[fs] debug_knobs controlled delay (us) for IStorage::Read

CMakeLists.txt

@@ -69,26 +69,6 @@ if (YUZU_STATIC_ROOM)
     set(fmt_FORCE_BUNDLED ON)
 endif()
 
-# my unity/jumbo build
-option(ENABLE_UNITY_BUILD "Enable Unity/Jumbo build" OFF)
-
-# 0 compiles all files in
-# not ideal, but if you're going gung-ho with a unity build, expect failure
-# MSVC physically can't compile that many files into one TU, so we limit it to 100.
-if (MSVC)
-    set(_unity_default 100)
-else()
-    set(_unity_default 0)
-endif()
-
-set(UNITY_BATCH_SIZE ${_unity_default} CACHE STRING "Unity build batch size")
-
-if(MSVC AND ENABLE_UNITY_BUILD)
-    message(STATUS "Unity build")
-    # Unity builds need big objects for MSVC...
-    add_compile_options(/bigobj)
-endif()
-
 # qt stuff
 option(ENABLE_QT "Enable the Qt frontend" ON)
 option(ENABLE_QT_TRANSLATION "Enable translations for the Qt frontend" OFF)

docs/Options.md

@@ -39,7 +39,6 @@ These options control dependencies.
   - This option is subject for removal.
 - `YUZU_TESTS` (ON) Compile tests - requires Catch2
 - `ENABLE_LTO` (OFF) Enable link-time optimization
-- `ENABLE_UNITY_BUILD` (OFF) Enables "Unity/Jumbo" builds
   - Not recommended on Windows
   - UNIX may be better off appending `-flto=thin` to compiler args
 - `USE_FASTER_LINKER` (OFF) Check if a faster linker is available

src/CMakeLists.txt

@@ -7,11 +7,6 @@
 # Enable modules to include each other's files
 include_directories(.)
 
-if (ENABLE_UNITY_BUILD)
-    set(CMAKE_UNITY_BUILD ON)
-    set(CMAKE_UNITY_BUILD_BATCH_SIZE ${UNITY_BATCH_SIZE})
-endif()
-
 # Dynarmic
 if ((ARCHITECTURE_x86_64 OR ARCHITECTURE_arm64 OR ARCHITECTURE_riscv64 OR ARCHITECTURE_loongarch64) AND NOT YUZU_STATIC_ROOM)
     add_subdirectory(dynarmic)

src/android/app/build.gradle.kts

@@ -188,7 +188,7 @@ android {
         create("mainline") {
             dimension = "version"
             isDefault = true
-            minSdk = 33
+            minSdk = 30
 
             manifestPlaceholders += mapOf("appNameBase" to "Eden")
             resValue("string", "app_name_suffixed", "Eden")

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/StringSetting.kt

@@ -11,6 +11,7 @@ import org.yuzu.yuzu_emu.utils.NativeConfig
 enum class StringSetting(override val key: String) : AbstractStringSetting {
     DRIVER_PATH("driver_path"),
     DEVICE_NAME("device_name"),
+    LOG_FILTER("log_filter"),
     PROGRAM_ARGS("program_args"),
 
     WEB_TOKEN("eden_token"),

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SettingsItem.kt

@@ -1032,6 +1032,13 @@ abstract class SettingsItem(
                     descriptionId = R.string.use_auto_stub_description
                 )
             )
+            put(
+                StringInputSetting(
+                    StringSetting.LOG_FILTER,
+                    titleId = R.string.log_filter,
+                    descriptionId = R.string.log_filter_description
+                )
+            )
             put(
                 SpinBoxSetting(
                     ShortSetting.DEBUG_KNOBS,

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsFragmentPresenter.kt

@@ -1322,6 +1322,7 @@ class SettingsFragmentPresenter(
                 add(HeaderSetting(R.string.log))
 
                 add(BooleanSetting.DEBUG_FLUSH_BY_LINE.key)
+                add(StringSetting.LOG_FILTER.key)
             }
 
             add(HeaderSetting(R.string.general))

src/android/app/src/main/jni/native.cpp

@@ -76,7 +76,6 @@ extern "C" {
 #include "core/frontend/applets/software_keyboard.h"
 #include "core/frontend/applets/web_browser.h"
 #include "common/android/applets/web_browser.h"
-#include "core/file_sys/common_funcs.h"
 #include "core/hle/service/am/applet_manager.h"
 #include "core/hle/service/am/frontend/applets.h"
 #include "core/hle/service/filesystem/filesystem.h"
@@ -312,23 +311,11 @@ Core::SystemResultStatus EmulationSession::InitializeEmulation(const std::string
     ConfigureFilesystemProvider(filepath);
 
     // Load the ROM.
-    const u64 previous_program_id =
-        program_index != 0 && m_next_program_id.load() >
-                                  static_cast<u64>(Service::AM::AppletProgramId::MaxProgramId)
-            ? m_next_program_id.load()
-            : 0;
-
     Service::AM::FrontendAppletParameters params{
-        .program_id = previous_program_id,
         .applet_id = static_cast<Service::AM::AppletId>(m_applet_id),
         .launch_type = frontend_initiated ? Service::AM::LaunchType::FrontendInitiated
                                           : Service::AM::LaunchType::ApplicationInitiated,
         .program_index = static_cast<s32>(program_index),
-        .previous_program_index =
-            previous_program_id != 0
-                ? static_cast<s32>(previous_program_id -
-                                   FileSys::GetBaseTitleID(previous_program_id))
-                : -1,
     };
 
     m_load_result = m_system.Load(EmulationSession::GetInstance().Window(), filepath, params);
@@ -341,12 +328,8 @@ Core::SystemResultStatus EmulationSession::InitializeEmulation(const std::string
     m_system.GetCpuManager().OnGpuReady();
     m_system.RegisterExitCallback([&] { HaltEmulation(); });
 
-    m_system.RegisterApplicationChangedCallback(
-        [&](u64 changed_program_id) { RequestDiskShaderCacheReload(changed_program_id); });
-
     // Register an ExecuteProgram callback such that Core can execute a sub-program
     m_system.RegisterExecuteProgramCallback([&](std::size_t program_index_) {
-        m_next_program_id = m_system.GetApplicationProcessProgramID();
         m_next_program_index = program_index_;
         EmulationSession::GetInstance().HaltEmulation();
     });
@@ -424,58 +407,20 @@ void EmulationSession::RunEmulation() {
     }
 
     while (true) {
-        std::optional<u64> reload_title;
         {
             [[maybe_unused]] std::unique_lock lock(m_mutex);
-            if (m_cv.wait_for(lock, std::chrono::milliseconds(800), [&]() {
+            if (m_cv.wait_for(lock, std::chrono::milliseconds(800),
-                    return !m_is_running || m_pending_shader_cache_title.has_value();
+                              [&]() { return !m_is_running; })) {
-                })) {
+                // Emulation halted.
-                if (!m_is_running) {
+                break;
-                    break;
-                }
-                reload_title = std::exchange(m_pending_shader_cache_title, std::nullopt);
             }
         }
-
-        if (reload_title.has_value())
-            ReloadDiskShaderCache(*reload_title);
     }
 
     // Reset current applet ID.
     m_applet_id = static_cast<int>(Service::AM::AppletId::Application);
 }
 
-void EmulationSession::RequestDiskShaderCacheReload(u64 program_id) {
-    {
-        std::scoped_lock lock(m_mutex);
-        m_pending_shader_cache_title = program_id;
-    }
-    m_cv.notify_one();
-}
-
-void EmulationSession::ReloadDiskShaderCache(u64 program_id) {
-    if (!Settings::values.use_disk_shader_cache.GetValue())
-        return;
-
-    LOG_INFO(Frontend, "Reloading disk shader cache for {:016X}", program_id);
-
-    const bool was_paused = m_is_paused;
-
-    m_system.Pause();
-    m_system.GPU().WaitForIdle();
-    m_system.GPU().ObtainContext();
-
-    LoadDiskCacheProgress(VideoCore::LoadCallbackStage::Prepare, 0, 0);
-    m_system.Renderer().ReadRasterizer()->LoadDiskResources(program_id, std::stop_token{},
-                                                            LoadDiskCacheProgress);
-    LoadDiskCacheProgress(VideoCore::LoadCallbackStage::Complete, 0, 0);
-
-    m_system.GPU().ReleaseContext();
-
-    if (!was_paused)
-        m_system.Run();
-}
-
 Common::Android::SoftwareKeyboard::AndroidKeyboard* EmulationSession::SoftwareKeyboard() {
     return m_software_keyboard;
 }

src/android/app/src/main/jni/native.h

@@ -4,8 +4,6 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include <optional>
-
 #include <android/native_window_jni.h>
 #include "common/android/applets/software_keyboard.h"
 #include "core/core.h"
@@ -46,7 +44,6 @@ public:
     void HaltEmulation();
     void RunEmulation();
     void ShutdownEmulation();
-    void RequestDiskShaderCacheReload(u64 program_id);
 
     const Core::PerfStatsResults& PerfStats();
     int ShadersBuilding();
@@ -68,7 +65,6 @@ private:
     static void LoadDiskCacheProgress(VideoCore::LoadCallbackStage stage, int progress, int max);
     static void OnEmulationStopped(Core::SystemResultStatus result);
     static void ChangeProgram(std::size_t program_index);
-    void ReloadDiskShaderCache(u64 program_id);
 
 private:
     // Window management
@@ -87,7 +83,6 @@ private:
     Common::Android::SoftwareKeyboard::AndroidKeyboard* m_software_keyboard{};
     std::unique_ptr<FileSys::ManualContentProvider> m_manual_provider;
     int m_applet_id{1};
-    std::optional<u64> m_pending_shader_cache_title;
 
     // GPU driver parameters
     std::shared_ptr<Common::DynamicLibrary> m_vulkan_library;
@@ -98,5 +93,4 @@ private:
 
     // Program index for next boot
     std::atomic<s32> m_next_program_index = -1;
-    std::atomic<u64> m_next_program_id = 0;
 };

src/android/app/src/main/res/values/strings.xml

@@ -636,6 +636,8 @@
     <string name="log">Logging</string>
     <string name="flush_by_line">Flush debug logs by line</string>
     <string name="flush_by_line_description">Flushes debugging logs on each line written, making debugging easier in cases of crashing or freezing.</string>
+    <string name="log_filter">Log filter</string>
+    <string name="log_filter_description">Controls Eden\'s log categories. Example: *:Info Service.LM:Debug</string>
 
     <!-- GPU Logging strings -->
     <string name="gpu_logging_header">GPU Logging</string>

src/audio_core/adsp/apps/opus/opus_decode_object.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -8,11 +5,17 @@
 #include "common/assert.h"
 
 namespace AudioCore::ADSP::OpusDecoder {
+namespace {
+bool IsValidChannelCount(u32 channel_count) {
+    return channel_count == 1 || channel_count == 2;
+}
+} // namespace
 
 u32 OpusDecodeObject::GetWorkBufferSize(u32 channel_count) {
-    if (channel_count == 1 || channel_count == 2)
+    if (!IsValidChannelCount(channel_count)) {
         return 0;
-    return u32(sizeof(OpusDecodeObject)) + opus_decoder_get_size(channel_count);
+    }
+    return static_cast<u32>(sizeof(OpusDecodeObject)) + opus_decoder_get_size(channel_count);
 }
 
 OpusDecodeObject& OpusDecodeObject::Initialize(u64 buffer, u64 buffer2) {

src/audio_core/adsp/apps/opus/opus_decoder.cpp

@@ -22,6 +22,10 @@ namespace AudioCore::ADSP::OpusDecoder {
 namespace {
 constexpr size_t OpusStreamCountMax = 255;
 
+bool IsValidChannelCount(u32 channel_count) {
+    return channel_count == 1 || channel_count == 2;
+}
+
 bool IsValidMultiStreamChannelCount(u32 channel_count) {
     return channel_count <= OpusStreamCountMax;
 }

src/audio_core/adsp/apps/opus/opus_multistream_decode_object.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -10,12 +7,13 @@
 namespace AudioCore::ADSP::OpusDecoder {
 
 namespace {
-constexpr u32 OpusStreamCountMax = 255;
+bool IsValidChannelCount(u32 channel_count) {
+    return channel_count == 1 || channel_count == 2;
+}
 
 bool IsValidStreamCounts(u32 total_stream_count, u32 stereo_stream_count) {
-    return total_stream_count > 0 && total_stream_count <= OpusStreamCountMax &&
+    return total_stream_count > 0 && static_cast<s32>(stereo_stream_count) >= 0 &&
-           static_cast<s32>(stereo_stream_count) >= 0 &&
+           stereo_stream_count <= total_stream_count && IsValidChannelCount(total_stream_count);
-           stereo_stream_count <= total_stream_count;
 }
 } // namespace
 

src/audio_core/in/audio_in.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/audio_core/in/audio_in_system.cpp

@@ -14,16 +14,14 @@
 #include "core/core_timing.h"
 #include "core/hle/kernel/k_event.h"
 
-namespace AudioCore::AudioIn {
-
 // See texture_cache/util.h
 template<typename T, size_t N>
 #if BOOST_VERSION >= 108100 || __GNUC__ > 12
-[[nodiscard]] static inline boost::container::static_vector<T, N> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
+[[nodiscard]] boost::container::static_vector<T, N> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
     return v;
 }
 #else
-[[nodiscard]] static inline std::vector<T> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
+[[nodiscard]] std::vector<T> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
     std::vector<T> u;
     for (auto const& e : v)
         u.push_back(e);
@@ -31,6 +29,8 @@ template<typename T, size_t N>
 }
 #endif
 
+namespace AudioCore::AudioIn {
+
 System::System(Core::System& system_, Kernel::KEvent* event_, const size_t session_id_)
     : system{system_}, buffer_event{event_},
       session_id{session_id_}, session{std::make_unique<DeviceSession>(system_)} {}

src/audio_core/opus/hardware_opus.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -108,7 +105,7 @@ Result HardwareOpus::InitializeMultiStreamDecodeObject(u32 sample_rate, u32 chan
     shared_memory.host_send_data[4] = total_stream_count;
     shared_memory.host_send_data[5] = stereo_stream_count;
 
-    ASSERT(channel_count <= shared_memory.channel_mapping.size());
+    ASSERT(channel_count <= MaxChannels);
     std::memcpy(shared_memory.channel_mapping.data(), mappings, channel_count * sizeof(u8));
 
     opus_decoder.Send(ADSP::Direction::DSP,

src/audio_core/out/audio_out_system.cpp

@@ -14,15 +14,14 @@
 #include "core/core_timing.h"
 #include "core/hle/kernel/k_event.h"
 
-namespace AudioCore::AudioOut {
 // See texture_cache/util.h
 template<typename T, size_t N>
 #if BOOST_VERSION >= 108100 || __GNUC__ > 12
-[[nodiscard]] static inline boost::container::static_vector<T, N> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
+[[nodiscard]] boost::container::static_vector<T, N> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
     return v;
 }
 #else
-[[nodiscard]] static inline std::vector<T> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
+[[nodiscard]] std::vector<T> FixStaticVectorADL(const boost::container::static_vector<T, N>& v) {
     std::vector<T> u;
     for (auto const& e : v)
         u.push_back(e);
@@ -30,6 +29,8 @@ template<typename T, size_t N>
 }
 #endif
 
+namespace AudioCore::AudioOut {
+
 System::System(Core::System& system_, Kernel::KEvent* event_, size_t session_id_)
     : system{system_}, buffer_event{event_},
       session_id{session_id_}, session{std::make_unique<DeviceSession>(system_)} {}

src/audio_core/renderer/command/effect/capture.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
@@ -16,7 +16,7 @@ namespace AudioCore::Renderer {
  * @param memory   - Core memory for writing.
  * @param aux_info - Memory address pointing to the AuxInfo to reset.
  */
-static void CaptureResetAuxBufferDsp(Core::Memory::Memory& memory, const CpuAddr aux_info) {
+static void ResetAuxBufferDsp(Core::Memory::Memory& memory, const CpuAddr aux_info) {
     if (aux_info == 0) {
         LOG_ERROR(Service_Audio, "Aux info is 0!");
         return;
@@ -134,7 +134,7 @@ void CaptureCommand::Process(const AudioRenderer::CommandListProcessor& processo
         WriteAuxBufferDsp(*processor.memory, send_buffer_info, send_buffer, count_max, input_buffer,
                           processor.sample_count, write_offset, update_count);
     } else {
-        CaptureResetAuxBufferDsp(*processor.memory, send_buffer_info);
+        ResetAuxBufferDsp(*processor.memory, send_buffer_info);
     }
 }
 

src/audio_core/sink/sdl3_sink.cpp

@@ -19,23 +19,6 @@
 namespace AudioCore::Sink {
 
 namespace {
-
-[[nodiscard]] bool InitializeAudio() {
-    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
-        // See https://github.com/PCSX2/pcsx2/pull/12312
-        // "SDL and cubeb backends previously resulted in different names for the output which
-        // caused them be identified as different applications by the OS."
-        //
-        // Keep in sync with cubeb_sink.cpp name.
-        SDL_SetHint("SDL_AUDIO_DEVICE_APP_NAME", "yuzu Latency Getter");
-        if (!SDL_InitSubSystem(SDL_INIT_AUDIO)) {
-            LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError());
-            return false;
-        }
-    }
-    return true;
-}
-
 SDL_AudioDeviceID FindAudioDeviceByName(const std::string& device_name, bool capture) {
     int device_count = 0;
     SDL_AudioDeviceID* devices = capture ? SDL_GetAudioRecordingDevices(&device_count)
@@ -221,14 +204,20 @@ private:
 };
 
