Android #145

service: nfc: Validate mii data

.codespellrc

@@ -3,4 +3,4 @@
 
 [codespell]
 skip = ./.git,./build,./dist,./Doxyfile,./externals,./LICENSES,./src/android/app/src/main/res
-ignore-words-list = aci,allright,ba,canonicalizations,deques,froms,hda,inout,lod,masia,nam,nax,nd,optin,pullrequests,pullrequest,te,transfered,unstall,uscaled,vas,zink
+ignore-words-list = aci,allright,ba,canonicalizations,deques,froms,hda,inout,lod,masia,nam,nax,nce,nd,optin,pullrequests,pullrequest,te,transfered,unstall,uscaled,vas,zink

.gitmodules

@@ -4,9 +4,6 @@
 [submodule "enet"]
 	path = externals/enet
 	url = https://github.com/lsalzman/enet.git
-[submodule "inih"]
-	path = externals/inih/inih
-	url = https://github.com/benhoyt/inih.git
 [submodule "cubeb"]
 	path = externals/cubeb
 	url = https://github.com/mozilla/cubeb.git
@@ -61,3 +58,9 @@
 [submodule "breakpad"]
 	path = externals/breakpad
 	url = https://github.com/yuzu-emu/breakpad.git
+[submodule "simpleini"]
+	path = externals/simpleini
+	url = https://github.com/brofield/simpleini.git
+[submodule "oaknut"]
+	path = externals/oaknut
+	url = https://github.com/merryhime/oaknut

CMakeLists.txt

@@ -260,6 +260,11 @@ if (UNIX)
     add_definitions(-DYUZU_UNIX=1)
 endif()
 
+if (ARCHITECTURE_arm64 AND (ANDROID OR ${CMAKE_SYSTEM_NAME} STREQUAL "Linux"))
+    set(HAS_NCE 1)
+    add_definitions(-DHAS_NCE=1)
+endif()
+
 # Configure C++ standard
 # ===========================
 
@@ -285,12 +290,12 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
 find_package(Boost 1.79.0 REQUIRED context)
 find_package(enet 1.3 MODULE)
 find_package(fmt 9 REQUIRED)
-find_package(inih 52 MODULE COMPONENTS INIReader)
 find_package(LLVM 17.0.2 MODULE COMPONENTS Demangle)
 find_package(lz4 REQUIRED)
 find_package(nlohmann_json 3.8 REQUIRED)
 find_package(Opus 1.3 MODULE)
 find_package(RenderDoc MODULE)
+find_package(SimpleIni MODULE)
 find_package(stb MODULE)
 find_package(VulkanMemoryAllocator CONFIG)
 find_package(ZLIB 1.2 REQUIRED)

CMakeModules/FindSimpleIni.cmake

@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2023 Alexandre Bouvier <contact@amb.tf>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+find_path(SimpleIni_INCLUDE_DIR SimpleIni.h)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(SimpleIni
+    REQUIRED_VARS SimpleIni_INCLUDE_DIR
+)
+
+if (SimpleIni_FOUND AND NOT TARGET SimpleIni::SimpleIni)
+    add_library(SimpleIni::SimpleIni INTERFACE IMPORTED)
+    set_target_properties(SimpleIni::SimpleIni PROPERTIES
+        INTERFACE_INCLUDE_DIRECTORIES "${SimpleIni_INCLUDE_DIR}"
+    )
+endif()
+
+mark_as_advanced(SimpleIni_INCLUDE_DIR)

CMakeModules/Findinih.cmake

@@ -1,27 +0,0 @@
-# SPDX-FileCopyrightText: 2022 Alexandre Bouvier <contact@amb.tf>
-#
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-find_package(PkgConfig QUIET)
-pkg_search_module(INIH QUIET IMPORTED_TARGET inih)
-if (INIReader IN_LIST inih_FIND_COMPONENTS)
-    pkg_search_module(INIREADER QUIET IMPORTED_TARGET INIReader)
-    if (INIREADER_FOUND)
-        set(inih_INIReader_FOUND TRUE)
-    endif()
-endif()
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(inih
-    REQUIRED_VARS INIH_LINK_LIBRARIES
-    VERSION_VAR INIH_VERSION
-    HANDLE_COMPONENTS
-)
-
-if (inih_FOUND AND NOT TARGET inih::inih)
-    add_library(inih::inih ALIAS PkgConfig::INIH)
-endif()
-
-if (inih_FOUND AND inih_INIReader_FOUND AND NOT TARGET inih::INIReader)
-    add_library(inih::INIReader ALIAS PkgConfig::INIREADER)
-endif()

README.md

@@ -1,3 +1,13 @@
+| Pull Request | Commit | Title | Author | Merged? |
+|----|----|----|----|----|
+| [12074](https://github.com/yuzu-emu/yuzu//pull/12074) | [`340548aba`](https://github.com/yuzu-emu/yuzu//pull/12074/files) | Implement Native Code Execution (NCE) | [GPUCode](https://github.com/GPUCode/) | Yes |
+| [12204](https://github.com/yuzu-emu/yuzu//pull/12204) | [`7dddf5cb3`](https://github.com/yuzu-emu/yuzu//pull/12204/files) | android: Multi directory UI | [t895](https://github.com/t895/) | Yes |
+
+
+End of merge log. You can find the original README.md below the break.
+
+-----
+
 <!--
 SPDX-FileCopyrightText: 2018 yuzu Emulator Project
 SPDX-License-Identifier: GPL-2.0-or-later

dist/languages/.tx/config

@@ -6,3 +6,8 @@ file_filter = <lang>.ts
 source_file = en.ts
 source_lang = en
 type = QT
+
+[o:yuzu-emulator:p:yuzu:r:yuzu-android]
+file_filter = ../../src/android/app/src/main/res/values-<lang>/strings.xml
+source_file = ../../src/android/app/src/main/res/values/strings.xml
+type = ANDROID

externals/CMakeLists.txt

@@ -20,6 +20,10 @@ if ((ARCHITECTURE_x86 OR ARCHITECTURE_x86_64) AND NOT TARGET xbyak::xbyak)
 endif()
 
 # Dynarmic
+if (ARCHITECTURE_arm64 AND NOT TARGET merry::oaknut)
+    add_subdirectory(oaknut)
+endif()
+
 if ((ARCHITECTURE_x86_64 OR ARCHITECTURE_arm64) AND NOT TARGET dynarmic::dynarmic)
     set(DYNARMIC_IGNORE_ASSERTS ON)
     add_subdirectory(dynarmic)
@@ -34,11 +38,6 @@ endif()
 # Glad
 add_subdirectory(glad)
 
-# inih
-if (NOT TARGET inih::INIReader)
-    add_subdirectory(inih)
-endif()
-
 # mbedtls
 add_subdirectory(mbedtls)
 target_include_directories(mbedtls PUBLIC ./mbedtls/include)
@@ -295,3 +294,8 @@ if (YUZU_CRASH_DUMPS AND NOT TARGET libbreakpad_client)
         target_link_libraries(dump_syms PRIVATE libbreakpad_client ZLIB::ZLIB)
     endif()
 endif()
+
+# SimpleIni
+if (NOT TARGET SimpleIni::SimpleIni)
+    add_subdirectory(simpleini)
+endif()

externals/inih/CMakeLists.txt

@@ -1,13 +0,0 @@
-# SPDX-FileCopyrightText: 2014 Gui Andrade <admin@archshift.com>
-# SPDX-License-Identifier: GPL-2.0-or-later
-
-add_library(inih
-    inih/ini.c
-    inih/ini.h
-    inih/cpp/INIReader.cpp
-    inih/cpp/INIReader.h
-)
-
-create_target_directory_groups(inih)
-target_include_directories(inih INTERFACE inih/cpp)
-add_library(inih::INIReader ALIAS inih)

src/CMakeLists.txt

@@ -187,6 +187,7 @@ add_subdirectory(audio_core)
 add_subdirectory(video_core)
 add_subdirectory(network)
 add_subdirectory(input_common)
+add_subdirectory(frontend_common)
 add_subdirectory(shader_recompiler)
 
 if (YUZU_ROOM)

src/android/app/build.gradle.kts

@@ -219,7 +219,6 @@ dependencies {
     implementation("io.coil-kt:coil:2.2.2")
     implementation("androidx.core:core-splashscreen:1.0.1")
     implementation("androidx.window:window:1.2.0-beta03")
-    implementation("org.ini4j:ini4j:0.5.4")
     implementation("androidx.constraintlayout:constraintlayout:2.1.4")
     implementation("androidx.swiperefreshlayout:swiperefreshlayout:1.1.0")
     implementation("androidx.navigation:navigation-fragment-ktx:2.7.4")

src/android/app/src/main/java/org/yuzu/yuzu_emu/NativeLibrary.kt

@@ -230,8 +230,6 @@ object NativeLibrary {
      */
     external fun onTouchReleased(finger_id: Int)
 
-    external fun reloadSettings()
-
     external fun initGameIni(gameID: String?)
 
     external fun setAppDirectory(directory: String)
@@ -301,6 +299,11 @@ object NativeLibrary {
      */
     external fun getPerfStats(): DoubleArray
 
+    /**
+     * Returns the current CPU backend.
+     */
+    external fun getCpuBackend(): String
+
     /**
      * Notifies the core emulation that the orientation has changed.
      */

src/android/app/src/main/java/org/yuzu/yuzu_emu/adapters/FolderAdapter.kt

@@ -0,0 +1,76 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.adapters
+
+import android.net.Uri
+import android.text.TextUtils
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.fragment.app.FragmentActivity
+import androidx.recyclerview.widget.AsyncDifferConfig
+import androidx.recyclerview.widget.DiffUtil
+import androidx.recyclerview.widget.ListAdapter
+import androidx.recyclerview.widget.RecyclerView
+import org.yuzu.yuzu_emu.databinding.CardFolderBinding
+import org.yuzu.yuzu_emu.fragments.GameFolderPropertiesDialogFragment
+import org.yuzu.yuzu_emu.model.GameDir
+import org.yuzu.yuzu_emu.model.GamesViewModel
+
+class FolderAdapter(val activity: FragmentActivity, val gamesViewModel: GamesViewModel) :
+    ListAdapter<GameDir, FolderAdapter.FolderViewHolder>(
+        AsyncDifferConfig.Builder(DiffCallback()).build()
+    ) {
+    override fun onCreateViewHolder(
+        parent: ViewGroup,
+        viewType: Int
+    ): FolderAdapter.FolderViewHolder {
+        CardFolderBinding.inflate(LayoutInflater.from(parent.context), parent, false)
+            .also { return FolderViewHolder(it) }
+    }
+
+    override fun onBindViewHolder(holder: FolderAdapter.FolderViewHolder, position: Int) =
+        holder.bind(currentList[position])
+
+    inner class FolderViewHolder(val binding: CardFolderBinding) :
+        RecyclerView.ViewHolder(binding.root) {
+        private lateinit var gameDir: GameDir
+
+        fun bind(gameDir: GameDir) {
+            this.gameDir = gameDir
+
+            binding.apply {
+                path.text = Uri.parse(gameDir.uriString).path
+                path.postDelayed(
+                    {
+                        path.isSelected = true
+                        path.ellipsize = TextUtils.TruncateAt.MARQUEE
+                    },
+                    3000
+                )
+
+                buttonEdit.setOnClickListener {
+                    GameFolderPropertiesDialogFragment.newInstance(this@FolderViewHolder.gameDir)
+                        .show(
+                            activity.supportFragmentManager,
+                            GameFolderPropertiesDialogFragment.TAG
+                        )
+                }
+
+                buttonDelete.setOnClickListener {
+                    gamesViewModel.removeFolder(this@FolderViewHolder.gameDir)
+                }
+            }
+        }
+    }
+
+    private class DiffCallback : DiffUtil.ItemCallback<GameDir>() {
+        override fun areItemsTheSame(oldItem: GameDir, newItem: GameDir): Boolean {
+            return oldItem == newItem
+        }
+
+        override fun areContentsTheSame(oldItem: GameDir, newItem: GameDir): Boolean {
+            return oldItem == newItem
+        }
+    }
+}

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

@@ -10,6 +10,7 @@ enum class IntSetting(
     override val category: Settings.Category,
     override val androidDefault: Int? = null
 ) : AbstractIntSetting {
+    CPU_BACKEND("cpu_backend", Settings.Category.Cpu),
     CPU_ACCURACY("cpu_accuracy", Settings.Category.Cpu),
     REGION_INDEX("region_index", Settings.Category.System),
     LANGUAGE_INDEX("language_index", Settings.Category.System),

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

@@ -3,33 +3,9 @@
 
 package org.yuzu.yuzu_emu.features.settings.model
 
-import android.text.TextUtils
-import android.widget.Toast
 import org.yuzu.yuzu_emu.R
-import org.yuzu.yuzu_emu.YuzuApplication
-import org.yuzu.yuzu_emu.features.settings.utils.SettingsFile
 
 object Settings {
-    private val context get() = YuzuApplication.appContext
-
-    fun saveSettings(gameId: String = "") {
-        if (TextUtils.isEmpty(gameId)) {
-            Toast.makeText(
-                context,
-                context.getString(R.string.ini_saved),
-                Toast.LENGTH_SHORT
-            ).show()
-            SettingsFile.saveFile(SettingsFile.FILE_NAME_CONFIG)
-        } else {
-            // TODO: Save custom game settings
-            Toast.makeText(
-                context,
-                context.getString(R.string.gameid_saved, gameId),
-                Toast.LENGTH_SHORT
-            ).show()
-        }
-    }
-
     enum class Category {
         Android,
         Audio,

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

@@ -73,10 +73,19 @@ abstract class SettingsItem(
                     R.string.frame_limit_slider,
                     R.string.frame_limit_slider_description,
                     1,
-                    200,
+                    400,
                     "%"
                 )
             )
+            put(
+                SingleChoiceSetting(
+                    IntSetting.CPU_BACKEND,
+                    R.string.cpu_backend,
+                    0,
+                    R.array.cpuBackendArm64Names,
+                    R.array.cpuBackendArm64Values
+                )
+            )
             put(
                 SingleChoiceSetting(
                     IntSetting.CPU_ACCURACY,

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

@@ -19,13 +19,13 @@ import androidx.lifecycle.repeatOnLifecycle
 import androidx.navigation.fragment.NavHostFragment
 import androidx.navigation.navArgs
 import com.google.android.material.color.MaterialColors
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
-import org.yuzu.yuzu_emu.NativeLibrary
 import java.io.IOException
 import org.yuzu.yuzu_emu.R
 import org.yuzu.yuzu_emu.databinding.ActivitySettingsBinding
-import org.yuzu.yuzu_emu.features.settings.model.Settings
 import org.yuzu.yuzu_emu.features.settings.utils.SettingsFile
 import org.yuzu.yuzu_emu.fragments.ResetSettingsDialogFragment
 import org.yuzu.yuzu_emu.model.SettingsViewModel
@@ -54,10 +54,6 @@ class SettingsActivity : AppCompatActivity() {
 
         WindowCompat.setDecorFitsSystemWindows(window, false)
 
-        if (savedInstanceState != null) {
-            settingsViewModel.shouldSave = savedInstanceState.getBoolean(KEY_SHOULD_SAVE)
-        }
-
         if (InsetsHelper.getSystemGestureType(applicationContext) !=
             InsetsHelper.GESTURE_NAVIGATION
         ) {
@@ -128,12 +124,6 @@ class SettingsActivity : AppCompatActivity() {
         }
     }
 
-    override fun onSaveInstanceState(outState: Bundle) {
-        // Critical: If super method is not called, rotations will be busted.
-        super.onSaveInstanceState(outState)
-        outState.putBoolean(KEY_SHOULD_SAVE, settingsViewModel.shouldSave)
-    }
-
     override fun onStart() {
         super.onStart()
         // TODO: Load custom settings contextually
@@ -142,16 +132,10 @@ class SettingsActivity : AppCompatActivity() {
         }
     }
 
-    /**
-     * If this is called, the user has left the settings screen (potentially through the
-     * home button) and will expect their changes to be persisted. So we kick off an
-     * IntentService which will do so on a background thread.
-     */
     override fun onStop() {
         super.onStop()
-        if (isFinishing && settingsViewModel.shouldSave) {
-            Log.debug("[SettingsActivity] Settings activity stopping. Saving settings to INI...")
-            Settings.saveSettings()
+        CoroutineScope(Dispatchers.IO).launch {
+            NativeConfig.saveSettings()
         }
     }
 
@@ -161,15 +145,13 @@ class SettingsActivity : AppCompatActivity() {
     }
 
     fun onSettingsReset() {
-        // Prevents saving to a non-existent settings file
-        settingsViewModel.shouldSave = false
-
         // Delete settings file because the user may have changed values that do not exist in the UI
+        NativeConfig.unloadConfig()
         val settingsFile = SettingsFile.getSettingsFile(SettingsFile.FILE_NAME_CONFIG)
         if (!settingsFile.delete()) {
             throw IOException("Failed to delete $settingsFile")
         }
-        NativeLibrary.reloadSettings()
+        NativeConfig.initializeConfig()
 
         Toast.makeText(
             applicationContext,
@@ -194,8 +176,4 @@ class SettingsActivity : AppCompatActivity() {
             windowInsets
         }
     }
-
-    companion object {
-        private const val KEY_SHOULD_SAVE = "should_save"
-    }
 }

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

@@ -105,7 +105,6 @@ class SettingsAdapter(
     fun onBooleanClick(item: SwitchSetting, checked: Boolean) {
         item.checked = checked
         settingsViewModel.setShouldReloadSettingsList(true)
-        settingsViewModel.shouldSave = true
     }
 
     fun onSingleChoiceClick(item: SingleChoiceSetting, position: Int) {
@@ -161,7 +160,6 @@ class SettingsAdapter(
             epochTime += timePicker.hour.toLong() * 60 * 60
             epochTime += timePicker.minute.toLong() * 60
             if (item.value != epochTime) {
-                settingsViewModel.shouldSave = true
                 notifyItemChanged(position)
                 item.value = epochTime
             }

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

@@ -269,6 +269,7 @@ class SettingsFragmentPresenter(
             add(BooleanSetting.RENDERER_DEBUG.key)
 
             add(HeaderSetting(R.string.cpu))
+            add(IntSetting.CPU_BACKEND.key)
             add(IntSetting.CPU_ACCURACY.key)
             add(BooleanSetting.CPU_DEBUG_MODE.key)
             add(SettingsItem.FASTMEM_COMBINED)

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/utils/SettingsFile.kt

@@ -3,15 +3,8 @@
 
 package org.yuzu.yuzu_emu.features.settings.utils
 
-import android.widget.Toast
 import java.io.*
-import org.ini4j.Wini
-import org.yuzu.yuzu_emu.R
-import org.yuzu.yuzu_emu.YuzuApplication
-import org.yuzu.yuzu_emu.features.settings.model.*
 import org.yuzu.yuzu_emu.utils.DirectoryInitialization
-import org.yuzu.yuzu_emu.utils.Log
-import org.yuzu.yuzu_emu.utils.NativeConfig
 
 /**
  * Contains static methods for interacting with .ini files in which settings are stored.
@@ -19,41 +12,6 @@ import org.yuzu.yuzu_emu.utils.NativeConfig
 object SettingsFile {
     const val FILE_NAME_CONFIG = "config"
 
-    /**
-     * Saves a Settings HashMap to a given .ini file on disk. If unsuccessful, outputs an error
-     * telling why it failed.
-     *
-     * @param fileName The target filename without a path or extension.
-     */
-    fun saveFile(fileName: String) {
-        val ini = getSettingsFile(fileName)
-        try {
-            val wini = Wini(ini)
-            for (specificCategory in Settings.Category.values()) {
-                val categoryHeader = NativeConfig.getConfigHeader(specificCategory.ordinal)
-                for (setting in Settings.settingsList) {
-                    if (setting.key!!.isEmpty()) continue
-
-                    val settingCategoryHeader =
-                        NativeConfig.getConfigHeader(setting.category.ordinal)
-                    val iniSetting: String? = wini.get(categoryHeader, setting.key)
-                    if (iniSetting != null || settingCategoryHeader == categoryHeader) {
-                        wini.put(settingCategoryHeader, setting.key, setting.valueAsString)
-                    }
-                }
-            }
-            wini.store()
-        } catch (e: IOException) {
-            Log.error("[SettingsFile] File not found: " + fileName + ".ini: " + e.message)
-            val context = YuzuApplication.appContext
-            Toast.makeText(
-                context,
-                context.getString(R.string.error_saving, fileName, e.message),
-                Toast.LENGTH_SHORT
-            ).show()
-        }
-    }
-
     fun getSettingsFile(fileName: String): File =
         File(DirectoryInitialization.userDirectory + "/config/" + fileName + ".ini")
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/AddGameFolderDialogFragment.kt

@@ -0,0 +1,53 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.fragments
+
+import android.app.Dialog
+import android.content.DialogInterface
+import android.net.Uri
+import android.os.Bundle
+import androidx.fragment.app.DialogFragment
+import androidx.fragment.app.activityViewModels
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.yuzu.yuzu_emu.R
+import org.yuzu.yuzu_emu.databinding.DialogAddFolderBinding
+import org.yuzu.yuzu_emu.model.GameDir
+import org.yuzu.yuzu_emu.model.GamesViewModel
+
+class AddGameFolderDialogFragment : DialogFragment() {
+    private val gamesViewModel: GamesViewModel by activityViewModels()
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        val binding = DialogAddFolderBinding.inflate(layoutInflater)
+        val folderUriString = requireArguments().getString(FOLDER_URI_STRING)
+        if (folderUriString == null) {
+            dismiss()
+        }
+        binding.path.text = Uri.parse(folderUriString).path
+
+        return MaterialAlertDialogBuilder(requireContext())
+            .setTitle(R.string.add_game_folder)
+            .setPositiveButton(android.R.string.ok) { _: DialogInterface, _: Int ->
+                val newGameDir = GameDir(folderUriString!!, binding.deepScanSwitch.isChecked)
+                gamesViewModel.addFolder(newGameDir)
+            }
+            .setNegativeButton(android.R.string.cancel, null)
+            .setView(binding.root)
+            .show()
+    }
+
+    companion object {
+        const val TAG = "AddGameFolderDialogFragment"
+
+        private const val FOLDER_URI_STRING = "FolderUriString"
+
+        fun newInstance(folderUriString: String): AddGameFolderDialogFragment {
+            val args = Bundle()
+            args.putString(FOLDER_URI_STRING, folderUriString)
+            val fragment = AddGameFolderDialogFragment()
+            fragment.arguments = args
+            return fragment
+        }
+    }
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/EmulationFragment.kt

@@ -414,8 +414,10 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
             perfStatsUpdater = {
                 if (emulationViewModel.emulationStarted.value) {
                     val perfStats = NativeLibrary.getPerfStats()
+                    val cpuBackend = NativeLibrary.getCpuBackend()
                     if (_binding != null) {
-                        binding.showFpsText.text = String.format("FPS: %.1f", perfStats[FPS])
+                        binding.showFpsText.text =
+                            String.format("FPS: %.1f\n%s", perfStats[FPS], cpuBackend)
                     }
                     perfStatsUpdateHandler.postDelayed(perfStatsUpdater!!, 800)
                 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/GameFolderPropertiesDialogFragment.kt

@@ -0,0 +1,72 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.fragments
+
+import android.app.Dialog
+import android.content.DialogInterface
+import android.os.Bundle
+import androidx.fragment.app.DialogFragment
+import androidx.fragment.app.activityViewModels
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import org.yuzu.yuzu_emu.R
+import org.yuzu.yuzu_emu.databinding.DialogFolderPropertiesBinding
+import org.yuzu.yuzu_emu.model.GameDir
+import org.yuzu.yuzu_emu.model.GamesViewModel
+import org.yuzu.yuzu_emu.utils.SerializableHelper.parcelable
+
+class GameFolderPropertiesDialogFragment : DialogFragment() {
+    private val gamesViewModel: GamesViewModel by activityViewModels()
+
+    private var deepScan = false
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+        val binding = DialogFolderPropertiesBinding.inflate(layoutInflater)
+        val gameDir = requireArguments().parcelable<GameDir>(GAME_DIR)!!
+
+        // Restore checkbox state
+        binding.deepScanSwitch.isChecked =
+            savedInstanceState?.getBoolean(DEEP_SCAN) ?: gameDir.deepScan
+
+        // Ensure that we can get the checkbox state even if the view is destroyed
+        deepScan = binding.deepScanSwitch.isChecked
+        binding.deepScanSwitch.setOnClickListener {
+            deepScan = binding.deepScanSwitch.isChecked
+        }
+
+        return MaterialAlertDialogBuilder(requireContext())
+            .setView(binding.root)
+            .setTitle(R.string.game_folder_properties)
+            .setPositiveButton(android.R.string.ok) { _: DialogInterface, _: Int ->
+                val folderIndex = gamesViewModel.folders.value.indexOf(gameDir)
+                if (folderIndex != -1) {
+                    gamesViewModel.folders.value[folderIndex].deepScan =
+                        binding.deepScanSwitch.isChecked
+                    gamesViewModel.updateGameDirs()
+                }
+            }
+            .setNegativeButton(android.R.string.cancel, null)
+            .show()
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putBoolean(DEEP_SCAN, deepScan)
+    }
+
+    companion object {
+        const val TAG = "GameFolderPropertiesDialogFragment"
+
+        private const val GAME_DIR = "GameDir"
+
+        private const val DEEP_SCAN = "DeepScan"
+
+        fun newInstance(gameDir: GameDir): GameFolderPropertiesDialogFragment {
+            val args = Bundle()
+            args.putParcelable(GAME_DIR, gameDir)
+            val fragment = GameFolderPropertiesDialogFragment()
+            fragment.arguments = args
+            return fragment
+        }
+    }
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/GameFoldersFragment.kt

@@ -0,0 +1,128 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.fragments
+
+import android.content.Intent
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.updatePadding
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
+import androidx.navigation.findNavController
+import androidx.recyclerview.widget.GridLayoutManager
+import com.google.android.material.transition.MaterialSharedAxis
+import kotlinx.coroutines.launch
+import org.yuzu.yuzu_emu.R
+import org.yuzu.yuzu_emu.adapters.FolderAdapter
+import org.yuzu.yuzu_emu.databinding.FragmentFoldersBinding
+import org.yuzu.yuzu_emu.model.GamesViewModel
+import org.yuzu.yuzu_emu.model.HomeViewModel
+import org.yuzu.yuzu_emu.ui.main.MainActivity
+
+class GameFoldersFragment : Fragment() {
+    private var _binding: FragmentFoldersBinding? = null
+    private val binding get() = _binding!!
+
+    private val homeViewModel: HomeViewModel by activityViewModels()
+    private val gamesViewModel: GamesViewModel by activityViewModels()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enterTransition = MaterialSharedAxis(MaterialSharedAxis.X, true)
+        returnTransition = MaterialSharedAxis(MaterialSharedAxis.X, false)
+        reenterTransition = MaterialSharedAxis(MaterialSharedAxis.X, false)
+
+        gamesViewModel.onOpenGameFoldersFragment()
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentFoldersBinding.inflate(inflater)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        homeViewModel.setNavigationVisibility(visible = false, animated = true)
+        homeViewModel.setStatusBarShadeVisibility(visible = false)
+
+        binding.toolbarFolders.setNavigationOnClickListener {
+            binding.root.findNavController().popBackStack()
+        }
+
+        binding.listFolders.apply {
+            layoutManager = GridLayoutManager(
+                requireContext(),
+                resources.getInteger(R.integer.grid_columns)
+            )
+            adapter = FolderAdapter(requireActivity(), gamesViewModel)
+        }
+
+        viewLifecycleOwner.lifecycleScope.launch {
+            repeatOnLifecycle(Lifecycle.State.CREATED) {
+                gamesViewModel.folders.collect {
+                    (binding.listFolders.adapter as FolderAdapter).submitList(it)
+                }
+            }
+        }
+
+        val mainActivity = requireActivity() as MainActivity
+        binding.buttonAdd.setOnClickListener {
+            mainActivity.getGamesDirectory.launch(Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).data)
+        }
+
+        setInsets()
+    }
+
+    override fun onStop() {
+        super.onStop()
+        gamesViewModel.onCloseGameFoldersFragment()
+    }
+
+    private fun setInsets() =
+        ViewCompat.setOnApplyWindowInsetsListener(
+            binding.root
+        ) { _: View, windowInsets: WindowInsetsCompat ->
+            val barInsets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
+            val cutoutInsets = windowInsets.getInsets(WindowInsetsCompat.Type.displayCutout())
+
+            val leftInsets = barInsets.left + cutoutInsets.left
+            val rightInsets = barInsets.right + cutoutInsets.right
+
+            val mlpToolbar = binding.toolbarFolders.layoutParams as ViewGroup.MarginLayoutParams
+            mlpToolbar.leftMargin = leftInsets
+            mlpToolbar.rightMargin = rightInsets
+            binding.toolbarFolders.layoutParams = mlpToolbar
+
+            val fabSpacing = resources.getDimensionPixelSize(R.dimen.spacing_fab)
+            val mlpFab =
+                binding.buttonAdd.layoutParams as ViewGroup.MarginLayoutParams
+            mlpFab.leftMargin = leftInsets + fabSpacing
+            mlpFab.rightMargin = rightInsets + fabSpacing
+            mlpFab.bottomMargin = barInsets.bottom + fabSpacing
+            binding.buttonAdd.layoutParams = mlpFab
+
+            val mlpListFolders = binding.listFolders.layoutParams as ViewGroup.MarginLayoutParams
+            mlpListFolders.leftMargin = leftInsets
+            mlpListFolders.rightMargin = rightInsets
+            binding.listFolders.layoutParams = mlpListFolders
+
+            binding.listFolders.updatePadding(
+                bottom = barInsets.bottom +
+                    resources.getDimensionPixelSize(R.dimen.spacing_bottom_list_fab)
+            )
+
+            windowInsets
+        }
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/HomeSettingsFragment.kt

@@ -127,18 +127,13 @@ class HomeSettingsFragment : Fragment() {
             )
             add(
                 HomeSetting(
-                    R.string.select_games_folder,
+                    R.string.manage_game_folders,
                     R.string.select_games_folder_description,
                     R.drawable.ic_add,
                     {
-                        mainActivity.getGamesDirectory.launch(
-                            Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).data
-                        )
-                    },
-                    { true },
-                    0,
-                    0,
-                    homeViewModel.gamesDir
+                        binding.root.findNavController()
+                            .navigate(R.id.action_homeSettingsFragment_to_gameFoldersFragment)
+                    }
                 )
             )
             add(

