nullptr, "GetHdcpAuthenticationFailedEvent"},
+        {20, nullptr, "GetHdcpAuthenticationFailedEmulationEnabled"},
+        {21, nullptr, "SetHdcpAuthenticationFailedEmulation"},
+        {22, nullptr, "GetHdcpStateChangeEvent"},
+        {23, nullptr, "GetHdcpState"},
+        {24, nullptr, "ShowCardUpdateProcessing"},
+        {25, nullptr, "SetApplicationCecSettingsAndNotifyChanged"},
+        {26, nullptr, "GetOperationModeSystemInfo"},
+        {27, nullptr, "GetAppletFullAwakingSystemEvent"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+OMM::~OMM() = default;
+
+} // namespace Service::AM

src/core/hle/service/am/omm.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM {
+
+class OMM final : public ServiceFramework<OMM> {
+public:
+    explicit OMM(Core::System& system_);
+    ~OMM() override;
+};
+
+} // namespace Service::AM

src/core/hle/service/am/spsm.cpp

@@ -0,0 +1,32 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/am/spsm.h"
+
+namespace Service::AM {
+
+SPSM::SPSM(Core::System& system_) : ServiceFramework{system_, "spsm"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "GetState"},
+        {1, nullptr, "EnterSleep"},
+        {2, nullptr, "GetLastWakeReason"},
+        {3, nullptr, "Shutdown"},
+        {4, nullptr, "GetNotificationMessageEventHandle"},
+        {5, nullptr, "ReceiveNotificationMessage"},
+        {6, nullptr, "AnalyzeLogForLastSleepWakeSequence"},
+        {7, nullptr, "ResetEventLog"},
+        {8, nullptr, "AnalyzePerformanceLogForLastSleepWakeSequence"},
+        {9, nullptr, "ChangeHomeButtonLongPressingTime"},
+        {10, nullptr, "PutErrorState"},
+        {11, nullptr, "InvalidateCurrentHomeButtonPressing"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+SPSM::~SPSM() = default;
+
+} // namespace Service::AM

src/core/hle/service/am/spsm.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM {
+
+class SPSM final : public ServiceFramework<SPSM> {
+public:
+    explicit SPSM(Core::System& system_);
+    ~SPSM() override;
+};
+
+} // namespace Service::AM

src/core/hle/service/am/tcap.cpp

@@ -0,0 +1,23 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/am/tcap.h"
+
+namespace Service::AM {
+
+TCAP::TCAP(Core::System& system_) : ServiceFramework{system_, "tcap"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "GetContinuousHighSkinTemperatureEvent"},
+        {1, nullptr, "SetOperationMode"},
+        {2, nullptr, "LoadAndApplySettings"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+TCAP::~TCAP() = default;
+
+} // namespace Service::AM

src/core/hle/service/am/tcap.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::AM {
+
+class TCAP final : public ServiceFramework<TCAP> {
+public:
+    explicit TCAP(Core::System& system_);
+    ~TCAP() override;
+};
+
+} // namespace Service::AM

src/core/hle/service/aoc/aoc_u.cpp

@@ -0,0 +1,278 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <numeric>
+#include <vector>
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/file_sys/common_funcs.h"
+#include "core/file_sys/content_archive.h"
+#include "core/file_sys/control_metadata.h"
+#include "core/file_sys/nca_metadata.h"
+#include "core/file_sys/patch_manager.h"
+#include "core/file_sys/registered_cache.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/aoc/aoc_u.h"
+#include "core/loader/loader.h"
+#include "core/settings.h"
+
+namespace Service::AOC {
+
+static bool CheckAOCTitleIDMatchesBase(u64 title_id, u64 base) {
+    return FileSys::GetBaseTitleID(title_id) == base;
+}
+
+static std::vector<u64> AccumulateAOCTitleIDs(Core::System& system) {
+    std::vector<u64> add_on_content;
+    const auto& rcu = system.GetContentProvider();
+    const auto list =
+        rcu.ListEntriesFilter(FileSys::TitleType::AOC, FileSys::ContentRecordType::Data);
+    std::transform(list.begin(), list.end(), std::back_inserter(add_on_content),
+                   [](const FileSys::ContentProviderEntry& rce) { return rce.title_id; });
+    add_on_content.erase(
+        std::remove_if(
+            add_on_content.begin(), add_on_content.end(),
+            [&rcu](u64 tid) {
+                return rcu.GetEntry(tid, FileSys::ContentRecordType::Data)->GetStatus() !=
+                       Loader::ResultStatus::Success;
+            }),
+        add_on_content.end());
+    return add_on_content;
+}
+
+class IPurchaseEventManager final : public ServiceFramework<IPurchaseEventManager> {
+public:
+    explicit IPurchaseEventManager(Core::System& system_)
+        : ServiceFramework{system_, "IPurchaseEventManager"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IPurchaseEventManager::SetDefaultDeliveryTarget, "SetDefaultDeliveryTarget"},
+            {1, &IPurchaseEventManager::SetDeliveryTarget, "SetDeliveryTarget"},
+            {2, &IPurchaseEventManager::GetPurchasedEventReadableHandle, "GetPurchasedEventReadableHandle"},
+            {3, nullptr, "PopPurchasedProductInfo"},
+            {4, nullptr, "PopPurchasedProductInfoWithUid"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+
+        purchased_event = Kernel::WritableEvent::CreateEventPair(
+            system.Kernel(), "IPurchaseEventManager:PurchasedEvent");
+    }
+
+private:
+    void SetDefaultDeliveryTarget(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+
+        const auto unknown_1 = rp.Pop<u64>();
+        [[maybe_unused]] const auto unknown_2 = ctx.ReadBuffer();
+
+        LOG_WARNING(Service_AOC, "(STUBBED) called, unknown_1={}", unknown_1);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void SetDeliveryTarget(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+
+        const auto unknown_1 = rp.Pop<u64>();
+        [[maybe_unused]] const auto unknown_2 = ctx.ReadBuffer();
+
+        LOG_WARNING(Service_AOC, "(STUBBED) called, unknown_1={}", unknown_1);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetPurchasedEventReadableHandle(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_AOC, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(purchased_event.readable);
+    }
+
+    Kernel::EventPair purchased_event;
+};
+
+AOC_U::AOC_U(Core::System& system_)
+    : ServiceFramework{system_, "aoc:u"}, add_on_content{AccumulateAOCTitleIDs(system)} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "CountAddOnContentByApplicationId"},
+        {1, nullptr, "ListAddOnContentByApplicationId"},
+        {2, &AOC_U::CountAddOnContent, "CountAddOnContent"},
+        {3, &AOC_U::ListAddOnContent, "ListAddOnContent"},
+        {4, nullptr, "GetAddOnContentBaseIdByApplicationId"},
+        {5, &AOC_U::GetAddOnContentBaseId, "GetAddOnContentBaseId"},
+        {6, nullptr, "PrepareAddOnContentByApplicationId"},
+        {7, &AOC_U::PrepareAddOnContent, "PrepareAddOnContent"},
+        {8, &AOC_U::GetAddOnContentListChangedEvent, "GetAddOnContentListChangedEvent"},
+        {9, nullptr, "GetAddOnContentLostErrorCode"},
+        {100, &AOC_U::CreateEcPurchasedEventManager, "CreateEcPurchasedEventManager"},
+        {101, &AOC_U::CreatePermanentEcPurchasedEventManager, "CreatePermanentEcPurchasedEventManager"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+
+    auto& kernel = system.Kernel();
+    aoc_change_event =
+        Kernel::WritableEvent::CreateEventPair(kernel, "GetAddOnContentListChanged:Event");
+}
+
+AOC_U::~AOC_U() = default;
+
+void AOC_U::CountAddOnContent(Kernel::HLERequestContext& ctx) {
+    struct Parameters {
+        u64 process_id;
+    };
+    static_assert(sizeof(Parameters) == 8);
+
+    IPC::RequestParser rp{ctx};
+    const auto params = rp.PopRaw<Parameters>();
+
+    LOG_DEBUG(Service_AOC, "called. process_id={}", params.process_id);
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+
+    const auto current = system.CurrentProcess()->GetTitleID();
+
+    const auto& disabled = Settings::values.disabled_addons[current];
+    if (std::find(disabled.begin(), disabled.end(), "DLC") != disabled.end()) {
+        rb.Push<u32>(0);
+        return;
+    }
+
+    rb.Push<u32>(static_cast<u32>(
+        std::count_if(add_on_content.begin(), add_on_content.end(),
+                      [current](u64 tid) { return CheckAOCTitleIDMatchesBase(tid, current); })));
+}
+
+void AOC_U::ListAddOnContent(Kernel::HLERequestContext& ctx) {
+    struct Parameters {
+        u32 offset;
+        u32 count;
+        u64 process_id;
+    };
+    static_assert(sizeof(Parameters) == 16);
+
+    IPC::RequestParser rp{ctx};
+    const auto [offset, count, process_id] = rp.PopRaw<Parameters>();
+
+    LOG_DEBUG(Service_AOC, "called with offset={}, count={}, process_id={}", offset, count,
+              process_id);
+
+    const auto current = system.CurrentProcess()->GetTitleID();
+
+    std::vector<u32> out;
+    const auto& disabled = Settings::values.disabled_addons[current];
+    if (std::find(disabled.begin(), disabled.end(), "DLC") == disabled.end()) {
+        for (u64 content_id : add_on_content) {
+            if (FileSys::GetBaseTitleID(content_id) != current) {
+                continue;
+            }
+
+            out.push_back(static_cast<u32>(FileSys::GetAOCID(content_id)));
+        }
+    }
+
+    if (out.size() < offset) {
+        IPC::ResponseBuilder rb{ctx, 2};
+        // TODO(DarkLordZach): Find the correct error code.
+        rb.Push(RESULT_UNKNOWN);
+        return;
+    }
+
+    const auto out_count = static_cast<u32>(std::min<size_t>(out.size() - offset, count));
+    std::rotate(out.begin(), out.begin() + offset, out.end());
+    out.resize(out_count);
+
+    ctx.WriteBuffer(out);
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(out_count);
+}
+
+void AOC_U::GetAddOnContentBaseId(Kernel::HLERequestContext& ctx) {
+    struct Parameters {
+        u64 process_id;
+    };
+    static_assert(sizeof(Parameters) == 8);
+
+    IPC::RequestParser rp{ctx};
+    const auto params = rp.PopRaw<Parameters>();
+
+    LOG_DEBUG(Service_AOC, "called. process_id={}", params.process_id);
+
+    IPC::ResponseBuilder rb{ctx, 4};
+    rb.Push(RESULT_SUCCESS);
+
+    const auto title_id = system.CurrentProcess()->GetTitleID();
+    const FileSys::PatchManager pm{title_id, system.GetFileSystemController(),
+                                   system.GetContentProvider()};
+
+    const auto res = pm.GetControlMetadata();
+    if (res.first == nullptr) {
+        rb.Push(FileSys::GetAOCBaseTitleID(title_id));
+        return;
+    }
+
+    rb.Push(res.first->GetDLCBaseTitleId());
+}
+
+void AOC_U::PrepareAddOnContent(Kernel::HLERequestContext& ctx) {
+    struct Parameters {
+        s32 addon_index;
+        u64 process_id;
+    };
+    static_assert(sizeof(Parameters) == 16);
+
+    IPC::RequestParser rp{ctx};
+    const auto [addon_index, process_id] = rp.PopRaw<Parameters>();
+
+    LOG_WARNING(Service_AOC, "(STUBBED) called with addon_index={}, process_id={}", addon_index,
+                process_id);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+void AOC_U::GetAddOnContentListChangedEvent(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_AOC, "(STUBBED) called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushCopyObjects(aoc_change_event.readable);
+}
+
+void AOC_U::CreateEcPurchasedEventManager(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_AOC, "(STUBBED) called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IPurchaseEventManager>(system);
+}
+
+void AOC_U::CreatePermanentEcPurchasedEventManager(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_AOC, "(STUBBED) called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IPurchaseEventManager>(system);
+}
+
+void InstallInterfaces(SM::ServiceManager& service_manager, Core::System& system) {
+    std::make_shared<AOC_U>(system)->InstallAsService(service_manager);
+}
+
+} // namespace Service::AOC

src/core/hle/service/aoc/aoc_u.h

@@ -0,0 +1,40 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class WritableEvent;
+}
+
+namespace Service::AOC {
+
+class AOC_U final : public ServiceFramework<AOC_U> {
+public:
+    explicit AOC_U(Core::System& system);
+    ~AOC_U() override;
+
+private:
+    void CountAddOnContent(Kernel::HLERequestContext& ctx);
+    void ListAddOnContent(Kernel::HLERequestContext& ctx);
+    void GetAddOnContentBaseId(Kernel::HLERequestContext& ctx);
+    void PrepareAddOnContent(Kernel::HLERequestContext& ctx);
+    void GetAddOnContentListChangedEvent(Kernel::HLERequestContext& ctx);
+    void CreateEcPurchasedEventManager(Kernel::HLERequestContext& ctx);
+    void CreatePermanentEcPurchasedEventManager(Kernel::HLERequestContext& ctx);
+
+    std::vector<u64> add_on_content;
+    Kernel::EventPair aoc_change_event;
+};
+
+/// Registers all AOC services with the specified service manager.
+void InstallInterfaces(SM::ServiceManager& service_manager, Core::System& system);
+
+} // namespace Service::AOC

src/core/hle/service/apm/apm.cpp

@@ -0,0 +1,27 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/core.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/apm/apm.h"
+#include "core/hle/service/apm/interface.h"
+
+namespace Service::APM {
+
+Module::Module() = default;
+Module::~Module() = default;
+
+void InstallInterfaces(Core::System& system) {
+    auto module_ = std::make_shared<Module>();
+    std::make_shared<APM>(system, module_, system.GetAPMController(), "apm")
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<APM>(system, module_, system.GetAPMController(), "apm:p")
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<APM>(system, module_, system.GetAPMController(), "apm:am")
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<APM_Sys>(system, system.GetAPMController())
+        ->InstallAsService(system.ServiceManager());
+}
+
+} // namespace Service::APM

src/core/hle/service/apm/apm.h

@@ -0,0 +1,22 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Core {
+class System;
+}
+
+namespace Service::APM {
+
+class Module final {
+public:
+    Module();
+    ~Module();
+};
+
+/// Registers all AM services with the specified service manager.
+void InstallInterfaces(Core::System& system);
+
+} // namespace Service::APM

src/core/hle/service/apm/controller.cpp

@@ -0,0 +1,89 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <array>
+#include <utility>
+
+#include "common/logging/log.h"
+#include "core/core_timing.h"
+#include "core/hle/service/apm/controller.h"
+#include "core/settings.h"
+
+namespace Service::APM {
+
+constexpr auto DEFAULT_PERFORMANCE_CONFIGURATION = PerformanceConfiguration::Config7;
+
+Controller::Controller(Core::Timing::CoreTiming& core_timing)
+    : core_timing{core_timing}, configs{
+                                    {PerformanceMode::Handheld, DEFAULT_PERFORMANCE_CONFIGURATION},
+                                    {PerformanceMode::Docked, DEFAULT_PERFORMANCE_CONFIGURATION},
+                                } {}
+
+Controller::~Controller() = default;
+
+void Controller::SetPerformanceConfiguration(PerformanceMode mode,
+                                             PerformanceConfiguration config) {
+    static constexpr std::array<std::pair<PerformanceConfiguration, u32>, 16> config_to_speed{{
+        {PerformanceConfiguration::Config1, 1020},
+        {PerformanceConfiguration::Config2, 1020},
+        {PerformanceConfiguration::Config3, 1224},
+        {PerformanceConfiguration::Config4, 1020},
+        {PerformanceConfiguration::Config5, 1020},
+        {PerformanceConfiguration::Config6, 1224},
+        {PerformanceConfiguration::Config7, 1020},
+        {PerformanceConfiguration::Config8, 1020},
+        {PerformanceConfiguration::Config9, 1020},
+        {PerformanceConfiguration::Config10, 1020},
+        {PerformanceConfiguration::Config11, 1020},
+        {PerformanceConfiguration::Config12, 1020},
+        {PerformanceConfiguration::Config13, 1785},
+        {PerformanceConfiguration::Config14, 1785},
+        {PerformanceConfiguration::Config15, 1020},
+        {PerformanceConfiguration::Config16, 1020},
+    }};
+
+    const auto iter = std::find_if(config_to_speed.cbegin(), config_to_speed.cend(),
+                                   [config](const auto& entry) { return entry.first == config; });
+
+    if (iter == config_to_speed.cend()) {
+        LOG_ERROR(Service_APM, "Invalid performance configuration value provided: {}", config);
+        return;
+    }
+
+    SetClockSpeed(iter->second);
+    configs.insert_or_assign(mode, config);
+}
+
+void Controller::SetFromCpuBoostMode(CpuBoostMode mode) {
+    constexpr std::array<PerformanceConfiguration, 3> BOOST_MODE_TO_CONFIG_MAP{{
+        PerformanceConfiguration::Config7,
+        PerformanceConfiguration::Config13,
+        PerformanceConfiguration::Config15,
+    }};
+
+    SetPerformanceConfiguration(PerformanceMode::Docked,
+                                BOOST_MODE_TO_CONFIG_MAP.at(static_cast<u32>(mode)));
+}
+
+PerformanceMode Controller::GetCurrentPerformanceMode() const {
+    return Settings::values.use_docked_mode.GetValue() ? PerformanceMode::Docked
+                                                       : PerformanceMode::Handheld;
+}
+
+PerformanceConfiguration Controller::GetCurrentPerformanceConfiguration(PerformanceMode mode) {
+    if (configs.find(mode) == configs.end()) {
+        configs.insert_or_assign(mode, DEFAULT_PERFORMANCE_CONFIGURATION);
+    }
+
+    return configs[mode];
+}
+
+void Controller::SetClockSpeed(u32 mhz) {
+    LOG_INFO(Service_APM, "called, mhz={:08X}", mhz);
+    // TODO(DarkLordZach): Actually signal core_timing to change clock speed.
+    // TODO(Rodrigo): Remove [[maybe_unused]] when core_timing is used.
+}
+
+} // namespace Service::APM

src/core/hle/service/apm/controller.h

@@ -0,0 +1,70 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <map>
+#include "common/common_types.h"
+
+namespace Core::Timing {
+class CoreTiming;
+}
+
+namespace Service::APM {
+
+enum class PerformanceConfiguration : u32 {
+    Config1 = 0x00010000,
+    Config2 = 0x00010001,
+    Config3 = 0x00010002,
+    Config4 = 0x00020000,
+    Config5 = 0x00020001,
+    Config6 = 0x00020002,
+    Config7 = 0x00020003,
+    Config8 = 0x00020004,
+    Config9 = 0x00020005,
+    Config10 = 0x00020006,
+    Config11 = 0x92220007,
+    Config12 = 0x92220008,
+    Config13 = 0x92220009,
+    Config14 = 0x9222000A,
+    Config15 = 0x9222000B,
+    Config16 = 0x9222000C,
+};
+
+enum class CpuBoostMode : u32 {
+    Disabled = 0,
+    Full = 1,    // CPU + GPU -> Config 13, 14, 15, or 16
+    Partial = 2, // GPU Only -> Config 15 or 16
+};
+
+enum class PerformanceMode : u8 {
+    Handheld = 0,
+    Docked = 1,
+};
+
+// Class to manage the state and change of the emulated system performance.
+// Specifically, this deals with PerformanceMode, which corresponds to the system being docked or
+// undocked, and PerformanceConfig which specifies the exact CPU, GPU, and Memory clocks to operate
+// at. Additionally, this manages 'Boost Mode', which allows games to temporarily overclock the
+// system during times of high load -- this simply maps to different PerformanceConfigs to use.
+class Controller {
+public:
+    explicit Controller(Core::Timing::CoreTiming& core_timing);
+    ~Controller();
+
+    void SetPerformanceConfiguration(PerformanceMode mode, PerformanceConfiguration config);
+    void SetFromCpuBoostMode(CpuBoostMode mode);
+
+    PerformanceMode GetCurrentPerformanceMode() const;
+    PerformanceConfiguration GetCurrentPerformanceConfiguration(PerformanceMode mode);
+
+private:
+    void SetClockSpeed(u32 mhz);
+
+    [[maybe_unused]] Core::Timing::CoreTiming& core_timing;
+
+    std::map<PerformanceMode, PerformanceConfiguration> configs;
+};
+
+} // namespace Service::APM

src/core/hle/service/apm/interface.cpp

@@ -0,0 +1,130 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/apm/apm.h"
+#include "core/hle/service/apm/controller.h"
+#include "core/hle/service/apm/interface.h"
+
+namespace Service::APM {
+
+class ISession final : public ServiceFramework<ISession> {
+public:
+    explicit ISession(Core::System& system_, Controller& controller_)
+        : ServiceFramework{system_, "ISession"}, controller{controller_} {
+        static const FunctionInfo functions[] = {
+            {0, &ISession::SetPerformanceConfiguration, "SetPerformanceConfiguration"},
+            {1, &ISession::GetPerformanceConfiguration, "GetPerformanceConfiguration"},
+            {2, nullptr, "SetCpuOverclockEnabled"},
+        };
+        RegisterHandlers(functions);
+    }
+
+private:
+    void SetPerformanceConfiguration(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+
+        const auto mode = rp.PopEnum<PerformanceMode>();
+        const auto config = rp.PopEnum<PerformanceConfiguration>();
+        LOG_DEBUG(Service_APM, "called mode={} config={}", mode, config);
+
+        controller.SetPerformanceConfiguration(mode, config);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetPerformanceConfiguration(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+
+        const auto mode = rp.PopEnum<PerformanceMode>();
+        LOG_DEBUG(Service_APM, "called mode={}", mode);
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushEnum(controller.GetCurrentPerformanceConfiguration(mode));
+    }
+
+    Controller& controller;
+};
+
+APM::APM(Core::System& system_, std::shared_ptr<Module> apm_, Controller& controller_,
+         const char* name)
+    : ServiceFramework{system_, name}, apm(std::move(apm_)), controller{controller_} {
+    static const FunctionInfo functions[] = {
+        {0, &APM::OpenSession, "OpenSession"},
+        {1, &APM::GetPerformanceMode, "GetPerformanceMode"},
+        {6, nullptr, "IsCpuOverclockEnabled"},
+    };
+    RegisterHandlers(functions);
+}
+
+APM::~APM() = default;
+
+void APM::OpenSession(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_APM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<ISession>(system, controller);
+}
+
+void APM::GetPerformanceMode(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_APM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.PushEnum(controller.GetCurrentPerformanceMode());
+}
+
+APM_Sys::APM_Sys(Core::System& system_, Controller& controller_)
+    : ServiceFramework{system_, "apm:sys"}, controller{controller_} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "RequestPerformanceMode"},
+        {1, &APM_Sys::GetPerformanceEvent, "GetPerformanceEvent"},
+        {2, nullptr, "GetThrottlingState"},
+        {3, nullptr, "GetLastThrottlingState"},
+        {4, nullptr, "ClearLastThrottlingState"},
+        {5, nullptr, "LoadAndApplySettings"},
+        {6, &APM_Sys::SetCpuBoostMode, "SetCpuBoostMode"},
+        {7, &APM_Sys::GetCurrentPerformanceConfiguration, "GetCurrentPerformanceConfiguration"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+APM_Sys::~APM_Sys() = default;
+
+void APM_Sys::GetPerformanceEvent(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_APM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<ISession>(system, controller);
+}
+
+void APM_Sys::SetCpuBoostMode(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto mode = rp.PopEnum<CpuBoostMode>();
+
+    LOG_DEBUG(Service_APM, "called, mode={:08X}", mode);
+
+    controller.SetFromCpuBoostMode(mode);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+void APM_Sys::GetCurrentPerformanceConfiguration(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_APM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushEnum(
+        controller.GetCurrentPerformanceConfiguration(controller.GetCurrentPerformanceMode()));
+}
+
+} // namespace Service::APM

