"Merge Tagged PR 12173"

fs: don't enumerate hidden savedata size file

.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,fpr,froms,hda,inout,lod,masia,nam,nax,nce,nd,optin,pullrequests,pullrequest,te,transfered,unstall,uscaled,vas,zink

.github/workflows/verify.yml

@@ -68,6 +68,25 @@ jobs:
         with:
           name: ${{ matrix.type }}
           path: artifacts/
+  build-mac:
+    name: 'test build (macos)'
+    needs: format
+    runs-on: macos-13
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - name: Install dependencies
+        run: |
+          brew install autoconf automake [email protected] ccache ffmpeg fmt glslang hidapi libtool libusb lz4 ninja nlohmann-json openssl pkg-config qt@5 sdl2 speexdsp zlib zlib zstd
+      - name: Build
+        run: |
+          mkdir build
+          cd build
+          export Qt5_DIR="/usr/local/opt/qt@5/lib/cmake"
+          cmake .. -GNinja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DYUZU_USE_BUNDLED_VCPKG=OFF -DYUZU_TESTS=OFF -DENABLE_WEB_SERVICE=OFF -DENABLE_LIBUSB=OFF
+          ninja
   build-msvc:
     name: 'test build (windows, msvc)'
     needs: format

.gitmodules

@@ -61,3 +61,6 @@
 [submodule "simpleini"]
 	path = externals/simpleini
 	url = https://github.com/brofield/simpleini.git
+[submodule "oaknut"]
+	path = externals/oaknut
+	url = https://github.com/merryhime/oaknut

.reuse/dep5

@@ -151,3 +151,7 @@ License: GPL-3.0-or-later
 Files: externals/stb/*
 Copyright: Sean Barrett
 License: MIT
+
+Files: externals/gamemode/*
+Copyright: Copyright 2017-2019 Feral Interactive
+License: BSD-3-Clause

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
 # ===========================
 
@@ -338,6 +343,10 @@ if(ENABLE_OPENSSL)
     find_package(OpenSSL 1.1.1 REQUIRED)
 endif()
 
+if (UNIX AND NOT APPLE)
+    find_package(gamemode 1.7 MODULE)
+endif()
+
 # Please consider this as a stub
 if(ENABLE_QT6 AND Qt6_LOCATION)
     list(APPEND CMAKE_PREFIX_PATH "${Qt6_LOCATION}")

CMakeModules/Findgamemode.cmake

@@ -0,0 +1,15 @@
+# SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+find_package(PkgConfig QUIET)
+pkg_search_module(GAMEMODE QUIET IMPORTED_TARGET gamemode)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(gamemode
+    REQUIRED_VARS GAMEMODE_INCLUDEDIR
+    VERSION_VAR GAMEMODE_VERSION
+)
+
+if (gamemode_FOUND AND NOT TARGET gamemode::headers)
+    add_library(gamemode::headers ALIAS PkgConfig::GAMEMODE)
+endif()

dist/72-yuzu-input.rules

@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Allow systemd-logind to manage user access to hidraw with this file
+# On most systems, this file should be installed to /etc/udev/rules.d/72-yuzu-input.rules
+# Consult your distro if this is not the case
+
+# Switch Pro Controller (USB/Bluetooth)
+KERNEL=="hidraw*", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="2009", MODE="0660", TAG+="uaccess"
+KERNEL=="hidraw*", KERNELS=="*057e:2009*", MODE="0660", TAG+="uaccess"
+
+# Joy-Con L (Bluetooth)
+KERNEL=="hidraw*", KERNELS=="*057e:2006*", MODE="0660", TAG+="uaccess"
+
+# Joy-Con R (Bluetooth)
+KERNEL=="hidraw*", KERNELS=="*057e:2007*", MODE="0660", TAG+="uaccess"
+
+# Joy-Con Charging Grip (USB)
+KERNEL=="hidraw*", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="200e", MODE="0660", TAG+="uaccess"

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)
@@ -189,6 +193,12 @@ if (ANDROID)
    endif()
 endif()
 
+if (UNIX AND NOT APPLE AND NOT TARGET gamemode::headers)
+    add_library(gamemode INTERFACE)
+    target_include_directories(gamemode INTERFACE gamemode)
+    add_library(gamemode::headers ALIAS gamemode)
+endif()
+
 # Breakpad
 # https://github.com/microsoft/vcpkg/blob/master/ports/breakpad/CMakeLists.txt
 if (YUZU_CRASH_DUMPS AND NOT TARGET libbreakpad_client)

externals/gamemode/gamemode_client.h

@@ -0,0 +1,376 @@
+/*
+
+Copyright (c) 2017-2019, Feral Interactive
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+ * Neither the name of Feral Interactive nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+ */
+#ifndef CLIENT_GAMEMODE_H
+#define CLIENT_GAMEMODE_H
+/*
+ * GameMode supports the following client functions
+ * Requests are refcounted in the daemon
+ *
+ * int gamemode_request_start() - Request gamemode starts
+ *   0 if the request was sent successfully
+ *   -1 if the request failed
+ *
+ * int gamemode_request_end() - Request gamemode ends
+ *   0 if the request was sent successfully
+ *   -1 if the request failed
+ *
+ * GAMEMODE_AUTO can be defined to make the above two functions apply during static init and
+ * destruction, as appropriate. In this configuration, errors will be printed to stderr
+ *
+ * int gamemode_query_status() - Query the current status of gamemode
+ *   0 if gamemode is inactive
+ *   1 if gamemode is active
+ *   2 if gamemode is active and this client is registered
+ *   -1 if the query failed
+ *
+ * int gamemode_request_start_for(pid_t pid) - Request gamemode starts for another process
+ *   0 if the request was sent successfully
+ *   -1 if the request failed
+ *   -2 if the request was rejected
+ *
+ * int gamemode_request_end_for(pid_t pid) - Request gamemode ends for another process
+ *   0 if the request was sent successfully
+ *   -1 if the request failed
+ *   -2 if the request was rejected
+ *
+ * int gamemode_query_status_for(pid_t pid) - Query status of gamemode for another process
+ *   0 if gamemode is inactive
+ *   1 if gamemode is active
+ *   2 if gamemode is active and this client is registered
+ *   -1 if the query failed
+ *
+ * const char* gamemode_error_string() - Get an error string
+ *   returns a string describing any of the above errors
+ *
+ * Note: All the above requests can be blocking - dbus requests can and will block while the daemon
+ * handles the request. It is not recommended to make these calls in performance critical code
+ */
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#include <dlfcn.h>
+#include <string.h>
+
+#include <assert.h>
+
+#include <sys/types.h>
+
+static char internal_gamemode_client_error_string[512] = { 0 };
+
+/**
+ * Load libgamemode dynamically to dislodge us from most dependencies.
+ * This allows clients to link and/or use this regardless of runtime.
+ * See SDL2 for an example of the reasoning behind this in terms of
+ * dynamic versioning as well.
+ */
+static volatile int internal_libgamemode_loaded = 1;
+
+/* Typedefs for the functions to load */
+typedef int (*api_call_return_int)(void);
+typedef const char *(*api_call_return_cstring)(void);
+typedef int (*api_call_pid_return_int)(pid_t);
+
+/* Storage for functors */
+static api_call_return_int REAL_internal_gamemode_request_start = NULL;
+static api_call_return_int REAL_internal_gamemode_request_end = NULL;
+static api_call_return_int REAL_internal_gamemode_query_status = NULL;
+static api_call_return_cstring REAL_internal_gamemode_error_string = NULL;
+static api_call_pid_return_int REAL_internal_gamemode_request_start_for = NULL;
+static api_call_pid_return_int REAL_internal_gamemode_request_end_for = NULL;
+static api_call_pid_return_int REAL_internal_gamemode_query_status_for = NULL;
+
+/**
+ * Internal helper to perform the symbol binding safely.
+ *
+ * Returns 0 on success and -1 on failure
+ */
+__attribute__((always_inline)) static inline int internal_bind_libgamemode_symbol(
+    void *handle, const char *name, void **out_func, size_t func_size, bool required)
+{
+	void *symbol_lookup = NULL;
+	char *dl_error = NULL;
+
+	/* Safely look up the symbol */
+	symbol_lookup = dlsym(handle, name);
+	dl_error = dlerror();
+	if (required && (dl_error || !symbol_lookup)) {
+		snprintf(internal_gamemode_client_error_string,
+		         sizeof(internal_gamemode_client_error_string),
+		         "dlsym failed - %s",
+		         dl_error);
+		return -1;
+	}
+
+	/* Have the symbol correctly, copy it to make it usable */
+	memcpy(out_func, &symbol_lookup, func_size);
+	return 0;
+}
+
+/**
+ * Loads libgamemode and needed functions
+ *
+ * Returns 0 on success and -1 on failure
+ */
+__attribute__((always_inline)) static inline int internal_load_libgamemode(void)
+{
+	/* We start at 1, 0 is a success and -1 is a fail */
+	if (internal_libgamemode_loaded != 1) {
+		return internal_libgamemode_loaded;
+	}
+
+	/* Anonymous struct type to define our bindings */
+	struct binding {
+		const char *name;
+		void **functor;
+		size_t func_size;
+		bool required;
+	} bindings[] = {
+		{ "real_gamemode_request_start",
+		  (void **)&REAL_internal_gamemode_request_start,
+		  sizeof(REAL_internal_gamemode_request_start),
+		  true },
+		{ "real_gamemode_request_end",
+		  (void **)&REAL_internal_gamemode_request_end,
+		  sizeof(REAL_internal_gamemode_request_end),
+		  true },
+		{ "real_gamemode_query_status",
+		  (void **)&REAL_internal_gamemode_query_status,
+		  sizeof(REAL_internal_gamemode_query_status),
+		  false },
+		{ "real_gamemode_error_string",
+		  (void **)&REAL_internal_gamemode_error_string,
+		  sizeof(REAL_internal_gamemode_error_string),
+		  true },
+		{ "real_gamemode_request_start_for",
+		  (void **)&REAL_internal_gamemode_request_start_for,
+		  sizeof(REAL_internal_gamemode_request_start_for),
+		  false },
+		{ "real_gamemode_request_end_for",
+		  (void **)&REAL_internal_gamemode_request_end_for,
+		  sizeof(REAL_internal_gamemode_request_end_for),
+		  false },
+		{ "real_gamemode_query_status_for",
+		  (void **)&REAL_internal_gamemode_query_status_for,
+		  sizeof(REAL_internal_gamemode_query_status_for),
+		  false },
+	};
+
+	void *libgamemode = NULL;
+
+	/* Try and load libgamemode */
+	libgamemode = dlopen("libgamemode.so.0", RTLD_NOW);
+	if (!libgamemode) {
+		/* Attempt to load unversioned library for compatibility with older
+		 * versions (as of writing, there are no ABI changes between the two -
+		 * this may need to change if ever ABI-breaking changes are made) */
+		libgamemode = dlopen("libgamemode.so", RTLD_NOW);
+		if (!libgamemode) {
+			snprintf(internal_gamemode_client_error_string,
+			         sizeof(internal_gamemode_client_error_string),
+			         "dlopen failed - %s",
+			         dlerror());
+			internal_libgamemode_loaded = -1;
+			return -1;
+		}
+	}
+
+	/* Attempt to bind all symbols */
+	for (size_t i = 0; i < sizeof(bindings) / sizeof(bindings[0]); i++) {
+		struct binding *binder = &bindings[i];
+
+		if (internal_bind_libgamemode_symbol(libgamemode,
+		                                     binder->name,
+		                                     binder->functor,
+		                                     binder->func_size,
+		                                     binder->required)) {
+			internal_libgamemode_loaded = -1;
+			return -1;
+		};
+	}
+
+	/* Success */
+	internal_libgamemode_loaded = 0;
+	return 0;
+}
+
+/**
+ * Redirect to the real libgamemode
+ */
+__attribute__((always_inline)) static inline const char *gamemode_error_string(void)
+{
+	/* If we fail to load the system gamemode, or we have an error string already, return our error
+	 * string instead of diverting to the system version */
+	if (internal_load_libgamemode() < 0 || internal_gamemode_client_error_string[0] != '\0') {
+		return internal_gamemode_client_error_string;
+	}
+
+	/* Assert for static analyser that the function is not NULL */
+	assert(REAL_internal_gamemode_error_string != NULL);
+
+	return REAL_internal_gamemode_error_string();
+}
+
+/**
+ * Redirect to the real libgamemode
+ * Allow automatically requesting game mode
+ * Also prints errors as they happen.
+ */
+#ifdef GAMEMODE_AUTO
+__attribute__((constructor))
+#else
+__attribute__((always_inline)) static inline
+#endif
+int gamemode_request_start(void)
+{
+	/* Need to load gamemode */
+	if (internal_load_libgamemode() < 0) {
+#ifdef GAMEMODE_AUTO
+		fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
+#endif
+		return -1;
+	}
+
+	/* Assert for static analyser that the function is not NULL */
+	assert(REAL_internal_gamemode_request_start != NULL);
+
+	if (REAL_internal_gamemode_request_start() < 0) {
+#ifdef GAMEMODE_AUTO
+		fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
+#endif
+		return -1;
+	}
+
+	return 0;
+}
+
+/* Redirect to the real libgamemode */
+#ifdef GAMEMODE_AUTO
+__attribute__((destructor))
+#else
+__attribute__((always_inline)) static inline
+#endif
+int gamemode_request_end(void)
+{
+	/* Need to load gamemode */
+	if (internal_load_libgamemode() < 0) {
+#ifdef GAMEMODE_AUTO
+		fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
+#endif
+		return -1;
+	}
+
+	/* Assert for static analyser that the function is not NULL */
+	assert(REAL_internal_gamemode_request_end != NULL);
+
+	if (REAL_internal_gamemode_request_end() < 0) {
+#ifdef GAMEMODE_AUTO
+		fprintf(stderr, "gamemodeauto: %s\n", gamemode_error_string());
+#endif
+		return -1;
+	}
+
+	return 0;
+}
+
+/* Redirect to the real libgamemode */
+__attribute__((always_inline)) static inline int gamemode_query_status(void)
+{
+	/* Need to load gamemode */
+	if (internal_load_libgamemode() < 0) {
+		return -1;
+	}
+
+	if (REAL_internal_gamemode_query_status == NULL) {
+		snprintf(internal_gamemode_client_error_string,
+		         sizeof(internal_gamemode_client_error_string),
+		         "gamemode_query_status missing (older host?)");
+		return -1;
+	}
+
+	return REAL_internal_gamemode_query_status();
+}
+
+/* Redirect to the real libgamemode */
+__attribute__((always_inline)) static inline int gamemode_request_start_for(pid_t pid)
+{
+	/* Need to load gamemode */
+	if (internal_load_libgamemode() < 0) {
+		return -1;
+	}
+
+	if (REAL_internal_gamemode_request_start_for == NULL) {
+		snprintf(internal_gamemode_client_error_string,
+		         sizeof(internal_gamemode_client_error_string),
+		         "gamemode_request_start_for missing (older host?)");
+		return -1;
+	}
+
+	return REAL_internal_gamemode_request_start_for(pid);
+}
+
+/* Redirect to the real libgamemode */
+__attribute__((always_inline)) static inline int gamemode_request_end_for(pid_t pid)
+{
+	/* Need to load gamemode */
+	if (internal_load_libgamemode() < 0) {
+		return -1;
+	}
+
+	if (REAL_internal_gamemode_request_end_for == NULL) {
+		snprintf(internal_gamemode_client_error_string,
+		         sizeof(internal_gamemode_client_error_string),
+		         "gamemode_request_end_for missing (older host?)");
+		return -1;
+	}
+
+	return REAL_internal_gamemode_request_end_for(pid);
+}
+
+/* Redirect to the real libgamemode */
+__attribute__((always_inline)) static inline int gamemode_query_status_for(pid_t pid)
+{
+	/* Need to load gamemode */
+	if (internal_load_libgamemode() < 0) {
+		return -1;
+	}
+
+	if (REAL_internal_gamemode_query_status_for == NULL) {
+		snprintf(internal_gamemode_client_error_string,
+		         sizeof(internal_gamemode_client_error_string),
+		         "gamemode_query_status_for missing (older host?)");
+		return -1;
+	}
+
+	return REAL_internal_gamemode_query_status_for(pid);
+}
+
+#endif // CLIENT_GAMEMODE_H