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/InstallableFragment.kt

@@ -21,6 +21,8 @@ import org.yuzu.yuzu_emu.databinding.FragmentInstallablesBinding
 import org.yuzu.yuzu_emu.model.HomeViewModel
 import org.yuzu.yuzu_emu.model.Installable
 import org.yuzu.yuzu_emu.ui.main.MainActivity
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
 
 class InstallableFragment : Fragment() {
     private var _binding: FragmentInstallablesBinding? = null
@@ -78,7 +80,15 @@ class InstallableFragment : Fragment() {
                     R.string.manage_save_data,
                     R.string.import_export_saves_description,
                     install = { mainActivity.importSaves.launch(arrayOf("application/zip")) },
-                    export = { mainActivity.exportSave() }
+                    export = {
+                        mainActivity.exportSaves.launch(
+                            "yuzu saves - ${
+                            LocalDateTime.now().format(
+                                DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm")
+                            )
+                            }.zip"
+                        )
+                    }
                 )
             } else {
                 Installable(

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/SettingsDialogFragment.kt

@@ -52,7 +52,6 @@ class SettingsDialogFragment : DialogFragment(), DialogInterface.OnClickListener
                     .setPositiveButton(android.R.string.ok) { _: DialogInterface, _: Int ->
                         settingsViewModel.clickedItem!!.setting.reset()
                         settingsViewModel.setAdapterItemChanged(position)
-                        settingsViewModel.shouldSave = true
                     }
                     .setNegativeButton(android.R.string.cancel, null)
                     .create()
@@ -137,24 +136,17 @@ class SettingsDialogFragment : DialogFragment(), DialogInterface.OnClickListener
             is SingleChoiceSetting -> {
                 val scSetting = settingsViewModel.clickedItem as SingleChoiceSetting
                 val value = getValueForSingleChoiceSelection(scSetting, which)
-                if (scSetting.selectedValue != value) {
-                    settingsViewModel.shouldSave = true
-                }
                 scSetting.selectedValue = value
             }
 
             is StringSingleChoiceSetting -> {
                 val scSetting = settingsViewModel.clickedItem as StringSingleChoiceSetting
                 val value = scSetting.getValueAt(which)
-                if (scSetting.selectedValue != value) settingsViewModel.shouldSave = true
                 scSetting.selectedValue = value
             }
 
             is SliderSetting -> {
                 val sliderSetting = settingsViewModel.clickedItem as SliderSetting
-                if (sliderSetting.selectedValue != settingsViewModel.sliderProgress.value) {
-                    settingsViewModel.shouldSave = true
-                }
                 sliderSetting.selectedValue = settingsViewModel.sliderProgress.value
             }
         }

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/SetupFragment.kt

@@ -42,7 +42,7 @@ import org.yuzu.yuzu_emu.model.SetupPage
 import org.yuzu.yuzu_emu.model.StepState
 import org.yuzu.yuzu_emu.ui.main.MainActivity
 import org.yuzu.yuzu_emu.utils.DirectoryInitialization
-import org.yuzu.yuzu_emu.utils.GameHelper
+import org.yuzu.yuzu_emu.utils.NativeConfig
 import org.yuzu.yuzu_emu.utils.ViewUtils
 
 class SetupFragment : Fragment() {
@@ -184,11 +184,7 @@ class SetupFragment : Fragment() {
                     R.string.add_games_warning_description,
                     R.string.add_games_warning_help,
                     {
-                        val preferences =
-                            PreferenceManager.getDefaultSharedPreferences(
-                                YuzuApplication.appContext
-                            )
-                        if (preferences.getString(GameHelper.KEY_GAME_PATH, "")!!.isNotEmpty()) {
+                        if (NativeConfig.getGameDirs().isNotEmpty()) {
                             StepState.COMPLETE
                         } else {
                             StepState.INCOMPLETE

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/Game.kt

@@ -18,8 +18,8 @@ class Game(
     val version: String = "",
     val isHomebrew: Boolean = false
 ) : Parcelable {
-    val keyAddedToLibraryTime get() = "${programId}_AddedToLibraryTime"
-    val keyLastPlayedTime get() = "${programId}_LastPlayed"
+    val keyAddedToLibraryTime get() = "${path}_AddedToLibraryTime"
+    val keyLastPlayedTime get() = "${path}_LastPlayed"
 
     override fun equals(other: Any?): Boolean {
         if (other !is Game) {

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GameDir.kt

@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.yuzu.yuzu_emu.model
+
+import android.os.Parcelable
+import kotlinx.parcelize.Parcelize
+
+@Parcelize
+data class GameDir(
+    val uriString: String,
+    var deepScan: Boolean
+) : Parcelable

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GamesViewModel.kt

@@ -12,6 +12,7 @@ import java.util.Locale
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import kotlinx.serialization.decodeFromString
@@ -20,6 +21,7 @@ import org.yuzu.yuzu_emu.NativeLibrary
 import org.yuzu.yuzu_emu.YuzuApplication
 import org.yuzu.yuzu_emu.utils.GameHelper
 import org.yuzu.yuzu_emu.utils.GameMetadata
+import org.yuzu.yuzu_emu.utils.NativeConfig
 
 class GamesViewModel : ViewModel() {
     val games: StateFlow<List<Game>> get() = _games
@@ -40,6 +42,9 @@ class GamesViewModel : ViewModel() {
     val searchFocused: StateFlow<Boolean> get() = _searchFocused
     private val _searchFocused = MutableStateFlow(false)
 
+    private val _folders = MutableStateFlow(mutableListOf<GameDir>())
+    val folders = _folders.asStateFlow()
+
     init {
         // Ensure keys are loaded so that ROM metadata can be decrypted.
         NativeLibrary.reloadKeys()
@@ -50,6 +55,7 @@ class GamesViewModel : ViewModel() {
 
         viewModelScope.launch {
             withContext(Dispatchers.IO) {
+                getGameDirs()
                 if (storedGames!!.isNotEmpty()) {
                     val deserializedGames = mutableSetOf<Game>()
                     storedGames.forEach {
@@ -104,7 +110,7 @@ class GamesViewModel : ViewModel() {
         _searchFocused.value = searchFocused
     }
 
-    fun reloadGames(directoryChanged: Boolean) {
+    fun reloadGames(directoriesChanged: Boolean) {
         if (isReloading.value) {
             return
         }
@@ -116,10 +122,61 @@ class GamesViewModel : ViewModel() {
                 setGames(GameHelper.getGames())
                 _isReloading.value = false
 
-                if (directoryChanged) {
+                if (directoriesChanged) {
                     setShouldSwapData(true)
                 }
             }
         }
     }
+
+    fun addFolder(gameDir: GameDir) =
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                NativeConfig.addGameDir(gameDir)
+                getGameDirs()
+            }
+        }
+
+    fun removeFolder(gameDir: GameDir) =
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                val gameDirs = _folders.value.toMutableList()
+                val removedDirIndex = gameDirs.indexOf(gameDir)
+                if (removedDirIndex != -1) {
+                    gameDirs.removeAt(removedDirIndex)
+                    NativeConfig.setGameDirs(gameDirs.toTypedArray())
+                    getGameDirs()
+                }
+            }
+        }
+
+    fun updateGameDirs() =
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                NativeConfig.setGameDirs(_folders.value.toTypedArray())
+                getGameDirs()
+            }
+        }
+
+    fun onOpenGameFoldersFragment() =
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                getGameDirs()
+            }
+        }
+
+    fun onCloseGameFoldersFragment() =
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
+                getGameDirs(true)
+            }
+        }
+
+    private fun getGameDirs(reloadList: Boolean = false) {
+        val gameDirs = NativeConfig.getGameDirs()
+        _folders.value = gameDirs.toMutableList()
+        if (reloadList) {
+            reloadGames(true)
+        }
+    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/HomeViewModel.kt

@@ -3,15 +3,9 @@
 
 package org.yuzu.yuzu_emu.model
 
-import android.net.Uri
-import androidx.fragment.app.FragmentActivity
 import androidx.lifecycle.ViewModel
-import androidx.lifecycle.ViewModelProvider
-import androidx.preference.PreferenceManager
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
-import org.yuzu.yuzu_emu.YuzuApplication
-import org.yuzu.yuzu_emu.utils.GameHelper
 
 class HomeViewModel : ViewModel() {
     val navigationVisible: StateFlow<Pair<Boolean, Boolean>> get() = _navigationVisible
@@ -23,14 +17,6 @@ class HomeViewModel : ViewModel() {
     val shouldPageForward: StateFlow<Boolean> get() = _shouldPageForward
     private val _shouldPageForward = MutableStateFlow(false)
 
-    val gamesDir: StateFlow<String> get() = _gamesDir
-    private val _gamesDir = MutableStateFlow(
-        Uri.parse(
-            PreferenceManager.getDefaultSharedPreferences(YuzuApplication.appContext)
-                .getString(GameHelper.KEY_GAME_PATH, "")
-        ).path ?: ""
-    )
-
     var navigatedToSetup = false
 
     fun setNavigationVisibility(visible: Boolean, animated: Boolean) {
@@ -50,9 +36,4 @@ class HomeViewModel : ViewModel() {
     fun setShouldPageForward(pageForward: Boolean) {
         _shouldPageForward.value = pageForward
     }
-
-    fun setGamesDir(activity: FragmentActivity, dir: String) {
-        ViewModelProvider(activity)[GamesViewModel::class.java].reloadGames(true)
-        _gamesDir.value = dir
-    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/SettingsViewModel.kt

@@ -13,8 +13,6 @@ import org.yuzu.yuzu_emu.features.settings.model.view.SettingsItem
 class SettingsViewModel : ViewModel() {
     var game: Game? = null
 
-    var shouldSave = false
-
     var clickedItem: SettingsItem? = null
 
     val shouldRecreate: StateFlow<Boolean> get() = _shouldRecreate
@@ -73,6 +71,5 @@ class SettingsViewModel : ViewModel() {
 
     fun clear() {
         game = null
-        shouldSave = false
     }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/main/MainActivity.kt

@@ -6,7 +6,6 @@ package org.yuzu.yuzu_emu.ui.main
 import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
-import android.provider.DocumentsContract
 import android.view.View
 import android.view.ViewGroup.MarginLayoutParams
 import android.view.WindowManager
@@ -20,7 +19,6 @@ import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowCompat
 import androidx.core.view.WindowInsetsCompat
-import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.lifecycleScope
 import androidx.lifecycle.repeatOnLifecycle
@@ -41,8 +39,8 @@ import org.yuzu.yuzu_emu.NativeLibrary
 import org.yuzu.yuzu_emu.R
 import org.yuzu.yuzu_emu.activities.EmulationActivity
 import org.yuzu.yuzu_emu.databinding.ActivityMainBinding
-import org.yuzu.yuzu_emu.features.DocumentProvider
 import org.yuzu.yuzu_emu.features.settings.model.Settings
+import org.yuzu.yuzu_emu.fragments.AddGameFolderDialogFragment
 import org.yuzu.yuzu_emu.fragments.IndeterminateProgressDialogFragment
 import org.yuzu.yuzu_emu.fragments.MessageDialogFragment
 import org.yuzu.yuzu_emu.getPublicFilesDir
@@ -53,9 +51,6 @@ import org.yuzu.yuzu_emu.model.TaskViewModel
 import org.yuzu.yuzu_emu.utils.*
 import java.io.BufferedInputStream
 import java.io.BufferedOutputStream
-import java.io.FileOutputStream
-import java.time.LocalDateTime
-import java.time.format.DateTimeFormatter
 import java.util.zip.ZipEntry
 import java.util.zip.ZipInputStream
 
@@ -73,7 +68,6 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
 
     // Get first subfolder in saves folder (should be the user folder)
     val savesFolderRoot get() = File(savesFolder).listFiles()?.firstOrNull()?.canonicalPath ?: ""
-    private var lastZipCreated: File? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         val splashScreen = installSplashScreen()
@@ -259,6 +253,13 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
         super.onResume()
     }
 
+    override fun onStop() {
+        super.onStop()
+        CoroutineScope(Dispatchers.IO).launch {
+            NativeConfig.saveSettings()
+        }
+    }
+
     override fun onDestroy() {
         EmulationActivity.stopForegroundService(this)
         super.onDestroy()
@@ -300,20 +301,19 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
             Intent.FLAG_GRANT_READ_URI_PERMISSION
         )
 
-        // When a new directory is picked, we currently will reset the existing games
-        // database. This effectively means that only one game directory is supported.
-        PreferenceManager.getDefaultSharedPreferences(applicationContext).edit()
-            .putString(GameHelper.KEY_GAME_PATH, result.toString())
-            .apply()
+        val uriString = result.toString()
+        val folder = gamesViewModel.folders.value.firstOrNull { it.uriString == uriString }
+        if (folder != null) {
+            Toast.makeText(
+                applicationContext,
+                R.string.folder_already_added,
+                Toast.LENGTH_SHORT
+            ).show()
+            return
+        }
 
-        Toast.makeText(
-            applicationContext,
-            R.string.games_dir_selected,
-            Toast.LENGTH_LONG
-        ).show()
-
-        gamesViewModel.reloadGames(true)
-        homeViewModel.setGamesDir(this, result.path!!)
+        AddGameFolderDialogFragment.newInstance(uriString)
+            .show(supportFragmentManager, AddGameFolderDialogFragment.TAG)
     }
 
     val getProdKey =
@@ -632,6 +632,7 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
                 }
 
                 // Clear existing user data
+                NativeConfig.unloadConfig()
                 File(DirectoryInitialization.userDirectory!!).deleteRecursively()
 
                 // Copy archive to internal storage
@@ -650,81 +651,38 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
 
                 // Reinitialize relevant data
                 NativeLibrary.initializeSystem(true)
+                NativeConfig.initializeConfig()
                 gamesViewModel.reloadGames(false)
 
                 return@newInstance getString(R.string.user_data_import_success)
             }.show(supportFragmentManager, IndeterminateProgressDialogFragment.TAG)
         }
 
-    /**
-     * Zips the save files located in the given folder path and creates a new zip file with the current date and time.
-     * @return true if the zip file is successfully created, false otherwise.
-     */
-    private fun zipSave(): Boolean {
-        try {
-            val tempFolder = File(getPublicFilesDir().canonicalPath, "temp")
-            tempFolder.mkdirs()
-            val saveFolder = File(savesFolderRoot)
-            val outputZipFile = File(
-                tempFolder,
-                "yuzu saves - ${
-                LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"))
-                }.zip"
-            )
-            outputZipFile.createNewFile()
-            val result = FileUtil.zipFromInternalStorage(
-                saveFolder,
-                savesFolderRoot,
-                BufferedOutputStream(FileOutputStream(outputZipFile))
-            )
-            if (result == TaskState.Failed) {
-                return false
-            }
-            lastZipCreated = outputZipFile
-        } catch (e: Exception) {
-            return false
-        }
-        return true
-    }
-
     /**
      * Exports the save file located in the given folder path by creating a zip file and sharing it via intent.
      */
-    fun exportSave() {
-        CoroutineScope(Dispatchers.IO).launch {
-            val wasZipCreated = zipSave()
-            val lastZipFile = lastZipCreated
-            if (!wasZipCreated || lastZipFile == null) {
-                withContext(Dispatchers.Main) {
-                    Toast.makeText(
-                        this@MainActivity,
-                        getString(R.string.export_save_failed),
-                        Toast.LENGTH_LONG
-                    ).show()
-                }
-                return@launch
-            }
-
-            withContext(Dispatchers.Main) {
-                val file = DocumentFile.fromSingleUri(
-                    this@MainActivity,
-                    DocumentsContract.buildDocumentUri(
-                        DocumentProvider.AUTHORITY,
-                        "${DocumentProvider.ROOT_ID}/temp/${lastZipFile.name}"
-                    )
-                )!!
-                val intent = Intent(Intent.ACTION_SEND)
-                    .setDataAndType(file.uri, "application/zip")
-                    .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                    .putExtra(Intent.EXTRA_STREAM, file.uri)
-                startForResultExportSave.launch(
-                    Intent.createChooser(
-                        intent,
-                        getString(R.string.share_save_file)
-                    )
-                )
-            }
+    val exportSaves = registerForActivityResult(
+        ActivityResultContracts.CreateDocument("application/zip")
+    ) { result ->
+        if (result == null) {
+            return@registerForActivityResult
         }
+
+        IndeterminateProgressDialogFragment.newInstance(
+            this,
+            R.string.save_files_exporting,
+            false
+        ) {
+            val zipResult = FileUtil.zipFromInternalStorage(
+                File(savesFolderRoot),
+                savesFolderRoot,
+                BufferedOutputStream(contentResolver.openOutputStream(result))
+            )
+            return@newInstance when (zipResult) {
+                TaskState.Completed -> getString(R.string.export_success)
+                TaskState.Cancelled, TaskState.Failed -> getString(R.string.export_failed)
+            }
+        }.show(supportFragmentManager, IndeterminateProgressDialogFragment.TAG)
     }
 
     private val startForResultExportSave =

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/DirectoryInitialization.kt

@@ -16,6 +16,7 @@ object DirectoryInitialization {
         if (!areDirectoriesReady) {
             initializeInternalStorage()
             NativeLibrary.initializeSystem(false)
+            NativeConfig.initializeConfig()
             areDirectoriesReady = true
         }
     }

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/FileUtil.kt

@@ -364,6 +364,27 @@ object FileUtil {
             .lowercase()
     }
 
+    fun isTreeUriValid(uri: Uri): Boolean {
+        val resolver = context.contentResolver
+        val columns = arrayOf(
+            DocumentsContract.Document.COLUMN_DOCUMENT_ID,
+            DocumentsContract.Document.COLUMN_DISPLAY_NAME,
+            DocumentsContract.Document.COLUMN_MIME_TYPE
+        )
+        return try {
+            val docId: String = if (isRootTreeUri(uri)) {
+                DocumentsContract.getTreeDocumentId(uri)
+            } else {
+                DocumentsContract.getDocumentId(uri)
+            }
+            val childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(uri, docId)
+            resolver.query(childrenUri, columns, null, null, null)
+            true
+        } catch (_: Exception) {
+            false
+        }
+    }
+
     @Throws(IOException::class)
     fun getStringFromFile(file: File): String =
         String(file.readBytes(), StandardCharsets.UTF_8)

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/GameHelper.kt

@@ -11,10 +11,11 @@ import kotlinx.serialization.json.Json
 import org.yuzu.yuzu_emu.NativeLibrary
 import org.yuzu.yuzu_emu.YuzuApplication
 import org.yuzu.yuzu_emu.model.Game
+import org.yuzu.yuzu_emu.model.GameDir
 import org.yuzu.yuzu_emu.model.MinimalDocumentFile
 
 object GameHelper {
-    const val KEY_GAME_PATH = "game_path"
+    private const val KEY_OLD_GAME_PATH = "game_path"
     const val KEY_GAMES = "Games"
 
     private lateinit var preferences: SharedPreferences
@@ -22,15 +23,43 @@ object GameHelper {
     fun getGames(): List<Game> {
         val games = mutableListOf<Game>()
         val context = YuzuApplication.appContext
-        val gamesDir =
-            PreferenceManager.getDefaultSharedPreferences(context).getString(KEY_GAME_PATH, "")
-        val gamesUri = Uri.parse(gamesDir)
         preferences = PreferenceManager.getDefaultSharedPreferences(context)
 
+        val gameDirs = mutableListOf<GameDir>()
+        val oldGamesDir = preferences.getString(KEY_OLD_GAME_PATH, "") ?: ""
+        if (oldGamesDir.isNotEmpty()) {
+            gameDirs.add(GameDir(oldGamesDir, true))
+            preferences.edit().remove(KEY_OLD_GAME_PATH).apply()
+        }
+        gameDirs.addAll(NativeConfig.getGameDirs())
+
         // Ensure keys are loaded so that ROM metadata can be decrypted.
         NativeLibrary.reloadKeys()
 
-        addGamesRecursive(games, FileUtil.listFiles(gamesUri), 3)
+        val badDirs = mutableListOf<Int>()
+        gameDirs.forEachIndexed { index: Int, gameDir: GameDir ->
+            val gameDirUri = Uri.parse(gameDir.uriString)
+            val isValid = FileUtil.isTreeUriValid(gameDirUri)
+            if (isValid) {
+                addGamesRecursive(
+                    games,
+                    FileUtil.listFiles(gameDirUri),
+                    if (gameDir.deepScan) 3 else 1
+                )
+            } else {
+                badDirs.add(index)
+            }
+        }
+
+        // Remove all game dirs with insufficient permissions from config
+        if (badDirs.isNotEmpty()) {
+            var offset = 0
+            badDirs.forEach {
+                gameDirs.removeAt(it - offset)
+                offset++
+            }
+        }
+        NativeConfig.setGameDirs(gameDirs.toTypedArray())
 
         // Cache list of games found on disk
         val serializedGames = mutableSetOf<String>()

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/InputHandler.kt

@@ -27,6 +27,8 @@ object InputHandler {
             0x054C -> getInputDS5ButtonKey(event.keyCode)
             0x057E -> getInputJoyconButtonKey(event.keyCode)
             0x1532 -> getInputRazerButtonKey(event.keyCode)
+            0x3537 -> getInputRedmagicButtonKey(event.keyCode)
+            0x358A -> getInputBackboneLabsButtonKey(event.keyCode)
             else -> getInputGenericButtonKey(event.keyCode)
         }
 
@@ -227,6 +229,42 @@ object InputHandler {
         }
     }
 
+    private fun getInputRedmagicButtonKey(key: Int): Int {
+        return when (key) {
+            KeyEvent.KEYCODE_BUTTON_A -> NativeLibrary.ButtonType.BUTTON_B
+            KeyEvent.KEYCODE_BUTTON_B -> NativeLibrary.ButtonType.BUTTON_A
+            KeyEvent.KEYCODE_BUTTON_X -> NativeLibrary.ButtonType.BUTTON_Y
+            KeyEvent.KEYCODE_BUTTON_Y -> NativeLibrary.ButtonType.BUTTON_X
+            KeyEvent.KEYCODE_BUTTON_L1 -> NativeLibrary.ButtonType.TRIGGER_L
+            KeyEvent.KEYCODE_BUTTON_R1 -> NativeLibrary.ButtonType.TRIGGER_R
+            KeyEvent.KEYCODE_BUTTON_L2 -> NativeLibrary.ButtonType.TRIGGER_ZL
+            KeyEvent.KEYCODE_BUTTON_R2 -> NativeLibrary.ButtonType.TRIGGER_ZR
+            KeyEvent.KEYCODE_BUTTON_THUMBL -> NativeLibrary.ButtonType.STICK_L
+            KeyEvent.KEYCODE_BUTTON_THUMBR -> NativeLibrary.ButtonType.STICK_R
+            KeyEvent.KEYCODE_BUTTON_START -> NativeLibrary.ButtonType.BUTTON_PLUS
+            KeyEvent.KEYCODE_BUTTON_SELECT -> NativeLibrary.ButtonType.BUTTON_MINUS
+            else -> -1
+        }
+    }
+
+    private fun getInputBackboneLabsButtonKey(key: Int): Int {
+        return when (key) {
+            KeyEvent.KEYCODE_BUTTON_A -> NativeLibrary.ButtonType.BUTTON_B
+            KeyEvent.KEYCODE_BUTTON_B -> NativeLibrary.ButtonType.BUTTON_A
+            KeyEvent.KEYCODE_BUTTON_X -> NativeLibrary.ButtonType.BUTTON_Y
+            KeyEvent.KEYCODE_BUTTON_Y -> NativeLibrary.ButtonType.BUTTON_X
+            KeyEvent.KEYCODE_BUTTON_L1 -> NativeLibrary.ButtonType.TRIGGER_L
+            KeyEvent.KEYCODE_BUTTON_R1 -> NativeLibrary.ButtonType.TRIGGER_R
+            KeyEvent.KEYCODE_BUTTON_L2 -> NativeLibrary.ButtonType.TRIGGER_ZL
+            KeyEvent.KEYCODE_BUTTON_R2 -> NativeLibrary.ButtonType.TRIGGER_ZR
+            KeyEvent.KEYCODE_BUTTON_THUMBL -> NativeLibrary.ButtonType.STICK_L
+            KeyEvent.KEYCODE_BUTTON_THUMBR -> NativeLibrary.ButtonType.STICK_R
+            KeyEvent.KEYCODE_BUTTON_START -> NativeLibrary.ButtonType.BUTTON_PLUS
+            KeyEvent.KEYCODE_BUTTON_SELECT -> NativeLibrary.ButtonType.BUTTON_MINUS
+            else -> -1
+        }
+    }
+
     private fun getInputGenericButtonKey(key: Int): Int {
         return when (key) {
             KeyEvent.KEYCODE_BUTTON_A -> NativeLibrary.ButtonType.BUTTON_A

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/NativeConfig.kt

@@ -3,7 +3,33 @@
 
 package org.yuzu.yuzu_emu.utils
 
+import org.yuzu.yuzu_emu.model.GameDir
+
 object NativeConfig {
+    /**
+     * Creates a Config object and opens the emulation config.
+     */
+    @Synchronized
+    external fun initializeConfig()
+
+    /**
+     * Destroys the stored config object. This automatically saves the existing config.
+     */
+    @Synchronized
+    external fun unloadConfig()
+
+    /**
+     * Reads values saved to the config file and saves them.
+     */
+    @Synchronized
+    external fun reloadSettings()
+
+    /**
+     * Saves settings values in memory to disk.
+     */
+    @Synchronized
+    external fun saveSettings()
+
     external fun getBoolean(key: String, getDefault: Boolean): Boolean
     external fun setBoolean(key: String, value: Boolean)
 
@@ -30,4 +56,22 @@ object NativeConfig {
     external fun getConfigHeader(category: Int): String
 
     external fun getPairedSettingKey(key: String): String
+
+    /**
+     * Gets every [GameDir] in AndroidSettings::values.game_dirs
+     */
+    @Synchronized
+    external fun getGameDirs(): Array<GameDir>
+
+    /**
+     * Clears the AndroidSettings::values.game_dirs array and replaces them with the provided array
+     */
+    @Synchronized
+    external fun setGameDirs(dirs: Array<GameDir>)
+
+    /**
+     * Adds a single [GameDir] to the AndroidSettings::values.game_dirs array
+     */
+    @Synchronized
+    external fun addGameDir(dir: GameDir)
 }

src/android/app/src/main/jni/CMakeLists.txt

@@ -6,9 +6,6 @@ add_library(yuzu-android SHARED
     android_common/android_common.h
     applets/software_keyboard.cpp
     applets/software_keyboard.h
-    config.cpp
-    config.h
-    default_ini.h
     emu_window/emu_window.cpp
     emu_window/emu_window.h
     id_cache.cpp
@@ -16,15 +13,17 @@ add_library(yuzu-android SHARED
     native.cpp
     native.h
     native_config.cpp
-    uisettings.cpp
+    android_settings.cpp
     game_metadata.cpp
     native_log.cpp
+    android_config.cpp
+    android_config.h
 )
 
 set_property(TARGET yuzu-android PROPERTY IMPORTED_LOCATION ${FFmpeg_LIBRARY_DIR})
 
-target_link_libraries(yuzu-android PRIVATE audio_core common core input_common)
-target_link_libraries(yuzu-android PRIVATE android camera2ndk EGL glad inih jnigraphics log)
+target_link_libraries(yuzu-android PRIVATE audio_core common core input_common frontend_common)
+target_link_libraries(yuzu-android PRIVATE android camera2ndk EGL glad jnigraphics log)
 if (ARCHITECTURE_arm64)
     target_link_libraries(yuzu-android PRIVATE adrenotools)
 endif()

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

@@ -0,0 +1,120 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "android_config.h"
+#include "android_settings.h"
+#include "common/settings_setting.h"
+
+AndroidConfig::AndroidConfig(const std::string& config_name, ConfigType config_type)
+    : Config(config_type) {
+    Initialize(config_name);
+    if (config_type != ConfigType::InputProfile) {
+        ReadAndroidValues();
+        SaveAndroidValues();
+    }
+}
+
+AndroidConfig::~AndroidConfig() {
+    if (global) {
+        AndroidConfig::SaveAllValues();
+    }
+}
+
+void AndroidConfig::ReloadAllValues() {
+    Reload();
+    ReadAndroidValues();
+    SaveAndroidValues();
+}
+
+void AndroidConfig::SaveAllValues() {
+    Save();
+    SaveAndroidValues();
+}
+
+void AndroidConfig::ReadAndroidValues() {
+    if (global) {
+        ReadAndroidUIValues();
+        ReadUIValues();
+    }
+}
+
+void AndroidConfig::ReadAndroidUIValues() {
+    BeginGroup(Settings::TranslateCategory(Settings::Category::Android));
+
+    ReadCategory(Settings::Category::Android);
+
+    EndGroup();
+}
+
+void AndroidConfig::ReadUIValues() {
+    BeginGroup(Settings::TranslateCategory(Settings::Category::Ui));
+
+    ReadPathValues();
+
+    EndGroup();
+}
+
+void AndroidConfig::ReadPathValues() {
+    BeginGroup(Settings::TranslateCategory(Settings::Category::Paths));
+
+    const int gamedirs_size = BeginArray(std::string("gamedirs"));
+    for (int i = 0; i < gamedirs_size; ++i) {
+        SetArrayIndex(i);
+        AndroidSettings::GameDir game_dir;
+        game_dir.path = ReadStringSetting(std::string("path"));
+        game_dir.deep_scan =
+            ReadBooleanSetting(std::string("deep_scan"), std::make_optional(false));
+        AndroidSettings::values.game_dirs.push_back(game_dir);
+    }
+    EndArray();
+
+    EndGroup();
+}
+
+void AndroidConfig::SaveAndroidValues() {
+    if (global) {
+        SaveAndroidUIValues();
+        SaveUIValues();
+    }
+
+    WriteToIni();
+}
+
+void AndroidConfig::SaveAndroidUIValues() {
+    BeginGroup(Settings::TranslateCategory(Settings::Category::Android));
+
+    WriteCategory(Settings::Category::Android);
+
+    EndGroup();
+}
+
+void AndroidConfig::SaveUIValues() {
+    BeginGroup(Settings::TranslateCategory(Settings::Category::Ui));
+
+    SavePathValues();
+
+    EndGroup();
+}
+
+void AndroidConfig::SavePathValues() {
+    BeginGroup(Settings::TranslateCategory(Settings::Category::Paths));
+
+    BeginArray(std::string("gamedirs"));
+    for (size_t i = 0; i < AndroidSettings::values.game_dirs.size(); ++i) {
+        SetArrayIndex(i);
+        const auto& game_dir = AndroidSettings::values.game_dirs[i];
+        WriteSetting(std::string("path"), game_dir.path);
+        WriteSetting(std::string("deep_scan"), game_dir.deep_scan, std::make_optional(false));
+    }
+    EndArray();
+
+    EndGroup();
+}
+
+std::vector<Settings::BasicSetting*>& AndroidConfig::FindRelevantList(Settings::Category category) {
+    auto& map = Settings::values.linkage.by_category;
+    if (map.contains(category)) {
+        return Settings::values.linkage.by_category[category];
+    }
+    return AndroidSettings::values.linkage.by_category[category];
+}