src/core/hle/service/apm/interface.h

@@ -0,0 +1,42 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Service::APM {
+
+class Controller;
+class Module;
+
+class APM final : public ServiceFramework<APM> {
+public:
+    explicit APM(Core::System& system_, std::shared_ptr<Module> apm_, Controller& controller_,
+                 const char* name);
+    ~APM() override;
+
+private:
+    void OpenSession(Kernel::HLERequestContext& ctx);
+    void GetPerformanceMode(Kernel::HLERequestContext& ctx);
+
+    std::shared_ptr<Module> apm;
+    Controller& controller;
+};
+
+class APM_Sys final : public ServiceFramework<APM_Sys> {
+public:
+    explicit APM_Sys(Core::System& system_, Controller& controller);
+    ~APM_Sys() override;
+
+    void SetCpuBoostMode(Kernel::HLERequestContext& ctx);
+
+private:
+    void GetPerformanceEvent(Kernel::HLERequestContext& ctx);
+    void GetCurrentPerformanceConfiguration(Kernel::HLERequestContext& ctx);
+
+    Controller& controller;
+};
+
+} // namespace Service::APM

src/core/hle/service/audio/audctl.cpp

@@ -0,0 +1,76 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/audio/audctl.h"
+
+namespace Service::Audio {
+
+AudCtl::AudCtl(Core::System& system_) : ServiceFramework{system_, "audctl"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "GetTargetVolume"},
+        {1, nullptr, "SetTargetVolume"},
+        {2, &AudCtl::GetTargetVolumeMin, "GetTargetVolumeMin"},
+        {3, &AudCtl::GetTargetVolumeMax, "GetTargetVolumeMax"},
+        {4, nullptr, "IsTargetMute"},
+        {5, nullptr, "SetTargetMute"},
+        {6, nullptr, "IsTargetConnected"},
+        {7, nullptr, "SetDefaultTarget"},
+        {8, nullptr, "GetDefaultTarget"},
+        {9, nullptr, "GetAudioOutputMode"},
+        {10, nullptr, "SetAudioOutputMode"},
+        {11, nullptr, "SetForceMutePolicy"},
+        {12, nullptr, "GetForceMutePolicy"},
+        {13, nullptr, "GetOutputModeSetting"},
+        {14, nullptr, "SetOutputModeSetting"},
+        {15, nullptr, "SetOutputTarget"},
+        {16, nullptr, "SetInputTargetForceEnabled"},
+        {17, nullptr, "SetHeadphoneOutputLevelMode"},
+        {18, nullptr, "GetHeadphoneOutputLevelMode"},
+        {19, nullptr, "AcquireAudioVolumeUpdateEventForPlayReport"},
+        {20, nullptr, "AcquireAudioOutputDeviceUpdateEventForPlayReport"},
+        {21, nullptr, "GetAudioOutputTargetForPlayReport"},
+        {22, nullptr, "NotifyHeadphoneVolumeWarningDisplayedEvent"},
+        {23, nullptr, "SetSystemOutputMasterVolume"},
+        {24, nullptr, "GetSystemOutputMasterVolume"},
+        {25, nullptr, "GetAudioVolumeDataForPlayReport"},
+        {26, nullptr, "UpdateHeadphoneSettings"},
+        {27, nullptr, "SetVolumeMappingTableForDev"},
+        {28, nullptr, "GetAudioOutputChannelCountForPlayReport"},
+        {29, nullptr, "BindAudioOutputChannelCountUpdateEventForPlayReport"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudCtl::~AudCtl() = default;
+
+void AudCtl::GetTargetVolumeMin(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Audio, "called.");
+
+    // This service function is currently hardcoded on the
+    // actual console to this value (as of 8.0.0).
+    constexpr s32 target_min_volume = 0;
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(target_min_volume);
+}
+
+void AudCtl::GetTargetVolumeMax(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Audio, "called.");
+
+    // This service function is currently hardcoded on the
+    // actual console to this value (as of 8.0.0).
+    constexpr s32 target_max_volume = 15;
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(target_max_volume);
+}
+
+} // namespace Service::Audio

src/core/hle/service/audio/audctl.h

@@ -0,0 +1,25 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class AudCtl final : public ServiceFramework<AudCtl> {
+public:
+    explicit AudCtl(Core::System& system_);
+    ~AudCtl() override;
+
+private:
+    void GetTargetVolumeMin(Kernel::HLERequestContext& ctx);
+    void GetTargetVolumeMax(Kernel::HLERequestContext& ctx);
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/auddbg.cpp

@@ -0,0 +1,22 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/auddbg.h"
+
+namespace Service::Audio {
+
+AudDbg::AudDbg(Core::System& system_, const char* name) : ServiceFramework{system_, name} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "RequestSuspendForDebug"},
+        {1, nullptr, "RequestResumeForDebug"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudDbg::~AudDbg() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/auddbg.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class AudDbg final : public ServiceFramework<AudDbg> {
+public:
+    explicit AudDbg(Core::System& system_, const char* name);
+    ~AudDbg() override;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audin_a.cpp

@@ -0,0 +1,24 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/audin_a.h"
+
+namespace Service::Audio {
+
+AudInA::AudInA(Core::System& system_) : ServiceFramework{system_, "audin:a"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "RequestSuspendAudioIns"},
+        {1, nullptr, "RequestResumeAudioIns"},
+        {2, nullptr, "GetAudioInsProcessMasterVolume"},
+        {3, nullptr, "SetAudioInsProcessMasterVolume"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudInA::~AudInA() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/audin_a.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class AudInA final : public ServiceFramework<AudInA> {
+public:
+    explicit AudInA(Core::System& system_);
+    ~AudInA() override;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audin_u.cpp

@@ -0,0 +1,112 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/service/audio/audin_u.h"
+
+namespace Service::Audio {
+
+class IAudioIn final : public ServiceFramework<IAudioIn> {
+public:
+    explicit IAudioIn(Core::System& system_) : ServiceFramework{system_, "IAudioIn"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetAudioInState"},
+            {1, nullptr, "StartAudioIn"},
+            {2, nullptr, "StopAudioIn"},
+            {3, nullptr, "AppendAudioInBuffer"},
+            {4, nullptr, "RegisterBufferEvent"},
+            {5, nullptr, "GetReleasedAudioInBuffer"},
+            {6, nullptr, "ContainsAudioInBuffer"},
+            {7, nullptr, "AppendAudioInBufferWithUserEvent"},
+            {8, nullptr, "AppendAudioInBufferAuto"},
+            {9, nullptr, "GetReleasedAudioInBufferAuto"},
+            {10, nullptr, "AppendAudioInBufferWithUserEventAuto"},
+            {11, nullptr, "GetAudioInBufferCount"},
+            {12, nullptr, "SetAudioInDeviceGain"},
+            {13, nullptr, "GetAudioInDeviceGain"},
+            {14, nullptr, "FlushAudioInBuffers"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+AudInU::AudInU(Core::System& system_) : ServiceFramework{system_, "audin:u"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, &AudInU::ListAudioIns, "ListAudioIns"},
+        {1, &AudInU::OpenAudioIn, "OpenAudioIn"},
+        {2, &AudInU::ListAudioIns, "ListAudioInsAuto"},
+        {3, &AudInU::OpenAudioIn, "OpenAudioInAuto"},
+        {4, &AudInU::ListAudioInsAutoFiltered, "ListAudioInsAutoFiltered"},
+        {5, &AudInU::OpenAudioInProtocolSpecified, "OpenAudioInProtocolSpecified"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudInU::~AudInU() = default;
+
+void AudInU::ListAudioIns(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_Audio, "called");
+    const std::size_t count = ctx.GetWriteBufferSize() / sizeof(AudioInDeviceName);
+
+    const std::size_t device_count = std::min(count, audio_device_names.size());
+    std::vector<AudioInDeviceName> device_names;
+    device_names.reserve(device_count);
+
+    for (std::size_t i = 0; i < device_count; i++) {
+        const auto& device_name = audio_device_names[i];
+        auto& entry = device_names.emplace_back();
+        device_name.copy(entry.data(), device_name.size());
+    }
+
+    ctx.WriteBuffer(device_names);
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(static_cast<u32>(device_names.size()));
+}
+
+void AudInU::ListAudioInsAutoFiltered(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_Audio, "called");
+    constexpr u32 device_count = 0;
+
+    // Since we don't actually use any other audio input devices, we return 0 devices. Filtered
+    // device listing just omits the default input device
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(static_cast<u32>(device_count));
+}
+
+void AudInU::OpenInOutImpl(Kernel::HLERequestContext& ctx) {
+    AudInOutParams params{};
+    params.channel_count = 2;
+    params.sample_format = SampleFormat::PCM16;
+    params.sample_rate = 48000;
+    params.state = State::Started;
+
+    IPC::ResponseBuilder rb{ctx, 6, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushRaw<AudInOutParams>(params);
+    rb.PushIpcInterface<IAudioIn>(system);
+}
+
+void AudInU::OpenAudioIn(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_Audio, "(STUBBED) called");
+    OpenInOutImpl(ctx);
+}
+
+void AudInU::OpenAudioInProtocolSpecified(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_Audio, "(STUBBED) called");
+    OpenInOutImpl(ctx);
+}
+
+} // namespace Service::Audio

src/core/hle/service/audio/audin_u.h

@@ -0,0 +1,54 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class HLERequestContext;
+}
+
+namespace Service::Audio {
+
+class AudInU final : public ServiceFramework<AudInU> {
+public:
+    explicit AudInU(Core::System& system_);
+    ~AudInU() override;
+
+private:
+    enum class SampleFormat : u32_le {
+        PCM16 = 2,
+    };
+
+    enum class State : u32_le {
+        Started = 0,
+        Stopped = 1,
+    };
+
+    struct AudInOutParams {
+        u32_le sample_rate{};
+        u32_le channel_count{};
+        SampleFormat sample_format{};
+        State state{};
+    };
+    static_assert(sizeof(AudInOutParams) == 0x10, "AudInOutParams is an invalid size");
+
+    using AudioInDeviceName = std::array<char, 256>;
+    static constexpr std::array<std::string_view, 1> audio_device_names{{
+        "BuiltInHeadset",
+    }};
+
+    void ListAudioIns(Kernel::HLERequestContext& ctx);
+    void ListAudioInsAutoFiltered(Kernel::HLERequestContext& ctx);
+    void OpenInOutImpl(Kernel::HLERequestContext& ctx);
+    void OpenAudioIn(Kernel::HLERequestContext& ctx);
+    void OpenAudioInProtocolSpecified(Kernel::HLERequestContext& ctx);
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audio.cpp

@@ -0,0 +1,41 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/audctl.h"
+#include "core/hle/service/audio/auddbg.h"
+#include "core/hle/service/audio/audin_a.h"
+#include "core/hle/service/audio/audin_u.h"
+#include "core/hle/service/audio/audio.h"
+#include "core/hle/service/audio/audout_a.h"
+#include "core/hle/service/audio/audout_u.h"
+#include "core/hle/service/audio/audrec_a.h"
+#include "core/hle/service/audio/audrec_u.h"
+#include "core/hle/service/audio/audren_a.h"
+#include "core/hle/service/audio/audren_u.h"
+#include "core/hle/service/audio/codecctl.h"
+#include "core/hle/service/audio/hwopus.h"
+#include "core/hle/service/service.h"
+
+namespace Service::Audio {
+
+void InstallInterfaces(SM::ServiceManager& service_manager, Core::System& system) {
+    std::make_shared<AudCtl>(system)->InstallAsService(service_manager);
+    std::make_shared<AudOutA>(system)->InstallAsService(service_manager);
+    std::make_shared<AudOutU>(system)->InstallAsService(service_manager);
+    std::make_shared<AudInA>(system)->InstallAsService(service_manager);
+    std::make_shared<AudInU>(system)->InstallAsService(service_manager);
+    std::make_shared<AudRecA>(system)->InstallAsService(service_manager);
+    std::make_shared<AudRecU>(system)->InstallAsService(service_manager);
+    std::make_shared<AudRenA>(system)->InstallAsService(service_manager);
+    std::make_shared<AudRenU>(system)->InstallAsService(service_manager);
+    std::make_shared<CodecCtl>(system)->InstallAsService(service_manager);
+    std::make_shared<HwOpus>(system)->InstallAsService(service_manager);
+
+    std::make_shared<AudDbg>(system, "audin:d")->InstallAsService(service_manager);
+    std::make_shared<AudDbg>(system, "audout:d")->InstallAsService(service_manager);
+    std::make_shared<AudDbg>(system, "audrec:d")->InstallAsService(service_manager);
+    std::make_shared<AudDbg>(system, "audren:d")->InstallAsService(service_manager);
+}
+
+} // namespace Service::Audio

src/core/hle/service/audio/audio.h

@@ -0,0 +1,20 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Core {
+class System;
+}
+
+namespace Service::SM {
+class ServiceManager;
+}
+
+namespace Service::Audio {
+
+/// Registers all Audio services with the specified service manager.
+void InstallInterfaces(SM::ServiceManager& service_manager, Core::System& system);
+
+} // namespace Service::Audio

src/core/hle/service/audio/audout_a.cpp

@@ -0,0 +1,26 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/audout_a.h"
+
+namespace Service::Audio {
+
+AudOutA::AudOutA(Core::System& system_) : ServiceFramework{system_, "audout:a"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "RequestSuspendAudioOuts"},
+        {1, nullptr, "RequestResumeAudioOuts"},
+        {2, nullptr, "GetAudioOutsProcessMasterVolume"},
+        {3, nullptr, "SetAudioOutsProcessMasterVolume"},
+        {4, nullptr, "GetAudioOutsProcessRecordVolume"},
+        {5, nullptr, "SetAudioOutsProcessRecordVolume"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudOutA::~AudOutA() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/audout_a.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class AudOutA final : public ServiceFramework<AudOutA> {
+public:
+    explicit AudOutA(Core::System& system_);
+    ~AudOutA() override;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audout_u.cpp

@@ -0,0 +1,281 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <array>
+#include <cstring>
+#include <vector>
+
+#include "audio_core/audio_out.h"
+#include "audio_core/codec.h"
+#include "common/common_funcs.h"
+#include "common/logging/log.h"
+#include "common/swap.h"
+#include "core/core.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/audio/audout_u.h"
+#include "core/hle/service/audio/errors.h"
+#include "core/memory.h"
+
+namespace Service::Audio {
+
+constexpr std::array<char, 10> DefaultDevice{{"DeviceOut"}};
+constexpr int DefaultSampleRate{48000};
+
+struct AudoutParams {
+    s32_le sample_rate;
+    u16_le channel_count;
+    INSERT_PADDING_BYTES(2);
+};
+static_assert(sizeof(AudoutParams) == 0x8, "AudoutParams is an invalid size");
+
+enum class AudioState : u32 {
+    Started,
+    Stopped,
+};
+
+class IAudioOut final : public ServiceFramework<IAudioOut> {
+public:
+    IAudioOut(Core::System& system_, AudoutParams audio_params_, AudioCore::AudioOut& audio_core_,
+              std::string&& device_name_, std::string&& unique_name)
+        : ServiceFramework{system_, "IAudioOut"}, audio_core{audio_core_},
+          device_name{std::move(device_name_)}, audio_params{audio_params_}, main_memory{
+                                                                                 system.Memory()} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IAudioOut::GetAudioOutState, "GetAudioOutState"},
+            {1, &IAudioOut::StartAudioOut, "StartAudioOut"},
+            {2, &IAudioOut::StopAudioOut, "StopAudioOut"},
+            {3, &IAudioOut::AppendAudioOutBufferImpl, "AppendAudioOutBuffer"},
+            {4, &IAudioOut::RegisterBufferEvent, "RegisterBufferEvent"},
+            {5, &IAudioOut::GetReleasedAudioOutBufferImpl, "GetReleasedAudioOutBuffer"},
+            {6, &IAudioOut::ContainsAudioOutBuffer, "ContainsAudioOutBuffer"},
+            {7, &IAudioOut::AppendAudioOutBufferImpl, "AppendAudioOutBufferAuto"},
+            {8, &IAudioOut::GetReleasedAudioOutBufferImpl, "GetReleasedAudioOutBufferAuto"},
+            {9, &IAudioOut::GetAudioOutBufferCount, "GetAudioOutBufferCount"},
+            {10, nullptr, "GetAudioOutPlayedSampleCount"},
+            {11, nullptr, "FlushAudioOutBuffers"},
+            {12, &IAudioOut::SetAudioOutVolume, "SetAudioOutVolume"},
+            {13, &IAudioOut::GetAudioOutVolume, "GetAudioOutVolume"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+
+        // This is the event handle used to check if the audio buffer was released
+        buffer_event =
+            Kernel::WritableEvent::CreateEventPair(system.Kernel(), "IAudioOutBufferReleased");
+
+        stream = audio_core.OpenStream(system.CoreTiming(), audio_params.sample_rate,
+                                       audio_params.channel_count, std::move(unique_name),
+                                       [this] { buffer_event.writable->Signal(); });
+    }
+
+private:
+    struct AudioBuffer {
+        u64_le next;
+        u64_le buffer;
+        u64_le buffer_capacity;
+        u64_le buffer_size;
+        u64_le offset;
+    };
+    static_assert(sizeof(AudioBuffer) == 0x28, "AudioBuffer is an invalid size");
+
+    void GetAudioOutState(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(static_cast<u32>(stream->IsPlaying() ? AudioState::Started : AudioState::Stopped));
+    }
+
+    void StartAudioOut(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        if (stream->IsPlaying()) {
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERR_OPERATION_FAILED);
+            return;
+        }
+
+        audio_core.StartStream(stream);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void StopAudioOut(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        if (stream->IsPlaying()) {
+            audio_core.StopStream(stream);
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void RegisterBufferEvent(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(buffer_event.readable);
+    }
+
+    void AppendAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "(STUBBED) called {}", ctx.Description());
+        IPC::RequestParser rp{ctx};
+
+        const auto& input_buffer{ctx.ReadBuffer()};
+        ASSERT_MSG(input_buffer.size() == sizeof(AudioBuffer),
+                   "AudioBuffer input is an invalid size!");
+        AudioBuffer audio_buffer{};
+        std::memcpy(&audio_buffer, input_buffer.data(), sizeof(AudioBuffer));
+        const u64 tag{rp.Pop<u64>()};
+
+        std::vector<s16> samples(audio_buffer.buffer_size / sizeof(s16));
+        main_memory.ReadBlock(audio_buffer.buffer, samples.data(), audio_buffer.buffer_size);
+
+        if (!audio_core.QueueBuffer(stream, tag, std::move(samples))) {
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERR_BUFFER_COUNT_EXCEEDED);
+            return;
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetReleasedAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called {}", ctx.Description());
+
+        const u64 max_count{ctx.GetWriteBufferSize() / sizeof(u64)};
+        const auto released_buffers{audio_core.GetTagsAndReleaseBuffers(stream, max_count)};
+
+        std::vector<u64> tags{released_buffers};
+        tags.resize(max_count);
+        ctx.WriteBuffer(tags);
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(static_cast<u32>(released_buffers.size()));
+    }
+
+    void ContainsAudioOutBuffer(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::RequestParser rp{ctx};
+        const u64 tag{rp.Pop<u64>()};
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(stream->ContainsBuffer(tag));
+    }
+
+    void GetAudioOutBufferCount(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(static_cast<u32>(stream->GetQueueSize()));
+    }
+
+    void SetAudioOutVolume(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const float volume = rp.Pop<float>();
+        LOG_DEBUG(Service_Audio, "called, volume={}", volume);
+
+        stream->SetVolume(volume);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetAudioOutVolume(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(stream->GetVolume());
+    }
+
+    AudioCore::AudioOut& audio_core;
+    AudioCore::StreamPtr stream;
+    std::string device_name;
+
+    [[maybe_unused]] AudoutParams audio_params{};
+
+    /// This is the event handle used to check if the audio buffer was released
+    Kernel::EventPair buffer_event;
+    Core::Memory::Memory& main_memory;
+};
+
+AudOutU::AudOutU(Core::System& system_) : ServiceFramework{system_, "audout:u"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, &AudOutU::ListAudioOutsImpl, "ListAudioOuts"},
+        {1, &AudOutU::OpenAudioOutImpl, "OpenAudioOut"},
+        {2, &AudOutU::ListAudioOutsImpl, "ListAudioOutsAuto"},
+        {3, &AudOutU::OpenAudioOutImpl, "OpenAudioOutAuto"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+    audio_core = std::make_unique<AudioCore::AudioOut>();
+}
+
+AudOutU::~AudOutU() = default;
+
+void AudOutU::ListAudioOutsImpl(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_Audio, "called");
+
+    ctx.WriteBuffer(DefaultDevice);
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push<u32>(1); // Amount of audio devices
+}
+
+void AudOutU::OpenAudioOutImpl(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_Audio, "called");
+
+    const auto device_name_data{ctx.ReadBuffer()};
+    std::string device_name;
+    if (device_name_data[0] != '\0') {
+        device_name.assign(device_name_data.begin(), device_name_data.end());
+    } else {
+        device_name.assign(DefaultDevice.begin(), DefaultDevice.end());
+    }
+    ctx.WriteBuffer(device_name);
+
+    IPC::RequestParser rp{ctx};
+    auto params{rp.PopRaw<AudoutParams>()};
+    if (params.channel_count <= 2) {
+        // Mono does not exist for audout
+        params.channel_count = 2;
+    } else {
+        params.channel_count = 6;
+    }
+    if (!params.sample_rate) {
+        params.sample_rate = DefaultSampleRate;
+    }
+
+    std::string unique_name{fmt::format("{}-{}", device_name, audio_out_interfaces.size())};
+    auto audio_out_interface = std::make_shared<IAudioOut>(
+        system, params, *audio_core, std::move(device_name), std::move(unique_name));
+
+    IPC::ResponseBuilder rb{ctx, 6, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push<u32>(DefaultSampleRate);
+    rb.Push<u32>(params.channel_count);
+    rb.Push<u32>(static_cast<u32>(AudioCore::Codec::PcmFormat::Int16));
+    rb.Push<u32>(static_cast<u32>(AudioState::Stopped));
+    rb.PushIpcInterface<IAudioOut>(audio_out_interface);
+
+    audio_out_interfaces.push_back(std::move(audio_out_interface));
+}
+
+} // namespace Service::Audio

src/core/hle/service/audio/audout_u.h

@@ -0,0 +1,39 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+#include "core/hle/service/service.h"
+
+namespace AudioCore {
+class AudioOut;
+}
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class HLERequestContext;
+}
+
+namespace Service::Audio {
+
+class IAudioOut;
+
+class AudOutU final : public ServiceFramework<AudOutU> {
+public:
+    explicit AudOutU(Core::System& system_);
+    ~AudOutU() override;
+
+private:
+    void ListAudioOutsImpl(Kernel::HLERequestContext& ctx);
+    void OpenAudioOutImpl(Kernel::HLERequestContext& ctx);
+
+    std::vector<std::shared_ptr<IAudioOut>> audio_out_interfaces;
+    std::unique_ptr<AudioCore::AudioOut> audio_core;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audrec_a.cpp

