apm/interface: Remove redundant declaration of InstallInterfaces()

This is already declared in apm/apm.h

externals/glad/include/KHR/khrplatform.h

@@ -2,7 +2,7 @@
 #define __khrplatform_h_
 
 /*
-** Copyright (c) 2008-2009 The Khronos Group Inc.
+** Copyright (c) 2008-2018 The Khronos Group Inc.
 **
 ** Permission is hereby granted, free of charge, to any person obtaining a
 ** copy of this software and/or associated documentation files (the
@@ -26,18 +26,16 @@
 
 /* Khronos platform-specific types and definitions.
  *
- * $Revision: 32517 $ on $Date: 2016-03-11 02:41:19 -0800 (Fri, 11 Mar 2016) $
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
  *
  * Adopters may modify this file to suit their platform. Adopters are
  * encouraged to submit platform specific modifications to the Khronos
  * group so that they can be included in future versions of this file.
- * Please submit changes by sending them to the public Khronos Bugzilla
- * (http://khronos.org/bugzilla) by filing a bug against product
- * "Khronos (general)" component "Registry".
- *
- * A predefined template which fills in some of the bug fields can be
- * reached using http://tinyurl.com/khrplatform-h-bugreport, but you
- * must create a Bugzilla login first.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
  *
  *
  * See the Implementer's Guidelines for information about where this file

src/common/CMakeLists.txt

@@ -63,7 +63,6 @@ add_library(common STATIC
     string_util.cpp
     string_util.h
     swap.h
-    synchronized_wrapper.h
     telemetry.cpp
     telemetry.h
     thread.cpp

src/common/common_funcs.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <string>
+
 #if !defined(ARCHITECTURE_x86_64) && !defined(ARCHITECTURE_ARM)
 #include <cstdlib> // for exit
 #endif
@@ -36,40 +38,6 @@
 #define Crash() exit(1)
 #endif
 
-// GCC 4.8 defines all the rotate functions now
-// Small issue with GCC's lrotl/lrotr intrinsics is they are still 32bit while we require 64bit
-#ifdef _rotl
-#define rotl _rotl
-#else
-inline u32 rotl(u32 x, int shift) {
-    shift &= 31;
-    if (!shift)
-        return x;
-    return (x << shift) | (x >> (32 - shift));
-}
-#endif
-
-#ifdef _rotr
-#define rotr _rotr
-#else
-inline u32 rotr(u32 x, int shift) {
-    shift &= 31;
-    if (!shift)
-        return x;
-    return (x >> shift) | (x << (32 - shift));
-}
-#endif
-
-inline u64 _rotl64(u64 x, unsigned int shift) {
-    unsigned int n = shift % 64;
-    return (x << n) | (x >> (64 - n));
-}
-
-inline u64 _rotr64(u64 x, unsigned int shift) {
-    unsigned int n = shift % 64;
-    return (x >> n) | (x << (64 - n));
-}
-
 #else // _MSC_VER
 
 // Locale Cross-Compatibility
@@ -80,17 +48,13 @@ __declspec(dllimport) void __stdcall DebugBreak(void);
 }
 #define Crash() DebugBreak()
 
-// cstdlib provides these on MSVC
-#define rotr _rotr
-#define rotl _rotl
-
 #endif // _MSC_VER ndef
 
 // Generic function to get last error message.
 // Call directly after the command or use the error num.
 // This function might change the error code.
 // Defined in Misc.cpp.
-const char* GetLastErrorMsg();
+std::string GetLastErrorMsg();
 
 namespace Common {
 

src/common/common_paths.h

@@ -26,7 +26,7 @@
 #define USA_DIR "USA"
 #define JAP_DIR "JAP"
 
-// Subdirs in the User dir returned by GetUserPath(D_USER_IDX)
+// Subdirs in the User dir returned by GetUserPath(UserPath::UserDir)
 #define CONFIG_DIR "config"
 #define CACHE_DIR "cache"
 #define SDMC_DIR "sdmc"
@@ -35,11 +35,11 @@
 #define LOG_DIR "log"
 
 // Filenames
-// Files in the directory returned by GetUserPath(D_CONFIG_IDX)
+// Files in the directory returned by GetUserPath(UserPath::ConfigDir)
 #define EMU_CONFIG "emu.ini"
 #define DEBUGGER_CONFIG "debugger.ini"
 #define LOGGER_CONFIG "logger.ini"
-// Files in the directory returned by GetUserPath(D_LOGS_IDX)
+// Files in the directory returned by GetUserPath(UserPath::LogDir)
 #define LOG_FILE "yuzu_log.txt"
 
 // Sys files

src/common/file_util.cpp

@@ -2,7 +2,10 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <array>
+#include <memory>
 #include <sstream>
+#include <unordered_map>
 #include "common/assert.h"
 #include "common/common_funcs.h"
 #include "common/common_paths.h"
@@ -274,14 +277,10 @@ bool Copy(const std::string& srcFilename, const std::string& destFilename) {
               GetLastErrorMsg());
     return false;
 #else
-
-// buffer size
-#define BSIZE 1024
-
-    char buffer[BSIZE];
+    using CFilePointer = std::unique_ptr<FILE, decltype(&std::fclose)>;
 
     // Open input file
-    FILE* input = fopen(srcFilename.c_str(), "rb");
+    CFilePointer input{fopen(srcFilename.c_str(), "rb"), std::fclose};
     if (!input) {
         LOG_ERROR(Common_Filesystem, "opening input failed {} --> {}: {}", srcFilename,
                   destFilename, GetLastErrorMsg());
@@ -289,44 +288,36 @@ bool Copy(const std::string& srcFilename, const std::string& destFilename) {
     }
 
     // open output file
-    FILE* output = fopen(destFilename.c_str(), "wb");
+    CFilePointer output{fopen(destFilename.c_str(), "wb"), std::fclose};
     if (!output) {
-        fclose(input);
         LOG_ERROR(Common_Filesystem, "opening output failed {} --> {}: {}", srcFilename,
                   destFilename, GetLastErrorMsg());
         return false;
     }
 
     // copy loop
-    while (!feof(input)) {
+    std::array<char, 1024> buffer;
+    while (!feof(input.get())) {
         // read input
-        size_t rnum = fread(buffer, sizeof(char), BSIZE, input);
-        if (rnum != BSIZE) {
-            if (ferror(input) != 0) {
+        size_t rnum = fread(buffer.data(), sizeof(char), buffer.size(), input.get());
+        if (rnum != buffer.size()) {
+            if (ferror(input.get()) != 0) {
                 LOG_ERROR(Common_Filesystem, "failed reading from source, {} --> {}: {}",
                           srcFilename, destFilename, GetLastErrorMsg());
-                goto bail;
+                return false;
             }
         }
 
         // write output
-        size_t wnum = fwrite(buffer, sizeof(char), rnum, output);
+        size_t wnum = fwrite(buffer.data(), sizeof(char), rnum, output.get());
         if (wnum != rnum) {
             LOG_ERROR(Common_Filesystem, "failed writing to output, {} --> {}: {}", srcFilename,
                       destFilename, GetLastErrorMsg());
-            goto bail;
+            return false;
         }
     }
-    // close files
-    fclose(input);
-    fclose(output);
+
     return true;
-bail:
-    if (input)
-        fclose(input);
-    if (output)
-        fclose(output);
-    return false;
 #endif
 }
 
@@ -395,12 +386,12 @@ bool CreateEmptyFile(const std::string& filename) {
     return true;
 }
 
-bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string& directory,
+bool ForeachDirectoryEntry(u64* num_entries_out, const std::string& directory,
                            DirectoryEntryCallable callback) {
     LOG_TRACE(Common_Filesystem, "directory {}", directory);
 
     // How many files + directories we found
-    unsigned found_entries = 0;
+    u64 found_entries = 0;
 
     // Save the status of callback function
     bool callback_error = false;
@@ -430,7 +421,7 @@ bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string& directo
         if (virtual_name == "." || virtual_name == "..")
             continue;
 
-        unsigned ret_entries = 0;
+        u64 ret_entries = 0;
         if (!callback(&ret_entries, directory, virtual_name)) {
             callback_error = true;
             break;
@@ -454,9 +445,9 @@ bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string& directo
     return true;
 }
 
-unsigned ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
-                           unsigned int recursion) {
-    const auto callback = [recursion, &parent_entry](unsigned* num_entries_out,
+u64 ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
+                      unsigned int recursion) {
+    const auto callback = [recursion, &parent_entry](u64* num_entries_out,
                                                      const std::string& directory,
                                                      const std::string& virtual_name) -> bool {
         FSTEntry entry;
@@ -468,7 +459,7 @@ unsigned ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
             // is a directory, lets go inside if we didn't recurse to often
             if (recursion > 0) {
                 entry.size = ScanDirectoryTree(entry.physicalName, entry, recursion - 1);
-                *num_entries_out += (int)entry.size;
+                *num_entries_out += entry.size;
             } else {
                 entry.size = 0;
             }
@@ -479,16 +470,16 @@ unsigned ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
         (*num_entries_out)++;
 