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

@@ -299,6 +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.utils.NativeConfig
 
 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()
-            NativeConfig.saveSettings()
-        } 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

@@ -77,6 +77,15 @@ abstract class SettingsItem(
                     "%"
                 )
             )
+            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

@@ -19,12 +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 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
@@ -53,10 +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
         ) {
@@ -127,12 +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
@@ -141,16 +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()
         }
     }
 
@@ -160,9 +145,6 @@ 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)
@@ -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/fragments/AddGameFolderDialogFragment.kt

@@ -0,0 +1,56 @@
+// 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
+import org.yuzu.yuzu_emu.model.HomeViewModel
+
+class AddGameFolderDialogFragment : DialogFragment() {
+    private val homeViewModel: HomeViewModel by activityViewModels()
+    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)
+                homeViewModel.setGamesDirSelected(true)
+                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/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

@@ -4,6 +4,7 @@
 package org.yuzu.yuzu_emu.fragments
 
 import android.Manifest
+import android.annotation.SuppressLint
 import android.content.Intent
 import android.os.Build
 import android.os.Bundle
@@ -42,7 +43,7 @@ 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() {
@@ -75,6 +76,8 @@ class SetupFragment : Fragment() {
         return binding.root
     }
 
+    // This is using the correct scope, lint is just acting up
+    @SuppressLint("UnsafeRepeatOnLifecycleDetector")
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         mainActivity = requireActivity() as MainActivity
 
@@ -184,11 +187,7 @@ 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
@@ -210,12 +209,24 @@ class SetupFragment : Fragment() {
             )
         }
 
-        viewLifecycleOwner.lifecycleScope.launch {
-            repeatOnLifecycle(Lifecycle.State.CREATED) {
-                homeViewModel.shouldPageForward.collect {
-                    if (it) {
-                        pageForward()
-                        homeViewModel.setShouldPageForward(false)
+        viewLifecycleOwner.lifecycleScope.apply {
+            launch {
+                repeatOnLifecycle(Lifecycle.State.CREATED) {
+                    homeViewModel.shouldPageForward.collect {
+                        if (it) {
+                            pageForward()
+                            homeViewModel.setShouldPageForward(false)
+                        }
+                    }
+                }
+            }
+            launch {
+                repeatOnLifecycle(Lifecycle.State.CREATED) {
+                    homeViewModel.gamesDirSelected.collect {
+                        if (it) {
+                            gamesDirCallback.onStepCompleted()
+                            homeViewModel.setGamesDirSelected(false)
+                        }
                     }
                 }
             }
@@ -343,7 +354,6 @@ class SetupFragment : Fragment() {
         registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) { result ->
             if (result != null) {
                 mainActivity.processGamesDir(result)
-                gamesDirCallback.onStepCompleted()
             }
         }
 

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(true)
+            }
+        }
+
+    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 +3,10 @@
 
 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
+import kotlinx.coroutines.flow.asStateFlow
 
 class HomeViewModel : ViewModel() {
     val navigationVisible: StateFlow<Pair<Boolean, Boolean>> get() = _navigationVisible
@@ -23,13 +18,8 @@ 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 ?: ""
-    )
+    private val _gamesDirSelected = MutableStateFlow(false)
+    val gamesDirSelected get() = _gamesDirSelected.asStateFlow()
 
     var navigatedToSetup = false
 
@@ -51,8 +41,7 @@ class HomeViewModel : ViewModel() {
         _shouldPageForward.value = pageForward
     }
 
-    fun setGamesDir(activity: FragmentActivity, dir: String) {
-        ViewModelProvider(activity)[GamesViewModel::class.java].reloadGames(true)
-        _gamesDir.value = dir
+    fun setGamesDirSelected(selected: Boolean) {
+        _gamesDirSelected.value = selected
     }
 }

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

@@ -40,6 +40,7 @@ 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.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
@@ -252,6 +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()
@@ -293,20 +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 =

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/NativeConfig.kt

@@ -3,6 +3,8 @@
 
 package org.yuzu.yuzu_emu.utils
 
+import org.yuzu.yuzu_emu.model.GameDir
+
 object NativeConfig {
     /**
      * Creates a Config object and opens the emulation config.
@@ -54,4 +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/android_config.cpp

@@ -34,6 +34,7 @@ void AndroidConfig::SaveAllValues() {
 void AndroidConfig::ReadAndroidValues() {
     if (global) {
         ReadAndroidUIValues();
+        ReadUIValues();
     }
 }
 
@@ -45,9 +46,35 @@ void AndroidConfig::ReadAndroidUIValues() {
     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();
@@ -61,6 +88,29 @@ void AndroidConfig::SaveAndroidUIValues() {
     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)) {

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

@@ -19,9 +19,9 @@ protected:
     void ReadAndroidUIValues();
     void ReadHidbusValues() override {}
     void ReadDebugControlValues() override {}
-    void ReadPathValues() override {}
+    void ReadPathValues() override;
     void ReadShortcutValues() override {}
-    void ReadUIValues() override {}
+    void ReadUIValues() override;
     void ReadUIGamelistValues() override {}
     void ReadUILayoutValues() override {}
     void ReadMultiplayerValues() override {}
@@ -30,9 +30,9 @@ protected:
     void SaveAndroidUIValues();
     void SaveHidbusValues() override {}
     void SaveDebugControlValues() override {}
-    void SavePathValues() override {}
+    void SavePathValues() override;
     void SaveShortcutValues() override {}
-    void SaveUIValues() override {}
+    void SaveUIValues() override;
     void SaveUIGamelistValues() override {}
     void SaveUILayoutValues() override {}
     void SaveMultiplayerValues() override {}

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/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

@@ -123,9 +123,6 @@ int EmulationSession::InstallFileToNand(std::string filename, std::string file_e
         ErrorFilenameExtension = 4,
     };
 
-    m_system.SetContentProvider(std::make_unique<FileSys::ContentProviderUnion>());
-    m_system.GetFileSystemController().CreateFactories(*m_vfs);
-
     [[maybe_unused]] std::shared_ptr<FileSys::NSP> nsp;
     if (file_extension == "nsp") {
         nsp = std::make_shared<FileSys::NSP>(m_vfs->OpenFile(filename, FileSys::Mode::Read));
@@ -694,6 +691,14 @@ 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

@@ -11,6 +11,7 @@
 #include "common/settings.h"
 #include "frontend_common/config.h"
 #include "jni/android_common/android_common.h"
+#include "jni/id_cache.h"
 
 std::unique_ptr<AndroidConfig> config;
 
@@ -253,4 +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/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>
@@ -124,6 +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>
@@ -185,6 +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>
 
@@ -257,6 +264,7 @@
     <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 -->
@@ -416,6 +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/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
@@ -174,6 +182,15 @@ if(ANDROID)
     )
 endif()
 
+if (UNIX AND NOT APPLE)
+  target_sources(common PRIVATE
+    linux/gamemode.cpp
+    linux/gamemode.h
+  )
+
+  target_link_libraries(common PRIVATE gamemode::headers)
+endif()
+
 if(ARCHITECTURE_x86_64)
     target_sources(common
         PRIVATE
@@ -191,7 +208,7 @@ 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 +21,22 @@
 #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"
 
+#ifndef MAP_NORESERVE
+#define MAP_NORESERVE 0
+#endif
+
 #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 +148,7 @@ 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 +167,7 @@ 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 +193,11 @@ 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 +365,65 @@ 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) {
+#if defined(__FreeBSD__)
+    void* virtual_base =
+        mmap(nullptr, virtual_size, PROT_READ | PROT_WRITE,
+             MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | MAP_ALIGNED_SUPER, -1, 0);
+
+    if (virtual_base != MAP_FAILED) {
+        return virtual_base;
+    }
+#endif
+
+    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_)
@@ -402,29 +473,16 @@ public:
         }
 
         // Virtual memory initialization
-#if defined(__FreeBSD__)
-        virtual_base =
-            static_cast<u8*>(mmap(nullptr, virtual_size, PROT_NONE,
-                                  MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER, -1, 0));
-        if (virtual_base == MAP_FAILED) {
-            virtual_base = static_cast<u8*>(
-                mmap(nullptr, virtual_size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
-            if (virtual_base == MAP_FAILED) {
-                LOG_CRITICAL(HW_Memory, "mmap failed: {}", strerror(errno));
-                throw std::bad_alloc{};
-            }
-        }
-#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{};
         }
+#if defined(__linux__)
         madvise(virtual_base, virtual_size, MADV_HUGEPAGE);
 #endif
 
-        placeholders.add({0, virtual_size});
+        free_manager.SetAddressSpace(virtual_base, virtual_size);
         good = true;
     }
 
@@ -432,14 +490,29 @@ 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 +520,54 @@ 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 +582,29 @@ 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 +617,13 @@ 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 +636,16 @@ 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 +664,8 @@ 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 +674,7 @@ 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 +687,22 @@ 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/linux/gamemode.cpp

@@ -0,0 +1,40 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <gamemode_client.h>
+
+#include "common/linux/gamemode.h"
+#include "common/logging/log.h"
+#include "common/settings.h"
+
+namespace Common::Linux {
+
+void StartGamemode() {
+    if (Settings::values.enable_gamemode) {
+        if (gamemode_request_start() < 0) {
+            LOG_WARNING(Frontend, "Failed to start gamemode: {}", gamemode_error_string());
+        } else {
+            LOG_INFO(Frontend, "Started gamemode");
+        }
+    }
+}
+
+void StopGamemode() {
+    if (Settings::values.enable_gamemode) {
+        if (gamemode_request_end() < 0) {
+            LOG_WARNING(Frontend, "Failed to stop gamemode: {}", gamemode_error_string());
+        } else {
+            LOG_INFO(Frontend, "Stopped gamemode");
+        }
+    }
+}
+
+void SetGamemodeState(bool state) {
+    if (state) {
+        StartGamemode();
+    } else {
+        StopGamemode();
+    }
+}
+
+} // namespace Common::Linux

src/common/linux/gamemode.h

@@ -0,0 +1,24 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+namespace Common::Linux {
+
+/**
+ * Start the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ */
+void StartGamemode();
+
+/**
+ * Stop the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ */
+void StopGamemode();
+
+/**
+ * Start or stop the (Feral Interactive) Linux gamemode if it is installed and it is activated
+ * @param state The new state the gamemode should have
+ */
+void SetGamemodeState(bool state);
+
+} // namespace Common::Linux

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 +156,26 @@ 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;
+    if (is_nce_selected && !IsFastmemEnabled()) {
+        LOG_WARNING(Common, "Fastmem is required to natively execute code in a performant manner, "
+                            "falling back to Dynarmic");
+    }
+    if (is_nce_selected && !is_39bit) {
+        LOG_WARNING(
+            Common,
+            "Program does not utilize 39-bit address space, unable to natively execute code");
+    }
+    is_nce_enabled = IsFastmemEnabled() && is_nce_selected && is_39bit;
+}
+
+bool IsNceEnabled() {
+    return is_nce_enabled;
+}
+
 bool IsDockedMode() {
     return values.use_docked_mode.GetValue() == Settings::ConsoleMode::Docked;
 }
@@ -219,6 +240,8 @@ const char* TranslateCategory(Category category) {
         return "Services";
     case Category::Paths:
         return "Paths";
+    case Category::Linux:
+        return "Linux";
     case Category::MaxEnum:
         break;
     }

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 +180,20 @@ struct Values {
                                              &use_speed_limit};
 
     // Cpu
+    SwitchableSetting<CpuBackend, true> cpu_backend{linkage,
+#ifdef HAS_NCE
+                                                    CpuBackend::Nce,
+#else
+                                                    CpuBackend::Dynarmic,
+#endif
+                                                    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};
@@ -429,6 +444,9 @@ struct Values {
                                                    true,
                                                    true};
 
+    // Linux
+    SwitchableSetting<bool> enable_gamemode{linkage, true, "enable_gamemode", Category::Linux};
+
     // Controls
     InputSetting<std::array<PlayerInput, 10>> players;
 
@@ -566,6 +584,8 @@ bool IsGPULevelExtreme();
 bool IsGPULevelHigh();
 
 bool IsFastmemEnabled();
+void SetNceEnabled(bool is_64bit);
+bool IsNceEnabled();
 
 bool IsDockedMode();
 

src/common/settings_common.h

@@ -41,6 +41,7 @@ enum class Category : u32 {
     Multiplayer,
     Services,
     Paths,
+    Linux,
     MaxEnum,
 };
 

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

@@ -4,6 +4,8 @@
 add_library(core STATIC
     arm/arm_interface.h
     arm/arm_interface.cpp
+    arm/debug.cpp
+    arm/debug.h
     arm/exclusive_monitor.cpp
     arm/exclusive_monitor.h
     arm/symbols.cpp
@@ -249,10 +251,16 @@ add_library(core STATIC
     hle/kernel/k_hardware_timer.h
     hle/kernel/k_interrupt_manager.cpp
     hle/kernel/k_interrupt_manager.h
+    hle/kernel/k_light_client_session.cpp
+    hle/kernel/k_light_client_session.h
     hle/kernel/k_light_condition_variable.cpp
     hle/kernel/k_light_condition_variable.h
     hle/kernel/k_light_lock.cpp
     hle/kernel/k_light_lock.h
+    hle/kernel/k_light_server_session.cpp
+    hle/kernel/k_light_server_session.h
+    hle/kernel/k_light_session.cpp
+    hle/kernel/k_light_session.h
     hle/kernel/k_memory_block.h
     hle/kernel/k_memory_block_manager.cpp
     hle/kernel/k_memory_block_manager.h
@@ -541,6 +549,8 @@ add_library(core STATIC
     hle/service/hid/xcd.cpp
     hle/service/hid/xcd.h
     hle/service/hid/errors.h
+    hle/service/hid/controllers/applet_resource.cpp
+    hle/service/hid/controllers/applet_resource.h
     hle/service/hid/controllers/console_six_axis.cpp
     hle/service/hid/controllers/console_six_axis.h
     hle/service/hid/controllers/controller_base.cpp
@@ -762,6 +772,12 @@ add_library(core STATIC
     hle/service/kernel_helpers.h
     hle/service/mutex.cpp
     hle/service/mutex.h
+    hle/service/ro/ro_nro_utils.cpp
+    hle/service/ro/ro_nro_utils.h
+    hle/service/ro/ro_results.h
+    hle/service/ro/ro_types.h
+    hle/service/ro/ro.cpp
+    hle/service/ro/ro.h
     hle/service/server_manager.cpp
     hle/service/server_manager.h
     hle/service/service.cpp
@@ -926,6 +942,22 @@ 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/patcher.cpp
+        arm/nce/patcher.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