@@ -0,0 +1,22 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/audrec_a.h"
+
+namespace Service::Audio {
+
+AudRecA::AudRecA(Core::System& system_) : ServiceFramework{system_, "audrec:a"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "RequestSuspendFinalOutputRecorders"},
+        {1, nullptr, "RequestResumeFinalOutputRecorders"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudRecA::~AudRecA() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/audrec_a.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class AudRecA final : public ServiceFramework<AudRecA> {
+public:
+    explicit AudRecA(Core::System& system_);
+    ~AudRecA() override;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audrec_u.cpp

@@ -0,0 +1,42 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/audrec_u.h"
+
+namespace Service::Audio {
+
+class IFinalOutputRecorder final : public ServiceFramework<IFinalOutputRecorder> {
+public:
+    explicit IFinalOutputRecorder(Core::System& system_)
+        : ServiceFramework{system_, "IFinalOutputRecorder"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetFinalOutputRecorderState"},
+            {1, nullptr, "StartFinalOutputRecorder"},
+            {2, nullptr, "StopFinalOutputRecorder"},
+            {3, nullptr, "AppendFinalOutputRecorderBuffer"},
+            {4, nullptr, "RegisterBufferEvent"},
+            {5, nullptr, "GetReleasedFinalOutputRecorderBuffer"},
+            {6, nullptr, "ContainsFinalOutputRecorderBuffer"},
+            {7, nullptr, "GetFinalOutputRecorderBufferEndTime"},
+            {8, nullptr, "AppendFinalOutputRecorderBufferAuto"},
+            {9, nullptr, "GetReleasedFinalOutputRecorderBufferAuto"},
+            {10, nullptr, "FlushFinalOutputRecorderBuffers"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+AudRecU::AudRecU(Core::System& system_) : ServiceFramework{system_, "audrec:u"} {
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "OpenFinalOutputRecorder"},
+    };
+    RegisterHandlers(functions);
+}
+
+AudRecU::~AudRecU() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/audrec_u.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class AudRecU final : public ServiceFramework<AudRecU> {
+public:
+    explicit AudRecU(Core::System& system_);
+    ~AudRecU() override;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audren_a.cpp

@@ -0,0 +1,28 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/audren_a.h"
+
+namespace Service::Audio {
+
+AudRenA::AudRenA(Core::System& system_) : ServiceFramework{system_, "audren:a"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "RequestSuspendAudioRenderers"},
+        {1, nullptr, "RequestResumeAudioRenderers"},
+        {2, nullptr, "GetAudioRenderersProcessMasterVolume"},
+        {3, nullptr, "SetAudioRenderersProcessMasterVolume"},
+        {4, nullptr, "RegisterAppletResourceUserId"},
+        {5, nullptr, "UnregisterAppletResourceUserId"},
+        {6, nullptr, "GetAudioRenderersProcessRecordVolume"},
+        {7, nullptr, "SetAudioRenderersProcessRecordVolume"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudRenA::~AudRenA() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/audren_a.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class AudRenA final : public ServiceFramework<AudRenA> {
+public:
+    explicit AudRenA(Core::System& system_);
+    ~AudRenA() override;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/audren_u.cpp

@@ -0,0 +1,713 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <array>
+#include <memory>
+#include <string_view>
+
+#include "audio_core/audio_renderer.h"
+#include "common/alignment.h"
+#include "common/bit_util.h"
+#include "common/common_funcs.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/audio/audren_u.h"
+#include "core/hle/service/audio/errors.h"
+
+namespace Service::Audio {
+
+class IAudioRenderer final : public ServiceFramework<IAudioRenderer> {
+public:
+    explicit IAudioRenderer(Core::System& system, AudioCommon::AudioRendererParameter audren_params,
+                            const std::size_t instance_number)
+        : ServiceFramework{system, "IAudioRenderer"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IAudioRenderer::GetSampleRate, "GetSampleRate"},
+            {1, &IAudioRenderer::GetSampleCount, "GetSampleCount"},
+            {2, &IAudioRenderer::GetMixBufferCount, "GetMixBufferCount"},
+            {3, &IAudioRenderer::GetState, "GetState"},
+            {4, &IAudioRenderer::RequestUpdateImpl, "RequestUpdate"},
+            {5, &IAudioRenderer::Start, "Start"},
+            {6, &IAudioRenderer::Stop, "Stop"},
+            {7, &IAudioRenderer::QuerySystemEvent, "QuerySystemEvent"},
+            {8, &IAudioRenderer::SetRenderingTimeLimit, "SetRenderingTimeLimit"},
+            {9, &IAudioRenderer::GetRenderingTimeLimit, "GetRenderingTimeLimit"},
+            {10, &IAudioRenderer::RequestUpdateImpl, "RequestUpdateAuto"},
+            {11, &IAudioRenderer::ExecuteAudioRendererRendering, "ExecuteAudioRendererRendering"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+
+        system_event =
+            Kernel::WritableEvent::CreateEventPair(system.Kernel(), "IAudioRenderer:SystemEvent");
+        renderer = std::make_unique<AudioCore::AudioRenderer>(system.CoreTiming(), system.Memory(),
+                                                              audren_params, system_event.writable,
+                                                              instance_number);
+    }
+
+private:
+    void UpdateAudioCallback() {
+        system_event.writable->Signal();
+    }
+
+    void GetSampleRate(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(renderer->GetSampleRate());
+    }
+
+    void GetSampleCount(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(renderer->GetSampleCount());
+    }
+
+    void GetState(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(static_cast<u32>(renderer->GetStreamState()));
+    }
+
+    void GetMixBufferCount(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(renderer->GetMixBufferCount());
+    }
+
+    void RequestUpdateImpl(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "(STUBBED) called");
+
+        std::vector<u8> output_params(ctx.GetWriteBufferSize());
+        auto result = renderer->UpdateAudioRenderer(ctx.ReadBuffer(), output_params);
+
+        if (result.IsSuccess()) {
+            ctx.WriteBuffer(output_params);
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(result);
+    }
+
+    void Start(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_Audio, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void Stop(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_Audio, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2};
+
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void QuerySystemEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_Audio, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(system_event.readable);
+    }
+
+    void SetRenderingTimeLimit(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        rendering_time_limit_percent = rp.Pop<u32>();
+        LOG_DEBUG(Service_Audio, "called. rendering_time_limit_percent={}",
+                  rendering_time_limit_percent);
+
+        ASSERT(rendering_time_limit_percent <= 100);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetRenderingTimeLimit(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(rendering_time_limit_percent);
+    }
+
+    void ExecuteAudioRendererRendering(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        // This service command currently only reports an unsupported operation
+        // error code, or aborts. Given that, we just always return an error
+        // code in this case.
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(ERR_NOT_SUPPORTED);
+    }
+
+    Kernel::EventPair system_event;
+    std::unique_ptr<AudioCore::AudioRenderer> renderer;
+    u32 rendering_time_limit_percent = 100;
+};
+
+class IAudioDevice final : public ServiceFramework<IAudioDevice> {
+public:
+    explicit IAudioDevice(Core::System& system_, u32_le revision_num)
+        : ServiceFramework{system_, "IAudioDevice"}, revision{revision_num} {
+        static const FunctionInfo functions[] = {
+            {0, &IAudioDevice::ListAudioDeviceName, "ListAudioDeviceName"},
+            {1, &IAudioDevice::SetAudioDeviceOutputVolume, "SetAudioDeviceOutputVolume"},
+            {2, &IAudioDevice::GetAudioDeviceOutputVolume, "GetAudioDeviceOutputVolume"},
+            {3, &IAudioDevice::GetActiveAudioDeviceName, "GetActiveAudioDeviceName"},
+            {4, &IAudioDevice::QueryAudioDeviceSystemEvent, "QueryAudioDeviceSystemEvent"},
+            {5, &IAudioDevice::GetActiveChannelCount, "GetActiveChannelCount"},
+            {6, &IAudioDevice::ListAudioDeviceName, "ListAudioDeviceNameAuto"},
+            {7, &IAudioDevice::SetAudioDeviceOutputVolume, "SetAudioDeviceOutputVolumeAuto"},
+            {8, &IAudioDevice::GetAudioDeviceOutputVolume, "GetAudioDeviceOutputVolumeAuto"},
+            {10, &IAudioDevice::GetActiveAudioDeviceName, "GetActiveAudioDeviceNameAuto"},
+            {11, &IAudioDevice::QueryAudioDeviceInputEvent, "QueryAudioDeviceInputEvent"},
+            {12, &IAudioDevice::QueryAudioDeviceOutputEvent, "QueryAudioDeviceOutputEvent"},
+            {13, nullptr, "GetAudioSystemMasterVolumeSetting"},
+        };
+        RegisterHandlers(functions);
+
+        auto& kernel = system.Kernel();
+        buffer_event =
+            Kernel::WritableEvent::CreateEventPair(kernel, "IAudioOutBufferReleasedEvent");
+
+        // Should be similar to audio_output_device_switch_event
+        audio_input_device_switch_event = Kernel::WritableEvent::CreateEventPair(
+            kernel, "IAudioDevice:AudioInputDeviceSwitchedEvent");
+
+        // Should only be signalled when an audio output device has been changed, example: speaker
+        // to headset
+        audio_output_device_switch_event = Kernel::WritableEvent::CreateEventPair(
+            kernel, "IAudioDevice:AudioOutputDeviceSwitchedEvent");
+    }
+
+private:
+    using AudioDeviceName = std::array<char, 256>;
+    static constexpr std::array<std::string_view, 4> audio_device_names{{
+        "AudioStereoJackOutput",
+        "AudioBuiltInSpeakerOutput",
+        "AudioTvOutput",
+        "AudioUsbDeviceOutput",
+    }};
+    enum class DeviceType {
+        AHUBHeadphones,
+        AHUBSpeakers,
+        HDA,
+        USBOutput,
+    };
+
+    void ListAudioDeviceName(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        const bool usb_output_supported =
+            IsFeatureSupported(AudioFeatures::AudioUSBDeviceOutput, revision);
+        const std::size_t count = ctx.GetWriteBufferSize() / sizeof(AudioDeviceName);
+
+        std::vector<AudioDeviceName> name_buffer;
+        name_buffer.reserve(audio_device_names.size());
+
+        for (std::size_t i = 0; i < count && i < audio_device_names.size(); i++) {
+            const auto type = static_cast<DeviceType>(i);
+
+            if (!usb_output_supported && type == DeviceType::USBOutput) {
+                continue;
+            }
+
+            const auto& device_name = audio_device_names[i];
+            auto& entry = name_buffer.emplace_back();
+            device_name.copy(entry.data(), device_name.size());
+        }
+
+        ctx.WriteBuffer(name_buffer);
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(static_cast<u32>(name_buffer.size()));
+    }
+
+    void SetAudioDeviceOutputVolume(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const f32 volume = rp.Pop<f32>();
+
+        const auto device_name_buffer = ctx.ReadBuffer();
+        const std::string name = Common::StringFromBuffer(device_name_buffer);
+
+        LOG_WARNING(Service_Audio, "(STUBBED) called. name={}, volume={}", name, volume);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void GetAudioDeviceOutputVolume(Kernel::HLERequestContext& ctx) {
+        const auto device_name_buffer = ctx.ReadBuffer();
+        const std::string name = Common::StringFromBuffer(device_name_buffer);
+
+        LOG_WARNING(Service_Audio, "(STUBBED) called. name={}", name);
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(1.0f);
+    }
+
+    void GetActiveAudioDeviceName(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_Audio, "(STUBBED) called");
+
+        // Currently set to always be TV audio output.
+        const auto& device_name = audio_device_names[2];
+
+        AudioDeviceName out_device_name{};
+        device_name.copy(out_device_name.data(), device_name.size());
+
+        ctx.WriteBuffer(out_device_name);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void QueryAudioDeviceSystemEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_Audio, "(STUBBED) called");
+
+        buffer_event.writable->Signal();
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(buffer_event.readable);
+    }
+
+    void GetActiveChannelCount(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_Audio, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(1);
+    }
+
+    // Should be similar to QueryAudioDeviceOutputEvent
+    void QueryAudioDeviceInputEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_Audio, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(audio_input_device_switch_event.readable);
+    }
+
+    void QueryAudioDeviceOutputEvent(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_Audio, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(audio_output_device_switch_event.readable);
+    }
+
+    u32_le revision = 0;
+    Kernel::EventPair buffer_event;
+    Kernel::EventPair audio_input_device_switch_event;
+    Kernel::EventPair audio_output_device_switch_event;
+
+}; // namespace Audio
+
+AudRenU::AudRenU(Core::System& system_) : ServiceFramework{system_, "audren:u"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, &AudRenU::OpenAudioRenderer, "OpenAudioRenderer"},
+        {1, &AudRenU::GetAudioRendererWorkBufferSize, "GetAudioRendererWorkBufferSize"},
+        {2, &AudRenU::GetAudioDeviceService, "GetAudioDeviceService"},
+        {3, &AudRenU::OpenAudioRendererAuto, "OpenAudioRendererAuto"},
+        {4, &AudRenU::GetAudioDeviceServiceWithRevisionInfo, "GetAudioDeviceServiceWithRevisionInfo"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+AudRenU::~AudRenU() = default;
+
+void AudRenU::OpenAudioRenderer(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_Audio, "called");
+
+    OpenAudioRendererImpl(ctx);
+}
+
+static u64 CalculateNumPerformanceEntries(const AudioCommon::AudioRendererParameter& params) {
+    // +1 represents the final mix.
+    return u64{params.effect_count} + params.submix_count + params.sink_count + params.voice_count +
+           1;
+}
+
+void AudRenU::GetAudioRendererWorkBufferSize(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_Audio, "called");
+
+    // Several calculations below align the sizes being calculated
+    // onto a 64 byte boundary.
+    static constexpr u64 buffer_alignment_size = 64;
+
+    // Some calculations that calculate portions of the buffer
+    // that will contain information, on the other hand, align
+    // the result of some of their calcularions on a 16 byte boundary.
+    static constexpr u64 info_field_alignment_size = 16;
+
+    // Maximum detail entries that may exist at one time for performance
+    // frame statistics.
+    static constexpr u64 max_perf_detail_entries = 100;
+
+    // Size of the data structure representing the bulk of the voice-related state.
+    static constexpr u64 voice_state_size = 0x100;
+
+    // Size of the upsampler manager data structure
+    constexpr u64 upsampler_manager_size = 0x48;
+
+    // Calculates the part of the size that relates to mix buffers.
+    const auto calculate_mix_buffer_sizes = [](const AudioCommon::AudioRendererParameter& params) {
+        // As of 8.0.0 this is the maximum on voice channels.
+        constexpr u64 max_voice_channels = 6;
+
+        // The service expects the sample_count member of the parameters to either be
+        // a value of 160 or 240, so the maximum sample count is assumed in order
+        // to adequately handle all values at runtime.
+        constexpr u64 default_max_sample_count = 240;
+
+        const u64 total_mix_buffers = params.mix_buffer_count + max_voice_channels;
+
+        u64 size = 0;
+        size += total_mix_buffers * (sizeof(s32) * params.sample_count);
+        size += total_mix_buffers * (sizeof(s32) * default_max_sample_count);
+        size += u64{params.submix_count} + params.sink_count;
+        size = Common::AlignUp(size, buffer_alignment_size);
+        size += Common::AlignUp(params.unknown_30, buffer_alignment_size);
+        size += Common::AlignUp(sizeof(s32) * params.mix_buffer_count, buffer_alignment_size);
+        return size;
+    };
+
+    // Calculates the portion of the size related to the mix data (and the sorting thereof).
+    const auto calculate_mix_info_size = [](const AudioCommon::AudioRendererParameter& params) {
+        // The size of the mixing info data structure.
+        constexpr u64 mix_info_size = 0x940;
+
+        // Consists of total submixes with the final mix included.
+        const u64 total_mix_count = u64{params.submix_count} + 1;
+
+        // The total number of effects that may be available to the audio renderer at any time.
+        constexpr u64 max_effects = 256;
+
+        // Calculates the part of the size related to the audio node state.
+        // This will only be used if the audio revision supports the splitter.
+        const auto calculate_node_state_size = [](std::size_t num_nodes) {
+            // Internally within a nodestate, it appears to use a data structure
+            // similar to a std::bitset<64> twice.
+            constexpr u64 bit_size = Common::BitSize<u64>();
+            constexpr u64 num_bitsets = 2;
+
+            // Node state instances have three states internally for performing
+            // depth-first searches of nodes. Initialized, Found, and Done Sorting.
+            constexpr u64 num_states = 3;
+
+            u64 size = 0;
+            size += (num_nodes * num_nodes) * sizeof(s32);
+            size += num_states * (num_nodes * sizeof(s32));
+            size += num_bitsets * (Common::AlignUp(num_nodes, bit_size) / Common::BitSize<u8>());
+            return size;
+        };
+
+        // Calculates the part of the size related to the adjacency (aka edge) matrix.
+        const auto calculate_edge_matrix_size = [](std::size_t num_nodes) {
+            return (num_nodes * num_nodes) * sizeof(s32);
+        };
+
+        u64 size = 0;
+        size += Common::AlignUp(sizeof(void*) * total_mix_count, info_field_alignment_size);
+        size += Common::AlignUp(mix_info_size * total_mix_count, info_field_alignment_size);
+        size += Common::AlignUp(sizeof(s32) * max_effects * params.submix_count,
+                                info_field_alignment_size);
+
+        if (IsFeatureSupported(AudioFeatures::Splitter, params.revision)) {
+            size += Common::AlignUp(calculate_node_state_size(total_mix_count) +
+                                        calculate_edge_matrix_size(total_mix_count),
+                                    info_field_alignment_size);
+        }
+
+        return size;
+    };
+
+    // Calculates the part of the size related to voice channel info.
+    const auto calculate_voice_info_size = [](const AudioCommon::AudioRendererParameter& params) {
+        constexpr u64 voice_info_size = 0x220;
+        constexpr u64 voice_resource_size = 0xD0;
+
+        u64 size = 0;
+        size += Common::AlignUp(sizeof(void*) * params.voice_count, info_field_alignment_size);
+        size += Common::AlignUp(voice_info_size * params.voice_count, info_field_alignment_size);
+        size +=
+            Common::AlignUp(voice_resource_size * params.voice_count, info_field_alignment_size);
+        size += Common::AlignUp(voice_state_size * params.voice_count, info_field_alignment_size);
+        return size;
+    };
+
+    // Calculates the part of the size related to memory pools.
+    const auto calculate_memory_pools_size = [](const AudioCommon::AudioRendererParameter& params) {
+        const u64 num_memory_pools = sizeof(s32) * (u64{params.effect_count} + params.voice_count);
+        const u64 memory_pool_info_size = 0x20;
+        return Common::AlignUp(num_memory_pools * memory_pool_info_size, info_field_alignment_size);
+    };
+
+    // Calculates the part of the size related to the splitter context.
+    const auto calculate_splitter_context_size =
+        [](const AudioCommon::AudioRendererParameter& params) -> u64 {
+        if (!IsFeatureSupported(AudioFeatures::Splitter, params.revision)) {
+            return 0;
+        }
+
+        constexpr u64 splitter_info_size = 0x20;
+        constexpr u64 splitter_destination_data_size = 0xE0;
+
+        u64 size = 0;
+        size += params.num_splitter_send_channels;
+        size +=
+            Common::AlignUp(splitter_info_size * params.splitter_count, info_field_alignment_size);
+        size += Common::AlignUp(splitter_destination_data_size * params.num_splitter_send_channels,
+                                info_field_alignment_size);
+
+        return size;
+    };
+
+    // Calculates the part of the size related to the upsampler info.
+    const auto calculate_upsampler_info_size =
+        [](const AudioCommon::AudioRendererParameter& params) {
+            constexpr u64 upsampler_info_size = 0x280;
+            // Yes, using the buffer size over info alignment size is intentional here.
+            return Common::AlignUp(upsampler_info_size *
+                                       (u64{params.submix_count} + params.sink_count),
+                                   buffer_alignment_size);
+        };
+
+    // Calculates the part of the size related to effect info.
+    const auto calculate_effect_info_size = [](const AudioCommon::AudioRendererParameter& params) {
+        constexpr u64 effect_info_size = 0x2B0;
+        return Common::AlignUp(effect_info_size * params.effect_count, info_field_alignment_size);
+    };
+
+    // Calculates the part of the size related to audio sink info.
+    const auto calculate_sink_info_size = [](const AudioCommon::AudioRendererParameter& params) {
+        const u64 sink_info_size = 0x170;
+        return Common::AlignUp(sink_info_size * params.sink_count, info_field_alignment_size);
+    };
+
+    // Calculates the part of the size related to voice state info.
+    const auto calculate_voice_state_size = [](const AudioCommon::AudioRendererParameter& params) {
+        const u64 voice_state_size = 0x100;
+        const u64 additional_size = buffer_alignment_size - 1;
+        return Common::AlignUp(voice_state_size * params.voice_count + additional_size,
+                               info_field_alignment_size);
+    };
+
+    // Calculates the part of the size related to performance statistics.
+    const auto calculate_perf_size = [](const AudioCommon::AudioRendererParameter& params) {
+        // Extra size value appended to the end of the calculation.
+        constexpr u64 appended = 128;
+
+        // Whether or not we assume the newer version of performance metrics data structures.
+        const bool is_v2 =
+            IsFeatureSupported(AudioFeatures::PerformanceMetricsVersion2, params.revision);
+
+        // Data structure sizes
+        constexpr u64 perf_statistics_size = 0x0C;
+        const u64 header_size = is_v2 ? 0x30 : 0x18;
+        const u64 entry_size = is_v2 ? 0x18 : 0x10;
+        const u64 detail_size = is_v2 ? 0x18 : 0x10;
+
+        const u64 entry_count = CalculateNumPerformanceEntries(params);
+        const u64 size_per_frame =
+            header_size + (entry_size * entry_count) + (detail_size * max_perf_detail_entries);
+
+        u64 size = 0;
+        size += Common::AlignUp(size_per_frame * params.performance_frame_count + 1,
+                                buffer_alignment_size);
+        size += Common::AlignUp(perf_statistics_size, buffer_alignment_size);
+        size += appended;
+        return size;
+    };
+
+    // Calculates the part of the size that relates to the audio command buffer.
+    const auto calculate_command_buffer_size =
+        [](const AudioCommon::AudioRendererParameter& params) {
+            constexpr u64 alignment = (buffer_alignment_size - 1) * 2;
+
+            if (!IsFeatureSupported(AudioFeatures::VariadicCommandBuffer, params.revision)) {
+                constexpr u64 command_buffer_size = 0x18000;
+
+                return command_buffer_size + alignment;
+            }
+
+            // When the variadic command buffer is supported, this means
+            // the command generator for the audio renderer can issue commands
+            // that are (as one would expect), variable in size. So what we need to do
+            // is determine the maximum possible size for a few command data structures
+            // then multiply them by the amount of present commands indicated by the given
+            // respective audio parameters.
+
+            constexpr u64 max_biquad_filters = 2;
+            constexpr u64 max_mix_buffers = 24;
+
+            constexpr u64 biquad_filter_command_size = 0x2C;
+
+            constexpr u64 depop_mix_command_size = 0x24;
+            constexpr u64 depop_setup_command_size = 0x50;
+
+            constexpr u64 effect_command_max_size = 0x540;
+
+            constexpr u64 mix_command_size = 0x1C;
+            constexpr u64 mix_ramp_command_size = 0x24;
+            constexpr u64 mix_ramp_grouped_command_size = 0x13C;
+
+            constexpr u64 perf_command_size = 0x28;
+
+            constexpr u64 sink_command_size = 0x130;
+
+            constexpr u64 submix_command_max_size =
+                depop_mix_command_size + (mix_command_size * max_mix_buffers) * max_mix_buffers;
+
+            constexpr u64 volume_command_size = 0x1C;
+            constexpr u64 volume_ramp_command_size = 0x20;
+
+            constexpr u64 voice_biquad_filter_command_size =
+                biquad_filter_command_size * max_biquad_filters;
+            constexpr u64 voice_data_command_size = 0x9C;
+            const u64 voice_command_max_size =
+                (params.splitter_count * depop_setup_command_size) +
+                (voice_data_command_size + voice_biquad_filter_command_size +
+                 volume_ramp_command_size + mix_ramp_grouped_command_size);
+
+            // Now calculate the individual elements that comprise the size and add them together.
+            const u64 effect_commands_size = params.effect_count * effect_command_max_size;
+
+            const u64 final_mix_commands_size =
+                depop_mix_command_size + volume_command_size * max_mix_buffers;
+
+            const u64 perf_commands_size =
+                perf_command_size *
+                (CalculateNumPerformanceEntries(params) + max_perf_detail_entries);
+
+            const u64 sink_commands_size = params.sink_count * sink_command_size;
+
+            const u64 splitter_commands_size =
+                params.num_splitter_send_channels * max_mix_buffers * mix_ramp_command_size;
+
+            const u64 submix_commands_size = params.submix_count * submix_command_max_size;
+
+            const u64 voice_commands_size = params.voice_count * voice_command_max_size;
+
+            return effect_commands_size + final_mix_commands_size + perf_commands_size +
+                   sink_commands_size + splitter_commands_size + submix_commands_size +
+                   voice_commands_size + alignment;
+        };
+
+    IPC::RequestParser rp{ctx};
+    const auto params = rp.PopRaw<AudioCommon::AudioRendererParameter>();
+
+    u64 size = 0;
+    size += calculate_mix_buffer_sizes(params);
+    size += calculate_mix_info_size(params);
+    size += calculate_voice_info_size(params);
+    size += upsampler_manager_size;
+    size += calculate_memory_pools_size(params);
+    size += calculate_splitter_context_size(params);
+
+    size = Common::AlignUp(size, buffer_alignment_size);
+
+    size += calculate_upsampler_info_size(params);
+    size += calculate_effect_info_size(params);
+    size += calculate_sink_info_size(params);
+    size += calculate_voice_state_size(params);
+    size += calculate_perf_size(params);
+    size += calculate_command_buffer_size(params);
+
+    // finally, 4KB page align the size, and we're done.
+    size = Common::AlignUp(size, 4096);
+
+    IPC::ResponseBuilder rb{ctx, 4};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push<u64>(size);
+
+    LOG_DEBUG(Service_Audio, "buffer_size=0x{:X}", size);
+}
+
+void AudRenU::GetAudioDeviceService(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const u64 aruid = rp.Pop<u64>();
+
+    LOG_DEBUG(Service_Audio, "called. aruid={:016X}", aruid);
+
+    // Revisionless variant of GetAudioDeviceServiceWithRevisionInfo that
+    // always assumes the initial release revision (REV1).
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IAudioDevice>(system, Common::MakeMagic('R', 'E', 'V', '1'));
+}
+
+void AudRenU::OpenAudioRendererAuto(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_Audio, "called");
+
+    OpenAudioRendererImpl(ctx);
+}
+
+void AudRenU::GetAudioDeviceServiceWithRevisionInfo(Kernel::HLERequestContext& ctx) {
+    struct Parameters {
+        u32 revision;
+        u64 aruid;
+    };
+
+    IPC::RequestParser rp{ctx};
+    const auto [revision, aruid] = rp.PopRaw<Parameters>();
+
+    LOG_DEBUG(Service_Audio, "called. revision={:08X}, aruid={:016X}", revision, aruid);
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IAudioDevice>(system, revision);
+}
+
+void AudRenU::OpenAudioRendererImpl(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto params = rp.PopRaw<AudioCommon::AudioRendererParameter>();
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IAudioRenderer>(system, params, audren_instance_count++);
+}
+
+bool IsFeatureSupported(AudioFeatures feature, u32_le revision) {
+    // Byte swap
+    const u32_be version_num = revision - Common::MakeMagic('R', 'E', 'V', '0');
+
+    switch (feature) {
+    case AudioFeatures::AudioUSBDeviceOutput:
+        return version_num >= 4U;
+    case AudioFeatures::Splitter:
+        return version_num >= 2U;
+    case AudioFeatures::PerformanceMetricsVersion2:
+    case AudioFeatures::VariadicCommandBuffer:
+        return version_num >= 5U;
+    default:
+        return false;
+    }
+}
+
+} // namespace Service::Audio