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

@@ -0,0 +1,41 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "frontend_common/config.h"
+
+class AndroidConfig final : public Config {
+public:
+    explicit AndroidConfig(const std::string& config_name = "config",
+                           ConfigType config_type = ConfigType::GlobalConfig);
+    ~AndroidConfig() override;
+
+    void ReloadAllValues() override;
+    void SaveAllValues() override;
+
+protected:
+    void ReadAndroidValues();
+    void ReadAndroidUIValues();
+    void ReadHidbusValues() override {}
+    void ReadDebugControlValues() override {}
+    void ReadPathValues() override;
+    void ReadShortcutValues() override {}
+    void ReadUIValues() override;
+    void ReadUIGamelistValues() override {}
+    void ReadUILayoutValues() override {}
+    void ReadMultiplayerValues() override {}
+
+    void SaveAndroidValues();
+    void SaveAndroidUIValues();
+    void SaveHidbusValues() override {}
+    void SaveDebugControlValues() override {}
+    void SavePathValues() override;
+    void SaveShortcutValues() override {}
+    void SaveUIValues() override;
+    void SaveUIGamelistValues() override {}
+    void SaveUILayoutValues() override {}
+    void SaveMultiplayerValues() override {}
+
+    std::vector<Settings::BasicSetting*>& FindRelevantList(Settings::Category category) override;
+};

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

@@ -1,7 +1,7 @@
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include "uisettings.h"
+#include "android_settings.h"
 
 namespace AndroidSettings {
 

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

@@ -9,9 +9,17 @@
 
 namespace AndroidSettings {
 
+struct GameDir {
+    std::string path;
+    bool deep_scan = false;
+};
+
 struct Values {
     Settings::Linkage linkage;
 
+    // Path settings
+    std::vector<GameDir> game_dirs;
+
     // Android
     Settings::Setting<bool> picture_in_picture{linkage, false, "picture_in_picture",
                                                Settings::Category::Android};

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

@@ -1,330 +0,0 @@
-// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <memory>
-#include <optional>
-#include <sstream>
-
-#include <INIReader.h>
-#include "common/fs/file.h"
-#include "common/fs/fs.h"
-#include "common/fs/path_util.h"
-#include "common/logging/log.h"
-#include "common/settings.h"
-#include "common/settings_enums.h"
-#include "core/hle/service/acc/profile_manager.h"
-#include "input_common/main.h"
-#include "jni/config.h"
-#include "jni/default_ini.h"
-#include "uisettings.h"
-
-namespace FS = Common::FS;
-
-Config::Config(const std::string& config_name, ConfigType config_type)
-    : type(config_type), global{config_type == ConfigType::GlobalConfig} {
-    Initialize(config_name);
-}
-
-Config::~Config() = default;
-
-bool Config::LoadINI(const std::string& default_contents, bool retry) {
-    void(FS::CreateParentDir(config_loc));
-    config = std::make_unique<INIReader>(FS::PathToUTF8String(config_loc));
-    const auto config_loc_str = FS::PathToUTF8String(config_loc);
-    if (config->ParseError() < 0) {
-        if (retry) {
-            LOG_WARNING(Config, "Failed to load {}. Creating file from defaults...",
-                        config_loc_str);
-
-            void(FS::CreateParentDir(config_loc));
-            void(FS::WriteStringToFile(config_loc, FS::FileType::TextFile, default_contents));
-
-            config = std::make_unique<INIReader>(config_loc_str);
-
-            return LoadINI(default_contents, false);
-        }
-        LOG_ERROR(Config, "Failed.");
-        return false;
-    }
-    LOG_INFO(Config, "Successfully loaded {}", config_loc_str);
-    return true;
-}
-
-template <>
-void Config::ReadSetting(const std::string& group, Settings::Setting<std::string>& setting) {
-    std::string setting_value = config->Get(group, setting.GetLabel(), setting.GetDefault());
-    if (setting_value.empty()) {
-        setting_value = setting.GetDefault();
-    }
-    setting = std::move(setting_value);
-}
-
-template <>
-void Config::ReadSetting(const std::string& group, Settings::Setting<bool>& setting) {
-    setting = config->GetBoolean(group, setting.GetLabel(), setting.GetDefault());
-}
-
-template <typename Type, bool ranged>
-void Config::ReadSetting(const std::string& group, Settings::Setting<Type, ranged>& setting) {
-    setting = static_cast<Type>(
-        config->GetInteger(group, setting.GetLabel(), static_cast<long>(setting.GetDefault())));
-}
-
-void Config::ReadValues() {
-    ReadSetting("ControlsGeneral", Settings::values.mouse_enabled);
-    ReadSetting("ControlsGeneral", Settings::values.touch_device);
-    ReadSetting("ControlsGeneral", Settings::values.keyboard_enabled);
-    ReadSetting("ControlsGeneral", Settings::values.debug_pad_enabled);
-    ReadSetting("ControlsGeneral", Settings::values.vibration_enabled);
-    ReadSetting("ControlsGeneral", Settings::values.enable_accurate_vibrations);
-    ReadSetting("ControlsGeneral", Settings::values.motion_enabled);
-    Settings::values.touchscreen.enabled =
-        config->GetBoolean("ControlsGeneral", "touch_enabled", true);
-    Settings::values.touchscreen.rotation_angle =
-        config->GetInteger("ControlsGeneral", "touch_angle", 0);
-    Settings::values.touchscreen.diameter_x =
-        config->GetInteger("ControlsGeneral", "touch_diameter_x", 15);
-    Settings::values.touchscreen.diameter_y =
-        config->GetInteger("ControlsGeneral", "touch_diameter_y", 15);
-
-    int num_touch_from_button_maps =
-        config->GetInteger("ControlsGeneral", "touch_from_button_map", 0);
-    if (num_touch_from_button_maps > 0) {
-        for (int i = 0; i < num_touch_from_button_maps; ++i) {
-            Settings::TouchFromButtonMap map;
-            map.name = config->Get("ControlsGeneral",
-                                   std::string("touch_from_button_maps_") + std::to_string(i) +
-                                       std::string("_name"),
-                                   "default");
-            const int num_touch_maps = config->GetInteger(
-                "ControlsGeneral",
-                std::string("touch_from_button_maps_") + std::to_string(i) + std::string("_count"),
-                0);
-            map.buttons.reserve(num_touch_maps);
-
-            for (int j = 0; j < num_touch_maps; ++j) {
-                std::string touch_mapping =
-                    config->Get("ControlsGeneral",
-                                std::string("touch_from_button_maps_") + std::to_string(i) +
-                                    std::string("_bind_") + std::to_string(j),
-                                "");
-                map.buttons.emplace_back(std::move(touch_mapping));
-            }
-
-            Settings::values.touch_from_button_maps.emplace_back(std::move(map));
-        }
-    } else {
-        Settings::values.touch_from_button_maps.emplace_back(
-            Settings::TouchFromButtonMap{"default", {}});
-        num_touch_from_button_maps = 1;
-    }
-    Settings::values.touch_from_button_map_index = std::clamp(
-        Settings::values.touch_from_button_map_index.GetValue(), 0, num_touch_from_button_maps - 1);
-
-    ReadSetting("ControlsGeneral", Settings::values.udp_input_servers);
-
-    // Data Storage
-    ReadSetting("Data Storage", Settings::values.use_virtual_sd);
-    FS::SetYuzuPath(FS::YuzuPath::NANDDir,
-                    config->Get("Data Storage", "nand_directory",
-                                FS::GetYuzuPathString(FS::YuzuPath::NANDDir)));
-    FS::SetYuzuPath(FS::YuzuPath::SDMCDir,
-                    config->Get("Data Storage", "sdmc_directory",
-                                FS::GetYuzuPathString(FS::YuzuPath::SDMCDir)));
-    FS::SetYuzuPath(FS::YuzuPath::LoadDir,
-                    config->Get("Data Storage", "load_directory",
-                                FS::GetYuzuPathString(FS::YuzuPath::LoadDir)));
-    FS::SetYuzuPath(FS::YuzuPath::DumpDir,
-                    config->Get("Data Storage", "dump_directory",
-                                FS::GetYuzuPathString(FS::YuzuPath::DumpDir)));
-    ReadSetting("Data Storage", Settings::values.gamecard_inserted);
-    ReadSetting("Data Storage", Settings::values.gamecard_current_game);
-    ReadSetting("Data Storage", Settings::values.gamecard_path);
-
-    // System
-    ReadSetting("System", Settings::values.current_user);
-    Settings::values.current_user = std::clamp<int>(Settings::values.current_user.GetValue(), 0,
-                                                    Service::Account::MAX_USERS - 1);
-
-    // Disable docked mode by default on Android
-    Settings::values.use_docked_mode.SetValue(config->GetBoolean("System", "use_docked_mode", false)
-                                                  ? Settings::ConsoleMode::Docked
-                                                  : Settings::ConsoleMode::Handheld);
-
-    const auto rng_seed_enabled = config->GetBoolean("System", "rng_seed_enabled", false);
-    if (rng_seed_enabled) {
-        Settings::values.rng_seed.SetValue(config->GetInteger("System", "rng_seed", 0));
-    } else {
-        Settings::values.rng_seed.SetValue(0);
-    }
-    Settings::values.rng_seed_enabled.SetValue(rng_seed_enabled);
-
-    const auto custom_rtc_enabled = config->GetBoolean("System", "custom_rtc_enabled", false);
-    if (custom_rtc_enabled) {
-        Settings::values.custom_rtc = config->GetInteger("System", "custom_rtc", 0);
-    } else {
-        Settings::values.custom_rtc = 0;
-    }
-    Settings::values.custom_rtc_enabled = custom_rtc_enabled;
-
-    ReadSetting("System", Settings::values.language_index);
-    ReadSetting("System", Settings::values.region_index);
-    ReadSetting("System", Settings::values.time_zone_index);
-    ReadSetting("System", Settings::values.sound_index);
-
-    // Core
-    ReadSetting("Core", Settings::values.use_multi_core);
-    ReadSetting("Core", Settings::values.memory_layout_mode);
-
-    // Cpu
-    ReadSetting("Cpu", Settings::values.cpu_accuracy);
-    ReadSetting("Cpu", Settings::values.cpu_debug_mode);
-    ReadSetting("Cpu", Settings::values.cpuopt_page_tables);
-    ReadSetting("Cpu", Settings::values.cpuopt_block_linking);
-    ReadSetting("Cpu", Settings::values.cpuopt_return_stack_buffer);
-    ReadSetting("Cpu", Settings::values.cpuopt_fast_dispatcher);
-    ReadSetting("Cpu", Settings::values.cpuopt_context_elimination);
-    ReadSetting("Cpu", Settings::values.cpuopt_const_prop);
-    ReadSetting("Cpu", Settings::values.cpuopt_misc_ir);
-    ReadSetting("Cpu", Settings::values.cpuopt_reduce_misalign_checks);
-    ReadSetting("Cpu", Settings::values.cpuopt_fastmem);
-    ReadSetting("Cpu", Settings::values.cpuopt_fastmem_exclusives);
-    ReadSetting("Cpu", Settings::values.cpuopt_recompile_exclusives);
-    ReadSetting("Cpu", Settings::values.cpuopt_ignore_memory_aborts);
-    ReadSetting("Cpu", Settings::values.cpuopt_unsafe_unfuse_fma);
-    ReadSetting("Cpu", Settings::values.cpuopt_unsafe_reduce_fp_error);
-    ReadSetting("Cpu", Settings::values.cpuopt_unsafe_ignore_standard_fpcr);
-    ReadSetting("Cpu", Settings::values.cpuopt_unsafe_inaccurate_nan);
-    ReadSetting("Cpu", Settings::values.cpuopt_unsafe_fastmem_check);
-    ReadSetting("Cpu", Settings::values.cpuopt_unsafe_ignore_global_monitor);
-
-    // Renderer
-    ReadSetting("Renderer", Settings::values.renderer_backend);
-    ReadSetting("Renderer", Settings::values.renderer_debug);
-    ReadSetting("Renderer", Settings::values.renderer_shader_feedback);
-    ReadSetting("Renderer", Settings::values.enable_nsight_aftermath);
-    ReadSetting("Renderer", Settings::values.disable_shader_loop_safety_checks);
-    ReadSetting("Renderer", Settings::values.vulkan_device);
-
-    ReadSetting("Renderer", Settings::values.resolution_setup);
-    ReadSetting("Renderer", Settings::values.scaling_filter);
-    ReadSetting("Renderer", Settings::values.fsr_sharpening_slider);
-    ReadSetting("Renderer", Settings::values.anti_aliasing);
-    ReadSetting("Renderer", Settings::values.fullscreen_mode);
-    ReadSetting("Renderer", Settings::values.aspect_ratio);
-    ReadSetting("Renderer", Settings::values.max_anisotropy);
-    ReadSetting("Renderer", Settings::values.use_speed_limit);
-    ReadSetting("Renderer", Settings::values.speed_limit);
-    ReadSetting("Renderer", Settings::values.use_disk_shader_cache);
-    ReadSetting("Renderer", Settings::values.use_asynchronous_gpu_emulation);
-    ReadSetting("Renderer", Settings::values.vsync_mode);
-    ReadSetting("Renderer", Settings::values.shader_backend);
-    ReadSetting("Renderer", Settings::values.use_asynchronous_shaders);
-    ReadSetting("Renderer", Settings::values.nvdec_emulation);
-    ReadSetting("Renderer", Settings::values.use_fast_gpu_time);
-    ReadSetting("Renderer", Settings::values.use_vulkan_driver_pipeline_cache);
-
-    ReadSetting("Renderer", Settings::values.bg_red);
-    ReadSetting("Renderer", Settings::values.bg_green);
-    ReadSetting("Renderer", Settings::values.bg_blue);
-
-    // Use GPU accuracy normal by default on Android
-    Settings::values.gpu_accuracy = static_cast<Settings::GpuAccuracy>(config->GetInteger(
-        "Renderer", "gpu_accuracy", static_cast<u32>(Settings::GpuAccuracy::Normal)));
-
-    // Use GPU default anisotropic filtering on Android
-    Settings::values.max_anisotropy =
-        static_cast<Settings::AnisotropyMode>(config->GetInteger("Renderer", "max_anisotropy", 1));
-
-    // Disable ASTC compute by default on Android
-    Settings::values.accelerate_astc.SetValue(
-        config->GetBoolean("Renderer", "accelerate_astc", false) ? Settings::AstcDecodeMode::Gpu
-                                                                 : Settings::AstcDecodeMode::Cpu);
-
-    // Enable asynchronous presentation by default on Android
-    Settings::values.async_presentation =
-        config->GetBoolean("Renderer", "async_presentation", true);
-
-    // Disable force_max_clock by default on Android
-    Settings::values.renderer_force_max_clock =
-        config->GetBoolean("Renderer", "force_max_clock", false);
-
-    // Disable use_reactive_flushing by default on Android
-    Settings::values.use_reactive_flushing =
-        config->GetBoolean("Renderer", "use_reactive_flushing", false);
-
-    // Audio
-    ReadSetting("Audio", Settings::values.sink_id);
-    ReadSetting("Audio", Settings::values.audio_output_device_id);
-    ReadSetting("Audio", Settings::values.volume);
-
-    // Miscellaneous
-    // log_filter has a different default here than from common
-    Settings::values.log_filter = "*:Info";
-    ReadSetting("Miscellaneous", Settings::values.use_dev_keys);
-
-    // Debugging
-    Settings::values.record_frame_times =
-        config->GetBoolean("Debugging", "record_frame_times", false);
-    ReadSetting("Debugging", Settings::values.dump_exefs);
-    ReadSetting("Debugging", Settings::values.dump_nso);
-    ReadSetting("Debugging", Settings::values.enable_fs_access_log);
-    ReadSetting("Debugging", Settings::values.reporting_services);
-    ReadSetting("Debugging", Settings::values.quest_flag);
-    ReadSetting("Debugging", Settings::values.use_debug_asserts);
-    ReadSetting("Debugging", Settings::values.use_auto_stub);
-    ReadSetting("Debugging", Settings::values.disable_macro_jit);
-    ReadSetting("Debugging", Settings::values.disable_macro_hle);
-    ReadSetting("Debugging", Settings::values.use_gdbstub);
-    ReadSetting("Debugging", Settings::values.gdbstub_port);
-
-    const auto title_list = config->Get("AddOns", "title_ids", "");
-    std::stringstream ss(title_list);
-    std::string line;
-    while (std::getline(ss, line, '|')) {
-        const auto title_id = std::strtoul(line.c_str(), nullptr, 16);
-        const auto disabled_list = config->Get("AddOns", "disabled_" + line, "");
-
-        std::stringstream inner_ss(disabled_list);
-        std::string inner_line;
-        std::vector<std::string> out;
-        while (std::getline(inner_ss, inner_line, '|')) {
-            out.push_back(inner_line);
-        }
-
-        Settings::values.disabled_addons.insert_or_assign(title_id, out);
-    }
-
-    // Web Service
-    ReadSetting("WebService", Settings::values.enable_telemetry);
-    ReadSetting("WebService", Settings::values.web_api_url);
-    ReadSetting("WebService", Settings::values.yuzu_username);
-    ReadSetting("WebService", Settings::values.yuzu_token);
-
-    // Network
-    ReadSetting("Network", Settings::values.network_interface);
-
-    // Android
-    ReadSetting("Android", AndroidSettings::values.picture_in_picture);
-    ReadSetting("Android", AndroidSettings::values.screen_layout);
-}
-
-void Config::Initialize(const std::string& config_name) {
-    const auto fs_config_loc = FS::GetYuzuPath(FS::YuzuPath::ConfigDir);
-    const auto config_file = fmt::format("{}.ini", config_name);
-
-    switch (type) {
-    case ConfigType::GlobalConfig:
-        config_loc = FS::PathToUTF8String(fs_config_loc / config_file);
-        break;
-    case ConfigType::PerGameConfig:
-        config_loc = FS::PathToUTF8String(fs_config_loc / "custom" / FS::ToU8String(config_file));
-        break;
-    case ConfigType::InputProfile:
-        config_loc = FS::PathToUTF8String(fs_config_loc / "input" / config_file);
-        LoadINI(DefaultINI::android_config_file);
-        return;
-    }
-    LoadINI(DefaultINI::android_config_file);
-    ReadValues();
-}

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

@@ -1,47 +0,0 @@
-// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#include <filesystem>
-#include <memory>
-#include <optional>
-#include <string>
-
-#include "common/settings.h"
-
-class INIReader;
-
-class Config {
-    bool LoadINI(const std::string& default_contents = "", bool retry = true);
-
-public:
-    enum class ConfigType {
-        GlobalConfig,
-        PerGameConfig,
-        InputProfile,
-    };
-
-    explicit Config(const std::string& config_name = "config",
-                    ConfigType config_type = ConfigType::GlobalConfig);
-    ~Config();
-
-    void Initialize(const std::string& config_name);
-
-private:
-    /**
-     * Applies a value read from the config to a Setting.
-     *
-     * @param group The name of the INI group
-     * @param setting The yuzu setting to modify
-     */
-    template <typename Type, bool ranged>
-    void ReadSetting(const std::string& group, Settings::Setting<Type, ranged>& setting);
-
-    void ReadValues();
-
-    const ConfigType type;
-    std::unique_ptr<INIReader> config;
-    std::string config_loc;
-    const bool global;
-};

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

@@ -1,511 +0,0 @@
-// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-namespace DefaultINI {
-
-const char* android_config_file = R"(
-
-[ControlsP0]
-# The input devices and parameters for each Switch native input
-# The config section determines the player number where the config will be applied on. For example "ControlsP0", "ControlsP1", ...
-# It should be in the format of "engine:[engine_name],[param1]:[value1],[param2]:[value2]..."
-# Escape characters $0 (for ':'), $1 (for ',') and $2 (for '$') can be used in values
-
-# Indicates if this player should be connected at boot
-connected=
-
-# for button input, the following devices are available:
-#  - "keyboard" (default) for keyboard input. Required parameters:
-#      - "code": the code of the key to bind
-#  - "sdl" for joystick input using SDL. Required parameters:
-#      - "guid": SDL identification GUID of the joystick
-#      - "port": the index of the joystick to bind
-#      - "button"(optional): the index of the button to bind
-#      - "hat"(optional): the index of the hat to bind as direction buttons
-#      - "axis"(optional): the index of the axis to bind
-#      - "direction"(only used for hat): the direction name of the hat to bind. Can be "up", "down", "left" or "right"
-#      - "threshold"(only used for axis): a float value in (-1.0, 1.0) which the button is
-#          triggered if the axis value crosses
-#      - "direction"(only used for axis): "+" means the button is triggered when the axis value
-#          is greater than the threshold; "-" means the button is triggered when the axis value
-#          is smaller than the threshold
-button_a=
-button_b=
-button_x=
-button_y=
-button_lstick=
-button_rstick=
-button_l=
-button_r=
-button_zl=
-button_zr=
-button_plus=
-button_minus=
-button_dleft=
-button_dup=
-button_dright=
-button_ddown=
-button_lstick_left=
-button_lstick_up=
-button_lstick_right=
-button_lstick_down=
-button_sl=
-button_sr=
-button_home=
-button_screenshot=
-
-# for analog input, the following devices are available:
-#  - "analog_from_button" (default) for emulating analog input from direction buttons. Required parameters:
-#      - "up", "down", "left", "right": sub-devices for each direction.
-#          Should be in the format as a button input devices using escape characters, for example, "engine$0keyboard$1code$00"
-#      - "modifier": sub-devices as a modifier.
-#      - "modifier_scale": a float number representing the applied modifier scale to the analog input.
-#          Must be in range of 0.0-1.0. Defaults to 0.5
-#  - "sdl" for joystick input using SDL. Required parameters:
-#      - "guid": SDL identification GUID of the joystick
-#      - "port": the index of the joystick to bind
-#      - "axis_x": the index of the axis to bind as x-axis (default to 0)
-#      - "axis_y": the index of the axis to bind as y-axis (default to 1)
-lstick=
-rstick=
-
-# for motion input, the following devices are available:
-#  - "keyboard" (default) for emulating random motion input from buttons. Required parameters:
-#      - "code": the code of the key to bind
-#  - "sdl" for motion input using SDL. Required parameters:
-#      - "guid": SDL identification GUID of the joystick
-#      - "port": the index of the joystick to bind
-#      - "motion": the index of the motion sensor to bind
-#  - "cemuhookudp" for motion input using Cemu Hook protocol. Required parameters:
-#      - "guid": the IP address of the cemu hook server encoded to a hex string. for example 192.168.0.1 = "c0a80001"
-#      - "port": the port of the cemu hook server
-#      - "pad": the index of the joystick
-#      - "motion": the index of the motion sensor of the joystick to bind
-motionleft=
-motionright=
-
-[ControlsGeneral]
-# To use the debug_pad, prepend `debug_pad_` before each button setting above.
-# i.e. debug_pad_button_a=
-
-# Enable debug pad inputs to the guest
-# 0 (default): Disabled, 1: Enabled
-debug_pad_enabled =
-
-# Whether to enable or disable vibration
-# 0: Disabled, 1 (default): Enabled
-vibration_enabled=
-
-# Whether to enable or disable accurate vibrations
-# 0 (default): Disabled, 1: Enabled
-enable_accurate_vibrations=
-
-# Enables controller motion inputs
-# 0: Disabled, 1 (default): Enabled
-motion_enabled =
-
-# Defines the udp device's touch screen coordinate system for cemuhookudp devices
-#  - "min_x", "min_y", "max_x", "max_y"
-touch_device=
-
-# for mapping buttons to touch inputs.
-#touch_from_button_map=1
-#touch_from_button_maps_0_name=default
-#touch_from_button_maps_0_count=2
-#touch_from_button_maps_0_bind_0=foo
-#touch_from_button_maps_0_bind_1=bar
-# etc.
-
-# List of Cemuhook UDP servers, delimited by ','.
-# Default: 127.0.0.1:26760
-# Example: 127.0.0.1:26760,123.4.5.67:26761
-udp_input_servers =
-
-# Enable controlling an axis via a mouse input.
-# 0 (default): Off, 1: On
-mouse_panning =
-
-# Set mouse sensitivity.
-# Default: 1.0
-mouse_panning_sensitivity =
-
-# Emulate an analog control stick from keyboard inputs.
-# 0 (default): Disabled, 1: Enabled
-emulate_analog_keyboard =
-
-# Enable mouse inputs to the guest
-# 0 (default): Disabled, 1: Enabled
-mouse_enabled =
-
-# Enable keyboard inputs to the guest
-# 0 (default): Disabled, 1: Enabled
-keyboard_enabled =
-
-[Core]
-# Whether to use multi-core for CPU emulation
-# 0: Disabled, 1 (default): Enabled
-use_multi_core =
-
-# Enable unsafe extended guest system memory layout (8GB DRAM)
-# 0 (default): Disabled, 1: Enabled
-use_unsafe_extended_memory_layout =
-
-[Cpu]
-# Adjusts various optimizations.
-# Auto-select mode enables choice unsafe optimizations.
-# Accurate enables only safe optimizations.
-# Unsafe allows any unsafe optimizations.
-# 0 (default): Auto-select, 1: Accurate, 2: Enable unsafe optimizations
-cpu_accuracy =
-
-# Allow disabling safe optimizations.
-# 0 (default): Disabled, 1: Enabled
-cpu_debug_mode =
-
-# Enable inline page tables optimization (faster guest memory access)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_page_tables =
-
-# Enable block linking CPU optimization (reduce block dispatcher use during predictable jumps)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_block_linking =
-
-# Enable return stack buffer CPU optimization (reduce block dispatcher use during predictable returns)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_return_stack_buffer =
-
-# Enable fast dispatcher CPU optimization (use a two-tiered dispatcher architecture)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_fast_dispatcher =
-
-# Enable context elimination CPU Optimization (reduce host memory use for guest context)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_context_elimination =
-
-# Enable constant propagation CPU optimization (basic IR optimization)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_const_prop =
-
-# Enable miscellaneous CPU optimizations (basic IR optimization)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_misc_ir =
-
-# Enable reduction of memory misalignment checks (reduce memory fallbacks for misaligned access)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_reduce_misalign_checks =
-
-# Enable Host MMU Emulation (faster guest memory access)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_fastmem =
-
-# Enable Host MMU Emulation for exclusive memory instructions (faster guest memory access)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_fastmem_exclusives =
-
-# Enable fallback on failure of fastmem of exclusive memory instructions (faster guest memory access)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_recompile_exclusives =
-
-# Enable optimization to ignore invalid memory accesses (faster guest memory access)
-# 0: Disabled, 1 (default): Enabled
-cpuopt_ignore_memory_aborts =
-
-# Enable unfuse FMA (improve performance on CPUs without FMA)
-# Only enabled if cpu_accuracy is set to Unsafe. Automatically chosen with cpu_accuracy = Auto-select.
-# 0: Disabled, 1 (default): Enabled
-cpuopt_unsafe_unfuse_fma =
-
-# Enable faster FRSQRTE and FRECPE
-# Only enabled if cpu_accuracy is set to Unsafe.
-# 0: Disabled, 1 (default): Enabled
-cpuopt_unsafe_reduce_fp_error =
-
-# Enable faster ASIMD instructions (32 bits only)
-# Only enabled if cpu_accuracy is set to Unsafe. Automatically chosen with cpu_accuracy = Auto-select.
-# 0: Disabled, 1 (default): Enabled
-cpuopt_unsafe_ignore_standard_fpcr =
-
-# Enable inaccurate NaN handling
-# Only enabled if cpu_accuracy is set to Unsafe. Automatically chosen with cpu_accuracy = Auto-select.
-# 0: Disabled, 1 (default): Enabled
-cpuopt_unsafe_inaccurate_nan =
-
-# Disable address space checks (64 bits only)
-# Only enabled if cpu_accuracy is set to Unsafe. Automatically chosen with cpu_accuracy = Auto-select.
-# 0: Disabled, 1 (default): Enabled
-cpuopt_unsafe_fastmem_check =
-
-# Enable faster exclusive instructions
-# Only enabled if cpu_accuracy is set to Unsafe. Automatically chosen with cpu_accuracy = Auto-select.
-# 0: Disabled, 1 (default): Enabled
-cpuopt_unsafe_ignore_global_monitor =
-
-[Renderer]
-# Which backend API to use.
-# 0: OpenGL (unsupported), 1 (default): Vulkan, 2: Null
-backend =
-
-# Whether to enable asynchronous presentation (Vulkan only)
-# 0: Off, 1 (default): On
-async_presentation =
-
-# Forces the GPU to run at the maximum possible clocks (thermal constraints will still be applied).
-# 0 (default): Disabled, 1: Enabled
-force_max_clock =
-
-# Enable graphics API debugging mode.
-# 0 (default): Disabled, 1: Enabled
-debug =
-
-# Enable shader feedback.
-# 0 (default): Disabled, 1: Enabled
-renderer_shader_feedback =
-
-# Enable Nsight Aftermath crash dumps
-# 0 (default): Disabled, 1: Enabled
-nsight_aftermath =
-
-# Disable shader loop safety checks, executing the shader without loop logic changes
-# 0 (default): Disabled, 1: Enabled
-disable_shader_loop_safety_checks =
-
-# Which Vulkan physical device to use (defaults to 0)
-vulkan_device =
-
-# 0: 0.5x (360p/540p) [EXPERIMENTAL]
-# 1: 0.75x (540p/810p) [EXPERIMENTAL]
-# 2 (default): 1x (720p/1080p)
-# 3: 2x (1440p/2160p)
-# 4: 3x (2160p/3240p)
-# 5: 4x (2880p/4320p)
-# 6: 5x (3600p/5400p)
-# 7: 6x (4320p/6480p)
-resolution_setup =
-
-# Pixel filter to use when up- or down-sampling rendered frames.
-# 0: Nearest Neighbor
-# 1 (default): Bilinear
-# 2: Bicubic
-# 3: Gaussian
-# 4: ScaleForce
-# 5: AMD FidelityFX™️ Super Resolution [Vulkan Only]
-scaling_filter =
-
-# Anti-Aliasing (AA)
-# 0 (default): None, 1: FXAA
-anti_aliasing =
-
-# Whether to use fullscreen or borderless window mode
-# 0 (Windows default): Borderless window, 1 (All other default): Exclusive fullscreen
-fullscreen_mode =
-
-# Aspect ratio
-# 0: Default (16:9), 1: Force 4:3, 2: Force 21:9, 3: Force 16:10, 4: Stretch to Window
-aspect_ratio =
-
-# Anisotropic filtering
-# 0: Default, 1: 2x, 2: 4x, 3: 8x, 4: 16x
-max_anisotropy =
-
-# Whether to enable VSync or not.
-# OpenGL: Values other than 0 enable VSync
-# Vulkan: FIFO is selected if the requested mode is not supported by the driver.
-# FIFO (VSync) does not drop frames or exhibit tearing but is limited by the screen refresh rate.
-# FIFO Relaxed is similar to FIFO but allows tearing as it recovers from a slow down.
-# Mailbox can have lower latency than FIFO and does not tear but may drop frames.
-# Immediate (no synchronization) just presents whatever is available and can exhibit tearing.
-# 0: Immediate (Off), 1 (Default): Mailbox (On), 2: FIFO, 3: FIFO Relaxed
-use_vsync =
-
-# Selects the OpenGL shader backend. NV_gpu_program5 is required for GLASM. If NV_gpu_program5 is
-# not available and GLASM is selected, GLSL will be used.
-# 0: GLSL, 1 (default): GLASM, 2: SPIR-V
-shader_backend =
-
-# Whether to allow asynchronous shader building.
-# 0 (default): Off, 1: On
-use_asynchronous_shaders =
-
-# Uses reactive flushing instead of predictive flushing. Allowing a more accurate syncing of memory.
-# 0 (default): Off, 1: On
-use_reactive_flushing =
-
-# NVDEC emulation.
-# 0: Disabled, 1: CPU Decoding, 2 (default): GPU Decoding
-nvdec_emulation =
-
-# Accelerate ASTC texture decoding.
-# 0 (default): Off, 1: On
-accelerate_astc =
-
-# Turns on the speed limiter, which will limit the emulation speed to the desired speed limit value
-# 0: Off, 1: On (default)
-use_speed_limit =
-
-# Limits the speed of the game to run no faster than this value as a percentage of target speed
-# 1 - 9999: Speed limit as a percentage of target game speed. 100 (default)
-speed_limit =
-
-# Whether to use disk based shader cache
-# 0: Off, 1 (default): On
-use_disk_shader_cache =
-
-# Which gpu accuracy level to use
-# 0 (default): Normal, 1: High, 2: Extreme (Very slow)
-gpu_accuracy =
-
-# Whether to use asynchronous GPU emulation
-# 0 : Off (slow), 1 (default): On (fast)
-use_asynchronous_gpu_emulation =
-
-# Inform the guest that GPU operations completed more quickly than they did.
-# 0: Off, 1 (default): On
-use_fast_gpu_time =
-
-# Force unmodified buffers to be flushed, which can cost performance.
-# 0: Off (default), 1: On
-use_pessimistic_flushes =
-
-# Whether to use garbage collection or not for GPU caches.
-# 0 (default): Off, 1: On
-use_caches_gc =
-
-# The clear color for the renderer. What shows up on the sides of the bottom screen.
-# Must be in range of 0-255. Defaults to 0 for all.
-bg_red =
-bg_blue =
-bg_green =
-
-[Audio]
-# Which audio output engine to use.
-# auto (default): Auto-select
-# cubeb: Cubeb audio engine (if available)
-# sdl2: SDL2 audio engine (if available)
-# null: No audio output
-output_engine =
-
-# Which audio device to use.
-# auto (default): Auto-select
-output_device =
-
-# Output volume.
-# 100 (default): 100%, 0; mute
-volume =
-
-[Data Storage]
-# Whether to create a virtual SD card.
-# 1: Yes, 0 (default): No
-use_virtual_sd =
-
-# Whether or not to enable gamecard emulation
-# 1: Yes, 0 (default): No
-gamecard_inserted =
-
-# Whether or not the gamecard should be emulated as the current game
-# If 'gamecard_inserted' is 0 this setting is irrelevant
-# 1: Yes, 0 (default): No
-gamecard_current_game =
-
-# Path to an XCI file to use as the gamecard
-# If 'gamecard_inserted' is 0 this setting is irrelevant
-# If 'gamecard_current_game' is 1 this setting is irrelevant
-gamecard_path =
-
-[System]
-# Whether the system is docked
-# 1 (default): Yes, 0: No
-use_docked_mode =
-
-# Sets the seed for the RNG generator built into the switch
-# rng_seed will be ignored and randomly generated if rng_seed_enabled is false
-rng_seed_enabled =
-rng_seed =
-
-# Sets the current time (in seconds since 12:00 AM Jan 1, 1970) that will be used by the time service
-# This will auto-increment, with the time set being the time the game is started
-# This override will only occur if custom_rtc_enabled is true, otherwise the current time is used
-custom_rtc_enabled =
-custom_rtc =
-
-# Sets the systems language index
-# 0: Japanese, 1: English (default), 2: French, 3: German, 4: Italian, 5: Spanish, 6: Chinese,
-# 7: Korean, 8: Dutch, 9: Portuguese, 10: Russian, 11: Taiwanese, 12: British English, 13: Canadian French,
-# 14: Latin American Spanish, 15: Simplified Chinese, 16: Traditional Chinese, 17: Brazilian Portuguese
-language_index =
-
-# The system region that yuzu will use during emulation
-# -1: Auto-select (default), 0: Japan, 1: USA, 2: Europe, 3: Australia, 4: China, 5: Korea, 6: Taiwan
-region_index =
-
-# The system time zone that yuzu will use during emulation
-# 0: Auto-select (default), 1: Default (system archive value), Others: Index for specified time zone
-time_zone_index =
-
-# Sets the sound output mode.
-# 0: Mono, 1 (default): Stereo, 2: Surround
-sound_index =
-
-[Miscellaneous]
-# A filter which removes logs below a certain logging level.
-# Examples: *:Debug Kernel.SVC:Trace Service.*:Critical
-log_filter = *:Trace
-
-# Use developer keys
-# 0 (default): Disabled, 1: Enabled
-use_dev_keys =
-
-[Debugging]
-# Record frame time data, can be found in the log directory. Boolean value
-record_frame_times =
-# Determines whether or not yuzu will dump the ExeFS of all games it attempts to load while loading them
-dump_exefs=false
-# Determines whether or not yuzu will dump all NSOs it attempts to load while loading them
-dump_nso=false
-# Determines whether or not yuzu will save the filesystem access log.
-enable_fs_access_log=false
-# Enables verbose reporting services
-reporting_services =
-# Determines whether or not yuzu will report to the game that the emulated console is in Kiosk Mode
-# false: Retail/Normal Mode (default), true: Kiosk Mode
-quest_flag =
-# Determines whether debug asserts should be enabled, which will throw an exception on asserts.
-# false: Disabled (default), true: Enabled
-use_debug_asserts =
-# Determines whether unimplemented HLE service calls should be automatically stubbed.
-# false: Disabled (default), true: Enabled
-use_auto_stub =
-# Enables/Disables the macro JIT compiler
-disable_macro_jit=false
-# Determines whether to enable the GDB stub and wait for the debugger to attach before running.
-# false: Disabled (default), true: Enabled
-use_gdbstub=false
-# The port to use for the GDB server, if it is enabled.
-gdbstub_port=6543
-
-[WebService]
-# Whether or not to enable telemetry
-# 0: No, 1 (default): Yes
-enable_telemetry =
-# URL for Web API
-web_api_url = https://api.yuzu-emu.org
-# Username and token for yuzu Web Service
-# See https://profile.yuzu-emu.org/ for more info
-yuzu_username =
-yuzu_token =
-
-[Network]
-# Name of the network interface device to use with yuzu LAN play.
-# e.g. On *nix: 'enp7s0', 'wlp6s0u1u3u3', 'lo'
-# e.g. On Windows: 'Ethernet', 'Wi-Fi'
-network_interface =
-
-[AddOns]
-# Used to disable add-ons
-# List of title IDs of games that will have add-ons disabled (separated by '|'):
-title_ids =
-# For each title ID, have a key/value pair called `disabled_<title_id>` equal to the names of the add-ons to disable (sep. by '|')
-# e.x. disabled_0100000000010000 = Update|DLC <- disables Updates and DLC on Super Mario Odyssey
-)";
-} // namespace DefaultINI