@@ -1,229 +1,32 @@
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include <map>
-#include <optional>
-
-#include "common/bit_field.h"
-#include "common/common_types.h"
-#include "common/demangle.h"
 #include "common/logging/log.h"
 #include "core/arm/arm_interface.h"
-#include "core/arm/symbols.h"
+#include "core/arm/debug.h"
 #include "core/core.h"
-#include "core/debugger/debugger.h"
 #include "core/hle/kernel/k_process.h"
-#include "core/hle/kernel/k_thread.h"
-#include "core/hle/kernel/svc.h"
-#include "core/loader/loader.h"
-#include "core/memory.h"
 
 namespace Core {
 
-constexpr u64 SEGMENT_BASE = 0x7100000000ull;
+void ArmInterface::LogBacktrace(const Kernel::KProcess* process) const {
+    Kernel::Svc::ThreadContext ctx;
+    this->GetContext(ctx);
 
-std::vector<ARM_Interface::BacktraceEntry> ARM_Interface::GetBacktraceFromContext(
-    Core::System& system, const ARM_Interface::ThreadContext32& ctx) {
-    std::vector<BacktraceEntry> out;
-    auto& memory = system.ApplicationMemory();
-
-    const auto& reg = ctx.cpu_registers;
-    u32 pc = reg[15], lr = reg[14], fp = reg[11];
-    out.push_back({"", 0, pc, 0, ""});
-
-    // fp (= r11) points to the last frame record.
-    // Frame records are two words long:
-    // fp+0 : pointer to previous frame record
-    // fp+4 : value of lr for frame
-    for (size_t i = 0; i < 256; i++) {
-        out.push_back({"", 0, lr, 0, ""});
-        if (!fp || (fp % 4 != 0) || !memory.IsValidVirtualAddressRange(fp, 8)) {
-            break;
-        }
-        lr = memory.Read32(fp + 4);
-        fp = memory.Read32(fp);
-    }
-
-    SymbolicateBacktrace(system, out);
-
-    return out;
-}
-
-std::vector<ARM_Interface::BacktraceEntry> ARM_Interface::GetBacktraceFromContext(
-    Core::System& system, const ARM_Interface::ThreadContext64& ctx) {
-    std::vector<BacktraceEntry> out;
-    auto& memory = system.ApplicationMemory();
-
-    const auto& reg = ctx.cpu_registers;
-    u64 pc = ctx.pc, lr = reg[30], fp = reg[29];
-
-    out.push_back({"", 0, pc, 0, ""});
-
-    // fp (= x29) points to the previous frame record.
-    // Frame records are two words long:
-    // fp+0 : pointer to previous frame record
-    // fp+8 : value of lr for frame
-    for (size_t i = 0; i < 256; i++) {
-        out.push_back({"", 0, lr, 0, ""});
-        if (!fp || (fp % 4 != 0) || !memory.IsValidVirtualAddressRange(fp, 16)) {
-            break;
-        }
-        lr = memory.Read64(fp + 8);
-        fp = memory.Read64(fp);
-    }
-
-    SymbolicateBacktrace(system, out);
-
-    return out;
-}
-
-void ARM_Interface::SymbolicateBacktrace(Core::System& system, std::vector<BacktraceEntry>& out) {
-    std::map<VAddr, std::string> modules;
-    auto& loader{system.GetAppLoader()};
-    if (loader.ReadNSOModules(modules) != Loader::ResultStatus::Success) {
-        return;
-    }
-
-    std::map<std::string, Symbols::Symbols> symbols;
-    for (const auto& module : modules) {
-        symbols.insert_or_assign(module.second,
-                                 Symbols::GetSymbols(module.first, system.ApplicationMemory(),
-                                                     system.ApplicationProcess()->Is64Bit()));
-    }
-
-    for (auto& entry : out) {
-        VAddr base = 0;
-        for (auto iter = modules.rbegin(); iter != modules.rend(); ++iter) {
-            const auto& module{*iter};
-            if (entry.original_address >= module.first) {
-                entry.module = module.second;
-                base = module.first;
-                break;
-            }
-        }
-
-        entry.offset = entry.original_address - base;
-        entry.address = SEGMENT_BASE + entry.offset;
-
-        if (entry.module.empty()) {
-            entry.module = "unknown";
-        }
-
-        const auto symbol_set = symbols.find(entry.module);
-        if (symbol_set != symbols.end()) {
-            const auto symbol = Symbols::GetSymbolName(symbol_set->second, entry.offset);
-            if (symbol) {
-                entry.name = Common::DemangleSymbol(*symbol);
-            }
-        }
-    }
-}
-
-std::vector<ARM_Interface::BacktraceEntry> ARM_Interface::GetBacktrace() const {
-    if (GetArchitecture() == Architecture::Aarch64) {
-        ThreadContext64 ctx;
-        SaveContext(ctx);
-        return GetBacktraceFromContext(system, ctx);
-    } else {
-        ThreadContext32 ctx;
-        SaveContext(ctx);
-        return GetBacktraceFromContext(system, ctx);
-    }
-}
-
-void ARM_Interface::LogBacktrace() const {
-    const VAddr sp = GetSP();
-    const VAddr pc = GetPC();
-    LOG_ERROR(Core_ARM, "Backtrace, sp={:016X}, pc={:016X}", sp, pc);
+    LOG_ERROR(Core_ARM, "Backtrace, sp={:016X}, pc={:016X}", ctx.sp, ctx.pc);
     LOG_ERROR(Core_ARM, "{:20}{:20}{:20}{:20}{}", "Module Name", "Address", "Original Address",
               "Offset", "Symbol");
     LOG_ERROR(Core_ARM, "");
-    const auto backtrace = GetBacktrace();
+    const auto backtrace = GetBacktraceFromContext(process, ctx);
     for (const auto& entry : backtrace) {
         LOG_ERROR(Core_ARM, "{:20}{:016X}    {:016X}    {:016X}    {}", entry.module, entry.address,
                   entry.original_address, entry.offset, entry.name);
     }
 }
 
-void ARM_Interface::Run() {
-    using Kernel::StepState;
-    using Kernel::SuspendType;
-
-    while (true) {
-        Kernel::KThread* current_thread{Kernel::GetCurrentThreadPointer(system.Kernel())};
-        HaltReason hr{};
-
-        // If the thread is scheduled for termination, exit the thread.
-        if (current_thread->HasDpc()) {
-            if (current_thread->IsTerminationRequested()) {
-                current_thread->Exit();
-                UNREACHABLE();
-            }
-        }
-
-        // Notify the debugger and go to sleep if a step was performed
-        // and this thread has been scheduled again.
-        if (current_thread->GetStepState() == StepState::StepPerformed) {
-            system.GetDebugger().NotifyThreadStopped(current_thread);
-            current_thread->RequestSuspend(SuspendType::Debug);
-            break;
-        }
-
-        // Otherwise, run the thread.
-        system.EnterCPUProfile();
-        if (current_thread->GetStepState() == StepState::StepPending) {
-            hr = StepJit();
-
-            if (True(hr & HaltReason::StepThread)) {
-                current_thread->SetStepState(StepState::StepPerformed);
-            }
-        } else {
-            hr = RunJit();
-        }
-        system.ExitCPUProfile();
-
-        // Notify the debugger and go to sleep if a breakpoint was hit,
-        // or if the thread is unable to continue for any reason.
-        if (True(hr & HaltReason::InstructionBreakpoint) || True(hr & HaltReason::PrefetchAbort)) {
-            if (!True(hr & HaltReason::PrefetchAbort)) {
-                RewindBreakpointInstruction();
-            }
-            if (system.DebuggerEnabled()) {
-                system.GetDebugger().NotifyThreadStopped(current_thread);
-            } else {
-                LogBacktrace();
-            }
-            current_thread->RequestSuspend(SuspendType::Debug);
-            break;
-        }
-
-        // Notify the debugger and go to sleep if a watchpoint was hit.
-        if (True(hr & HaltReason::DataAbort)) {
-            if (system.DebuggerEnabled()) {
-                system.GetDebugger().NotifyThreadWatchpoint(current_thread, *HaltedWatchpoint());
-            }
-            current_thread->RequestSuspend(SuspendType::Debug);
-            break;
-        }
-
-        // Handle syscalls and scheduling (this may change the current thread/core)
-        if (True(hr & HaltReason::SupervisorCall)) {
-            Kernel::Svc::Call(system, GetSvcNumber());
-            break;
-        }
-        if (True(hr & HaltReason::BreakLoop) || !uses_wall_clock) {
-            break;
-        }
-    }
-}
-
-void ARM_Interface::LoadWatchpointArray(const WatchpointArray* wp) {
-    watchpoints = wp;
-}
-
-const Kernel::DebugWatchpoint* ARM_Interface::MatchingWatchpoint(
+const Kernel::DebugWatchpoint* ArmInterface::MatchingWatchpoint(
     u64 addr, u64 size, Kernel::DebugWatchpointType access_type) const {
-    if (!watchpoints) {
+    if (!m_watchpoints) {
         return nullptr;
     }
 
@@ -231,7 +34,7 @@ const Kernel::DebugWatchpoint* ARM_Interface::MatchingWatchpoint(
     const u64 end_address{addr + size};
 
     for (size_t i = 0; i < Core::Hardware::NUM_WATCHPOINTS; i++) {
-        const auto& watch{(*watchpoints)[i]};
+        const auto& watch{(*m_watchpoints)[i]};
 
         if (end_address <= GetInteger(watch.start_address)) {
             continue;

src/core/arm/arm_interface.h

@@ -12,20 +12,20 @@
 #include "common/common_types.h"
 #include "core/hardware_properties.h"
 
+#include "core/hle/kernel/svc_types.h"
+
 namespace Common {
 struct PageTable;
 }
 
 namespace Kernel {
-enum class VMAPermission : u8;
 enum class DebugWatchpointType : u8;
 struct DebugWatchpoint;
+class KThread;
+class KProcess;
 } // namespace Kernel
 
 namespace Core {
-class System;
-class CPUInterruptHandler;
-
 using WatchpointArray = std::array<Kernel::DebugWatchpoint, Core::Hardware::NUM_WATCHPOINTS>;
 
 // NOTE: these values match the HaltReason enum in Dynarmic
@@ -40,194 +40,74 @@ enum class HaltReason : u64 {
 DECLARE_ENUM_FLAG_OPERATORS(HaltReason);
 
 enum class Architecture {
-    Aarch32,
-    Aarch64,
+    AArch64,
+    AArch32,
 };
 
 /// Generic ARMv8 CPU interface
-class ARM_Interface {
+class ArmInterface {
 public:
-    YUZU_NON_COPYABLE(ARM_Interface);
-    YUZU_NON_MOVEABLE(ARM_Interface);
+    YUZU_NON_COPYABLE(ArmInterface);
+    YUZU_NON_MOVEABLE(ArmInterface);
 
-    explicit ARM_Interface(System& system_, bool uses_wall_clock_)
-        : system{system_}, uses_wall_clock{uses_wall_clock_} {}
-    virtual ~ARM_Interface() = default;
+    explicit ArmInterface(bool uses_wall_clock) : m_uses_wall_clock{uses_wall_clock} {}
+    virtual ~ArmInterface() = default;
 
-    struct ThreadContext32 {
-        std::array<u32, 16> cpu_registers{};
-        std::array<u32, 64> extension_registers{};
-        u32 cpsr{};
-        u32 fpscr{};
-        u32 fpexc{};
-        u32 tpidr{};
-    };
-    // Internally within the kernel, it expects the AArch32 version of the
-    // thread context to be 344 bytes in size.
-    static_assert(sizeof(ThreadContext32) == 0x150);
+    // Perform any backend-specific initialization.
+    virtual void Initialize() {}
 
-    struct ThreadContext64 {
-        std::array<u64, 31> cpu_registers{};
-        u64 sp{};
-        u64 pc{};
-        u32 pstate{};
-        std::array<u8, 4> padding{};
-        std::array<u128, 32> vector_registers{};
-        u32 fpcr{};
-        u32 fpsr{};
-        u64 tpidr{};
-    };
-    // Internally within the kernel, it expects the AArch64 version of the
-    // thread context to be 800 bytes in size.
-    static_assert(sizeof(ThreadContext64) == 0x320);
+    // Runs the CPU until an event happens.
+    virtual HaltReason RunThread(Kernel::KThread* thread) = 0;
 
-    /// Runs the CPU until an event happens
-    void Run();
+    // Runs the CPU for one instruction or until an event happens.
+    virtual HaltReason StepThread(Kernel::KThread* thread) = 0;
 
-    /// Clear all instruction cache
+    // Admits a backend-specific mechanism to lock the thread context.
+    virtual void LockThread(Kernel::KThread* thread) {}
+    virtual void UnlockThread(Kernel::KThread* thread) {}
+
+    // Clear the entire instruction cache for this CPU.
     virtual void ClearInstructionCache() = 0;
 
-    /**
-     * Clear instruction cache range
-     * @param addr Start address of the cache range to clear
-     * @param size Size of the cache range to clear, starting at addr
-     */
+    // Clear a range of the instruction cache for this CPU.
     virtual void InvalidateCacheRange(u64 addr, std::size_t size) = 0;
 
-    /**
-     * Notifies CPU emulation that the current page table has changed.
-     *  @param new_page_table                 The new page table.
-     *  @param new_address_space_size_in_bits The new usable size of the address space in bits.
-     *                                        This can be either 32, 36, or 39 on official software.
-     */
-    virtual void PageTableChanged(Common::PageTable& new_page_table,
-                                  std::size_t new_address_space_size_in_bits) = 0;
-
-    /**
-     * Set the Program Counter to an address
-     * @param addr Address to set PC to
-     */
-    virtual void SetPC(u64 addr) = 0;
-
-    /*
-     * Get the current Program Counter
-     * @return Returns current PC
-     */
-    virtual u64 GetPC() const = 0;
-
-    /**
-     * Get the current Stack Pointer
-     * @return Returns current SP
-     */
-    virtual u64 GetSP() const = 0;
-
-    /**
-     * Get an ARM register
-     * @param index Register index
-     * @return Returns the value in the register
-     */
-    virtual u64 GetReg(int index) const = 0;
-
-    /**
-     * Set an ARM register
-     * @param index Register index
-     * @param value Value to set register to
-     */
-    virtual void SetReg(int index, u64 value) = 0;
-
-    /**
-     * Gets the value of a specified vector register.
-     *
-     * @param index The index of the vector register.
-     * @return the value within the vector register.
-     */
-    virtual u128 GetVectorReg(int index) const = 0;
-
-    /**
-     * Sets a given value into a vector register.
-     *
-     * @param index The index of the vector register.
-     * @param value The new value to place in the register.
-     */
-    virtual void SetVectorReg(int index, u128 value) = 0;
-
-    /**
-     * Get the current PSTATE register
-     * @return Returns the value of the PSTATE register
-     */
-    virtual u32 GetPSTATE() const = 0;
-
-    /**
-     * Set the current PSTATE register
-     * @param pstate Value to set PSTATE to
-     */
-    virtual void SetPSTATE(u32 pstate) = 0;
-
-    virtual u64 GetTlsAddress() const = 0;
-
-    virtual void SetTlsAddress(u64 address) = 0;
-
-    /**
-     * Gets the value within the TPIDR_EL0 (read/write software thread ID) register.
-     *
-     * @return the value within the register.
-     */
-    virtual u64 GetTPIDR_EL0() const = 0;
-
-    /**
-     * Sets a new value within the TPIDR_EL0 (read/write software thread ID) register.
-     *
-     * @param value The new value to place in the register.
-     */
-    virtual void SetTPIDR_EL0(u64 value) = 0;
-
+    // Get the current architecture.
+    // This returns AArch64 when PSTATE.nRW == 0 and AArch32 when PSTATE.nRW == 1.
     virtual Architecture GetArchitecture() const = 0;
-    virtual void SaveContext(ThreadContext32& ctx) const = 0;
-    virtual void SaveContext(ThreadContext64& ctx) const = 0;
-    virtual void LoadContext(const ThreadContext32& ctx) = 0;
-    virtual void LoadContext(const ThreadContext64& ctx) = 0;
-    void LoadWatchpointArray(const WatchpointArray* wp);
 