 SDLSink::SDLSink(std::string_view target_device_name) {
-    if (InitializeAudio()) {
+    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
-        if (target_device_name != auto_device_name && !target_device_name.empty()) {
+        if (!SDL_InitSubSystem(SDL_INIT_AUDIO)) {
-            output_device = target_device_name;
+            LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError());
-        } else {
+            return;
-            output_device.clear();
         }
-        device_channels = 2;
     }
+
+    if (target_device_name != auto_device_name && !target_device_name.empty()) {
+        output_device = target_device_name;
+    } else {
+        output_device.clear();
+    }
+
+    device_channels = 2;
 }
 
 SDLSink::~SDLSink() = default;
@@ -276,10 +265,15 @@ void SDLSink::SetSystemVolume(f32 volume) {
 }
 
 std::vector<std::string> ListSDLSinkDevices(bool capture) {
-    if (!InitializeAudio())
-        return {}; //no devices
-
     std::vector<std::string> device_list;
+
+    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
+        if (!SDL_InitSubSystem(SDL_INIT_AUDIO)) {
+            LOG_CRITICAL(Audio_Sink, "SDL_InitSubSystem audio failed: {}", SDL_GetError());
+            return {};
+        }
+    }
+
     int device_count = 0;
     SDL_AudioDeviceID* devices =
         capture ? SDL_GetAudioRecordingDevices(&device_count)
@@ -310,8 +304,13 @@ bool IsSDLSuitable() {
     return false;
 #else
     // Check SDL can init
-    if (!InitializeAudio()!
+    if (!SDL_WasInit(SDL_INIT_AUDIO)) {
-        return false;
+        if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
+            LOG_ERROR(Audio_Sink, "SDL failed to init, it is not suitable. Error: {}",
+                      SDL_GetError());
+            return false;
+        }
+    }
 
     // We can set any latency frequency we want with SDL, so no need to check that.
 

src/common/cityhash.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: 2011 Google, Inc.
 // SPDX-FileContributor: Geoff Pike
 // SPDX-FileContributor: Jyrki Alakuijala
@@ -30,6 +27,8 @@
 #define WORDS_BIGENDIAN 1
 #endif
 
+using namespace std;
+
 namespace Common {
 
 static u64 unaligned_load64(const char* p) {
@@ -136,18 +135,18 @@ static u64 HashLen17to32(const char* s, size_t len) {
 
 // Return a 16-byte hash for 48 bytes.  Quick and dirty.
 // Callers do best to use "random-looking" values for a and b.
-static std::pair<u64, u64> WeakHashLen32WithSeeds(u64 w, u64 x, u64 y, u64 z, u64 a, u64 b) {
+static pair<u64, u64> WeakHashLen32WithSeeds(u64 w, u64 x, u64 y, u64 z, u64 a, u64 b) {
     a += w;
     b = Rotate(b + a + z, 21);
     u64 c = a;
     a += x;
     a += y;
     b += Rotate(a, 44);
-    return std::make_pair(a + z, b + c);
+    return make_pair(a + z, b + c);
 }
 
 // Return a 16-byte hash for s[0] ... s[31], a, and b.  Quick and dirty.
-static std::pair<u64, u64> WeakHashLen32WithSeeds(const char* s, u64 a, u64 b) {
+static pair<u64, u64> WeakHashLen32WithSeeds(const char* s, u64 a, u64 b) {
     return WeakHashLen32WithSeeds(Fetch64(s), Fetch64(s + 8), Fetch64(s + 16), Fetch64(s + 24), a,
                                   b);
 }
@@ -190,8 +189,8 @@ u64 CityHash64(const char* s, size_t len) {
     u64 x = Fetch64(s + len - 40);
     u64 y = Fetch64(s + len - 16) + Fetch64(s + len - 56);
     u64 z = HashLen16(Fetch64(s + len - 48) + len, Fetch64(s + len - 24));
-    std::pair<u64, u64> v = WeakHashLen32WithSeeds(s + len - 64, len, z);
+    pair<u64, u64> v = WeakHashLen32WithSeeds(s + len - 64, len, z);
-    std::pair<u64, u64> w = WeakHashLen32WithSeeds(s + len - 32, y + k1, x);
+    pair<u64, u64> w = WeakHashLen32WithSeeds(s + len - 32, y + k1, x);
     x = x * k1 + Fetch64(s);
 
     // Decrease len to the nearest multiple of 64, and operate on 64-byte chunks.
@@ -259,7 +258,7 @@ u128 CityHash128WithSeed(const char* s, size_t len, u128 seed) {
 
     // We expect len >= 128 to be the common case.  Keep 56 bytes of state:
     // v, w, x, y, and z.
-    std::pair<u64, u64> v, w;
+    pair<u64, u64> v, w;
     u64 x = seed[0];
     u64 y = seed[1];
     u64 z = len * k1;

src/common/httplib.h

@@ -16,5 +16,3 @@
 #ifdef __GNUC__
 #pragma GCC diagnostic pop
 #endif
-
-#undef INVALID_SOCKET

src/common/logging.cpp

@@ -224,7 +224,7 @@ struct ColorConsoleBackend final : public Backend {
             auto const df = GetDirectFormatArgs(entry);
             // more restrictive, because take for example this simple prelude:
             // [  50.872256] Config <Info> common/settings.cpp:142:LogSettings:
-            char buffer[256];
+            char buffer[128];
             auto result = fmt::format_to_n(buffer, sizeof(buffer) - 1, "\x1b{}[{:4d}.{:06d}] {} <{}> {}:{}:{}: ", color_str, df.time_seconds, df.time_fractional, df.class_name, df.level_name, entry.filename, entry.line_num, entry.function, entry.message);
             std::fwrite(buffer, 1, (std::min)(sizeof(buffer) - 1, result.size), stdout);
             std::fwrite(entry.message, 1, entry.message_len, stdout);
@@ -425,14 +425,14 @@ void SetColorConsoleBackendEnabled(bool enabled) {
 
 void FmtLogMessageImpl(Class log_class, Level log_level, const char* filename, unsigned int line_num, const char* function, fmt::string_view format, const fmt::format_args& args) {
     if (logging_instance && logging_instance->filter.CheckMessage(log_class, log_level)) {
-        auto const flush = ::Settings::values.log_flush_line.GetValue();
         char buffer[BUFSIZ];
         auto result = fmt::vformat_to_n(buffer, sizeof(buffer) - 1, format, args);
-        buffer[(std::min)(result.size, sizeof(buffer) - 1)] = '\0';
+        buffer[result.size] = '\0';
+        auto const flush = ::Settings::values.log_flush_line.GetValue();
         logging_instance->ForEachBackend([=](Backend& backend) {
             backend.Write(Entry{
                 .message = buffer,
-                .message_len = (std::min)(result.size, sizeof(buffer) - 1),
+                .message_len = (std::min)(sizeof(buffer) - 1, result.size),
                 .timestamp = std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - logging_instance->time_origin),
                 .log_class = log_class,
                 .log_level = log_level,

src/common/settings.cpp

@@ -132,9 +132,11 @@ void LogSettings() {
             }
         }
     }
-    LOG_INFO(Config, "Eden Configuration:");
+
+    std::string settings_str{};
     for (auto const& e : settings_list)
-        LOG_INFO(Config, "{}", e);
+        settings_str += e;
+    LOG_INFO(Config, "Eden Configuration:\n{}", settings_str);
 #define LOG_PATH(NAME) \
     LOG_INFO(Config, #NAME ": {}", Common::FS::PathToUTF8String(Common::FS::GetEdenPath(Common::FS::EdenPath::NAME)))
     LOG_PATH(CacheDir);

src/common/settings.h

@@ -904,7 +904,7 @@ struct Values {
                                            0,
                                            65535,
                                            "debug_knobs",
-                                           Category::Debugging,
+                                           Category::System,
                                            Specialization::Countable,
                                            true,
                                            true};

src/common/stb.cpp

@@ -7,4 +7,6 @@
 #define STB_IMAGE_IMPLEMENTATION 1
 #define STB_IMAGE_RESIZE_IMPLEMENTATION 1
 #define STB_IMAGE_WRITE_IMPLEMENTATION 1
+#define STBI_ONLY_JPEG 1
+
 #include "common/stb.h"

src/common/stb.h

@@ -7,7 +7,6 @@
 #pragma once
 
 #define STBI_ONLY_JPEG 1
-#define STBI_WRITE_NO_STDIO 1
 #include <stb_image.h>
 #include <stb_image_resize.h>
 #include <stb_image_write.h>

src/core/arm/arm_interface.cpp

@@ -3,14 +3,158 @@
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
+#include <algorithm>
+#include <array>
+#include <cctype>
+#include <string>
+#include <string_view>
+#include <vector>
+
 #include "common/logging.h"
 #include "core/arm/arm_interface.h"
 #include "core/arm/debug.h"
 #include "core/core.h"
+#include "core/hle/kernel/k_memory_block.h"
 #include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/svc_types.h"
 
 namespace Core {
 
+namespace {
+
+constexpr std::size_t GuestStringProbeBytes = 0x100;
+constexpr std::size_t StackProbeWords = 96;
+constexpr std::size_t MaxGuestStringLogs = 16;
+constexpr std::size_t MaxBacktraceFrames = 64;
+constexpr std::size_t MinGuestStringLength = 4;
+
+std::string SanitizeGuestString(std::string_view text) {
+    std::string sanitized;
+    sanitized.reserve(text.size());
+
+    for (const char ch : text) {
+        switch (ch) {
+        case '\\':
+            sanitized += "\\\\";
+            break;
+        case '"':
+            sanitized += "\\\"";
+            break;
+        default:
+            sanitized += ch;
+            break;
+        }
+    }
+
+    return sanitized;
+}
+
+bool IsUsefulGuestString(std::string_view text) {
+    if (text.size() < MinGuestStringLength) {
+        return false;
+    }
+
+    std::size_t alpha_numeric_count{};
+    for (const char ch : text) {
+        const auto byte = static_cast<unsigned char>(ch);
+        if (std::isprint(byte) == 0) {
+            return false;
+        }
+
+        if (std::isalnum(byte) != 0) {
+            alpha_numeric_count++;
+        }
+    }
+
+    return alpha_numeric_count > 0;
+}
+
+bool QueryGuestMemoryInfo(Kernel::KProcess* process, u64 address,
+                          Kernel::Svc::MemoryInfo* out_info) {
+    if (address == 0) {
+        return false;
+    }
+
+    Kernel::KMemoryInfo mem_info{};
+    Kernel::Svc::PageInfo page_info{};
+    if (process->GetPageTable().QueryInfo(&mem_info, &page_info, address).IsFailure()) {
+        return false;
+    }
+
+    *out_info = mem_info.GetSvcMemoryInfo();
+    return true;
+}
+
+void LogGuestStringCandidate(Kernel::KProcess* process, u64 address, std::string_view label,
+                             std::vector<u64>& logged_strings) {
+    if (logged_strings.size() >= MaxGuestStringLogs) {
+        return;
+    }
+    if (std::find(logged_strings.begin(), logged_strings.end(), address) != logged_strings.end()) {
+        return;
+    }
+
+    Kernel::Svc::MemoryInfo mem_info{};
+    if (!QueryGuestMemoryInfo(process, address, &mem_info)) {
+        return;
+    }
+    if (mem_info.state == Kernel::Svc::MemoryState::Free ||
+        mem_info.permission == Kernel::Svc::MemoryPermission::None) {
+        return;
+    }
+
+    if (address < mem_info.base_address) {
+        return;
+    }
+
+    const u64 region_offset = address - mem_info.base_address;
+    if (region_offset >= mem_info.size) {
+        return;
+    }
+
+    const u64 available_bytes = mem_info.size - region_offset;
+    const auto probe_size =
+        static_cast<std::size_t>(std::min<u64>(GuestStringProbeBytes, available_bytes));
+    if (probe_size < MinGuestStringLength ||
+        !process->GetMemory().IsValidVirtualAddressRange(address, probe_size)) {
+        return;
+    }
+
+    const auto text = process->GetMemory().ReadCString(address, probe_size);
+    if (!IsUsefulGuestString(text)) {
+        return;
+    }
+
+    logged_strings.push_back(address);
+    LOG_ERROR(Core_ARM, "Guest backtrace string {:02}: {}={:016X} \"{}\"",
+              logged_strings.size() - 1, label, address, SanitizeGuestString(text));
+}
+
+void LogStackStringCandidates(Kernel::KProcess* process, u64 base, std::string_view label,
+                              std::vector<u64>& logged_strings) {
+    if (base == 0) {
+        return;
+    }
+
+    auto& memory = process->GetMemory();
+    for (std::size_t i = 0; i < StackProbeWords; i++) {
+        const u64 address = base + i * sizeof(u64);
+        if (!memory.IsValidVirtualAddressRange(address, sizeof(u64))) {
+            break;
+        }
+
+        u64 value{};
+        if (!memory.ReadBlock(address, &value, sizeof(value))) {
+            continue;
+        }
+
+        LogGuestStringCandidate(process, value, fmt::format("{}+{:03X}", label, i * sizeof(u64)),
+                                logged_strings);
+    }
+}
+
+} // namespace
+
 void ArmInterface::LogBacktrace(Kernel::KProcess* process) const {
     Kernel::Svc::ThreadContext ctx;
     this->GetContext(ctx);
@@ -26,21 +170,45 @@ void ArmInterface::LogBacktrace(Kernel::KProcess* process) const {
         ctx.r[28], ctx.fp, ctx.lr, ctx.sp,
     };
 
-    std::string msg = fmt::format("Backtrace @ PC={:016X}\n", ctx.pc);
+    LOG_ERROR(Core_ARM,
-    for (size_t i = 0; i < 32; i += 4)
+              "Guest backtrace context: process=\"{}\" pid={} program_id={:016X} pc={:016X} "
-        msg += fmt::format("R{:02}={:016X} R{:02}={:016X} R{:02}={:016X} R{:02}={:016X}\n",
+              "lr={:016X} fp={:016X} sp={:016X} pstate={:08X}",
-            i + 0, xreg[i + 0], i + 1, xreg[i + 1],
+              process->GetName(), process->GetProcessId(), process->GetProgramId(), ctx.pc,
-            i + 2, xreg[i + 2], i + 3, xreg[i + 3]);
+              ctx.lr, ctx.fp, ctx.sp, ctx.pstate);
-    for (size_t i = 0; i < 32; i += 2)
+
-        msg += fmt::format("V{:02}={:016X}_{:016X} V{:02}={:016X}_{:016X}\n",
+    std::vector<u64> logged_strings;
-            i + 0, ctx.v[i + 0][0], ctx.v[i + 0][1],
+    for (size_t i = 0; i < xreg.size(); i++) {
-            i + 1, ctx.v[i + 1][0], ctx.v[i + 1][1]);
+        LogGuestStringCandidate(process, xreg[i], fmt::format("R{:02}", i), logged_strings);
-    msg += fmt::format("PSTATE={:08X} FPCR={:08X} FPSR={:08X} TPIDR={:016X}\n", ctx.pstate, ctx.fpcr, ctx.fpsr, ctx.tpidr);
+    }
-    msg += fmt::format("{:20}{:20}{:20}{:20}{}\n", "Module", "Address", "Original Address", "Offset", "Symbol");
+    LogStackStringCandidates(process, ctx.sp, "SP", logged_strings);
+    if (ctx.fp != ctx.sp) {
+        LogStackStringCandidates(process, ctx.fp, "FP", logged_strings);
+    }
+    if (logged_strings.empty()) {
+        LOG_ERROR(Core_ARM, "Guest backtrace strings: none found in registers or stack");
+    }
+
     auto const backtrace = GetBacktraceFromContext(process, ctx);
-    for (auto const& entry : backtrace)
+    for (size_t i = 0; i < std::min(backtrace.size(), MaxBacktraceFrames); i++) {
-        msg += fmt::format("{:20}{:016X}    {:016X}    {:016X}    {}\n", entry.module, entry.address, entry.original_address, entry.offset, entry.name);
+        const auto& entry = backtrace[i];
-    LOG_ERROR(Core_ARM, "{}", msg);
+        if (entry.original_address == 0) {
+            break;
+        }
+
+        if (entry.name.empty()) {
+            LOG_ERROR(Core_ARM, "Guest backtrace frame {:03}: {}+0x{:X} pc={:016X} mapped={:016X}",
+                      i, entry.module, entry.offset, entry.original_address, entry.address);
+        } else {
+            LOG_ERROR(Core_ARM,
+                      "Guest backtrace frame {:03}: {}+0x{:X} pc={:016X} mapped={:016X} symbol={}",
+                      i, entry.module, entry.offset, entry.original_address, entry.address,
+                      entry.name);
+        }
+    }
+    if (backtrace.size() > MaxBacktraceFrames) {
+        LOG_ERROR(Core_ARM, "Guest backtrace truncated: logged={} total={}", MaxBacktraceFrames,
+                  backtrace.size());
+    }
 }
 
 const Kernel::DebugWatchpoint* ArmInterface::MatchingWatchpoint(

src/core/arm/dynarmic/arm_dynarmic.h

@@ -7,18 +7,19 @@
 #pragma once
 
 #include <dynarmic/interface/halt_reason.h>
+
 #include "core/arm/arm_interface.h"
 
 namespace Core {
 
-inline constexpr Dynarmic::HaltReason StepThread = Dynarmic::HaltReason::Step;
+constexpr Dynarmic::HaltReason StepThread = Dynarmic::HaltReason::Step;
-inline constexpr Dynarmic::HaltReason DataAbort = Dynarmic::HaltReason::MemoryAbort;
+constexpr Dynarmic::HaltReason DataAbort = Dynarmic::HaltReason::MemoryAbort;
-inline constexpr Dynarmic::HaltReason BreakLoop = Dynarmic::HaltReason::UserDefined2;
+constexpr Dynarmic::HaltReason BreakLoop = Dynarmic::HaltReason::UserDefined2;
-inline constexpr Dynarmic::HaltReason SupervisorCall = Dynarmic::HaltReason::UserDefined3;
+constexpr Dynarmic::HaltReason SupervisorCall = Dynarmic::HaltReason::UserDefined3;
-inline constexpr Dynarmic::HaltReason InstructionBreakpoint = Dynarmic::HaltReason::UserDefined4;
+constexpr Dynarmic::HaltReason InstructionBreakpoint = Dynarmic::HaltReason::UserDefined4;
-inline constexpr Dynarmic::HaltReason PrefetchAbort = Dynarmic::HaltReason::UserDefined6;
+constexpr Dynarmic::HaltReason PrefetchAbort = Dynarmic::HaltReason::UserDefined6;
 