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

@@ -13,6 +13,8 @@ static JavaVM* s_java_vm;
 static jclass s_native_library_class;
 static jclass s_disk_cache_progress_class;
 static jclass s_load_callback_stage_class;
+static jclass s_game_dir_class;
+static jmethodID s_game_dir_constructor;
 static jmethodID s_exit_emulation_activity;
 static jmethodID s_disk_cache_load_progress;
 static jmethodID s_on_emulation_started;
@@ -53,6 +55,14 @@ jclass GetDiskCacheLoadCallbackStageClass() {
     return s_load_callback_stage_class;
 }
 
+jclass GetGameDirClass() {
+    return s_game_dir_class;
+}
+
+jmethodID GetGameDirConstructor() {
+    return s_game_dir_constructor;
+}
+
 jmethodID GetExitEmulationActivity() {
     return s_exit_emulation_activity;
 }
@@ -90,6 +100,11 @@ jint JNI_OnLoad(JavaVM* vm, void* reserved) {
     s_load_callback_stage_class = reinterpret_cast<jclass>(env->NewGlobalRef(env->FindClass(
         "org/yuzu/yuzu_emu/disk_shader_cache/DiskShaderCacheProgress$LoadCallbackStage")));
 
+    const jclass game_dir_class = env->FindClass("org/yuzu/yuzu_emu/model/GameDir");
+    s_game_dir_class = reinterpret_cast<jclass>(env->NewGlobalRef(game_dir_class));
+    s_game_dir_constructor = env->GetMethodID(game_dir_class, "<init>", "(Ljava/lang/String;Z)V");
+    env->DeleteLocalRef(game_dir_class);
+
     // Initialize methods
     s_exit_emulation_activity =
         env->GetStaticMethodID(s_native_library_class, "exitEmulationActivity", "(I)V");
@@ -120,6 +135,7 @@ void JNI_OnUnload(JavaVM* vm, void* reserved) {
     env->DeleteGlobalRef(s_native_library_class);
     env->DeleteGlobalRef(s_disk_cache_progress_class);
     env->DeleteGlobalRef(s_load_callback_stage_class);
+    env->DeleteGlobalRef(s_game_dir_class);
 
     // UnInitialize applets
     SoftwareKeyboard::CleanupJNI(env);

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

@@ -13,6 +13,8 @@ JNIEnv* GetEnvForThread();
 jclass GetNativeLibraryClass();
 jclass GetDiskCacheProgressClass();
 jclass GetDiskCacheLoadCallbackStageClass();
+jclass GetGameDirClass();
+jmethodID GetGameDirConstructor();
 jmethodID GetExitEmulationActivity();
 jmethodID GetDiskCacheLoadProgress();
 jmethodID GetOnEmulationStarted();

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

@@ -52,8 +52,8 @@
 #include "core/hle/service/am/applets/applets.h"
 #include "core/hle/service/filesystem/filesystem.h"
 #include "core/loader/loader.h"
+#include "frontend_common/config.h"
 #include "jni/android_common/android_common.h"
-#include "jni/config.h"
 #include "jni/id_cache.h"
 #include "jni/native.h"
 #include "video_core/renderer_base.h"
@@ -664,8 +664,6 @@ void Java_org_yuzu_yuzu_1emu_NativeLibrary_onTouchReleased(JNIEnv* env, jclass c
 
 void Java_org_yuzu_yuzu_1emu_NativeLibrary_initializeSystem(JNIEnv* env, jclass clazz,
                                                             jboolean reload) {
-    // Create the default config.ini.
-    Config{};
     // Initialize the emulated system.
     if (!reload) {
         EmulationSession::GetInstance().System().Initialize();
@@ -680,17 +678,6 @@ jint Java_org_yuzu_yuzu_1emu_NativeLibrary_defaultCPUCore(JNIEnv* env, jclass cl
 void Java_org_yuzu_yuzu_1emu_NativeLibrary_run__Ljava_lang_String_2Ljava_lang_String_2Z(
     JNIEnv* env, jclass clazz, jstring j_file, jstring j_savestate, jboolean j_delete_savestate) {}
 
-void Java_org_yuzu_yuzu_1emu_NativeLibrary_reloadSettings(JNIEnv* env, jclass clazz) {
-    Config{};
-}
-
-void Java_org_yuzu_yuzu_1emu_NativeLibrary_initGameIni(JNIEnv* env, jclass clazz,
-                                                       jstring j_game_id) {
-    std::string_view game_id = env->GetStringUTFChars(j_game_id, 0);
-
-    env->ReleaseStringUTFChars(j_game_id, game_id.data());
-}
-
 jdoubleArray Java_org_yuzu_yuzu_1emu_NativeLibrary_getPerfStats(JNIEnv* env, jclass clazz) {
     jdoubleArray j_stats = env->NewDoubleArray(4);
 
@@ -707,6 +694,14 @@ jdoubleArray Java_org_yuzu_yuzu_1emu_NativeLibrary_getPerfStats(JNIEnv* env, jcl
     return j_stats;
 }
 
+jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_getCpuBackend(JNIEnv* env, jclass clazz) {
+    if (Settings::IsNceEnabled()) {
+        return ToJString(env, "NCE");
+    }
+
+    return ToJString(env, "JIT");
+}
+
 void Java_org_yuzu_yuzu_1emu_utils_DirectoryInitialization_setSysDirectory(JNIEnv* env,
                                                                            jclass clazz,
                                                                            jstring j_path) {}

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

@@ -5,11 +5,15 @@
 
 #include <jni.h>
 
+#include "android_config.h"
+#include "android_settings.h"
 #include "common/logging/log.h"
 #include "common/settings.h"
+#include "frontend_common/config.h"
 #include "jni/android_common/android_common.h"
-#include "jni/config.h"
-#include "uisettings.h"
+#include "jni/id_cache.h"
+
+std::unique_ptr<AndroidConfig> config;
 
 template <typename T>
 Settings::Setting<T>* getSetting(JNIEnv* env, jstring jkey) {
@@ -28,6 +32,22 @@ Settings::Setting<T>* getSetting(JNIEnv* env, jstring jkey) {
 
 extern "C" {
 
+void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_initializeConfig(JNIEnv* env, jobject obj) {
+    config = std::make_unique<AndroidConfig>();
+}
+
+void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_unloadConfig(JNIEnv* env, jobject obj) {
+    config.reset();
+}
+
+void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_reloadSettings(JNIEnv* env, jobject obj) {
+    config->AndroidConfig::ReloadAllValues();
+}
+
+void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_saveSettings(JNIEnv* env, jobject obj) {
+    config->AndroidConfig::SaveAllValues();
+}
+
 jboolean Java_org_yuzu_yuzu_1emu_utils_NativeConfig_getBoolean(JNIEnv* env, jobject obj,
                                                                jstring jkey, jboolean getDefault) {
     auto setting = getSetting<bool>(env, jkey);
@@ -234,4 +254,55 @@ jstring Java_org_yuzu_yuzu_1emu_utils_NativeConfig_getPairedSettingKey(JNIEnv* e
     return ToJString(env, setting->PairedSetting()->GetLabel());
 }
 
+jobjectArray Java_org_yuzu_yuzu_1emu_utils_NativeConfig_getGameDirs(JNIEnv* env, jobject obj) {
+    jclass gameDirClass = IDCache::GetGameDirClass();
+    jmethodID gameDirConstructor = IDCache::GetGameDirConstructor();
+    jobjectArray jgameDirArray =
+        env->NewObjectArray(AndroidSettings::values.game_dirs.size(), gameDirClass, nullptr);
+    for (size_t i = 0; i < AndroidSettings::values.game_dirs.size(); ++i) {
+        jobject jgameDir =
+            env->NewObject(gameDirClass, gameDirConstructor,
+                           ToJString(env, AndroidSettings::values.game_dirs[i].path),
+                           static_cast<jboolean>(AndroidSettings::values.game_dirs[i].deep_scan));
+        env->SetObjectArrayElement(jgameDirArray, i, jgameDir);
+    }
+    return jgameDirArray;
+}
+
+void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_setGameDirs(JNIEnv* env, jobject obj,
+                                                            jobjectArray gameDirs) {
+    AndroidSettings::values.game_dirs.clear();
+    int size = env->GetArrayLength(gameDirs);
+
+    if (size == 0) {
+        return;
+    }
+
+    jobject dir = env->GetObjectArrayElement(gameDirs, 0);
+    jclass gameDirClass = IDCache::GetGameDirClass();
+    jfieldID uriStringField = env->GetFieldID(gameDirClass, "uriString", "Ljava/lang/String;");
+    jfieldID deepScanBooleanField = env->GetFieldID(gameDirClass, "deepScan", "Z");
+    for (int i = 0; i < size; ++i) {
+        dir = env->GetObjectArrayElement(gameDirs, i);
+        jstring juriString = static_cast<jstring>(env->GetObjectField(dir, uriStringField));
+        jboolean jdeepScanBoolean = env->GetBooleanField(dir, deepScanBooleanField);
+        std::string uriString = GetJString(env, juriString);
+        AndroidSettings::values.game_dirs.push_back(
+            AndroidSettings::GameDir{uriString, static_cast<bool>(jdeepScanBoolean)});
+    }
+}
+
+void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_addGameDir(JNIEnv* env, jobject obj,
+                                                           jobject gameDir) {
+    jclass gameDirClass = IDCache::GetGameDirClass();
+    jfieldID uriStringField = env->GetFieldID(gameDirClass, "uriString", "Ljava/lang/String;");
+    jfieldID deepScanBooleanField = env->GetFieldID(gameDirClass, "deepScan", "Z");
+
+    jstring juriString = static_cast<jstring>(env->GetObjectField(gameDir, uriStringField));
+    jboolean jdeepScanBoolean = env->GetBooleanField(gameDir, deepScanBooleanField);
+    std::string uriString = GetJString(env, juriString);
+    AndroidSettings::values.game_dirs.push_back(
+        AndroidSettings::GameDir{uriString, static_cast<bool>(jdeepScanBoolean)});
+}
+
 } // extern "C"

src/android/app/src/main/res/layout/card_folder.xml

@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    style="?attr/materialCardViewOutlinedStyle"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginHorizontal="16dp"
+    android:layout_marginVertical="12dp"
+    android:focusable="true">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:padding="16dp"
+        android:layout_gravity="center_vertical"
+        android:animateLayoutChanges="true">
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/path"
+            style="@style/TextAppearance.Material3.BodyLarge"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical|start"
+            android:ellipsize="none"
+            android:marqueeRepeatLimit="marquee_forever"
+            android:requiresFadingEdge="horizontal"
+            android:singleLine="true"
+            android:textAlignment="viewStart"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/button_layout"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:text="@string/select_gpu_driver_default" />
+
+        <LinearLayout
+            android:id="@+id/button_layout"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="parent">
+
+            <Button
+                android:id="@+id/button_edit"
+                style="@style/Widget.Material3.Button.IconButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:contentDescription="@string/delete"
+                android:tooltipText="@string/edit"
+                app:icon="@drawable/ic_edit"
+                app:iconTint="?attr/colorControlNormal" />
+
+            <Button
+                android:id="@+id/button_delete"
+                style="@style/Widget.Material3.Button.IconButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:contentDescription="@string/delete"
+                android:tooltipText="@string/delete"
+                app:icon="@drawable/ic_delete"
+                app:iconTint="?attr/colorControlNormal" />
+
+        </LinearLayout>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</com.google.android.material.card.MaterialCardView>

src/android/app/src/main/res/layout/dialog_add_folder.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="24dp"
+    android:orientation="vertical">
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/path"
+        style="@style/TextAppearance.Material3.BodyLarge"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_gravity="center_vertical|start"
+        android:layout_weight="1"
+        android:ellipsize="marquee"
+        android:marqueeRepeatLimit="marquee_forever"
+        android:requiresFadingEdge="horizontal"
+        android:singleLine="true"
+        android:textAlignment="viewStart"
+        tools:text="folder/folder/folder/folder" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:paddingTop="8dp">
+
+        <com.google.android.material.textview.MaterialTextView
+            style="@style/TextAppearance.Material3.BodyMedium"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical|start"
+            android:layout_weight="1"
+            android:text="@string/deep_scan"
+            android:textAlignment="viewStart" />
+
+        <com.google.android.material.checkbox.MaterialCheckBox
+            android:id="@+id/deep_scan_switch"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" />
+
+    </LinearLayout>
+
+</LinearLayout>

src/android/app/src/main/res/layout/dialog_folder_properties.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="24dp"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:id="@+id/deep_scan_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <com.google.android.material.textview.MaterialTextView
+            style="@style/TextAppearance.Material3.BodyMedium"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical|start"
+            android:layout_weight="1"
+            android:text="@string/deep_scan"
+            android:textAlignment="viewStart" />
+
+        <com.google.android.material.checkbox.MaterialCheckBox
+            android:id="@+id/deep_scan_switch"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content" />
+
+    </LinearLayout>
+
+</LinearLayout>

src/android/app/src/main/res/layout/fragment_folders.xml

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/coordinator_folders"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="?attr/colorSurface">
+
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <com.google.android.material.appbar.AppBarLayout
+            android:id="@+id/appbar_folders"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:fitsSystemWindows="true"
+            app:liftOnScrollTargetViewId="@id/list_folders">
+
+            <com.google.android.material.appbar.MaterialToolbar
+                android:id="@+id/toolbar_folders"
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize"
+                app:navigationIcon="@drawable/ic_back"
+                app:title="@string/game_folders" />
+
+        </com.google.android.material.appbar.AppBarLayout>
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/list_folders"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:clipToPadding="false"
+            app:layout_behavior="@string/appbar_scrolling_view_behavior" />
+
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/button_add"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:contentDescription="@string/add_games"
+        app:srcCompat="@drawable/ic_add"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

src/android/app/src/main/res/layout/fragment_search.xml

@@ -127,6 +127,7 @@
             android:layout_height="wrap_content"
             android:clipToPadding="false"
             android:paddingVertical="4dp"
+            app:checkedChip="@id/chip_recently_played"
             app:chipSpacingHorizontal="12dp"
             app:singleLine="true"
             app:singleSelection="true">

src/android/app/src/main/res/navigation/home_navigation.xml

@@ -28,6 +28,9 @@
         <action
             android:id="@+id/action_homeSettingsFragment_to_appletLauncherFragment"
             app:destination="@id/appletLauncherFragment" />
+        <action
+            android:id="@+id/action_homeSettingsFragment_to_gameFoldersFragment"
+            app:destination="@id/gameFoldersFragment" />
     </fragment>
 
     <fragment
@@ -117,5 +120,9 @@
         android:id="@+id/cabinetLauncherDialogFragment"
         android:name="org.yuzu.yuzu_emu.fragments.CabinetLauncherDialogFragment"
         android:label="CabinetLauncherDialogFragment" />
+    <fragment
+        android:id="@+id/gameFoldersFragment"
+        android:name="org.yuzu.yuzu_emu.fragments.GameFoldersFragment"
+        android:label="GameFoldersFragment" />
 
 </navigation>

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

@@ -175,6 +175,24 @@
         <item>2</item>
     </integer-array>
 
+    <string-array name="cpuBackendArm64Names">
+        <item>@string/cpu_backend_dynarmic</item>
+        <item>@string/cpu_backend_nce</item>
+    </string-array>
+
+    <integer-array name="cpuBackendArm64Values">
+        <item>0</item>
+        <item>1</item>
+    </integer-array>
+
+    <string-array name="cpuBackendX86Names">
+        <item>@string/cpu_backend_dynarmic</item>
+    </string-array>
+
+    <integer-array name="cpuBackendX86Values">
+        <item>0</item>
+    </integer-array>
+
     <string-array name="cpuAccuracyNames">
         <item>@string/auto</item>
         <item>@string/cpu_accuracy_accurate</item>

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

@@ -13,7 +13,7 @@
     <dimen name="menu_width">256dp</dimen>
     <dimen name="card_width">165dp</dimen>
     <dimen name="icon_inset">24dp</dimen>
-    <dimen name="spacing_bottom_list_fab">72dp</dimen>
+    <dimen name="spacing_bottom_list_fab">76dp</dimen>
     <dimen name="spacing_fab">24dp</dimen>
 
     <dimen name="dialog_margin">20dp</dimen>

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

@@ -38,6 +38,7 @@
     <string name="empty_gamelist">No files were found or no game directory has been selected yet.</string>
     <string name="search_and_filter_games">Search and filter games</string>
     <string name="select_games_folder">Select games folder</string>
+    <string name="manage_game_folders">Manage game folders</string>
     <string name="select_games_folder_description">Allows yuzu to populate the games list</string>
     <string name="add_games_warning">Skip selecting games folder?</string>
     <string name="add_games_warning_description">Games won\'t be displayed in the Games list if a folder isn\'t selected.</string>
@@ -91,6 +92,7 @@
     <string name="manage_save_data">Manage save data</string>
     <string name="manage_save_data_description">Save data found. Please select an option below.</string>
     <string name="import_export_saves_description">Import or export save files</string>
+    <string name="save_files_exporting">Exporting save files…</string>
     <string name="save_file_imported_success">Imported successfully</string>
     <string name="save_file_invalid_zip_structure">Invalid save directory structure</string>
     <string name="save_file_invalid_zip_structure_description">The first subfolder name must be the title ID of the game.</string>
@@ -123,6 +125,11 @@
     <string name="manage_yuzu_data_description">Import/export firmware, keys, user data, and more!</string>
     <string name="share_save_file">Share save file</string>
     <string name="export_save_failed">Failed to export save</string>
+    <string name="game_folders">Game folders</string>
+    <string name="deep_scan">Deep scan</string>
+    <string name="add_game_folder">Add game folder</string>
+    <string name="folder_already_added">This folder was already added!</string>
+    <string name="game_folder_properties">Game folder properties</string>
 
     <!-- Applet launcher strings -->
     <string name="applets">Applet launcher</string>
@@ -184,6 +191,7 @@
     <string name="frame_limit_enable_description">Limits emulation speed to a specified percentage of normal speed.</string>
     <string name="frame_limit_slider">Limit speed percent</string>
     <string name="frame_limit_slider_description">Specifies the percentage to limit emulation speed. 100% is the normal speed. Values higher or lower will increase or decrease the speed limit.</string>
+    <string name="cpu_backend">CPU backend</string>
     <string name="cpu_accuracy">CPU accuracy</string>
     <string name="value_with_units">%1$s%2$s</string>
 
@@ -256,6 +264,8 @@
     <string name="cancelling">Cancelling</string>
     <string name="install">Install</string>
     <string name="delete">Delete</string>
+    <string name="edit">Edit</string>
+    <string name="export_success">Exported successfully</string>
 
     <!-- GPU driver installation -->
     <string name="select_gpu_driver">Select GPU driver</string>
@@ -414,6 +424,10 @@
     <string name="ratio_force_sixteen_ten">Force 16:10</string>
     <string name="ratio_stretch">Stretch to window</string>
 
+    <!-- CPU Backend -->
+    <string name="cpu_backend_dynarmic">Dynarmic (Slow)</string>
+    <string name="cpu_backend_nce">Native code execution (NCE)</string>
+
     <!-- CPU Accuracy -->
     <string name="cpu_accuracy_accurate">Accurate</string>
     <string name="cpu_accuracy_unsafe">Unsafe</string>

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

@@ -12,7 +12,7 @@ bool IsValidChannelCount(u32 channel_count) {
 }
 
 bool IsValidStreamCounts(u32 total_stream_count, u32 stereo_stream_count) {
-    return total_stream_count > 0 && stereo_stream_count > 0 &&
+    return total_stream_count > 0 && static_cast<s32>(stereo_stream_count) >= 0 &&
            stereo_stream_count <= total_stream_count && IsValidChannelCount(total_stream_count);
 }
 } // namespace

src/audio_core/opus/decoder.cpp

@@ -148,7 +148,7 @@ Result OpusDecoder::DecodeInterleavedForMultiStream(u32* out_data_size, u64* out
     auto* header_p{reinterpret_cast<const OpusPacketHeader*>(input_data.data())};
     OpusPacketHeader header{ReverseHeader(*header_p)};
 
-    LOG_ERROR(Service_Audio, "header size 0x{:X} input data size 0x{:X} in_data size 0x{:X}",
+    LOG_TRACE(Service_Audio, "header size 0x{:X} input data size 0x{:X} in_data size 0x{:X}",
               header.size, input_data.size_bytes(), in_data.size_bytes());
 
     R_UNLESS(in_data.size_bytes() >= header.size &&

src/common/CMakeLists.txt

@@ -52,6 +52,7 @@ add_library(common STATIC
     fiber.cpp
     fiber.h
     fixed_point.h
+    free_region_manager.h
     fs/file.cpp
     fs/file.h
     fs/fs.cpp
@@ -166,6 +167,13 @@ if (WIN32)
   target_link_libraries(common PRIVATE ntdll)
 endif()
 
+if (NOT WIN32)
+  target_sources(common PRIVATE
+    signal_chain.cpp
+    signal_chain.h
+  )
+endif()
+
 if(ANDROID)
     target_sources(common
         PRIVATE
@@ -191,7 +199,7 @@ if(ARCHITECTURE_x86_64)
     target_link_libraries(common PRIVATE xbyak::xbyak)
 endif()
 