-    /// Clears the exclusive monitor's state.
-    virtual void ClearExclusiveState() = 0;
+    // Context accessors.
+    // These should not be called if the CPU is running.
+    virtual void GetContext(Kernel::Svc::ThreadContext& ctx) const = 0;
+    virtual void SetContext(const Kernel::Svc::ThreadContext& ctx) = 0;
+    virtual void SetTpidrroEl0(u64 value) = 0;
 
-    /// Signal an interrupt and ask the core to halt as soon as possible.
-    virtual void SignalInterrupt() = 0;
+    virtual void GetSvcArguments(std::span<uint64_t, 8> args) const = 0;
+    virtual void SetSvcArguments(std::span<const uint64_t, 8> args) = 0;
+    virtual u32 GetSvcNumber() const = 0;
 
-    /// Clear a previous interrupt.
-    virtual void ClearInterrupt() = 0;
+    void SetWatchpointArray(const WatchpointArray* watchpoints) {
+        m_watchpoints = watchpoints;
+    }
 
-    struct BacktraceEntry {
-        std::string module;
-        u64 address;
-        u64 original_address;
-        u64 offset;
-        std::string name;
-    };
+    // Signal an interrupt for execution to halt as soon as possible.
+    // It is safe to call this if the CPU is not running.
+    virtual void SignalInterrupt(Kernel::KThread* thread) = 0;
 
-    static std::vector<BacktraceEntry> GetBacktraceFromContext(System& system,
-                                                               const ThreadContext32& ctx);
-    static std::vector<BacktraceEntry> GetBacktraceFromContext(System& system,
-                                                               const ThreadContext64& ctx);
+    // Stack trace generation.
+    void LogBacktrace(const Kernel::KProcess* process) const;
 
-    std::vector<BacktraceEntry> GetBacktrace() const;
-    void LogBacktrace() const;
+    // Debug functionality.
+    virtual const Kernel::DebugWatchpoint* HaltedWatchpoint() const = 0;
+    virtual void RewindBreakpointInstruction() = 0;
 
 protected:
-    /// System context that this ARM interface is running under.
-    System& system;
-    const WatchpointArray* watchpoints;
-    bool uses_wall_clock;
-
-    static void SymbolicateBacktrace(Core::System& system, std::vector<BacktraceEntry>& out);
     const Kernel::DebugWatchpoint* MatchingWatchpoint(
         u64 addr, u64 size, Kernel::DebugWatchpointType access_type) const;
 
-    virtual HaltReason RunJit() = 0;
-    virtual HaltReason StepJit() = 0;
-    virtual u32 GetSvcNumber() const = 0;
-    virtual const Kernel::DebugWatchpoint* HaltedWatchpoint() const = 0;
-    virtual void RewindBreakpointInstruction() = 0;
+protected:
+    const WatchpointArray* m_watchpoints{};
+    bool m_uses_wall_clock{};
 };
 
 } // namespace Core

src/core/arm/debug.cpp

@@ -0,0 +1,354 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/demangle.h"
+#include "core/arm/debug.h"
+#include "core/arm/symbols.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/memory.h"
+
+namespace Core {
+
+namespace {
+
+std::optional<std::string> GetNameFromThreadType64(Core::Memory::Memory& memory,
+                                                   const Kernel::KThread& thread) {
+    // Read thread type from TLS
+    const VAddr tls_thread_type{memory.Read64(thread.GetTlsAddress() + 0x1f8)};
+    const VAddr argument_thread_type{thread.GetArgument()};
+
+    if (argument_thread_type && tls_thread_type != argument_thread_type) {
+        // Probably not created by nnsdk, no name available.
+        return std::nullopt;
+    }
+
+    if (!tls_thread_type) {
+        return std::nullopt;
+    }
+
+    const u16 version{memory.Read16(tls_thread_type + 0x46)};
+    VAddr name_pointer{};
+    if (version == 1) {
+        name_pointer = memory.Read64(tls_thread_type + 0x1a0);
+    } else {
+        name_pointer = memory.Read64(tls_thread_type + 0x1a8);
+    }
+
+    if (!name_pointer) {
+        // No name provided.
+        return std::nullopt;
+    }
+
+    return memory.ReadCString(name_pointer, 256);
+}
+
+std::optional<std::string> GetNameFromThreadType32(Core::Memory::Memory& memory,
+                                                   const Kernel::KThread& thread) {
+    // Read thread type from TLS
+    const VAddr tls_thread_type{memory.Read32(thread.GetTlsAddress() + 0x1fc)};
+    const VAddr argument_thread_type{thread.GetArgument()};
+
+    if (argument_thread_type && tls_thread_type != argument_thread_type) {
+        // Probably not created by nnsdk, no name available.
+        return std::nullopt;
+    }
+
+    if (!tls_thread_type) {
+        return std::nullopt;
+    }
+
+    const u16 version{memory.Read16(tls_thread_type + 0x26)};
+    VAddr name_pointer{};
+    if (version == 1) {
+        name_pointer = memory.Read32(tls_thread_type + 0xe4);
+    } else {
+        name_pointer = memory.Read32(tls_thread_type + 0xe8);
+    }
+
+    if (!name_pointer) {
+        // No name provided.
+        return std::nullopt;
+    }
+
+    return memory.ReadCString(name_pointer, 256);
+}
+
+constexpr std::array<u64, 2> SegmentBases{
+    0x60000000ULL,
+    0x7100000000ULL,
+};
+
+void SymbolicateBacktrace(const Kernel::KProcess* process, std::vector<BacktraceEntry>& out) {
+    auto modules = FindModules(process);
+
+    const bool is_64 = process->Is64Bit();
+
+    std::map<std::string, Symbols::Symbols> symbols;
+    for (const auto& module : modules) {
+        symbols.insert_or_assign(module.second,
+                                 Symbols::GetSymbols(module.first, process->GetMemory(), is_64));
+    }
+
+    for (auto& entry : out) {
+        VAddr base = 0;
+        for (auto iter = modules.rbegin(); iter != modules.rend(); ++iter) {
+            const auto& module{*iter};
+            if (entry.original_address >= module.first) {
+                entry.module = module.second;
+                base = module.first;
+                break;
+            }
+        }
+
+        entry.offset = entry.original_address - base;
+        entry.address = SegmentBases[is_64] + entry.offset;
+
+        if (entry.module.empty()) {
+            entry.module = "unknown";
+        }
+
+        const auto symbol_set = symbols.find(entry.module);
+        if (symbol_set != symbols.end()) {
+            const auto symbol = Symbols::GetSymbolName(symbol_set->second, entry.offset);
+            if (symbol) {
+                entry.name = Common::DemangleSymbol(*symbol);
+            }
+        }
+    }
+}
+
+std::vector<BacktraceEntry> GetAArch64Backtrace(const Kernel::KProcess* process,
+                                                const Kernel::Svc::ThreadContext& ctx) {
+    std::vector<BacktraceEntry> out;
+    auto& memory = process->GetMemory();
+    auto pc = ctx.pc, lr = ctx.lr, fp = ctx.fp;
+
+    out.push_back({"", 0, pc, 0, ""});
+
+    // fp (= x29) points to the previous frame record.
+    // Frame records are two words long:
+    // fp+0 : pointer to previous frame record
+    // fp+8 : value of lr for frame
+    for (size_t i = 0; i < 256; i++) {
+        out.push_back({"", 0, lr, 0, ""});
+        if (!fp || (fp % 4 != 0) || !memory.IsValidVirtualAddressRange(fp, 16)) {
+            break;
+        }
+        lr = memory.Read64(fp + 8);
+        fp = memory.Read64(fp);
+    }
+
+    SymbolicateBacktrace(process, out);
+
+    return out;
+}
+
+std::vector<BacktraceEntry> GetAArch32Backtrace(const Kernel::KProcess* process,
+                                                const Kernel::Svc::ThreadContext& ctx) {
+    std::vector<BacktraceEntry> out;
+    auto& memory = process->GetMemory();
+    auto pc = ctx.pc, lr = ctx.lr, fp = ctx.fp;
+
+    out.push_back({"", 0, pc, 0, ""});
+
+    // fp (= r11) points to the last frame record.
+    // Frame records are two words long:
+    // fp+0 : pointer to previous frame record
+    // fp+4 : value of lr for frame
+    for (size_t i = 0; i < 256; i++) {
+        out.push_back({"", 0, lr, 0, ""});
+        if (!fp || (fp % 4 != 0) || !memory.IsValidVirtualAddressRange(fp, 8)) {
+            break;
+        }
+        lr = memory.Read32(fp + 4);
+        fp = memory.Read32(fp);
+    }
+
+    SymbolicateBacktrace(process, out);
+
+    return out;
+}
+
+} // namespace
+
+std::optional<std::string> GetThreadName(const Kernel::KThread* thread) {
+    const auto* process = thread->GetOwnerProcess();
+    if (process->Is64Bit()) {
+        return GetNameFromThreadType64(process->GetMemory(), *thread);
+    } else {
+        return GetNameFromThreadType32(process->GetMemory(), *thread);
+    }
+}
+
+std::string_view GetThreadWaitReason(const Kernel::KThread* thread) {
+    switch (thread->GetWaitReasonForDebugging()) {
+    case Kernel::ThreadWaitReasonForDebugging::Sleep:
+        return "Sleep";
+    case Kernel::ThreadWaitReasonForDebugging::IPC:
+        return "IPC";
+    case Kernel::ThreadWaitReasonForDebugging::Synchronization:
+        return "Synchronization";
+    case Kernel::ThreadWaitReasonForDebugging::ConditionVar:
+        return "ConditionVar";
+    case Kernel::ThreadWaitReasonForDebugging::Arbitration:
+        return "Arbitration";
+    case Kernel::ThreadWaitReasonForDebugging::Suspended:
+        return "Suspended";
+    default:
+        return "Unknown";
+    }
+}
+
+std::string GetThreadState(const Kernel::KThread* thread) {
+    switch (thread->GetState()) {
+    case Kernel::ThreadState::Initialized:
+        return "Initialized";
+    case Kernel::ThreadState::Waiting:
+        return fmt::format("Waiting ({})", GetThreadWaitReason(thread));
+    case Kernel::ThreadState::Runnable:
+        return "Runnable";
+    case Kernel::ThreadState::Terminated:
+        return "Terminated";
+    default:
+        return "Unknown";
+    }
+}
+
+Kernel::KProcessAddress GetModuleEnd(const Kernel::KProcess* process,
+                                     Kernel::KProcessAddress base) {
+    Kernel::KMemoryInfo mem_info;
+    Kernel::Svc::MemoryInfo svc_mem_info;
+    Kernel::Svc::PageInfo page_info;
+    VAddr cur_addr{GetInteger(base)};
+    auto& page_table = process->GetPageTable();
+
+    // Expect: r-x Code (.text)
+    R_ASSERT(page_table.QueryInfo(std::addressof(mem_info), std::addressof(page_info), cur_addr));
+    svc_mem_info = mem_info.GetSvcMemoryInfo();
+    cur_addr = svc_mem_info.base_address + svc_mem_info.size;
+    if (svc_mem_info.state != Kernel::Svc::MemoryState::Code ||
+        svc_mem_info.permission != Kernel::Svc::MemoryPermission::ReadExecute) {
+        return cur_addr - 1;
+    }
+
+    // Expect: r-- Code (.rodata)
+    R_ASSERT(page_table.QueryInfo(std::addressof(mem_info), std::addressof(page_info), cur_addr));
+    svc_mem_info = mem_info.GetSvcMemoryInfo();
+    cur_addr = svc_mem_info.base_address + svc_mem_info.size;
+    if (svc_mem_info.state != Kernel::Svc::MemoryState::Code ||
+        svc_mem_info.permission != Kernel::Svc::MemoryPermission::Read) {
+        return cur_addr - 1;
+    }
+
+    // Expect: rw- CodeData (.data)
+    R_ASSERT(page_table.QueryInfo(std::addressof(mem_info), std::addressof(page_info), cur_addr));
+    svc_mem_info = mem_info.GetSvcMemoryInfo();
+    cur_addr = svc_mem_info.base_address + svc_mem_info.size;
+    return cur_addr - 1;
+}
+
+Loader::AppLoader::Modules FindModules(const Kernel::KProcess* process) {
+    Loader::AppLoader::Modules modules;
+
+    auto& page_table = process->GetPageTable();
+    auto& memory = process->GetMemory();
+    VAddr cur_addr = 0;
+
+    // Look for executable sections in Code or AliasCode regions.
+    while (true) {
+        Kernel::KMemoryInfo mem_info{};
+        Kernel::Svc::PageInfo page_info{};
+        R_ASSERT(
+            page_table.QueryInfo(std::addressof(mem_info), std::addressof(page_info), cur_addr));
+        auto svc_mem_info = mem_info.GetSvcMemoryInfo();
+
+        if (svc_mem_info.permission == Kernel::Svc::MemoryPermission::ReadExecute &&
+            (svc_mem_info.state == Kernel::Svc::MemoryState::Code ||
+             svc_mem_info.state == Kernel::Svc::MemoryState::AliasCode)) {
+            // Try to read the module name from its path.
+            constexpr s32 PathLengthMax = 0x200;
+            struct {
+                u32 zero;
+                s32 path_length;
+                std::array<char, PathLengthMax> path;
+            } module_path;
+
+            if (memory.ReadBlock(svc_mem_info.base_address + svc_mem_info.size, &module_path,
+                                 sizeof(module_path))) {
+                if (module_path.zero == 0 && module_path.path_length > 0) {
+                    // Truncate module name.
+                    module_path.path[PathLengthMax - 1] = '\0';
+
+                    // Ignore leading directories.
+                    char* path_pointer = module_path.path.data();
+                    char* path_end =
+                        path_pointer + std::min(PathLengthMax, module_path.path_length);
+
+                    for (s32 i = 0; i < std::min(PathLengthMax, module_path.path_length) &&
+                                    module_path.path[i] != '\0';
+                         i++) {
+                        if (module_path.path[i] == '/' || module_path.path[i] == '\\') {
+                            path_pointer = module_path.path.data() + i + 1;
+                        }
+                    }
+
+                    // Insert output.
+                    modules.emplace(svc_mem_info.base_address,
+                                    std::string_view(path_pointer, path_end));
+                }
+            }
+        }
+
+        // Check if we're done.
+        const uintptr_t next_address = svc_mem_info.base_address + svc_mem_info.size;
+        if (next_address <= cur_addr) {
+            break;
+        }
+
+        cur_addr = next_address;
+    }
+
+    return modules;
+}
+
+Kernel::KProcessAddress FindMainModuleEntrypoint(const Kernel::KProcess* process) {
+    // Do we have any loaded executable sections?
+    auto modules = FindModules(process);
+
+    if (modules.size() >= 2) {
+        // If we have two or more, the first one is rtld and the second is main.
+        return std::next(modules.begin())->first;
+    } else if (!modules.empty()) {
+        // If we only have one, this is the main module.
+        return modules.begin()->first;
+    }
+
+    // As a last resort, use the start of the code region.
+    return GetInteger(process->GetPageTable().GetCodeRegionStart());
+}
+
+void InvalidateInstructionCacheRange(const Kernel::KProcess* process, u64 address, u64 size) {
+    for (size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
+        auto* interface = process->GetArmInterface(i);
+        if (interface) {
+            interface->InvalidateCacheRange(address, size);
+        }
+    }
+}
+
+std::vector<BacktraceEntry> GetBacktraceFromContext(const Kernel::KProcess* process,
+                                                    const Kernel::Svc::ThreadContext& ctx) {
+    if (process->Is64Bit()) {
+        return GetAArch64Backtrace(process, ctx);
+    } else {
+        return GetAArch32Backtrace(process, ctx);
+    }
+}
+
+std::vector<BacktraceEntry> GetBacktrace(const Kernel::KThread* thread) {
+    Kernel::Svc::ThreadContext ctx = thread->GetContext();
+    return GetBacktraceFromContext(thread->GetOwnerProcess(), ctx);
+}
+
+} // namespace Core