src/core/hle/service/audio/audren_u.h

@@ -0,0 +1,47 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class HLERequestContext;
+}
+
+namespace Service::Audio {
+
+class AudRenU final : public ServiceFramework<AudRenU> {
+public:
+    explicit AudRenU(Core::System& system_);
+    ~AudRenU() override;
+
+private:
+    void OpenAudioRenderer(Kernel::HLERequestContext& ctx);
+    void GetAudioRendererWorkBufferSize(Kernel::HLERequestContext& ctx);
+    void GetAudioDeviceService(Kernel::HLERequestContext& ctx);
+    void OpenAudioRendererAuto(Kernel::HLERequestContext& ctx);
+    void GetAudioDeviceServiceWithRevisionInfo(Kernel::HLERequestContext& ctx);
+
+    void OpenAudioRendererImpl(Kernel::HLERequestContext& ctx);
+
+    std::size_t audren_instance_count = 0;
+};
+
+// Describes a particular audio feature that may be supported in a particular revision.
+enum class AudioFeatures : u32 {
+    AudioUSBDeviceOutput,
+    Splitter,
+    PerformanceMetricsVersion2,
+    VariadicCommandBuffer,
+};
+
+// Tests if a particular audio feature is supported with a given audio revision.
+bool IsFeatureSupported(AudioFeatures feature, u32_le revision);
+
+} // namespace Service::Audio

src/core/hle/service/audio/codecctl.cpp

@@ -0,0 +1,30 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/audio/codecctl.h"
+
+namespace Service::Audio {
+
+CodecCtl::CodecCtl(Core::System& system_) : ServiceFramework{system_, "codecctl"} {
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "InitializeCodecController"},
+        {1, nullptr, "FinalizeCodecController"},
+        {2, nullptr, "SleepCodecController"},
+        {3, nullptr, "WakeCodecController"},
+        {4, nullptr, "SetCodecVolume"},
+        {5, nullptr, "GetCodecVolumeMax"},
+        {6, nullptr, "GetCodecVolumeMin"},
+        {7, nullptr, "SetCodecActiveTarget"},
+        {8, nullptr, "GetCodecActiveTarget"},
+        {9, nullptr, "BindCodecHeadphoneMicJackInterrupt"},
+        {10, nullptr, "IsCodecHeadphoneMicJackInserted"},
+        {11, nullptr, "ClearCodecHeadphoneMicJackInterrupt"},
+        {12, nullptr, "IsCodecDeviceRequested"},
+    };
+    RegisterHandlers(functions);
+}
+
+CodecCtl::~CodecCtl() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/codecctl.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class CodecCtl final : public ServiceFramework<CodecCtl> {
+public:
+    explicit CodecCtl(Core::System& system_);
+    ~CodecCtl() override;
+};
+
+} // namespace Service::Audio

src/core/hle/service/audio/errors.h

@@ -0,0 +1,15 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/result.h"
+
+namespace Service::Audio {
+
+constexpr ResultCode ERR_OPERATION_FAILED{ErrorModule::Audio, 2};
+constexpr ResultCode ERR_BUFFER_COUNT_EXCEEDED{ErrorModule::Audio, 8};
+constexpr ResultCode ERR_NOT_SUPPORTED{ErrorModule::Audio, 513};
+
+} // namespace Service::Audio

src/core/hle/service/audio/hwopus.cpp

@@ -0,0 +1,306 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <chrono>
+#include <cstring>
+#include <memory>
+#include <vector>
+
+#include <opus.h>
+#include <opus_multistream.h>
+
+#include "common/assert.h"
+#include "common/logging/log.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/service/audio/hwopus.h"
+
+namespace Service::Audio {
+namespace {
+struct OpusDeleter {
+    void operator()(OpusMSDecoder* ptr) const {
+        opus_multistream_decoder_destroy(ptr);
+    }
+};
+
+using OpusDecoderPtr = std::unique_ptr<OpusMSDecoder, OpusDeleter>;
+
+struct OpusPacketHeader {
+    // Packet size in bytes.
+    u32_be size;
+    // Indicates the final range of the codec's entropy coder.
+    u32_be final_range;
+};
+static_assert(sizeof(OpusPacketHeader) == 0x8, "OpusHeader is an invalid size");
+
+class OpusDecoderState {
+public:
+    /// Describes extra behavior that may be asked of the decoding context.
+    enum class ExtraBehavior {
+        /// No extra behavior.
+        None,
+
+        /// Resets the decoder context back to a freshly initialized state.
+        ResetContext,
+    };
+
+    enum class PerfTime {
+        Disabled,
+        Enabled,
+    };
+
+    explicit OpusDecoderState(OpusDecoderPtr decoder, u32 sample_rate, u32 channel_count)
+        : decoder{std::move(decoder)}, sample_rate{sample_rate}, channel_count{channel_count} {}
+
+    // Decodes interleaved Opus packets. Optionally allows reporting time taken to
+    // perform the decoding, as well as any relevant extra behavior.
+    void DecodeInterleaved(Kernel::HLERequestContext& ctx, PerfTime perf_time,
+                           ExtraBehavior extra_behavior) {
+        if (perf_time == PerfTime::Disabled) {
+            DecodeInterleavedHelper(ctx, nullptr, extra_behavior);
+        } else {
+            u64 performance = 0;
+            DecodeInterleavedHelper(ctx, &performance, extra_behavior);
+        }
+    }
+
+private:
+    void DecodeInterleavedHelper(Kernel::HLERequestContext& ctx, u64* performance,
+                                 ExtraBehavior extra_behavior) {
+        u32 consumed = 0;
+        u32 sample_count = 0;
+        std::vector<opus_int16> samples(ctx.GetWriteBufferSize() / sizeof(opus_int16));
+
+        if (extra_behavior == ExtraBehavior::ResetContext) {
+            ResetDecoderContext();
+        }
+
+        if (!DecodeOpusData(consumed, sample_count, ctx.ReadBuffer(), samples, performance)) {
+            LOG_ERROR(Audio, "Failed to decode opus data");
+            IPC::ResponseBuilder rb{ctx, 2};
+            // TODO(ogniK): Use correct error code
+            rb.Push(RESULT_UNKNOWN);
+            return;
+        }
+
+        const u32 param_size = performance != nullptr ? 6 : 4;
+        IPC::ResponseBuilder rb{ctx, param_size};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u32>(consumed);
+        rb.Push<u32>(sample_count);
+        if (performance) {
+            rb.Push<u64>(*performance);
+        }
+        ctx.WriteBuffer(samples);
+    }
+
+    bool DecodeOpusData(u32& consumed, u32& sample_count, const std::vector<u8>& input,
+                        std::vector<opus_int16>& output, u64* out_performance_time) const {
+        const auto start_time = std::chrono::high_resolution_clock::now();
+        const std::size_t raw_output_sz = output.size() * sizeof(opus_int16);
+        if (sizeof(OpusPacketHeader) > input.size()) {
+            LOG_ERROR(Audio, "Input is smaller than the header size, header_sz={}, input_sz={}",
+                      sizeof(OpusPacketHeader), input.size());
+            return false;
+        }
+
+        OpusPacketHeader hdr{};
+        std::memcpy(&hdr, input.data(), sizeof(OpusPacketHeader));
+        if (sizeof(OpusPacketHeader) + static_cast<u32>(hdr.size) > input.size()) {
+            LOG_ERROR(Audio, "Input does not fit in the opus header size. data_sz={}, input_sz={}",
+                      sizeof(OpusPacketHeader) + static_cast<u32>(hdr.size), input.size());
+            return false;
+        }
+
+        const auto frame = input.data() + sizeof(OpusPacketHeader);
+        const auto decoded_sample_count = opus_packet_get_nb_samples(
+            frame, static_cast<opus_int32>(input.size() - sizeof(OpusPacketHeader)),
+            static_cast<opus_int32>(sample_rate));
+        if (decoded_sample_count * channel_count * sizeof(u16) > raw_output_sz) {
+            LOG_ERROR(
+                Audio,
+                "Decoded data does not fit into the output data, decoded_sz={}, raw_output_sz={}",
+                decoded_sample_count * channel_count * sizeof(u16), raw_output_sz);
+            return false;
+        }
+
+        const int frame_size = (static_cast<int>(raw_output_sz / sizeof(s16) / channel_count));
+        const auto out_sample_count =
+            opus_multistream_decode(decoder.get(), frame, hdr.size, output.data(), frame_size, 0);
+        if (out_sample_count < 0) {
+            LOG_ERROR(Audio,
+                      "Incorrect sample count received from opus_decode, "
+                      "output_sample_count={}, frame_size={}, data_sz_from_hdr={}",
+                      out_sample_count, frame_size, static_cast<u32>(hdr.size));
+            return false;
+        }
+
+        const auto end_time = std::chrono::high_resolution_clock::now() - start_time;
+        sample_count = out_sample_count;
+        consumed = static_cast<u32>(sizeof(OpusPacketHeader) + hdr.size);
+        if (out_performance_time != nullptr) {
+            *out_performance_time =
+                std::chrono::duration_cast<std::chrono::milliseconds>(end_time).count();
+        }
+
+        return true;
+    }
+
+    void ResetDecoderContext() {
+        ASSERT(decoder != nullptr);
+
+        opus_multistream_decoder_ctl(decoder.get(), OPUS_RESET_STATE);
+    }
+
+    OpusDecoderPtr decoder;
+    u32 sample_rate;
+    u32 channel_count;
+};
+
+class IHardwareOpusDecoderManager final : public ServiceFramework<IHardwareOpusDecoderManager> {
+public:
+    explicit IHardwareOpusDecoderManager(Core::System& system_, OpusDecoderState decoder_state)
+        : ServiceFramework{system_, "IHardwareOpusDecoderManager"}, decoder_state{
+                                                                        std::move(decoder_state)} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IHardwareOpusDecoderManager::DecodeInterleavedOld, "DecodeInterleavedOld"},
+            {1, nullptr, "SetContext"},
+            {2, nullptr, "DecodeInterleavedForMultiStreamOld"},
+            {3, nullptr, "SetContextForMultiStream"},
+            {4, &IHardwareOpusDecoderManager::DecodeInterleavedWithPerfOld, "DecodeInterleavedWithPerfOld"},
+            {5, nullptr, "DecodeInterleavedForMultiStreamWithPerfOld"},
+            {6, &IHardwareOpusDecoderManager::DecodeInterleaved, "DecodeInterleavedWithPerfAndResetOld"},
+            {7, nullptr, "DecodeInterleavedForMultiStreamWithPerfAndResetOld"},
+            {8, &IHardwareOpusDecoderManager::DecodeInterleaved, "DecodeInterleaved"},
+            {9, nullptr, "DecodeInterleavedForMultiStream"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void DecodeInterleavedOld(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Audio, "called");
+
+        decoder_state.DecodeInterleaved(ctx, OpusDecoderState::PerfTime::Disabled,
+                                        OpusDecoderState::ExtraBehavior::None);
+    }
+
+    void DecodeInterleavedWithPerfOld(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Audio, "called");
+
+        decoder_state.DecodeInterleaved(ctx, OpusDecoderState::PerfTime::Enabled,
+                                        OpusDecoderState::ExtraBehavior::None);
+    }
+
+    void DecodeInterleaved(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Audio, "called");
+
+        IPC::RequestParser rp{ctx};
+        const auto extra_behavior = rp.Pop<bool>() ? OpusDecoderState::ExtraBehavior::ResetContext
+                                                   : OpusDecoderState::ExtraBehavior::None;
+
+        decoder_state.DecodeInterleaved(ctx, OpusDecoderState::PerfTime::Enabled, extra_behavior);
+    }
+
+    OpusDecoderState decoder_state;
+};
+
+std::size_t WorkerBufferSize(u32 channel_count) {
+    ASSERT_MSG(channel_count == 1 || channel_count == 2, "Invalid channel count");
+    constexpr int num_streams = 1;
+    const int num_stereo_streams = channel_count == 2 ? 1 : 0;
+    return opus_multistream_decoder_get_size(num_streams, num_stereo_streams);
+}
+
+// Creates the mapping table that maps the input channels to the particular
+// output channels. In the stereo case, we map the left and right input channels
+// to the left and right output channels respectively.
+//
+// However, in the monophonic case, we only map the one available channel
+// to the sole output channel. We specify 255 for the would-be right channel
+// as this is a special value defined by Opus to indicate to the decoder to
+// ignore that channel.
+std::array<u8, 2> CreateMappingTable(u32 channel_count) {
+    if (channel_count == 2) {
+        return {{0, 1}};
+    }
+
+    return {{0, 255}};
+}
+} // Anonymous namespace
+
+void HwOpus::GetWorkBufferSize(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto sample_rate = rp.Pop<u32>();
+    const auto channel_count = rp.Pop<u32>();
+
+    LOG_DEBUG(Audio, "called with sample_rate={}, channel_count={}", sample_rate, channel_count);
+
+    ASSERT_MSG(sample_rate == 48000 || sample_rate == 24000 || sample_rate == 16000 ||
+                   sample_rate == 12000 || sample_rate == 8000,
+               "Invalid sample rate");
+    ASSERT_MSG(channel_count == 1 || channel_count == 2, "Invalid channel count");
+
+    const u32 worker_buffer_sz = static_cast<u32>(WorkerBufferSize(channel_count));
+    LOG_DEBUG(Audio, "worker_buffer_sz={}", worker_buffer_sz);
+
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push<u32>(worker_buffer_sz);
+}
+
+void HwOpus::OpenOpusDecoder(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto sample_rate = rp.Pop<u32>();
+    const auto channel_count = rp.Pop<u32>();
+    const auto buffer_sz = rp.Pop<u32>();
+
+    LOG_DEBUG(Audio, "called sample_rate={}, channel_count={}, buffer_size={}", sample_rate,
+              channel_count, buffer_sz);
+
+    ASSERT_MSG(sample_rate == 48000 || sample_rate == 24000 || sample_rate == 16000 ||
+                   sample_rate == 12000 || sample_rate == 8000,
+               "Invalid sample rate");
+    ASSERT_MSG(channel_count == 1 || channel_count == 2, "Invalid channel count");
+
+    const std::size_t worker_sz = WorkerBufferSize(channel_count);
+    ASSERT_MSG(buffer_sz >= worker_sz, "Worker buffer too large");
+
+    const int num_stereo_streams = channel_count == 2 ? 1 : 0;
+    const auto mapping_table = CreateMappingTable(channel_count);
+
+    int error = 0;
+    OpusDecoderPtr decoder{
+        opus_multistream_decoder_create(sample_rate, static_cast<int>(channel_count), 1,
+                                        num_stereo_streams, mapping_table.data(), &error)};
+    if (error != OPUS_OK || decoder == nullptr) {
+        LOG_ERROR(Audio, "Failed to create Opus decoder (error={}).", error);
+        IPC::ResponseBuilder rb{ctx, 2};
+        // TODO(ogniK): Use correct error code
+        rb.Push(RESULT_UNKNOWN);
+        return;
+    }
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IHardwareOpusDecoderManager>(
+        system, OpusDecoderState{std::move(decoder), sample_rate, channel_count});
+}
+
+HwOpus::HwOpus(Core::System& system_) : ServiceFramework{system_, "hwopus"} {
+    static const FunctionInfo functions[] = {
+        {0, &HwOpus::OpenOpusDecoder, "OpenOpusDecoder"},
+        {1, &HwOpus::GetWorkBufferSize, "GetWorkBufferSize"},
+        {2, nullptr, "OpenOpusDecoderForMultiStream"},
+        {3, nullptr, "GetWorkBufferSizeForMultiStream"},
+    };
+    RegisterHandlers(functions);
+}
+
+HwOpus::~HwOpus() = default;
+
+} // namespace Service::Audio