         // Push into the tree
-        parent_entry.children.push_back(entry);
+        parent_entry.children.push_back(std::move(entry));
         return true;
     };
 
-    unsigned num_entries;
+    u64 num_entries;
     return ForeachDirectoryEntry(&num_entries, directory, callback) ? num_entries : 0;
 }
 
 bool DeleteDirRecursively(const std::string& directory, unsigned int recursion) {
-    const auto callback = [recursion](unsigned* num_entries_out, const std::string& directory,
+    const auto callback = [recursion](u64* num_entries_out, const std::string& directory,
                                       const std::string& virtual_name) -> bool {
         std::string new_path = directory + DIR_SEP_CHR + virtual_name;
 
@@ -592,7 +583,7 @@ std::string GetBundleDirectory() {
 #endif
 
 #ifdef _WIN32
-std::string& GetExeDirectory() {
+const std::string& GetExeDirectory() {
     static std::string exe_path;
     if (exe_path.empty()) {
         wchar_t wchar_exe_path[2048];
@@ -681,67 +672,68 @@ std::string GetSysDirectory() {
 
 // Returns a string with a yuzu data dir or file in the user's home
 // directory. To be used in "multi-user" mode (that is, installed).
-const std::string& GetUserPath(const unsigned int DirIDX, const std::string& newPath) {
-    static std::string paths[NUM_PATH_INDICES];
+const std::string& GetUserPath(UserPath path, const std::string& new_path) {
+    static std::unordered_map<UserPath, std::string> paths;
+    auto& user_path = paths[UserPath::UserDir];
 
     // Set up all paths and files on the first run
-    if (paths[D_USER_IDX].empty()) {
+    if (user_path.empty()) {
 #ifdef _WIN32
-        paths[D_USER_IDX] = GetExeDirectory() + DIR_SEP USERDATA_DIR DIR_SEP;
-        if (!FileUtil::IsDirectory(paths[D_USER_IDX])) {
-            paths[D_USER_IDX] = AppDataRoamingDirectory() + DIR_SEP EMU_DATA_DIR DIR_SEP;
+        user_path = GetExeDirectory() + DIR_SEP USERDATA_DIR DIR_SEP;
+        if (!FileUtil::IsDirectory(user_path)) {
+            user_path = AppDataRoamingDirectory() + DIR_SEP EMU_DATA_DIR DIR_SEP;
         } else {
             LOG_INFO(Common_Filesystem, "Using the local user directory");
         }
 
-        paths[D_CONFIG_IDX] = paths[D_USER_IDX] + CONFIG_DIR DIR_SEP;
-        paths[D_CACHE_IDX] = paths[D_USER_IDX] + CACHE_DIR DIR_SEP;
+        paths.emplace(UserPath::ConfigDir, user_path + CONFIG_DIR DIR_SEP);
+        paths.emplace(UserPath::CacheDir, user_path + CACHE_DIR DIR_SEP);
 #else
         if (FileUtil::Exists(ROOT_DIR DIR_SEP USERDATA_DIR)) {
-            paths[D_USER_IDX] = ROOT_DIR DIR_SEP USERDATA_DIR DIR_SEP;
-            paths[D_CONFIG_IDX] = paths[D_USER_IDX] + CONFIG_DIR DIR_SEP;
-            paths[D_CACHE_IDX] = paths[D_USER_IDX] + CACHE_DIR DIR_SEP;
+            user_path = ROOT_DIR DIR_SEP USERDATA_DIR DIR_SEP;
+            paths.emplace(UserPath::ConfigDir, user_path + CONFIG_DIR DIR_SEP);
+            paths.emplace(UserPath::CacheDir, user_path + CACHE_DIR DIR_SEP);
         } else {
             std::string data_dir = GetUserDirectory("XDG_DATA_HOME");
             std::string config_dir = GetUserDirectory("XDG_CONFIG_HOME");
             std::string cache_dir = GetUserDirectory("XDG_CACHE_HOME");
 
-            paths[D_USER_IDX] = data_dir + DIR_SEP EMU_DATA_DIR DIR_SEP;
-            paths[D_CONFIG_IDX] = config_dir + DIR_SEP EMU_DATA_DIR DIR_SEP;
-            paths[D_CACHE_IDX] = cache_dir + DIR_SEP EMU_DATA_DIR DIR_SEP;
+            user_path = data_dir + DIR_SEP EMU_DATA_DIR DIR_SEP;
+            paths.emplace(UserPath::ConfigDir, config_dir + DIR_SEP EMU_DATA_DIR DIR_SEP);
+            paths.emplace(UserPath::CacheDir, cache_dir + DIR_SEP EMU_DATA_DIR DIR_SEP);
         }
 #endif
-        paths[D_SDMC_IDX] = paths[D_USER_IDX] + SDMC_DIR DIR_SEP;
-        paths[D_NAND_IDX] = paths[D_USER_IDX] + NAND_DIR DIR_SEP;
-        paths[D_SYSDATA_IDX] = paths[D_USER_IDX] + SYSDATA_DIR DIR_SEP;
+        paths.emplace(UserPath::SDMCDir, user_path + SDMC_DIR DIR_SEP);
+        paths.emplace(UserPath::NANDDir, user_path + NAND_DIR DIR_SEP);
+        paths.emplace(UserPath::SysDataDir, user_path + SYSDATA_DIR DIR_SEP);
         // TODO: Put the logs in a better location for each OS
-        paths[D_LOGS_IDX] = paths[D_USER_IDX] + LOG_DIR DIR_SEP;
+        paths.emplace(UserPath::LogDir, user_path + LOG_DIR DIR_SEP);
     }
 
-    if (!newPath.empty()) {
-        if (!FileUtil::IsDirectory(newPath)) {
-            LOG_ERROR(Common_Filesystem, "Invalid path specified {}", newPath);
-            return paths[DirIDX];
+    if (!new_path.empty()) {
+        if (!FileUtil::IsDirectory(new_path)) {
+            LOG_ERROR(Common_Filesystem, "Invalid path specified {}", new_path);
+            return paths[path];
         } else {
-            paths[DirIDX] = newPath;
+            paths[path] = new_path;
         }
 
-        switch (DirIDX) {
-        case D_ROOT_IDX:
-            paths[D_USER_IDX] = paths[D_ROOT_IDX] + DIR_SEP;
+        switch (path) {
+        case UserPath::RootDir:
+            user_path = paths[UserPath::RootDir] + DIR_SEP;
             break;
 
-        case D_USER_IDX:
-            paths[D_USER_IDX] = paths[D_ROOT_IDX] + DIR_SEP;
-            paths[D_CONFIG_IDX] = paths[D_USER_IDX] + CONFIG_DIR DIR_SEP;
-            paths[D_CACHE_IDX] = paths[D_USER_IDX] + CACHE_DIR DIR_SEP;
-            paths[D_SDMC_IDX] = paths[D_USER_IDX] + SDMC_DIR DIR_SEP;
-            paths[D_NAND_IDX] = paths[D_USER_IDX] + NAND_DIR DIR_SEP;
+        case UserPath::UserDir:
+            user_path = paths[UserPath::RootDir] + DIR_SEP;
+            paths[UserPath::ConfigDir] = user_path + CONFIG_DIR DIR_SEP;
+            paths[UserPath::CacheDir] = user_path + CACHE_DIR DIR_SEP;
+            paths[UserPath::SDMCDir] = user_path + SDMC_DIR DIR_SEP;
+            paths[UserPath::NANDDir] = user_path + NAND_DIR DIR_SEP;
             break;
         }
     }
 
-    return paths[DirIDX];
+    return paths[path];
 }
 
 size_t WriteStringToFile(bool text_file, const std::string& str, const char* filename) {
@@ -800,71 +792,93 @@ void SplitFilename83(const std::string& filename, std::array<char, 9>& short_nam
     }
 }
 
-std::vector<std::string> SplitPathComponents(const std::string& filename) {
-    auto copy(filename);
+std::vector<std::string> SplitPathComponents(std::string_view filename) {
+    std::string copy(filename);
     std::replace(copy.begin(), copy.end(), '\\', '/');
     std::vector<std::string> out;
 
-    std::stringstream stream(filename);
+    std::stringstream stream(copy);
     std::string item;
-    while (std::getline(stream, item, '/'))
+    while (std::getline(stream, item, '/')) {
         out.push_back(std::move(item));
+    }
 
     return out;
 }
 
-std::string GetParentPath(const std::string& path) {
-    auto out = path;
-    const auto name_bck_index = out.find_last_of('\\');
-    const auto name_fwd_index = out.find_last_of('/');
+std::string_view GetParentPath(std::string_view path) {
+    const auto name_bck_index = path.rfind('\\');
+    const auto name_fwd_index = path.rfind('/');
     size_t name_index;
-    if (name_bck_index == std::string::npos || name_fwd_index == std::string::npos)
-        name_index = std::min<size_t>(name_bck_index, name_fwd_index);
-    else
-        name_index = std::max<size_t>(name_bck_index, name_fwd_index);
 