-[[nodiscard]] inline constexpr HaltReason TranslateHaltReason(Dynarmic::HaltReason hr) {
+constexpr HaltReason TranslateHaltReason(Dynarmic::HaltReason hr) {
     static_assert(u64(HaltReason::StepThread) == u64(StepThread));
     static_assert(u64(HaltReason::DataAbort) == u64(DataAbort));
     static_assert(u64(HaltReason::BreakLoop) == u64(BreakLoop));

src/core/core.cpp

@@ -295,10 +295,6 @@ struct System::Impl {
     SystemResultStatus Load(System& system, Frontend::EmuWindow& emu_window, const std::string& filepath, Service::AM::FrontendAppletParameters& params) {
         InitializeKernel(system);
 
-        if (params.applet_type == Service::AM::AppletType::Application) {
-            current_application_filepath = filepath;
-        }
-
         const auto file = GetGameFileFromPath(virtual_filesystem, filepath);
 
         // Create the application process
@@ -334,7 +330,7 @@ struct System::Impl {
         LaunchTimestampCache::SaveLaunchTimestamp(params.program_id);
 
         // Make the process created be the application
-        kernel.SetApplicationProcess(process->GetHandle());
+        kernel.MakeApplicationProcess(process->GetHandle());
 
         // Set up the rest of the system.
         SystemResultStatus init_result{SetupForApplicationProcess(system, emu_window)};
@@ -471,7 +467,6 @@ struct System::Impl {
     Core::SpeedLimiter speed_limiter;
     ExecuteProgramCallback execute_program_callback;
     ExitCallback exit_callback;
-    ApplicationChangedCallback application_changed_callback;
 
     std::optional<Service::Services> services;
     std::optional<Core::Debugger> debugger;
@@ -493,8 +488,6 @@ struct System::Impl {
     std::array<u64, Core::Hardware::NUM_CPU_CORES> dynarmic_ticks{};
     std::array<u8, 0x20> build_id{};
 
-    std::string current_application_filepath;
-
     /// Service manager
     std::shared_ptr<Service::SM::ServiceManager> service_manager;
     /// ContentProviderUnion instance
@@ -734,25 +727,7 @@ const Core::SpeedLimiter& System::SpeedLimiter() const {
 }
 
 u64 System::GetApplicationProcessProgramID() const {
-    const auto* const process = impl->kernel.ApplicationProcess();
+    return impl->kernel.ApplicationProcess()->GetProgramId();
-    return process != nullptr ? process->GetProgramId() : 0;
-}
-
-u64 System::GetProgramIdForProcessId(u64 process_id) const {
-    auto process = impl->kernel.GetProcessByProcessId(process_id);
-    return process.IsNull() ? 0 : process->GetProgramId();
-}
-
-u64 System::ResolveCallerProgramId(u64 process_id) const {
-    if (const auto program_id = this->GetProgramIdForProcessId(process_id); program_id != 0) {
-        return program_id;
-    }
-
-    const auto fallback = this->GetApplicationProcessProgramID();
-    LOG_WARNING(Core,
-                "Could not resolve caller process_id={}, falling back to application {:016X}",
-                process_id, fallback);
-    return fallback;
 }
 
 Loader::ResultStatus System::GetGameName(std::string& out) const {
@@ -935,10 +910,6 @@ void System::ExecuteProgram(std::size_t program_index) {
     }
 }
 
-const std::string& System::GetCurrentApplicationFilePath() const {
-    return impl->current_application_filepath;
-}
-
 /// @brief Gets a reference to the user channel stack.
 /// It is used to transfer data between programs.
 std::vector<std::vector<u8>>& System::GetUserChannel() {
@@ -990,18 +961,6 @@ void System::Exit() {
     }
 }
 
-void System::RegisterApplicationChangedCallback(ApplicationChangedCallback&& callback) {
-    impl->application_changed_callback = std::move(callback);
-}
-
-void System::NotifyApplicationChanged(u64 program_id) {
-    //LOG_DEBUG(Core, "Running application changed to {:016X}", program_id);
-
-    if (impl->application_changed_callback) {
-        impl->application_changed_callback(program_id);
-    }
-}
-
 void System::ApplySettings() {
     impl->RefreshTime(*this);
 

src/core/core.h

@@ -322,10 +322,6 @@ public:
 
     [[nodiscard]] u64 GetApplicationProcessProgramID() const;
 
-    [[nodiscard]] u64 GetProgramIdForProcessId(u64 process_id) const;
-
-    [[nodiscard]] u64 ResolveCallerProgramId(u64 process_id) const;
-
     /// Gets the name of the current game
     [[nodiscard]] Loader::ResultStatus GetGameName(std::string& out) const;
 
@@ -426,7 +422,6 @@ public:
     void PushGeneralChannelData(std::vector<u8>&& data);
     bool TryPopGeneralChannel(std::vector<u8>& out_data);
     [[nodiscard]] Service::Event& GetGeneralChannelEvent();
-    [[nodiscard]] const std::string& GetCurrentApplicationFilePath() const;
 
     /// Type used for the frontend to designate a callback for System to exit the application.
     using ExitCallback = std::function<void()>;
@@ -440,10 +435,6 @@ public:
     /// Instructs the frontend to exit the application.
     void Exit();
 
-    using ApplicationChangedCallback = std::function<void(u64 program_id)>;
-    void RegisterApplicationChangedCallback(ApplicationChangedCallback&& callback);
-    void NotifyApplicationChanged(u64 program_id);
-
     /// Applies any changes to settings to this core instance.
     void ApplySettings();
 

src/core/core_timing.cpp

@@ -38,7 +38,6 @@ constexpr u32 CpuClockTargetMhz(Settings::CpuClock clock) {
     }
 }
 
-#undef CreateEvent
 std::shared_ptr<EventType> CreateEvent(std::string name, TimedCallback&& callback) {
     return std::make_shared<EventType>(std::move(callback), std::move(name));
 }

src/core/file_sys/content_archive.cpp

@@ -29,7 +29,7 @@ static u8 MasterKeyIdForKeyGeneration(u8 key_generation) {
     return std::max<u8>(key_generation, 1) - 1;
 }
 
-NCA::NCA(VirtualFile file_, const NCA* base_nca, bool allow_missing_base)
+NCA::NCA(VirtualFile file_, const NCA* base_nca)
     : file(std::move(file_)), keys{Core::Crypto::KeyManager::Instance()} {
     if (file == nullptr) {
         status = Loader::ResultStatus::ErrorNullFile;
@@ -110,7 +110,7 @@ NCA::NCA(VirtualFile file_, const NCA* base_nca, bool allow_missing_base)
         }
     }
 
-    if (is_update && base_nca == nullptr && !allow_missing_base) {
+    if (is_update && base_nca == nullptr) {
         status = Loader::ResultStatus::ErrorMissingBKTRBaseRomFS;
     } else {
         status = Loader::ResultStatus::Success;

src/core/file_sys/content_archive.h

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -66,7 +63,7 @@ inline bool IsDirectoryLogoPartition(const VirtualDir& pfs) {
 // After construction, use GetStatus to determine if the file is valid and ready to be used.
 class NCA : public ReadOnlyVfsDirectory {
 public:
-    explicit NCA(VirtualFile file, const NCA* base_nca = nullptr, bool allow_missing_base = false);
+    explicit NCA(VirtualFile file, const NCA* base_nca = nullptr);
     ~NCA() override;
 
     Loader::ResultStatus GetStatus() const;

src/core/file_sys/fs_save_data_types.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -185,13 +185,13 @@ static_assert(sizeof(SaveDataFilter) == 0x48, "SaveDataFilter has invalid size."
 static_assert(std::is_trivially_copyable_v<SaveDataFilter>,
               "Data type must be trivially copyable.");
 
-struct SaveDataHashSalt {
+struct HashSalt {
     static constexpr size_t Size = 32;
 
     std::array<u8, Size> value;
 };
-static_assert(std::is_trivially_copyable_v<SaveDataHashSalt>, "Data type must be trivially copyable.");
+static_assert(std::is_trivially_copyable_v<HashSalt>, "Data type must be trivially copyable.");
-static_assert(sizeof(SaveDataHashSalt) == SaveDataHashSalt::Size);
+static_assert(sizeof(HashSalt) == HashSalt::Size);
 
 struct SaveDataCreationInfo2 {
 
@@ -210,7 +210,7 @@ struct SaveDataCreationInfo2 {
     u8 reserved1;
     bool is_hash_salt_enabled;
     u8 reserved2;
-    SaveDataHashSalt hash_salt;
+    HashSalt hash_salt;
     SaveDataMetaType meta_type;
     u8 reserved3;
     s32 meta_size;

src/core/file_sys/fsmitm_romfsbuild.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -14,7 +11,7 @@
 #include "core/file_sys/vfs/vfs.h"
 #include "core/file_sys/vfs/vfs_vector.h"
 
-namespace FileSys::RomFSBuilder {
+namespace FileSys {
 
 constexpr u64 FS_MAX_PATH = 0x301;
 

src/core/file_sys/fsmitm_romfsbuild.h

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -12,7 +9,7 @@
 #include "common/common_types.h"
 #include "core/file_sys/vfs/vfs.h"
 
-namespace FileSys::RomFSBuilder {
+namespace FileSys {
 
 struct RomFSBuildDirectoryContext;
 struct RomFSBuildFileContext;

src/core/file_sys/fssystem/fssystem_indirect_storage.cpp

@@ -4,7 +4,6 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "common/logging.h"
 #include "core/file_sys/errors.h"
 #include "core/file_sys/fssystem/fssystem_indirect_storage.h"
 
@@ -100,18 +99,6 @@ Result IndirectStorage::GetEntryList(Entry* out_entries, s32* out_entry_count, s
     R_SUCCEED();
 }
 
-void IndirectStorage::ReportMissingOriginal(s64 offset, s64 size) {
-    if (m_reported_missing_original) {
-        return;
-    }
-    m_reported_missing_original = true;
-
-    LOG_ERROR(Common_Filesystem,
-              "Patch storage requests {:#x} bytes at {:#x} from a base storage that is not "
-              "present; this data will read as garbage",
-              size, offset);
-}
-
 size_t IndirectStorage::Read(u8* buffer, size_t size, size_t offset) const {
     // Validate pre-conditions.
     ASSERT(this->IsInitialized());

src/core/file_sys/fssystem/fssystem_indirect_storage.h

@@ -85,9 +85,6 @@ public:
     void SetStorage(s32 idx, VirtualFile storage) {
         ASSERT(0 <= idx && idx < StorageCount);
         m_data_storage[idx] = storage;
-        if (idx == 0) {
-            m_original_missing = storage == nullptr || storage->GetSize() == 0;
-        }
     }
 
     template <typename T>
@@ -133,9 +130,6 @@ protected:
 
     template <bool ContinuousCheck, bool RangeCheck, typename F>
     Result OperatePerEntry(s64 offset, s64 size, F func);
-    // Launching another game makes the original storage inaccessable.
-    // This is a helper for multi-nca games.
-    void ReportMissingOriginal(s64 offset, s64 size);
 
 private:
     struct ContinuousReadingEntry {
@@ -160,8 +154,6 @@ private:
 private:
     mutable BucketTree m_table;
     std::array<VirtualFile, StorageCount> m_data_storage;
-    bool m_original_missing{false};
-    bool m_reported_missing_original{false};
 };
 
 template <bool ContinuousCheck, bool RangeCheck, typename F>
@@ -280,10 +272,6 @@ Result IndirectStorage::OperatePerEntry(s64 offset, s64 size, F func) {
         if (needs_operate) {
             const auto cur_entry_phys_offset = cur_entry.GetPhysicalOffset();
 
-            if (cur_entry.storage_index == 0 && m_original_missing) {
-                this->ReportMissingOriginal(cur_offset, cur_size);
-            }
-
             if constexpr (RangeCheck) {
                 // Get the current data storage's size.
                 s64 cur_data_storage_size = m_data_storage[cur_entry.storage_index]->GetSize();

src/core/file_sys/nca_metadata.h

@@ -48,11 +48,11 @@ struct ContentRecord {
     std::array<u8, 0x10> nca_id;
     std::array<u8, 0x6> size;
     ContentRecordType type;
-    u8 id_offset;
+    INSERT_PADDING_BYTES(1);
 };
 static_assert(sizeof(ContentRecord) == 0x38, "ContentRecord has incorrect size.");
 
-constexpr ContentRecord EMPTY_META_CONTENT_RECORD{{}, {}, {}, ContentRecordType::Meta, 0};
+constexpr ContentRecord EMPTY_META_CONTENT_RECORD{{}, {}, {}, ContentRecordType::Meta, {}};
 
 struct MetaRecord {
     u64_le title_id;

src/core/file_sys/registered_cache.cpp

@@ -567,45 +567,20 @@ VirtualFile RegisteredCache::GetFileAtID(NcaID id) const {
 }
 
 static std::optional<NcaID> CheckMapForContentRecord(const ankerl::unordered_dense::map<u64, CNMT>& map, u64 title_id, ContentRecordType type) {
-    auto cmnt_iter = map.find(title_id);
+    const auto cmnt_iter = map.find(title_id);
-    u8 id_offset = 0;
-
     if (cmnt_iter == map.cend()) {
-        const auto program_index = title_id & AOC_TITLE_ID_MASK;
+        return std::nullopt;
-        if (program_index == 0) {
-            return std::nullopt;
-        }
-
-        cmnt_iter = map.find(title_id & ~AOC_TITLE_ID_MASK);
-        if (cmnt_iter == map.cend()) {
-            return std::nullopt;
-        }
-
-        id_offset = static_cast<u8>(program_index);
     }
 
     const auto& cnmt = cmnt_iter->second;
     const auto& content_records = cnmt.GetContentRecords();
     const auto iter = std::find_if(content_records.cbegin(), content_records.cend(),
-                                   [type, id_offset](const ContentRecord& rec) {
+                                   [type](const ContentRecord& rec) { return rec.type == type; });
-                                       return rec.type == type && rec.id_offset == id_offset;
+    if (iter == content_records.cend()) {
-                                   });
-    if (iter != content_records.cend()) {
-        return std::make_optional(iter->nca_id);
-    }
-
-    if (id_offset != 0) {
         return std::nullopt;
     }
 
-    const auto fallback_iter =
+    return std::make_optional(iter->nca_id);
-        std::find_if(content_records.cbegin(), content_records.cend(),
-                     [type](const ContentRecord& rec) { return rec.type == type; });
-    if (fallback_iter == content_records.cend()) {
-        return std::nullopt;
-    }
-
-    return std::make_optional(fallback_iter->nca_id);
 }
 
 std::optional<NcaID> RegisteredCache::GetNcaIDFromMetadata(u64 title_id,

src/core/file_sys/romfs.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -38,7 +38,7 @@ struct RomFSHeader {
 };
 static_assert(sizeof(RomFSHeader) == 0x50, "RomFSHeader has incorrect size.");
 
-struct RomFSDirectoryEntry {
+struct DirectoryEntry {
     u32_le parent;
     u32_le sibling;
     u32_le child_dir;
@@ -46,9 +46,9 @@ struct RomFSDirectoryEntry {
     u32_le hash;
     u32_le name_length;
 };
-static_assert(sizeof(RomFSDirectoryEntry) == 0x18, "RomFSDirectoryEntry has incorrect size.");
+static_assert(sizeof(DirectoryEntry) == 0x18, "DirectoryEntry has incorrect size.");
 
-struct RomFSFileEntry {
+struct FileEntry {
     u32_le parent;
     u32_le sibling;
     u64_le offset;
@@ -56,7 +56,7 @@ struct RomFSFileEntry {
     u32_le hash;
     u32_le name_length;
 };
-static_assert(sizeof(RomFSFileEntry) == 0x20, "RomFSFileEntry has incorrect size.");
+static_assert(sizeof(FileEntry) == 0x20, "FileEntry has incorrect size.");
 
 struct RomFSTraversalContext {
     RomFSHeader header;
@@ -84,14 +84,14 @@ std::pair<EntryType, std::string> GetEntry(const RomFSTraversalContext& ctx, siz
     return {entry, std::move(name)};
 }
 
-std::pair<RomFSDirectoryEntry, std::string> GetDirectoryEntry(const RomFSTraversalContext& ctx,
+std::pair<DirectoryEntry, std::string> GetDirectoryEntry(const RomFSTraversalContext& ctx,
                                                          size_t directory_offset) {
-    return GetEntry<RomFSDirectoryEntry, &RomFSTraversalContext::directory_meta>(ctx, directory_offset);
+    return GetEntry<DirectoryEntry, &RomFSTraversalContext::directory_meta>(ctx, directory_offset);
 }
 
-std::pair<RomFSFileEntry, std::string> GetFileEntry(const RomFSTraversalContext& ctx,
+std::pair<FileEntry, std::string> GetFileEntry(const RomFSTraversalContext& ctx,
                                                size_t file_offset) {
-    return GetEntry<RomFSFileEntry, &RomFSTraversalContext::file_meta>(ctx, file_offset);
+    return GetEntry<FileEntry, &RomFSTraversalContext::file_meta>(ctx, file_offset);
 }
 
 void ProcessFile(const RomFSTraversalContext& ctx, u32 this_file_offset,
@@ -163,7 +163,7 @@ VirtualFile CreateRomFS(VirtualDir dir, VirtualDir ext) {
     if (dir == nullptr)
         return nullptr;
 