src/core/hle/service/audio/hwopus.h

@@ -0,0 +1,25 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Audio {
+
+class HwOpus final : public ServiceFramework<HwOpus> {
+public:
+    explicit HwOpus(Core::System& system_);
+    ~HwOpus() override;
+
+private:
+    void OpenOpusDecoder(Kernel::HLERequestContext& ctx);
+    void GetWorkBufferSize(Kernel::HLERequestContext& ctx);
+};
+
+} // namespace Service::Audio

src/core/hle/service/bcat/backend/backend.cpp

@@ -0,0 +1,136 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/hex_util.h"
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/hle/lock.h"
+#include "core/hle/service/bcat/backend/backend.h"
+
+namespace Service::BCAT {
+
+ProgressServiceBackend::ProgressServiceBackend(Kernel::KernelCore& kernel,
+                                               std::string_view event_name) {
+    event = Kernel::WritableEvent::CreateEventPair(
+        kernel, std::string("ProgressServiceBackend:UpdateEvent:").append(event_name));
+}
+
+std::shared_ptr<Kernel::ReadableEvent> ProgressServiceBackend::GetEvent() const {
+    return event.readable;
+}
+
+DeliveryCacheProgressImpl& ProgressServiceBackend::GetImpl() {
+    return impl;
+}
+
+void ProgressServiceBackend::SetNeedHLELock(bool need) {
+    need_hle_lock = need;
+}
+
+void ProgressServiceBackend::SetTotalSize(u64 size) {
+    impl.total_bytes = size;
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::StartConnecting() {
+    impl.status = DeliveryCacheProgressImpl::Status::Connecting;
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::StartProcessingDataList() {
+    impl.status = DeliveryCacheProgressImpl::Status::ProcessingDataList;
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::StartDownloadingFile(std::string_view dir_name,
+                                                  std::string_view file_name, u64 file_size) {
+    impl.status = DeliveryCacheProgressImpl::Status::Downloading;
+    impl.current_downloaded_bytes = 0;
+    impl.current_total_bytes = file_size;
+    std::memcpy(impl.current_directory.data(), dir_name.data(),
+                std::min<u64>(dir_name.size(), 0x31ull));
+    std::memcpy(impl.current_file.data(), file_name.data(),
+                std::min<u64>(file_name.size(), 0x31ull));
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::UpdateFileProgress(u64 downloaded) {
+    impl.current_downloaded_bytes = downloaded;
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::FinishDownloadingFile() {
+    impl.total_downloaded_bytes += impl.current_total_bytes;
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::CommitDirectory(std::string_view dir_name) {
+    impl.status = DeliveryCacheProgressImpl::Status::Committing;
+    impl.current_file.fill(0);
+    impl.current_downloaded_bytes = 0;
+    impl.current_total_bytes = 0;
+    std::memcpy(impl.current_directory.data(), dir_name.data(),
+                std::min<u64>(dir_name.size(), 0x31ull));
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::FinishDownload(ResultCode result) {
+    impl.total_downloaded_bytes = impl.total_bytes;
+    impl.status = DeliveryCacheProgressImpl::Status::Done;
+    impl.result = result;
+    SignalUpdate();
+}
+
+void ProgressServiceBackend::SignalUpdate() const {
+    if (need_hle_lock) {
+        std::lock_guard lock(HLE::g_hle_lock);
+        event.writable->Signal();
+    } else {
+        event.writable->Signal();
+    }
+}
+
+Backend::Backend(DirectoryGetter getter) : dir_getter(std::move(getter)) {}
+
+Backend::~Backend() = default;
+
+NullBackend::NullBackend(DirectoryGetter getter) : Backend(std::move(getter)) {}
+
+NullBackend::~NullBackend() = default;
+
+bool NullBackend::Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, build_id={:016X}", title.title_id,
+              title.build_id);
+
+    progress.FinishDownload(RESULT_SUCCESS);
+    return true;
+}
+
+bool NullBackend::SynchronizeDirectory(TitleIDVersion title, std::string name,
+                                       ProgressServiceBackend& progress) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, build_id={:016X}, name={}", title.title_id,
+              title.build_id, name);
+
+    progress.FinishDownload(RESULT_SUCCESS);
+    return true;
+}
+
+bool NullBackend::Clear(u64 title_id) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
+
+    return true;
+}
+
+void NullBackend::SetPassphrase(u64 title_id, const Passphrase& passphrase) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, passphrase={}", title_id,
+              Common::HexToString(passphrase));
+}
+
+std::optional<std::vector<u8>> NullBackend::GetLaunchParameter(TitleIDVersion title) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, build_id={:016X}", title.title_id,
+              title.build_id);
+    return std::nullopt;
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/backend/backend.h

@@ -0,0 +1,158 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <functional>
+#include <optional>
+#include <string>
+#include <string_view>
+
+#include "common/common_types.h"
+#include "core/file_sys/vfs_types.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/result.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KernelCore;
+}
+
+namespace Service::BCAT {
+
+struct DeliveryCacheProgressImpl;
+
+using DirectoryGetter = std::function<FileSys::VirtualDir(u64)>;
+using Passphrase = std::array<u8, 0x20>;
+
+struct TitleIDVersion {
+    u64 title_id;
+    u64 build_id;
+};
+
+using DirectoryName = std::array<char, 0x20>;
+using FileName = std::array<char, 0x20>;
+
+struct DeliveryCacheProgressImpl {
+    enum class Status : s32 {
+        None = 0x0,
+        Queued = 0x1,
+        Connecting = 0x2,
+        ProcessingDataList = 0x3,
+        Downloading = 0x4,
+        Committing = 0x5,
+        Done = 0x9,
+    };
+
+    Status status;
+    ResultCode result = RESULT_SUCCESS;
+    DirectoryName current_directory;
+    FileName current_file;
+    s64 current_downloaded_bytes; ///< Bytes downloaded on current file.
+    s64 current_total_bytes;      ///< Bytes total on current file.
+    s64 total_downloaded_bytes;   ///< Bytes downloaded on overall download.
+    s64 total_bytes;              ///< Bytes total on overall download.
+    INSERT_PADDING_BYTES(
+        0x198); ///< Appears to be unused in official code, possibly reserved for future use.
+};
+static_assert(sizeof(DeliveryCacheProgressImpl) == 0x200,
+              "DeliveryCacheProgressImpl has incorrect size.");
+
+// A class to manage the signalling to the game about BCAT download progress.
+// Some of this class is implemented in module.cpp to avoid exposing the implementation structure.
+class ProgressServiceBackend {
+    friend class IBcatService;
+
+public:
+    // Clients should call this with true if any of the functions are going to be called from a
+    // non-HLE thread and this class need to lock the hle mutex. (default is false)
+    void SetNeedHLELock(bool need);
+
+    // Sets the number of bytes total in the entire download.
+    void SetTotalSize(u64 size);
+
+    // Notifies the application that the backend has started connecting to the server.
+    void StartConnecting();
+    // Notifies the application that the backend has begun accumulating and processing metadata.
+    void StartProcessingDataList();
+
+    // Notifies the application that a file is starting to be downloaded.
+    void StartDownloadingFile(std::string_view dir_name, std::string_view file_name, u64 file_size);
+    // Updates the progress of the current file to the size passed.
+    void UpdateFileProgress(u64 downloaded);
+    // Notifies the application that the current file has completed download.
+    void FinishDownloadingFile();
+
+    // Notifies the application that all files in this directory have completed and are being
+    // finalized.
+    void CommitDirectory(std::string_view dir_name);
+
+    // Notifies the application that the operation completed with result code result.
+    void FinishDownload(ResultCode result);
+
+private:
+    explicit ProgressServiceBackend(Kernel::KernelCore& kernel, std::string_view event_name);
+
+    std::shared_ptr<Kernel::ReadableEvent> GetEvent() const;
+    DeliveryCacheProgressImpl& GetImpl();
+
+    void SignalUpdate() const;
+
+    DeliveryCacheProgressImpl impl{};
+    Kernel::EventPair event;
+    bool need_hle_lock = false;
+};
+
+// A class representing an abstract backend for BCAT functionality.
+class Backend {
+public:
+    explicit Backend(DirectoryGetter getter);
+    virtual ~Backend();
+
+    // Called when the backend is needed to synchronize the data for the game with title ID and
+    // version in title. A ProgressServiceBackend object is provided to alert the application of
+    // status.
+    virtual bool Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) = 0;
+    // Very similar to Synchronize, but only for the directory provided. Backends should not alter
+    // the data for any other directories.
+    virtual bool SynchronizeDirectory(TitleIDVersion title, std::string name,
+                                      ProgressServiceBackend& progress) = 0;
+
+    // Removes all cached data associated with title id provided.
+    virtual bool Clear(u64 title_id) = 0;
+
+    // Sets the BCAT Passphrase to be used with the associated title ID.
+    virtual void SetPassphrase(u64 title_id, const Passphrase& passphrase) = 0;
+
+    // Gets the launch parameter used by AM associated with the title ID and version provided.
+    virtual std::optional<std::vector<u8>> GetLaunchParameter(TitleIDVersion title) = 0;
+
+protected:
+    DirectoryGetter dir_getter;
+};
+
+// A backend of BCAT that provides no operation.
+class NullBackend : public Backend {
+public:
+    explicit NullBackend(DirectoryGetter getter);
+    ~NullBackend() override;
+
+    bool Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) override;
+    bool SynchronizeDirectory(TitleIDVersion title, std::string name,
+                              ProgressServiceBackend& progress) override;
+
+    bool Clear(u64 title_id) override;
+
+    void SetPassphrase(u64 title_id, const Passphrase& passphrase) override;
+
+    std::optional<std::vector<u8>> GetLaunchParameter(TitleIDVersion title) override;
+};
+
+std::unique_ptr<Backend> CreateBackendFromSettings(Core::System& system, DirectoryGetter getter);
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/backend/boxcat.cpp

@@ -0,0 +1,521 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <fmt/ostream.h>
+#include <httplib.h>
+#include <mbedtls/sha256.h>
+#include <nlohmann/json.hpp>
+#include "common/hex_util.h"
+#include "common/logging/backend.h"
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/file_sys/vfs.h"
+#include "core/file_sys/vfs_libzip.h"
+#include "core/file_sys/vfs_vector.h"
+#include "core/frontend/applets/error.h"
+#include "core/hle/service/am/applets/applets.h"
+#include "core/hle/service/bcat/backend/boxcat.h"
+#include "core/settings.h"
+
+namespace Service::BCAT {
+namespace {
+
+// Prevents conflicts with windows macro called CreateFile
+FileSys::VirtualFile VfsCreateFileWrap(FileSys::VirtualDir dir, std::string_view name) {
+    return dir->CreateFile(name);
+}
+
+// Prevents conflicts with windows macro called DeleteFile
+bool VfsDeleteFileWrap(FileSys::VirtualDir dir, std::string_view name) {
+    return dir->DeleteFile(name);
+}
+
+constexpr ResultCode ERROR_GENERAL_BCAT_FAILURE{ErrorModule::BCAT, 1};
+
+constexpr char BOXCAT_HOSTNAME[] = "api.yuzu-emu.org";
+
+// Formatted using fmt with arg[0] = hex title id
+constexpr char BOXCAT_PATHNAME_DATA[] = "/game-assets/{:016X}/boxcat";
+constexpr char BOXCAT_PATHNAME_LAUNCHPARAM[] = "/game-assets/{:016X}/launchparam";
+
+constexpr char BOXCAT_PATHNAME_EVENTS[] = "/game-assets/boxcat/events";
+
+constexpr char BOXCAT_API_VERSION[] = "1";
+constexpr char BOXCAT_CLIENT_TYPE[] = "yuzu";
+
+// HTTP status codes for Boxcat
+enum class ResponseStatus {
+    Ok = 200,               ///< Operation completed successfully.
+    BadClientVersion = 301, ///< The Boxcat-Client-Version doesn't match the server.
+    NoUpdate = 304,         ///< The digest provided would match the new data, no need to update.
+    NoMatchTitleId = 404,   ///< The title ID provided doesn't have a boxcat implementation.
+    NoMatchBuildId = 406,   ///< The build ID provided is blacklisted (potentially because of format
+                            ///< issues or whatnot) and has no data.
+};
+
+enum class DownloadResult {
+    Success = 0,
+    NoResponse,
+    GeneralWebError,
+    NoMatchTitleId,
+    NoMatchBuildId,
+    InvalidContentType,
+    GeneralFSError,
+    BadClientVersion,
+};
+
+constexpr std::array<const char*, 8> DOWNLOAD_RESULT_LOG_MESSAGES{
+    "Success",
+    "There was no response from the server.",
+    "There was a general web error code returned from the server.",
+    "The title ID of the current game doesn't have a boxcat implementation. If you believe an "
+    "implementation should be added, contact yuzu support.",
+    "The build ID of the current version of the game is marked as incompatible with the current "
+    "BCAT distribution. Try upgrading or downgrading your game version or contacting yuzu support.",
+    "The content type of the web response was invalid.",
+    "There was a general filesystem error while saving the zip file.",
+    "The server is either too new or too old to serve the request. Try using the latest version of "
+    "an official release of yuzu.",
+};
+
+std::ostream& operator<<(std::ostream& os, DownloadResult result) {
+    return os << DOWNLOAD_RESULT_LOG_MESSAGES.at(static_cast<std::size_t>(result));
+}
+
+constexpr u32 PORT = 443;
+constexpr u32 TIMEOUT_SECONDS = 30;
+[[maybe_unused]] constexpr u64 VFS_COPY_BLOCK_SIZE = 1ULL << 24; // 4MB
+
+std::string GetBINFilePath(u64 title_id) {
+    return fmt::format("{}bcat/{:016X}/launchparam.bin",
+                       Common::FS::GetUserPath(Common::FS::UserPath::CacheDir), title_id);
+}
+
+std::string GetZIPFilePath(u64 title_id) {
+    return fmt::format("{}bcat/{:016X}/data.zip",
+                       Common::FS::GetUserPath(Common::FS::UserPath::CacheDir), title_id);
+}
+
+// If the error is something the user should know about (build ID mismatch, bad client version),
+// display an error.
+void HandleDownloadDisplayResult(const AM::Applets::AppletManager& applet_manager,
+                                 DownloadResult res) {
+    if (res == DownloadResult::Success || res == DownloadResult::NoResponse ||
+        res == DownloadResult::GeneralWebError || res == DownloadResult::GeneralFSError ||
+        res == DownloadResult::NoMatchTitleId || res == DownloadResult::InvalidContentType) {
+        return;
+    }
+
+    const auto& frontend{applet_manager.GetAppletFrontendSet()};
+    frontend.error->ShowCustomErrorText(
+        RESULT_UNKNOWN, "There was an error while attempting to use Boxcat.",
+        DOWNLOAD_RESULT_LOG_MESSAGES[static_cast<std::size_t>(res)], [] {});
+}
+
+bool VfsRawCopyProgress(FileSys::VirtualFile src, FileSys::VirtualFile dest,
+                        std::string_view dir_name, ProgressServiceBackend& progress,
+                        std::size_t block_size = 0x1000) {
+    if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
+        return false;
+    if (!dest->Resize(src->GetSize()))
+        return false;
+
+    progress.StartDownloadingFile(dir_name, src->GetName(), src->GetSize());
+
+    std::vector<u8> temp(std::min(block_size, src->GetSize()));
+    for (std::size_t i = 0; i < src->GetSize(); i += block_size) {
+        const auto read = std::min(block_size, src->GetSize() - i);
+
+        if (src->Read(temp.data(), read, i) != read) {
+            return false;
+        }
+
+        if (dest->Write(temp.data(), read, i) != read) {
+            return false;
+        }
+
+        progress.UpdateFileProgress(i);
+    }
+
+    progress.FinishDownloadingFile();
+
+    return true;
+}
+
+bool VfsRawCopyDProgressSingle(FileSys::VirtualDir src, FileSys::VirtualDir dest,
+                               ProgressServiceBackend& progress, std::size_t block_size = 0x1000) {
+    if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
+        return false;
+
+    for (const auto& file : src->GetFiles()) {
+        const auto out_file = VfsCreateFileWrap(dest, file->GetName());
+        if (!VfsRawCopyProgress(file, out_file, src->GetName(), progress, block_size)) {
+            return false;
+        }
+    }
+    progress.CommitDirectory(src->GetName());
+
+    return true;
+}
+
+bool VfsRawCopyDProgress(FileSys::VirtualDir src, FileSys::VirtualDir dest,
+                         ProgressServiceBackend& progress, std::size_t block_size = 0x1000) {
+    if (src == nullptr || dest == nullptr || !src->IsReadable() || !dest->IsWritable())
+        return false;
+
+    for (const auto& dir : src->GetSubdirectories()) {
+        const auto out = dest->CreateSubdirectory(dir->GetName());
+        if (!VfsRawCopyDProgressSingle(dir, out, progress, block_size)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+} // Anonymous namespace
+
+class Boxcat::Client {
+public:
+    Client(std::string path, u64 title_id, u64 build_id)
+        : path(std::move(path)), title_id(title_id), build_id(build_id) {}
+
+    DownloadResult DownloadDataZip() {
+        return DownloadInternal(fmt::format(BOXCAT_PATHNAME_DATA, title_id), TIMEOUT_SECONDS,
+                                "application/zip");
+    }
+
+    DownloadResult DownloadLaunchParam() {
+        return DownloadInternal(fmt::format(BOXCAT_PATHNAME_LAUNCHPARAM, title_id),
+                                TIMEOUT_SECONDS / 3, "application/octet-stream");
+    }
+
+private:
+    DownloadResult DownloadInternal(const std::string& resolved_path, u32 timeout_seconds,
+                                    const std::string& content_type_name) {
+        if (client == nullptr) {
+            client = std::make_unique<httplib::SSLClient>(BOXCAT_HOSTNAME, PORT);
+            client->set_connection_timeout(timeout_seconds);
+            client->set_read_timeout(timeout_seconds);
+            client->set_write_timeout(timeout_seconds);
+        }
+
+        httplib::Headers headers{
+            {std::string("Game-Assets-API-Version"), std::string(BOXCAT_API_VERSION)},
+            {std::string("Boxcat-Client-Type"), std::string(BOXCAT_CLIENT_TYPE)},
+            {std::string("Game-Build-Id"), fmt::format("{:016X}", build_id)},
+        };
+
+        if (Common::FS::Exists(path)) {
+            Common::FS::IOFile file{path, "rb"};
+            if (file.IsOpen()) {
+                std::vector<u8> bytes(file.GetSize());
+                file.ReadBytes(bytes.data(), bytes.size());
+                const auto digest = DigestFile(bytes);
+                headers.insert({std::string("If-None-Match"), Common::HexToString(digest, false)});
+            }
+        }
+
+        const auto response = client->Get(resolved_path.c_str(), headers);
+        if (response == nullptr)
+            return DownloadResult::NoResponse;
+
+        if (response->status == static_cast<int>(ResponseStatus::NoUpdate))
+            return DownloadResult::Success;
+        if (response->status == static_cast<int>(ResponseStatus::BadClientVersion))
+            return DownloadResult::BadClientVersion;
+        if (response->status == static_cast<int>(ResponseStatus::NoMatchTitleId))
+            return DownloadResult::NoMatchTitleId;
+        if (response->status == static_cast<int>(ResponseStatus::NoMatchBuildId))
+            return DownloadResult::NoMatchBuildId;
+        if (response->status != static_cast<int>(ResponseStatus::Ok))
+            return DownloadResult::GeneralWebError;
+
+        const auto content_type = response->headers.find("content-type");
+        if (content_type == response->headers.end() ||
+            content_type->second.find(content_type_name) == std::string::npos) {
+            return DownloadResult::InvalidContentType;
+        }
+
+        Common::FS::CreateFullPath(path);
+        Common::FS::IOFile file{path, "wb"};
+        if (!file.IsOpen())
+            return DownloadResult::GeneralFSError;
+        if (!file.Resize(response->body.size()))
+            return DownloadResult::GeneralFSError;
+        if (file.WriteBytes(response->body.data(), response->body.size()) != response->body.size())
+            return DownloadResult::GeneralFSError;
+
+        return DownloadResult::Success;
+    }
+
+    using Digest = std::array<u8, 0x20>;
+    static Digest DigestFile(std::vector<u8> bytes) {
+        Digest out{};
+        mbedtls_sha256_ret(bytes.data(), bytes.size(), out.data(), 0);
+        return out;
+    }
+
+    std::unique_ptr<httplib::SSLClient> client;
+    std::string path;
+    u64 title_id;
+    u64 build_id;
+};
+
+Boxcat::Boxcat(AM::Applets::AppletManager& applet_manager_, DirectoryGetter getter)
+    : Backend(std::move(getter)), applet_manager{applet_manager_} {}
+
+Boxcat::~Boxcat() = default;
+
+void SynchronizeInternal(AM::Applets::AppletManager& applet_manager, DirectoryGetter dir_getter,
+                         TitleIDVersion title, ProgressServiceBackend& progress,
+                         std::optional<std::string> dir_name = {}) {
+    progress.SetNeedHLELock(true);
+
+    if (Settings::values.bcat_boxcat_local) {
+        LOG_INFO(Service_BCAT, "Boxcat using local data by override, skipping download.");
+        const auto dir = dir_getter(title.title_id);
+        if (dir)
+            progress.SetTotalSize(dir->GetSize());
+        progress.FinishDownload(RESULT_SUCCESS);
+        return;
+    }
+
+    const auto zip_path{GetZIPFilePath(title.title_id)};
+    Boxcat::Client client{zip_path, title.title_id, title.build_id};
+
+    progress.StartConnecting();
+
+    const auto res = client.DownloadDataZip();
+    if (res != DownloadResult::Success) {
+        LOG_ERROR(Service_BCAT, "Boxcat synchronization failed with error '{}'!", res);
+
+        if (res == DownloadResult::NoMatchBuildId || res == DownloadResult::NoMatchTitleId) {
+            Common::FS::Delete(zip_path);
+        }
+
+        HandleDownloadDisplayResult(applet_manager, res);
+        progress.FinishDownload(ERROR_GENERAL_BCAT_FAILURE);
+        return;
+    }
+
+    progress.StartProcessingDataList();
+
+    Common::FS::IOFile zip{zip_path, "rb"};
+    const auto size = zip.GetSize();
+    std::vector<u8> bytes(size);
+    if (!zip.IsOpen() || size == 0 || zip.ReadBytes(bytes.data(), bytes.size()) != bytes.size()) {
+        LOG_ERROR(Service_BCAT, "Boxcat failed to read ZIP file at path '{}'!", zip_path);
+        progress.FinishDownload(ERROR_GENERAL_BCAT_FAILURE);
+        return;
+    }
+
+    const auto extracted = FileSys::ExtractZIP(std::make_shared<FileSys::VectorVfsFile>(bytes));
+    if (extracted == nullptr) {
+        LOG_ERROR(Service_BCAT, "Boxcat failed to extract ZIP file!");
+        progress.FinishDownload(ERROR_GENERAL_BCAT_FAILURE);
+        return;
+    }
+
+    if (dir_name == std::nullopt) {
+        progress.SetTotalSize(extracted->GetSize());
+
+        const auto target_dir = dir_getter(title.title_id);
+        if (target_dir == nullptr || !VfsRawCopyDProgress(extracted, target_dir, progress)) {
+            LOG_ERROR(Service_BCAT, "Boxcat failed to copy extracted ZIP to target directory!");
+            progress.FinishDownload(ERROR_GENERAL_BCAT_FAILURE);
+            return;
+        }
+    } else {
+        const auto target_dir = dir_getter(title.title_id);
+        if (target_dir == nullptr) {
+            LOG_ERROR(Service_BCAT, "Boxcat failed to get directory for title ID!");
+            progress.FinishDownload(ERROR_GENERAL_BCAT_FAILURE);
+            return;
+        }
+
+        const auto target_sub = target_dir->GetSubdirectory(*dir_name);
+        const auto source_sub = extracted->GetSubdirectory(*dir_name);
+
+        progress.SetTotalSize(source_sub->GetSize());
+
+        std::vector<std::string> filenames;
+        {
+            const auto files = target_sub->GetFiles();
+            std::transform(files.begin(), files.end(), std::back_inserter(filenames),
+                           [](const auto& vfile) { return vfile->GetName(); });
+        }
+
+        for (const auto& filename : filenames) {
+            VfsDeleteFileWrap(target_sub, filename);
+        }
+
+        if (target_sub == nullptr || source_sub == nullptr ||
+            !VfsRawCopyDProgressSingle(source_sub, target_sub, progress)) {
+            LOG_ERROR(Service_BCAT, "Boxcat failed to copy extracted ZIP to target directory!");
+            progress.FinishDownload(ERROR_GENERAL_BCAT_FAILURE);
+            return;
+        }
+    }
+
+    progress.FinishDownload(RESULT_SUCCESS);
+}
+
+bool Boxcat::Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) {
+    is_syncing.exchange(true);
+
+    std::thread([this, title, &progress] {
+        SynchronizeInternal(applet_manager, dir_getter, title, progress);
+    }).detach();
+
+    return true;
+}
+
+bool Boxcat::SynchronizeDirectory(TitleIDVersion title, std::string name,
+                                  ProgressServiceBackend& progress) {
+    is_syncing.exchange(true);
+
+    std::thread([this, title, name, &progress] {
+        SynchronizeInternal(applet_manager, dir_getter, title, progress, name);
+    }).detach();
+
+    return true;
+}
+
+bool Boxcat::Clear(u64 title_id) {
+    if (Settings::values.bcat_boxcat_local) {
+        LOG_INFO(Service_BCAT, "Boxcat using local data by override, skipping clear.");
+        return true;
+    }
+
+    const auto dir = dir_getter(title_id);
+
+    std::vector<std::string> dirnames;
+
+    for (const auto& subdir : dir->GetSubdirectories())
+        dirnames.push_back(subdir->GetName());
+
+    for (const auto& subdir : dirnames) {
+        if (!dir->DeleteSubdirectoryRecursive(subdir))
+            return false;
+    }
+
+    return true;
+}
+
+void Boxcat::SetPassphrase(u64 title_id, const Passphrase& passphrase) {
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, passphrase={}", title_id,
+              Common::HexToString(passphrase));
+}
+
+std::optional<std::vector<u8>> Boxcat::GetLaunchParameter(TitleIDVersion title) {
+    const auto path{GetBINFilePath(title.title_id)};
+
+    if (Settings::values.bcat_boxcat_local) {
+        LOG_INFO(Service_BCAT, "Boxcat using local data by override, skipping download.");
+    } else {
+        Boxcat::Client client{path, title.title_id, title.build_id};
+
+        const auto res = client.DownloadLaunchParam();
+        if (res != DownloadResult::Success) {
+            LOG_ERROR(Service_BCAT, "Boxcat synchronization failed with error '{}'!", res);
+
+            if (res == DownloadResult::NoMatchBuildId || res == DownloadResult::NoMatchTitleId) {
+                Common::FS::Delete(path);
+            }
+
+            HandleDownloadDisplayResult(applet_manager, res);
+            return std::nullopt;
+        }
+    }
+
+    Common::FS::IOFile bin{path, "rb"};
+    const auto size = bin.GetSize();
+    std::vector<u8> bytes(size);
+    if (!bin.IsOpen() || size == 0 || bin.ReadBytes(bytes.data(), bytes.size()) != bytes.size()) {
+        LOG_ERROR(Service_BCAT, "Boxcat failed to read launch parameter binary at path '{}'!",
+                  path);
+        return std::nullopt;
+    }
+
+    return bytes;
+}
+
+Boxcat::StatusResult Boxcat::GetStatus(std::optional<std::string>& global,
+                                       std::map<std::string, EventStatus>& games) {
+    httplib::SSLClient client{BOXCAT_HOSTNAME, static_cast<int>(PORT)};
+    client.set_connection_timeout(static_cast<int>(TIMEOUT_SECONDS));
+    client.set_read_timeout(static_cast<int>(TIMEOUT_SECONDS));
+    client.set_write_timeout(static_cast<int>(TIMEOUT_SECONDS));
+
+    httplib::Headers headers{
+        {std::string("Game-Assets-API-Version"), std::string(BOXCAT_API_VERSION)},
+        {std::string("Boxcat-Client-Type"), std::string(BOXCAT_CLIENT_TYPE)},
+    };
+
+    if (!client.is_valid()) {
+        LOG_ERROR(Service_BCAT, "Client is invalid, going offline!");
+        return StatusResult::Offline;
+    }
+
+    if (!client.is_socket_open()) {
+        LOG_ERROR(Service_BCAT, "Failed to open socket, going offline!");
+        return StatusResult::Offline;
+    }
+
+    const auto response = client.Get(BOXCAT_PATHNAME_EVENTS, headers);
+    if (response == nullptr)
+        return StatusResult::Offline;
+
+    if (response->status == static_cast<int>(ResponseStatus::BadClientVersion))
+        return StatusResult::BadClientVersion;
+
+    try {
+        nlohmann::json json = nlohmann::json::parse(response->body);
+
+        if (!json["online"].get<bool>())
+            return StatusResult::Offline;
+
+        if (json["global"].is_null())
+            global = std::nullopt;
+        else
+            global = json["global"].get<std::string>();
+
+        if (json["games"].is_array()) {
+            for (const auto& object : json["games"]) {
+                if (object.is_object() && object.find("name") != object.end()) {
+                    EventStatus detail{};
+                    if (object["header"].is_string()) {
+                        detail.header = object["header"].get<std::string>();
+                    } else {
+                        detail.header = std::nullopt;
+                    }
+
+                    if (object["footer"].is_string()) {
+                        detail.footer = object["footer"].get<std::string>();
+                    } else {
+                        detail.footer = std::nullopt;
+                    }
+
+                    if (object["events"].is_array()) {
+                        for (const auto& event : object["events"]) {
+                            if (!event.is_string())
+                                continue;
+                            detail.events.push_back(event.get<std::string>());
+                        }
+                    }
+
+                    games.insert_or_assign(object["name"], std::move(detail));
+                }
+            }
+        }
+
+        return StatusResult::Success;
+    } catch (const nlohmann::json::parse_error& error) {
+        LOG_ERROR(Service_BCAT, "{}", error.what());
+        return StatusResult::ParseError;
+    }
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/backend/boxcat.h