-    return out.erase(name_index);
-}
-
-std::string GetPathWithoutTop(std::string path) {
-    if (path.empty())
-        return "";
-    while (path[0] == '\\' || path[0] == '/') {
-        path = path.substr(1);
-        if (path.empty())
-            return "";
+    if (name_bck_index == std::string_view::npos || name_fwd_index == std::string_view::npos) {
+        name_index = std::min(name_bck_index, name_fwd_index);
+    } else {
+        name_index = std::max(name_bck_index, name_fwd_index);
     }
-    const auto name_bck_index = path.find_first_of('\\');
-    const auto name_fwd_index = path.find_first_of('/');
-    return path.substr(std::min<size_t>(name_bck_index, name_fwd_index) + 1);
-    return path.substr(std::min<size_t>(name_bck_index, name_fwd_index) + 1);
+
+    return path.substr(0, name_index);
 }
 
-std::string GetFilename(std::string path) {
-    std::replace(path.begin(), path.end(), '\\', '/');
-    auto name_index = path.find_last_of('/');
-    if (name_index == std::string::npos)
-        return "";
+std::string_view GetPathWithoutTop(std::string_view path) {
+    if (path.empty()) {
+        return path;
+    }
+
+    while (path[0] == '\\' || path[0] == '/') {
+        path.remove_prefix(1);
+        if (path.empty()) {
+            return path;
+        }
+    }
+
+    const auto name_bck_index = path.find('\\');
+    const auto name_fwd_index = path.find('/');
+    return path.substr(std::min(name_bck_index, name_fwd_index) + 1);
+}
+
+std::string_view GetFilename(std::string_view path) {
+    const auto name_index = path.find_last_of("\\/");
+
+    if (name_index == std::string_view::npos) {
+        return {};
+    }
+
     return path.substr(name_index + 1);
 }
 
-std::string GetExtensionFromFilename(const std::string& name) {
-    size_t index = name.find_last_of('.');
-    if (index == std::string::npos)
-        return "";
+std::string_view GetExtensionFromFilename(std::string_view name) {
+    const size_t index = name.rfind('.');
+
+    if (index == std::string_view::npos) {
+        return {};
+    }
 
     return name.substr(index + 1);
 }
 
-std::string RemoveTrailingSlash(const std::string& path) {
-    if (path.empty())
+std::string_view RemoveTrailingSlash(std::string_view path) {
+    if (path.empty()) {
         return path;
-    if (path.back() == '\\' || path.back() == '/')
-        return path.substr(0, path.size() - 1);
+    }
+
+    if (path.back() == '\\' || path.back() == '/') {
+        path.remove_suffix(1);
+        return path;
+    }
 
     return path;
 }
 
+std::string SanitizePath(std::string_view path_) {
+    std::string path(path_);
+    std::replace(path.begin(), path.end(), '\\', '/');
+    path.erase(std::unique(path.begin(), path.end(),
+                           [](char c1, char c2) { return c1 == '/' && c2 == '/'; }),
+               path.end());
+    return std::string(RemoveTrailingSlash(path));
+}
+
 IOFile::IOFile() {}
 
 IOFile::IOFile(const std::string& filename, const char openmode[], int flags) {

src/common/file_util.h

@@ -9,6 +9,7 @@
 #include <fstream>
 #include <functional>
 #include <string>
+#include <string_view>
 #include <type_traits>
 #include <vector>
 #include "common/common_types.h"
@@ -16,21 +17,20 @@
 #include "common/string_util.h"
 #endif
 
-// User directory indices for GetUserPath
-enum {
-    D_USER_IDX,
-    D_ROOT_IDX,
-    D_CONFIG_IDX,
-    D_CACHE_IDX,
-    D_SDMC_IDX,
-    D_NAND_IDX,
-    D_SYSDATA_IDX,
-    D_LOGS_IDX,
-    NUM_PATH_INDICES
-};
-
 namespace FileUtil {
 
+// User paths for GetUserPath
+enum class UserPath {
+    CacheDir,
+    ConfigDir,
+    LogDir,
+    NANDDir,
+    RootDir,
+    SDMCDir,
+    SysDataDir,
+    UserDir,
+};
+
 // FileSystem tree node/
 struct FSTEntry {
     bool isDirectory;
@@ -85,7 +85,7 @@ bool CreateEmptyFile(const std::string& filename);
  * @return whether handling the entry succeeded
  */
 using DirectoryEntryCallable = std::function<bool(
-    unsigned* num_entries_out, const std::string& directory, const std::string& virtual_name)>;
+    u64* num_entries_out, const std::string& directory, const std::string& virtual_name)>;
 
 /**
  * Scans a directory, calling the callback for each file/directory contained within.
@@ -96,7 +96,7 @@ using DirectoryEntryCallable = std::function<bool(
  * @param callback The callback which will be called for each entry
  * @return whether scanning the directory succeeded
  */
-bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string& directory,
+bool ForeachDirectoryEntry(u64* num_entries_out, const std::string& directory,
                            DirectoryEntryCallable callback);
 
 /**
@@ -106,8 +106,8 @@ bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string& directo
  * @param recursion Number of children directories to read before giving up.
  * @return the total number of files/directories found
  */
-unsigned ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
-                           unsigned int recursion = 0);
+u64 ScanDirectoryTree(const std::string& directory, FSTEntry& parent_entry,
+                      unsigned int recursion = 0);
 
 // deletes the given directory and anything under it. Returns true on success.
 bool DeleteDirRecursively(const std::string& directory, unsigned int recursion = 256);
@@ -123,7 +123,7 @@ bool SetCurrentDir(const std::string& directory);
 
 // Returns a pointer to a string with a yuzu data dir in the user's home
 // directory. To be used in "multi-user" mode (that is, installed).
-const std::string& GetUserPath(const unsigned int DirIDX, const std::string& newPath = "");
+const std::string& GetUserPath(UserPath path, const std::string& new_path = "");
 
 // Returns the path to where the sys file are
 std::string GetSysDirectory();
@@ -133,7 +133,7 @@ std::string GetBundleDirectory();
 #endif
 
 #ifdef _WIN32
-std::string& GetExeDirectory();
+const std::string& GetExeDirectory();
 std::string AppDataRoamingDirectory();
 #endif
 
@@ -152,22 +152,22 @@ void SplitFilename83(const std::string& filename, std::array<char, 9>& short_nam
 
 // Splits the path on '/' or '\' and put the components into a vector
 // i.e. "C:\Users\Yuzu\Documents\save.bin" becomes {"C:", "Users", "Yuzu", "Documents", "save.bin" }
-std::vector<std::string> SplitPathComponents(const std::string& filename);
+std::vector<std::string> SplitPathComponents(std::string_view filename);
 
 // Gets all of the text up to the last '/' or '\' in the path.
-std::string GetParentPath(const std::string& path);
+std::string_view GetParentPath(std::string_view path);
 
 // Gets all of the text after the first '/' or '\' in the path.
-std::string GetPathWithoutTop(std::string path);
+std::string_view GetPathWithoutTop(std::string_view path);
 
 // Gets the filename of the path
-std::string GetFilename(std::string path);
+std::string_view GetFilename(std::string_view path);
 
 // Gets the extension of the filename
-std::string GetExtensionFromFilename(const std::string& name);
+std::string_view GetExtensionFromFilename(std::string_view name);
 
 // Removes the final '/' or '\' if one exists
-std::string RemoveTrailingSlash(const std::string& path);
+std::string_view RemoveTrailingSlash(std::string_view path);
 
 // Creates a new vector containing indices [first, last) from the original.
 template <typename T>
@@ -178,6 +178,9 @@ std::vector<T> SliceVector(const std::vector<T>& vector, size_t first, size_t la
     return std::vector<T>(vector.begin() + first, vector.begin() + first + last);
 }
 
+// Removes trailing slash, makes all '\\' into '/', and removes duplicate '/'.
+std::string SanitizePath(std::string_view path);
+
 // simple wrapper for cstdlib file functions to
 // hopefully will make error checking easier
 // and make forgetting an fclose() harder

src/common/logging/backend.cpp

@@ -3,19 +3,20 @@
 // Refer to the license.txt file included.
 