-    RomFSBuilder::RomFSBuildContext ctx{dir, ext};
+    RomFSBuildContext ctx{dir, ext};
     return ConcatenatedVfsFile::MakeConcatenatedFile(0, dir->GetName(), ctx.Build());
 }
 

src/core/file_sys/submission_package.cpp

@@ -12,7 +12,6 @@
 #include "common/hex_util.h"
 #include "common/logging.h"
 #include "core/crypto/key_manager.h"
-#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/nca_metadata.h"
 #include "core/file_sys/partition_filesystem.h"
@@ -66,12 +65,10 @@ u64 NSP::GetProgramTitleID() const {
     }
 
     auto program_id = expected_program_id;
-    if (program_id == 0 && !program_status.empty()) {
+    if (program_id == 0) {
-        program_id = std::min_element(program_status.cbegin(), program_status.cend(),
+        if (!program_status.empty()) {
-                                      [](const auto& lhs, const auto& rhs) {
+            program_id = program_status.begin()->first;
-                                          return lhs.first < rhs.first;
+        }
-                                      })
-                         ->first;
     }
 
     program_id = program_id + program_index;
@@ -276,7 +273,8 @@ void NSP::ReadNCAs(const std::vector<VirtualFile>& files) {
                     // If the last 3 hexadecimal digits of the NCA's TitleID is between 0x1 and
                     // 0x7FF, this is a multi-program update NCA. Otherwise, this is a regular
                     // update NCA.
-                    if ((next_nca->GetTitleId() & AOC_TITLE_ID_MASK) != 0) {
+                    if ((next_nca->GetTitleId() & 0x7FF) != 0 &&
+                        (next_nca->GetTitleId() & 0x800) == 0) {
                         ncas[next_nca->GetTitleId()][{cnmt.GetType(), rec.type}] =
                             std::move(next_nca);
                     } else {

src/core/file_sys/vfs/vfs.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -10,12 +10,6 @@
 #include "common/fs/path_util.h"
 #include "core/file_sys/vfs/vfs.h"
 
-#undef CreateFile
-#undef DeleteFile
-#undef CreateDirectory
-#undef CopyFile
-#undef MoveFile
-
 namespace FileSys {
 
 VfsFilesystem::VfsFilesystem(VirtualDir root_) : root(std::move(root_)) {}

src/core/file_sys/vfs/vfs_vector.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
@@ -99,10 +99,6 @@ private:
     std::string name;
 };
 
-#undef CreateFile
-#undef DeleteFile
-#undef CreateDirectory
-
 // An implementation of VfsDirectory that maintains two vectors for subdirectories and files.
 // Vector data is supplied upon construction.
 class VectorVfsDirectory : public VfsDirectory {

src/core/hle/kernel/kernel.cpp

@@ -349,18 +349,9 @@ struct KernelCore::Impl {
         object_name_global_data.emplace(kernel);
     }
 
-    void SetApplicationProcess(KernelCore& kernel, KProcess* process) {
+    void MakeApplicationProcess(KernelCore& kernel, KProcess* process) {
-        if (application_process == process)
-            return;
-
-        KProcess* const previous = application_process;
         application_process = process;
-
+        application_process->Open(kernel);
-        if (application_process != nullptr)
-            application_process->Open(kernel);
-
-        if (previous != nullptr)
-            previous->Close(kernel);
     }
 
     /// Sets the host thread ID for the caller.
@@ -888,8 +879,8 @@ void KernelCore::RemoveProcess(KProcess* process) {
     }
 }
 
-void KernelCore::SetApplicationProcess(KProcess* process) {
+void KernelCore::MakeApplicationProcess(KProcess* process) {
-    impl->SetApplicationProcess(*this, process);
+    impl->MakeApplicationProcess(*this, process);
 }
 
 KProcess* KernelCore::ApplicationProcess() {
@@ -900,14 +891,6 @@ const KProcess* KernelCore::ApplicationProcess() const {
     return impl->application_process;
 }
 
-KScopedAutoObject<KProcess> KernelCore::GetProcessByProcessId(u64 process_id) {
-    std::scoped_lock lk{impl->process_list_lock};
-    for (auto* const process : impl->process_list)
-        if (process != nullptr && process->GetProcessId() == process_id)
-            return {*this, process};
-    return {*this, nullptr};
-}
-
 std::list<KScopedAutoObject<KProcess>> KernelCore::GetProcessList() {
     std::list<KScopedAutoObject<KProcess>> processes;
     std::scoped_lock lk{impl->process_list_lock};

src/core/hle/kernel/kernel.h

@@ -124,8 +124,8 @@ public:
     void AppendNewProcess(KProcess* process);
     void RemoveProcess(KProcess* process);
 
-    /// Makes the given process the current application process.
+    /// Makes the given process the new application process.
-    void SetApplicationProcess(KProcess* process);
+    void MakeApplicationProcess(KProcess* process);
 
     /// Retrieves a pointer to the application process.
     KProcess* ApplicationProcess();
@@ -133,9 +133,6 @@ public:
     /// Retrieves a const pointer to the application process.
     const KProcess* ApplicationProcess() const;
 
-    /// Retrieves the process with the given process ID, or a null object.
-    KScopedAutoObject<KProcess> GetProcessByProcessId(u64 process_id);
-
     /// Retrieves the list of processes.
     std::list<KScopedAutoObject<KProcess>> GetProcessList();
 

src/core/hle/kernel/svc.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-late
@@ -13,10 +13,6 @@
 #include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/svc.h"
 
-#undef OutputDebugString
-#undef GetObject
-#undef CreateProcess
-
 namespace Kernel::Svc {
 
 static uint32_t GetArg32(std::span<uint64_t, 8> args, int n) {

src/core/hle/kernel/svc/svc_memory.cpp

@@ -11,11 +11,7 @@
 namespace Kernel::Svc {
 namespace {
 
-[[nodiscard]] inline constexpr bool IsValidSetAddressRange(u64 address, u64 size) {
+constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
-    return address + size > address;
-}
-
-[[nodiscard]] inline constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
     switch (perm) {
     case MemoryPermission::None:
     case MemoryPermission::Read:
@@ -26,6 +22,13 @@ namespace {
     }
 }
 
+// Checks if address + size is greater than the given address
+// This can return false if the size causes an overflow of a 64-bit type
+// or if the given size is zero.
+constexpr bool IsValidAddressRange(u64 address, u64 size) {
+    return address + size > address;
+}
+
 // Helper function that performs the common sanity checks for svcMapMemory
 // and svcUnmapMemory. This is doable, as both functions perform their sanitizing
 // in the same order.
@@ -50,17 +53,14 @@ Result MapUnmapMemorySanityChecks(const KProcessPageTable& manager, u64 dst_addr
         R_THROW(ResultInvalidSize);
     }
 
-    // Checks if address + size is greater than the given address
+    if (!IsValidAddressRange(dst_addr, size)) {
-    // This can return false if the size causes an overflow of a 64-bit type
-    // or if the given size is zero.
-    if (!IsValidSetAddressRange(dst_addr, size)) {
         LOG_ERROR(Kernel_SVC,
                   "Destination is not a valid address range, addr={:#016x}, size={:#016x}",
                   dst_addr, size);
         R_THROW(ResultInvalidCurrentMemory);
     }
 
-    if (!IsValidSetAddressRange(src_addr, size)) {
+    if (!IsValidAddressRange(src_addr, size)) {
         LOG_ERROR(Kernel_SVC, "Source is not a valid address range, addr={:#016x}, size={:#016x}",
                   src_addr, size);
         R_THROW(ResultInvalidCurrentMemory);

src/core/hle/kernel/svc/svc_process_memory.cpp

@@ -11,11 +11,11 @@
 namespace Kernel::Svc {
 namespace {
 
-[[nodiscard]] inline constexpr bool IsValidAddressRange(u64 address, u64 size) {
+constexpr bool IsValidAddressRange(u64 address, u64 size) {
     return address + size > address;
 }
 
-[[nodiscard]] inline constexpr bool IsValidProcessMemoryPermission(Svc::MemoryPermission perm) {
+constexpr bool IsValidProcessMemoryPermission(Svc::MemoryPermission perm) {
     switch (perm) {
     case Svc::MemoryPermission::None:
     case Svc::MemoryPermission::Read:

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

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -13,7 +10,6 @@ namespace Service::AM {
 constexpr Result ResultNoDataInChannel{ErrorModule::AM, 2};
 constexpr Result ResultNoMessages{ErrorModule::AM, 3};
 constexpr Result ResultLibraryAppletTerminated{ErrorModule::AM, 22};
-constexpr Result ResultApplicationRecordNotFound{ErrorModule::AM, 37};
 constexpr Result ResultInvalidOffset{ErrorModule::AM, 503};
 constexpr Result ResultInvalidStorageType{ErrorModule::AM, 511};
 constexpr Result ResultFatalSectionCountImbalance{ErrorModule::AM, 512};

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

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -201,14 +201,6 @@ enum class ProgramSpecifyKind : u32 {
     RestartProgram = 2,
 };
 
-// Maufeat: Use enums for zindex instead of using random zindex numbers
-enum AppletZIndex : s32 {
-    Background = 0,
-    Foreground = 1,
-    ForegroundVisible = 2,
-    Overlay = 3,
-};
-
 struct CommonArguments {
     CommonArgumentVersion arguments_version;
     CommonArgumentSize size;

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

@@ -56,22 +56,22 @@ void Applet::UpdateSuspensionStateLocked(bool force_message) {
     }
 }
 
-void Applet::SetInteractibleLocked(bool pad_interactible, bool touch_interactible) {
+void Applet::SetInteractibleLocked(bool interactible) {
-    if (is_pad_interactible == pad_interactible && is_touch_interactible == touch_interactible) {
+    if (is_interactible == interactible) {
         return;
     }
 
-    is_pad_interactible = pad_interactible;
+    is_interactible = interactible;
-    is_touch_interactible = touch_interactible;
 
     const bool exit_requested = lifecycle_manager.GetExitRequested();
-    const bool pad_enabled = pad_interactible && !exit_requested;
+    const bool input_enabled = interactible && !exit_requested;
-    const bool touch_enabled = touch_interactible && !exit_requested;
 
-    LOG_DEBUG(Service_AM, "applet={} pad={} touch={} exit_requested={}",
+    if (applet_id == AppletId::OverlayDisplay || applet_id == AppletId::Application) {
-              static_cast<u32>(applet_id), pad_enabled, touch_enabled, exit_requested);
+        LOG_DEBUG(Service_AM, "called, applet={} interactible={} exit_requested={} input_enabled={} overlay_in_foreground={}",
+                 static_cast<u32>(applet_id), interactible, exit_requested, input_enabled, overlay_in_foreground);
+    }
 
-    hid_registration.EnableAppletToGetInput(pad_enabled, touch_enabled);
+    hid_registration.EnableAppletToGetInput(input_enabled);
 }
 
 void Applet::OnProcessTerminatedLocked() {

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

@@ -125,11 +125,9 @@ struct Applet {
     bool album_image_taken_notification_enabled{};
     bool record_volume_muted{};
     bool is_activity_runnable{};
-    bool is_pad_interactible{true};
+    bool is_interactible{true};
-    bool is_touch_interactible{true};
     bool window_visible{true};
-    bool overlay_watching_short_home_button{false};
+    bool overlay_in_foreground{false};
-    bool overlay_handling_touch_input{false};
 
     // Events
     Event overlay_event;
@@ -150,7 +148,7 @@ struct Applet {
 
     // Process state management
     void UpdateSuspensionStateLocked(bool force_message);
-    void SetInteractibleLocked(bool pad_interactible, bool touch_interactible);
+    void SetInteractibleLocked(bool interactible);
     void OnProcessTerminatedLocked();
 };
 

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

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -6,7 +6,6 @@
 
 #include "core/core.h"
 #include "core/hle/service/am/display_layer_manager.h"
-#include "core/hle/service/nvnflinger/hwc_layer.h"
 #include "core/hle/service/sm/sm.h"
 #include "core/hle/service/vi/application_display_service.h"
 #include "core/hle/service/vi/container.h"
@@ -34,7 +33,6 @@ void DisplayLayerManager::Initialize(Core::System& system, Kernel::KProcess* pro
     m_system_shared_buffer_id = 0;
     m_system_shared_layer_id = 0;
     m_applet_id = applet_id;
-    m_library_applet_mode = mode;
     m_buffer_sharing_enabled = false;
     m_blending_enabled = mode == LibraryAppletMode::PartialForeground ||
                          mode == LibraryAppletMode::PartialForegroundIndirectDisplay;
@@ -74,16 +72,14 @@ Result DisplayLayerManager::CreateManagedDisplayLayer(u64* out_layer_id) {
         out_layer_id, 0, display_id, Service::AppletResourceUserId{m_process->GetProcessId()}));
 
     m_manager_display_service->SetLayerVisibility(m_visible, *out_layer_id);
-    (void)m_display_service->GetContainer()->SetLayerStackMask(*out_layer_id,
-                                                              this->GetLayerStackMask());
 
     if (m_applet_id != AppletId::Application) {
         (void)m_manager_display_service->SetLayerBlending(m_blending_enabled, *out_layer_id);
         if (m_applet_id == AppletId::OverlayDisplay) {
-            (void)m_manager_display_service->SetLayerZIndex(Overlay, *out_layer_id);
+            (void)m_manager_display_service->SetLayerZIndex(-1, *out_layer_id);
             (void)m_display_service->GetContainer()->SetLayerIsOverlay(*out_layer_id, true);
         } else {
-            (void)m_manager_display_service->SetLayerZIndex(Foreground, *out_layer_id);
+            (void)m_manager_display_service->SetLayerZIndex(1, *out_layer_id);
         }
     }
 
@@ -126,12 +122,10 @@ Result DisplayLayerManager::IsSystemBufferSharingEnabled() {
 
     // Ensure the overlay layer is visible
     m_manager_display_service->SetLayerVisibility(m_visible, m_system_shared_layer_id);
-    (void)m_display_service->GetContainer()->SetLayerStackMask(m_system_shared_layer_id,
-                                                              this->GetLayerStackMask());
     m_manager_display_service->SetLayerBlending(m_blending_enabled, m_system_shared_layer_id);
-    s32 initial_z = Foreground;
+    s32 initial_z = 1;
     if (m_applet_id == AppletId::OverlayDisplay) {
-        initial_z = Overlay;
+        initial_z = -1;
         (void)m_display_service->GetContainer()->SetLayerIsOverlay(m_system_shared_layer_id, true);
     }
     m_manager_display_service->SetLayerZIndex(initial_z, m_system_shared_layer_id);
@@ -148,36 +142,6 @@ Result DisplayLayerManager::GetSystemSharedLayerHandle(u64* out_system_shared_bu
     R_SUCCEED();
 }
 
-u32 DisplayLayerManager::GetLayerStackMask() const {
-    using Nvnflinger::LayerStackBit;
-    using Nvnflinger::LayerStackId;
-
-    constexpr u32 Displayed = LayerStackBit(LayerStackId::Default);
-    constexpr u32 Screenshot = LayerStackBit(LayerStackId::Screenshot);
-    constexpr u32 Recording = LayerStackBit(LayerStackId::Recording);
-    constexpr u32 LastFrame = LayerStackBit(LayerStackId::LastFrame);
-    constexpr u32 Debug = LayerStackBit(LayerStackId::ApplicationForDebug);
-
-    switch (m_applet_id) {
-        case AppletId::Application:
-            return Displayed | Screenshot | Recording | LastFrame | Debug;
-        case AppletId::OverlayDisplay:
-            return Displayed;
-        case AppletId::QLaunch:
-            return Displayed;
-        default:
-            break;
-    }
-
-    switch (m_library_applet_mode) {
-    case LibraryAppletMode::AllForeground:
-    case LibraryAppletMode::AllForegroundInitiallyHidden:
-        return Displayed | Screenshot | LastFrame;
-    default:
-        return Displayed | Screenshot;
-    }
-}
-
 void DisplayLayerManager::SetWindowVisibility(bool visible) {
     if (m_visible == visible) {
         return;
@@ -221,17 +185,10 @@ void DisplayLayerManager::SetOverlayZIndex(s32 z_index) {
 }
 
 Result DisplayLayerManager::WriteAppletCaptureBuffer(bool* out_was_written,
-                                                     s32* out_fbshare_layer_index,
+                                                     s32* out_fbshare_layer_index) {
-                                                     VI::CaptureKind kind) {
     R_UNLESS(m_buffer_sharing_enabled, VI::ResultPermissionDenied);
     R_RETURN(m_display_service->GetContainer()->GetSharedBufferManager()->WriteAppletCaptureBuffer(
-        out_was_written, out_fbshare_layer_index, kind));
+        out_was_written, out_fbshare_layer_index));
-}
-
-Result DisplayLayerManager::ClearAppletCaptureBuffer(s32 fbshare_layer_index, u32 color) {
-    R_UNLESS(m_buffer_sharing_enabled, VI::ResultPermissionDenied);
-    R_RETURN(m_display_service->GetContainer()->GetSharedBufferManager()->ClearAppletCaptureBuffer(
-        fbshare_layer_index, color));
 }
 
 } // namespace Service::AM

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

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -23,7 +23,6 @@ class KProcess;
 namespace Service::VI {
 class IApplicationDisplayService;
 class IManagerDisplayService;
-enum class CaptureKind : u32;
 } // namespace Service::VI
 
 namespace Service::AM {
@@ -49,13 +48,9 @@ public:
 
     void SetOverlayZIndex(s32 z_index);
 
-    Result WriteAppletCaptureBuffer(bool* out_was_written, s32* out_fbshare_layer_index,
+    Result WriteAppletCaptureBuffer(bool* out_was_written, s32* out_fbshare_layer_index);
-                                    VI::CaptureKind kind);
-    Result ClearAppletCaptureBuffer(s32 fbshare_layer_index, u32 color);
 
 private:
-    u32 GetLayerStackMask() const;
-
     Kernel::KProcess* m_process{};
     std::shared_ptr<VI::IApplicationDisplayService> m_display_service{};
     std::shared_ptr<VI::IManagerDisplayService> m_manager_display_service{};
@@ -64,7 +59,6 @@ private:
     u64 m_system_shared_buffer_id{};
     u64 m_system_shared_layer_id{};
     AppletId m_applet_id{};
-    LibraryAppletMode m_library_applet_mode{};
     bool m_buffer_sharing_enabled{};
     bool m_blending_enabled{};
     bool m_visible{true};