@@ -0,0 +1,64 @@
+// Copyright 2019 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <atomic>
+#include <map>
+#include <optional>
+#include "core/hle/service/bcat/backend/backend.h"
+
+namespace Service::AM::Applets {
+class AppletManager;
+}
+
+namespace Service::BCAT {
+
+struct EventStatus {
+    std::optional<std::string> header;
+    std::optional<std::string> footer;
+    std::vector<std::string> events;
+};
+
+/// Boxcat is yuzu's custom backend implementation of Nintendo's BCAT service. It is free to use and
+/// doesn't require a switch or nintendo account. The content is controlled by the yuzu team.
+class Boxcat final : public Backend {
+    friend void SynchronizeInternal(AM::Applets::AppletManager& applet_manager,
+                                    DirectoryGetter dir_getter, TitleIDVersion title,
+                                    ProgressServiceBackend& progress,
+                                    std::optional<std::string> dir_name);
+
+public:
+    explicit Boxcat(AM::Applets::AppletManager& applet_manager_, DirectoryGetter getter);
+    ~Boxcat() override;
+
+    bool Synchronize(TitleIDVersion title, ProgressServiceBackend& progress) override;
+    bool SynchronizeDirectory(TitleIDVersion title, std::string name,
+                              ProgressServiceBackend& progress) override;
+
+    bool Clear(u64 title_id) override;
+
+    void SetPassphrase(u64 title_id, const Passphrase& passphrase) override;
+
+    std::optional<std::vector<u8>> GetLaunchParameter(TitleIDVersion title) override;
+
+    enum class StatusResult {
+        Success,
+        Offline,
+        ParseError,
+        BadClientVersion,
+    };
+
+    static StatusResult GetStatus(std::optional<std::string>& global,
+                                  std::map<std::string, EventStatus>& games);
+
+private:
+    std::atomic_bool is_syncing{false};
+
+    class Client;
+    std::unique_ptr<Client> client;
+    AM::Applets::AppletManager& applet_manager;
+};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat.cpp

@@ -0,0 +1,25 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/bcat/bcat.h"
+
+namespace Service::BCAT {
+
+BCAT::BCAT(Core::System& system, std::shared_ptr<Module> module,
+           FileSystem::FileSystemController& fsc, const char* name)
+    : Interface(system, std::move(module), fsc, name) {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, &BCAT::CreateBcatService, "CreateBcatService"},
+        {1, &BCAT::CreateDeliveryCacheStorageService, "CreateDeliveryCacheStorageService"},
+        {2, &BCAT::CreateDeliveryCacheStorageServiceWithApplicationId, "CreateDeliveryCacheStorageServiceWithApplicationId"},
+        {3, nullptr, "CreateDeliveryCacheProgressService"},
+        {4, nullptr, "CreateDeliveryCacheProgressServiceWithApplicationId"},
+    };
+    // clang-format on
+    RegisterHandlers(functions);
+}
+
+BCAT::~BCAT() = default;
+} // namespace Service::BCAT

src/core/hle/service/bcat/bcat.h

@@ -0,0 +1,22 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/bcat/module.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::BCAT {
+
+class BCAT final : public Module::Interface {
+public:
+    explicit BCAT(Core::System& system, std::shared_ptr<Module> module,
+                  FileSystem::FileSystemController& fsc, const char* name);
+    ~BCAT() override;
+};
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/module.cpp

@@ -0,0 +1,604 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cctype>
+#include <mbedtls/md5.h>
+#include "backend/boxcat.h"
+#include "common/hex_util.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "core/file_sys/vfs.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/bcat/backend/backend.h"
+#include "core/hle/service/bcat/bcat.h"
+#include "core/hle/service/bcat/module.h"
+#include "core/hle/service/filesystem/filesystem.h"
+#include "core/settings.h"
+
+namespace Service::BCAT {
+
+constexpr ResultCode ERROR_INVALID_ARGUMENT{ErrorModule::BCAT, 1};
+constexpr ResultCode ERROR_FAILED_OPEN_ENTITY{ErrorModule::BCAT, 2};
+constexpr ResultCode ERROR_ENTITY_ALREADY_OPEN{ErrorModule::BCAT, 6};
+constexpr ResultCode ERROR_NO_OPEN_ENTITY{ErrorModule::BCAT, 7};
+
+// The command to clear the delivery cache just calls fs IFileSystem DeleteFile on all of the files
+// and if any of them have a non-zero result it just forwards that result. This is the FS error code
+// for permission denied, which is the closest approximation of this scenario.
+constexpr ResultCode ERROR_FAILED_CLEAR_CACHE{ErrorModule::FS, 6400};
+
+using BCATDigest = std::array<u8, 0x10>;
+
+namespace {
+
+u64 GetCurrentBuildID(const Core::System::CurrentBuildProcessID& id) {
+    u64 out{};
+    std::memcpy(&out, id.data(), sizeof(u64));
+    return out;
+}
+
+// The digest is only used to determine if a file is unique compared to others of the same name.
+// Since the algorithm isn't ever checked in game, MD5 is safe.
+BCATDigest DigestFile(const FileSys::VirtualFile& file) {
+    BCATDigest out{};
+    const auto bytes = file->ReadAllBytes();
+    mbedtls_md5_ret(bytes.data(), bytes.size(), out.data());
+    return out;
+}
+
+// For a name to be valid it must be non-empty, must have a null terminating character as the final
+// char, can only contain numbers, letters, underscores and a hyphen if directory and a period if
+// file.
+bool VerifyNameValidInternal(Kernel::HLERequestContext& ctx, std::array<char, 0x20> name,
+                             char match_char) {
+    const auto null_chars = std::count(name.begin(), name.end(), 0);
+    const auto bad_chars = std::count_if(name.begin(), name.end(), [match_char](char c) {
+        return !std::isalnum(static_cast<u8>(c)) && c != '_' && c != match_char && c != '\0';
+    });
+    if (null_chars == 0x20 || null_chars == 0 || bad_chars != 0 || name[0x1F] != '\0') {
+        LOG_ERROR(Service_BCAT, "Name passed was invalid!");
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(ERROR_INVALID_ARGUMENT);
+        return false;
+    }
+
+    return true;
+}
+
+bool VerifyNameValidDir(Kernel::HLERequestContext& ctx, DirectoryName name) {
+    return VerifyNameValidInternal(ctx, name, '-');
+}
+
+bool VerifyNameValidFile(Kernel::HLERequestContext& ctx, FileName name) {
+    return VerifyNameValidInternal(ctx, name, '.');
+}
+
+} // Anonymous namespace
+
+struct DeliveryCacheDirectoryEntry {
+    FileName name;
+    u64 size;
+    BCATDigest digest;
+};
+
+class IDeliveryCacheProgressService final : public ServiceFramework<IDeliveryCacheProgressService> {
+public:
+    explicit IDeliveryCacheProgressService(Core::System& system_,
+                                           std::shared_ptr<Kernel::ReadableEvent> event_,
+                                           const DeliveryCacheProgressImpl& impl_)
+        : ServiceFramework{system_, "IDeliveryCacheProgressService"}, event{std::move(event_)},
+          impl{impl_} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IDeliveryCacheProgressService::GetEvent, "GetEvent"},
+            {1, &IDeliveryCacheProgressService::GetImpl, "GetImpl"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void GetEvent(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(event);
+    }
+
+    void GetImpl(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        ctx.WriteBuffer(impl);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    std::shared_ptr<Kernel::ReadableEvent> event;
+    const DeliveryCacheProgressImpl& impl;
+};
+
+class IBcatService final : public ServiceFramework<IBcatService> {
+public:
+    explicit IBcatService(Core::System& system_, Backend& backend_)
+        : ServiceFramework{system_, "IBcatService"}, backend{backend_},
+          progress{{
+              ProgressServiceBackend{system_.Kernel(), "Normal"},
+              ProgressServiceBackend{system_.Kernel(), "Directory"},
+          }} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {10100, &IBcatService::RequestSyncDeliveryCache, "RequestSyncDeliveryCache"},
+            {10101, &IBcatService::RequestSyncDeliveryCacheWithDirectoryName, "RequestSyncDeliveryCacheWithDirectoryName"},
+            {10200, nullptr, "CancelSyncDeliveryCacheRequest"},
+            {20100, nullptr, "RequestSyncDeliveryCacheWithApplicationId"},
+            {20101, nullptr, "RequestSyncDeliveryCacheWithApplicationIdAndDirectoryName"},
+            {20300, nullptr, "GetDeliveryCacheStorageUpdateNotifier"},
+            {20301, nullptr, "RequestSuspendDeliveryTask"},
+            {20400, nullptr, "RegisterSystemApplicationDeliveryTask"},
+            {20401, nullptr, "UnregisterSystemApplicationDeliveryTask"},
+            {20410, nullptr, "SetSystemApplicationDeliveryTaskTimer"},
+            {30100, &IBcatService::SetPassphrase, "SetPassphrase"},
+            {30101, nullptr, "Unknown"},
+            {30102, nullptr, "Unknown2"},
+            {30200, nullptr, "RegisterBackgroundDeliveryTask"},
+            {30201, nullptr, "UnregisterBackgroundDeliveryTask"},
+            {30202, nullptr, "BlockDeliveryTask"},
+            {30203, nullptr, "UnblockDeliveryTask"},
+            {30210, nullptr, "SetDeliveryTaskTimer"},
+            {30300, nullptr, "RegisterSystemApplicationDeliveryTasks"},
+            {90100, nullptr, "EnumerateBackgroundDeliveryTask"},
+            {90200, nullptr, "GetDeliveryList"},
+            {90201, &IBcatService::ClearDeliveryCacheStorage, "ClearDeliveryCacheStorage"},
+            {90202, nullptr, "ClearDeliveryTaskSubscriptionStatus"},
+            {90300, nullptr, "GetPushNotificationLog"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+
+private:
+    enum class SyncType {
+        Normal,
+        Directory,
+        Count,
+    };
+
+    std::shared_ptr<IDeliveryCacheProgressService> CreateProgressService(SyncType type) {
+        auto& backend{progress.at(static_cast<std::size_t>(type))};
+        return std::make_shared<IDeliveryCacheProgressService>(system, backend.GetEvent(),
+                                                               backend.GetImpl());
+    }
+
+    void RequestSyncDeliveryCache(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        backend.Synchronize({system.CurrentProcess()->GetTitleID(),
+                             GetCurrentBuildID(system.GetCurrentProcessBuildID())},
+                            progress.at(static_cast<std::size_t>(SyncType::Normal)));
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface(CreateProgressService(SyncType::Normal));
+    }
+
+    void RequestSyncDeliveryCacheWithDirectoryName(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto name_raw = rp.PopRaw<DirectoryName>();
+        const auto name =
+            Common::StringFromFixedZeroTerminatedBuffer(name_raw.data(), name_raw.size());
+
+        LOG_DEBUG(Service_BCAT, "called, name={}", name);
+
+        backend.SynchronizeDirectory({system.CurrentProcess()->GetTitleID(),
+                                      GetCurrentBuildID(system.GetCurrentProcessBuildID())},
+                                     name,
+                                     progress.at(static_cast<std::size_t>(SyncType::Directory)));
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface(CreateProgressService(SyncType::Directory));
+    }
+
+    void SetPassphrase(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto title_id = rp.PopRaw<u64>();
+
+        const auto passphrase_raw = ctx.ReadBuffer();
+
+        LOG_DEBUG(Service_BCAT, "called, title_id={:016X}, passphrase={}", title_id,
+                  Common::HexToString(passphrase_raw));
+
+        if (title_id == 0) {
+            LOG_ERROR(Service_BCAT, "Invalid title ID!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_INVALID_ARGUMENT);
+        }
+
+        if (passphrase_raw.size() > 0x40) {
+            LOG_ERROR(Service_BCAT, "Passphrase too large!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_INVALID_ARGUMENT);
+            return;
+        }
+
+        Passphrase passphrase{};
+        std::memcpy(passphrase.data(), passphrase_raw.data(),
+                    std::min(passphrase.size(), passphrase_raw.size()));
+
+        backend.SetPassphrase(title_id, passphrase);
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void ClearDeliveryCacheStorage(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto title_id = rp.PopRaw<u64>();
+
+        LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
+
+        if (title_id == 0) {
+            LOG_ERROR(Service_BCAT, "Invalid title ID!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_INVALID_ARGUMENT);
+            return;
+        }
+
+        if (!backend.Clear(title_id)) {
+            LOG_ERROR(Service_BCAT, "Could not clear the directory successfully!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_FAILED_CLEAR_CACHE);
+            return;
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    Backend& backend;
+
+    std::array<ProgressServiceBackend, static_cast<std::size_t>(SyncType::Count)> progress;
+};
+
+void Module::Interface::CreateBcatService(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IBcatService>(system, *backend);
+}
+
+class IDeliveryCacheFileService final : public ServiceFramework<IDeliveryCacheFileService> {
+public:
+    explicit IDeliveryCacheFileService(Core::System& system_, FileSys::VirtualDir root_)
+        : ServiceFramework{system_, "IDeliveryCacheFileService"}, root(std::move(root_)) {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IDeliveryCacheFileService::Open, "Open"},
+            {1, &IDeliveryCacheFileService::Read, "Read"},
+            {2, &IDeliveryCacheFileService::GetSize, "GetSize"},
+            {3, &IDeliveryCacheFileService::GetDigest, "GetDigest"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void Open(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto dir_name_raw = rp.PopRaw<DirectoryName>();
+        const auto file_name_raw = rp.PopRaw<FileName>();
+
+        const auto dir_name =
+            Common::StringFromFixedZeroTerminatedBuffer(dir_name_raw.data(), dir_name_raw.size());
+        const auto file_name =
+            Common::StringFromFixedZeroTerminatedBuffer(file_name_raw.data(), file_name_raw.size());
+
+        LOG_DEBUG(Service_BCAT, "called, dir_name={}, file_name={}", dir_name, file_name);
+
+        if (!VerifyNameValidDir(ctx, dir_name_raw) || !VerifyNameValidFile(ctx, file_name_raw))
+            return;
+
+        if (current_file != nullptr) {
+            LOG_ERROR(Service_BCAT, "A file has already been opened on this interface!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_ENTITY_ALREADY_OPEN);
+            return;
+        }
+
+        const auto dir = root->GetSubdirectory(dir_name);
+
+        if (dir == nullptr) {
+            LOG_ERROR(Service_BCAT, "The directory of name={} couldn't be opened!", dir_name);
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_FAILED_OPEN_ENTITY);
+            return;
+        }
+
+        current_file = dir->GetFile(file_name);
+
+        if (current_file == nullptr) {
+            LOG_ERROR(Service_BCAT, "The file of name={} couldn't be opened!", file_name);
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_FAILED_OPEN_ENTITY);
+            return;
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void Read(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto offset{rp.PopRaw<u64>()};
+
+        auto size = ctx.GetWriteBufferSize();
+
+        LOG_DEBUG(Service_BCAT, "called, offset={:016X}, size={:016X}", offset, size);
+
+        if (current_file == nullptr) {
+            LOG_ERROR(Service_BCAT, "There is no file currently open!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_NO_OPEN_ENTITY);
+        }
+
+        size = std::min<u64>(current_file->GetSize() - offset, size);
+        const auto buffer = current_file->ReadBytes(size, offset);
+        ctx.WriteBuffer(buffer);
+
+        IPC::ResponseBuilder rb{ctx, 4};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u64>(buffer.size());
+    }
+
+    void GetSize(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        if (current_file == nullptr) {
+            LOG_ERROR(Service_BCAT, "There is no file currently open!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_NO_OPEN_ENTITY);
+        }
+
+        IPC::ResponseBuilder rb{ctx, 4};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push<u64>(current_file->GetSize());
+    }
+
+    void GetDigest(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        if (current_file == nullptr) {
+            LOG_ERROR(Service_BCAT, "There is no file currently open!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_NO_OPEN_ENTITY);
+        }
+
+        IPC::ResponseBuilder rb{ctx, 6};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushRaw(DigestFile(current_file));
+    }
+
+    FileSys::VirtualDir root;
+    FileSys::VirtualFile current_file;
+};
+
+class IDeliveryCacheDirectoryService final
+    : public ServiceFramework<IDeliveryCacheDirectoryService> {
+public:
+    explicit IDeliveryCacheDirectoryService(Core::System& system_, FileSys::VirtualDir root_)
+        : ServiceFramework{system_, "IDeliveryCacheDirectoryService"}, root(std::move(root_)) {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IDeliveryCacheDirectoryService::Open, "Open"},
+            {1, &IDeliveryCacheDirectoryService::Read, "Read"},
+            {2, &IDeliveryCacheDirectoryService::GetCount, "GetCount"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void Open(Kernel::HLERequestContext& ctx) {
+        IPC::RequestParser rp{ctx};
+        const auto name_raw = rp.PopRaw<DirectoryName>();
+        const auto name =
+            Common::StringFromFixedZeroTerminatedBuffer(name_raw.data(), name_raw.size());
+
+        LOG_DEBUG(Service_BCAT, "called, name={}", name);
+
+        if (!VerifyNameValidDir(ctx, name_raw))
+            return;
+
+        if (current_dir != nullptr) {
+            LOG_ERROR(Service_BCAT, "A file has already been opened on this interface!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_ENTITY_ALREADY_OPEN);
+            return;
+        }
+
+        current_dir = root->GetSubdirectory(name);
+
+        if (current_dir == nullptr) {
+            LOG_ERROR(Service_BCAT, "Failed to open the directory name={}!", name);
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_FAILED_OPEN_ENTITY);
+            return;
+        }
+
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(RESULT_SUCCESS);
+    }
+
+    void Read(Kernel::HLERequestContext& ctx) {
+        auto write_size = ctx.GetWriteBufferSize() / sizeof(DeliveryCacheDirectoryEntry);
+
+        LOG_DEBUG(Service_BCAT, "called, write_size={:016X}", write_size);
+
+        if (current_dir == nullptr) {
+            LOG_ERROR(Service_BCAT, "There is no open directory!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_NO_OPEN_ENTITY);
+            return;
+        }
+
+        const auto files = current_dir->GetFiles();
+        write_size = std::min<u64>(write_size, files.size());
+        std::vector<DeliveryCacheDirectoryEntry> entries(write_size);
+        std::transform(
+            files.begin(), files.begin() + write_size, entries.begin(), [](const auto& file) {
+                FileName name{};
+                std::memcpy(name.data(), file->GetName().data(),
+                            std::min(file->GetName().size(), name.size()));
+                return DeliveryCacheDirectoryEntry{name, file->GetSize(), DigestFile(file)};
+            });
+
+        ctx.WriteBuffer(entries);
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(static_cast<u32>(write_size * sizeof(DeliveryCacheDirectoryEntry)));
+    }
+
+    void GetCount(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        if (current_dir == nullptr) {
+            LOG_ERROR(Service_BCAT, "There is no open directory!");
+            IPC::ResponseBuilder rb{ctx, 2};
+            rb.Push(ERROR_NO_OPEN_ENTITY);
+            return;
+        }
+
+        const auto files = current_dir->GetFiles();
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(static_cast<u32>(files.size()));
+    }
+
+    FileSys::VirtualDir root;
+    FileSys::VirtualDir current_dir;
+};
+
+class IDeliveryCacheStorageService final : public ServiceFramework<IDeliveryCacheStorageService> {
+public:
+    explicit IDeliveryCacheStorageService(Core::System& system_, FileSys::VirtualDir root_)
+        : ServiceFramework{system_, "IDeliveryCacheStorageService"}, root(std::move(root_)) {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IDeliveryCacheStorageService::CreateFileService, "CreateFileService"},
+            {1, &IDeliveryCacheStorageService::CreateDirectoryService, "CreateDirectoryService"},
+            {10, &IDeliveryCacheStorageService::EnumerateDeliveryCacheDirectory, "EnumerateDeliveryCacheDirectory"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+
+        for (const auto& subdir : root->GetSubdirectories()) {
+            DirectoryName name{};
+            std::memcpy(name.data(), subdir->GetName().data(),
+                        std::min(sizeof(DirectoryName) - 1, subdir->GetName().size()));
+            entries.push_back(name);
+        }
+    }
+
+private:
+    void CreateFileService(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDeliveryCacheFileService>(system, root);
+    }
+
+    void CreateDirectoryService(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BCAT, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IDeliveryCacheDirectoryService>(system, root);
+    }
+
+    void EnumerateDeliveryCacheDirectory(Kernel::HLERequestContext& ctx) {
+        auto size = ctx.GetWriteBufferSize() / sizeof(DirectoryName);
+
+        LOG_DEBUG(Service_BCAT, "called, size={:016X}", size);
+
+        size = std::min<u64>(size, entries.size() - next_read_index);
+        ctx.WriteBuffer(entries.data() + next_read_index, size * sizeof(DirectoryName));
+        next_read_index += size;
+
+        IPC::ResponseBuilder rb{ctx, 3};
+        rb.Push(RESULT_SUCCESS);
+        rb.Push(static_cast<u32>(size));
+    }
+
+    FileSys::VirtualDir root;
+    std::vector<DirectoryName> entries;
+    u64 next_read_index = 0;
+};
+
+void Module::Interface::CreateDeliveryCacheStorageService(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_BCAT, "called");
+
+    const auto title_id = system.CurrentProcess()->GetTitleID();
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IDeliveryCacheStorageService>(system, fsc.GetBCATDirectory(title_id));
+}
+
+void Module::Interface::CreateDeliveryCacheStorageServiceWithApplicationId(
+    Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto title_id = rp.PopRaw<u64>();
+
+    LOG_DEBUG(Service_BCAT, "called, title_id={:016X}", title_id);
+
+    IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushIpcInterface<IDeliveryCacheStorageService>(system, fsc.GetBCATDirectory(title_id));
+}
+
+std::unique_ptr<Backend> CreateBackendFromSettings([[maybe_unused]] Core::System& system,
+                                                   DirectoryGetter getter) {
+#ifdef YUZU_ENABLE_BOXCAT
+    if (Settings::values.bcat_backend == "boxcat") {
+        return std::make_unique<Boxcat>(system.GetAppletManager(), std::move(getter));
+    }
+#endif
+
+    return std::make_unique<NullBackend>(std::move(getter));
+}
+
+Module::Interface::Interface(Core::System& system_, std::shared_ptr<Module> module_,
+                             FileSystem::FileSystemController& fsc_, const char* name)
+    : ServiceFramework{system_, name}, fsc{fsc_}, module{std::move(module_)},
+      backend{CreateBackendFromSettings(system_,
+                                        [&fsc_](u64 tid) { return fsc_.GetBCATDirectory(tid); })} {}
+
+Module::Interface::~Interface() = default;
+
+void InstallInterfaces(Core::System& system) {
+    auto module = std::make_shared<Module>();
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:a")
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:m")
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:u")
+        ->InstallAsService(system.ServiceManager());
+    std::make_shared<BCAT>(system, module, system.GetFileSystemController(), "bcat:s")
+        ->InstallAsService(system.ServiceManager());
+}
+
+} // namespace Service::BCAT