-if (ARCHITECTURE_arm64 AND (ANDROID OR LINUX))
+if (HAS_NCE)
     target_sources(common
         PRIVATE
             arm64/native_clock.cpp

src/common/free_region_manager.h

@@ -0,0 +1,55 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <mutex>
+#include <boost/icl/interval_set.hpp>
+
+namespace Common {
+
+class FreeRegionManager {
+public:
+    explicit FreeRegionManager() = default;
+    ~FreeRegionManager() = default;
+
+    void SetAddressSpace(void* start, size_t size) {
+        this->FreeBlock(start, size);
+    }
+
+    std::pair<void*, size_t> FreeBlock(void* block_ptr, size_t size) {
+        std::scoped_lock lk(m_mutex);
+
+        // Check to see if we are adjacent to any regions.
+        auto start_address = reinterpret_cast<uintptr_t>(block_ptr);
+        auto end_address = start_address + size;
+        auto it = m_free_regions.find({start_address - 1, end_address + 1});
+
+        // If we are, join with them, ensuring we stay in bounds.
+        if (it != m_free_regions.end()) {
+            start_address = std::min(start_address, it->lower());
+            end_address = std::max(end_address, it->upper());
+        }
+
+        // Free the relevant region.
+        m_free_regions.insert({start_address, end_address});
+
+        // Return the adjusted pointers.
+        block_ptr = reinterpret_cast<void*>(start_address);
+        size = end_address - start_address;
+        return {block_ptr, size};
+    }
+
+    void AllocateBlock(void* block_ptr, size_t size) {
+        std::scoped_lock lk(m_mutex);
+
+        auto address = reinterpret_cast<uintptr_t>(block_ptr);
+        m_free_regions.subtract({address, address + size});
+    }
+
+private:
+    std::mutex m_mutex;
+    boost::icl::interval_set<uintptr_t> m_free_regions;
+};
+
+} // namespace Common

src/common/host_memory.cpp

@@ -21,15 +21,18 @@
 #include <boost/icl/interval_set.hpp>
 #include <fcntl.h>
 #include <sys/mman.h>
+#include <sys/random.h>
 #include <unistd.h>
 #include "common/scope_exit.h"
 
 #endif // ^^^ Linux ^^^
 
 #include <mutex>
+#include <random>
 
 #include "common/alignment.h"
 #include "common/assert.h"
+#include "common/free_region_manager.h"
 #include "common/host_memory.h"
 #include "common/logging/log.h"
 
@@ -141,7 +144,7 @@ public:
         Release();
     }
 
-    void Map(size_t virtual_offset, size_t host_offset, size_t length) {
+    void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perms) {
         std::unique_lock lock{placeholder_mutex};
         if (!IsNiechePlaceholder(virtual_offset, length)) {
             Split(virtual_offset, length);
@@ -160,7 +163,7 @@ public:
         }
     }
 
-    void Protect(size_t virtual_offset, size_t length, bool read, bool write) {
+    void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute) {
         DWORD new_flags{};
         if (read && write) {
             new_flags = PAGE_READWRITE;
@@ -186,6 +189,11 @@ public:
         }
     }
 
+    void EnableDirectMappedAddress() {
+        // TODO
+        UNREACHABLE();
+    }
+
     const size_t backing_size; ///< Size of the backing memory in bytes
     const size_t virtual_size; ///< Size of the virtual address placeholder in bytes
 
@@ -353,6 +361,55 @@ private:
 
 #elif defined(__linux__) || defined(__FreeBSD__) // ^^^ Windows ^^^ vvv Linux vvv
 
+#ifdef ARCHITECTURE_arm64
+
+static void* ChooseVirtualBase(size_t virtual_size) {
+    constexpr uintptr_t Map39BitSize = (1ULL << 39);
+    constexpr uintptr_t Map36BitSize = (1ULL << 36);
+
+    // This is not a cryptographic application, we just want something random.
+    std::mt19937_64 rng;
+
+    // We want to ensure we are allocating at an address aligned to the L2 block size.
+    // For Qualcomm devices, we must also allocate memory above 36 bits.
+    const size_t lower = Map36BitSize / HugePageSize;
+    const size_t upper = (Map39BitSize - virtual_size) / HugePageSize;
+    const size_t range = upper - lower;
+
+    // Try up to 64 times to allocate memory at random addresses in the range.
+    for (int i = 0; i < 64; i++) {
+        // Calculate a possible location.
+        uintptr_t hint_address = ((rng() % range) + lower) * HugePageSize;
+
+        // Try to map.
+        // Note: we may be able to take advantage of MAP_FIXED_NOREPLACE here.
+        void* map_pointer =
+            mmap(reinterpret_cast<void*>(hint_address), virtual_size, PROT_READ | PROT_WRITE,
+                 MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0);
+
+        // If we successfully mapped, we're done.
+        if (reinterpret_cast<uintptr_t>(map_pointer) == hint_address) {
+            return map_pointer;
+        }
+
+        // Unmap if necessary, and try again.
+        if (map_pointer != MAP_FAILED) {
+            munmap(map_pointer, virtual_size);
+        }
+    }
+
+    return MAP_FAILED;
+}
+
+#else
+
+static void* ChooseVirtualBase(size_t virtual_size) {
+    return mmap(nullptr, virtual_size, PROT_READ | PROT_WRITE,
+                MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0);
+}
+
+#endif
+
 class HostMemory::Impl {
 public:
     explicit Impl(size_t backing_size_, size_t virtual_size_)
@@ -415,8 +472,7 @@ public:
             }
         }
 #else
-        virtual_base = static_cast<u8*>(mmap(nullptr, virtual_size, PROT_NONE,
-                                             MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0));
+        virtual_base = virtual_map_base = static_cast<u8*>(ChooseVirtualBase(virtual_size));
         if (virtual_base == MAP_FAILED) {
             LOG_CRITICAL(HW_Memory, "mmap failed: {}", strerror(errno));
             throw std::bad_alloc{};
@@ -424,7 +480,7 @@ public:
         madvise(virtual_base, virtual_size, MADV_HUGEPAGE);
 #endif
 
-        placeholders.add({0, virtual_size});
+        free_manager.SetAddressSpace(virtual_base, virtual_size);
         good = true;
     }
 
@@ -432,14 +488,29 @@ public:
         Release();
     }
 
-    void Map(size_t virtual_offset, size_t host_offset, size_t length) {
-        {
-            std::scoped_lock lock{placeholder_mutex};
-            placeholders.subtract({virtual_offset, virtual_offset + length});
-        }
+    void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perms) {
+        // Intersect the range with our address space.
+        AdjustMap(&virtual_offset, &length);
 
-        void* ret = mmap(virtual_base + virtual_offset, length, PROT_READ | PROT_WRITE,
-                         MAP_SHARED | MAP_FIXED, fd, host_offset);
+        // We are removing a placeholder.
+        free_manager.AllocateBlock(virtual_base + virtual_offset, length);
+
+        // Deduce mapping protection flags.
+        int flags = PROT_NONE;
+        if (True(perms & MemoryPermission::Read)) {
+            flags |= PROT_READ;
+        }
+        if (True(perms & MemoryPermission::Write)) {
+            flags |= PROT_WRITE;
+        }
+#ifdef ARCHITECTURE_arm64
+        if (True(perms & MemoryPermission::Execute)) {
+            flags |= PROT_EXEC;
+        }
+#endif
+
+        void* ret = mmap(virtual_base + virtual_offset, length, flags, MAP_SHARED | MAP_FIXED, fd,
+                         host_offset);
         ASSERT_MSG(ret != MAP_FAILED, "mmap failed: {}", strerror(errno));
     }
 
@@ -447,47 +518,54 @@ public:
         // The method name is wrong. We're still talking about the virtual range.
         // We don't want to unmap, we want to reserve this memory.
 
-        {
-            std::scoped_lock lock{placeholder_mutex};
-            auto it = placeholders.find({virtual_offset - 1, virtual_offset + length + 1});
+        // Intersect the range with our address space.
+        AdjustMap(&virtual_offset, &length);
 
-            if (it != placeholders.end()) {
-                size_t prev_upper = virtual_offset + length;
-                virtual_offset = std::min(virtual_offset, it->lower());
-                length = std::max(it->upper(), prev_upper) - virtual_offset;
-            }
+        // Merge with any adjacent placeholder mappings.
+        auto [merged_pointer, merged_size] =
+            free_manager.FreeBlock(virtual_base + virtual_offset, length);
 
-            placeholders.add({virtual_offset, virtual_offset + length});
-        }
-
-        void* ret = mmap(virtual_base + virtual_offset, length, PROT_NONE,
+        void* ret = mmap(merged_pointer, merged_size, PROT_NONE,
                          MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
         ASSERT_MSG(ret != MAP_FAILED, "mmap failed: {}", strerror(errno));
     }
 
-    void Protect(size_t virtual_offset, size_t length, bool read, bool write) {
-        int flags = 0;
+    void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute) {
+        // Intersect the range with our address space.
+        AdjustMap(&virtual_offset, &length);
+
+        int flags = PROT_NONE;
         if (read) {
             flags |= PROT_READ;
         }
         if (write) {
             flags |= PROT_WRITE;
         }
+#ifdef HAS_NCE
+        if (execute) {
+            flags |= PROT_EXEC;
+        }
+#endif
         int ret = mprotect(virtual_base + virtual_offset, length, flags);
         ASSERT_MSG(ret == 0, "mprotect failed: {}", strerror(errno));
     }
 
+    void EnableDirectMappedAddress() {
+        virtual_base = nullptr;
+    }
+
     const size_t backing_size; ///< Size of the backing memory in bytes
     const size_t virtual_size; ///< Size of the virtual address placeholder in bytes
 
     u8* backing_base{reinterpret_cast<u8*>(MAP_FAILED)};
     u8* virtual_base{reinterpret_cast<u8*>(MAP_FAILED)};
+    u8* virtual_map_base{reinterpret_cast<u8*>(MAP_FAILED)};
 
 private:
     /// Release all resources in the object
     void Release() {
-        if (virtual_base != MAP_FAILED) {
-            int ret = munmap(virtual_base, virtual_size);
+        if (virtual_map_base != MAP_FAILED) {
+            int ret = munmap(virtual_map_base, virtual_size);
             ASSERT_MSG(ret == 0, "munmap failed: {}", strerror(errno));
         }
 
@@ -502,10 +580,29 @@ private:
         }
     }
 
-    int fd{-1}; // memfd file descriptor, -1 is the error value of memfd_create
+    void AdjustMap(size_t* virtual_offset, size_t* length) {
+        if (virtual_base != nullptr) {
+            return;
+        }
 
-    boost::icl::interval_set<size_t> placeholders; ///< Mapped placeholders
-    std::mutex placeholder_mutex;                  ///< Mutex for placeholders
+        // If we are direct mapped, we want to make sure we are operating on a region
+        // that is in range of our virtual mapping.
+        size_t intended_start = *virtual_offset;
+        size_t intended_end = intended_start + *length;
+        size_t address_space_start = reinterpret_cast<size_t>(virtual_map_base);
+        size_t address_space_end = address_space_start + virtual_size;
+
+        if (address_space_start > intended_end || intended_start > address_space_end) {
+            *virtual_offset = 0;
+            *length = 0;
+        } else {
+            *virtual_offset = std::max(intended_start, address_space_start);
+            *length = std::min(intended_end, address_space_end) - *virtual_offset;
+        }
+    }
+
+    int fd{-1}; // memfd file descriptor, -1 is the error value of memfd_create
+    FreeRegionManager free_manager{};
 };
 
 #else // ^^^ Linux ^^^ vvv Generic vvv
@@ -518,11 +615,13 @@ public:
         throw std::bad_alloc{};
     }
 
-    void Map(size_t virtual_offset, size_t host_offset, size_t length) {}
+    void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perm) {}
 
     void Unmap(size_t virtual_offset, size_t length) {}
 
-    void Protect(size_t virtual_offset, size_t length, bool read, bool write) {}
+    void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute) {}
+
+    void EnableDirectMappedAddress() {}
 
     u8* backing_base{nullptr};
     u8* virtual_base{nullptr};
@@ -535,15 +634,16 @@ HostMemory::HostMemory(size_t backing_size_, size_t virtual_size_)
     try {
         // Try to allocate a fastmem arena.
         // The implementation will fail with std::bad_alloc on errors.
-        impl = std::make_unique<HostMemory::Impl>(AlignUp(backing_size, PageAlignment),
-                                                  AlignUp(virtual_size, PageAlignment) +
-                                                      3 * HugePageSize);
+        impl =
+            std::make_unique<HostMemory::Impl>(AlignUp(backing_size, PageAlignment),
+                                               AlignUp(virtual_size, PageAlignment) + HugePageSize);
         backing_base = impl->backing_base;
         virtual_base = impl->virtual_base;
 
         if (virtual_base) {
-            virtual_base += 2 * HugePageSize - 1;
-            virtual_base -= reinterpret_cast<size_t>(virtual_base) & (HugePageSize - 1);
+            // Ensure the virtual base is aligned to the L2 block size.
+            virtual_base = reinterpret_cast<u8*>(
+                Common::AlignUp(reinterpret_cast<uintptr_t>(virtual_base), HugePageSize));
             virtual_base_offset = virtual_base - impl->virtual_base;
         }
 
@@ -562,7 +662,8 @@ HostMemory::HostMemory(HostMemory&&) noexcept = default;
 
 HostMemory& HostMemory::operator=(HostMemory&&) noexcept = default;
 
-void HostMemory::Map(size_t virtual_offset, size_t host_offset, size_t length) {
+void HostMemory::Map(size_t virtual_offset, size_t host_offset, size_t length,
+                     MemoryPermission perms) {
     ASSERT(virtual_offset % PageAlignment == 0);
     ASSERT(host_offset % PageAlignment == 0);
     ASSERT(length % PageAlignment == 0);
@@ -571,7 +672,7 @@ void HostMemory::Map(size_t virtual_offset, size_t host_offset, size_t length) {
     if (length == 0 || !virtual_base || !impl) {
         return;
     }
-    impl->Map(virtual_offset + virtual_base_offset, host_offset, length);
+    impl->Map(virtual_offset + virtual_base_offset, host_offset, length, perms);
 }
 
 void HostMemory::Unmap(size_t virtual_offset, size_t length) {
@@ -584,14 +685,22 @@ void HostMemory::Unmap(size_t virtual_offset, size_t length) {
     impl->Unmap(virtual_offset + virtual_base_offset, length);
 }
 
-void HostMemory::Protect(size_t virtual_offset, size_t length, bool read, bool write) {
+void HostMemory::Protect(size_t virtual_offset, size_t length, bool read, bool write,
+                         bool execute) {
     ASSERT(virtual_offset % PageAlignment == 0);
     ASSERT(length % PageAlignment == 0);
     ASSERT(virtual_offset + length <= virtual_size);
     if (length == 0 || !virtual_base || !impl) {
         return;
     }
-    impl->Protect(virtual_offset + virtual_base_offset, length, read, write);
+    impl->Protect(virtual_offset + virtual_base_offset, length, read, write, execute);
+}
+
+void HostMemory::EnableDirectMappedAddress() {
+    if (impl) {
+        impl->EnableDirectMappedAddress();
+        virtual_size += reinterpret_cast<uintptr_t>(virtual_base);
+    }
 }
 
 } // namespace Common

src/common/host_memory.h

@@ -4,11 +4,20 @@
 #pragma once
 
 #include <memory>
+#include "common/common_funcs.h"
 #include "common/common_types.h"
 #include "common/virtual_buffer.h"
 
 namespace Common {
 
+enum class MemoryPermission : u32 {
+    Read = 1 << 0,
+    Write = 1 << 1,
+    ReadWrite = Read | Write,
+    Execute = 1 << 2,
+};
+DECLARE_ENUM_FLAG_OPERATORS(MemoryPermission)
+
 /**
  * A low level linear memory buffer, which supports multiple mappings
  * Its purpose is to rebuild a given sparse memory layout, including mirrors.
@@ -31,11 +40,13 @@ public:
     HostMemory(HostMemory&& other) noexcept;
     HostMemory& operator=(HostMemory&& other) noexcept;
 
-    void Map(size_t virtual_offset, size_t host_offset, size_t length);
+    void Map(size_t virtual_offset, size_t host_offset, size_t length, MemoryPermission perms);
 
     void Unmap(size_t virtual_offset, size_t length);
 
-    void Protect(size_t virtual_offset, size_t length, bool read, bool write);
+    void Protect(size_t virtual_offset, size_t length, bool read, bool write, bool execute = false);
+
+    void EnableDirectMappedAddress();
 
     [[nodiscard]] u8* BackingBasePointer() noexcept {
         return backing_base;

src/common/settings.cpp

@@ -41,6 +41,7 @@ SWITCHABLE(AspectRatio, true);
 SWITCHABLE(AstcDecodeMode, true);
 SWITCHABLE(AstcRecompression, true);
 SWITCHABLE(AudioMode, true);
+SWITCHABLE(CpuBackend, true);
 SWITCHABLE(CpuAccuracy, true);
 SWITCHABLE(FullscreenMode, true);
 SWITCHABLE(GpuAccuracy, true);
@@ -155,6 +156,22 @@ bool IsFastmemEnabled() {
     return true;
 }
 
+static bool is_nce_enabled = false;
+
+void SetNceEnabled(bool is_39bit) {
+    const bool is_nce_selected = values.cpu_backend.GetValue() == CpuBackend::Nce;
+    is_nce_enabled = IsFastmemEnabled() && is_nce_selected && is_39bit;
+    if (is_nce_selected && !is_nce_enabled) {
+        LOG_WARNING(
+            Common,
+            "Program does not utilize 39-bit address space, unable to natively execute code");
+    }
+}
+
+bool IsNceEnabled() {
+    return is_nce_enabled;
+}
+
 bool IsDockedMode() {
     return values.use_docked_mode.GetValue() == Settings::ConsoleMode::Docked;
 }
@@ -206,9 +223,9 @@ const char* TranslateCategory(Category category) {
     case Category::UiAudio:
         return "UiAudio";
     case Category::UiLayout:
-        return "UiLayout";
+        return "UILayout";
     case Category::UiGameList:
-        return "UiGameList";
+        return "UIGameList";
     case Category::Screenshots:
         return "Screenshots";
     case Category::Shortcuts:

src/common/settings.h

@@ -63,6 +63,7 @@ SWITCHABLE(AspectRatio, true);
 SWITCHABLE(AstcDecodeMode, true);
 SWITCHABLE(AstcRecompression, true);
 SWITCHABLE(AudioMode, true);
+SWITCHABLE(CpuBackend, true);
 SWITCHABLE(CpuAccuracy, true);
 SWITCHABLE(FullscreenMode, true);
 SWITCHABLE(GpuAccuracy, true);
@@ -179,6 +180,14 @@ struct Values {
                                              &use_speed_limit};
 
     // Cpu
+    SwitchableSetting<CpuBackend, true> cpu_backend{
+        linkage,         CpuBackend::Dynarmic, CpuBackend::Dynarmic,
+#ifdef HAS_NCE
+        CpuBackend::Nce,
+#else
+                                                    CpuBackend::Dynarmic,
+#endif
+        "cpu_backend",   Category::Cpu};
     SwitchableSetting<CpuAccuracy, true> cpu_accuracy{linkage,           CpuAccuracy::Auto,
                                                       CpuAccuracy::Auto, CpuAccuracy::Paranoid,
                                                       "cpu_accuracy",    Category::Cpu};
@@ -232,7 +241,11 @@ struct Values {
     SwitchableSetting<bool> use_asynchronous_gpu_emulation{
         linkage, true, "use_asynchronous_gpu_emulation", Category::Renderer};
     SwitchableSetting<AstcDecodeMode, true> accelerate_astc{linkage,
+#ifdef ANDROID
+                                                            AstcDecodeMode::Cpu,
+#else
                                                             AstcDecodeMode::Gpu,
+#endif
                                                             AstcDecodeMode::Cpu,
                                                             AstcDecodeMode::CpuAsynchronous,
                                                             "accelerate_astc",
@@ -304,7 +317,11 @@ struct Values {
         linkage, 0, "bg_blue", Category::Renderer, Specialization::Default, true, true};
 
     SwitchableSetting<GpuAccuracy, true> gpu_accuracy{linkage,
+#ifdef ANDROID
+                                                      GpuAccuracy::Normal,
+#else
                                                       GpuAccuracy::High,
+#endif
                                                       GpuAccuracy::Normal,
                                                       GpuAccuracy::Extreme,
                                                       "gpu_accuracy",
@@ -313,20 +330,38 @@ struct Values {
                                                       true,
                                                       true};
     GpuAccuracy current_gpu_accuracy{GpuAccuracy::High};
-    SwitchableSetting<AnisotropyMode, true> max_anisotropy{
-        linkage,          AnisotropyMode::Automatic, AnisotropyMode::Automatic, AnisotropyMode::X16,
-        "max_anisotropy", Category::RendererAdvanced};
+    SwitchableSetting<AnisotropyMode, true> max_anisotropy{linkage,
+#ifdef ANDROID
+                                                           AnisotropyMode::Default,
+#else
+                                                           AnisotropyMode::Automatic,
+#endif
+                                                           AnisotropyMode::Automatic,
+                                                           AnisotropyMode::X16,
+                                                           "max_anisotropy",
+                                                           Category::RendererAdvanced};
     SwitchableSetting<AstcRecompression, true> astc_recompression{linkage,
                                                                   AstcRecompression::Uncompressed,
                                                                   AstcRecompression::Uncompressed,
                                                                   AstcRecompression::Bc3,
                                                                   "astc_recompression",
                                                                   Category::RendererAdvanced};
-    SwitchableSetting<bool> async_presentation{linkage, false, "async_presentation",
-                                               Category::RendererAdvanced};
+    SwitchableSetting<bool> async_presentation{linkage,
+#ifdef ANDROID
+                                               true,
+#else
+                                               false,
+#endif
+                                               "async_presentation", Category::RendererAdvanced};
     SwitchableSetting<bool> renderer_force_max_clock{linkage, false, "force_max_clock",
                                                      Category::RendererAdvanced};
-    SwitchableSetting<bool> use_reactive_flushing{linkage, true, "use_reactive_flushing",
+    SwitchableSetting<bool> use_reactive_flushing{linkage,
+#ifdef ANDROID
+                                                  false,
+#else
+                                                  true,
+#endif
+                                                  "use_reactive_flushing",
                                                   Category::RendererAdvanced};
     SwitchableSetting<bool> use_asynchronous_shaders{linkage, false, "use_asynchronous_shaders",
                                                      Category::RendererAdvanced};
@@ -358,6 +393,8 @@ struct Values {
                                           Category::RendererDebug};
     // TODO: remove this once AMDVLK supports VK_EXT_depth_bias_control
     bool renderer_amdvlk_depth_bias_workaround{};
+    Setting<bool> disable_buffer_reorder{linkage, false, "disable_buffer_reorder",
+                                         Category::RendererDebug};
 
     // System
     SwitchableSetting<Language, true> language_index{linkage,
@@ -390,7 +427,11 @@ struct Values {
     Setting<s32> current_user{linkage, 0, "current_user", Category::System};
 
     SwitchableSetting<ConsoleMode> use_docked_mode{linkage,
+#ifdef ANDROID
+                                                   ConsoleMode::Handheld,
+#else
                                                    ConsoleMode::Docked,
+#endif
                                                    "use_docked_mode",
                                                    Category::System,
                                                    Specialization::Radio,
@@ -534,6 +575,8 @@ bool IsGPULevelExtreme();
 bool IsGPULevelHigh();
 
 bool IsFastmemEnabled();
+void SetNceEnabled(bool is_64bit);
+bool IsNceEnabled();
 
 bool IsDockedMode();
 

src/common/settings_enums.h

@@ -129,6 +129,8 @@ ENUM(ShaderBackend, Glsl, Glasm, SpirV);
 
 ENUM(GpuAccuracy, Normal, High, Extreme);
 
+ENUM(CpuBackend, Dynarmic, Nce);
+
 ENUM(CpuAccuracy, Auto, Accurate, Unsafe, Paranoid);
 
 ENUM(MemoryLayout, Memory_4Gb, Memory_6Gb, Memory_8Gb);

src/common/signal_chain.cpp

@@ -0,0 +1,42 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <dlfcn.h>
+
+#include "common/assert.h"
+#include "common/dynamic_library.h"
+#include "common/scope_exit.h"
+#include "common/signal_chain.h"
+
+namespace Common {
+
+template <typename T>
+T* LookupLibcSymbol(const char* name) {
+#if defined(__BIONIC__)
+    Common::DynamicLibrary provider("libc.so");
+    if (!provider.IsOpen()) {
+        UNREACHABLE_MSG("Failed to open libc!");
+    }
+#else
+    // For other operating environments, we assume the symbol is not overridden.
+    const char* base = nullptr;
+    Common::DynamicLibrary provider(base);
+#endif
+
+    void* sym = provider.GetSymbolAddress(name);
+    if (sym == nullptr) {
+        sym = dlsym(RTLD_DEFAULT, name);
+    }
+    if (sym == nullptr) {
+        UNREACHABLE_MSG("Unable to find symbol {}!", name);
+    }
+
+    return reinterpret_cast<T*>(sym);
+}
+
+int SigAction(int signum, const struct sigaction* act, struct sigaction* oldact) {
+    static auto libc_sigaction = LookupLibcSymbol<decltype(sigaction)>("sigaction");
+    return libc_sigaction(signum, act, oldact);
+}
+
+} // namespace Common

src/common/signal_chain.h

@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#ifndef _WIN32
+
+#include <signal.h>
+
+namespace Common {
+
+// Android's ART overrides sigaction with its own wrapper. This is problematic for SIGSEGV
+// in particular, because ART's handler accesses tpidr_el0, which conflicts with NCE.
+// This extracts the libc symbol and calls it directly.
+int SigAction(int signum, const struct sigaction* act, struct sigaction* oldact);
+
+} // namespace Common
+
+#endif

src/common/wall_clock.cpp

@@ -10,7 +10,7 @@
 #include "common/x64/rdtsc.h"
 #endif
 
-#if defined(ARCHITECTURE_arm64) && defined(__linux__)
+#ifdef HAS_NCE
 #include "common/arm64/native_clock.h"
 #endif
 
@@ -68,7 +68,7 @@ std::unique_ptr<WallClock> CreateOptimalClock() {
         // - Is not more precise than 1 GHz (1ns resolution)
         return std::make_unique<StandardWallClock>();
     }
-#elif defined(ARCHITECTURE_arm64) && defined(__linux__)
+#elif defined(HAS_NCE)
     return std::make_unique<Arm64::NativeClock>();
 #else
     return std::make_unique<StandardWallClock>();

src/core/CMakeLists.txt

@@ -529,6 +529,7 @@ add_library(core STATIC
     hle/service/hid/hid_server.h
     hle/service/hid/hid_system_server.cpp
     hle/service/hid/hid_system_server.h
+    hle/service/hid/hid_util.h
     hle/service/hid/hidbus.cpp
     hle/service/hid/hidbus.h
     hle/service/hid/irs.cpp
@@ -540,8 +541,8 @@ add_library(core STATIC
     hle/service/hid/xcd.cpp
     hle/service/hid/xcd.h
     hle/service/hid/errors.h
-    hle/service/hid/controllers/console_sixaxis.cpp
-    hle/service/hid/controllers/console_sixaxis.h
+    hle/service/hid/controllers/console_six_axis.cpp
+    hle/service/hid/controllers/console_six_axis.h
     hle/service/hid/controllers/controller_base.cpp
     hle/service/hid/controllers/controller_base.h
     hle/service/hid/controllers/debug_pad.cpp
@@ -556,6 +557,10 @@ add_library(core STATIC
     hle/service/hid/controllers/npad.h
     hle/service/hid/controllers/palma.cpp
     hle/service/hid/controllers/palma.h
+    hle/service/hid/controllers/seven_six_axis.cpp
+    hle/service/hid/controllers/seven_six_axis.h
+    hle/service/hid/controllers/six_axis.cpp
+    hle/service/hid/controllers/six_axis.h
     hle/service/hid/controllers/stubbed.cpp
     hle/service/hid/controllers/stubbed.h
     hle/service/hid/controllers/touchscreen.cpp
@@ -725,6 +730,7 @@ add_library(core STATIC
     hle/service/nvnflinger/producer_listener.h
     hle/service/nvnflinger/status.h
     hle/service/nvnflinger/ui/fence.h
+    hle/service/nvnflinger/ui/graphic_buffer.cpp
     hle/service/nvnflinger/ui/graphic_buffer.h
     hle/service/nvnflinger/window.h
     hle/service/olsc/olsc.cpp
@@ -920,6 +926,22 @@ if (ENABLE_WEB_SERVICE)
     target_link_libraries(core PRIVATE web_service)
 endif()
 
+if (HAS_NCE)
+    enable_language(C ASM)
+    set(CMAKE_ASM_FLAGS "${CFLAGS} -x assembler-with-cpp")
+
+    target_sources(core PRIVATE
+        arm/nce/arm_nce.cpp
+        arm/nce/arm_nce.h
+        arm/nce/arm_nce.s
+        arm/nce/guest_context.h
+        arm/nce/patch.cpp
+        arm/nce/patch.h
+        arm/nce/instructions.h
+    )
+    target_link_libraries(core PRIVATE merry::oaknut)
+endif()
+
 if (ARCHITECTURE_x86_64 OR ARCHITECTURE_arm64)
     target_sources(core PRIVATE
         arm/dynarmic/arm_dynarmic.h

src/core/arm/arm_interface.cpp

@@ -201,6 +201,8 @@ void ARM_Interface::Run() {
         if (True(hr & HaltReason::DataAbort)) {
             if (system.DebuggerEnabled()) {
                 system.GetDebugger().NotifyThreadWatchpoint(current_thread, *HaltedWatchpoint());
+            } else {
+                LogBacktrace();
             }
             current_thread->RequestSuspend(SuspendType::Debug);
             break;

src/core/arm/arm_interface.h

@@ -81,6 +81,9 @@ public:
     // thread context to be 800 bytes in size.
     static_assert(sizeof(ThreadContext64) == 0x320);
 