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

@@ -36,17 +36,12 @@ HidRegistration::~HidRegistration() {
     }
 }
 
-void HidRegistration::EnableAppletToGetInput(bool enable_pad, bool enable_touch) {
+void HidRegistration::EnableAppletToGetInput(bool enable) {
-    if (!m_process.IsInitialized())
+    if (m_process.IsInitialized()) {
-        return;
+        m_hid_server->GetResourceManager()->SetAruidValidForVibration(m_process.GetProcessId(),
-
+                                                                      enable);
-    const auto resource_manager = m_hid_server->GetResourceManager();
+        m_hid_server->GetResourceManager()->EnableInput(m_process.GetProcessId(), enable);
-    const u64 aruid = m_process.GetProcessId();
+    }
-
-    resource_manager->EnablePadInput(aruid, enable_pad);
-    resource_manager->EnableTouchScreen(aruid, enable_touch);
-
-    resource_manager->SetAruidValidForVibration(aruid, enable_pad);
 }
 
 } // namespace Service::AM

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

@@ -28,7 +28,7 @@ public:
     ~HidRegistration();
 
     void RegisterCurrentProcess();
-    void EnableAppletToGetInput(bool enable_pad, bool enable_touch);
+    void EnableAppletToGetInput(bool enable);
 
 private:
     Process& m_process;

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

@@ -4,8 +4,6 @@
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "core/core.h"
-#include "core/file_sys/common_funcs.h"
 #include "core/hle/service/am/applet.h"
 #include "core/hle/service/am/service/applet_common_functions.h"
 #include "core/hle/service/cmif_serialization.h"
@@ -80,7 +78,7 @@ Result IAppletCommonFunctions::SetCpuBoostRequestPriority(s32 priority) {
 
 Result IAppletCommonFunctions::GetCurrentApplicationId(Out<u64> out_application_id) {
     LOG_WARNING(Service_AM, "(STUBBED) called");
-    *out_application_id = FileSys::GetBaseTitleID(system.GetApplicationProcessProgramID());
+    *out_application_id = system.GetApplicationProcessProgramID() & ~0xFFFULL;
     R_SUCCEED();
 }
 

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

@@ -6,10 +6,8 @@
 
 #include <openssl/evp.h>
 
-#include "common/hex_util.h"
 #include "common/settings.h"
 #include "common/uuid.h"
-#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/file_sys/registered_cache.h"
@@ -30,27 +28,6 @@
 
 namespace Service::AM {
 
-namespace {
-
-FileSys::PatchManager::Metadata GetApplicationMetadata(Core::System& system, u64 program_id) {
-    auto metadata = FileSys::PatchManager::GetMetadataFromBaseOrUpdate(system, program_id);
-    if (metadata.first != nullptr) {
-        return metadata;
-    }
-
-    const auto application_id = FileSys::GetBaseTitleID(program_id);
-    if (application_id == program_id) {
-        return metadata;
-    }
-
-    LOG_DEBUG(Service_AM,
-              "no metadata for program_id={:016X}, falling back to application_id={:016X}",
-              program_id, application_id);
-    return FileSys::PatchManager::GetMetadataFromBaseOrUpdate(system, application_id);
-}
-
-} // Anonymous namespace
-
 IApplicationFunctions::IApplicationFunctions(Core::System& system_, std::shared_ptr<Applet> applet)
     : ServiceFramework{system_, "IApplicationFunctions"}, m_applet{std::move(applet)} {
     // clang-format off
@@ -179,7 +156,7 @@ Result IApplicationFunctions::GetDesiredLanguage(Out<u64> out_language_code) {
     // Default to 0 (all languages supported)
     u32 supported_languages = 0;
 
-    const auto res = GetApplicationMetadata(system, m_applet->program_id);
+    const auto res = FileSys::PatchManager::GetMetadataFromBaseOrUpdate(system, m_applet->program_id);
     if (res.first != nullptr) {
         supported_languages = res.first->GetSupportedLanguages();
     }
@@ -217,7 +194,7 @@ Result IApplicationFunctions::SetTerminateResult(Result terminate_result) {
 Result IApplicationFunctions::GetDisplayVersion(Out<DisplayVersion> out_display_version) {
     LOG_DEBUG(Service_AM, "called");
 
-    const auto res = GetApplicationMetadata(system, m_applet->program_id);
+    const auto res = FileSys::PatchManager::GetMetadataFromBaseOrUpdate(system, m_applet->program_id);
     if (res.first != nullptr) {
         const auto& version = res.first->GetVersionString();
         std::memcpy(out_display_version->string.data(), version.data(),
@@ -347,7 +324,6 @@ Result IApplicationFunctions::NotifyRunning(Out<bool> out_became_running) {
 
 Result IApplicationFunctions::GetPseudoDeviceId(Out<Common::UUID> out_pseudo_device_id) {
     LOG_WARNING(Service_AM, "(stubbed)");
-    R_UNLESS(out_pseudo_device_id, ResultUnknown);
 
     // This should be hashed with the device specific hash
     // for now this will do
@@ -454,21 +430,15 @@ Result IApplicationFunctions::ExecuteProgram(ProgramSpecifyKind kind, u64 value)
 
 // https://switchbrew.org/wiki/Applet_Manager_services#CreateApplicationAndRequestToStart
 Result IApplicationFunctions::CreateApplicationAndRequestToStart(u64 application_id) {
-    LOG_INFO(Service_AM, "called, application_id={:016X} current_program_id={:016X}", application_id, m_applet->program_id);
+    LOG_INFO(Service_AM, "called, application_id={:016X}", application_id);
 
-    if (application_id == 0 ||
+    // If application_id is 0, relaunch the current application
-        FileSys::GetBaseTitleID(application_id) == FileSys::GetBaseTitleID(m_applet->program_id)) {
+    const u64 target_application_id =
-        const auto program_index = application_id == 0
+        (application_id == 0) ? m_applet->program_id : application_id;
-                                       ? 0
-                                       : application_id - FileSys::GetBaseTitleID(application_id);
 
-        system.GetUserChannel() = m_applet->user_channel_launch_parameter;
+    system.GetUserChannel() = m_applet->user_channel_launch_parameter;
-        system.ExecuteProgram(program_index);
+    system.ExecuteProgram(target_application_id);
-        R_SUCCEED();
+    R_SUCCEED();
-    }
-
-    LOG_ERROR(Service_AM, "Launching a different application ({:016X}) is not implemented!", application_id);
-    R_THROW(ResultUnknown);
 }
 
 Result IApplicationFunctions::ClearUserChannel() {

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

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -8,7 +8,6 @@
 #include "core/hle/service/am/applet.h"
 #include "core/hle/service/am/service/display_controller.h"
 #include "core/hle/service/cmif_serialization.h"
-#include "core/hle/service/vi/shared_buffer_manager.h"
 
 namespace Service::AM {
 
@@ -72,16 +71,16 @@ Result IDisplayController::TakeScreenShotOfOwnLayer(bool unknown0, s32 fbshare_l
 }
 
 Result IDisplayController::ClearCaptureBuffer(bool unknown0, s32 fbshare_layer_index, u32 color) {
-    LOG_DEBUG(Service_AM, "called, unknown0={} fbshare_layer_index={} color={:#x}", unknown0,
+    LOG_WARNING(Service_AM, "(STUBBED) called, unknown0={} fbshare_layer_index={} color={:#x}",
-              fbshare_layer_index, color);
+                unknown0, fbshare_layer_index, color);
-    R_RETURN(applet->display_layer_manager.ClearAppletCaptureBuffer(fbshare_layer_index, color));
+    R_SUCCEED();
 }
 
 Result IDisplayController::AcquireLastForegroundCaptureSharedBuffer(
     Out<bool> out_was_written, Out<s32> out_fbshare_layer_index) {
-    LOG_DEBUG(Service_AM, "called");
+    LOG_WARNING(Service_AM, "(STUBBED) called");
-    R_RETURN(applet->display_layer_manager.WriteAppletCaptureBuffer(
+    R_RETURN(applet->display_layer_manager.WriteAppletCaptureBuffer(out_was_written,
-        out_was_written, out_fbshare_layer_index, VI::CaptureKind::LastForeground));
+                                                                    out_fbshare_layer_index));
 }
 
 Result IDisplayController::ReleaseLastForegroundCaptureSharedBuffer() {
@@ -91,9 +90,9 @@ Result IDisplayController::ReleaseLastForegroundCaptureSharedBuffer() {
 
 Result IDisplayController::AcquireCallerAppletCaptureSharedBuffer(
     Out<bool> out_was_written, Out<s32> out_fbshare_layer_index) {
-    LOG_DEBUG(Service_AM, "called");
+    LOG_WARNING(Service_AM, "(STUBBED) called");
-    R_RETURN(applet->display_layer_manager.WriteAppletCaptureBuffer(
+    R_RETURN(applet->display_layer_manager.WriteAppletCaptureBuffer(out_was_written,
-        out_was_written, out_fbshare_layer_index, VI::CaptureKind::CallerApplet));
+                                                                    out_fbshare_layer_index));
 }
 
 Result IDisplayController::ReleaseCallerAppletCaptureSharedBuffer() {
@@ -103,9 +102,9 @@ Result IDisplayController::ReleaseCallerAppletCaptureSharedBuffer() {
 
 Result IDisplayController::AcquireLastApplicationCaptureSharedBuffer(
     Out<bool> out_was_written, Out<s32> out_fbshare_layer_index) {
-    LOG_DEBUG(Service_AM, "called");
+    LOG_WARNING(Service_AM, "(STUBBED) called");
-    R_RETURN(applet->display_layer_manager.WriteAppletCaptureBuffer(
+    R_RETURN(applet->display_layer_manager.WriteAppletCaptureBuffer(out_was_written,
-        out_was_written, out_fbshare_layer_index, VI::CaptureKind::LastApplication));
+                                                                    out_fbshare_layer_index));
 }
 
 Result IDisplayController::ReleaseLastApplicationCaptureSharedBuffer() {

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

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "core/hle/service/am/applet.h"
@@ -22,7 +22,7 @@ namespace Service::AM {
         {10, nullptr, "StartShutdownSequenceForOverlay"},
         {11, nullptr, "StartRebootSequenceForOverlay"},
         {20, D<&IOverlayFunctions::SetHandlingHomeButtonShortPressedEnabled>, "SetHandlingHomeButtonShortPressedEnabled"},
-        {21, D<&IOverlayFunctions::SetHandlingTouchScreenInputEnabled>, "SetHandlingTouchScreenInputEnabled"},
+        {21, nullptr, "SetHandlingTouchScreenInputEnabled"},
         {30, nullptr, "SetHealthWarningShowingState"},
         {31, D<&IOverlayFunctions::IsHealthWarningRequired>, "IsHealthWarningRequired"},
         {40, nullptr, "GetApplicationNintendoLogo"},
@@ -43,12 +43,10 @@ namespace Service::AM {
     Result IOverlayFunctions::BeginToWatchShortHomeButtonMessage() {
         LOG_DEBUG(Service_AM, "called");
 
-        {
+        m_applet->overlay_in_foreground = true;
-            std::scoped_lock lk{m_applet->lock};
+        m_applet->home_button_short_pressed_blocked = false;
-            m_applet->overlay_watching_short_home_button = true;
-        }
 
-        if (auto* window_system = system.GetAppletManager().GetWindowSystem()) {
+        if (auto *window_system = system.GetAppletManager().GetWindowSystem()) {
             window_system->RequestUpdate();
         }
 
@@ -58,26 +56,16 @@ namespace Service::AM {
     Result IOverlayFunctions::EndToWatchShortHomeButtonMessage() {
         LOG_DEBUG(Service_AM, "called");
 
-        {
+        m_applet->overlay_in_foreground = false;
-            std::scoped_lock lk{m_applet->lock};
+        m_applet->home_button_short_pressed_blocked = false;
-            m_applet->overlay_watching_short_home_button = false;
-        }
 
-        if (auto* window_system = system.GetAppletManager().GetWindowSystem()) {
+        if (auto *window_system = system.GetAppletManager().GetWindowSystem()) {
             window_system->RequestUpdate();
         }
 
         R_SUCCEED();
     }
 
-    Result IOverlayFunctions::SetHandlingTouchScreenInputEnabled(bool enabled) {
-        LOG_DEBUG(Service_AM, "called, enabled={}", enabled);
-
-        std::scoped_lock lk{m_applet->lock};
-        m_applet->overlay_handling_touch_input = enabled;
-        R_SUCCEED();
-    }
-
     Result IOverlayFunctions::GetApplicationIdForLogo(Out<u64> out_application_id) {
         LOG_DEBUG(Service_AM, "called");
 

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

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #pragma once
@@ -20,7 +20,6 @@ namespace Service::AM {
         Result SetAutoSleepTimeAndDimmingTimeEnabled(bool enabled);
         Result IsHealthWarningRequired(Out<bool> is_required);
         Result SetHandlingHomeButtonShortPressedEnabled(bool enabled);
-        Result SetHandlingTouchScreenInputEnabled(bool enabled);
         Result Unknown70();
 
     private:

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

@@ -4,11 +4,7 @@
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include <utility>
-
-#include "common/settings.h"
 #include "core/core.h"
-#include "core/hle/kernel/kernel.h"
 #include "core/hle/service/am/am_results.h"
 #include "core/hle/service/am/applet.h"
 #include "core/hle/service/am/applet_manager.h"
@@ -36,82 +32,46 @@ void WindowSystem::RequestUpdate() {
 }
 
 void WindowSystem::Update() {
-    {
+    std::scoped_lock lk{m_lock};
-        std::scoped_lock lk{m_lock};
 
-        LOG_DEBUG(Service_AM, "called, home_menu={} application={} overlay={}",
+    LOG_DEBUG(Service_AM, "called, home_menu={} application={} overlay={}",
-                  m_home_menu != nullptr, m_application != nullptr, m_overlay_display != nullptr);
+              m_home_menu != nullptr, m_application != nullptr, m_overlay_display != nullptr);
 
-        // Loop through all applets and remove terminated applets.
+    // Loop through all applets and remove terminated applets.
-        this->PruneTerminatedAppletsLocked();
+    this->PruneTerminatedAppletsLocked();
 
-        // If the home menu is being locked into the foreground, handle that.
+    // If the home menu is being locked into the foreground, handle that.
-        if (!this->LockHomeMenuIntoForegroundLocked()) {
+    if (this->LockHomeMenuIntoForegroundLocked()) {
-            const bool overlay_takes_input = this->DoesOverlayTakeInputLocked();
+        return;
-
-            this->UpdateAppletStateLocked(m_overlay_display, true, overlay_takes_input);
-            this->UpdateAppletStateLocked(m_home_menu, m_foreground_requested_applet == m_home_menu, overlay_takes_input);
-            this->UpdateAppletStateLocked(m_application, m_foreground_requested_applet == m_application, overlay_takes_input);
-        }
     }
 
-    this->NotifyApplicationChangedIfNeeded();
+    bool overlay_blocks_input = false;
+    if (m_overlay_display) {
+        std::scoped_lock lk_overlay{m_overlay_display->lock};
+        overlay_blocks_input = m_overlay_display->overlay_in_foreground;
+    }
+
+    // Recursively update each applet root.
+    this->UpdateAppletStateLocked(m_home_menu, m_foreground_requested_applet == m_home_menu, overlay_blocks_input);
+    this->UpdateAppletStateLocked(m_application, m_foreground_requested_applet == m_application, overlay_blocks_input);
+    this->UpdateAppletStateLocked(m_overlay_display, true, false); // overlay is always updated, never blocked
 }
 
 void WindowSystem::TrackApplet(std::shared_ptr<Applet> applet, bool is_application) {
-    {
+    std::scoped_lock lk{m_lock};
-        std::scoped_lock lk{m_lock};
 
-        if (applet->applet_id == AppletId::QLaunch) {
+    if (applet->applet_id == AppletId::QLaunch) {
-            ASSERT(m_home_menu == nullptr);
+        ASSERT(m_home_menu == nullptr);
-            m_home_menu = applet.get();
+        m_home_menu = applet.get();
-        } else if (applet->applet_id == AppletId::OverlayDisplay) {
+    } else if (applet->applet_id == AppletId::OverlayDisplay) {
-            m_overlay_display = applet.get();
+        m_overlay_display = applet.get();
-        } else if (is_application) {
+    } else if (is_application) {
-            ASSERT(m_application == nullptr);
+        ASSERT(m_application == nullptr);
-            m_application = applet.get();
+        m_application = applet.get();
-        }
-
-        this->UpdateCurrentApplicationLocked();
-
-        m_event_observer->TrackAppletProcess(*applet);
-        m_applets.emplace(applet->aruid.pid, std::move(applet));
     }
 