src/core/arm/debug.h

@@ -0,0 +1,35 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <optional>
+
+#include "core/hle/kernel/k_thread.h"
+#include "core/loader/loader.h"
+
+namespace Core {
+
+std::optional<std::string> GetThreadName(const Kernel::KThread* thread);
+std::string_view GetThreadWaitReason(const Kernel::KThread* thread);
+std::string GetThreadState(const Kernel::KThread* thread);
+
+Loader::AppLoader::Modules FindModules(const Kernel::KProcess* process);
+Kernel::KProcessAddress GetModuleEnd(const Kernel::KProcess* process, Kernel::KProcessAddress base);
+Kernel::KProcessAddress FindMainModuleEntrypoint(const Kernel::KProcess* process);
+
+void InvalidateInstructionCacheRange(const Kernel::KProcess* process, u64 address, u64 size);
+
+struct BacktraceEntry {
+    std::string module;
+    u64 address;
+    u64 original_address;
+    u64 offset;
+    std::string name;
+};
+
+std::vector<BacktraceEntry> GetBacktraceFromContext(const Kernel::KProcess* process,
+                                                    const Kernel::Svc::ThreadContext& ctx);
+std::vector<BacktraceEntry> GetBacktrace(const Kernel::KThread* thread);
+
+} // namespace Core

src/core/arm/dynarmic/arm_dynarmic_32.cpp

@@ -1,25 +1,13 @@
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include <cinttypes>
-#include <memory>
-#include <dynarmic/interface/A32/a32.h>
-#include <dynarmic/interface/A32/config.h>
-#include "common/assert.h"
-#include "common/literals.h"
-#include "common/logging/log.h"
-#include "common/page_table.h"
 #include "common/settings.h"
 #include "core/arm/dynarmic/arm_dynarmic.h"
 #include "core/arm/dynarmic/arm_dynarmic_32.h"
 #include "core/arm/dynarmic/dynarmic_cp15.h"
 #include "core/arm/dynarmic/dynarmic_exclusive_monitor.h"
-#include "core/core.h"
 #include "core/core_timing.h"
-#include "core/debugger/debugger.h"
 #include "core/hle/kernel/k_process.h"
-#include "core/hle/kernel/svc.h"
-#include "core/memory.h"
 
 namespace Core {
 
@@ -27,78 +15,78 @@ using namespace Common::Literals;
 
 class DynarmicCallbacks32 : public Dynarmic::A32::UserCallbacks {
 public:
-    explicit DynarmicCallbacks32(ARM_Dynarmic_32& parent_)
-        : parent{parent_}, memory(parent.system.ApplicationMemory()),
-          debugger_enabled{parent.system.DebuggerEnabled()},
-          check_memory_access{debugger_enabled ||
-                              !Settings::values.cpuopt_ignore_memory_aborts.GetValue()} {}
+    explicit DynarmicCallbacks32(ArmDynarmic32& parent, const Kernel::KProcess* process)
+        : m_parent{parent}, m_memory(process->GetMemory()),
+          m_process(process), m_debugger_enabled{parent.m_system.DebuggerEnabled()},
+          m_check_memory_access{m_debugger_enabled ||
+                                !Settings::values.cpuopt_ignore_memory_aborts.GetValue()} {}
 
     u8 MemoryRead8(u32 vaddr) override {
         CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Read);
-        return memory.Read8(vaddr);
+        return m_memory.Read8(vaddr);
     }
     u16 MemoryRead16(u32 vaddr) override {
         CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Read);
-        return memory.Read16(vaddr);
+        return m_memory.Read16(vaddr);
     }
     u32 MemoryRead32(u32 vaddr) override {
         CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Read);
-        return memory.Read32(vaddr);
+        return m_memory.Read32(vaddr);
     }
     u64 MemoryRead64(u32 vaddr) override {
         CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Read);
-        return memory.Read64(vaddr);
+        return m_memory.Read64(vaddr);
     }
     std::optional<u32> MemoryReadCode(u32 vaddr) override {
-        if (!memory.IsValidVirtualAddressRange(vaddr, sizeof(u32))) {
+        if (!m_memory.IsValidVirtualAddressRange(vaddr, sizeof(u32))) {
             return std::nullopt;
         }
-        return memory.Read32(vaddr);
+        return m_memory.Read32(vaddr);
     }
 
     void MemoryWrite8(u32 vaddr, u8 value) override {
         if (CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write)) {
-            memory.Write8(vaddr, value);
+            m_memory.Write8(vaddr, value);
         }
     }
     void MemoryWrite16(u32 vaddr, u16 value) override {
         if (CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write)) {
-            memory.Write16(vaddr, value);
+            m_memory.Write16(vaddr, value);
         }
     }
     void MemoryWrite32(u32 vaddr, u32 value) override {
         if (CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write)) {
-            memory.Write32(vaddr, value);
+            m_memory.Write32(vaddr, value);
         }
     }
     void MemoryWrite64(u32 vaddr, u64 value) override {
         if (CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write)) {
-            memory.Write64(vaddr, value);
+            m_memory.Write64(vaddr, value);
         }
     }
 
     bool MemoryWriteExclusive8(u32 vaddr, u8 value, u8 expected) override {
         return CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive8(vaddr, value, expected);
+               m_memory.WriteExclusive8(vaddr, value, expected);
     }
     bool MemoryWriteExclusive16(u32 vaddr, u16 value, u16 expected) override {
         return CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive16(vaddr, value, expected);
+               m_memory.WriteExclusive16(vaddr, value, expected);
     }
     bool MemoryWriteExclusive32(u32 vaddr, u32 value, u32 expected) override {
         return CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive32(vaddr, value, expected);
+               m_memory.WriteExclusive32(vaddr, value, expected);
     }
     bool MemoryWriteExclusive64(u32 vaddr, u64 value, u64 expected) override {
         return CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive64(vaddr, value, expected);
+               m_memory.WriteExclusive64(vaddr, value, expected);
     }
 
     void InterpreterFallback(u32 pc, std::size_t num_instructions) override {
-        parent.LogBacktrace();
+        m_parent.LogBacktrace(m_process);
         LOG_ERROR(Core_ARM,
                   "Unimplemented instruction @ 0x{:X} for {} instructions (instr = {:08X})", pc,
-                  num_instructions, memory.Read32(pc));
+                  num_instructions, m_memory.Read32(pc));
     }
 
     void ExceptionRaised(u32 pc, Dynarmic::A32::Exception exception) override {
@@ -108,73 +96,64 @@ public:
             ReturnException(pc, PrefetchAbort);
             return;
         default:
-            if (debugger_enabled) {
+            if (m_debugger_enabled) {
                 ReturnException(pc, InstructionBreakpoint);
                 return;
             }
 
-            parent.LogBacktrace();
+            m_parent.LogBacktrace(m_process);
             LOG_CRITICAL(Core_ARM,
                          "ExceptionRaised(exception = {}, pc = {:08X}, code = {:08X}, thumb = {})",
-                         exception, pc, memory.Read32(pc), parent.IsInThumbMode());
+                         exception, pc, m_memory.Read32(pc), m_parent.IsInThumbMode());
         }
     }
 
     void CallSVC(u32 swi) override {
-        parent.svc_swi = swi;
-        parent.jit.load()->HaltExecution(SupervisorCall);
+        m_parent.m_svc_swi = swi;
+        m_parent.m_jit->HaltExecution(SupervisorCall);
     }
 
     void AddTicks(u64 ticks) override {
-        if (parent.uses_wall_clock) {
-            return;
-        }
+        ASSERT_MSG(!m_parent.m_uses_wall_clock, "Dynarmic ticking disabled");
 
         // Divide the number of ticks by the amount of CPU cores. TODO(Subv): This yields only a
         // rough approximation of the amount of executed ticks in the system, it may be thrown off
         // if not all cores are doing a similar amount of work. Instead of doing this, we should
         // device a way so that timing is consistent across all cores without increasing the ticks 4
         // times.
-        u64 amortized_ticks =
-            (ticks - num_interpreted_instructions) / Core::Hardware::NUM_CPU_CORES;
+        u64 amortized_ticks = ticks / Core::Hardware::NUM_CPU_CORES;
         // Always execute at least one tick.
         amortized_ticks = std::max<u64>(amortized_ticks, 1);
 
-        parent.system.CoreTiming().AddTicks(amortized_ticks);
-        num_interpreted_instructions = 0;
+        m_parent.m_system.CoreTiming().AddTicks(amortized_ticks);
     }
 
     u64 GetTicksRemaining() override {
-        if (parent.uses_wall_clock) {
-            if (!IsInterrupted()) {
-                return minimum_run_cycles;
-            }
-            return 0U;
-        }
+        ASSERT_MSG(!m_parent.m_uses_wall_clock, "Dynarmic ticking disabled");
 
-        return std::max<s64>(parent.system.CoreTiming().GetDowncount(), 0);
+        return std::max<s64>(m_parent.m_system.CoreTiming().GetDowncount(), 0);
     }
 
     bool CheckMemoryAccess(u64 addr, u64 size, Kernel::DebugWatchpointType type) {
-        if (!check_memory_access) {
+        if (!m_check_memory_access) {
             return true;
         }
 
-        if (!memory.IsValidVirtualAddressRange(addr, size)) {
+        if (!m_memory.IsValidVirtualAddressRange(addr, size)) {
             LOG_CRITICAL(Core_ARM, "Stopping execution due to unmapped memory access at {:#x}",
                          addr);
-            parent.jit.load()->HaltExecution(PrefetchAbort);
+            m_parent.m_jit->HaltExecution(PrefetchAbort);
             return false;
         }
 
-        if (!debugger_enabled) {
+        if (!m_debugger_enabled) {
             return true;
         }
 
-        const auto match{parent.MatchingWatchpoint(addr, size, type)};
+        const auto match{m_parent.MatchingWatchpoint(addr, size, type)};
         if (match) {
-            parent.halted_watchpoint = match;
-            parent.jit.load()->HaltExecution(DataAbort);
+            m_parent.m_halted_watchpoint = match;
+            m_parent.m_jit->HaltExecution(DataAbort);
             return false;
         }
 
@@ -182,32 +161,31 @@ public:
     }
 
     void ReturnException(u32 pc, Dynarmic::HaltReason hr) {
-        parent.SaveContext(parent.breakpoint_context);
-        parent.breakpoint_context.cpu_registers[15] = pc;
-        parent.jit.load()->HaltExecution(hr);
+        m_parent.GetContext(m_parent.m_breakpoint_context);
+        m_parent.m_breakpoint_context.pc = pc;
+        m_parent.m_breakpoint_context.r[15] = pc;
+        m_parent.m_jit->HaltExecution(hr);
     }
 
-    bool IsInterrupted() {
-        return parent.system.Kernel().PhysicalCore(parent.core_index).IsInterrupted();
-    }
-
-    ARM_Dynarmic_32& parent;
-    Core::Memory::Memory& memory;
-    std::size_t num_interpreted_instructions{};
-    const bool debugger_enabled{};
-    const bool check_memory_access{};
-    static constexpr u64 minimum_run_cycles = 10000U;
+    ArmDynarmic32& m_parent;
+    Core::Memory::Memory& m_memory;
+    const Kernel::KProcess* m_process{};
+    const bool m_debugger_enabled{};
+    const bool m_check_memory_access{};
+    static constexpr u64 MinimumRunCycles = 10000U;
 };
 
-std::shared_ptr<Dynarmic::A32::Jit> ARM_Dynarmic_32::MakeJit(Common::PageTable* page_table) const {
+std::shared_ptr<Dynarmic::A32::Jit> ArmDynarmic32::MakeJit(Common::PageTable* page_table) const {
     Dynarmic::A32::UserConfig config;
-    config.callbacks = cb.get();
-    config.coprocessors[15] = cp15;
+    config.callbacks = m_cb.get();
+    config.coprocessors[15] = m_cp15;
     config.define_unpredictable_behaviour = true;
-    static constexpr std::size_t YUZU_PAGEBITS = 12;
-    static constexpr std::size_t NUM_PAGE_TABLE_ENTRIES = 1 << (32 - YUZU_PAGEBITS);
+
     if (page_table) {
-        config.page_table = reinterpret_cast<std::array<std::uint8_t*, NUM_PAGE_TABLE_ENTRIES>*>(
+        constexpr size_t PageBits = 12;
+        constexpr size_t NumPageTableEntries = 1 << (32 - PageBits);
+
+        config.page_table = reinterpret_cast<std::array<std::uint8_t*, NumPageTableEntries>*>(
             page_table->pointers.data());
         config.absolute_offset_page_table = true;
         config.page_table_pointer_mask_bits = Common::PageTable::ATTRIBUTE_BITS;
@@ -221,12 +199,12 @@ std::shared_ptr<Dynarmic::A32::Jit> ARM_Dynarmic_32::MakeJit(Common::PageTable*
     }
 
     // Multi-process state
-    config.processor_id = core_index;
-    config.global_monitor = &exclusive_monitor.monitor;
+    config.processor_id = m_core_index;
+    config.global_monitor = &m_exclusive_monitor.monitor;
 