 #include <algorithm>
-#include <array>
+#include <atomic>
 #include <chrono>
 #include <climits>
 #include <condition_variable>
 #include <memory>
+#include <mutex>
 #include <thread>
+#include <vector>
 #ifdef _WIN32
 #include <share.h> // For _SH_DENYWR
 #else
 #define _SH_DENYWR 0
 #endif
 #include "common/assert.h"
-#include "common/common_funcs.h" // snprintf compatibility define
 #include "common/logging/backend.h"
 #include "common/logging/log.h"
 #include "common/logging/text_formatter.h"
@@ -48,11 +49,11 @@ public:
         backends.push_back(std::move(backend));
     }
 
-    void RemoveBackend(const std::string& backend_name) {
+    void RemoveBackend(std::string_view backend_name) {
         std::lock_guard<std::mutex> lock(writing_mutex);
-        auto it = std::remove_if(backends.begin(), backends.end(), [&backend_name](const auto& i) {
-            return !strcmp(i->GetName(), backend_name.c_str());
-        });
+        const auto it =
+            std::remove_if(backends.begin(), backends.end(),
+                           [&backend_name](const auto& i) { return backend_name == i->GetName(); });
         backends.erase(it, backends.end());
     }
 
@@ -64,10 +65,10 @@ public:
         filter = f;
     }
 
-    Backend* GetBackend(const std::string& backend_name) {
-        auto it = std::find_if(backends.begin(), backends.end(), [&backend_name](const auto& i) {
-            return !strcmp(i->GetName(), backend_name.c_str());
-        });
+    Backend* GetBackend(std::string_view backend_name) {
+        const auto it =
+            std::find_if(backends.begin(), backends.end(),
+                         [&backend_name](const auto& i) { return backend_name == i->GetName(); });
         if (it == backends.end())
             return nullptr;
         return it->get();
@@ -265,11 +266,11 @@ void AddBackend(std::unique_ptr<Backend> backend) {
     Impl::Instance().AddBackend(std::move(backend));
 }
 
-void RemoveBackend(const std::string& backend_name) {
+void RemoveBackend(std::string_view backend_name) {
     Impl::Instance().RemoveBackend(backend_name);
 }
 
-Backend* GetBackend(const std::string& backend_name) {
+Backend* GetBackend(std::string_view backend_name) {
     return Impl::Instance().GetBackend(backend_name);
 }
 

src/common/logging/backend.h

@@ -4,10 +4,9 @@
 #pragma once
 
 #include <chrono>
-#include <cstdarg>
 #include <memory>
 #include <string>
-#include <utility>
+#include <string_view>
 #include "common/file_util.h"
 #include "common/logging/filter.h"
 #include "common/logging/log.h"
@@ -106,9 +105,9 @@ private:
 
 void AddBackend(std::unique_ptr<Backend> backend);
 
-void RemoveBackend(const std::string& backend_name);
+void RemoveBackend(std::string_view backend_name);
 
-Backend* GetBackend(const std::string& backend_name);
+Backend* GetBackend(std::string_view backend_name);
 
 /**
  * Returns the name of the passed log class as a C-string. Subclasses are separated by periods

src/common/logging/filter.cpp

@@ -8,39 +8,9 @@
 #include "common/string_util.h"
 
 namespace Log {
-
-Filter::Filter(Level default_level) {
-    ResetAll(default_level);
-}
-
-void Filter::ResetAll(Level level) {
-    class_levels.fill(level);
-}
-
-void Filter::SetClassLevel(Class log_class, Level level) {
-    class_levels[static_cast<size_t>(log_class)] = level;
-}
-
-void Filter::ParseFilterString(const std::string& filter_str) {
-    auto clause_begin = filter_str.cbegin();
-    while (clause_begin != filter_str.cend()) {
-        auto clause_end = std::find(clause_begin, filter_str.cend(), ' ');
-
-        // If clause isn't empty
-        if (clause_end != clause_begin) {
-            ParseFilterRule(clause_begin, clause_end);
-        }
-
-        if (clause_end != filter_str.cend()) {
-            // Skip over the whitespace
-            ++clause_end;
-        }
-        clause_begin = clause_end;
-    }
-}
-
+namespace {
 template <typename It>
-static Level GetLevelByName(const It begin, const It end) {
+Level GetLevelByName(const It begin, const It end) {
     for (u8 i = 0; i < static_cast<u8>(Level::Count); ++i) {
         const char* level_name = GetLevelName(static_cast<Level>(i));
         if (Common::ComparePartialString(begin, end, level_name)) {
@@ -51,7 +21,7 @@ static Level GetLevelByName(const It begin, const It end) {
 }
 
 template <typename It>
-static Class GetClassByName(const It begin, const It end) {
+Class GetClassByName(const It begin, const It end) {
     for (ClassType i = 0; i < static_cast<ClassType>(Class::Count); ++i) {
         const char* level_name = GetLogClassName(static_cast<Class>(i));
         if (Common::ComparePartialString(begin, end, level_name)) {
@@ -61,8 +31,8 @@ static Class GetClassByName(const It begin, const It end) {
     return Class::Count;
 }
 
-bool Filter::ParseFilterRule(const std::string::const_iterator begin,
-                             const std::string::const_iterator end) {
+template <typename Iterator>
+bool ParseFilterRule(Filter& instance, Iterator begin, Iterator end) {
     auto level_separator = std::find(begin, end, ':');
     if (level_separator == end) {
         LOG_ERROR(Log, "Invalid log filter. Must specify a log level after `:`: {}",
@@ -77,7 +47,7 @@ bool Filter::ParseFilterRule(const std::string::const_iterator begin,
     }
 
     if (Common::ComparePartialString(begin, level_separator, "*")) {
-        ResetAll(level);
+        instance.ResetAll(level);
         return true;
     }
 
@@ -87,9 +57,40 @@ bool Filter::ParseFilterRule(const std::string::const_iterator begin,
         return false;
     }
 
-    SetClassLevel(log_class, level);
+    instance.SetClassLevel(log_class, level);
     return true;
 }
+} // Anonymous namespace
+
+Filter::Filter(Level default_level) {
+    ResetAll(default_level);
+}
+
+void Filter::ResetAll(Level level) {
+    class_levels.fill(level);
+}
+
+void Filter::SetClassLevel(Class log_class, Level level) {
+    class_levels[static_cast<size_t>(log_class)] = level;
+}
+
+void Filter::ParseFilterString(std::string_view filter_view) {
+    auto clause_begin = filter_view.cbegin();
+    while (clause_begin != filter_view.cend()) {
+        auto clause_end = std::find(clause_begin, filter_view.cend(), ' ');
+
+        // If clause isn't empty
+        if (clause_end != clause_begin) {
+            ParseFilterRule(*this, clause_begin, clause_end);
+        }
+
+        if (clause_end != filter_view.cend()) {
+            // Skip over the whitespace
+            ++clause_end;
+        }
+        clause_begin = clause_end;
+    }
+}
 
 bool Filter::CheckMessage(Class log_class, Level level) const {
     return static_cast<u8>(level) >= static_cast<u8>(class_levels[static_cast<size_t>(log_class)]);

src/common/logging/filter.h

@@ -6,7 +6,7 @@
 
 #include <array>
 #include <cstddef>
-#include <string>
+#include <string_view>
 #include "common/logging/log.h"
 
 namespace Log {
@@ -40,9 +40,7 @@ public:
      *  - `Service:Info` -- Sets the level of Service to Info.
      *  - `Service.FS:Trace` -- Sets the level of the Service.FS class to Trace.
      */
-    void ParseFilterString(const std::string& filter_str);
-    bool ParseFilterRule(const std::string::const_iterator start,
-                         const std::string::const_iterator end);
+    void ParseFilterString(std::string_view filter_view);
 
     /// Matches class/level combination against the filter, returning true if it passed.
     bool CheckMessage(Class log_class, Level level) const;

src/common/misc.cpp

@@ -4,34 +4,28 @@
 
 #include <cstddef>
 #ifdef _WIN32
-#include <windows.h>
+#include <Windows.h>
 #else
 #include <cerrno>
 #include <cstring>
 #endif
 
-// Neither Android nor OS X support TLS
-#if defined(__APPLE__) || (ANDROID && __clang__)
-#define __thread
-#endif
+#include "common/common_funcs.h"
 
 // Generic function to get last error message.
 // Call directly after the command or use the error num.
 // This function might change the error code.
-const char* GetLastErrorMsg() {
+std::string GetLastErrorMsg() {
     static const size_t buff_size = 255;
+    char err_str[buff_size];
 
 #ifdef _WIN32
-    static __declspec(thread) char err_str[buff_size] = {};
-
     FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
                    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), err_str, buff_size, nullptr);
 #else
-    static __thread char err_str[buff_size] = {};
-
     // Thread safe (XSI-compliant)
     strerror_r(errno, err_str, buff_size);
 #endif
 
-    return err_str;
+    return std::string(err_str, buff_size);
 }

src/common/param_package.cpp

@@ -3,7 +3,9 @@
 // Refer to the license.txt file included.
 