-    this->NotifyApplicationChangedIfNeeded();
+    m_event_observer->TrackAppletProcess(*applet);
-}
+    m_applets.emplace(applet->aruid.pid, std::move(applet));
-
-void WindowSystem::UpdateCurrentApplicationLocked() {
-    const Applet* const candidate = m_application != nullptr ? m_application : m_home_menu;
-    if (candidate == nullptr) {
-        return;
-    }
-
-    auto* const process = candidate->process->GetHandle();
-    if (process == nullptr || process == m_system.Kernel().ApplicationProcess()) {
-        return;
-    }
-
-    LOG_INFO(Service_AM, "Current application is now {:016X}", candidate->program_id);
-
-    m_system.Kernel().SetApplicationProcess(process);
-    Settings::SetCurrentProgramID(candidate->program_id);
-
-    m_pending_application_notification = candidate->program_id;
-}
-
-void WindowSystem::NotifyApplicationChangedIfNeeded() {
-    std::optional<u64> program_id;
-    {
-        std::scoped_lock lk{m_lock};
-        program_id = std::exchange(m_pending_application_notification, std::nullopt);
-    }
-
-    if (!program_id.has_value()) {
-        return;
-    }
-
-    m_system.NotifyApplicationChanged(*program_id);
 }
 
 std::shared_ptr<Applet> WindowSystem::GetByAppletResourceUserId(u64 aruid) {
@@ -209,40 +169,18 @@ void WindowSystem::OnExitRequested() {
 }
 
 void WindowSystem::SendButtonAppletMessageLocked(AppletMessage message) {
-    const auto is_blocked = [message](const Applet& applet) {
+    if (m_home_menu) {
-        if (message == AppletMessage::DetectShortPressingHomeButton &&
+        std::scoped_lock lk_home{m_home_menu->lock};
-            applet.applet_id == AppletId::OverlayDisplay &&
+        m_home_menu->lifecycle_manager.PushUnorderedMessage(m_system.Kernel(), message);
-            !applet.overlay_watching_short_home_button) {
+    }
-            return true;
+    if (m_overlay_display) {
-        }
+        std::scoped_lock lk_overlay{m_overlay_display->lock};
-
+        m_overlay_display->lifecycle_manager.PushUnorderedMessage(m_system.Kernel(), message);
-        switch (message) {
+    }
-        case AppletMessage::DetectShortPressingHomeButton:
+    if (m_application) {
-            return applet.home_button_short_pressed_blocked;
+        std::scoped_lock lk_application{m_application->lock};
-        case AppletMessage::DetectLongPressingHomeButton:
+        m_application->lifecycle_manager.PushUnorderedMessage(m_system.Kernel(), message);
-            return applet.home_button_long_pressed_blocked;
+    }
-        default:
-            return false;
-        }
-    };
-
-    const auto send_to = [&](Applet* applet) {
-        if (!applet) {
-            return;
-        }
-        std::scoped_lock lk{applet->lock};
-        if (is_blocked(*applet)) {
-            LOG_DEBUG(Service_AM, "Applet {} is blocking message {}",
-                      static_cast<u32>(applet->applet_id), static_cast<u32>(message));
-            return;
-        }
-        applet->lifecycle_manager.PushUnorderedMessage(m_system.Kernel(), message);
-    };
-
-    send_to(m_home_menu);
-    send_to(m_overlay_display);
-    send_to(m_application);
-
     if (m_event_observer) {
         m_event_observer->RequestUpdate();
     }
@@ -254,9 +192,19 @@ void WindowSystem::OnSystemButtonPress(SystemButtonType type) {
     case SystemButtonType::HomeButtonShortPressing:
         SendButtonAppletMessageLocked(AppletMessage::DetectShortPressingHomeButton);
         break;
-    case SystemButtonType::HomeButtonLongPressing:
+    case SystemButtonType::HomeButtonLongPressing: {
+        // Toggle overlay foreground visibility on long home press
+        if (m_overlay_display) {
+            std::scoped_lock lk_overlay{m_overlay_display->lock};
+            m_overlay_display->overlay_in_foreground = !m_overlay_display->overlay_in_foreground;
+            LOG_INFO(Service_AM, "Overlay long-press toggle: overlay_in_foreground={} window_visible={}", m_overlay_display->overlay_in_foreground, m_overlay_display->window_visible);
+        }
         SendButtonAppletMessageLocked(AppletMessage::DetectLongPressingHomeButton);
-        break;
+        // Force a state update after toggling overlay
+        if (m_event_observer) {
+            m_event_observer->RequestUpdate();
+        }
+        break; }
     case SystemButtonType::CaptureButtonShortPressing:
         SendButtonAppletMessageLocked(AppletMessage::DetectShortPressingCaptureButton);
         break;
@@ -369,8 +317,6 @@ void WindowSystem::PruneTerminatedAppletsLocked() {
             m_overlay_display = nullptr;
         }
 
-        this->UpdateCurrentApplicationLocked();
-
         // Finalize applet.
         applet->OnProcessTerminatedLocked();
 
@@ -443,20 +389,7 @@ void WindowSystem::TerminateChildAppletsLocked(Applet* applet) {
     applet->lock.lock();
 }
 
-bool WindowSystem::IsOverlayOpenLocked(const Applet& overlay) const {
+void WindowSystem::UpdateAppletStateLocked(Applet* applet, bool is_foreground, bool overlay_blocking) {
-    return overlay.window_visible && overlay.overlay_watching_short_home_button;
-}
-
-bool WindowSystem::DoesOverlayTakeInputLocked() const {
-    if (m_overlay_display == nullptr) {
-        return false;
-    }
-
-    std::scoped_lock lk{m_overlay_display->lock};
-    return this->IsOverlayOpenLocked(*m_overlay_display);
-}
-
-void WindowSystem::UpdateAppletStateLocked(Applet* applet, bool is_foreground, bool overlay_takes_input) {
     // With no applet, we don't have anything to do.
     if (!applet) {
         return;
@@ -487,18 +420,24 @@ void WindowSystem::UpdateAppletStateLocked(Applet* applet, bool is_foreground, b
         return false;
     }();
 
-    const bool is_overlay = applet->applet_id == AppletId::OverlayDisplay;
-
     // Update visibility state.
-    const bool should_be_visible =
+    // Overlay applets should always be visible when window_visible is true, regardless of foreground state
-        is_overlay ? applet->window_visible : (is_foreground && applet->window_visible);
+    const bool should_be_visible = (applet->applet_id == AppletId::OverlayDisplay)
+                                     ? applet->window_visible
+                                     : (is_foreground && applet->window_visible);
     applet->display_layer_manager.SetWindowVisibility(should_be_visible);
 
-    const bool needs_hid_input =
-        is_overlay ? this->IsOverlayOpenLocked(*applet)
-                   : (is_foreground && applet->window_visible && !overlay_takes_input);
 
-    applet->SetInteractibleLocked(needs_hid_input, needs_hid_input);
+    const bool should_be_interactible = (applet->applet_id == AppletId::OverlayDisplay)
+                                          ? applet->overlay_in_foreground
+                                          : (is_foreground && applet->window_visible && !overlay_blocking);
+
+    if (applet->applet_id == AppletId::OverlayDisplay || applet->applet_id == AppletId::Application) {
+        LOG_DEBUG(Service_AM, "UpdateAppletStateLocked: applet={} overlay_in_foreground={} is_foreground={} window_visible={} overlay_blocking={} should_be_interactible={}",
+                 static_cast<u32>(applet->applet_id), applet->overlay_in_foreground, is_foreground, applet->window_visible, overlay_blocking, should_be_interactible);
+    }
+
+    applet->SetInteractibleLocked(should_be_interactible);
 
     // Update focus state and suspension.
     const bool is_obscured = has_obscuring_child_applets || !applet->window_visible;
@@ -514,18 +453,23 @@ void WindowSystem::UpdateAppletStateLocked(Applet* applet, bool is_foreground, b
         applet->UpdateSuspensionStateLocked(true);
     }
 
-    // Layer ordering. Composition sorts back-to-front. Now with enums for calrity.
+    // Z-index logic like in reference C# implementation (tuned for overlay extremes)
-    s32 z_index = Background;
+    s32 z_index = 0;
-    if (is_overlay) {
+    const bool now_foreground = inherited_foreground;
-        z_index = Overlay;
+    if (applet->applet_id == AppletId::OverlayDisplay) {
-    } else if (inherited_foreground) {
+        z_index = applet->overlay_in_foreground ? 100000 : -1;
-        z_index = is_obscured ? Foreground : ForegroundVisible;
+    } else if (now_foreground && !is_obscured) {
+        z_index = 2;
+    } else if (now_foreground) {
+        z_index = 1;
+    } else {
+        z_index = 0;
     }
     applet->display_layer_manager.SetOverlayZIndex(z_index);
 
     // Recurse into child applets.
     for (const auto& child_applet : applet->child_applets) {
-        this->UpdateAppletStateLocked(child_applet.get(), is_foreground, overlay_takes_input);
+        this->UpdateAppletStateLocked(child_applet.get(), is_foreground, overlay_blocking);
     }
 }
 

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

@@ -9,7 +9,6 @@
 #include <map>
 #include <memory>
 #include <mutex>
-#include <optional>
 
 #include "common/common_types.h"
 #include "core/hle/service/am/am_types.h"
@@ -61,16 +60,11 @@ public:
     void OnPowerButtonPressed(ButtonPressDuration type) {}
 
 private:
-    void UpdateCurrentApplicationLocked();
-    void NotifyApplicationChangedIfNeeded();
     void PruneTerminatedAppletsLocked();
     bool RestartAppletProcessLocked(Applet* applet);
     bool LockHomeMenuIntoForegroundLocked();
     void TerminateChildAppletsLocked(Applet* applet);
-    bool IsOverlayOpenLocked(const Applet& overlay) const;
+    void UpdateAppletStateLocked(Applet* applet, bool is_foreground, bool overlay_blocking = false);
-    bool DoesOverlayTakeInputLocked() const;
-
-    void UpdateAppletStateLocked(Applet* applet, bool is_foreground, bool overlay_takes_input);
     void SendButtonAppletMessageLocked(AppletMessage message);
 
 private:
@@ -94,7 +88,6 @@ private:
 
     // Applet map by aruid.
     std::map<u64, std::shared_ptr<Applet>> m_applets{};
-    std::optional<u64> m_pending_application_notification{};
 };
 
 } // namespace Service::AM

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

@@ -23,7 +23,6 @@
 #include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/server_manager.h"
-#include "core/hle/service/am/am_results.h"
 #include "core/loader/loader.h"
 
 namespace Service::AOC {
@@ -32,10 +31,6 @@ static bool CheckAOCTitleIDMatchesBase(u64 title_id, u64 base) {
     return FileSys::GetBaseTitleID(title_id) == base;
 }
 
-static u64 GetCallerBaseTitleID(Core::System& system, const ClientProcessId& process_id) {
-    return FileSys::GetBaseTitleID(system.ResolveCallerProgramId(*process_id));
-}
-
 static std::vector<u64> AccumulateAOCTitleIDs(Core::System& system) {
     std::vector<u64> add_on_content;
     const auto& rcu = system.GetContentProvider();
@@ -96,7 +91,7 @@ IAddOnContentManager::~IAddOnContentManager() {
 Result IAddOnContentManager::CountAddOnContent(Out<u32> out_count, ClientProcessId process_id) {
     LOG_DEBUG(Service_AOC, "called. process_id={}", process_id.pid);
 
-    const auto current = GetCallerBaseTitleID(system, process_id);
+    const auto current = system.GetApplicationProcessProgramID();
 
     const auto& disabled = Settings::values.disabled_addons[current];
     if (std::find(disabled.begin(), disabled.end(), "DLC") != disabled.end()) {
@@ -117,7 +112,7 @@ Result IAddOnContentManager::ListAddOnContent(Out<u32> out_count,
     LOG_DEBUG(Service_AOC, "called with offset={}, count={}, process_id={}", offset, count,
               process_id.pid);
 
-    const auto current = GetCallerBaseTitleID(system, process_id);
+    const auto current = FileSys::GetBaseTitleID(system.GetApplicationProcessProgramID());
 
     std::vector<u32> out;
     const auto& disabled = Settings::values.disabled_addons[current];
@@ -131,7 +126,8 @@ Result IAddOnContentManager::ListAddOnContent(Out<u32> out_count,
         }
     }
 
-    R_UNLESS(out.size() >= offset, AM::ResultApplicationRecordNotFound);
+    // TODO(DarkLordZach): Find the correct error code.
+    R_UNLESS(out.size() >= offset, ResultUnknown);
 
     *out_count = static_cast<u32>(std::min<size_t>(out.size() - offset, count));
     std::rotate(out.begin(), out.begin() + offset, out.end());
@@ -145,7 +141,7 @@ Result IAddOnContentManager::GetAddOnContentBaseId(Out<u64> out_title_id,
                                                    ClientProcessId process_id) {
     LOG_DEBUG(Service_AOC, "called. process_id={}", process_id.pid);
 
-    const auto title_id = system.ResolveCallerProgramId(*process_id);
+    const auto title_id = system.GetApplicationProcessProgramID();
     const FileSys::PatchManager pm{title_id, system.GetFileSystemController(),
                                    system.GetContentProvider()};
 

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

@@ -9,12 +9,13 @@
 #include "core/hle/service/ipc_helpers.h"
 
 namespace Service::Audio {
+using namespace AudioCore::AudioIn;
 
-IAudioIn::IAudioIn(Core::System& system_, AudioCore::AudioIn::Manager& manager, size_t session_id,
+IAudioIn::IAudioIn(Core::System& system_, Manager& manager, size_t session_id,
-                   const std::string& device_name, const AudioCore::AudioIn::AudioInParameter& in_params,
+                   const std::string& device_name, const AudioInParameter& in_params,
                    Kernel::KProcess* handle, u64 applet_resource_user_id)
     : ServiceFramework{system_, "IAudioIn"}, process{handle}, service_context{system_, "IAudioIn"},
-      event{service_context.CreateEvent("AudioInEvent")}, impl{std::make_shared<AudioCore::AudioIn::In>(system_,
+      event{service_context.CreateEvent("AudioInEvent")}, impl{std::make_shared<In>(system_,
                                                                                     manager, event,
                                                                                     session_id)} {
     // clang-format off
@@ -70,12 +71,12 @@ Result IAudioIn::Stop() {
     R_RETURN(impl->StopSystem());
 }
 
-Result IAudioIn::AppendAudioInBuffer(InArray<AudioCore::AudioIn::AudioInBuffer, BufferAttr_HipcMapAlias> buffer,
+Result IAudioIn::AppendAudioInBuffer(InArray<AudioInBuffer, BufferAttr_HipcMapAlias> buffer,
                                      u64 buffer_client_ptr) {
     R_RETURN(this->AppendAudioInBufferAuto(buffer, buffer_client_ptr));
 }
 
-Result IAudioIn::AppendAudioInBufferAuto(InArray<AudioCore::AudioIn::AudioInBuffer, BufferAttr_HipcAutoSelect> buffer,
+Result IAudioIn::AppendAudioInBufferAuto(InArray<AudioInBuffer, BufferAttr_HipcAutoSelect> buffer,
                                          u64 buffer_client_ptr) {
     if (buffer.empty()) {
         LOG_ERROR(Service_Audio, "Input buffer is too small for an AudioInBuffer!");

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

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -10,6 +7,7 @@
 #include "core/hle/service/cmif_serialization.h"
 
 namespace Service::Audio {
+using namespace AudioCore::AudioIn;
 
 IAudioInManager::IAudioInManager(Core::System& system_)
     : ServiceFramework{system_, "audin:u"}, impl{std::make_unique<AudioCore::AudioIn::Manager>(
@@ -36,11 +34,11 @@ Result IAudioInManager::ListAudioIns(
     R_RETURN(this->ListAudioInsAutoFiltered(out_audio_ins, out_count));
 }
 
-Result IAudioInManager::OpenAudioIn(Out<AudioCore::AudioIn::AudioInParameterInternal> out_parameter_internal,
+Result IAudioInManager::OpenAudioIn(Out<AudioInParameterInternal> out_parameter_internal,
                                     Out<SharedPointer<IAudioIn>> out_audio_in,
                                     OutArray<AudioDeviceName, BufferAttr_HipcMapAlias> out_name,
                                     InArray<AudioDeviceName, BufferAttr_HipcMapAlias> name,
-                                    AudioCore::AudioIn::AudioInParameter parameter,
+                                    AudioInParameter parameter,
                                     InCopyHandle<Kernel::KProcess> process_handle,
                                     ClientAppletResourceUserId aruid) {
     LOG_DEBUG(Service_Audio, "called");
@@ -55,9 +53,9 @@ Result IAudioInManager::ListAudioInsAuto(
 }
 
 Result IAudioInManager::OpenAudioInAuto(
-    Out<AudioCore::AudioIn::AudioInParameterInternal> out_parameter_internal, Out<SharedPointer<IAudioIn>> out_audio_in,
+    Out<AudioInParameterInternal> out_parameter_internal, Out<SharedPointer<IAudioIn>> out_audio_in,
     OutArray<AudioDeviceName, BufferAttr_HipcAutoSelect> out_name,
-    InArray<AudioDeviceName, BufferAttr_HipcAutoSelect> name, AudioCore::AudioIn::AudioInParameter parameter,
+    InArray<AudioDeviceName, BufferAttr_HipcAutoSelect> name, AudioInParameter parameter,
     InCopyHandle<Kernel::KProcess> process_handle, ClientAppletResourceUserId aruid) {
     LOG_DEBUG(Service_Audio, "called");
     R_RETURN(this->OpenAudioInProtocolSpecified(out_parameter_internal, out_audio_in, out_name,
@@ -72,10 +70,10 @@ Result IAudioInManager::ListAudioInsAutoFiltered(
 }
 
 Result IAudioInManager::OpenAudioInProtocolSpecified(
-    Out<AudioCore::AudioIn::AudioInParameterInternal> out_parameter_internal, Out<SharedPointer<IAudioIn>> out_audio_in,
+    Out<AudioInParameterInternal> out_parameter_internal, Out<SharedPointer<IAudioIn>> out_audio_in,
     OutArray<AudioDeviceName, BufferAttr_HipcAutoSelect> out_name,
     InArray<AudioDeviceName, BufferAttr_HipcAutoSelect> name, Protocol protocol,
-    AudioCore::AudioIn::AudioInParameter parameter, InCopyHandle<Kernel::KProcess> process_handle,
+    AudioInParameter parameter, InCopyHandle<Kernel::KProcess> process_handle,
     ClientAppletResourceUserId aruid) {
     LOG_DEBUG(Service_Audio, "called");
 