src/core/hle/service/bcat/module.h

@@ -0,0 +1,48 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service {
+
+namespace FileSystem {
+class FileSystemController;
+} // namespace FileSystem
+
+namespace BCAT {
+
+class Backend;
+
+class Module final {
+public:
+    class Interface : public ServiceFramework<Interface> {
+    public:
+        explicit Interface(Core::System& system_, std::shared_ptr<Module> module_,
+                           FileSystem::FileSystemController& fsc_, const char* name);
+        ~Interface() override;
+
+        void CreateBcatService(Kernel::HLERequestContext& ctx);
+        void CreateDeliveryCacheStorageService(Kernel::HLERequestContext& ctx);
+        void CreateDeliveryCacheStorageServiceWithApplicationId(Kernel::HLERequestContext& ctx);
+
+    protected:
+        FileSystem::FileSystemController& fsc;
+
+        std::shared_ptr<Module> module;
+        std::unique_ptr<Backend> backend;
+    };
+};
+
+/// Registers all BCAT services with the specified service manager.
+void InstallInterfaces(Core::System& system);
+
+} // namespace BCAT
+
+} // namespace Service

src/core/hle/service/bpc/bpc.cpp

@@ -0,0 +1,63 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <memory>
+
+#include "core/hle/service/bpc/bpc.h"
+#include "core/hle/service/service.h"
+#include "core/hle/service/sm/sm.h"
+
+namespace Service::BPC {
+
+class BPC final : public ServiceFramework<BPC> {
+public:
+    explicit BPC(Core::System& system_) : ServiceFramework{system_, "bpc"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "ShutdownSystem"},
+            {1, nullptr, "RebootSystem"},
+            {2, nullptr, "GetWakeupReason"},
+            {3, nullptr, "GetShutdownReason"},
+            {4, nullptr, "GetAcOk"},
+            {5, nullptr, "GetBoardPowerControlEvent"},
+            {6, nullptr, "GetSleepButtonState"},
+            {7, nullptr, "GetPowerEvent"},
+            {8, nullptr, "CreateWakeupTimer"},
+            {9, nullptr, "CancelWakeupTimer"},
+            {10, nullptr, "EnableWakeupTimerOnDevice"},
+            {11, nullptr, "CreateWakeupTimerEx"},
+            {12, nullptr, "GetLastEnabledWakeupTimerType"},
+            {13, nullptr, "CleanAllWakeupTimers"},
+            {14, nullptr, "Unknown"},
+            {15, nullptr, "Unknown2"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class BPC_R final : public ServiceFramework<BPC_R> {
+public:
+    explicit BPC_R(Core::System& system_) : ServiceFramework{system_, "bpc:r"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetRtcTime"},
+            {1, nullptr, "SetRtcTime"},
+            {2, nullptr, "GetRtcResetDetected"},
+            {3, nullptr, "ClearRtcResetDetected"},
+            {4, nullptr, "SetUpRtcResetOnShutdown"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system) {
+    std::make_shared<BPC>(system)->InstallAsService(sm);
+    std::make_shared<BPC_R>(system)->InstallAsService(sm);
+}
+
+} // namespace Service::BPC

src/core/hle/service/bpc/bpc.h

@@ -0,0 +1,19 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Core {
+class System;
+}
+
+namespace Service::SM {
+class ServiceManager;
+}
+
+namespace Service::BPC {
+
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system);
+
+} // namespace Service::BPC

src/core/hle/service/btdrv/btdrv.cpp

@@ -0,0 +1,173 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/btdrv/btdrv.h"
+#include "core/hle/service/service.h"
+#include "core/hle/service/sm/sm.h"
+
+namespace Service::BtDrv {
+
+class Bt final : public ServiceFramework<Bt> {
+public:
+    explicit Bt(Core::System& system_) : ServiceFramework{system_, "bt"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "LeClientReadCharacteristic"},
+            {1, nullptr, "LeClientReadDescriptor"},
+            {2, nullptr, "LeClientWriteCharacteristic"},
+            {3, nullptr, "LeClientWriteDescriptor"},
+            {4, nullptr, "LeClientRegisterNotification"},
+            {5, nullptr, "LeClientDeregisterNotification"},
+            {6, nullptr, "SetLeResponse"},
+            {7, nullptr, "LeSendIndication"},
+            {8, nullptr, "GetLeEventInfo"},
+            {9, &Bt::RegisterBleEvent, "RegisterBleEvent"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+
+        auto& kernel = system.Kernel();
+        register_event = Kernel::WritableEvent::CreateEventPair(kernel, "BT:RegisterEvent");
+    }
+
+private:
+    void RegisterBleEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_BTM, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(register_event.readable);
+    }
+
+    Kernel::EventPair register_event;
+};
+
+class BtDrv final : public ServiceFramework<BtDrv> {
+public:
+    explicit BtDrv(Core::System& system_) : ServiceFramework{system_, "btdrv"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "InitializeBluetoothDriver"},
+            {1, nullptr, "InitializeBluetooth"},
+            {2, nullptr, "EnableBluetooth"},
+            {3, nullptr, "DisableBluetooth"},
+            {4, nullptr, "FinalizeBluetooth"},
+            {5, nullptr, "GetAdapterProperties"},
+            {6, nullptr, "GetAdapterProperty"},
+            {7, nullptr, "SetAdapterProperty"},
+            {8, nullptr, "StartInquiry"},
+            {9, nullptr, "StopInquiry"},
+            {10, nullptr, "CreateBond"},
+            {11, nullptr, "RemoveBond"},
+            {12, nullptr, "CancelBond"},
+            {13, nullptr, "RespondToPinRequest"},
+            {14, nullptr, "RespondToSspRequest"},
+            {15, nullptr, "GetEventInfo"},
+            {16, nullptr, "InitializeHid"},
+            {17, nullptr, "OpenHidConnection"},
+            {18, nullptr, "CloseHidConnection"},
+            {19, nullptr, "WriteHidData"},
+            {20, nullptr, "WriteHidData2"},
+            {21, nullptr, "SetHidReport"},
+            {22, nullptr, "GetHidReport"},
+            {23, nullptr, "TriggerConnection"},
+            {24, nullptr, "AddPairedDeviceInfo"},
+            {25, nullptr, "GetPairedDeviceInfo"},
+            {26, nullptr, "FinalizeHid"},
+            {27, nullptr, "GetHidEventInfo"},
+            {28, nullptr, "SetTsi"},
+            {29, nullptr, "EnableBurstMode"},
+            {30, nullptr, "SetZeroRetransmission"},
+            {31, nullptr, "EnableMcMode"},
+            {32, nullptr, "EnableLlrScan"},
+            {33, nullptr, "DisableLlrScan"},
+            {34, nullptr, "EnableRadio"},
+            {35, nullptr, "SetVisibility"},
+            {36, nullptr, "EnableTbfcScan"},
+            {37, nullptr, "RegisterHidReportEvent"},
+            {38, nullptr, "GetHidReportEventInfo"},
+            {39, nullptr, "GetLatestPlr"},
+            {40, nullptr, "GetPendingConnections"},
+            {41, nullptr, "GetChannelMap"},
+            {42, nullptr, "EnableTxPowerBoostSetting"},
+            {43, nullptr, "IsTxPowerBoostSettingEnabled"},
+            {44, nullptr, "EnableAfhSetting"},
+            {45, nullptr, "IsAfhSettingEnabled"},
+            {46, nullptr, "InitializeBle"},
+            {47, nullptr, "EnableBle"},
+            {48, nullptr, "DisableBle"},
+            {49, nullptr, "FinalizeBle"},
+            {50, nullptr, "SetBleVisibility"},
+            {51, nullptr, "SetBleConnectionParameter"},
+            {52, nullptr, "SetBleDefaultConnectionParameter"},
+            {53, nullptr, "SetBleAdvertiseData"},
+            {54, nullptr, "SetBleAdvertiseParameter"},
+            {55, nullptr, "StartBleScan"},
+            {56, nullptr, "StopBleScan"},
+            {57, nullptr, "AddBleScanFilterCondition"},
+            {58, nullptr, "DeleteBleScanFilterCondition"},
+            {59, nullptr, "DeleteBleScanFilter"},
+            {60, nullptr, "ClearBleScanFilters"},
+            {61, nullptr, "EnableBleScanFilter"},
+            {62, nullptr, "RegisterGattClient"},
+            {63, nullptr, "UnregisterGattClient"},
+            {64, nullptr, "UnregisterAllGattClients"},
+            {65, nullptr, "ConnectGattServer"},
+            {66, nullptr, "CancelConnectGattServer"},
+            {67, nullptr, "DisconnectGattServer"},
+            {68, nullptr, "GetGattAttribute"},
+            {69, nullptr, "GetGattService"},
+            {70, nullptr, "ConfigureAttMtu"},
+            {71, nullptr, "RegisterGattServer"},
+            {72, nullptr, "UnregisterGattServer"},
+            {73, nullptr, "ConnectGattClient"},
+            {74, nullptr, "DisconnectGattClient"},
+            {75, nullptr, "AddGattService"},
+            {76, nullptr, "EnableGattService"},
+            {77, nullptr, "AddGattCharacteristic"},
+            {78, nullptr, "AddGattDescriptor"},
+            {79, nullptr, "GetBleManagedEventInfo"},
+            {80, nullptr, "GetGattFirstCharacteristic"},
+            {81, nullptr, "GetGattNextCharacteristic"},
+            {82, nullptr, "GetGattFirstDescriptor"},
+            {83, nullptr, "GetGattNextDescriptor"},
+            {84, nullptr, "RegisterGattManagedDataPath"},
+            {85, nullptr, "UnregisterGattManagedDataPath"},
+            {86, nullptr, "RegisterGattHidDataPath"},
+            {87, nullptr, "UnregisterGattHidDataPath"},
+            {88, nullptr, "RegisterGattDataPath"},
+            {89, nullptr, "UnregisterGattDataPath"},
+            {90, nullptr, "ReadGattCharacteristic"},
+            {91, nullptr, "ReadGattDescriptor"},
+            {92, nullptr, "WriteGattCharacteristic"},
+            {93, nullptr, "WriteGattDescriptor"},
+            {94, nullptr, "RegisterGattNotification"},
+            {95, nullptr, "UnregisterGattNotification"},
+            {96, nullptr, "GetLeHidEventInfo"},
+            {97, nullptr, "RegisterBleHidEvent"},
+            {98, nullptr, "SetBleScanParameter"},
+            {99, nullptr, "MoveToSecondaryPiconet"},
+            {256, nullptr, "IsManufacturingMode"},
+            {257, nullptr, "EmulateBluetoothCrash"},
+            {258, nullptr, "GetBleChannelMap"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system) {
+    std::make_shared<BtDrv>(system)->InstallAsService(sm);
+    std::make_shared<Bt>(system)->InstallAsService(sm);
+}
+
+} // namespace Service::BtDrv

src/core/hle/service/btdrv/btdrv.h

@@ -0,0 +1,20 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Service::SM {
+class ServiceManager;
+}
+
+namespace Core {
+class System;
+}
+
+namespace Service::BtDrv {
+
+/// Registers all BtDrv services with the specified service manager.
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system);
+
+} // namespace Service::BtDrv