 #include <array>
+#include <utility>
 #include <vector>
+
 #include "common/logging/log.h"
 #include "common/param_package.h"
 #include "common/string_util.h"
@@ -12,10 +14,11 @@ namespace Common {
 
 constexpr char KEY_VALUE_SEPARATOR = ':';
 constexpr char PARAM_SEPARATOR = ',';
+
 constexpr char ESCAPE_CHARACTER = '$';
-const std::string KEY_VALUE_SEPARATOR_ESCAPE{ESCAPE_CHARACTER, '0'};
-const std::string PARAM_SEPARATOR_ESCAPE{ESCAPE_CHARACTER, '1'};
-const std::string ESCAPE_CHARACTER_ESCAPE{ESCAPE_CHARACTER, '2'};
+constexpr char KEY_VALUE_SEPARATOR_ESCAPE[] = "$0";
+constexpr char PARAM_SEPARATOR_ESCAPE[] = "$1";
+constexpr char ESCAPE_CHARACTER_ESCAPE[] = "$2";
 
 ParamPackage::ParamPackage(const std::string& serialized) {
     std::vector<std::string> pairs;
@@ -35,7 +38,7 @@ ParamPackage::ParamPackage(const std::string& serialized) {
             part = Common::ReplaceAll(part, ESCAPE_CHARACTER_ESCAPE, {ESCAPE_CHARACTER});
         }
 
-        Set(key_value[0], key_value[1]);
+        Set(key_value[0], std::move(key_value[1]));
     }
 }
 
@@ -101,16 +104,16 @@ float ParamPackage::Get(const std::string& key, float default_value) const {
     }
 }
 
-void ParamPackage::Set(const std::string& key, const std::string& value) {
-    data[key] = value;
+void ParamPackage::Set(const std::string& key, std::string value) {
+    data.insert_or_assign(key, std::move(value));
 }
 
 void ParamPackage::Set(const std::string& key, int value) {
-    data[key] = std::to_string(value);
+    data.insert_or_assign(key, std::to_string(value));
 }
 
 void ParamPackage::Set(const std::string& key, float value) {
-    data[key] = std::to_string(value);
+    data.insert_or_assign(key, std::to_string(value));
 }
 
 bool ParamPackage::Has(const std::string& key) const {

src/common/param_package.h

@@ -28,7 +28,7 @@ public:
     std::string Get(const std::string& key, const std::string& default_value) const;
     int Get(const std::string& key, int default_value) const;
     float Get(const std::string& key, float default_value) const;
-    void Set(const std::string& key, const std::string& value);
+    void Set(const std::string& key, std::string value);
     void Set(const std::string& key, int value);
     void Set(const std::string& key, float value);
     bool Has(const std::string& key) const;

src/common/string_util.cpp

@@ -34,18 +34,6 @@ std::string ToUpper(std::string str) {
     return str;
 }
 
-// faster than sscanf
-bool AsciiToHex(const char* _szValue, u32& result) {
-    char* endptr = nullptr;
-    const u32 value = strtoul(_szValue, &endptr, 16);
-
-    if (!endptr || *endptr)
-        return false;
-
-    result = value;
-    return true;
-}
-
 // For Debugging. Read out an u8 array.
 std::string ArrayToString(const u8* data, size_t size, int line_len, bool spaces) {
     std::ostringstream oss;
@@ -174,21 +162,21 @@ void SplitString(const std::string& str, const char delim, std::vector<std::stri
     std::istringstream iss(str);
     output.resize(1);
 
-    while (std::getline(iss, *output.rbegin(), delim))
-        output.push_back("");
+    while (std::getline(iss, *output.rbegin(), delim)) {
+        output.emplace_back();
+    }
 
     output.pop_back();
 }
 
-std::string TabsToSpaces(int tab_size, const std::string& in) {
-    const std::string spaces(tab_size, ' ');
-    std::string out(in);
-
+std::string TabsToSpaces(int tab_size, std::string in) {
     size_t i = 0;
-    while (out.npos != (i = out.find('\t')))
-        out.replace(i, 1, spaces);
 
-    return out;
+    while ((i = in.find('\t')) != std::string::npos) {
+        in.replace(i, 1, tab_size, ' ');
+    }
+
+    return in;
 }
 
 std::string ReplaceAll(std::string result, const std::string& src, const std::string& dest) {
@@ -232,31 +220,37 @@ std::u16string UTF8ToUTF16(const std::string& input) {
 }
 
 static std::wstring CPToUTF16(u32 code_page, const std::string& input) {
-    auto const size =
+    const auto size =
         MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), nullptr, 0);
 
-    std::wstring output;
-    output.resize(size);
+    if (size == 0) {
+        return L"";
+    }
 
-    if (size == 0 ||
-        size != MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()),
-                                    &output[0], static_cast<int>(output.size())))
+    std::wstring output(size, L'\0');
+
+    if (size != MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()),
+                                    &output[0], static_cast<int>(output.size()))) {
         output.clear();
+    }
 
     return output;
 }
 
 std::string UTF16ToUTF8(const std::wstring& input) {
-    auto const size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
+    const auto size = WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
                                           nullptr, 0, nullptr, nullptr);
+    if (size == 0) {
+        return "";
+    }
 
-    std::string output;
-    output.resize(size);
+    std::string output(size, '\0');
 
-    if (size == 0 ||
-        size != WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
-                                    &output[0], static_cast<int>(output.size()), nullptr, nullptr))
+    if (size != WideCharToMultiByte(CP_UTF8, 0, input.data(), static_cast<int>(input.size()),
+                                    &output[0], static_cast<int>(output.size()), nullptr,
+                                    nullptr)) {
         output.clear();
+    }
 
     return output;
 }
@@ -277,8 +271,6 @@ std::string CP1252ToUTF8(const std::string& input) {
 
 template <typename T>
 static std::string CodeToUTF8(const char* fromcode, const std::basic_string<T>& input) {
-    std::string result;
-
     iconv_t const conv_desc = iconv_open("UTF-8", fromcode);
     if ((iconv_t)(-1) == conv_desc) {
         LOG_ERROR(Common, "Iconv initialization failure [{}]: {}", fromcode, strerror(errno));
@@ -290,8 +282,7 @@ static std::string CodeToUTF8(const char* fromcode, const std::basic_string<T>&
     // Multiply by 4, which is the max number of bytes to encode a codepoint
     const size_t out_buffer_size = 4 * in_bytes;
 
-    std::string out_buffer;
-    out_buffer.resize(out_buffer_size);
+    std::string out_buffer(out_buffer_size, '\0');
 
     auto src_buffer = &input[0];
     size_t src_bytes = in_bytes;
@@ -316,6 +307,7 @@ static std::string CodeToUTF8(const char* fromcode, const std::basic_string<T>&
         }
     }
 
+    std::string result;
     out_buffer.resize(out_buffer_size - dst_bytes);
     out_buffer.swap(result);
 
@@ -325,8 +317,6 @@ static std::string CodeToUTF8(const char* fromcode, const std::basic_string<T>&
 }
 
 std::u16string UTF8ToUTF16(const std::string& input) {
-    std::u16string result;
-
     iconv_t const conv_desc = iconv_open("UTF-16LE", "UTF-8");
     if ((iconv_t)(-1) == conv_desc) {
         LOG_ERROR(Common, "Iconv initialization failure [UTF-8]: {}", strerror(errno));
@@ -338,8 +328,7 @@ std::u16string UTF8ToUTF16(const std::string& input) {
     // Multiply by 4, which is the max number of bytes to encode a codepoint
     const size_t out_buffer_size = 4 * sizeof(char16_t) * in_bytes;
 
-    std::u16string out_buffer;
-    out_buffer.resize(out_buffer_size);
+    std::u16string out_buffer(out_buffer_size, char16_t{});
 
     char* src_buffer = const_cast<char*>(&input[0]);
     size_t src_bytes = in_bytes;
@@ -364,6 +353,7 @@ std::u16string UTF8ToUTF16(const std::string& input) {
         }
     }
 
+    std::u16string result;
     out_buffer.resize(out_buffer_size - dst_bytes);
     out_buffer.swap(result);
 

src/common/string_util.h

@@ -57,10 +57,7 @@ static bool TryParse(const std::string& str, N* const output) {
         return false;
 }
 
-// TODO: kill this
-bool AsciiToHex(const char* _szValue, u32& result);
-
-std::string TabsToSpaces(int tab_size, const std::string& in);
+std::string TabsToSpaces(int tab_size, std::string in);
 
 void SplitString(const std::string& str, char delim, std::vector<std::string>& output);
 

src/common/swap.h

@@ -167,7 +167,7 @@ inline double swapd(double f) {
 
 template <typename T, typename F>
 struct swap_struct_t {
-    typedef swap_struct_t<T, F> swapped_t;
+    using swapped_t = swap_struct_t;
 
 protected:
     T value = T();
@@ -177,7 +177,7 @@ protected:
     }
 
 public:
-    T const swap() const {
+    T swap() const {
         return swap(value);
     }
     swap_struct_t() = default;
@@ -185,39 +185,39 @@ public:
 
     template <typename S>
     swapped_t& operator=(const S& source) {
-        value = swap((T)source);
+        value = swap(static_cast<T>(source));
         return *this;
     }
 
     operator s8() const {
-        return (s8)swap();
+        return static_cast<s8>(swap());
     }
     operator u8() const {
-        return (u8)swap();
+        return static_cast<u8>(swap());
     }
     operator s16() const {
-        return (s16)swap();
+        return static_cast<s16>(swap());
     }
     operator u16() const {
-        return (u16)swap();
+        return static_cast<u16>(swap());
     }
     operator s32() const {
-        return (s32)swap();
+        return static_cast<s32>(swap());
     }
     operator u32() const {
-        return (u32)swap();
+        return static_cast<u32>(swap());
     }
     operator s64() const {
-        return (s64)swap();
+        return static_cast<s64>(swap());
     }
     operator u64() const {
-        return (u64)swap();
+        return static_cast<u64>(swap());
     }
     operator float() const {
-        return (float)swap();
+        return static_cast<float>(swap());
     }
     operator double() const {
-        return (double)swap();
+        return static_cast<double>(swap());
     }
 