     // Timing
-    config.wall_clock_cntpct = uses_wall_clock;
-    config.enable_cycle_counting = true;
+    config.wall_clock_cntpct = m_uses_wall_clock;
+    config.enable_cycle_counting = !m_uses_wall_clock;
 
     // Code cache size
 #ifdef ARCHITECTURE_arm64
@@ -236,7 +214,7 @@ std::shared_ptr<Dynarmic::A32::Jit> ARM_Dynarmic_32::MakeJit(Common::PageTable*
 #endif
 
     // Allow memory fault handling to work
-    if (system.DebuggerEnabled()) {
+    if (m_system.DebuggerEnabled()) {
         config.check_halt_on_memory_access = true;
     }
 
@@ -325,137 +303,140 @@ std::shared_ptr<Dynarmic::A32::Jit> ARM_Dynarmic_32::MakeJit(Common::PageTable*
     return std::make_unique<Dynarmic::A32::Jit>(config);
 }
 
-HaltReason ARM_Dynarmic_32::RunJit() {
-    return TranslateHaltReason(jit.load()->Run());
+static std::pair<u32, u32> FpscrToFpsrFpcr(u32 fpscr) {
+    // FPSCR bits [31:27] are mapped to FPSR[31:27].
+    // FPSCR bit [7] is mapped to FPSR[7].
+    // FPSCR bits [4:0] are mapped to FPSR[4:0].
+    const u32 nzcv = fpscr & 0xf8000000;
+    const u32 idc = fpscr & 0x80;
+    const u32 fiq = fpscr & 0x1f;
+    const u32 fpsr = nzcv | idc | fiq;
+
+    // FPSCR bits [26:15] are mapped to FPCR[26:15].
+    // FPSCR bits [12:8] are mapped to FPCR[12:8].
+    const u32 round = fpscr & 0x7ff8000;
+    const u32 trap = fpscr & 0x1f00;
+    const u32 fpcr = round | trap;
+
+    return {fpsr, fpcr};
 }
 
-HaltReason ARM_Dynarmic_32::StepJit() {
-    return TranslateHaltReason(jit.load()->Step());
+static u32 FpsrFpcrToFpscr(u64 fpsr, u64 fpcr) {
+    auto [s, c] = FpscrToFpsrFpcr(static_cast<u32>(fpsr | fpcr));
+    return s | c;
 }
 
-u32 ARM_Dynarmic_32::GetSvcNumber() const {
-    return svc_swi;
+bool ArmDynarmic32::IsInThumbMode() const {
+    return (m_jit->Cpsr() & 0x20) != 0;
 }
 
-const Kernel::DebugWatchpoint* ARM_Dynarmic_32::HaltedWatchpoint() const {
-    return halted_watchpoint;
+HaltReason ArmDynarmic32::RunThread(Kernel::KThread* thread) {
+    m_jit->ClearExclusiveState();
+    return TranslateHaltReason(m_jit->Run());
 }
 
-void ARM_Dynarmic_32::RewindBreakpointInstruction() {
-    LoadContext(breakpoint_context);
+HaltReason ArmDynarmic32::StepThread(Kernel::KThread* thread) {
+    m_jit->ClearExclusiveState();
+    return TranslateHaltReason(m_jit->Step());
 }
 
-ARM_Dynarmic_32::ARM_Dynarmic_32(System& system_, bool uses_wall_clock_,
-                                 DynarmicExclusiveMonitor& exclusive_monitor_,
-                                 std::size_t core_index_)
-    : ARM_Interface{system_, uses_wall_clock_}, cb(std::make_unique<DynarmicCallbacks32>(*this)),
-      cp15(std::make_shared<DynarmicCP15>(*this)), core_index{core_index_},
-      exclusive_monitor{exclusive_monitor_}, null_jit{MakeJit(nullptr)}, jit{null_jit.get()} {}
-
-ARM_Dynarmic_32::~ARM_Dynarmic_32() = default;
-
-void ARM_Dynarmic_32::SetPC(u64 pc) {
-    jit.load()->Regs()[15] = static_cast<u32>(pc);
+u32 ArmDynarmic32::GetSvcNumber() const {
+    return m_svc_swi;
 }
 
-u64 ARM_Dynarmic_32::GetPC() const {
-    return jit.load()->Regs()[15];
-}
+void ArmDynarmic32::GetSvcArguments(std::span<uint64_t, 8> args) const {
+    Dynarmic::A32::Jit& j = *m_jit;
+    auto& gpr = j.Regs();
 
-u64 ARM_Dynarmic_32::GetSP() const {
-    return jit.load()->Regs()[13];
-}
-
-u64 ARM_Dynarmic_32::GetReg(int index) const {
-    return jit.load()->Regs()[index];
-}
-
-void ARM_Dynarmic_32::SetReg(int index, u64 value) {
-    jit.load()->Regs()[index] = static_cast<u32>(value);
-}
-
-u128 ARM_Dynarmic_32::GetVectorReg(int index) const {
-    return {};
-}
-
-void ARM_Dynarmic_32::SetVectorReg(int index, u128 value) {}
-
-u32 ARM_Dynarmic_32::GetPSTATE() const {
-    return jit.load()->Cpsr();
-}
-
-void ARM_Dynarmic_32::SetPSTATE(u32 cpsr) {
-    jit.load()->SetCpsr(cpsr);
-}
-
-u64 ARM_Dynarmic_32::GetTlsAddress() const {
-    return cp15->uro;
-}
-
-void ARM_Dynarmic_32::SetTlsAddress(u64 address) {
-    cp15->uro = static_cast<u32>(address);
-}
-
-u64 ARM_Dynarmic_32::GetTPIDR_EL0() const {
-    return cp15->uprw;
-}
-
-void ARM_Dynarmic_32::SetTPIDR_EL0(u64 value) {
-    cp15->uprw = static_cast<u32>(value);
-}
-
-void ARM_Dynarmic_32::SaveContext(ThreadContext32& ctx) const {
-    Dynarmic::A32::Jit* j = jit.load();
-    ctx.cpu_registers = j->Regs();
-    ctx.extension_registers = j->ExtRegs();
-    ctx.cpsr = j->Cpsr();
-    ctx.fpscr = j->Fpscr();
-}
-
-void ARM_Dynarmic_32::LoadContext(const ThreadContext32& ctx) {
-    Dynarmic::A32::Jit* j = jit.load();
-    j->Regs() = ctx.cpu_registers;
-    j->ExtRegs() = ctx.extension_registers;
-    j->SetCpsr(ctx.cpsr);
-    j->SetFpscr(ctx.fpscr);
-}
-
-void ARM_Dynarmic_32::SignalInterrupt() {
-    jit.load()->HaltExecution(BreakLoop);
-}
-
-void ARM_Dynarmic_32::ClearInterrupt() {
-    jit.load()->ClearHalt(BreakLoop);
-}
-
-void ARM_Dynarmic_32::ClearInstructionCache() {
-    jit.load()->ClearCache();
-}
-
-void ARM_Dynarmic_32::InvalidateCacheRange(u64 addr, std::size_t size) {
-    jit.load()->InvalidateCacheRange(static_cast<u32>(addr), size);
-}
-
-void ARM_Dynarmic_32::ClearExclusiveState() {
-    jit.load()->ClearExclusiveState();
-}
-
-void ARM_Dynarmic_32::PageTableChanged(Common::PageTable& page_table,
-                                       std::size_t new_address_space_size_in_bits) {
-    ThreadContext32 ctx{};
-    SaveContext(ctx);
-
-    auto key = std::make_pair(&page_table, new_address_space_size_in_bits);
-    auto iter = jit_cache.find(key);
-    if (iter != jit_cache.end()) {
-        jit.store(iter->second.get());
-        LoadContext(ctx);
-        return;
+    for (size_t i = 0; i < 8; i++) {
+        args[i] = gpr[i];
     }
-    std::shared_ptr new_jit = MakeJit(&page_table);
-    jit.store(new_jit.get());
-    LoadContext(ctx);
-    jit_cache.emplace(key, std::move(new_jit));
+}
+
+void ArmDynarmic32::SetSvcArguments(std::span<const uint64_t, 8> args) {
+    Dynarmic::A32::Jit& j = *m_jit;
+    auto& gpr = j.Regs();
+
+    for (size_t i = 0; i < 8; i++) {
+        gpr[i] = static_cast<u32>(args[i]);
+    }
+}
+
+const Kernel::DebugWatchpoint* ArmDynarmic32::HaltedWatchpoint() const {
+    return m_halted_watchpoint;
+}
+
+void ArmDynarmic32::RewindBreakpointInstruction() {
+    this->SetContext(m_breakpoint_context);
+}
+
+ArmDynarmic32::ArmDynarmic32(System& system, bool uses_wall_clock, const Kernel::KProcess* process,
+                             DynarmicExclusiveMonitor& exclusive_monitor, std::size_t core_index)
+    : ArmInterface{uses_wall_clock}, m_system{system}, m_exclusive_monitor{exclusive_monitor},
+      m_cb(std::make_unique<DynarmicCallbacks32>(*this, process)),
+      m_cp15(std::make_shared<DynarmicCP15>(*this)), m_core_index{core_index} {
+    auto& page_table_impl = process->GetPageTable().GetBasePageTable().GetImpl();
+    m_jit = MakeJit(&page_table_impl);
+}
+
+ArmDynarmic32::~ArmDynarmic32() = default;
+
+void ArmDynarmic32::SetTpidrroEl0(u64 value) {
+    m_cp15->uro = static_cast<u32>(value);
+}
+
+void ArmDynarmic32::GetContext(Kernel::Svc::ThreadContext& ctx) const {
+    Dynarmic::A32::Jit& j = *m_jit;
+    auto& gpr = j.Regs();
+    auto& fpr = j.ExtRegs();
+
+    for (size_t i = 0; i < 16; i++) {
+        ctx.r[i] = gpr[i];
+    }
+
+    ctx.fp = gpr[11];
+    ctx.sp = gpr[13];
+    ctx.lr = gpr[14];
+    ctx.pc = gpr[15];
+    ctx.pstate = j.Cpsr();
+
+    static_assert(sizeof(fpr) <= sizeof(ctx.v));
+    std::memcpy(ctx.v.data(), &fpr, sizeof(fpr));
+
+    auto [fpsr, fpcr] = FpscrToFpsrFpcr(j.Fpscr());
+    ctx.fpcr = fpcr;
+    ctx.fpsr = fpsr;
+    ctx.tpidr = m_cp15->uprw;
+}
+
+void ArmDynarmic32::SetContext(const Kernel::Svc::ThreadContext& ctx) {
+    Dynarmic::A32::Jit& j = *m_jit;
+    auto& gpr = j.Regs();
+    auto& fpr = j.ExtRegs();
+
+    for (size_t i = 0; i < 16; i++) {
+        gpr[i] = static_cast<u32>(ctx.r[i]);
+    }
+
+    j.SetCpsr(ctx.pstate);
+
+    static_assert(sizeof(fpr) <= sizeof(ctx.v));
+    std::memcpy(&fpr, ctx.v.data(), sizeof(fpr));
+
+    j.SetFpscr(FpsrFpcrToFpscr(ctx.fpsr, ctx.fpcr));
+    m_cp15->uprw = static_cast<u32>(ctx.tpidr);
+}
+
+void ArmDynarmic32::SignalInterrupt(Kernel::KThread* thread) {
+    m_jit->HaltExecution(BreakLoop);
+}
+
+void ArmDynarmic32::ClearInstructionCache() {
+    m_jit->ClearCache();
+}
+
+void ArmDynarmic32::InvalidateCacheRange(u64 addr, std::size_t size) {
+    m_jit->InvalidateCacheRange(static_cast<u32>(addr), size);
 }
 
 } // namespace Core

src/core/arm/dynarmic/arm_dynarmic_32.h

@@ -3,14 +3,8 @@
 
 #pragma once
 
-#include <atomic>
-#include <memory>
-#include <unordered_map>
-
 #include <dynarmic/interface/A32/a32.h>
-#include <dynarmic/interface/A64/a64.h>
-#include "common/common_types.h"
-#include "common/hash.h"
+
 #include "core/arm/arm_interface.h"
 #include "core/arm/dynarmic/dynarmic_exclusive_monitor.h"
 
@@ -20,89 +14,63 @@ class Memory;
 
 namespace Core {
 
-class CPUInterruptHandler;
 class DynarmicCallbacks32;
 class DynarmicCP15;
-class DynarmicExclusiveMonitor;
 class System;
 
-class ARM_Dynarmic_32 final : public ARM_Interface {
+class ArmDynarmic32 final : public ArmInterface {
 public:
-    ARM_Dynarmic_32(System& system_, bool uses_wall_clock_,
-                    DynarmicExclusiveMonitor& exclusive_monitor_, std::size_t core_index_);
-    ~ARM_Dynarmic_32() 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;
-
-    bool IsInThumbMode() const {
-        return (GetPSTATE() & 0x20) != 0;
-    }
+    ArmDynarmic32(System& system, bool uses_wall_clock, const Kernel::KProcess* process,
+                  DynarmicExclusiveMonitor& exclusive_monitor, std::size_t core_index);
+    ~ArmDynarmic32() override;
 
     Architecture GetArchitecture() const override {
-        return Architecture::Aarch32;
+        return Architecture::AArch32;
     }
-    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;
+    bool IsInThumbMode() const;
 
+    HaltReason RunThread(Kernel::KThread* thread) override;
+    HaltReason StepThread(Kernel::KThread* thread) override;
+
+    void GetContext(Kernel::Svc::ThreadContext& ctx) const override;
+    void SetContext(const Kernel::Svc::ThreadContext& ctx) override;
+    void SetTpidrroEl0(u64 value) override;
+
+    void GetSvcArguments(std::span<uint64_t, 8> args) const override;
+    void SetSvcArguments(std::span<const uint64_t, 8> args) override;
+    u32 GetSvcNumber() const override;
+
+    void SignalInterrupt(Kernel::KThread* thread) 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;
     void RewindBreakpointInstruction() override;
 
 private:
-    std::shared_ptr<Dynarmic::A32::Jit> MakeJit(Common::PageTable* page_table) const;
-
-    static std::vector<BacktraceEntry> GetBacktrace(Core::System& system, u64 fp, u64 lr, u64 pc);
-
-    using JitCacheKey = std::pair<Common::PageTable*, std::size_t>;
-    using JitCacheType =
-        std::unordered_map<JitCacheKey, std::shared_ptr<Dynarmic::A32::Jit>, Common::PairHash>;
+    System& m_system;
+    DynarmicExclusiveMonitor& m_exclusive_monitor;
 
+private:
     friend class DynarmicCallbacks32;
     friend class DynarmicCP15;
 
-    std::unique_ptr<DynarmicCallbacks32> cb;
-    JitCacheType jit_cache;
-    std::shared_ptr<DynarmicCP15> cp15;
-    std::size_t core_index;
-    DynarmicExclusiveMonitor& exclusive_monitor;
+    std::shared_ptr<Dynarmic::A32::Jit> MakeJit(Common::PageTable* page_table) const;
 
-    std::shared_ptr<Dynarmic::A32::Jit> null_jit;
+    std::unique_ptr<DynarmicCallbacks32> m_cb{};
+    std::shared_ptr<DynarmicCP15> m_cp15{};
+    std::size_t m_core_index{};
 