@@ -106,7 +104,7 @@ Result IAudioInManager::OpenAudioInProtocolSpecified(
 
     auto& out_system = impl->sessions[new_session_id]->GetSystem();
     *out_parameter_internal =
-        AudioCore::AudioIn::AudioInParameterInternal{.sample_rate = out_system.GetSampleRate(),
+        AudioInParameterInternal{.sample_rate = out_system.GetSampleRate(),
                                  .channel_count = out_system.GetChannelCount(),
                                  .sample_format = static_cast<u32>(out_system.GetSampleFormat()),
                                  .state = static_cast<u32>(out_system.GetState())};

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

@@ -13,9 +13,10 @@
 #include "core/hle/service/service.h"
 
 namespace Service::Audio {
+using namespace AudioCore::AudioOut;
 
-IAudioOut::IAudioOut(Core::System& system_, AudioCore::AudioOut::Manager& manager, size_t session_id,
+IAudioOut::IAudioOut(Core::System& system_, Manager& manager, size_t session_id,
-                     const std::string& device_name, const AudioCore::AudioOut::AudioOutParameter& in_params,
+                     const std::string& device_name, const AudioOutParameter& in_params,
                      Kernel::KProcess* handle, u64 applet_resource_user_id)
     : ServiceFramework{system_, "IAudioOut"}, service_context{system_, "IAudioOut"},
       event{service_context.CreateEvent("AudioOutEvent")}, process{handle},
@@ -67,12 +68,12 @@ Result IAudioOut::Stop() {
 }
 
 Result IAudioOut::AppendAudioOutBuffer(
-    InArray<AudioCore::AudioOut::AudioOutBuffer, BufferAttr_HipcMapAlias> audio_out_buffer, u64 buffer_client_ptr) {
+    InArray<AudioOutBuffer, BufferAttr_HipcMapAlias> audio_out_buffer, u64 buffer_client_ptr) {
     R_RETURN(this->AppendAudioOutBufferAuto(audio_out_buffer, buffer_client_ptr));
 }
 
 Result IAudioOut::AppendAudioOutBufferAuto(
-    InArray<AudioCore::AudioOut::AudioOutBuffer, BufferAttr_HipcAutoSelect> audio_out_buffer, u64 buffer_client_ptr) {
+    InArray<AudioOutBuffer, BufferAttr_HipcAutoSelect> audio_out_buffer, u64 buffer_client_ptr) {
     if (audio_out_buffer.empty()) {
         LOG_ERROR(Service_Audio, "Input buffer is too small for an AudioOutBuffer!");
         R_THROW(Audio::ResultInsufficientBuffer);

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

@@ -11,6 +11,7 @@
 #include "core/memory.h"
 
 namespace Service::Audio {
+using namespace AudioCore::AudioOut;
 
 IAudioOutManager::IAudioOutManager(Core::System& system_)
     : ServiceFramework{system_, "audout:u"}
@@ -35,11 +36,11 @@ Result IAudioOutManager::ListAudioOuts(
     R_RETURN(this->ListAudioOutsAuto(out_audio_outs, out_count));
 }
 
-Result IAudioOutManager::OpenAudioOut(Out<AudioCore::AudioOut::AudioOutParameterInternal> out_parameter_internal,
+Result IAudioOutManager::OpenAudioOut(Out<AudioOutParameterInternal> out_parameter_internal,
                                       Out<SharedPointer<IAudioOut>> out_audio_out,
                                       OutArray<AudioDeviceName, BufferAttr_HipcMapAlias> out_name,
                                       InArray<AudioDeviceName, BufferAttr_HipcMapAlias> name,
-                                      AudioCore::AudioOut::AudioOutParameter parameter,
+                                      AudioOutParameter parameter,
                                       InCopyHandle<Kernel::KProcess> process_handle,
                                       ClientAppletResourceUserId aruid) {
     R_RETURN(this->OpenAudioOutAuto(out_parameter_internal, out_audio_out, out_name, name,
@@ -61,10 +62,10 @@ Result IAudioOutManager::ListAudioOutsAuto(
 }
 
 Result IAudioOutManager::OpenAudioOutAuto(
-    Out<AudioCore::AudioOut::AudioOutParameterInternal> out_parameter_internal,
+    Out<AudioOutParameterInternal> out_parameter_internal,
     Out<SharedPointer<IAudioOut>> out_audio_out,
     OutArray<AudioDeviceName, BufferAttr_HipcAutoSelect> out_name,
-    InArray<AudioDeviceName, BufferAttr_HipcAutoSelect> name, AudioCore::AudioOut::AudioOutParameter parameter,
+    InArray<AudioDeviceName, BufferAttr_HipcAutoSelect> name, AudioOutParameter parameter,
     InCopyHandle<Kernel::KProcess> process_handle, ClientAppletResourceUserId aruid) {
     if (!process_handle) {
         LOG_ERROR(Service_Audio, "Failed to get process handle");
@@ -94,7 +95,7 @@ Result IAudioOutManager::OpenAudioOutAuto(
 
     auto& out_system = impl->sessions[new_session_id]->GetSystem();
     *out_parameter_internal =
-        AudioCore::AudioOut::AudioOutParameterInternal{.sample_rate = out_system.GetSampleRate(),
+        AudioOutParameterInternal{.sample_rate = out_system.GetSampleRate(),
                                   .channel_count = out_system.GetChannelCount(),
                                   .sample_format = static_cast<u32>(out_system.GetSampleFormat()),
                                   .state = static_cast<u32>(out_system.GetState())};

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

@@ -4,20 +4,21 @@
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "audio_core/renderer/audio_renderer.h"
 #include "core/hle/service/audio/audio_renderer.h"
 #include "core/hle/service/cmif_serialization.h"
 
 namespace Service::Audio {
+using namespace AudioCore::Renderer;
 
-IAudioRenderer::IAudioRenderer(Core::System& system_, AudioCore::Renderer::Manager& manager_,
+IAudioRenderer::IAudioRenderer(Core::System& system_, Manager& manager_,
                                AudioCore::AudioRendererParameterInternal& params,
                                Kernel::KTransferMemory* transfer_memory, u64 transfer_memory_size,
                                Kernel::KProcess* process_handle_, u64 applet_resource_user_id,
                                s32 session_id)
     : ServiceFramework{system_, "IAudioRenderer"}, service_context{system_, "IAudioRenderer"},
       rendered_event{service_context.CreateEvent("IAudioRendererEvent")}, manager{manager_},
-      impl{std::make_unique<AudioCore::Renderer::Renderer>(system_, manager, rendered_event)}, process_handle{process_handle_} {
+      impl{std::make_unique<Renderer>(system_, manager, rendered_event)}, process_handle{
+                                                                              process_handle_} {
     // clang-format off
     static const FunctionInfo functions[] = {
         {0, D<&IAudioRenderer::GetSampleRate>, "GetSampleRate"},

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

@@ -24,8 +24,8 @@ static u64 GetCurrentBuildID(const Core::System::CurrentBuildProcessID& id) {
     return out;
 }
 
-IBcatService::IBcatService(Core::System& system_, BcatBackend& backend_, u64 program_id_)
+IBcatService::IBcatService(Core::System& system_, BcatBackend& backend_)
-    : ServiceFramework{system_, "IBcatService"}, backend{backend_}, program_id{program_id_},
+    : ServiceFramework{system_, "IBcatService"}, backend{backend_},
       progress{{
           ProgressServiceBackend{system_, "Normal"},
           ProgressServiceBackend{system_, "Directory"},
@@ -70,7 +70,8 @@ Result IBcatService::RequestSyncDeliveryCache(
     LOG_DEBUG(Service_BCAT, "called");
 
     auto& progress_backend{GetProgressBackend(SyncType::Normal)};
-    backend.Synchronize(system.Kernel(), {program_id, GetCurrentBuildID(system.GetApplicationProcessBuildID())},
+    backend.Synchronize(system.Kernel(), {system.GetApplicationProcessProgramID(),
+                         GetCurrentBuildID(system.GetApplicationProcessBuildID())},
                         GetProgressBackend(SyncType::Normal));
 
     *out_interface = std::make_shared<IDeliveryCacheProgressService>(
@@ -85,8 +86,9 @@ Result IBcatService::RequestSyncDeliveryCacheWithDirectoryName(
     LOG_DEBUG(Service_BCAT, "called, name={}", name);
 
     auto& progress_backend{GetProgressBackend(SyncType::Directory)};
-    backend.SynchronizeDirectory(system.Kernel(), {program_id, GetCurrentBuildID(system.GetApplicationProcessBuildID())},
+    backend.SynchronizeDirectory(system.Kernel(), {system.GetApplicationProcessProgramID(),
-        name, progress_backend);
+                                  GetCurrentBuildID(system.GetApplicationProcessBuildID())},
+                                 name, progress_backend);
 
     *out_interface = std::make_shared<IDeliveryCacheProgressService>(
         system, progress_backend.GetEvent(), progress_backend.GetImpl());

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

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -22,7 +19,7 @@ class IDeliveryCacheProgressService;
 
 class IBcatService final : public ServiceFramework<IBcatService> {
 public:
-    explicit IBcatService(Core::System& system_, BcatBackend& backend_, u64 program_id_);
+    explicit IBcatService(Core::System& system_, BcatBackend& backend_);
     ~IBcatService() override;
 
 private:
@@ -42,7 +39,6 @@ private:
     const ProgressServiceBackend& GetProgressBackend(SyncType type) const;
 
     BcatBackend& backend;
-    u64 program_id;
     std::array<ProgressServiceBackend, static_cast<size_t>(SyncType::Count)> progress;
 };
 

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

@@ -14,13 +14,16 @@
 #include <cstring>
 
 namespace Service::News {
+namespace {
 
-[[nodiscard]] inline std::string_view ToStringViewNDS(std::span<const char> buf) {
+std::string_view ToStringView(std::span<const char> buf) {
     const std::string_view sv{buf.data(), buf.size()};
     const auto nul = sv.find('\0');
     return nul == std::string_view::npos ? sv : sv.substr(0, nul);
 }
 
+} // namespace
+
 INewsDataService::INewsDataService(Core::System& system_)
     : ServiceFramework{system_, "INewsDataService"} {
     static const FunctionInfo functions[] = {
@@ -52,7 +55,7 @@ bool INewsDataService::TryOpen(std::string_view key, std::string_view user) {
 
     const auto list = NewsStorage::Instance().ListAll();
     if (!list.empty()) {
-        if (auto found = NewsStorage::Instance().FindByNewsId(ToStringViewNDS(list.front().news_id))) {
+        if (auto found = NewsStorage::Instance().FindByNewsId(ToStringView(list.front().news_id))) {
             opened_payload = std::move(found->payload);
             return true;
         }
@@ -64,7 +67,7 @@ bool INewsDataService::TryOpen(std::string_view key, std::string_view user) {
 Result INewsDataService::Open(InBuffer<BufferAttr_HipcMapAlias> name) {
     EnsureBuiltinNewsLoaded();
 
-    const auto key = ToStringViewNDS({reinterpret_cast<const char*>(name.data()), name.size()});
+    const auto key = ToStringView({reinterpret_cast<const char*>(name.data()), name.size()});
 
     if (TryOpen(key, {})) {
         R_SUCCEED();
@@ -76,8 +79,8 @@ Result INewsDataService::Open(InBuffer<BufferAttr_HipcMapAlias> name) {
 Result INewsDataService::OpenWithNewsRecordV1(NewsRecordV1 record) {
     EnsureBuiltinNewsLoaded();
 
-    const auto key = ToStringViewNDS(record.news_id);
+    const auto key = ToStringView(record.news_id);
-    const auto user = ToStringViewNDS(record.user_id);
+    const auto user = ToStringView(record.user_id);
 
     if (TryOpen(key, user)) {
         R_SUCCEED();
@@ -89,8 +92,8 @@ Result INewsDataService::OpenWithNewsRecordV1(NewsRecordV1 record) {
 Result INewsDataService::OpenWithNewsRecord(NewsRecord record) {
     EnsureBuiltinNewsLoaded();
 
-    const auto key = ToStringViewNDS(record.news_id);
+    const auto key = ToStringView(record.news_id);
-    const auto user = ToStringViewNDS(record.user_id);
+    const auto user = ToStringView(record.user_id);
 
     if (TryOpen(key, user)) {
         R_SUCCEED();

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

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -15,13 +15,13 @@
 namespace Service::News {
 namespace {
 
-[[nodiscard]] inline std::string_view ToStringView(std::span<const u8> buf) {
+std::string_view ToStringView(std::span<const u8> buf) {
     if (buf.empty()) return {};
     auto data = reinterpret_cast<const char*>(buf.data());
     return {data, strnlen(data, buf.size())};
 }
 
-[[nodiscard]] inline std::string_view ToStringView(std::span<const char> buf) {
+std::string_view ToStringView(std::span<const char> buf) {
     if (buf.empty()) return {};
     return {buf.data(), strnlen(buf.data(), buf.size())};
 }

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

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -9,8 +6,6 @@
 
 namespace Service::News {
 
-#undef CreateEvent
-
 IOverwriteEventHolder::IOverwriteEventHolder(Core::System& system_)
     : ServiceFramework{system_, "IOverwriteEventHolder"}, service_context{system_,
                                                                           "IOverwriteEventHolder"} {

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

@@ -1,10 +1,6 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "core/core.h"
 #include "core/hle/service/bcat/bcat_service.h"
 #include "core/hle/service/bcat/delivery_cache_storage_service.h"
 #include "core/hle/service/bcat/service_creator.h"
@@ -41,8 +37,7 @@ IServiceCreator::~IServiceCreator() = default;
 Result IServiceCreator::CreateBcatService(ClientProcessId process_id,
                                           OutInterface<IBcatService> out_interface) {
     LOG_INFO(Service_BCAT, "called, process_id={}", process_id.pid);
-    *out_interface =
+    *out_interface = std::make_shared<IBcatService>(system, *backend);
-        std::make_shared<IBcatService>(system, *backend, system.ResolveCallerProgramId(*process_id));
     R_SUCCEED();
 }
 
@@ -50,7 +45,7 @@ Result IServiceCreator::CreateDeliveryCacheStorageService(
     ClientProcessId process_id, OutInterface<IDeliveryCacheStorageService> out_interface) {
     LOG_INFO(Service_BCAT, "called, process_id={}", process_id.pid);
 
-    const auto title_id = system.ResolveCallerProgramId(*process_id);
+    const auto title_id = system.GetApplicationProcessProgramID();
     *out_interface =
         std::make_shared<IDeliveryCacheStorageService>(system, fsc.GetBCATDirectory(title_id));
     R_SUCCEED();

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

@@ -18,8 +18,6 @@
 #include "core/hle/service/service.h"
 #include "core/hle/service/sm/sm.h"
 
-#undef GetCurrentTime
-
 namespace Service::Capture {
 
 AlbumManager::AlbumManager(Core::System& system_) : system{system_} {}
@@ -245,15 +243,10 @@ Result AlbumManager::SaveScreenShot(ApplicationAlbumEntry& out_entry,
     return SaveScreenShot(out_entry, attribute, report_option, {}, image_data, aruid);
 }
 
-Result AlbumManager::SaveScreenShot(ApplicationAlbumEntry& out_entry,
+Result AlbumManager::SaveScreenShot(ApplicationAlbumEntry& out_entry, const ScreenShotAttribute& attribute, AlbumReportOption report_option, const ApplicationData& app_data, std::span<const u8> image_data, u64 aruid) {
-                                    const ScreenShotAttribute& attribute,
-                                    AlbumReportOption report_option,
-                                    const ApplicationData& app_data, std::span<const u8> image_data,
-                                    u64 aruid) {
     R_UNLESS(!image_data.empty(), ResultUnknown); //TODO: ???
 