     // +v
@@ -253,7 +253,7 @@ public:
     }
     template <typename S>
     swapped_t operator+(const S& i) const {
-        return swap() + (T)i;
+        return swap() + static_cast<T>(i);
     }
     // v - 5
     swapped_t operator-(const swapped_t& i) const {
@@ -261,7 +261,7 @@ public:
     }
     template <typename S>
     swapped_t operator-(const S& i) const {
-        return swap() - (T)i;
+        return swap() - static_cast<T>(i);
     }
 
     // v += 5
@@ -271,7 +271,7 @@ public:
     }
     template <typename S>
     swapped_t& operator+=(const S& i) {
-        value = swap(swap() + (T)i);
+        value = swap(swap() + static_cast<T>(i));
         return *this;
     }
     // v -= 5
@@ -281,7 +281,7 @@ public:
     }
     template <typename S>
     swapped_t& operator-=(const S& i) {
-        value = swap(swap() - (T)i);
+        value = swap(swap() - static_cast<T>(i));
         return *this;
     }
 
@@ -541,7 +541,7 @@ S operator&(const S& i, const swap_struct_t<T, F> v) {
 
 template <typename S, typename T, typename F>
 S operator&(const swap_struct_t<T, F> v, const S& i) {
-    return (S)(v.swap() & i);
+    return static_cast<S>(v.swap() & i);
 }
 
 // Comparaison
@@ -606,51 +606,51 @@ struct swap_double_t {
 };
 
 #if COMMON_LITTLE_ENDIAN
-typedef u32 u32_le;
-typedef u16 u16_le;
-typedef u64 u64_le;
+using u16_le = u16;
+using u32_le = u32;
+using u64_le = u64;
 
-typedef s32 s32_le;
-typedef s16 s16_le;
-typedef s64 s64_le;
+using s16_le = s16;
+using s32_le = s32;
+using s64_le = s64;
 
-typedef float float_le;
-typedef double double_le;
+using float_le = float;
+using double_le = double;
 
-typedef swap_struct_t<u64, swap_64_t<u64>> u64_be;
-typedef swap_struct_t<s64, swap_64_t<s64>> s64_be;
+using u64_be = swap_struct_t<u64, swap_64_t<u64>>;
+using s64_be = swap_struct_t<s64, swap_64_t<s64>>;
 
-typedef swap_struct_t<u32, swap_32_t<u32>> u32_be;
-typedef swap_struct_t<s32, swap_32_t<s32>> s32_be;
+using u32_be = swap_struct_t<u32, swap_32_t<u32>>;
+using s32_be = swap_struct_t<s32, swap_32_t<s32>>;
 
-typedef swap_struct_t<u16, swap_16_t<u16>> u16_be;
-typedef swap_struct_t<s16, swap_16_t<s16>> s16_be;
+using u16_be = swap_struct_t<u16, swap_16_t<u16>>;
+using s16_be = swap_struct_t<s16, swap_16_t<s16>>;
 
-typedef swap_struct_t<float, swap_float_t<float>> float_be;
-typedef swap_struct_t<double, swap_double_t<double>> double_be;
+using float_be = swap_struct_t<float, swap_float_t<float>>;
+using double_be = swap_struct_t<double, swap_double_t<double>>;
 #else
 
-typedef swap_struct_t<u64, swap_64_t<u64>> u64_le;
-typedef swap_struct_t<s64, swap_64_t<s64>> s64_le;
+using u64_le = swap_struct_t<u64, swap_64_t<u64>>;
+using s64_le = swap_struct_t<s64, swap_64_t<s64>>;
 
-typedef swap_struct_t<u32, swap_32_t<u32>> u32_le;
-typedef swap_struct_t<s32, swap_32_t<s32>> s32_le;
+using u32_le = swap_struct_t<u32, swap_32_t<u32>>;
+using s32_le = swap_struct_t<s32, swap_32_t<s32>>;
 
-typedef swap_struct_t<u16, swap_16_t<u16>> u16_le;
-typedef swap_struct_t<s16, swap_16_t<s16>> s16_le;
+using u16_le = swap_struct_t<u16, swap_16_t<u16>>;
+using s16_le = swap_struct_t<s16, swap_16_t<s16>>;
 
-typedef swap_struct_t<float, swap_float_t<float>> float_le;
-typedef swap_struct_t<double, swap_double_t<double>> double_le;
+using float_le = swap_struct_t<float, swap_float_t<float>>;
+using double_le = swap_struct_t<double, swap_double_t<double>>;
 
-typedef u32 u32_be;
-typedef u16 u16_be;
-typedef u64 u64_be;
+using u16_be = u16;
+using u32_be = u32;
+using u64_be = u64;
 
-typedef s32 s32_be;
-typedef s16 s16_be;
-typedef s64 s64_be;
+using s16_be = s16;
+using s32_be = s32;
+using s64_be = s64;
 
-typedef float float_be;
-typedef double double_be;
+using float_be = float;
+using double_be = double;
 
 #endif

src/common/synchronized_wrapper.h

@@ -1,85 +0,0 @@
-// Copyright 2015 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <algorithm>
-#include <mutex>
-
-namespace Common {
-
-template <typename T>
-class SynchronizedWrapper;
-
-/**
- * Synchronized reference, that keeps a SynchronizedWrapper's mutex locked during its lifetime. This
- * greatly reduces the chance that someone will access the wrapped resource without locking the
- * mutex.
- */
-template <typename T>
-class SynchronizedRef {
-public:
-    SynchronizedRef(SynchronizedWrapper<T>& wrapper) : wrapper(&wrapper) {
-        wrapper.mutex.lock();
-    }
-
-    SynchronizedRef(SynchronizedRef&) = delete;
-    SynchronizedRef(SynchronizedRef&& o) : wrapper(o.wrapper) {
-        o.wrapper = nullptr;
-    }
-
-    ~SynchronizedRef() {
-        if (wrapper)
-            wrapper->mutex.unlock();
-    }
-
-    SynchronizedRef& operator=(SynchronizedRef&) = delete;
-    SynchronizedRef& operator=(SynchronizedRef&& o) {
-        std::swap(wrapper, o.wrapper);
-        return *this;
-    }
-
-    T& operator*() {
-        return wrapper->data;
-    }
-    const T& operator*() const {
-        return wrapper->data;
-    }
-
-    T* operator->() {
-        return &wrapper->data;
-    }
-    const T* operator->() const {
-        return &wrapper->data;
-    }
-
-private:
-    SynchronizedWrapper<T>* wrapper;
-};
-
-/**
- * Wraps an object, only allowing access to it via a locking reference wrapper. Good to ensure no
- * one forgets to lock a mutex before acessing an object. To access the wrapped object construct a
- * SyncronizedRef on this wrapper. Inspired by Rust's Mutex type
- * (http://doc.rust-lang.org/std/sync/struct.Mutex.html).
- */
-template <typename T>
-class SynchronizedWrapper {
-public:
-    template <typename... Args>
-    SynchronizedWrapper(Args&&... args) : data(std::forward<Args>(args)...) {}
-
-    SynchronizedRef<T> Lock() {
-        return {*this};
-    }
-
-private:
-    template <typename U>
-    friend class SynchronizedRef;
-
-    std::mutex mutex;
-    T data;
-};
-
-} // namespace Common

src/core/CMakeLists.txt

@@ -1,5 +1,7 @@
 add_library(core STATIC
     arm/arm_interface.h
+    arm/exclusive_monitor.cpp
+    arm/exclusive_monitor.h
     arm/unicorn/arm_unicorn.cpp
     arm/unicorn/arm_unicorn.h
     core.cpp
@@ -10,6 +12,8 @@ add_library(core STATIC
     core_timing.h
     file_sys/content_archive.cpp
     file_sys/content_archive.h
+    file_sys/control_metadata.cpp
+    file_sys/control_metadata.h
     file_sys/directory.h
     file_sys/errors.h
     file_sys/mode.h
@@ -36,8 +40,6 @@ add_library(core STATIC
     frontend/input.h
     gdbstub/gdbstub.cpp
     gdbstub/gdbstub.h
-    hle/config_mem.cpp
-    hle/config_mem.h
     hle/ipc.h
     hle/ipc_helpers.h
     hle/kernel/address_arbiter.cpp
@@ -247,8 +249,6 @@ add_library(core STATIC
     hle/service/vi/vi_s.h
     hle/service/vi/vi_u.cpp
     hle/service/vi/vi_u.h
-    hle/shared_page.cpp
-    hle/shared_page.h
     hw/hw.cpp
     hw/hw.h
     hw/lcd.cpp

src/core/arm/arm_interface.h

@@ -20,9 +20,6 @@ public:
         u64 cpsr;
         std::array<u128, 32> fpu_registers;
         u64 fpscr;
-
-        // TODO(bunnei): Fix once we have proper support for tpidrro_el0, etc. in the JIT
-        VAddr tls_address;
     };
 