+    /// Perform any backend-specific initialization.
+    virtual void Initialize() {}
+
     /// Runs the CPU until an event happens
     void Run();
 

src/core/arm/nce/arm_nce.cpp

@@ -0,0 +1,400 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <cinttypes>
+#include <memory>
+
+#include "common/signal_chain.h"
+#include "core/arm/nce/arm_nce.h"
+#include "core/arm/nce/patch.h"
+#include "core/core.h"
+#include "core/memory.h"
+
+#include "core/hle/kernel/k_process.h"
+
+#include <signal.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+namespace Core {
+
+namespace {
+
+struct sigaction g_orig_action;
+
+// Verify assembly offsets.
+using NativeExecutionParameters = Kernel::KThread::NativeExecutionParameters;
+static_assert(offsetof(NativeExecutionParameters, native_context) == TpidrEl0NativeContext);
+static_assert(offsetof(NativeExecutionParameters, lock) == TpidrEl0Lock);
+static_assert(offsetof(NativeExecutionParameters, magic) == TpidrEl0TlsMagic);
+
+fpsimd_context* GetFloatingPointState(mcontext_t& host_ctx) {
+    _aarch64_ctx* header = reinterpret_cast<_aarch64_ctx*>(&host_ctx.__reserved);
+    while (header->magic != FPSIMD_MAGIC) {
+        header = reinterpret_cast<_aarch64_ctx*>(reinterpret_cast<char*>(header) + header->size);
+    }
+    return reinterpret_cast<fpsimd_context*>(header);
+}
+
+} // namespace
+
+void* ARM_NCE::RestoreGuestContext(void* raw_context) {
+    // Retrieve the host context.
+    auto& host_ctx = static_cast<ucontext_t*>(raw_context)->uc_mcontext;
+
+    // Thread-local parameters will be located in x9.
+    auto* tpidr = reinterpret_cast<NativeExecutionParameters*>(host_ctx.regs[9]);
+    auto* guest_ctx = static_cast<GuestContext*>(tpidr->native_context);
+
+    // Retrieve the host floating point state.
+    auto* fpctx = GetFloatingPointState(host_ctx);
+
+    // Save host callee-saved registers.
+    std::memcpy(guest_ctx->host_ctx.host_saved_vregs.data(), &fpctx->vregs[8],
+                sizeof(guest_ctx->host_ctx.host_saved_vregs));
+    std::memcpy(guest_ctx->host_ctx.host_saved_regs.data(), &host_ctx.regs[19],
+                sizeof(guest_ctx->host_ctx.host_saved_regs));
+
+    // Save stack pointer.
+    guest_ctx->host_ctx.host_sp = host_ctx.sp;
+
+    // Restore all guest state except tpidr_el0.
+    host_ctx.sp = guest_ctx->sp;
+    host_ctx.pc = guest_ctx->pc;
+    host_ctx.pstate = guest_ctx->pstate;
+    fpctx->fpcr = guest_ctx->fpcr;
+    fpctx->fpsr = guest_ctx->fpsr;
+    std::memcpy(host_ctx.regs, guest_ctx->cpu_registers.data(), sizeof(host_ctx.regs));
+    std::memcpy(fpctx->vregs, guest_ctx->vector_registers.data(), sizeof(fpctx->vregs));
+
+    // Return the new thread-local storage pointer.
+    return tpidr;
+}
+
+void ARM_NCE::SaveGuestContext(GuestContext* guest_ctx, void* raw_context) {
+    // Retrieve the host context.
+    auto& host_ctx = static_cast<ucontext_t*>(raw_context)->uc_mcontext;
+
+    // Retrieve the host floating point state.
+    auto* fpctx = GetFloatingPointState(host_ctx);
+
+    // Save all guest registers except tpidr_el0.
+    std::memcpy(guest_ctx->cpu_registers.data(), host_ctx.regs, sizeof(host_ctx.regs));
+    std::memcpy(guest_ctx->vector_registers.data(), fpctx->vregs, sizeof(fpctx->vregs));
+    guest_ctx->fpsr = fpctx->fpsr;
+    guest_ctx->fpcr = fpctx->fpcr;
+    guest_ctx->pstate = static_cast<u32>(host_ctx.pstate);
+    guest_ctx->pc = host_ctx.pc;
+    guest_ctx->sp = host_ctx.sp;
+
+    // Restore stack pointer.
+    host_ctx.sp = guest_ctx->host_ctx.host_sp;
+
+    // Restore host callee-saved registers.
+    std::memcpy(&host_ctx.regs[19], guest_ctx->host_ctx.host_saved_regs.data(),
+                sizeof(guest_ctx->host_ctx.host_saved_regs));
+    std::memcpy(&fpctx->vregs[8], guest_ctx->host_ctx.host_saved_vregs.data(),
+                sizeof(guest_ctx->host_ctx.host_saved_vregs));
+
+    // Return from the call on exit by setting pc to x30.
+    host_ctx.pc = guest_ctx->host_ctx.host_saved_regs[11];
+
+    // Clear esr_el1 and return it.
+    host_ctx.regs[0] = guest_ctx->esr_el1.exchange(0);
+}
+
+bool ARM_NCE::HandleGuestFault(GuestContext* guest_ctx, void* raw_info, void* raw_context) {
+    auto& host_ctx = static_cast<ucontext_t*>(raw_context)->uc_mcontext;
+    auto* info = static_cast<siginfo_t*>(raw_info);
+
+    // Try to handle an invalid access.
+    // TODO: handle accesses which split a page?
+    const Common::ProcessAddress addr =
+        (reinterpret_cast<u64>(info->si_addr) & ~Memory::YUZU_PAGEMASK);
+    if (guest_ctx->system->ApplicationMemory().InvalidateNCE(addr, Memory::YUZU_PAGESIZE)) {
+        // We handled the access successfully and are returning to guest code.
+        return true;
+    }
+
+    // We can't handle the access, so determine why we crashed.
+    const bool is_prefetch_abort = host_ctx.pc == reinterpret_cast<u64>(info->si_addr);
+
+    // For data aborts, skip the instruction and return to guest code.
+    // This will allow games to continue in many scenarios where they would otherwise crash.
+    if (!is_prefetch_abort) {
+        host_ctx.pc += 4;
+        return true;
+    }
+
+    // This is a prefetch abort.
+    guest_ctx->esr_el1.fetch_or(static_cast<u64>(HaltReason::PrefetchAbort));
+
+    // Forcibly mark the context as locked. We are still running.
+    // We may race with SignalInterrupt here:
+    // - If we lose the race, then SignalInterrupt will send us a signal we are masking,
+    //   and it will do nothing when it is unmasked, as we have already left guest code.
+    // - If we win the race, then SignalInterrupt will wait for us to unlock first.
+    auto& thread_params = guest_ctx->parent->running_thread->GetNativeExecutionParameters();
+    thread_params.lock.store(SpinLockLocked);
+
+    // Return to host.
+    SaveGuestContext(guest_ctx, raw_context);
+    return false;
+}
+
+void ARM_NCE::HandleHostFault(int sig, void* raw_info, void* raw_context) {
+    return g_orig_action.sa_sigaction(sig, static_cast<siginfo_t*>(raw_info), raw_context);
+}
+
+HaltReason ARM_NCE::RunJit() {
+    // Get the thread parameters.
+    // TODO: pass the current thread down from ::Run
+    auto* thread = Kernel::GetCurrentThreadPointer(system.Kernel());
+    auto* thread_params = &thread->GetNativeExecutionParameters();
+
+    {
+        // Lock our core context.
+        std::scoped_lock lk{lock};
+
+        // We should not be running.
+        ASSERT(running_thread == nullptr);
+
+        // Check if we need to run. If we have already been halted, we are done.
+        u64 halt = guest_ctx.esr_el1.exchange(0);
+        if (halt != 0) {
+            return static_cast<HaltReason>(halt);
+        }
+
+        // Mark that we are running.
+        running_thread = thread;
+
+        // Acquire the lock on the thread parameters.
+        // This allows us to force synchronization with SignalInterrupt.
+        LockThreadParameters(thread_params);
+    }
+
+    // Assign current members.
+    guest_ctx.parent = this;
+    thread_params->native_context = &guest_ctx;
+    thread_params->tpidr_el0 = guest_ctx.tpidr_el0;
+    thread_params->tpidrro_el0 = guest_ctx.tpidrro_el0;
+    thread_params->is_running = true;
+
+    HaltReason halt{};
+
+    // TODO: finding and creating the post handler needs to be locked
+    // to deal with dynamic loading of NROs.
+    const auto& post_handlers = system.ApplicationProcess()->GetPostHandlers();
+    if (auto it = post_handlers.find(guest_ctx.pc); it != post_handlers.end()) {
+        halt = ReturnToRunCodeByTrampoline(thread_params, &guest_ctx, it->second);
+    } else {
+        halt = ReturnToRunCodeByExceptionLevelChange(thread_id, thread_params);
+    }
+
+    // Unload members.
+    // The thread does not change, so we can persist the old reference.
+    guest_ctx.tpidr_el0 = thread_params->tpidr_el0;
+    thread_params->native_context = nullptr;
+    thread_params->is_running = false;
+
+    // Unlock the thread parameters.
+    UnlockThreadParameters(thread_params);
+
+    {
+        // Lock the core context.
+        std::scoped_lock lk{lock};
+
+        // On exit, we no longer have an active thread.
+        running_thread = nullptr;
+    }
+
+    // Return the halt reason.
+    return halt;
+}
+
+HaltReason ARM_NCE::StepJit() {
+    return HaltReason::StepThread;
+}
+
+u32 ARM_NCE::GetSvcNumber() const {
+    return guest_ctx.svc_swi;
+}
+
+ARM_NCE::ARM_NCE(System& system_, bool uses_wall_clock_, std::size_t core_index_)
+    : ARM_Interface{system_, uses_wall_clock_}, core_index{core_index_} {
+    guest_ctx.system = &system_;
+}
+
+ARM_NCE::~ARM_NCE() = default;
+
+void ARM_NCE::Initialize() {
+    thread_id = gettid();
+
+    // Setup our signals
+    static std::once_flag flag;
+    std::call_once(flag, [] {
+        using HandlerType = decltype(sigaction::sa_sigaction);
+
+        sigset_t signal_mask;
+        sigemptyset(&signal_mask);
+        sigaddset(&signal_mask, ReturnToRunCodeByExceptionLevelChangeSignal);
+        sigaddset(&signal_mask, BreakFromRunCodeSignal);
+        sigaddset(&signal_mask, GuestFaultSignal);
+
+        struct sigaction return_to_run_code_action {};
+        return_to_run_code_action.sa_flags = SA_SIGINFO | SA_ONSTACK;
+        return_to_run_code_action.sa_sigaction = reinterpret_cast<HandlerType>(
+            &ARM_NCE::ReturnToRunCodeByExceptionLevelChangeSignalHandler);
+        return_to_run_code_action.sa_mask = signal_mask;
+        Common::SigAction(ReturnToRunCodeByExceptionLevelChangeSignal, &return_to_run_code_action,
+                          nullptr);
+
+        struct sigaction break_from_run_code_action {};
+        break_from_run_code_action.sa_flags = SA_SIGINFO | SA_ONSTACK;
+        break_from_run_code_action.sa_sigaction =
+            reinterpret_cast<HandlerType>(&ARM_NCE::BreakFromRunCodeSignalHandler);
+        break_from_run_code_action.sa_mask = signal_mask;
+        Common::SigAction(BreakFromRunCodeSignal, &break_from_run_code_action, nullptr);
+
+        struct sigaction fault_action {};
+        fault_action.sa_flags = SA_SIGINFO | SA_ONSTACK | SA_RESTART;
+        fault_action.sa_sigaction =
+            reinterpret_cast<HandlerType>(&ARM_NCE::GuestFaultSignalHandler);
+        fault_action.sa_mask = signal_mask;
+        Common::SigAction(GuestFaultSignal, &fault_action, &g_orig_action);
+
+        // Simplify call for g_orig_action.
+        // These fields occupy the same space in memory, so this should be a no-op in practice.
+        if (!(g_orig_action.sa_flags & SA_SIGINFO)) {
+            g_orig_action.sa_sigaction =
+                reinterpret_cast<decltype(g_orig_action.sa_sigaction)>(g_orig_action.sa_handler);
+        }
+    });
+}
+
+void ARM_NCE::SetPC(u64 pc) {
+    guest_ctx.pc = pc;
+}
+
+u64 ARM_NCE::GetPC() const {
+    return guest_ctx.pc;
+}
+
+u64 ARM_NCE::GetSP() const {
+    return guest_ctx.sp;
+}
+
+u64 ARM_NCE::GetReg(int index) const {
+    return guest_ctx.cpu_registers[index];
+}
+
+void ARM_NCE::SetReg(int index, u64 value) {
+    guest_ctx.cpu_registers[index] = value;
+}
+
+u128 ARM_NCE::GetVectorReg(int index) const {
+    return guest_ctx.vector_registers[index];
+}
+
+void ARM_NCE::SetVectorReg(int index, u128 value) {
+    guest_ctx.vector_registers[index] = value;
+}
+
+u32 ARM_NCE::GetPSTATE() const {
+    return guest_ctx.pstate;
+}
+
+void ARM_NCE::SetPSTATE(u32 pstate) {
+    guest_ctx.pstate = pstate;
+}
+
+u64 ARM_NCE::GetTlsAddress() const {
+    return guest_ctx.tpidrro_el0;
+}
+
+void ARM_NCE::SetTlsAddress(u64 address) {
+    guest_ctx.tpidrro_el0 = address;
+}
+
+u64 ARM_NCE::GetTPIDR_EL0() const {
+    return guest_ctx.tpidr_el0;
+}
+
+void ARM_NCE::SetTPIDR_EL0(u64 value) {
+    guest_ctx.tpidr_el0 = value;
+}
+
+void ARM_NCE::SaveContext(ThreadContext64& ctx) const {
+    ctx.cpu_registers = guest_ctx.cpu_registers;
+    ctx.sp = guest_ctx.sp;
+    ctx.pc = guest_ctx.pc;
+    ctx.pstate = guest_ctx.pstate;
+    ctx.vector_registers = guest_ctx.vector_registers;
+    ctx.fpcr = guest_ctx.fpcr;
+    ctx.fpsr = guest_ctx.fpsr;
+    ctx.tpidr = guest_ctx.tpidr_el0;
+}
+
+void ARM_NCE::LoadContext(const ThreadContext64& ctx) {
+    guest_ctx.cpu_registers = ctx.cpu_registers;
+    guest_ctx.sp = ctx.sp;
+    guest_ctx.pc = ctx.pc;
+    guest_ctx.pstate = ctx.pstate;
+    guest_ctx.vector_registers = ctx.vector_registers;
+    guest_ctx.fpcr = ctx.fpcr;
+    guest_ctx.fpsr = ctx.fpsr;
+    guest_ctx.tpidr_el0 = ctx.tpidr;
+}
+
+void ARM_NCE::SignalInterrupt() {
+    // Lock core context.
+    std::scoped_lock lk{lock};
+
+    // Add break loop condition.
+    guest_ctx.esr_el1.fetch_or(static_cast<u64>(HaltReason::BreakLoop));
+
+    // If there is no thread running, we are done.
+    if (running_thread == nullptr) {
+        return;
+    }
+
+    // Lock the thread context.
+    auto* params = &running_thread->GetNativeExecutionParameters();
+    LockThreadParameters(params);
+
+    if (params->is_running) {
+        // We should signal to the running thread.
+        // The running thread will unlock the thread context.
+        syscall(SYS_tkill, thread_id, BreakFromRunCodeSignal);
+    } else {
+        // If the thread is no longer running, we have nothing to do.
+        UnlockThreadParameters(params);
+    }
+}
+
+void ARM_NCE::ClearInterrupt() {
+    guest_ctx.esr_el1 = {};
+}
+
+void ARM_NCE::ClearInstructionCache() {
+    // TODO: This is not possible to implement correctly on Linux because
+    // we do not have any access to ic iallu.
+
+    // Require accesses to complete.
+    std::atomic_thread_fence(std::memory_order_seq_cst);
+}
+
+void ARM_NCE::InvalidateCacheRange(u64 addr, std::size_t size) {
+    this->ClearInstructionCache();
+}
+
+void ARM_NCE::ClearExclusiveState() {
+    // No-op.
+}
+
+void ARM_NCE::PageTableChanged(Common::PageTable& page_table,
+                               std::size_t new_address_space_size_in_bits) {
+    // No-op. Page table is never used.
+}
+
+} // namespace Core

src/core/arm/nce/arm_nce.h

@@ -0,0 +1,108 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+#include <memory>
+#include <span>
+#include <unordered_map>
+#include <vector>
+
+#include "core/arm/arm_interface.h"
+#include "core/arm/nce/guest_context.h"
+
+namespace Core::Memory {
+class Memory;
+}
+
+namespace Core {
+
+class System;
+
+class ARM_NCE final : public ARM_Interface {
+public:
+    ARM_NCE(System& system_, bool uses_wall_clock_, std::size_t core_index_);
+
+    ~ARM_NCE() override;
+
+    void Initialize() override;
+    void SetPC(u64 pc) override;
+    u64 GetPC() const override;
+    u64 GetSP() const override;
+    u64 GetReg(int index) const override;
+    void SetReg(int index, u64 value) override;
+    u128 GetVectorReg(int index) const override;
+    void SetVectorReg(int index, u128 value) override;
+
+    u32 GetPSTATE() const override;
+    void SetPSTATE(u32 pstate) override;
+    u64 GetTlsAddress() const override;
+    void SetTlsAddress(u64 address) override;
+    void SetTPIDR_EL0(u64 value) override;
+    u64 GetTPIDR_EL0() const override;
+
+    Architecture GetArchitecture() const override {
+        return Architecture::Aarch64;
+    }
+
+    void SaveContext(ThreadContext32& ctx) const override {}
+    void SaveContext(ThreadContext64& ctx) const override;
+    void LoadContext(const ThreadContext32& ctx) override {}
+    void LoadContext(const ThreadContext64& ctx) override;
+
+    void SignalInterrupt() override;
+    void ClearInterrupt() override;
+    void ClearExclusiveState() override;
+    void ClearInstructionCache() override;
+    void InvalidateCacheRange(u64 addr, std::size_t size) override;
+    void PageTableChanged(Common::PageTable& new_page_table,
+                          std::size_t new_address_space_size_in_bits) override;
+
+protected:
+    HaltReason RunJit() override;
+    HaltReason StepJit() override;
+
+    u32 GetSvcNumber() const override;
+
+    const Kernel::DebugWatchpoint* HaltedWatchpoint() const override {
+        return nullptr;
+    }
+
+    void RewindBreakpointInstruction() override {}
+
+private:
+    // Assembly definitions.
+    static HaltReason ReturnToRunCodeByTrampoline(void* tpidr, GuestContext* ctx,
+                                                  u64 trampoline_addr);
+    static HaltReason ReturnToRunCodeByExceptionLevelChange(int tid, void* tpidr);
+
+    static void ReturnToRunCodeByExceptionLevelChangeSignalHandler(int sig, void* info,
+                                                                   void* raw_context);
+    static void BreakFromRunCodeSignalHandler(int sig, void* info, void* raw_context);
+    static void GuestFaultSignalHandler(int sig, void* info, void* raw_context);
+
+    static void LockThreadParameters(void* tpidr);
+    static void UnlockThreadParameters(void* tpidr);
+
+private:
+    // C++ implementation functions for assembly definitions.
+    static void* RestoreGuestContext(void* raw_context);
+    static void SaveGuestContext(GuestContext* ctx, void* raw_context);
+    static bool HandleGuestFault(GuestContext* ctx, void* info, void* raw_context);
+    static void HandleHostFault(int sig, void* info, void* raw_context);
+
+public:
+    // Members set on initialization.
+    std::size_t core_index{};
+    pid_t thread_id{-1};
+
+    // Core context.
+    GuestContext guest_ctx;
+
+    // Thread and invalidation info.
+    std::mutex lock;
+    Kernel::KThread* running_thread{};
+};
+
+} // namespace Core

src/core/arm/nce/arm_nce.s

@@ -0,0 +1,222 @@
+/* SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include "core/arm/nce/arm_nce_asm_definitions.h"
+
+#define LOAD_IMMEDIATE_32(reg, val)                     \
+    mov     reg, #(((val) >> 0x00) & 0xFFFF);           \
+    movk    reg, #(((val) >> 0x10) & 0xFFFF), lsl #16
+
+
+/* static HaltReason Core::ARM_NCE::ReturnToRunCodeByTrampoline(void* tpidr, Core::GuestContext* ctx, u64 trampoline_addr) */
+.section    .text._ZN4Core7ARM_NCE27ReturnToRunCodeByTrampolineEPvPNS_12GuestContextEm, "ax", %progbits
+.global     _ZN4Core7ARM_NCE27ReturnToRunCodeByTrampolineEPvPNS_12GuestContextEm
+.type       _ZN4Core7ARM_NCE27ReturnToRunCodeByTrampolineEPvPNS_12GuestContextEm, %function
+_ZN4Core7ARM_NCE27ReturnToRunCodeByTrampolineEPvPNS_12GuestContextEm:
+    /* Back up host sp to x3. */
+    /* Back up host tpidr_el0 to x4. */
+    mov     x3, sp
+    mrs     x4, tpidr_el0
+
+    /* Load guest sp. x5 is used as a scratch register. */
+    ldr     x5, [x1, #(GuestContextSp)]
+    mov     sp, x5
+
+    /* Offset GuestContext pointer to the host member. */
+    add     x5, x1, #(GuestContextHostContext)
+
+    /* Save original host sp and tpidr_el0 (x3, x4) to host context. */
+    stp     x3, x4, [x5, #(HostContextSpTpidrEl0)]
+
+    /* Save all callee-saved host GPRs. */
+    stp     x19, x20, [x5, #(HostContextRegs+0x0)]
+    stp     x21, x22, [x5, #(HostContextRegs+0x10)]
+    stp     x23, x24, [x5, #(HostContextRegs+0x20)]
+    stp     x25, x26, [x5, #(HostContextRegs+0x30)]
+    stp     x27, x28, [x5, #(HostContextRegs+0x40)]
+    stp     x29, x30, [x5, #(HostContextRegs+0x50)]
+
+    /* Save all callee-saved host FPRs. */
+    stp     q8, q9,   [x5, #(HostContextVregs+0x0)]
+    stp     q10, q11, [x5, #(HostContextVregs+0x20)]
+    stp     q12, q13, [x5, #(HostContextVregs+0x40)]
+    stp     q14, q15, [x5, #(HostContextVregs+0x60)]
+
+    /* Load guest tpidr_el0 from argument. */
+    msr     tpidr_el0, x0
+
+    /* Tail call the trampoline to restore guest state. */
+    br      x2
+
+
+/* static HaltReason Core::ARM_NCE::ReturnToRunCodeByExceptionLevelChange(int tid, void* tpidr) */
+.section    .text._ZN4Core7ARM_NCE37ReturnToRunCodeByExceptionLevelChangeEiPv, "ax", %progbits
+.global     _ZN4Core7ARM_NCE37ReturnToRunCodeByExceptionLevelChangeEiPv
+.type       _ZN4Core7ARM_NCE37ReturnToRunCodeByExceptionLevelChangeEiPv, %function
+_ZN4Core7ARM_NCE37ReturnToRunCodeByExceptionLevelChangeEiPv:
+    /* This jumps to the signal handler, which will restore the entire context. */
+    /* On entry, x0 = thread id, which is already in the right place. */
+
+    /* Move tpidr to x9 so it is not trampled. */
+    mov     x9, x1
+
+    /* Set up arguments. */
+    mov     x8, #(__NR_tkill)
+    mov     x1, #(ReturnToRunCodeByExceptionLevelChangeSignal)
+
+    /* Tail call the signal handler. */
+    svc     #0
+
+    /* Block execution from flowing here. */
+    brk     #1000
+
+
+/* static void Core::ARM_NCE::ReturnToRunCodeByExceptionLevelChangeSignalHandler(int sig, void* info, void* raw_context) */
+.section    .text._ZN4Core7ARM_NCE50ReturnToRunCodeByExceptionLevelChangeSignalHandlerEiPvS1_, "ax", %progbits
+.global     _ZN4Core7ARM_NCE50ReturnToRunCodeByExceptionLevelChangeSignalHandlerEiPvS1_
+.type       _ZN4Core7ARM_NCE50ReturnToRunCodeByExceptionLevelChangeSignalHandlerEiPvS1_, %function
+_ZN4Core7ARM_NCE50ReturnToRunCodeByExceptionLevelChangeSignalHandlerEiPvS1_:
+    stp     x29, x30, [sp, #-0x10]!
+    mov     x29, sp
+
+    /* Call the context restorer with the raw context. */
+    mov     x0, x2
+    bl      _ZN4Core7ARM_NCE19RestoreGuestContextEPv
+
+    /* Save the old value of tpidr_el0. */
+    mrs     x8, tpidr_el0
+    ldr     x9, [x0, #(TpidrEl0NativeContext)]
+    str     x8, [x9, #(GuestContextHostContext + HostContextTpidrEl0)]
+
+    /* Set our new tpidr_el0. */
+    msr     tpidr_el0, x0
+
+    /* Unlock the context. */
+    bl      _ZN4Core7ARM_NCE22UnlockThreadParametersEPv
+
+    /* Returning from here will enter the guest. */
+    ldp     x29, x30, [sp], #0x10
+    ret
+
+
+/* static void Core::ARM_NCE::BreakFromRunCodeSignalHandler(int sig, void* info, void* raw_context) */
+.section    .text._ZN4Core7ARM_NCE29BreakFromRunCodeSignalHandlerEiPvS1_, "ax", %progbits
+.global     _ZN4Core7ARM_NCE29BreakFromRunCodeSignalHandlerEiPvS1_
+.type       _ZN4Core7ARM_NCE29BreakFromRunCodeSignalHandlerEiPvS1_, %function
+_ZN4Core7ARM_NCE29BreakFromRunCodeSignalHandlerEiPvS1_:
+    /* Check to see if we have the correct TLS magic. */
+    mrs     x8, tpidr_el0
+    ldr     w9, [x8, #(TpidrEl0TlsMagic)]
+
+    LOAD_IMMEDIATE_32(w10, TlsMagic)
+
+    cmp     w9, w10
+    b.ne    1f
+
+    /* Correct TLS magic, so this is a guest interrupt. */
+    /* Restore host tpidr_el0. */
+    ldr     x0, [x8, #(TpidrEl0NativeContext)]
+    ldr     x3, [x0, #(GuestContextHostContext + HostContextTpidrEl0)]
+    msr     tpidr_el0, x3
+
+    /* Tail call the restorer. */
+    mov     x1, x2
+    b       _ZN4Core7ARM_NCE16SaveGuestContextEPNS_12GuestContextEPv
+
+    /* Returning from here will enter host code. */
+
+1:
+    /* Incorrect TLS magic, so this is a spurious signal. */
+    ret
+
+
+/* static void Core::ARM_NCE::GuestFaultSignalHandler(int sig, void* info, void* raw_context) */
+.section    .text._ZN4Core7ARM_NCE23GuestFaultSignalHandlerEiPvS1_, "ax", %progbits
+.global     _ZN4Core7ARM_NCE23GuestFaultSignalHandlerEiPvS1_
+.type       _ZN4Core7ARM_NCE23GuestFaultSignalHandlerEiPvS1_, %function
+_ZN4Core7ARM_NCE23GuestFaultSignalHandlerEiPvS1_:
+    /* Check to see if we have the correct TLS magic. */
+    mrs     x8, tpidr_el0
+    ldr     w9, [x8, #(TpidrEl0TlsMagic)]
+
+    LOAD_IMMEDIATE_32(w10, TlsMagic)
+
+    cmp     w9, w10
+    b.eq    1f
+
+    /* Incorrect TLS magic, so this is a host fault. */
+    /* Tail call the handler. */
+    b       _ZN4Core7ARM_NCE15HandleHostFaultEiPvS1_
+
+1:
+    /* Correct TLS magic, so this is a guest fault. */
+    stp     x29, x30, [sp, #-0x20]!
+    str     x19, [sp, #0x10]
+    mov     x29, sp
+
+    /* Save the old tpidr_el0. */
+    mov     x19, x8
+
+    /* Restore host tpidr_el0. */
+    ldr     x0, [x8, #(TpidrEl0NativeContext)]
+    ldr     x3, [x0, #(GuestContextHostContext + HostContextTpidrEl0)]
+    msr     tpidr_el0, x3
+
+    /* Call the handler. */
+    bl       _ZN4Core7ARM_NCE16HandleGuestFaultEPNS_12GuestContextEPvS3_
+
+    /* If the handler returned false, we want to preserve the host tpidr_el0. */
+    cbz     x0, 2f
+
+    /* Otherwise, restore guest tpidr_el0. */
+    msr     tpidr_el0, x19
+
+2:
+    ldr     x19, [sp, #0x10]
+    ldp     x29, x30, [sp], #0x20
+    ret
+
+
+/* static void Core::ARM_NCE::LockThreadParameters(void* tpidr) */
+.section    .text._ZN4Core7ARM_NCE20LockThreadParametersEPv, "ax", %progbits
+.global     _ZN4Core7ARM_NCE20LockThreadParametersEPv
+.type       _ZN4Core7ARM_NCE20LockThreadParametersEPv, %function
+_ZN4Core7ARM_NCE20LockThreadParametersEPv:
+    /* Offset to lock member. */
+    add     x0, x0, #(TpidrEl0Lock)
+
+1:
+    /* Clear the monitor. */
+    clrex
+
+2:
+    /* Load-linked with acquire ordering. */
+    ldaxr   w1, [x0]
+
+    /* If the value was SpinLockLocked, clear monitor and retry. */
+    cbz     w1, 1b
+
+    /* Store-conditional SpinLockLocked with relaxed ordering. */
+    stxr    w1, wzr, [x0]
+
+    /* If we failed to store, retry. */
+    cbnz    w1, 2b
+
+    ret
+
+
+/* static void Core::ARM_NCE::UnlockThreadParameters(void* tpidr) */
+.section    .text._ZN4Core7ARM_NCE22UnlockThreadParametersEPv, "ax", %progbits
+.global     _ZN4Core7ARM_NCE22UnlockThreadParametersEPv
+.type       _ZN4Core7ARM_NCE22UnlockThreadParametersEPv, %function
+_ZN4Core7ARM_NCE22UnlockThreadParametersEPv:
+    /* Offset to lock member. */
+    add     x0, x0, #(TpidrEl0Lock)
+
+    /* Load SpinLockUnlocked. */
+    mov     w1, #(SpinLockUnlocked)
+
+    /* Store value with release ordering. */
+    stlr    w1, [x0]
+
+    ret