-    const u64 title_id = system.ResolveCallerProgramId(aruid);
+    const u64 title_id = system.GetApplicationProcessProgramID();
-
     auto static_service =
         system.ServiceManager().GetService<Service::Glue::Time::StaticService>("time:u", true);
 

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

@@ -95,8 +95,7 @@ void IScreenShotApplicationService::CaptureAndSaveScreenshot(AlbumReportOption r
             manager->FlipVerticallyOnWrite(invert_y);
             manager->SaveScreenShot(entry, attribute, report_option, image_data, {});
         },
-        layout,
+        layout);
-        Nvnflinger::LayerStackId::Screenshot);
 }
 
 } // namespace Service::Capture

src/core/hle/service/fatal/fatal.cpp

@@ -19,8 +19,6 @@
 #include "core/hle/service/server_manager.h"
 #include "core/reporter.h"
 
-#undef far
-
 namespace Service::Fatal {
 
 Module::Interface::Interface(std::shared_ptr<Module> module_, Core::System& system_,

src/core/hle/service/filesystem/filesystem.cpp

@@ -32,10 +32,6 @@
 #include "core/hle/service/server_manager.h"
 #include "core/loader/loader.h"
 
-#undef CreateFile
-#undef DeleteFile
-#undef CreateDirectory
-
 namespace Service::FileSystem {
 
 static FileSys::VirtualDir GetDirectoryRelativeWrapped(FileSys::VirtualDir base,

src/core/hle/service/filesystem/fsp/fs_i_storage.cpp

@@ -3,6 +3,9 @@
 
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
+#include <chrono>
+#include <thread>
+#include "common/settings.h"
 
 #include "core/file_sys/errors.h"
 #include "core/hle/service/cmif_serialization.h"
@@ -30,6 +33,15 @@ Result IStorage::Read(
 
     R_UNLESS(length >= 0, FileSys::ResultInvalidSize);
     R_UNLESS(offset >= 0, FileSys::ResultInvalidOffset);
+    static thread_local std::chrono::steady_clock::time_point last_read_tick{};
+    const auto now = std::chrono::steady_clock::now();
+    const auto period = Settings::values.debug_knobs.GetValue();
+    const auto ReadInterval = std::chrono::microseconds{period};
+    if (last_read_tick != std::chrono::steady_clock::time_point{} &&
+        now - last_read_tick < ReadInterval) {
+        std::this_thread::sleep_for(ReadInterval - (now - last_read_tick));
+    }
+    last_read_tick = std::chrono::steady_clock::now();
 
     // Read the data from the Storage backend
     backend->Read(out_bytes.data(), length, offset);

src/core/hle/service/hid/hid_server.cpp

@@ -1164,7 +1164,7 @@ Result IHidServer::InitializeSevenSixAxisSensor(ClientAppletResourceUserId aruid
     GetResourceManager()->GetConsoleSixAxis()->Activate();
     GetResourceManager()->GetSevenSixAxis()->Activate();
 
-    GetResourceManager()->GetSevenSixAxis()->SetTransferMemoryAddress(t_mem_1->GetSourceAddress(), t_mem_1->GetOwner());
+    GetResourceManager()->GetSevenSixAxis()->SetTransferMemoryAddress(t_mem_1->GetSourceAddress());
 
     R_SUCCEED();
 }

src/core/hle/service/hid/hidbus.cpp

@@ -312,7 +312,7 @@ Result Hidbus::EnableJoyPollingReceiveMode(u32 t_mem_size, JoyPollingMode pollin
 
     auto& device = devices[device_index.value()].device;
     device->SetPollingMode(polling_mode);
-    device->SetTransferMemoryAddress(t_mem->GetSourceAddress(), t_mem->GetOwner());
+    device->SetTransferMemoryAddress(t_mem->GetSourceAddress());
     R_SUCCEED();
 }
 

src/core/hle/service/hid/irs.cpp

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -150,7 +147,7 @@ Result IRS::RunImageTransferProcessor(
     MakeProcessorWithCoreContext<ImageTransferProcessor>(camera_handle, device);
     auto& image_transfer_processor = GetProcessor<ImageTransferProcessor>(camera_handle);
     image_transfer_processor.SetConfig(processor_config);
-    image_transfer_processor.SetTransferMemoryAddress(t_mem->GetSourceAddress(), t_mem->GetOwner());
+    image_transfer_processor.SetTransferMemoryAddress(t_mem->GetSourceAddress());
     npad_device->SetPollingMode(Core::HID::EmulatedDeviceIndex::RightIndex,
                                 Common::Input::PollingMode::IR);
 
@@ -298,8 +295,7 @@ Result IRS::RunImageTransferExProcessor(
     MakeProcessorWithCoreContext<ImageTransferProcessor>(camera_handle, device);
     auto& image_transfer_processor = GetProcessor<ImageTransferProcessor>(camera_handle);
     image_transfer_processor.SetConfig(processor_config);
-    image_transfer_processor.SetTransferMemoryAddress(t_mem->GetSourceAddress(),
+    image_transfer_processor.SetTransferMemoryAddress(t_mem->GetSourceAddress());
-                                                      t_mem->GetOwner());
     npad_device->SetPollingMode(Core::HID::EmulatedDeviceIndex::RightIndex,
                                 Common::Input::PollingMode::IR);
 

src/core/hle/service/hle_ipc.cpp

@@ -27,8 +27,6 @@
 #include "core/hle/service/ipc_helpers.h"
 #include "core/memory.h"
 
-#undef SendMessage
-
 namespace Service {
 
 SessionRequestHandler::SessionRequestHandler(Kernel::KernelCore& kernel_, const char* service_name_)

src/core/hle/service/jit/jit.cpp

@@ -35,7 +35,7 @@ public:
         , process{kernel, process_}
         , user_rx{std::move(user_rx_)}
         , user_ro{std::move(user_ro_)}
-        , context{process_->GetMemory()}
+        , context{system_.ApplicationMemory()}
     {
 
         // clang-format off

src/core/hle/service/nifm/nifm.cpp

@@ -212,9 +212,8 @@ struct NifmNetworkProfileData {
     NifmWirelessSettingData wireless_setting_data{};
     IpSettingData ip_setting_data{};
 };
-static_assert(sizeof(NifmNetworkProfileData) == 0x18E,
-              "NifmNetworkProfileData has incorrect size.");
 #pragma pack(pop)
+static_assert(sizeof(NifmNetworkProfileData) == 0x18E, "NifmNetworkProfileData has incorrect size.");
 
 struct PendingProfile {
     std::array<char, 0x21> ssid{};

src/core/hle/service/ns/read_only_application_control_data_interface.cpp

@@ -9,12 +9,15 @@
 #include <optional>
 #include <string>
 
-#include "common/stb.h"
+#define STBI_ONLY_JPEG 1
+#include <stb_image.h>
+#include <stb_image_resize.h>
+#include <stb_image_write.h>
+
 #include "common/settings.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/file_sys/vfs/vfs.h"
-#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_transfer_memory.h"
 #include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/ns/language.h"
@@ -333,8 +336,8 @@ void IReadOnlyApplicationControlDataInterface::ListApplicationTitle(HLERequestCo
 
     constexpr s32 data_offset = 0;
 
-    if (t_mem != nullptr && t_mem->GetOwner() != nullptr && app_count > 0) {
+    if (t_mem != nullptr && app_count > 0) {
-        auto& memory = t_mem->GetOwner()->GetMemory();
+        auto& memory = system.ApplicationMemory();
         const auto t_mem_address = t_mem->GetSourceAddress();
 
         for (size_t i = 0; i < app_count; ++i) {

src/core/hle/service/nvdrv/devices/nvdisp_disp0.cpp

@@ -77,7 +77,6 @@ void nvdisp_disp0::Composite(std::span<const Nvnflinger::HwcLayer> sorted_layers
             .transform_flags = layer.transform,
             .crop_rect = layer.crop_rect,
             .blending = ConvertBlending(layer.blending),
-            .layer_stack_mask = layer.layer_stack_mask,
         });
 
         for (size_t i = 0; i < layer.acquire_fence.num_fences; i++) {

src/core/hle/service/nvdrv/devices/nvhost_gpu.cpp

@@ -69,7 +69,7 @@ NvResult nvhost_gpu::Ioctl1(DeviceFD fd, Ioctl command, std::span<const u8> inpu
         case 0x3:
             return WrapFixed(this, &nvhost_gpu::ChannelSetTimeout, input, output);
         case 0x8:
-            return WrapFixedVariable(this, &nvhost_gpu::SubmitGPFIFOBase1, input, output, fd, false);
+            return WrapFixedVariable(this, &nvhost_gpu::SubmitGPFIFOBase1, input, output, false);
         case 0x9:
             return WrapFixed(this, &nvhost_gpu::AllocateObjectContext, input, output);
         case 0xb:
@@ -83,7 +83,7 @@ NvResult nvhost_gpu::Ioctl1(DeviceFD fd, Ioctl command, std::span<const u8> inpu
         case 0x1a:
             return WrapFixed(this, &nvhost_gpu::AllocGPFIFOEx2, input, output, fd);
         case 0x1b:
-            return WrapFixedVariable(this, &nvhost_gpu::SubmitGPFIFOBase1, input, output, fd, true);
+            return WrapFixedVariable(this, &nvhost_gpu::SubmitGPFIFOBase1, input, output, true);
         case 0x1d:
             return WrapFixed(this, &nvhost_gpu::ChannelSetTimeslice, input, output);
         default:
@@ -387,19 +387,8 @@ NvResult nvhost_gpu::SubmitGPFIFOImpl(IoctlSubmitGpfifo& params, Tegra::CommandL
     return NvResult::Success;
 }
 
-Core::Memory::Memory& nvhost_gpu::GetSessionMemory(DeviceFD fd) {
-    if (const auto it = sessions.find(fd); it != sessions.end())
-        if (auto* const session = core.GetSession(it->second);
-            session != nullptr && session->process != nullptr)
-            return session->process->GetMemory();
-
-    LOG_ERROR(Service_NVDRV, "No session for fd={}, falling back to application memory", fd);
-    return system.ApplicationMemory();
-}
-
 NvResult nvhost_gpu::SubmitGPFIFOBase1(IoctlSubmitGpfifo& params,
-                                       std::span<Tegra::CommandListHeader> commands, DeviceFD fd,
+                                       std::span<Tegra::CommandListHeader> commands, bool kickoff) {
-                                       bool kickoff) {
     if (params.num_entries > commands.size()) {
         UNIMPLEMENTED();
         return NvResult::InvalidSize;
@@ -407,7 +396,7 @@ NvResult nvhost_gpu::SubmitGPFIFOBase1(IoctlSubmitGpfifo& params,
 
     Tegra::CommandList entries(params.num_entries);
     if (kickoff) {
-        this->GetSessionMemory(fd).ReadBlock(params.address, entries.command_lists.data(),
+        system.ApplicationMemory().ReadBlock(params.address, entries.command_lists.data(),
                                              params.num_entries * sizeof(Tegra::CommandListHeader));
     } else {
         std::memcpy(entries.command_lists.data(), commands.data(),

src/core/hle/service/nvdrv/devices/nvhost_gpu.h

@@ -16,10 +16,6 @@
 #include "core/hle/service/nvdrv/nvdata.h"
 #include "video_core/dma_pusher.h"
 
-namespace Core::Memory {
-class Memory;
-}
-
 namespace Tegra {
 namespace Control {
 struct ChannelState;
@@ -200,11 +196,8 @@ private:
 
     NvResult SubmitGPFIFOImpl(IoctlSubmitGpfifo& params, Tegra::CommandList&& entries);
 
-    Core::Memory::Memory& GetSessionMemory(DeviceFD fd);
-
     NvResult SubmitGPFIFOBase1(IoctlSubmitGpfifo& params,
-                               std::span<Tegra::CommandListHeader> commands, DeviceFD fd,
+                               std::span<Tegra::CommandListHeader> commands, bool kickoff = false);
-                               bool kickoff = false);
     NvResult SubmitGPFIFOBase2(IoctlSubmitGpfifo& params,
                                std::span<const Tegra::CommandListHeader> commands);
 

src/core/hle/service/nvnflinger/display.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -15,8 +15,7 @@ struct Layer {
     explicit Layer(std::shared_ptr<android::BufferItemConsumer> buffer_item_consumer_,
                    s32 consumer_id_)
         : buffer_item_consumer(std::move(buffer_item_consumer_)), consumer_id(consumer_id_),
-          blending(LayerBlending::None), visible(true), z_index(0), is_overlay(false),
+          blending(LayerBlending::None), visible(true), z_index(0), is_overlay(false) {}
-          layer_stack_mask(DefaultLayerStackMask) {}
     ~Layer() {
         buffer_item_consumer->Abandon();
     }
@@ -27,7 +26,6 @@ struct Layer {
     bool visible;
     s32 z_index;
     bool is_overlay;
-    u32 layer_stack_mask;
 };
 
 struct LayerStack {

src/core/hle/service/nvnflinger/hardware_composer.cpp

@@ -115,7 +115,6 @@ u32 HardwareComposer::ComposeLocked(f32* out_speed_scale, Display& display,
                 .transform = static_cast<android::BufferTransformFlags>(item.transform),
                 .crop_rect = item.crop,
                 .acquire_fence = item.fence,
-                .layer_stack_mask = layer->layer_stack_mask,
             });
         }
 

src/core/hle/service/nvnflinger/hwc_layer.h

@@ -1,6 +1,3 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -26,25 +23,6 @@ enum class LayerBlending : u32 {
     Coverage = 0x405,
 };
 
-enum class LayerStackId : u32 {
-    Default = 0,
-    Lcd = 1,
-    Screenshot = 2,
-    Recording = 3,
-    LastFrame = 4,
-    Arbitrary = 5,
-    ApplicationForDebug = 6,
-    Null = 10,
-};
-
-constexpr u32 LayerStackBit(LayerStackId id) {
-    return 1U << static_cast<u32>(id);
-}
-
-constexpr u32 DefaultLayerStackMask =
-    LayerStackBit(LayerStackId::Default) | LayerStackBit(LayerStackId::Screenshot) |
-    LayerStackBit(LayerStackId::Recording) | LayerStackBit(LayerStackId::LastFrame);
-
 struct HwcLayer {
     u32 buffer_handle;
     u32 offset;
@@ -57,7 +35,6 @@ struct HwcLayer {
     android::BufferTransformFlags transform;
     Common::Rectangle<int> crop_rect;
     android::Fence acquire_fence;
-    u32 layer_stack_mask;
 };
 
 } // namespace Service::Nvnflinger

src/core/hle/service/nvnflinger/surface_flinger.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -104,14 +104,6 @@ void SurfaceFlinger::SetLayerBlending(s32 consumer_binder_id, LayerBlending blen
     }
 }
 
-void SurfaceFlinger::SetLayerStackMask(s32 consumer_binder_id, u32 layer_stack_mask) {
-    if (const auto layer = this->FindLayer(consumer_binder_id); layer != nullptr) {
-        layer->layer_stack_mask = layer_stack_mask;
-        LOG_DEBUG(Service_VI, "Layer {} stack mask set to {:#x}", consumer_binder_id,
-                  layer_stack_mask);
-    }
-}
-
 void SurfaceFlinger::SetLayerIsOverlay(s32 consumer_binder_id, bool is_overlay) {
     if (const auto layer = this->FindLayer(consumer_binder_id); layer != nullptr) {
         layer->is_overlay = is_overlay;

src/core/hle/service/nvnflinger/surface_flinger.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -48,7 +48,6 @@ public:
     void SetLayerVisibility(s32 consumer_binder_id, bool visible);
     void SetLayerBlending(s32 consumer_binder_id, LayerBlending blending);
     void SetLayerIsOverlay(s32 consumer_binder_id, bool is_overlay);
-    void SetLayerStackMask(s32 consumer_binder_id, u32 layer_stack_mask);
 
     std::shared_ptr<Layer> FindLayer(s32 consumer_binder_id);
 

src/core/hle/service/pctl/parental_control_service.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
@@ -13,10 +13,8 @@
 
 namespace Service::PCTL {
 
-IParentalControlService::IParentalControlService(Core::System& system_, Capability capability_,
+IParentalControlService::IParentalControlService(Core::System& system_, Capability capability_)
-                                                 u64 program_id_)
     : ServiceFramework{system_, "IParentalControlService"}, capability{capability_},
-      program_id{program_id_},
       service_context{system_, "IParentalControlService"}, synchronization_event{service_context},
       unlinked_event{service_context}, request_suspension_event{service_context} {
     // clang-format off
@@ -204,6 +202,7 @@ Result IParentalControlService::Initialize() {
 
     // TODO(ogniK): Recovery flag initialization for pctl:r
 
+    const auto program_id = system.GetApplicationProcessProgramID();
     if (program_id != 0) {
         const FileSys::PatchManager pm{program_id, system.GetFileSystemController(),
                                        system.GetContentProvider()};

src/core/hle/service/pctl/parental_control_service.h

@@ -16,8 +16,7 @@ namespace Service::PCTL {
 
 class IParentalControlService final : public ServiceFramework<IParentalControlService> {
 public:
-    explicit IParentalControlService(Core::System& system_, Capability capability_,
+    explicit IParentalControlService(Core::System& system_, Capability capability_);
-                                     u64 program_id_);
     ~IParentalControlService() override;
 
 private:
@@ -85,7 +84,6 @@ private:
     RestrictionSettings restriction_settings{};
     std::array<char, 8> pin_code{};
     Capability capability{};
-    u64 program_id{};
     // TODO: this is raw
     PlayTimerSettings raw_play_timer_settings{};
 

src/core/hle/service/pctl/parental_control_service_factory.cpp

@@ -1,10 +1,6 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "core/core.h"
 #include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/pctl/parental_control_service.h"
 #include "core/hle/service/pctl/parental_control_service_factory.h"
@@ -27,17 +23,17 @@ IParentalControlServiceFactory::~IParentalControlServiceFactory() = default;
 
 Result IParentalControlServiceFactory::CreateService(
     Out<SharedPointer<IParentalControlService>> out_service, ClientProcessId process_id) {
-    LOG_DEBUG(Service_PCTL, "called, process_id={}", process_id.pid);
+    LOG_DEBUG(Service_PCTL, "called");
-    *out_service = std::make_shared<IParentalControlService>(
+    // TODO(ogniK): Get application id from process
-        system, capability, system.ResolveCallerProgramId(*process_id));
+    *out_service = std::make_shared<IParentalControlService>(system, capability);
     R_SUCCEED();
 }
 
 Result IParentalControlServiceFactory::CreateServiceWithoutInitialize(
     Out<SharedPointer<IParentalControlService>> out_service, ClientProcessId process_id) {
-    LOG_DEBUG(Service_PCTL, "called, process_id={}", process_id.pid);
+    LOG_DEBUG(Service_PCTL, "called");
-    *out_service = std::make_shared<IParentalControlService>(
+    // TODO(ogniK): Get application id from process
-        system, capability, system.ResolveCallerProgramId(*process_id));
+    *out_service = std::make_shared<IParentalControlService>(system, capability);
     R_SUCCEED();
 }
 

src/core/hle/service/pm/pm.cpp

@@ -132,7 +132,8 @@ private:
 
         LOG_WARNING(Service_PM, "(Partial Implementation) called, pid={:016X}", pid);
 
-        auto process = kernel.GetProcessByProcessId(pid);
+        auto list = kernel.GetProcessList();
+        auto process = SearchProcessList(system.Kernel(), list, [pid](auto& p) { return p->GetProcessId() == pid; });
 
         if (process.IsNull()) {
             IPC::ResponseBuilder rb{ctx, 2};
@@ -185,7 +186,9 @@ private:
 
         LOG_DEBUG(Service_PM, "called, process_id={:016X}", process_id);
 
-        auto process = kernel.GetProcessByProcessId(process_id);
+        auto list = kernel.GetProcessList();
+        auto process = SearchProcessList(system.Kernel(),
+            list, [process_id](auto& p) { return p->GetProcessId() == process_id; });
 
         if (process.IsNull()) {
             IPC::ResponseBuilder rb{ctx, 2};