     /// Runs the CPU until an event happens
@@ -104,6 +101,10 @@ public:
 
     virtual void SetTlsAddress(VAddr address) = 0;
 
+    virtual u64 GetTPIDR_EL0() const = 0;
+
+    virtual void SetTPIDR_EL0(u64 value) = 0;
+
     /**
      * Saves the current CPU context
      * @param ctx Thread context to save

src/core/arm/dynarmic/arm_dynarmic.cpp

@@ -102,18 +102,28 @@ public:
     u64 tpidr_el0 = 0;
 };
 
-std::unique_ptr<Dynarmic::A64::Jit> MakeJit(const std::unique_ptr<ARM_Dynarmic_Callbacks>& cb) {
+std::unique_ptr<Dynarmic::A64::Jit> ARM_Dynarmic::MakeJit() {
     const auto page_table = Core::CurrentProcess()->vm_manager.page_table.pointers.data();
 
     Dynarmic::A64::UserConfig config;
+
+    // Callbacks
     config.callbacks = cb.get();
+
+    // Memory
+    config.page_table = reinterpret_cast<void**>(page_table);
+    config.page_table_address_space_bits = Memory::ADDRESS_SPACE_BITS;
+    config.silently_mirror_page_table = false;
+
+    // Multi-process state
+    config.processor_id = core_index;
+    config.global_monitor = &exclusive_monitor->monitor;
+
+    // System registers
     config.tpidrro_el0 = &cb->tpidrro_el0;
     config.tpidr_el0 = &cb->tpidr_el0;
     config.dczid_el0 = 4;
     config.ctr_el0 = 0x8444c004;
-    config.page_table = reinterpret_cast<void**>(page_table);
-    config.page_table_address_space_bits = Memory::ADDRESS_SPACE_BITS;
-    config.silently_mirror_page_table = false;
 
     return std::make_unique<Dynarmic::A64::Jit>(config);
 }
@@ -128,8 +138,11 @@ void ARM_Dynarmic::Step() {
     cb->InterpreterFallback(jit->GetPC(), 1);
 }
 
-ARM_Dynarmic::ARM_Dynarmic()
-    : cb(std::make_unique<ARM_Dynarmic_Callbacks>(*this)), jit(MakeJit(cb)) {
+ARM_Dynarmic::ARM_Dynarmic(std::shared_ptr<ExclusiveMonitor> exclusive_monitor, size_t core_index)
+    : cb(std::make_unique<ARM_Dynarmic_Callbacks>(*this)),
+      jit(MakeJit()), exclusive_monitor{std::dynamic_pointer_cast<DynarmicExclusiveMonitor>(
+                          exclusive_monitor)},
+      core_index{core_index} {
     ARM_Interface::ThreadContext ctx;
     inner_unicorn.SaveContext(ctx);
     LoadContext(ctx);
@@ -196,6 +209,14 @@ void ARM_Dynarmic::SetTlsAddress(u64 address) {
     cb->tpidrro_el0 = address;
 }
 
+u64 ARM_Dynarmic::GetTPIDR_EL0() const {
+    return cb->tpidr_el0;
+}
+
+void ARM_Dynarmic::SetTPIDR_EL0(u64 value) {
+    cb->tpidr_el0 = value;
+}
+
 void ARM_Dynarmic::SaveContext(ARM_Interface::ThreadContext& ctx) {
     ctx.cpu_registers = jit->GetRegisters();
     ctx.sp = jit->GetSP();
@@ -203,7 +224,6 @@ void ARM_Dynarmic::SaveContext(ARM_Interface::ThreadContext& ctx) {
     ctx.cpsr = jit->GetPstate();
     ctx.fpu_registers = jit->GetVectors();
     ctx.fpscr = jit->GetFpcr();
-    ctx.tls_address = cb->tpidrro_el0;
 }
 
 void ARM_Dynarmic::LoadContext(const ARM_Interface::ThreadContext& ctx) {
@@ -213,7 +233,6 @@ void ARM_Dynarmic::LoadContext(const ARM_Interface::ThreadContext& ctx) {
     jit->SetPstate(static_cast<u32>(ctx.cpsr));
     jit->SetVectors(ctx.fpu_registers);
     jit->SetFpcr(static_cast<u32>(ctx.fpscr));
-    cb->tpidrro_el0 = ctx.tls_address;
 }
 
 void ARM_Dynarmic::PrepareReschedule() {
@@ -231,6 +250,45 @@ void ARM_Dynarmic::ClearExclusiveState() {
 }
 
 void ARM_Dynarmic::PageTableChanged() {
-    jit = MakeJit(cb);
+    jit = MakeJit();
     current_page_table = Memory::GetCurrentPageTable();
 }
+
+DynarmicExclusiveMonitor::DynarmicExclusiveMonitor(size_t core_count) : monitor(core_count) {}
+DynarmicExclusiveMonitor::~DynarmicExclusiveMonitor() = default;
+
+void DynarmicExclusiveMonitor::SetExclusive(size_t core_index, VAddr addr) {
+    // Size doesn't actually matter.
+    monitor.Mark(core_index, addr, 16);
+}
+
+void DynarmicExclusiveMonitor::ClearExclusive() {
+    monitor.Clear();
+}
+
+bool DynarmicExclusiveMonitor::ExclusiveWrite8(size_t core_index, VAddr vaddr, u8 value) {
+    return monitor.DoExclusiveOperation(core_index, vaddr, 1,
+                                        [&] { Memory::Write8(vaddr, value); });
+}
+
+bool DynarmicExclusiveMonitor::ExclusiveWrite16(size_t core_index, VAddr vaddr, u16 value) {
+    return monitor.DoExclusiveOperation(core_index, vaddr, 2,
+                                        [&] { Memory::Write16(vaddr, value); });
+}
+
+bool DynarmicExclusiveMonitor::ExclusiveWrite32(size_t core_index, VAddr vaddr, u32 value) {
+    return monitor.DoExclusiveOperation(core_index, vaddr, 4,
+                                        [&] { Memory::Write32(vaddr, value); });
+}
+
+bool DynarmicExclusiveMonitor::ExclusiveWrite64(size_t core_index, VAddr vaddr, u64 value) {
+    return monitor.DoExclusiveOperation(core_index, vaddr, 8,
+                                        [&] { Memory::Write64(vaddr, value); });
+}
+
+bool DynarmicExclusiveMonitor::ExclusiveWrite128(size_t core_index, VAddr vaddr, u128 value) {
+    return monitor.DoExclusiveOperation(core_index, vaddr, 16, [&] {
+        Memory::Write64(vaddr, value[0]);
+        Memory::Write64(vaddr, value[1]);
+    });
+}

src/core/arm/dynarmic/arm_dynarmic.h

@@ -6,15 +6,18 @@
 
 #include <memory>
 #include <dynarmic/A64/a64.h>
+#include <dynarmic/A64/exclusive_monitor.h>
 #include "common/common_types.h"
 #include "core/arm/arm_interface.h"
+#include "core/arm/exclusive_monitor.h"
 #include "core/arm/unicorn/arm_unicorn.h"
 
 class ARM_Dynarmic_Callbacks;
+class DynarmicExclusiveMonitor;
 
 class ARM_Dynarmic final : public ARM_Interface {
 public:
-    ARM_Dynarmic();
+    ARM_Dynarmic(std::shared_ptr<ExclusiveMonitor> exclusive_monitor, size_t core_index);
     ~ARM_Dynarmic();
 
     void MapBackingMemory(VAddr address, size_t size, u8* memory,
@@ -34,6 +37,8 @@ public:
     void SetCPSR(u32 cpsr) override;
     VAddr GetTlsAddress() const override;
     void SetTlsAddress(VAddr address) override;
+    void SetTPIDR_EL0(u64 value) override;
+    u64 GetTPIDR_EL0() const override;
 
     void SaveContext(ThreadContext& ctx) override;
     void LoadContext(const ThreadContext& ctx) override;
@@ -45,10 +50,34 @@ public:
     void PageTableChanged() override;
 
 private:
+    std::unique_ptr<Dynarmic::A64::Jit> MakeJit();
+
     friend class ARM_Dynarmic_Callbacks;
     std::unique_ptr<ARM_Dynarmic_Callbacks> cb;
     std::unique_ptr<Dynarmic::A64::Jit> jit;
     ARM_Unicorn inner_unicorn;
 