src/core/arm/nce/arm_nce_asm_definitions.h

@@ -0,0 +1,29 @@
+/* SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#pragma once
+
+#define __ASSEMBLY__
+
+#include <asm-generic/signal.h>
+#include <asm-generic/unistd.h>
+
+#define ReturnToRunCodeByExceptionLevelChangeSignal SIGUSR2
+#define BreakFromRunCodeSignal SIGURG
+#define GuestFaultSignal SIGSEGV
+
+#define GuestContextSp 0xF8
+#define GuestContextHostContext 0x320
+
+#define HostContextSpTpidrEl0 0xE0
+#define HostContextTpidrEl0 0xE8
+#define HostContextRegs 0x0
+#define HostContextVregs 0x60
+
+#define TpidrEl0NativeContext 0x10
+#define TpidrEl0Lock 0x18
+#define TpidrEl0TlsMagic 0x20
+#define TlsMagic 0x555a5559
+
+#define SpinLockLocked 0
+#define SpinLockUnlocked 1

src/core/arm/nce/guest_context.h

@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "core/arm/arm_interface.h"
+#include "core/arm/nce/arm_nce_asm_definitions.h"
+
+namespace Core {
+
+class ARM_NCE;
+class System;
+
+struct HostContext {
+    alignas(16) std::array<u64, 12> host_saved_regs{};
+    alignas(16) std::array<u128, 8> host_saved_vregs{};
+    u64 host_sp{};
+    void* host_tpidr_el0{};
+};
+
+struct GuestContext {
+    std::array<u64, 31> cpu_registers{};
+    u64 sp{};
+    u64 pc{};
+    u32 fpcr{};
+    u32 fpsr{};
+    std::array<u128, 32> vector_registers{};
+    u32 pstate{};
+    alignas(16) HostContext host_ctx{};
+    u64 tpidrro_el0{};
+    u64 tpidr_el0{};
+    std::atomic<u64> esr_el1{};
+    u32 nzcv{};
+    u32 svc_swi{};
+    System* system{};
+    ARM_NCE* parent{};
+};
+
+// Verify assembly offsets.
+static_assert(offsetof(GuestContext, sp) == GuestContextSp);
+static_assert(offsetof(GuestContext, host_ctx) == GuestContextHostContext);
+static_assert(offsetof(HostContext, host_sp) == HostContextSpTpidrEl0);
+static_assert(offsetof(HostContext, host_tpidr_el0) - 8 == HostContextSpTpidrEl0);
+static_assert(offsetof(HostContext, host_tpidr_el0) == HostContextTpidrEl0);
+static_assert(offsetof(HostContext, host_saved_regs) == HostContextRegs);
+static_assert(offsetof(HostContext, host_saved_vregs) == HostContextVregs);
+
+} // namespace Core

src/core/arm/nce/instructions.h

@@ -0,0 +1,147 @@
+// SPDX-FileCopyrightText: Copyright © 2020 Skyline Team and Contributors
+// SPDX-License-Identifier: MPL-2.0
+
+#include "common/bit_field.h"
+#include "common/common_types.h"
+
+namespace Core::NCE {
+
+enum SystemRegister : u32 {
+    TpidrEl0 = 0x5E82,
+    TpidrroEl0 = 0x5E83,
+    CntfrqEl0 = 0x5F00,
+    CntpctEl0 = 0x5F01,
+};
+
+// https://developer.arm.com/documentation/ddi0596/2021-12/Base-Instructions/SVC--Supervisor-Call-
+union SVC {
+    constexpr explicit SVC(u32 raw_) : raw{raw_} {}
+
+    constexpr bool Verify() {
+        return (this->GetSig0() == 0x1 && this->GetSig1() == 0x6A0);
+    }
+
+    constexpr u32 GetSig0() {
+        return decltype(sig0)::ExtractValue(raw);
+    }
+
+    constexpr u32 GetValue() {
+        return decltype(value)::ExtractValue(raw);
+    }
+
+    constexpr u32 GetSig1() {
+        return decltype(sig1)::ExtractValue(raw);
+    }
+
+    u32 raw;
+
+private:
+    BitField<0, 5, u32> sig0;   // 0x1
+    BitField<5, 16, u32> value; // 16-bit immediate
+    BitField<21, 11, u32> sig1; // 0x6A0
+};
+static_assert(sizeof(SVC) == sizeof(u32));
+static_assert(SVC(0xD40000C1).Verify());
+static_assert(SVC(0xD40000C1).GetValue() == 0x6);
+
+// https://developer.arm.com/documentation/ddi0596/2021-12/Base-Instructions/MRS--Move-System-Register-
+union MRS {
+    constexpr explicit MRS(u32 raw_) : raw{raw_} {}
+
+    constexpr bool Verify() {
+        return (this->GetSig() == 0xD53);
+    }
+
+    constexpr u32 GetRt() {
+        return decltype(rt)::ExtractValue(raw);
+    }
+
+    constexpr u32 GetSystemReg() {
+        return decltype(system_reg)::ExtractValue(raw);
+    }
+
+    constexpr u32 GetSig() {
+        return decltype(sig)::ExtractValue(raw);
+    }
+
+    u32 raw;
+
+private:
+    BitField<0, 5, u32> rt;          // destination register
+    BitField<5, 15, u32> system_reg; // source system register
+    BitField<20, 12, u32> sig;       // 0xD53
+};
+static_assert(sizeof(MRS) == sizeof(u32));
+static_assert(MRS(0xD53BE020).Verify());
+static_assert(MRS(0xD53BE020).GetSystemReg() == CntpctEl0);
+static_assert(MRS(0xD53BE020).GetRt() == 0x0);
+
+// https://developer.arm.com/documentation/ddi0596/2021-12/Base-Instructions/MSR--register---Move-general-purpose-register-to-System-Register-
+union MSR {
+    constexpr explicit MSR(u32 raw_) : raw{raw_} {}
+
+    constexpr bool Verify() {
+        return this->GetSig() == 0xD51;
+    }
+
+    constexpr u32 GetRt() {
+        return decltype(rt)::ExtractValue(raw);
+    }
+
+    constexpr u32 GetSystemReg() {
+        return decltype(system_reg)::ExtractValue(raw);
+    }
+
+    constexpr u32 GetSig() {
+        return decltype(sig)::ExtractValue(raw);
+    }
+
+    u32 raw;
+
+private:
+    BitField<0, 5, u32> rt;          // source register
+    BitField<5, 15, u32> system_reg; // destination system register
+    BitField<20, 12, u32> sig;       // 0xD51
+};
+static_assert(sizeof(MSR) == sizeof(u32));
+static_assert(MSR(0xD51BD040).Verify());
+static_assert(MSR(0xD51BD040).GetSystemReg() == TpidrEl0);
+static_assert(MSR(0xD51BD040).GetRt() == 0x0);
+
+// https://developer.arm.com/documentation/ddi0596/2021-12/Base-Instructions/LDXR--Load-Exclusive-Register-
+// https://developer.arm.com/documentation/ddi0596/2021-12/Base-Instructions/LDXP--Load-Exclusive-Pair-of-Registers-
+// https://developer.arm.com/documentation/ddi0596/2021-12/Base-Instructions/STXR--Store-Exclusive-Register-
+// https://developer.arm.com/documentation/ddi0596/2021-12/Base-Instructions/STXP--Store-Exclusive-Pair-of-registers-
+union Exclusive {
+    constexpr explicit Exclusive(u32 raw_) : raw{raw_} {}
+
+    constexpr bool Verify() {
+        return this->GetSig() == 0x10;
+    }
+
+    constexpr u32 GetSig() {
+        return decltype(sig)::ExtractValue(raw);
+    }
+
+    constexpr u32 AsOrdered() {
+        return raw | decltype(o0)::FormatValue(1);
+    }
+
+    u32 raw;
+
+private:
+    BitField<0, 5, u32> rt;    // memory operand
+    BitField<5, 5, u32> rn;    // register operand 1
+    BitField<10, 5, u32> rt2;  // register operand 2
+    BitField<15, 1, u32> o0;   // ordered
+    BitField<16, 5, u32> rs;   // status register
+    BitField<21, 2, u32> l;    // operation type
+    BitField<23, 7, u32> sig;  // 0x10
+    BitField<30, 2, u32> size; // size
+};
+static_assert(Exclusive(0xC85FFC00).Verify());
+static_assert(Exclusive(0xC85FFC00).AsOrdered() == 0xC85FFC00);
+static_assert(Exclusive(0xC85F7C00).AsOrdered() == 0xC85FFC00);
+static_assert(Exclusive(0xC8200440).AsOrdered() == 0xC8208440);
+
+} // namespace Core::NCE

src/core/arm/nce/patch.cpp

@@ -0,0 +1,474 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/arm64/native_clock.h"
+#include "common/bit_cast.h"
+#include "common/literals.h"
+#include "core/arm/nce/arm_nce.h"
+#include "core/arm/nce/guest_context.h"
+#include "core/arm/nce/instructions.h"
+#include "core/arm/nce/patch.h"
+#include "core/core.h"
+#include "core/core_timing.h"
+#include "core/hle/kernel/svc.h"
+
+namespace Core::NCE {
+
+using namespace Common::Literals;
+using namespace oaknut::util;
+
+using NativeExecutionParameters = Kernel::KThread::NativeExecutionParameters;
+
+constexpr size_t MaxRelativeBranch = 128_MiB;
+constexpr u32 ModuleCodeIndex = 0x24 / sizeof(u32);
+
+Patcher::Patcher() : c(m_patch_instructions) {}
+
+Patcher::~Patcher() = default;
+
+void Patcher::PatchText(const Kernel::PhysicalMemory& program_image,
+                        const Kernel::CodeSet::Segment& code) {
+
+    // Write save context helper function.
+    c.l(m_save_context);
+    WriteSaveContext();
+
+    // Write load context helper function.
+    c.l(m_load_context);
+    WriteLoadContext();
+
+    // Retrieve text segment data.
+    const auto text = std::span{program_image}.subspan(code.offset, code.size);
+    const auto text_words =
+        std::span<const u32>{reinterpret_cast<const u32*>(text.data()), text.size() / sizeof(u32)};
+
+    // Loop through instructions, patching as needed.
+    for (u32 i = ModuleCodeIndex; i < static_cast<u32>(text_words.size()); i++) {
+        const u32 inst = text_words[i];
+
+        const auto AddRelocations = [&] {
+            const uintptr_t this_offset = i * sizeof(u32);
+            const uintptr_t next_offset = this_offset + sizeof(u32);
+
+            // Relocate from here to patch.
+            this->BranchToPatch(this_offset);
+
+            // Relocate from patch to next instruction.
+            return next_offset;
+        };
+
+        // SVC
+        if (auto svc = SVC{inst}; svc.Verify()) {
+            WriteSvcTrampoline(AddRelocations(), svc.GetValue());
+            continue;
+        }
+
+        // MRS Xn, TPIDR_EL0
+        // MRS Xn, TPIDRRO_EL0
+        if (auto mrs = MRS{inst};
+            mrs.Verify() && (mrs.GetSystemReg() == TpidrroEl0 || mrs.GetSystemReg() == TpidrEl0)) {
+            const auto src_reg = mrs.GetSystemReg() == TpidrroEl0 ? oaknut::SystemReg::TPIDRRO_EL0
+                                                                  : oaknut::SystemReg::TPIDR_EL0;
+            const auto dest_reg = oaknut::XReg{static_cast<int>(mrs.GetRt())};
+            WriteMrsHandler(AddRelocations(), dest_reg, src_reg);
+            continue;
+        }
+
+        // MRS Xn, CNTPCT_EL0
+        if (auto mrs = MRS{inst}; mrs.Verify() && mrs.GetSystemReg() == CntpctEl0) {
+            WriteCntpctHandler(AddRelocations(), oaknut::XReg{static_cast<int>(mrs.GetRt())});
+            continue;
+        }
+
+        // MRS Xn, CNTFRQ_EL0
+        if (auto mrs = MRS{inst}; mrs.Verify() && mrs.GetSystemReg() == CntfrqEl0) {
+            UNREACHABLE();
+        }
+
+        // MSR TPIDR_EL0, Xn
+        if (auto msr = MSR{inst}; msr.Verify() && msr.GetSystemReg() == TpidrEl0) {
+            WriteMsrHandler(AddRelocations(), oaknut::XReg{static_cast<int>(msr.GetRt())});
+            continue;
+        }
+
+        if (auto exclusive = Exclusive{inst}; exclusive.Verify()) {
+            m_exclusives.push_back(i);
+        }
+    }
+
+    // Determine patching mode for the final relocation step
+    const size_t image_size = program_image.size();
+    this->mode = image_size > MaxRelativeBranch ? PatchMode::PreText : PatchMode::PostData;
+}
+
+void Patcher::RelocateAndCopy(Common::ProcessAddress load_base,
+                              const Kernel::CodeSet::Segment& code,
+                              Kernel::PhysicalMemory& program_image,
+                              EntryTrampolines* out_trampolines) {
+    const size_t patch_size = GetSectionSize();
+    const size_t image_size = program_image.size();
+
+    // Retrieve text segment data.
+    const auto text = std::span{program_image}.subspan(code.offset, code.size);
+    const auto text_words =
+        std::span<u32>{reinterpret_cast<u32*>(text.data()), text.size() / sizeof(u32)};
+
+    const auto ApplyBranchToPatchRelocation = [&](u32* target, const Relocation& rel) {
+        oaknut::CodeGenerator rc{target};
+        if (mode == PatchMode::PreText) {
+            rc.B(rel.patch_offset - patch_size - rel.module_offset);
+        } else {
+            rc.B(image_size - rel.module_offset + rel.patch_offset);
+        }
+    };
+
+    const auto ApplyBranchToModuleRelocation = [&](u32* target, const Relocation& rel) {
+        oaknut::CodeGenerator rc{target};
+        if (mode == PatchMode::PreText) {
+            rc.B(patch_size - rel.patch_offset + rel.module_offset);
+        } else {
+            rc.B(rel.module_offset - image_size - rel.patch_offset);
+        }
+    };
+
+    const auto RebasePatch = [&](ptrdiff_t patch_offset) {
+        if (mode == PatchMode::PreText) {
+            return GetInteger(load_base) + patch_offset;
+        } else {
+            return GetInteger(load_base) + image_size + patch_offset;
+        }
+    };
+
+    const auto RebasePc = [&](uintptr_t module_offset) {
+        if (mode == PatchMode::PreText) {
+            return GetInteger(load_base) + patch_size + module_offset;
+        } else {
+            return GetInteger(load_base) + module_offset;
+        }
+    };
+
+    // We are now ready to relocate!
+    for (const Relocation& rel : m_branch_to_patch_relocations) {
+        ApplyBranchToPatchRelocation(text_words.data() + rel.module_offset / sizeof(u32), rel);
+    }
+    for (const Relocation& rel : m_branch_to_module_relocations) {
+        ApplyBranchToModuleRelocation(m_patch_instructions.data() + rel.patch_offset / sizeof(u32),
+                                      rel);
+    }
+
+    // Rewrite PC constants and record post trampolines
+    for (const Relocation& rel : m_write_module_pc_relocations) {
+        oaknut::CodeGenerator rc{m_patch_instructions.data() + rel.patch_offset / sizeof(u32)};
+        rc.dx(RebasePc(rel.module_offset));
+    }
+    for (const Trampoline& rel : m_trampolines) {
+        out_trampolines->insert({RebasePc(rel.module_offset), RebasePatch(rel.patch_offset)});
+    }
+
+    // Cortex-A57 seems to treat all exclusives as ordered, but newer processors do not.
+    // Convert to ordered to preserve this assumption.
+    for (const ModuleTextAddress i : m_exclusives) {
+        auto exclusive = Exclusive{text_words[i]};
+        text_words[i] = exclusive.AsOrdered();
+    }
+
+    // Copy to program image
+    if (this->mode == PatchMode::PreText) {
+        std::memcpy(program_image.data(), m_patch_instructions.data(),
+                    m_patch_instructions.size() * sizeof(u32));
+    } else {
+        program_image.resize(image_size + patch_size);
+        std::memcpy(program_image.data() + image_size, m_patch_instructions.data(),
+                    m_patch_instructions.size() * sizeof(u32));
+    }
+}
+
+size_t Patcher::GetSectionSize() const noexcept {
+    return Common::AlignUp(m_patch_instructions.size() * sizeof(u32), Core::Memory::YUZU_PAGESIZE);
+}
+
+void Patcher::WriteLoadContext() {
+    // This function was called, which modifies X30, so use that as a scratch register.
+    // SP contains the guest X30, so save our return X30 to SP + 8, since we have allocated 16 bytes
+    // of stack.
+    c.STR(X30, SP, 8);
+    c.MRS(X30, oaknut::SystemReg::TPIDR_EL0);
+    c.LDR(X30, X30, offsetof(NativeExecutionParameters, native_context));
+
+    // Load system registers.
+    c.LDR(W0, X30, offsetof(GuestContext, fpsr));
+    c.MSR(oaknut::SystemReg::FPSR, X0);
+    c.LDR(W0, X30, offsetof(GuestContext, fpcr));
+    c.MSR(oaknut::SystemReg::FPCR, X0);
+    c.LDR(W0, X30, offsetof(GuestContext, nzcv));
+    c.MSR(oaknut::SystemReg::NZCV, X0);
+
+    // Load all vector registers.
+    static constexpr size_t VEC_OFF = offsetof(GuestContext, vector_registers);
+    for (int i = 0; i <= 30; i += 2) {
+        c.LDP(oaknut::QReg{i}, oaknut::QReg{i + 1}, X30, VEC_OFF + 16 * i);
+    }
+
+    // Load all general-purpose registers except X30.
+    for (int i = 0; i <= 28; i += 2) {
+        c.LDP(oaknut::XReg{i}, oaknut::XReg{i + 1}, X30, 8 * i);
+    }
+
+    // Reload our return X30 from the stack and return.
+    // The patch code will reload the guest X30 for us.
+    c.LDR(X30, SP, 8);
+    c.RET();
+}
+
+void Patcher::WriteSaveContext() {
+    // This function was called, which modifies X30, so use that as a scratch register.
+    // SP contains the guest X30, so save our X30 to SP + 8, since we have allocated 16 bytes of
+    // stack.
+    c.STR(X30, SP, 8);
+    c.MRS(X30, oaknut::SystemReg::TPIDR_EL0);
+    c.LDR(X30, X30, offsetof(NativeExecutionParameters, native_context));
+
+    // Store all general-purpose registers except X30.
+    for (int i = 0; i <= 28; i += 2) {
+        c.STP(oaknut::XReg{i}, oaknut::XReg{i + 1}, X30, 8 * i);
+    }
+
+    // Store all vector registers.
+    static constexpr size_t VEC_OFF = offsetof(GuestContext, vector_registers);
+    for (int i = 0; i <= 30; i += 2) {
+        c.STP(oaknut::QReg{i}, oaknut::QReg{i + 1}, X30, VEC_OFF + 16 * i);
+    }
+
+    // Store guest system registers, X30 and SP, using X0 as a scratch register.
+    c.STR(X0, SP, PRE_INDEXED, -16);
+    c.LDR(X0, SP, 16);
+    c.STR(X0, X30, 8 * 30);
+    c.ADD(X0, SP, 32);
+    c.STR(X0, X30, offsetof(GuestContext, sp));
+    c.MRS(X0, oaknut::SystemReg::FPSR);
+    c.STR(W0, X30, offsetof(GuestContext, fpsr));
+    c.MRS(X0, oaknut::SystemReg::FPCR);
+    c.STR(W0, X30, offsetof(GuestContext, fpcr));
+    c.MRS(X0, oaknut::SystemReg::NZCV);
+    c.STR(W0, X30, offsetof(GuestContext, nzcv));
+    c.LDR(X0, SP, POST_INDEXED, 16);
+
+    // Reload our return X30 from the stack, and return.
+    c.LDR(X30, SP, 8);
+    c.RET();
+}
+
+void Patcher::WriteSvcTrampoline(ModuleDestLabel module_dest, u32 svc_id) {
+    // We are about to start saving state, so we need to lock the context.
+    this->LockContext();
+
+    // Store guest X30 to the stack. Then, save the context and restore the stack.
+    // This will save all registers except PC, but we know PC at patch time.
+    c.STR(X30, SP, PRE_INDEXED, -16);
+    c.BL(m_save_context);
+    c.LDR(X30, SP, POST_INDEXED, 16);
+
+    // Now that we've saved all registers, we can use any registers as scratch.
+    // Store PC + 4 to arm interface, since we know the instruction offset from the entry point.
+    oaknut::Label pc_after_svc;
+    c.MRS(X1, oaknut::SystemReg::TPIDR_EL0);
+    c.LDR(X1, X1, offsetof(NativeExecutionParameters, native_context));
+    c.LDR(X2, pc_after_svc);
+    c.STR(X2, X1, offsetof(GuestContext, pc));
+
+    // Store SVC number to execute when we return
+    c.MOV(X2, svc_id);
+    c.STR(W2, X1, offsetof(GuestContext, svc_swi));
+
+    // We are calling a SVC. Clear esr_el1 and return it.
+    static_assert(std::is_same_v<std::underlying_type_t<HaltReason>, u64>);
+    oaknut::Label retry;
+    c.ADD(X2, X1, offsetof(GuestContext, esr_el1));
+    c.l(retry);
+    c.LDAXR(X0, X2);
+    c.STLXR(W3, XZR, X2);
+    c.CBNZ(W3, retry);
+
+    // Add "calling SVC" flag. Since this is X0, this is now our return value.
+    c.ORR(X0, X0, static_cast<u64>(HaltReason::SupervisorCall));
+
+    // Offset the GuestContext pointer to the HostContext member.
+    // STP has limited range of [-512, 504] which we can't reach otherwise
+    // NB: Due to this all offsets below are from the start of HostContext.
+    c.ADD(X1, X1, offsetof(GuestContext, host_ctx));
+
+    // Reload host TPIDR_EL0 and SP.
+    static_assert(offsetof(HostContext, host_sp) + 8 == offsetof(HostContext, host_tpidr_el0));
+    c.LDP(X2, X3, X1, offsetof(HostContext, host_sp));
+    c.MOV(SP, X2);
+    c.MSR(oaknut::SystemReg::TPIDR_EL0, X3);
+
+    // Load callee-saved host registers and return to host.
+    static constexpr size_t HOST_REGS_OFF = offsetof(HostContext, host_saved_regs);
+    static constexpr size_t HOST_VREGS_OFF = offsetof(HostContext, host_saved_vregs);
+    c.LDP(X19, X20, X1, HOST_REGS_OFF);
+    c.LDP(X21, X22, X1, HOST_REGS_OFF + 2 * sizeof(u64));
+    c.LDP(X23, X24, X1, HOST_REGS_OFF + 4 * sizeof(u64));
+    c.LDP(X25, X26, X1, HOST_REGS_OFF + 6 * sizeof(u64));
+    c.LDP(X27, X28, X1, HOST_REGS_OFF + 8 * sizeof(u64));
+    c.LDP(X29, X30, X1, HOST_REGS_OFF + 10 * sizeof(u64));
+    c.LDP(Q8, Q9, X1, HOST_VREGS_OFF);
+    c.LDP(Q10, Q11, X1, HOST_VREGS_OFF + 2 * sizeof(u128));
+    c.LDP(Q12, Q13, X1, HOST_VREGS_OFF + 4 * sizeof(u128));
+    c.LDP(Q14, Q15, X1, HOST_VREGS_OFF + 6 * sizeof(u128));
+    c.RET();
+
+    // Write the post-SVC trampoline address, which will jump back to the guest after restoring its
+    // state.
+    m_trampolines.push_back({c.offset(), module_dest});
+
+    // Host called this location. Save the return address so we can
+    // unwind the stack properly when jumping back.
+    c.MRS(X2, oaknut::SystemReg::TPIDR_EL0);
+    c.LDR(X2, X2, offsetof(NativeExecutionParameters, native_context));
+    c.ADD(X0, X2, offsetof(GuestContext, host_ctx));
+    c.STR(X30, X0, offsetof(HostContext, host_saved_regs) + 11 * sizeof(u64));
+
+    // Reload all guest registers except X30 and PC.
+    // The function also expects 16 bytes of stack already allocated.
+    c.STR(X30, SP, PRE_INDEXED, -16);
+    c.BL(m_load_context);
+    c.LDR(X30, SP, POST_INDEXED, 16);
+
+    // Use X1 as a scratch register to restore X30.
+    c.STR(X1, SP, PRE_INDEXED, -16);
+    c.MRS(X1, oaknut::SystemReg::TPIDR_EL0);
+    c.LDR(X1, X1, offsetof(NativeExecutionParameters, native_context));
+    c.LDR(X30, X1, offsetof(GuestContext, cpu_registers) + sizeof(u64) * 30);
+    c.LDR(X1, SP, POST_INDEXED, 16);
+
+    // Unlock the context.
+    this->UnlockContext();
+
+    // Jump back to the instruction after the emulated SVC.
+    this->BranchToModule(module_dest);
+
+    // Store PC after call.
+    c.l(pc_after_svc);
+    this->WriteModulePc(module_dest);
+}
+
+void Patcher::WriteMrsHandler(ModuleDestLabel module_dest, oaknut::XReg dest_reg,
+                              oaknut::SystemReg src_reg) {
+    // Retrieve emulated TLS register from GuestContext.
+    c.MRS(dest_reg, oaknut::SystemReg::TPIDR_EL0);
+    if (src_reg == oaknut::SystemReg::TPIDRRO_EL0) {
+        c.LDR(dest_reg, dest_reg, offsetof(NativeExecutionParameters, tpidrro_el0));
+    } else {
+        c.LDR(dest_reg, dest_reg, offsetof(NativeExecutionParameters, tpidr_el0));
+    }
+
+    // Jump back to the instruction after the emulated MRS.
+    this->BranchToModule(module_dest);
+}
+
+void Patcher::WriteMsrHandler(ModuleDestLabel module_dest, oaknut::XReg src_reg) {
+    const auto scratch_reg = src_reg.index() == 0 ? X1 : X0;
+    c.STR(scratch_reg, SP, PRE_INDEXED, -16);
+
+    // Save guest value to NativeExecutionParameters::tpidr_el0.
+    c.MRS(scratch_reg, oaknut::SystemReg::TPIDR_EL0);
+    c.STR(src_reg, scratch_reg, offsetof(NativeExecutionParameters, tpidr_el0));
+
+    // Restore scratch register.
+    c.LDR(scratch_reg, SP, POST_INDEXED, 16);
+
+    // Jump back to the instruction after the emulated MSR.
+    this->BranchToModule(module_dest);
+}
+
+void Patcher::WriteCntpctHandler(ModuleDestLabel module_dest, oaknut::XReg dest_reg) {
+    static Common::Arm64::NativeClock clock{};
+    const auto factor = clock.GetGuestCNTFRQFactor();
+    const auto raw_factor = Common::BitCast<std::array<u64, 2>>(factor);
+
+    const auto use_x2_x3 = dest_reg.index() == 0 || dest_reg.index() == 1;
+    oaknut::XReg scratch0 = use_x2_x3 ? X2 : X0;
+    oaknut::XReg scratch1 = use_x2_x3 ? X3 : X1;
+
+    oaknut::Label factorlo;
+    oaknut::Label factorhi;
+
+    // Save scratches.
+    c.STP(scratch0, scratch1, SP, PRE_INDEXED, -16);
+
+    // Load counter value.
+    c.MRS(dest_reg, oaknut::SystemReg::CNTVCT_EL0);
+
+    // Load scaling factor.
+    c.LDR(scratch0, factorlo);
+    c.LDR(scratch1, factorhi);
+
+    // Multiply low bits and get result.
+    c.UMULH(scratch0, dest_reg, scratch0);
+
+    // Multiply high bits and add low bit result.
+    c.MADD(dest_reg, dest_reg, scratch1, scratch0);
+
+    // Reload scratches.
+    c.LDP(scratch0, scratch1, SP, POST_INDEXED, 16);
+
+    // Jump back to the instruction after the emulated MRS.
+    this->BranchToModule(module_dest);
+
+    // Scaling factor constant values.
+    c.l(factorlo);
+    c.dx(raw_factor[0]);
+    c.l(factorhi);
+    c.dx(raw_factor[1]);
+}
+
+void Patcher::LockContext() {
+    oaknut::Label retry;
+
+    // Save scratches.
+    c.STP(X0, X1, SP, PRE_INDEXED, -16);
+
+    // Reload lock pointer.
+    c.l(retry);
+    c.CLREX();
+    c.MRS(X0, oaknut::SystemReg::TPIDR_EL0);
+    c.ADD(X0, X0, offsetof(NativeExecutionParameters, lock));
+
+    static_assert(SpinLockLocked == 0);
+
+    // Load-linked with acquire ordering.
+    c.LDAXR(W1, X0);
+
+    // If the value was SpinLockLocked, clear monitor and retry.
+    c.CBZ(W1, retry);
+
+    // Store-conditional SpinLockLocked with relaxed ordering.
+    c.STXR(W1, WZR, X0);
+
+    // If we failed to store, retry.
+    c.CBNZ(W1, retry);
+
+    // We succeeded! Reload scratches.
+    c.LDP(X0, X1, SP, POST_INDEXED, 16);
+}
+
+void Patcher::UnlockContext() {
+    // Save scratches.
+    c.STP(X0, X1, SP, PRE_INDEXED, -16);
+
+    // Load lock pointer.
+    c.MRS(X0, oaknut::SystemReg::TPIDR_EL0);
+    c.ADD(X0, X0, offsetof(NativeExecutionParameters, lock));
+
+    // Load SpinLockUnlocked.
+    c.MOV(W1, SpinLockUnlocked);
+
+    // Store value with release ordering.
+    c.STLR(W1, X0);
+
+    // Load scratches.
+    c.LDP(X0, X1, SP, POST_INDEXED, 16);
+}
+
+} // namespace Core::NCE

src/core/arm/nce/patch.h

@@ -0,0 +1,98 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <span>
+#include <unordered_map>
+#include <vector>
+#include <oaknut/code_block.hpp>
+#include <oaknut/oaknut.hpp>
+
+#include "common/common_types.h"
+#include "core/hle/kernel/code_set.h"
+#include "core/hle/kernel/k_typed_address.h"
+#include "core/hle/kernel/physical_memory.h"
+
+namespace Core::NCE {
+
+enum class PatchMode : u32 {
+    None,
+    PreText,  ///< Patch section is inserted before .text
+    PostData, ///< Patch section is inserted after .data
+};
+
+using ModuleTextAddress = u64;
+using PatchTextAddress = u64;
+using EntryTrampolines = std::unordered_map<ModuleTextAddress, PatchTextAddress>;
+
+class Patcher {
+public:
+    explicit Patcher();
+    ~Patcher();
+
+    void PatchText(const Kernel::PhysicalMemory& program_image,
+                   const Kernel::CodeSet::Segment& code);
+    void RelocateAndCopy(Common::ProcessAddress load_base, const Kernel::CodeSet::Segment& code,
+                         Kernel::PhysicalMemory& program_image, EntryTrampolines* out_trampolines);
+    size_t GetSectionSize() const noexcept;
+
+    [[nodiscard]] PatchMode GetPatchMode() const noexcept {
+        return mode;
+    }
+
+private:
+    using ModuleDestLabel = uintptr_t;
+
+    struct Trampoline {
+        ptrdiff_t patch_offset;
+        uintptr_t module_offset;
+    };
+
+    void WriteLoadContext();
+    void WriteSaveContext();
+    void LockContext();
+    void UnlockContext();
+    void WriteSvcTrampoline(ModuleDestLabel module_dest, u32 svc_id);
+    void WriteMrsHandler(ModuleDestLabel module_dest, oaknut::XReg dest_reg,
+                         oaknut::SystemReg src_reg);
+    void WriteMsrHandler(ModuleDestLabel module_dest, oaknut::XReg src_reg);
+    void WriteCntpctHandler(ModuleDestLabel module_dest, oaknut::XReg dest_reg);
+
+private:
+    void BranchToPatch(uintptr_t module_dest) {
+        m_branch_to_patch_relocations.push_back({c.offset(), module_dest});
+    }
+
+    void BranchToModule(uintptr_t module_dest) {
+        m_branch_to_module_relocations.push_back({c.offset(), module_dest});
+        c.dw(0);
+    }
+
+    void WriteModulePc(uintptr_t module_dest) {
+        m_write_module_pc_relocations.push_back({c.offset(), module_dest});
+        c.dx(0);
+    }
+
+private:
+    // List of patch instructions we have generated.
+    std::vector<u32> m_patch_instructions{};
+
+    // Relocation type for relative branch from module to patch.
+    struct Relocation {
+        ptrdiff_t patch_offset;  ///< Offset in bytes from the start of the patch section.
+        uintptr_t module_offset; ///< Offset in bytes from the start of the text section.
+    };
+
+    oaknut::VectorCodeGenerator c;
+    std::vector<Trampoline> m_trampolines;
+    std::vector<Relocation> m_branch_to_patch_relocations{};
+    std::vector<Relocation> m_branch_to_module_relocations{};
+    std::vector<Relocation> m_write_module_pc_relocations{};
+    std::vector<ModuleTextAddress> m_exclusives{};
+    oaknut::Label m_save_context{};
+    oaknut::Label m_load_context{};
+    PatchMode mode{PatchMode::None};
+};
+
+} // namespace Core::NCE

src/core/cpu_manager.cpp

@@ -211,6 +211,8 @@ void CpuManager::RunThread(std::stop_token token, std::size_t core) {
         system.GPU().ObtainContext();
     }
 