src/core/hle/service/btm/btm.cpp

@@ -0,0 +1,282 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <memory>
+
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/writable_event.h"
+#include "core/hle/service/btm/btm.h"
+#include "core/hle/service/service.h"
+
+namespace Service::BTM {
+
+class IBtmUserCore final : public ServiceFramework<IBtmUserCore> {
+public:
+    explicit IBtmUserCore(Core::System& system_) : ServiceFramework{system_, "IBtmUserCore"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &IBtmUserCore::AcquireBleScanEvent, "AcquireBleScanEvent"},
+            {1, nullptr, "GetBleScanFilterParameter"},
+            {2, nullptr, "GetBleScanFilterParameter2"},
+            {3, nullptr, "StartBleScanForGeneral"},
+            {4, nullptr, "StopBleScanForGeneral"},
+            {5, nullptr, "GetBleScanResultsForGeneral"},
+            {6, nullptr, "StartBleScanForPaired"},
+            {7, nullptr, "StopBleScanForPaired"},
+            {8, nullptr, "StartBleScanForSmartDevice"},
+            {9, nullptr, "StopBleScanForSmartDevice"},
+            {10, nullptr, "GetBleScanResultsForSmartDevice"},
+            {17, &IBtmUserCore::AcquireBleConnectionEvent, "AcquireBleConnectionEvent"},
+            {18, nullptr, "BleConnect"},
+            {19, nullptr, "BleDisconnect"},
+            {20, nullptr, "BleGetConnectionState"},
+            {21, nullptr, "AcquireBlePairingEvent"},
+            {22, nullptr, "BlePairDevice"},
+            {23, nullptr, "BleUnPairDevice"},
+            {24, nullptr, "BleUnPairDevice2"},
+            {25, nullptr, "BleGetPairedDevices"},
+            {26, &IBtmUserCore::AcquireBleServiceDiscoveryEvent, "AcquireBleServiceDiscoveryEvent"},
+            {27, nullptr, "GetGattServices"},
+            {28, nullptr, "GetGattService"},
+            {29, nullptr, "GetGattIncludedServices"},
+            {30, nullptr, "GetBelongingGattService"},
+            {31, nullptr, "GetGattCharacteristics"},
+            {32, nullptr, "GetGattDescriptors"},
+            {33, &IBtmUserCore::AcquireBleMtuConfigEvent, "AcquireBleMtuConfigEvent"},
+            {34, nullptr, "ConfigureBleMtu"},
+            {35, nullptr, "GetBleMtu"},
+            {36, nullptr, "RegisterBleGattDataPath"},
+            {37, nullptr, "UnregisterBleGattDataPath"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+
+        auto& kernel = system.Kernel();
+        scan_event = Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:ScanEvent");
+        connection_event =
+            Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:ConnectionEvent");
+        service_discovery =
+            Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:Discovery");
+        config_event = Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:ConfigEvent");
+    }
+
+private:
+    void AcquireBleScanEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_BTM, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(scan_event.readable);
+    }
+
+    void AcquireBleConnectionEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_BTM, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(connection_event.readable);
+    }
+
+    void AcquireBleServiceDiscoveryEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_BTM, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(service_discovery.readable);
+    }
+
+    void AcquireBleMtuConfigEvent(Kernel::HLERequestContext& ctx) {
+        LOG_WARNING(Service_BTM, "(STUBBED) called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushCopyObjects(config_event.readable);
+    }
+
+    Kernel::EventPair scan_event;
+    Kernel::EventPair connection_event;
+    Kernel::EventPair service_discovery;
+    Kernel::EventPair config_event;
+};
+
+class BTM_USR final : public ServiceFramework<BTM_USR> {
+public:
+    explicit BTM_USR(Core::System& system_) : ServiceFramework{system_, "btm:u"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &BTM_USR::GetCore, "GetCore"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+
+private:
+    void GetCore(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BTM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IBtmUserCore>(system);
+    }
+};
+
+class BTM final : public ServiceFramework<BTM> {
+public:
+    explicit BTM(Core::System& system_) : ServiceFramework{system_, "btm"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "GetState"},
+            {1, nullptr, "GetHostDeviceProperty"},
+            {2, nullptr, "AcquireDeviceConditionEvent"},
+            {3, nullptr, "GetDeviceCondition"},
+            {4, nullptr, "SetBurstMode"},
+            {5, nullptr, "SetSlotMode"},
+            {6, nullptr, "SetBluetoothMode"},
+            {7, nullptr, "SetWlanMode"},
+            {8, nullptr, "AcquireDeviceInfoEvent"},
+            {9, nullptr, "GetDeviceInfo"},
+            {10, nullptr, "AddDeviceInfo"},
+            {11, nullptr, "RemoveDeviceInfo"},
+            {12, nullptr, "IncreaseDeviceInfoOrder"},
+            {13, nullptr, "LlrNotify"},
+            {14, nullptr, "EnableRadio"},
+            {15, nullptr, "DisableRadio"},
+            {16, nullptr, "HidDisconnect"},
+            {17, nullptr, "HidSetRetransmissionMode"},
+            {18, nullptr, "AcquireAwakeReqEvent"},
+            {19, nullptr, "AcquireLlrStateEvent"},
+            {20, nullptr, "IsLlrStarted"},
+            {21, nullptr, "EnableSlotSaving"},
+            {22, nullptr, "ProtectDeviceInfo"},
+            {23, nullptr, "AcquireBleScanEvent"},
+            {24, nullptr, "GetBleScanParameterGeneral"},
+            {25, nullptr, "GetBleScanParameterSmartDevice"},
+            {26, nullptr, "StartBleScanForGeneral"},
+            {27, nullptr, "StopBleScanForGeneral"},
+            {28, nullptr, "GetBleScanResultsForGeneral"},
+            {29, nullptr, "StartBleScanForPairedDevice"},
+            {30, nullptr, "StopBleScanForPairedDevice"},
+            {31, nullptr, "StartBleScanForSmartDevice"},
+            {32, nullptr, "StopBleScanForSmartDevice"},
+            {33, nullptr, "GetBleScanResultsForSmartDevice"},
+            {34, nullptr, "AcquireBleConnectionEvent"},
+            {35, nullptr, "BleConnect"},
+            {36, nullptr, "BleOverrideConnection"},
+            {37, nullptr, "BleDisconnect"},
+            {38, nullptr, "BleGetConnectionState"},
+            {39, nullptr, "BleGetGattClientConditionList"},
+            {40, nullptr, "AcquireBlePairingEvent"},
+            {41, nullptr, "BlePairDevice"},
+            {42, nullptr, "BleUnpairDeviceOnBoth"},
+            {43, nullptr, "BleUnpairDevice"},
+            {44, nullptr, "BleGetPairedAddresses"},
+            {45, nullptr, "AcquireBleServiceDiscoveryEvent"},
+            {46, nullptr, "GetGattServices"},
+            {47, nullptr, "GetGattService"},
+            {48, nullptr, "GetGattIncludedServices"},
+            {49, nullptr, "GetBelongingService"},
+            {50, nullptr, "GetGattCharacteristics"},
+            {51, nullptr, "GetGattDescriptors"},
+            {52, nullptr, "AcquireBleMtuConfigEvent"},
+            {53, nullptr, "ConfigureBleMtu"},
+            {54, nullptr, "GetBleMtu"},
+            {55, nullptr, "RegisterBleGattDataPath"},
+            {56, nullptr, "UnregisterBleGattDataPath"},
+            {57, nullptr, "RegisterAppletResourceUserId"},
+            {58, nullptr, "UnregisterAppletResourceUserId"},
+            {59, nullptr, "SetAppletResourceUserId"},
+            {60, nullptr, "Unknown60"},
+            {61, nullptr, "Unknown61"},
+            {62, nullptr, "Unknown62"},
+            {63, nullptr, "Unknown63"},
+            {64, nullptr, "Unknown64"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class BTM_DBG final : public ServiceFramework<BTM_DBG> {
+public:
+    explicit BTM_DBG(Core::System& system_) : ServiceFramework{system_, "btm:dbg"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "AcquireDiscoveryEvent"},
+            {1, nullptr, "StartDiscovery"},
+            {2, nullptr, "CancelDiscovery"},
+            {3, nullptr, "GetDeviceProperty"},
+            {4, nullptr, "CreateBond"},
+            {5, nullptr, "CancelBond"},
+            {6, nullptr, "SetTsiMode"},
+            {7, nullptr, "GeneralTest"},
+            {8, nullptr, "HidConnect"},
+            {9, nullptr, "GeneralGet"},
+            {10, nullptr, "GetGattClientDisconnectionReason"},
+            {11, nullptr, "GetBleConnectionParameter"},
+            {12, nullptr, "GetBleConnectionParameterRequest"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class IBtmSystemCore final : public ServiceFramework<IBtmSystemCore> {
+public:
+    explicit IBtmSystemCore(Core::System& system_) : ServiceFramework{system_, "IBtmSystemCore"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, nullptr, "StartGamepadPairing"},
+            {1, nullptr, "CancelGamepadPairing"},
+            {2, nullptr, "ClearGamepadPairingDatabase"},
+            {3, nullptr, "GetPairedGamepadCount"},
+            {4, nullptr, "EnableRadio"},
+            {5, nullptr, "DisableRadio"},
+            {6, nullptr, "GetRadioOnOff"},
+            {7, nullptr, "AcquireRadioEvent"},
+            {8, nullptr, "AcquireGamepadPairingEvent"},
+            {9, nullptr, "IsGamepadPairingStarted"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+class BTM_SYS final : public ServiceFramework<BTM_SYS> {
+public:
+    explicit BTM_SYS(Core::System& system_) : ServiceFramework{system_, "btm:sys"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0, &BTM_SYS::GetCore, "GetCore"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+
+private:
+    void GetCore(Kernel::HLERequestContext& ctx) {
+        LOG_DEBUG(Service_BTM, "called");
+
+        IPC::ResponseBuilder rb{ctx, 2, 0, 1};
+        rb.Push(RESULT_SUCCESS);
+        rb.PushIpcInterface<IBtmSystemCore>(system);
+    }
+};
+
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system) {
+    std::make_shared<BTM>(system)->InstallAsService(sm);
+    std::make_shared<BTM_DBG>(system)->InstallAsService(sm);
+    std::make_shared<BTM_SYS>(system)->InstallAsService(sm);
+    std::make_shared<BTM_USR>(system)->InstallAsService(sm);
+}
+
+} // namespace Service::BTM

src/core/hle/service/btm/btm.h

@@ -0,0 +1,19 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace Service::SM {
+class ServiceManager;
+}
+
+namespace Core {
+class System;
+};
+
+namespace Service::BTM {
+
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system);
+
+} // namespace Service::BTM

src/core/hle/service/caps/caps.cpp

@@ -0,0 +1,25 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/caps/caps.h"
+#include "core/hle/service/caps/caps_a.h"
+#include "core/hle/service/caps/caps_c.h"
+#include "core/hle/service/caps/caps_sc.h"
+#include "core/hle/service/caps/caps_ss.h"
+#include "core/hle/service/caps/caps_su.h"
+#include "core/hle/service/caps/caps_u.h"
+#include "core/hle/service/service.h"
+
+namespace Service::Capture {
+
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system) {
+    std::make_shared<CAPS_A>(system)->InstallAsService(sm);
+    std::make_shared<CAPS_C>(system)->InstallAsService(sm);
+    std::make_shared<CAPS_U>(system)->InstallAsService(sm);
+    std::make_shared<CAPS_SC>(system)->InstallAsService(sm);
+    std::make_shared<CAPS_SS>(system)->InstallAsService(sm);
+    std::make_shared<CAPS_SU>(system)->InstallAsService(sm);
+}
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps.h

@@ -0,0 +1,96 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::SM {
+class ServiceManager;
+}
+
+namespace Service::Capture {
+
+enum class AlbumImageOrientation {
+    Orientation0 = 0,
+    Orientation1 = 1,
+    Orientation2 = 2,
+    Orientation3 = 3,
+};
+
+enum class AlbumReportOption {
+    Disable = 0,
+    Enable = 1,
+};
+
+enum class ContentType : u8 {
+    Screenshot = 0,
+    Movie = 1,
+    ExtraMovie = 3,
+};
+
+enum class AlbumStorage : u8 {
+    NAND = 0,
+    SD = 1,
+};
+
+struct AlbumFileDateTime {
+    s16 year{};
+    s8 month{};
+    s8 day{};
+    s8 hour{};
+    s8 minute{};
+    s8 second{};
+    s8 uid{};
+};
+static_assert(sizeof(AlbumFileDateTime) == 0x8, "AlbumFileDateTime has incorrect size.");
+
+struct AlbumEntry {
+    u64 size{};
+    u64 application_id{};
+    AlbumFileDateTime datetime{};
+    AlbumStorage storage{};
+    ContentType content{};
+    INSERT_PADDING_BYTES(6);
+};
+static_assert(sizeof(AlbumEntry) == 0x20, "AlbumEntry has incorrect size.");
+
+struct AlbumFileEntry {
+    u64 size{}; // Size of the entry
+    u64 hash{}; // AES256 with hardcoded key over AlbumEntry
+    AlbumFileDateTime datetime{};
+    AlbumStorage storage{};
+    ContentType content{};
+    INSERT_PADDING_BYTES(5);
+    u8 unknown{1}; // Set to 1 on official SW
+};
+static_assert(sizeof(AlbumFileEntry) == 0x20, "AlbumFileEntry has incorrect size.");
+
+struct ApplicationAlbumEntry {
+    u64 size{}; // Size of the entry
+    u64 hash{}; // AES256 with hardcoded key over AlbumEntry
+    AlbumFileDateTime datetime{};
+    AlbumStorage storage{};
+    ContentType content{};
+    INSERT_PADDING_BYTES(5);
+    u8 unknown{1}; // Set to 1 on official SW
+};
+static_assert(sizeof(ApplicationAlbumEntry) == 0x20, "ApplicationAlbumEntry has incorrect size.");
+
+struct ApplicationAlbumFileEntry {
+    ApplicationAlbumEntry entry{};
+    AlbumFileDateTime datetime{};
+    u64 unknown{};
+};
+static_assert(sizeof(ApplicationAlbumFileEntry) == 0x30,
+              "ApplicationAlbumFileEntry has incorrect size.");
+
+/// Registers all Capture services with the specified service manager.
+void InstallInterfaces(SM::ServiceManager& sm, Core::System& system);
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps_a.cpp

@@ -0,0 +1,79 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/caps/caps_a.h"
+
+namespace Service::Capture {
+
+class IAlbumAccessorSession final : public ServiceFramework<IAlbumAccessorSession> {
+public:
+    explicit IAlbumAccessorSession(Core::System& system_)
+        : ServiceFramework{system_, "IAlbumAccessorSession"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {2001, nullptr, "OpenAlbumMovieReadStream"},
+            {2002, nullptr, "CloseAlbumMovieReadStream"},
+            {2003, nullptr, "GetAlbumMovieReadStreamMovieDataSize"},
+            {2004, nullptr, "ReadMovieDataFromAlbumMovieReadStream"},
+            {2005, nullptr, "GetAlbumMovieReadStreamBrokenReason"},
+            {2006, nullptr, "GetAlbumMovieReadStreamImageDataSize"},
+            {2007, nullptr, "ReadImageDataFromAlbumMovieReadStream"},
+            {2008, nullptr, "ReadFileAttributeFromAlbumMovieReadStream"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+CAPS_A::CAPS_A(Core::System& system_) : ServiceFramework{system_, "caps:a"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {0, nullptr, "GetAlbumFileCount"},
+        {1, nullptr, "GetAlbumFileList"},
+        {2, nullptr, "LoadAlbumFile"},
+        {3, nullptr, "DeleteAlbumFile"},
+        {4, nullptr, "StorageCopyAlbumFile"},
+        {5, nullptr, "IsAlbumMounted"},
+        {6, nullptr, "GetAlbumUsage"},
+        {7, nullptr, "GetAlbumFileSize"},
+        {8, nullptr, "LoadAlbumFileThumbnail"},
+        {9, nullptr, "LoadAlbumScreenShotImage"},
+        {10, nullptr, "LoadAlbumScreenShotThumbnailImage"},
+        {11, nullptr, "GetAlbumEntryFromApplicationAlbumEntry"},
+        {12, nullptr, "LoadAlbumScreenShotImageEx"},
+        {13, nullptr, "LoadAlbumScreenShotThumbnailImageEx"},
+        {14, nullptr, "LoadAlbumScreenShotImageEx0"},
+        {15, nullptr, "GetAlbumUsage3"},
+        {16, nullptr, "GetAlbumMountResult"},
+        {17, nullptr, "GetAlbumUsage16"},
+        {18, nullptr, "Unknown18"},
+        {100, nullptr, "GetAlbumFileCountEx0"},
+        {101, nullptr, "GetAlbumFileListEx0"},
+        {202, nullptr, "SaveEditedScreenShot"},
+        {301, nullptr, "GetLastThumbnail"},
+        {302, nullptr, "GetLastOverlayMovieThumbnail"},
+        {401, nullptr, "GetAutoSavingStorage"},
+        {501, nullptr, "GetRequiredStorageSpaceSizeToCopyAll"},
+        {1001, nullptr, "LoadAlbumScreenShotThumbnailImageEx0"},
+        {1002, nullptr, "LoadAlbumScreenShotImageEx1"},
+        {1003, nullptr, "LoadAlbumScreenShotThumbnailImageEx1"},
+        {8001, nullptr, "ForceAlbumUnmounted"},
+        {8002, nullptr, "ResetAlbumMountStatus"},
+        {8011, nullptr, "RefreshAlbumCache"},
+        {8012, nullptr, "GetAlbumCache"},
+        {8013, nullptr, "GetAlbumCacheEx"},
+        {8021, nullptr, "GetAlbumEntryFromApplicationAlbumEntryAruid"},
+        {10011, nullptr, "SetInternalErrorConversionEnabled"},
+        {50000, nullptr, "LoadMakerNoteInfoForDebug"},
+        {60002, nullptr, "OpenAccessorSession"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+CAPS_A::~CAPS_A() = default;
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps_a.h

@@ -0,0 +1,25 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class HLERequestContext;
+}
+
+namespace Service::Capture {
+
+class CAPS_A final : public ServiceFramework<CAPS_A> {
+public:
+    explicit CAPS_A(Core::System& system_);
+    ~CAPS_A() override;
+};
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps_c.cpp

@@ -0,0 +1,90 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/logging/log.h"
+#include "core/hle/ipc_helpers.h"
+#include "core/hle/service/caps/caps_c.h"
+
+namespace Service::Capture {
+
+class IAlbumControlSession final : public ServiceFramework<IAlbumControlSession> {
+public:
+    explicit IAlbumControlSession(Core::System& system_)
+        : ServiceFramework{system_, "IAlbumControlSession"} {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {2001, nullptr, "OpenAlbumMovieReadStream"},
+            {2002, nullptr, "CloseAlbumMovieReadStream"},
+            {2003, nullptr, "GetAlbumMovieReadStreamMovieDataSize"},
+            {2004, nullptr, "ReadMovieDataFromAlbumMovieReadStream"},
+            {2005, nullptr, "GetAlbumMovieReadStreamBrokenReason"},
+            {2006, nullptr, "GetAlbumMovieReadStreamImageDataSize"},
+            {2007, nullptr, "ReadImageDataFromAlbumMovieReadStream"},
+            {2008, nullptr, "ReadFileAttributeFromAlbumMovieReadStream"},
+            {2401, nullptr, "OpenAlbumMovieWriteStream"},
+            {2402, nullptr, "FinishAlbumMovieWriteStream"},
+            {2403, nullptr, "CommitAlbumMovieWriteStream"},
+            {2404, nullptr, "DiscardAlbumMovieWriteStream"},
+            {2405, nullptr, "DiscardAlbumMovieWriteStreamNoDelete"},
+            {2406, nullptr, "CommitAlbumMovieWriteStreamEx"},
+            {2411, nullptr, "StartAlbumMovieWriteStreamDataSection"},
+            {2412, nullptr, "EndAlbumMovieWriteStreamDataSection"},
+            {2413, nullptr, "StartAlbumMovieWriteStreamMetaSection"},
+            {2414, nullptr, "EndAlbumMovieWriteStreamMetaSection"},
+            {2421, nullptr, "ReadDataFromAlbumMovieWriteStream"},
+            {2422, nullptr, "WriteDataToAlbumMovieWriteStream"},
+            {2424, nullptr, "WriteMetaToAlbumMovieWriteStream"},
+            {2431, nullptr, "GetAlbumMovieWriteStreamBrokenReason"},
+            {2433, nullptr, "GetAlbumMovieWriteStreamDataSize"},
+            {2434, nullptr, "SetAlbumMovieWriteStreamDataSize"},
+        };
+        // clang-format on
+
+        RegisterHandlers(functions);
+    }
+};
+
+CAPS_C::CAPS_C(Core::System& system_) : ServiceFramework{system_, "caps:c"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {1, nullptr, "CaptureRawImage"},
+        {2, nullptr, "CaptureRawImageWithTimeout"},
+        {33, &CAPS_C::SetShimLibraryVersion, "SetShimLibraryVersion"},
+        {1001, nullptr, "RequestTakingScreenShot"},
+        {1002, nullptr, "RequestTakingScreenShotWithTimeout"},
+        {1011, nullptr, "NotifyTakingScreenShotRefused"},
+        {2001, nullptr, "NotifyAlbumStorageIsAvailable"},
+        {2002, nullptr, "NotifyAlbumStorageIsUnavailable"},
+        {2011, nullptr, "RegisterAppletResourceUserId"},
+        {2012, nullptr, "UnregisterAppletResourceUserId"},
+        {2013, nullptr, "GetApplicationIdFromAruid"},
+        {2014, nullptr, "CheckApplicationIdRegistered"},
+        {2101, nullptr, "GenerateCurrentAlbumFileId"},
+        {2102, nullptr, "GenerateApplicationAlbumEntry"},
+        {2201, nullptr, "SaveAlbumScreenShotFile"},
+        {2202, nullptr, "SaveAlbumScreenShotFileEx"},
+        {2301, nullptr, "SetOverlayScreenShotThumbnailData"},
+        {2302, nullptr, "SetOverlayMovieThumbnailData"},
+        {60001, nullptr, "OpenControlSession"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+CAPS_C::~CAPS_C() = default;
+
+void CAPS_C::SetShimLibraryVersion(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    const auto library_version{rp.Pop<u64>()};
+    const auto applet_resource_user_id{rp.Pop<u64>()};
+
+    LOG_WARNING(Service_Capture, "(STUBBED) called. library_version={}, applet_resource_user_id={}",
+                library_version, applet_resource_user_id);
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(RESULT_SUCCESS);
+}
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps_c.h

@@ -0,0 +1,28 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class HLERequestContext;
+}
+
+namespace Service::Capture {
+
+class CAPS_C final : public ServiceFramework<CAPS_C> {
+public:
+    explicit CAPS_C(Core::System& system_);
+    ~CAPS_C() override;
+
+private:
+    void SetShimLibraryVersion(Kernel::HLERequestContext& ctx);
+};
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps_sc.cpp

@@ -0,0 +1,40 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/caps/caps_sc.h"
+
+namespace Service::Capture {
+
+CAPS_SC::CAPS_SC(Core::System& system_) : ServiceFramework{system_, "caps:sc"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {1, nullptr, "CaptureRawImage"},
+        {2, nullptr, "CaptureRawImageWithTimeout"},
+        {3, nullptr, "AttachSharedBuffer"},
+        {5, nullptr, "CaptureRawImageToAttachedSharedBuffer"},
+        {210, nullptr, "Unknown210"},
+        {1001, nullptr, "RequestTakingScreenShot"},
+        {1002, nullptr, "RequestTakingScreenShotWithTimeout"},
+        {1003, nullptr, "RequestTakingScreenShotEx"},
+        {1004, nullptr, "RequestTakingScreenShotEx1"},
+        {1009, nullptr, "CancelTakingScreenShot"},
+        {1010, nullptr, "SetTakingScreenShotCancelState"},
+        {1011, nullptr, "NotifyTakingScreenShotRefused"},
+        {1012, nullptr, "NotifyTakingScreenShotFailed"},
+        {1101, nullptr, "SetupOverlayMovieThumbnail"},
+        {1106, nullptr, "Unknown1106"},
+        {1107, nullptr, "Unknown1107"},
+        {1201, nullptr, "OpenRawScreenShotReadStream"},
+        {1202, nullptr, "CloseRawScreenShotReadStream"},
+        {1203, nullptr, "ReadRawScreenShotReadStream"},
+        {1204, nullptr, "Unknown1204"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+CAPS_SC::~CAPS_SC() = default;
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps_sc.h

@@ -0,0 +1,21 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/service/service.h"
+
+namespace Core {
+class System;
+}
+
+namespace Service::Capture {
+
+class CAPS_SC final : public ServiceFramework<CAPS_SC> {
+public:
+    explicit CAPS_SC(Core::System& system_);
+    ~CAPS_SC() override;
+};
+
+} // namespace Service::Capture

src/core/hle/service/caps/caps_ss.cpp

@@ -0,0 +1,26 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/service/caps/caps_ss.h"
+
+namespace Service::Capture {
+
+CAPS_SS::CAPS_SS(Core::System& system_) : ServiceFramework{system_, "caps:ss"} {
+    // clang-format off
+    static const FunctionInfo functions[] = {
+        {201, nullptr, "SaveScreenShot"},
+        {202, nullptr, "SaveEditedScreenShot"},
+        {203, nullptr, "SaveScreenShotEx0"},
+        {204, nullptr, "SaveEditedScreenShotEx0"},
+        {206, nullptr, "Unknown206"},
+        {208, nullptr, "SaveScreenShotOfMovieEx1"},
+    };
+    // clang-format on
+
+    RegisterHandlers(functions);
+}
+
+CAPS_SS::~CAPS_SS() = default;
+
+} // namespace Service::Capture