-    // A raw pointer here is fine; we never delete Jit instances.
-    std::atomic<Dynarmic::A32::Jit*> jit;
+    std::shared_ptr<Dynarmic::A32::Jit> m_jit{};
 
     // SVC callback
-    u32 svc_swi{};
+    u32 m_svc_swi{};
 
     // Watchpoint info
-    const Kernel::DebugWatchpoint* halted_watchpoint;
-    ThreadContext32 breakpoint_context;
+    const Kernel::DebugWatchpoint* m_halted_watchpoint{};
+    Kernel::Svc::ThreadContext m_breakpoint_context{};
 };
 
 } // namespace Core

src/core/arm/dynarmic/arm_dynarmic_64.cpp

@@ -1,25 +1,12 @@
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
-#include <cinttypes>
-#include <memory>
-#include <dynarmic/interface/A64/a64.h>
-#include <dynarmic/interface/A64/config.h>
-#include "common/assert.h"
-#include "common/literals.h"
-#include "common/logging/log.h"
-#include "common/page_table.h"
 #include "common/settings.h"
 #include "core/arm/dynarmic/arm_dynarmic.h"
 #include "core/arm/dynarmic/arm_dynarmic_64.h"
 #include "core/arm/dynarmic/dynarmic_exclusive_monitor.h"
-#include "core/core.h"
 #include "core/core_timing.h"
-#include "core/debugger/debugger.h"
-#include "core/hardware_properties.h"
 #include "core/hle/kernel/k_process.h"
-#include "core/hle/kernel/svc.h"
-#include "core/memory.h"
 
 namespace Core {
 
@@ -28,92 +15,92 @@ using namespace Common::Literals;
 
 class DynarmicCallbacks64 : public Dynarmic::A64::UserCallbacks {
 public:
-    explicit DynarmicCallbacks64(ARM_Dynarmic_64& parent_)
-        : parent{parent_}, memory(parent.system.ApplicationMemory()),
-          debugger_enabled{parent.system.DebuggerEnabled()},
-          check_memory_access{debugger_enabled ||
-                              !Settings::values.cpuopt_ignore_memory_aborts.GetValue()} {}
+    explicit DynarmicCallbacks64(ArmDynarmic64& parent, const Kernel::KProcess* process)
+        : m_parent{parent}, m_memory(process->GetMemory()),
+          m_process(process), m_debugger_enabled{parent.m_system.DebuggerEnabled()},
+          m_check_memory_access{m_debugger_enabled ||
+                                !Settings::values.cpuopt_ignore_memory_aborts.GetValue()} {}
 
     u8 MemoryRead8(u64 vaddr) override {
         CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Read);
-        return memory.Read8(vaddr);
+        return m_memory.Read8(vaddr);
     }
     u16 MemoryRead16(u64 vaddr) override {
         CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Read);
-        return memory.Read16(vaddr);
+        return m_memory.Read16(vaddr);
     }
     u32 MemoryRead32(u64 vaddr) override {
         CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Read);
-        return memory.Read32(vaddr);
+        return m_memory.Read32(vaddr);
     }
     u64 MemoryRead64(u64 vaddr) override {
         CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Read);
-        return memory.Read64(vaddr);
+        return m_memory.Read64(vaddr);
     }
     Vector MemoryRead128(u64 vaddr) override {
         CheckMemoryAccess(vaddr, 16, Kernel::DebugWatchpointType::Read);
-        return {memory.Read64(vaddr), memory.Read64(vaddr + 8)};
+        return {m_memory.Read64(vaddr), m_memory.Read64(vaddr + 8)};
     }
     std::optional<u32> MemoryReadCode(u64 vaddr) override {
-        if (!memory.IsValidVirtualAddressRange(vaddr, sizeof(u32))) {
+        if (!m_memory.IsValidVirtualAddressRange(vaddr, sizeof(u32))) {
             return std::nullopt;
         }
-        return memory.Read32(vaddr);
+        return m_memory.Read32(vaddr);
     }
 
     void MemoryWrite8(u64 vaddr, u8 value) override {
         if (CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write)) {
-            memory.Write8(vaddr, value);
+            m_memory.Write8(vaddr, value);
         }
     }
     void MemoryWrite16(u64 vaddr, u16 value) override {
         if (CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write)) {
-            memory.Write16(vaddr, value);
+            m_memory.Write16(vaddr, value);
         }
     }
     void MemoryWrite32(u64 vaddr, u32 value) override {
         if (CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write)) {
-            memory.Write32(vaddr, value);
+            m_memory.Write32(vaddr, value);
         }
     }
     void MemoryWrite64(u64 vaddr, u64 value) override {
         if (CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write)) {
-            memory.Write64(vaddr, value);
+            m_memory.Write64(vaddr, value);
         }
     }
     void MemoryWrite128(u64 vaddr, Vector value) override {
         if (CheckMemoryAccess(vaddr, 16, Kernel::DebugWatchpointType::Write)) {
-            memory.Write64(vaddr, value[0]);
-            memory.Write64(vaddr + 8, value[1]);
+            m_memory.Write64(vaddr, value[0]);
+            m_memory.Write64(vaddr + 8, value[1]);
         }
     }
 
     bool MemoryWriteExclusive8(u64 vaddr, std::uint8_t value, std::uint8_t expected) override {
         return CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive8(vaddr, value, expected);
+               m_memory.WriteExclusive8(vaddr, value, expected);
     }
     bool MemoryWriteExclusive16(u64 vaddr, std::uint16_t value, std::uint16_t expected) override {
         return CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive16(vaddr, value, expected);
+               m_memory.WriteExclusive16(vaddr, value, expected);
     }
     bool MemoryWriteExclusive32(u64 vaddr, std::uint32_t value, std::uint32_t expected) override {
         return CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive32(vaddr, value, expected);
+               m_memory.WriteExclusive32(vaddr, value, expected);
     }
     bool MemoryWriteExclusive64(u64 vaddr, std::uint64_t value, std::uint64_t expected) override {
         return CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive64(vaddr, value, expected);
+               m_memory.WriteExclusive64(vaddr, value, expected);
     }
     bool MemoryWriteExclusive128(u64 vaddr, Vector value, Vector expected) override {
         return CheckMemoryAccess(vaddr, 16, Kernel::DebugWatchpointType::Write) &&
-               memory.WriteExclusive128(vaddr, value, expected);
+               m_memory.WriteExclusive128(vaddr, value, expected);
     }
 
     void InterpreterFallback(u64 pc, std::size_t num_instructions) override {
-        parent.LogBacktrace();
+        m_parent.LogBacktrace(m_process);
         LOG_ERROR(Core_ARM,
                   "Unimplemented instruction @ 0x{:X} for {} instructions (instr = {:08X})", pc,
-                  num_instructions, memory.Read32(pc));
+                  num_instructions, m_memory.Read32(pc));
         ReturnException(pc, PrefetchAbort);
     }
 
@@ -124,11 +111,11 @@ public:
             static constexpr u64 ICACHE_LINE_SIZE = 64;
 
             const u64 cache_line_start = value & ~(ICACHE_LINE_SIZE - 1);
-            parent.system.InvalidateCpuInstructionCacheRange(cache_line_start, ICACHE_LINE_SIZE);
+            m_parent.InvalidateCacheRange(cache_line_start, ICACHE_LINE_SIZE);
             break;
         }
         case Dynarmic::A64::InstructionCacheOperation::InvalidateAllToPoU:
-            parent.system.InvalidateCpuInstructionCaches();
+            m_parent.ClearInstructionCache();
             break;
         case Dynarmic::A64::InstructionCacheOperation::InvalidateAllToPoUInnerSharable:
         default:
@@ -136,7 +123,7 @@ public:
             break;
         }
 
-        parent.jit.load()->HaltExecution(Dynarmic::HaltReason::CacheInvalidation);
+        m_parent.m_jit->HaltExecution(Dynarmic::HaltReason::CacheInvalidation);
     }
 
     void ExceptionRaised(u64 pc, Dynarmic::A64::Exception exception) override {
@@ -152,26 +139,24 @@ public:
             ReturnException(pc, PrefetchAbort);
             return;
         default:
-            if (debugger_enabled) {
+            if (m_debugger_enabled) {
                 ReturnException(pc, InstructionBreakpoint);
                 return;
             }
 
-            parent.LogBacktrace();
+            m_parent.LogBacktrace(m_process);
             LOG_CRITICAL(Core_ARM, "ExceptionRaised(exception = {}, pc = {:08X}, code = {:08X})",
-                         static_cast<std::size_t>(exception), pc, memory.Read32(pc));
+                         static_cast<std::size_t>(exception), pc, m_memory.Read32(pc));
         }
     }
 
-    void CallSVC(u32 swi) override {
-        parent.svc_swi = swi;
-        parent.jit.load()->HaltExecution(SupervisorCall);
+    void CallSVC(u32 svc) override {
+        m_parent.m_svc = svc;
+        m_parent.m_jit->HaltExecution(SupervisorCall);
     }
 
     void AddTicks(u64 ticks) override {
-        if (parent.uses_wall_clock) {
-            return;
-        }
+        ASSERT_MSG(!m_parent.m_uses_wall_clock, "Dynarmic ticking disabled");
 
         // Divide the number of ticks by the amount of CPU cores. TODO(Subv): This yields only a
         // rough approximation of the amount of executed ticks in the system, it may be thrown off
@@ -182,44 +167,39 @@ public:
         // Always execute at least one tick.
         amortized_ticks = std::max<u64>(amortized_ticks, 1);
 
-        parent.system.CoreTiming().AddTicks(amortized_ticks);
+        m_parent.m_system.CoreTiming().AddTicks(amortized_ticks);
     }
 
     u64 GetTicksRemaining() override {
-        if (parent.uses_wall_clock) {
-            if (!IsInterrupted()) {
-                return minimum_run_cycles;
-            }
-            return 0U;
-        }
+        ASSERT_MSG(!m_parent.m_uses_wall_clock, "Dynarmic ticking disabled");
 
-        return std::max<s64>(parent.system.CoreTiming().GetDowncount(), 0);
+        return std::max<s64>(m_parent.m_system.CoreTiming().GetDowncount(), 0);
     }
 
     u64 GetCNTPCT() override {
-        return parent.system.CoreTiming().GetClockTicks();
+        return m_parent.m_system.CoreTiming().GetClockTicks();
     }
 
     bool CheckMemoryAccess(u64 addr, u64 size, Kernel::DebugWatchpointType type) {
-        if (!check_memory_access) {
+        if (!m_check_memory_access) {
             return true;
         }
 
-        if (!memory.IsValidVirtualAddressRange(addr, size)) {
+        if (!m_memory.IsValidVirtualAddressRange(addr, size)) {
             LOG_CRITICAL(Core_ARM, "Stopping execution due to unmapped memory access at {:#x}",
                          addr);
-            parent.jit.load()->HaltExecution(PrefetchAbort);
+            m_parent.m_jit->HaltExecution(PrefetchAbort);
             return false;
         }
 
-        if (!debugger_enabled) {
+        if (!m_debugger_enabled) {
             return true;
         }
 
-        const auto match{parent.MatchingWatchpoint(addr, size, type)};
+        const auto match{m_parent.MatchingWatchpoint(addr, size, type)};
         if (match) {
-            parent.halted_watchpoint = match;
-            parent.jit.load()->HaltExecution(DataAbort);
+            m_parent.m_halted_watchpoint = match;
+            m_parent.m_jit->HaltExecution(DataAbort);
             return false;
         }
 
@@ -227,30 +207,27 @@ public:
     }
 
     void ReturnException(u64 pc, Dynarmic::HaltReason hr) {
-        parent.SaveContext(parent.breakpoint_context);
-        parent.breakpoint_context.pc = pc;
-        parent.jit.load()->HaltExecution(hr);
+        m_parent.GetContext(m_parent.m_breakpoint_context);
+        m_parent.m_breakpoint_context.pc = pc;
+        m_parent.m_jit->HaltExecution(hr);
     }
 
-    bool IsInterrupted() {
-        return parent.system.Kernel().PhysicalCore(parent.core_index).IsInterrupted();
-    }
-
-    ARM_Dynarmic_64& parent;
-    Core::Memory::Memory& memory;
-    u64 tpidrro_el0 = 0;
-    u64 tpidr_el0 = 0;
-    const bool debugger_enabled{};
-    const bool check_memory_access{};
-    static constexpr u64 minimum_run_cycles = 10000U;
+    ArmDynarmic64& m_parent;
+    Core::Memory::Memory& m_memory;
+    u64 m_tpidrro_el0{};
+    u64 m_tpidr_el0{};
+    const Kernel::KProcess* m_process{};
+    const bool m_debugger_enabled{};
+    const bool m_check_memory_access{};
+    static constexpr u64 MinimumRunCycles = 10000U;
 };
 
-std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable* page_table,
-                                                             std::size_t address_space_bits) const {
+std::shared_ptr<Dynarmic::A64::Jit> ArmDynarmic64::MakeJit(Common::PageTable* page_table,
+                                                           std::size_t address_space_bits) const {
     Dynarmic::A64::UserConfig config;
 
     // Callbacks
-    config.callbacks = cb.get();
+    config.callbacks = m_cb.get();
 
     // Memory
     if (page_table) {
@@ -271,12 +248,12 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable*
     }
 
     // Multi-process state
-    config.processor_id = core_index;
-    config.global_monitor = &exclusive_monitor.monitor;
+    config.processor_id = m_core_index;
+    config.global_monitor = &m_exclusive_monitor.monitor;
 
     // System registers
-    config.tpidrro_el0 = &cb->tpidrro_el0;
-    config.tpidr_el0 = &cb->tpidr_el0;
+    config.tpidrro_el0 = &m_cb->m_tpidrro_el0;
+    config.tpidr_el0 = &m_cb->m_tpidr_el0;
     config.dczid_el0 = 4;
     config.ctr_el0 = 0x8444c004;
     config.cntfrq_el0 = Hardware::CNTFREQ;
@@ -285,8 +262,8 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable*
     config.define_unpredictable_behaviour = true;
 
     // Timing
-    config.wall_clock_cntpct = uses_wall_clock;
-    config.enable_cycle_counting = true;
+    config.wall_clock_cntpct = m_uses_wall_clock;
+    config.enable_cycle_counting = !m_uses_wall_clock;
 
     // Code cache size
 #ifdef ARCHITECTURE_arm64
@@ -296,7 +273,7 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable*
 #endif
 
     // Allow memory fault handling to work
-    if (system.DebuggerEnabled()) {
+    if (m_system.DebuggerEnabled()) {
         config.check_halt_on_memory_access = true;
     }
 
@@ -384,147 +361,112 @@ std::shared_ptr<Dynarmic::A64::Jit> ARM_Dynarmic_64::MakeJit(Common::PageTable*
     return std::make_shared<Dynarmic::A64::Jit>(config);
 }
 
-HaltReason ARM_Dynarmic_64::RunJit() {
-    return TranslateHaltReason(jit.load()->Run());
+HaltReason ArmDynarmic64::RunThread(Kernel::KThread* thread) {
+    m_jit->ClearExclusiveState();
+    return TranslateHaltReason(m_jit->Run());
 }
 