+    system.ArmInterface(core).Initialize();
+
     auto& kernel = system.Kernel();
     auto& scheduler = *kernel.CurrentScheduler();
     auto* thread = scheduler.GetSchedulerCurrentThread();

src/core/device_memory.cpp

@@ -6,7 +6,7 @@
 
 namespace Core {
 
-#ifdef ANDROID
+#ifdef HAS_NCE
 constexpr size_t VirtualReserveSize = 1ULL << 38;
 #else
 constexpr size_t VirtualReserveSize = 1ULL << 39;
@@ -15,6 +15,7 @@ constexpr size_t VirtualReserveSize = 1ULL << 39;
 DeviceMemory::DeviceMemory()
     : buffer{Kernel::Board::Nintendo::Nx::KSystemControl::Init::GetIntendedMemorySize(),
              VirtualReserveSize} {}
+
 DeviceMemory::~DeviceMemory() = default;
 
 } // namespace Core

src/core/frontend/emu_window.h

@@ -167,6 +167,11 @@ protected:
      */
     std::pair<f32, f32> MapToTouchScreen(u32 framebuffer_x, u32 framebuffer_y) const;
 
+    /**
+     * Clip the provided coordinates to be inside the touchscreen area.
+     */
+    std::pair<u32, u32> ClipToTouchScreen(u32 new_x, u32 new_y) const;
+
     WindowSystemInfo window_info;
 
     bool strict_context_required = false;
@@ -181,11 +186,6 @@ private:
         // By default, ignore this request and do nothing.
     }
 
-    /**
-     * Clip the provided coordinates to be inside the touchscreen area.
-     */
-    std::pair<u32, u32> ClipToTouchScreen(u32 new_x, u32 new_y) const;
-
     Layout::FramebufferLayout framebuffer_layout; ///< Current framebuffer layout
 
     u32 client_area_width;  ///< Current client width, should be set by window impl.

src/core/hid/emulated_controller.cpp

@@ -8,6 +8,7 @@
 #include "common/thread.h"
 #include "core/hid/emulated_controller.h"
 #include "core/hid/input_converter.h"
+#include "core/hle/service/hid/hid_util.h"
 
 namespace Core::HID {
 constexpr s32 HID_JOYSTICK_MAX = 0x7fff;
@@ -82,7 +83,7 @@ Settings::ControllerType EmulatedController::MapNPadToSettingsType(NpadStyleInde
 }
 
 void EmulatedController::ReloadFromSettings() {
-    const auto player_index = NpadIdTypeToIndex(npad_id_type);
+    const auto player_index = Service::HID::NpadIdTypeToIndex(npad_id_type);
     const auto& player = Settings::values.players.GetValue()[player_index];
 
     for (std::size_t index = 0; index < player.buttons.size(); ++index) {
@@ -118,7 +119,7 @@ void EmulatedController::ReloadFromSettings() {
 }
 
 void EmulatedController::ReloadColorsFromSettings() {
-    const auto player_index = NpadIdTypeToIndex(npad_id_type);
+    const auto player_index = Service::HID::NpadIdTypeToIndex(npad_id_type);
     const auto& player = Settings::values.players.GetValue()[player_index];
 
     // Avoid updating colors if overridden by physical controller
@@ -215,7 +216,7 @@ void EmulatedController::LoadDevices() {
 }
 
 void EmulatedController::LoadTASParams() {
-    const auto player_index = NpadIdTypeToIndex(npad_id_type);
+    const auto player_index = Service::HID::NpadIdTypeToIndex(npad_id_type);
     Common::ParamPackage common_params{};
     common_params.Set("engine", "tas");
     common_params.Set("port", static_cast<int>(player_index));
@@ -264,7 +265,7 @@ void EmulatedController::LoadTASParams() {
 }
 
 void EmulatedController::LoadVirtualGamepadParams() {
-    const auto player_index = NpadIdTypeToIndex(npad_id_type);
+    const auto player_index = Service::HID::NpadIdTypeToIndex(npad_id_type);
     Common::ParamPackage common_params{};
     common_params.Set("engine", "virtual_gamepad");
     common_params.Set("port", static_cast<int>(player_index));
@@ -508,9 +509,11 @@ void EmulatedController::ReloadInput() {
         });
     }
     turbo_button_state = 0;
+    is_initalized = true;
 }
 
 void EmulatedController::UnloadInput() {
+    is_initalized = false;
     for (auto& button : button_devices) {
         button.reset();
     }
@@ -615,7 +618,7 @@ bool EmulatedController::IsConfiguring() const {
 }
 
 void EmulatedController::SaveCurrentConfig() {
-    const auto player_index = NpadIdTypeToIndex(npad_id_type);
+    const auto player_index = Service::HID::NpadIdTypeToIndex(npad_id_type);
     auto& player = Settings::values.players.GetValue()[player_index];
     player.connected = is_connected;
     player.controller_type = MapNPadToSettingsType(npad_type);
@@ -1206,13 +1209,16 @@ void EmulatedController::SetNfc(const Common::Input::CallbackStatus& callback) {
 }
 
 bool EmulatedController::SetVibration(std::size_t device_index, VibrationValue vibration) {
+    if (!is_initalized) {
+        return false;
+    }
     if (device_index >= output_devices.size()) {
         return false;
     }
     if (!output_devices[device_index]) {
         return false;
     }
-    const auto player_index = NpadIdTypeToIndex(npad_id_type);
+    const auto player_index = Service::HID::NpadIdTypeToIndex(npad_id_type);
     const auto& player = Settings::values.players.GetValue()[player_index];
     const f32 strength = static_cast<f32>(player.vibration_strength) / 100.0f;
 
@@ -1238,9 +1244,13 @@ bool EmulatedController::SetVibration(std::size_t device_index, VibrationValue v
 }
 
 bool EmulatedController::IsVibrationEnabled(std::size_t device_index) {
-    const auto player_index = NpadIdTypeToIndex(npad_id_type);
+    const auto player_index = Service::HID::NpadIdTypeToIndex(npad_id_type);
     const auto& player = Settings::values.players.GetValue()[player_index];
 
+    if (!is_initalized) {
+        return false;
+    }
+
     if (!player.vibration_enabled) {
         return false;
     }
@@ -1260,6 +1270,10 @@ Common::Input::DriverResult EmulatedController::SetPollingMode(
     EmulatedDeviceIndex device_index, Common::Input::PollingMode polling_mode) {
     LOG_INFO(Service_HID, "Set polling mode {}, device_index={}", polling_mode, device_index);
 
+    if (!is_initalized) {
+        return Common::Input::DriverResult::InvalidHandle;
+    }
+
     auto& left_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Left)];
     auto& right_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& nfc_output_device = output_devices[3];
@@ -1305,6 +1319,10 @@ bool EmulatedController::SetCameraFormat(
     Core::IrSensor::ImageTransferProcessorFormat camera_format) {
     LOG_INFO(Service_HID, "Set camera format {}", camera_format);
 
+    if (!is_initalized) {
+        return false;
+    }
+
     auto& right_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& camera_output_device = output_devices[2];
 
@@ -1328,6 +1346,11 @@ void EmulatedController::SetRingParam(Common::ParamPackage param) {
 }
 
 bool EmulatedController::HasNfc() const {
+
+    if (!is_initalized) {
+        return false;
+    }
+
     const auto& nfc_output_device = output_devices[3];
 
     switch (npad_type) {
@@ -1365,6 +1388,10 @@ bool EmulatedController::RemoveNfcHandle() {
 }
 
 bool EmulatedController::StartNfcPolling() {
+    if (!is_initalized) {
+        return false;
+    }
+
     auto& nfc_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& nfc_virtual_output_device = output_devices[3];
 
@@ -1376,6 +1403,10 @@ bool EmulatedController::StartNfcPolling() {
 }
 
 bool EmulatedController::StopNfcPolling() {
+    if (!is_initalized) {
+        return false;
+    }
+
     auto& nfc_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& nfc_virtual_output_device = output_devices[3];
 
@@ -1387,6 +1418,10 @@ bool EmulatedController::StopNfcPolling() {
 }
 
 bool EmulatedController::ReadAmiiboData(std::vector<u8>& data) {
+    if (!is_initalized) {
+        return false;
+    }
+
     auto& nfc_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& nfc_virtual_output_device = output_devices[3];
 
@@ -1399,6 +1434,10 @@ bool EmulatedController::ReadAmiiboData(std::vector<u8>& data) {
 
 bool EmulatedController::ReadMifareData(const Common::Input::MifareRequest& request,
                                         Common::Input::MifareRequest& out_data) {
+    if (!is_initalized) {
+        return false;
+    }
+
     auto& nfc_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& nfc_virtual_output_device = output_devices[3];
 
@@ -1411,6 +1450,10 @@ bool EmulatedController::ReadMifareData(const Common::Input::MifareRequest& requ
 }
 
 bool EmulatedController::WriteMifareData(const Common::Input::MifareRequest& request) {
+    if (!is_initalized) {
+        return false;
+    }
+
     auto& nfc_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& nfc_virtual_output_device = output_devices[3];
 
@@ -1422,6 +1465,10 @@ bool EmulatedController::WriteMifareData(const Common::Input::MifareRequest& req
 }
 
 bool EmulatedController::WriteNfc(const std::vector<u8>& data) {
+    if (!is_initalized) {
+        return false;
+    }
+
     auto& nfc_output_device = output_devices[static_cast<std::size_t>(DeviceIndex::Right)];
     auto& nfc_virtual_output_device = output_devices[3];
 
@@ -1433,6 +1480,10 @@ bool EmulatedController::WriteNfc(const std::vector<u8>& data) {
 }
 
 void EmulatedController::SetLedPattern() {
+    if (!is_initalized) {
+        return;
+    }
+
     for (auto& device : output_devices) {
         if (!device) {
             continue;
@@ -1648,7 +1699,7 @@ void EmulatedController::SetNpadStyleIndex(NpadStyleIndex npad_type_) {
     }
     if (is_connected) {
         LOG_WARNING(Service_HID, "Controller {} type changed while it's connected",
-                    NpadIdTypeToIndex(npad_id_type));
+                    Service::HID::NpadIdTypeToIndex(npad_id_type));
     }
     npad_type = npad_type_;
 }

src/core/hid/emulated_controller.h

@@ -559,6 +559,7 @@ private:
     NpadStyleTag supported_style_tag{NpadStyleSet::All};
     bool is_connected{false};
     bool is_configuring{false};
+    bool is_initalized{false};
     bool system_buttons_enabled{true};
     f32 motion_sensitivity{Core::HID::MotionInput::IsAtRestStandard};
     u32 turbo_button_state{0};

src/core/hid/hid_core.cpp

@@ -6,6 +6,7 @@
 #include "core/hid/emulated_controller.h"
 #include "core/hid/emulated_devices.h"
 #include "core/hid/hid_core.h"
+#include "core/hle/service/hid/hid_util.h"
 
 namespace Core::HID {
 
@@ -98,11 +99,11 @@ const EmulatedDevices* HIDCore::GetEmulatedDevices() const {
 }
 
 EmulatedController* HIDCore::GetEmulatedControllerByIndex(std::size_t index) {
-    return GetEmulatedController(IndexToNpadIdType(index));
+    return GetEmulatedController(Service::HID::IndexToNpadIdType(index));
 }
 
 const EmulatedController* HIDCore::GetEmulatedControllerByIndex(std::size_t index) const {
-    return GetEmulatedController(IndexToNpadIdType(index));
+    return GetEmulatedController(Service::HID::IndexToNpadIdType(index));
 }
 
 void HIDCore::SetSupportedStyleTag(NpadStyleTag style_tag) {

src/core/hid/hid_types.h

@@ -8,6 +8,7 @@
 #include "common/common_types.h"
 #include "common/point.h"
 #include "common/uuid.h"
+#include "common/vector_math.h"
 
 namespace Core::HID {
 
@@ -218,6 +219,13 @@ enum class NpadIdType : u32 {
     Invalid = 0xFFFFFFFF,
 };
 
+enum class NpadInterfaceType : u8 {
+    Bluetooth = 1,
+    Rail = 2,
+    Usb = 3,
+    Embedded = 4,
+};
+
 // This is nn::hid::NpadStyleIndex
 enum class NpadStyleIndex : u8 {
     None = 0,
@@ -591,6 +599,29 @@ struct SixAxisSensorIcInformation {
 static_assert(sizeof(SixAxisSensorIcInformation) == 0xC8,
               "SixAxisSensorIcInformation is an invalid size");
 
+// This is nn::hid::SixAxisSensorAttribute
+struct SixAxisSensorAttribute {
+    union {
+        u32 raw{};
+        BitField<0, 1, u32> is_connected;
+        BitField<1, 1, u32> is_interpolated;
+    };
+};
+static_assert(sizeof(SixAxisSensorAttribute) == 4, "SixAxisSensorAttribute is an invalid size");
+
+// This is nn::hid::SixAxisSensorState
+struct SixAxisSensorState {
+    s64 delta_time{};
+    s64 sampling_number{};
+    Common::Vec3f accel{};
+    Common::Vec3f gyro{};
+    Common::Vec3f rotation{};
+    std::array<Common::Vec3f, 3> orientation{};
+    SixAxisSensorAttribute attribute{};
+    INSERT_PADDING_BYTES(4); // Reserved
+};
+static_assert(sizeof(SixAxisSensorState) == 0x60, "SixAxisSensorState is an invalid size");
+
 // This is nn::hid::VibrationDeviceHandle
 struct VibrationDeviceHandle {
     NpadStyleIndex npad_type{NpadStyleIndex::None};
@@ -701,60 +732,4 @@ struct UniquePadId {
 };
 static_assert(sizeof(UniquePadId) == 0x8, "UniquePadId is an invalid size");
 
-/// Converts a NpadIdType to an array index.
-constexpr size_t NpadIdTypeToIndex(NpadIdType npad_id_type) {
-    switch (npad_id_type) {
-    case NpadIdType::Player1:
-        return 0;
-    case NpadIdType::Player2:
-        return 1;
-    case NpadIdType::Player3:
-        return 2;
-    case NpadIdType::Player4:
-        return 3;
-    case NpadIdType::Player5:
-        return 4;
-    case NpadIdType::Player6:
-        return 5;
-    case NpadIdType::Player7:
-        return 6;
-    case NpadIdType::Player8:
-        return 7;
-    case NpadIdType::Handheld:
-        return 8;
-    case NpadIdType::Other:
-        return 9;
-    default:
-        return 0;
-    }
-}
-
-/// Converts an array index to a NpadIdType
-constexpr NpadIdType IndexToNpadIdType(size_t index) {
-    switch (index) {
-    case 0:
-        return NpadIdType::Player1;
-    case 1:
-        return NpadIdType::Player2;
-    case 2:
-        return NpadIdType::Player3;
-    case 3:
-        return NpadIdType::Player4;
-    case 4:
-        return NpadIdType::Player5;
-    case 5:
-        return NpadIdType::Player6;
-    case 6:
-        return NpadIdType::Player7;
-    case 7:
-        return NpadIdType::Player8;
-    case 8:
-        return NpadIdType::Handheld;
-    case 9:
-        return NpadIdType::Other;
-    default:
-        return NpadIdType::Invalid;
-    }
-}
-
 } // namespace Core::HID

src/core/hid/input_interpreter.cpp

@@ -13,14 +13,14 @@ InputInterpreter::InputInterpreter(Core::System& system)
     : npad{system.ServiceManager()
                .GetService<Service::HID::IHidServer>("hid")
                ->GetResourceManager()
-               ->GetController<Service::HID::Controller_NPad>(Service::HID::HidController::NPad)} {
+               ->GetNpad()} {
     ResetButtonStates();
 }
 
 InputInterpreter::~InputInterpreter() = default;
 
 void InputInterpreter::PollInput() {
-    const auto button_state = npad.GetAndResetPressState();
+    const auto button_state = npad->GetAndResetPressState();
 
     previous_index = current_index;
     current_index = (current_index + 1) % button_states.size();

src/core/hid/input_interpreter.h

@@ -16,7 +16,7 @@ enum class NpadButton : u64;
 }
 
 namespace Service::HID {
-class Controller_NPad;
+class NPad;
 }
 
 /**
@@ -101,7 +101,7 @@ public:
     }
 
 private:
-    Service::HID::Controller_NPad& npad;
+    std::shared_ptr<Service::HID::NPad> npad;
 
     /// Stores 9 consecutive button states polled from HID.
     std::array<Core::HID::NpadButton, 9> button_states{};

src/core/hle/kernel/code_set.h

@@ -75,12 +75,26 @@ struct CodeSet final {
         return segments[2];
     }
 
+#ifdef HAS_NCE
+    Segment& PatchSegment() {
+        return patch_segment;
+    }
+
+    const Segment& PatchSegment() const {
+        return patch_segment;
+    }
+#endif
+
     /// The overall data that backs this code set.
     Kernel::PhysicalMemory memory;
 
     /// The segments that comprise this code set.
     std::array<Segment, 3> segments;
 
+#ifdef HAS_NCE
+    Segment patch_segment;
+#endif
+
     /// The entry point address for this code set.
     KProcessAddress entrypoint = 0;
 };

src/core/hle/kernel/k_address_space_info.cpp

@@ -25,8 +25,8 @@ constexpr std::array<KAddressSpaceInfo, 13> AddressSpaceInfos{{
    { .bit_width = 36, .address = 2_GiB       , .size = 64_GiB  - 2_GiB  , .type = KAddressSpaceInfo::Type::MapLarge, },
    { .bit_width = 36, .address = Size_Invalid, .size = 8_GiB            , .type = KAddressSpaceInfo::Type::Heap,     },
    { .bit_width = 36, .address = Size_Invalid, .size = 6_GiB            , .type = KAddressSpaceInfo::Type::Alias,    },
-#ifdef ANDROID
-   // With Android, we use a 38-bit address space due to memory limitations. This should (safely) truncate ASLR region.
+#ifdef HAS_NCE
+   // With NCE, we use a 38-bit address space due to memory limitations. This should (safely) truncate ASLR region.
    { .bit_width = 39, .address = 128_MiB     , .size = 256_GiB - 128_MiB, .type = KAddressSpaceInfo::Type::Map39Bit, },
 #else
    { .bit_width = 39, .address = 128_MiB     , .size = 512_GiB - 128_MiB, .type = KAddressSpaceInfo::Type::Map39Bit, },

src/core/hle/kernel/k_page_table_base.cpp

@@ -88,6 +88,22 @@ Result FlushDataCache(AddressType addr, u64 size) {
     R_SUCCEED();
 }
 
+constexpr Common::MemoryPermission ConvertToMemoryPermission(KMemoryPermission perm) {
+    Common::MemoryPermission perms{};
+    if (True(perm & KMemoryPermission::UserRead)) {
+        perms |= Common::MemoryPermission::Read;
+    }
+    if (True(perm & KMemoryPermission::UserWrite)) {
+        perms |= Common::MemoryPermission::Write;
+    }
+#ifdef HAS_NCE
+    if (True(perm & KMemoryPermission::UserExecute)) {
+        perms |= Common::MemoryPermission::Execute;
+    }
+#endif
+    return perms;
+}
+
 } // namespace
 
 void KPageTableBase::MemoryRange::Open() {
@@ -170,7 +186,8 @@ Result KPageTableBase::InitializeForProcess(Svc::CreateProcessFlag as_type, bool
                                             KMemoryManager::Pool pool, KProcessAddress code_address,
                                             size_t code_size, KSystemResource* system_resource,
                                             KResourceLimit* resource_limit,
-                                            Core::Memory::Memory& memory) {
+                                            Core::Memory::Memory& memory,
+                                            KProcessAddress aslr_space_start) {
     // Calculate region extents.
     const size_t as_width = GetAddressSpaceWidth(as_type);
     const KProcessAddress start = 0;
@@ -211,7 +228,8 @@ Result KPageTableBase::InitializeForProcess(Svc::CreateProcessFlag as_type, bool
         heap_region_size = GetSpaceSize(KAddressSpaceInfo::Type::Heap);
         stack_region_size = GetSpaceSize(KAddressSpaceInfo::Type::Stack);
         kernel_map_region_size = GetSpaceSize(KAddressSpaceInfo::Type::MapSmall);
-        m_code_region_start = GetSpaceStart(KAddressSpaceInfo::Type::Map39Bit);
+        m_code_region_start = m_address_space_start + aslr_space_start +
+                              GetSpaceStart(KAddressSpaceInfo::Type::Map39Bit);
         m_code_region_end = m_code_region_start + GetSpaceSize(KAddressSpaceInfo::Type::Map39Bit);
         m_alias_code_region_start = m_code_region_start;
         m_alias_code_region_end = m_code_region_end;
@@ -5643,7 +5661,8 @@ Result KPageTableBase::Operate(PageLinkedList* page_list, KProcessAddress virt_a
     case OperationType::Map: {
         ASSERT(virt_addr != 0);
         ASSERT(Common::IsAligned(GetInteger(virt_addr), PageSize));
-        m_memory->MapMemoryRegion(*m_impl, virt_addr, num_pages * PageSize, phys_addr);
+        m_memory->MapMemoryRegion(*m_impl, virt_addr, num_pages * PageSize, phys_addr,
+                                  ConvertToMemoryPermission(properties.perm));
 
         // Open references to pages, if we should.
         if (this->IsHeapPhysicalAddress(phys_addr)) {
@@ -5658,8 +5677,11 @@ Result KPageTableBase::Operate(PageLinkedList* page_list, KProcessAddress virt_a
     }
     case OperationType::ChangePermissions:
     case OperationType::ChangePermissionsAndRefresh:
-    case OperationType::ChangePermissionsAndRefreshAndFlush:
+    case OperationType::ChangePermissionsAndRefreshAndFlush: {
+        m_memory->ProtectRegion(*m_impl, virt_addr, num_pages * PageSize,
+                                ConvertToMemoryPermission(properties.perm));
         R_SUCCEED();
+    }
     default:
         UNREACHABLE();
     }
@@ -5687,7 +5709,8 @@ Result KPageTableBase::Operate(PageLinkedList* page_list, KProcessAddress virt_a
             const size_t size{node.GetNumPages() * PageSize};
 
             // Map the pages.
-            m_memory->MapMemoryRegion(*m_impl, virt_addr, size, node.GetAddress());
+            m_memory->MapMemoryRegion(*m_impl, virt_addr, size, node.GetAddress(),
+                                      ConvertToMemoryPermission(properties.perm));
 
             virt_addr += size;
         }

src/core/hle/kernel/k_page_table_base.h

@@ -235,7 +235,8 @@ public:
                                 bool enable_device_address_space_merge, bool from_back,
                                 KMemoryManager::Pool pool, KProcessAddress code_address,
                                 size_t code_size, KSystemResource* system_resource,
-                                KResourceLimit* resource_limit, Core::Memory::Memory& memory);
+                                KResourceLimit* resource_limit, Core::Memory::Memory& memory,
+                                KProcessAddress aslr_space_start);
 
     void Finalize();
 

src/core/hle/kernel/k_process.cpp

@@ -300,7 +300,7 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params, const KPa
             False(params.flags & Svc::CreateProcessFlag::DisableDeviceAddressSpaceMerge);
         R_TRY(m_page_table.Initialize(as_type, enable_aslr, enable_das_merge, !enable_aslr, pool,
                                       params.code_address, params.code_num_pages * PageSize,
-                                      m_system_resource, res_limit, this->GetMemory()));
+                                      m_system_resource, res_limit, this->GetMemory(), 0));
     }
     ON_RESULT_FAILURE_2 {
         m_page_table.Finalize();
@@ -332,7 +332,7 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params, const KPa
 
 Result KProcess::Initialize(const Svc::CreateProcessParameter& params,
                             std::span<const u32> user_caps, KResourceLimit* res_limit,
-                            KMemoryManager::Pool pool) {
+                            KMemoryManager::Pool pool, KProcessAddress aslr_space_start) {
     ASSERT(res_limit != nullptr);
 
     // Set members.
@@ -393,7 +393,7 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params,
             False(params.flags & Svc::CreateProcessFlag::DisableDeviceAddressSpaceMerge);
         R_TRY(m_page_table.Initialize(as_type, enable_aslr, enable_das_merge, !enable_aslr, pool,
                                       params.code_address, code_size, m_system_resource, res_limit,
-                                      this->GetMemory()));
+                                      this->GetMemory(), aslr_space_start));
     }
     ON_RESULT_FAILURE_2 {
         m_page_table.Finalize();
@@ -1128,7 +1128,7 @@ KProcess::KProcess(KernelCore& kernel)
 KProcess::~KProcess() = default;
 
 Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std::size_t code_size,
-                                  bool is_hbl) {
+                                  KProcessAddress aslr_space_start, bool is_hbl) {
     // Create a resource limit for the process.
     const auto physical_memory_size =
         m_kernel.MemoryManager().GetSize(Kernel::KMemoryManager::Pool::Application);
@@ -1179,7 +1179,7 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
         .name = {},
         .version = {},
         .program_id = metadata.GetTitleID(),
-        .code_address = code_address,
+        .code_address = code_address + GetInteger(aslr_space_start),
         .code_num_pages = static_cast<s32>(code_size / PageSize),
         .flags = flag,
         .reslimit = Svc::InvalidHandle,
@@ -1193,7 +1193,7 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
 
     // Initialize for application process.
     R_TRY(this->Initialize(params, metadata.GetKernelCapabilities(), res_limit,
-                           KMemoryManager::Pool::Application));
+                           KMemoryManager::Pool::Application, aslr_space_start));
 
     // Assign remaining properties.
     m_is_hbl = is_hbl;
@@ -1214,6 +1214,17 @@ void KProcess::LoadModule(CodeSet code_set, KProcessAddress base_addr) {
     ReprotectSegment(code_set.CodeSegment(), Svc::MemoryPermission::ReadExecute);
     ReprotectSegment(code_set.RODataSegment(), Svc::MemoryPermission::Read);
     ReprotectSegment(code_set.DataSegment(), Svc::MemoryPermission::ReadWrite);
+
+#ifdef HAS_NCE
+    if (Settings::IsNceEnabled()) {
+        auto& buffer = m_kernel.System().DeviceMemory().buffer;
+        const auto& code = code_set.CodeSegment();
+        const auto& patch = code_set.PatchSegment();
+        buffer.Protect(GetInteger(base_addr + code.addr), code.size, true, true, true);
+        buffer.Protect(GetInteger(base_addr + patch.addr), patch.size, true, true, true);
+        ReprotectSegment(code_set.PatchSegment(), Svc::MemoryPermission::None);
+    }
+#endif
 }
 
 bool KProcess::InsertWatchpoint(KProcessAddress addr, u64 size, DebugWatchpointType type) {