-HaltReason ARM_Dynarmic_64::StepJit() {
-    return TranslateHaltReason(jit.load()->Step());
+HaltReason ArmDynarmic64::StepThread(Kernel::KThread* thread) {
+    m_jit->ClearExclusiveState();
+    return TranslateHaltReason(m_jit->Step());
 }
 
-u32 ARM_Dynarmic_64::GetSvcNumber() const {
-    return svc_swi;
+u32 ArmDynarmic64::GetSvcNumber() const {
+    return m_svc;
 }
 
-const Kernel::DebugWatchpoint* ARM_Dynarmic_64::HaltedWatchpoint() const {
-    return halted_watchpoint;
-}
+void ArmDynarmic64::GetSvcArguments(std::span<uint64_t, 8> args) const {
+    Dynarmic::A64::Jit& j = *m_jit;
 
-void ARM_Dynarmic_64::RewindBreakpointInstruction() {
-    LoadContext(breakpoint_context);
-}
-
-ARM_Dynarmic_64::ARM_Dynarmic_64(System& system_, bool uses_wall_clock_,
-                                 DynarmicExclusiveMonitor& exclusive_monitor_,
-                                 std::size_t core_index_)
-    : ARM_Interface{system_, uses_wall_clock_},
-      cb(std::make_unique<DynarmicCallbacks64>(*this)), core_index{core_index_},
-      exclusive_monitor{exclusive_monitor_}, null_jit{MakeJit(nullptr, 48)}, jit{null_jit.get()} {}
-
-ARM_Dynarmic_64::~ARM_Dynarmic_64() = default;
-
-void ARM_Dynarmic_64::SetPC(u64 pc) {
-    jit.load()->SetPC(pc);
-}
-
-u64 ARM_Dynarmic_64::GetPC() const {
-    return jit.load()->GetPC();
-}
-
-u64 ARM_Dynarmic_64::GetSP() const {
-    return jit.load()->GetSP();
-}
-
-u64 ARM_Dynarmic_64::GetReg(int index) const {
-    return jit.load()->GetRegister(index);
-}
-
-void ARM_Dynarmic_64::SetReg(int index, u64 value) {
-    jit.load()->SetRegister(index, value);
-}
-
-u128 ARM_Dynarmic_64::GetVectorReg(int index) const {
-    return jit.load()->GetVector(index);
-}
-
-void ARM_Dynarmic_64::SetVectorReg(int index, u128 value) {
-    jit.load()->SetVector(index, value);
-}
-
-u32 ARM_Dynarmic_64::GetPSTATE() const {
-    return jit.load()->GetPstate();
-}
-
-void ARM_Dynarmic_64::SetPSTATE(u32 pstate) {
-    jit.load()->SetPstate(pstate);
-}
-
-u64 ARM_Dynarmic_64::GetTlsAddress() const {
-    return cb->tpidrro_el0;
-}
-
-void ARM_Dynarmic_64::SetTlsAddress(u64 address) {
-    cb->tpidrro_el0 = address;
-}
-
-u64 ARM_Dynarmic_64::GetTPIDR_EL0() const {
-    return cb->tpidr_el0;
-}
-
-void ARM_Dynarmic_64::SetTPIDR_EL0(u64 value) {
-    cb->tpidr_el0 = value;
-}
-
-void ARM_Dynarmic_64::SaveContext(ThreadContext64& ctx) const {
-    Dynarmic::A64::Jit* j = jit.load();
-    ctx.cpu_registers = j->GetRegisters();
-    ctx.sp = j->GetSP();
-    ctx.pc = j->GetPC();
-    ctx.pstate = j->GetPstate();
-    ctx.vector_registers = j->GetVectors();
-    ctx.fpcr = j->GetFpcr();
-    ctx.fpsr = j->GetFpsr();
-    ctx.tpidr = cb->tpidr_el0;
-}
-
-void ARM_Dynarmic_64::LoadContext(const ThreadContext64& ctx) {
-    Dynarmic::A64::Jit* j = jit.load();
-    j->SetRegisters(ctx.cpu_registers);
-    j->SetSP(ctx.sp);
-    j->SetPC(ctx.pc);
-    j->SetPstate(ctx.pstate);
-    j->SetVectors(ctx.vector_registers);
-    j->SetFpcr(ctx.fpcr);
-    j->SetFpsr(ctx.fpsr);
-    SetTPIDR_EL0(ctx.tpidr);
-}
-
-void ARM_Dynarmic_64::SignalInterrupt() {
-    jit.load()->HaltExecution(BreakLoop);
-}
-
-void ARM_Dynarmic_64::ClearInterrupt() {
-    jit.load()->ClearHalt(BreakLoop);
-}
-
-void ARM_Dynarmic_64::ClearInstructionCache() {
-    jit.load()->ClearCache();
-}
-
-void ARM_Dynarmic_64::InvalidateCacheRange(u64 addr, std::size_t size) {
-    jit.load()->InvalidateCacheRange(addr, size);
-}
-
-void ARM_Dynarmic_64::ClearExclusiveState() {
-    jit.load()->ClearExclusiveState();
-}
-
-void ARM_Dynarmic_64::PageTableChanged(Common::PageTable& page_table,
-                                       std::size_t new_address_space_size_in_bits) {
-    ThreadContext64 ctx{};
-    SaveContext(ctx);
-
-    auto key = std::make_pair(&page_table, new_address_space_size_in_bits);
-    auto iter = jit_cache.find(key);
-    if (iter != jit_cache.end()) {
-        jit.store(iter->second.get());
-        LoadContext(ctx);
-        return;
+    for (size_t i = 0; i < 8; i++) {
+        args[i] = j.GetRegister(i);
     }
-    std::shared_ptr new_jit = MakeJit(&page_table, new_address_space_size_in_bits);
-    jit.store(new_jit.get());
-    LoadContext(ctx);
-    jit_cache.emplace(key, std::move(new_jit));
+}
+
+void ArmDynarmic64::SetSvcArguments(std::span<const uint64_t, 8> args) {
+    Dynarmic::A64::Jit& j = *m_jit;
+
+    for (size_t i = 0; i < 8; i++) {
+        j.SetRegister(i, args[i]);
+    }
+}
+
+const Kernel::DebugWatchpoint* ArmDynarmic64::HaltedWatchpoint() const {
+    return m_halted_watchpoint;
+}
+
+void ArmDynarmic64::RewindBreakpointInstruction() {
+    this->SetContext(m_breakpoint_context);
+}
+
+ArmDynarmic64::ArmDynarmic64(System& system, bool uses_wall_clock, const Kernel::KProcess* process,
+                             DynarmicExclusiveMonitor& exclusive_monitor, std::size_t core_index)
+    : ArmInterface{uses_wall_clock}, m_system{system}, m_exclusive_monitor{exclusive_monitor},
+      m_cb(std::make_unique<DynarmicCallbacks64>(*this, process)), m_core_index{core_index} {
+    auto& page_table = process->GetPageTable().GetBasePageTable();
+    auto& page_table_impl = page_table.GetImpl();
+    m_jit = MakeJit(&page_table_impl, page_table.GetAddressSpaceWidth());
+}
+
+ArmDynarmic64::~ArmDynarmic64() = default;
+
+void ArmDynarmic64::SetTpidrroEl0(u64 value) {
+    m_cb->m_tpidrro_el0 = value;
+}
+
+void ArmDynarmic64::GetContext(Kernel::Svc::ThreadContext& ctx) const {
+    Dynarmic::A64::Jit& j = *m_jit;
+    auto gpr = j.GetRegisters();
+    auto fpr = j.GetVectors();
+
+    // TODO: this is inconvenient
+    for (size_t i = 0; i < 29; i++) {
+        ctx.r[i] = gpr[i];
+    }
+    ctx.fp = gpr[29];
+    ctx.lr = gpr[30];
+
+    ctx.sp = j.GetSP();
+    ctx.pc = j.GetPC();
+    ctx.pstate = j.GetPstate();
+    ctx.v = fpr;
+    ctx.fpcr = j.GetFpcr();
+    ctx.fpsr = j.GetFpsr();
+    ctx.tpidr = m_cb->m_tpidr_el0;
+}
+
+void ArmDynarmic64::SetContext(const Kernel::Svc::ThreadContext& ctx) {
+    Dynarmic::A64::Jit& j = *m_jit;
+
+    // TODO: this is inconvenient
+    std::array<u64, 31> gpr;
+
+    for (size_t i = 0; i < 29; i++) {
+        gpr[i] = ctx.r[i];
+    }
+    gpr[29] = ctx.fp;
+    gpr[30] = ctx.lr;
+
+    j.SetRegisters(gpr);
+    j.SetSP(ctx.sp);
+    j.SetPC(ctx.pc);
+    j.SetPstate(ctx.pstate);
+    j.SetVectors(ctx.v);
+    j.SetFpcr(ctx.fpcr);
+    j.SetFpsr(ctx.fpsr);
+    m_cb->m_tpidr_el0 = ctx.tpidr;
+}
+
+void ArmDynarmic64::SignalInterrupt(Kernel::KThread* thread) {
+    m_jit->HaltExecution(BreakLoop);
+}
+
+void ArmDynarmic64::ClearInstructionCache() {
+    m_jit->ClearCache();
+}
+
+void ArmDynarmic64::InvalidateCacheRange(u64 addr, std::size_t size) {
+    m_jit->InvalidateCacheRange(addr, size);
 }
 
 } // namespace Core

src/core/arm/dynarmic/arm_dynarmic_64.h

@@ -23,76 +23,55 @@ class DynarmicCallbacks64;
 class DynarmicExclusiveMonitor;
 class System;
 
-class ARM_Dynarmic_64 final : public ARM_Interface {
+class ArmDynarmic64 final : public ArmInterface {
 public:
-    ARM_Dynarmic_64(System& system_, bool uses_wall_clock_,
-                    DynarmicExclusiveMonitor& exclusive_monitor_, std::size_t core_index_);
-    ~ARM_Dynarmic_64() 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;
+    ArmDynarmic64(System& system, bool uses_wall_clock, const Kernel::KProcess* process,
+                  DynarmicExclusiveMonitor& exclusive_monitor, std::size_t core_index);
+    ~ArmDynarmic64() override;
 
     Architecture GetArchitecture() const override {
-        return Architecture::Aarch64;
+        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;
+    HaltReason RunThread(Kernel::KThread* thread) override;
+    HaltReason StepThread(Kernel::KThread* thread) override;
 
+    void GetContext(Kernel::Svc::ThreadContext& ctx) const override;
+    void SetContext(const Kernel::Svc::ThreadContext& ctx) override;
+    void SetTpidrroEl0(u64 value) override;
+
+    void GetSvcArguments(std::span<uint64_t, 8> args) const override;
+    void SetSvcArguments(std::span<const uint64_t, 8> args) override;
+    u32 GetSvcNumber() const override;
+
+    void SignalInterrupt(Kernel::KThread* thread) 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;
     void RewindBreakpointInstruction() override;
 
 private:
+    System& m_system;
+    DynarmicExclusiveMonitor& m_exclusive_monitor;
+
+private:
+    friend class DynarmicCallbacks64;
+
     std::shared_ptr<Dynarmic::A64::Jit> MakeJit(Common::PageTable* page_table,
                                                 std::size_t address_space_bits) const;
+    std::unique_ptr<DynarmicCallbacks64> m_cb{};
+    std::size_t m_core_index{};
 
-    using JitCacheKey = std::pair<Common::PageTable*, std::size_t>;
-    using JitCacheType =
-        std::unordered_map<JitCacheKey, std::shared_ptr<Dynarmic::A64::Jit>, Common::PairHash>;
-
-    friend class DynarmicCallbacks64;
-    std::unique_ptr<DynarmicCallbacks64> cb;
-    JitCacheType jit_cache;
-
-    std::size_t core_index;
-    DynarmicExclusiveMonitor& exclusive_monitor;
-
-    std::shared_ptr<Dynarmic::A64::Jit> null_jit;
-
-    // A raw pointer here is fine; we never delete Jit instances.
-    std::atomic<Dynarmic::A64::Jit*> jit;
+    std::shared_ptr<Dynarmic::A64::Jit> m_jit{};
 
     // SVC callback
-    u32 svc_swi{};
+    u32 m_svc{};
 
-    // Breakpoint info
-    const Kernel::DebugWatchpoint* halted_watchpoint;
-    ThreadContext64 breakpoint_context;
+    // Watchpoint info
+    const Kernel::DebugWatchpoint* m_halted_watchpoint{};
+    Kernel::Svc::ThreadContext m_breakpoint_context{};
 };
 
 } // namespace Core

src/core/arm/dynarmic/dynarmic_cp15.cpp

@@ -124,8 +124,8 @@ CallbackOrAccessTwoWords DynarmicCP15::CompileGetTwoWords(bool two, unsigned opc
     if (!two && opc == 0 && CRm == CoprocReg::C14) {
         // CNTPCT
         const auto callback = [](void* arg, u32, u32) -> u64 {
-            const auto& parent_arg = *static_cast<ARM_Dynarmic_32*>(arg);
-            return parent_arg.system.CoreTiming().GetClockTicks();
+            const auto& parent_arg = *static_cast<ArmDynarmic32*>(arg);
+            return parent_arg.m_system.CoreTiming().GetClockTicks();
         };
         return Callback{callback, &parent};
     }

src/core/arm/dynarmic/dynarmic_cp15.h

@@ -10,13 +10,13 @@
 
 namespace Core {
 
-class ARM_Dynarmic_32;
+class ArmDynarmic32;
 
 class DynarmicCP15 final : public Dynarmic::A32::Coprocessor {
 public:
     using CoprocReg = Dynarmic::A32::CoprocReg;
 
-    explicit DynarmicCP15(ARM_Dynarmic_32& parent_) : parent{parent_} {}
+    explicit DynarmicCP15(ArmDynarmic32& parent_) : parent{parent_} {}
 
     std::optional<Callback> CompileInternalOperation(bool two, unsigned opc1, CoprocReg CRd,
                                                      CoprocReg CRn, CoprocReg CRm,
@@ -32,11 +32,11 @@ public:
     std::optional<Callback> CompileStoreWords(bool two, bool long_transfer, CoprocReg CRd,
                                               std::optional<u8> option) override;
 
-    ARM_Dynarmic_32& parent;
+    ArmDynarmic32& parent;
     u32 uprw = 0;
     u32 uro = 0;
 
-    friend class ARM_Dynarmic_32;
+    friend class ArmDynarmic32;
 };
 
 } // namespace Core

src/core/arm/dynarmic/dynarmic_exclusive_monitor.h

@@ -14,8 +14,8 @@ class Memory;
 
 namespace Core {
 
-class ARM_Dynarmic_32;
-class ARM_Dynarmic_64;
+class ArmDynarmic32;
+class ArmDynarmic64;
 
 class DynarmicExclusiveMonitor final : public ExclusiveMonitor {
 public:
@@ -36,8 +36,8 @@ public:
     bool ExclusiveWrite128(std::size_t core_index, VAddr vaddr, u128 value) override;
 
 private:
-    friend class ARM_Dynarmic_32;
-    friend class ARM_Dynarmic_64;
+    friend class ArmDynarmic32;
+    friend class ArmDynarmic64;
     Dynarmic::ExclusiveMonitor monitor;
     Core::Memory::Memory& memory;
 };