+    size_t core_index;
+    std::shared_ptr<DynarmicExclusiveMonitor> exclusive_monitor;
+
     Memory::PageTable* current_page_table = nullptr;
 };
+
+class DynarmicExclusiveMonitor final : public ExclusiveMonitor {
+public:
+    explicit DynarmicExclusiveMonitor(size_t core_count);
+    ~DynarmicExclusiveMonitor();
+
+    void SetExclusive(size_t core_index, VAddr addr) override;
+    void ClearExclusive() override;
+
+    bool ExclusiveWrite8(size_t core_index, VAddr vaddr, u8 value) override;
+    bool ExclusiveWrite16(size_t core_index, VAddr vaddr, u16 value) override;
+    bool ExclusiveWrite32(size_t core_index, VAddr vaddr, u32 value) override;
+    bool ExclusiveWrite64(size_t core_index, VAddr vaddr, u64 value) override;
+    bool ExclusiveWrite128(size_t core_index, VAddr vaddr, u128 value) override;
+
+private:
+    friend class ARM_Dynarmic;
+    Dynarmic::A64::ExclusiveMonitor monitor;
+};

src/core/arm/exclusive_monitor.cpp

@@ -0,0 +1,7 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/arm/exclusive_monitor.h"
+
+ExclusiveMonitor::~ExclusiveMonitor() = default;

src/core/arm/exclusive_monitor.h

@@ -0,0 +1,21 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+
+class ExclusiveMonitor {
+public:
+    virtual ~ExclusiveMonitor();
+
+    virtual void SetExclusive(size_t core_index, VAddr addr) = 0;
+    virtual void ClearExclusive() = 0;
+
+    virtual bool ExclusiveWrite8(size_t core_index, VAddr vaddr, u8 value) = 0;
+    virtual bool ExclusiveWrite16(size_t core_index, VAddr vaddr, u16 value) = 0;
+    virtual bool ExclusiveWrite32(size_t core_index, VAddr vaddr, u32 value) = 0;
+    virtual bool ExclusiveWrite64(size_t core_index, VAddr vaddr, u64 value) = 0;
+    virtual bool ExclusiveWrite128(size_t core_index, VAddr vaddr, u128 value) = 0;
+};

src/core/arm/unicorn/arm_unicorn.cpp

@@ -169,6 +169,16 @@ void ARM_Unicorn::SetTlsAddress(VAddr base) {
     CHECKED(uc_reg_write(uc, UC_ARM64_REG_TPIDRRO_EL0, &base));
 }
 
+u64 ARM_Unicorn::GetTPIDR_EL0() const {
+    u64 value{};
+    CHECKED(uc_reg_read(uc, UC_ARM64_REG_TPIDR_EL0, &value));
+    return value;
+}
+
+void ARM_Unicorn::SetTPIDR_EL0(u64 value) {
+    CHECKED(uc_reg_write(uc, UC_ARM64_REG_TPIDR_EL0, &value));
+}
+
 void ARM_Unicorn::Run() {
     if (GDBStub::IsServerEnabled()) {
         ExecuteInstructions(std::max(4000000, 0));
@@ -220,8 +230,6 @@ void ARM_Unicorn::SaveContext(ARM_Interface::ThreadContext& ctx) {
 
     CHECKED(uc_reg_read_batch(uc, uregs, tregs, 31));
 
-    ctx.tls_address = GetTlsAddress();
-
     for (int i = 0; i < 32; ++i) {
         uregs[i] = UC_ARM64_REG_Q0 + i;
         tregs[i] = &ctx.fpu_registers[i];
@@ -249,8 +257,6 @@ void ARM_Unicorn::LoadContext(const ARM_Interface::ThreadContext& ctx) {
 
     CHECKED(uc_reg_write_batch(uc, uregs, tregs, 31));
 
-    SetTlsAddress(ctx.tls_address);
-
     for (auto i = 0; i < 32; ++i) {
         uregs[i] = UC_ARM64_REG_Q0 + i;
         tregs[i] = (void*)&ctx.fpu_registers[i];

src/core/arm/unicorn/arm_unicorn.h

@@ -28,6 +28,8 @@ public:
     void SetCPSR(u32 cpsr) override;
     VAddr GetTlsAddress() const override;
     void SetTlsAddress(VAddr address) override;
+    void SetTPIDR_EL0(u64 value) override;
+    u64 GetTPIDR_EL0() const override;
     void SaveContext(ThreadContext& ctx) override;
     void LoadContext(const ThreadContext& ctx) override;
     void PrepareReschedule() override;

src/core/core.cpp

@@ -171,8 +171,9 @@ System::ResultStatus System::Init(EmuWindow* emu_window, u32 system_mode) {
     current_process = Kernel::Process::Create("main");
 
     cpu_barrier = std::make_shared<CpuBarrier>();
+    cpu_exclusive_monitor = Cpu::MakeExclusiveMonitor(cpu_cores.size());
     for (size_t index = 0; index < cpu_cores.size(); ++index) {
-        cpu_cores[index] = std::make_shared<Cpu>(cpu_barrier, index);
+        cpu_cores[index] = std::make_shared<Cpu>(cpu_exclusive_monitor, cpu_barrier, index);
     }
 
     gpu_core = std::make_unique<Tegra::GPU>();

src/core/core.h

@@ -9,6 +9,7 @@
 #include <string>
 #include <thread>
 #include "common/common_types.h"
+#include "core/arm/exclusive_monitor.h"
 #include "core/core_cpu.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/scheduler.h"
@@ -114,6 +115,11 @@ public:
         return CurrentCpuCore().ArmInterface();
     }
 
+    /// Gets the index of the currently running CPU core
+    size_t CurrentCoreIndex() {
+        return CurrentCpuCore().CoreIndex();
+    }
+
     /// Gets an ARM interface to the CPU core with the specified index
     ARM_Interface& ArmInterface(size_t core_index);
 
@@ -130,6 +136,11 @@ public:
         return *CurrentCpuCore().Scheduler();
     }
 
+    /// Gets the exclusive monitor
+    ExclusiveMonitor& Monitor() {
+        return *cpu_exclusive_monitor;
+    }
+
     /// Gets the scheduler for the CPU core with the specified index
     const std::shared_ptr<Kernel::Scheduler>& Scheduler(size_t core_index);
 
@@ -186,6 +197,7 @@ private:
     std::unique_ptr<Tegra::GPU> gpu_core;
     std::shared_ptr<Tegra::DebugContext> debug_context;
     Kernel::SharedPtr<Kernel::Process> current_process;
+    std::shared_ptr<ExclusiveMonitor> cpu_exclusive_monitor;
     std::shared_ptr<CpuBarrier> cpu_barrier;
     std::array<std::shared_ptr<Cpu>, NUM_CPU_CORES> cpu_cores;
     std::array<std::unique_ptr<std::thread>, NUM_CPU_CORES - 1> cpu_core_threads;

src/core/core_cpu.cpp

@@ -48,14 +48,15 @@ bool CpuBarrier::Rendezvous() {
     return false;
 }
 
-Cpu::Cpu(std::shared_ptr<CpuBarrier> cpu_barrier, size_t core_index)
+Cpu::Cpu(std::shared_ptr<ExclusiveMonitor> exclusive_monitor,
+         std::shared_ptr<CpuBarrier> cpu_barrier, size_t core_index)
     : cpu_barrier{std::move(cpu_barrier)}, core_index{core_index} {
 
     if (Settings::values.use_cpu_jit) {
 #ifdef ARCHITECTURE_x86_64
-        arm_interface = std::make_shared<ARM_Dynarmic>();
+        arm_interface = std::make_shared<ARM_Dynarmic>(exclusive_monitor, core_index);
 #else
-        cpu_core = std::make_shared<ARM_Unicorn>();
+        arm_interface = std::make_shared<ARM_Unicorn>();
         LOG_WARNING(Core, "CPU JIT requested, but Dynarmic not available");
 #endif
     } else {
@@ -65,6 +66,18 @@ Cpu::Cpu(std::shared_ptr<CpuBarrier> cpu_barrier, size_t core_index)
     scheduler = std::make_shared<Kernel::Scheduler>(arm_interface.get());
 }
 
+std::shared_ptr<ExclusiveMonitor> Cpu::MakeExclusiveMonitor(size_t num_cores) {
+    if (Settings::values.use_cpu_jit) {
+#ifdef ARCHITECTURE_x86_64
+        return std::make_shared<DynarmicExclusiveMonitor>(num_cores);
+#else
+        return nullptr; // TODO(merry): Passthrough exclusive monitor
+#endif
+    } else {
+        return nullptr; // TODO(merry): Passthrough exclusive monitor
+    }
+}
+
 void Cpu::RunLoop(bool tight_loop) {
     // Wait for all other CPU cores to complete the previous slice, such that they run in lock-step
     if (!cpu_barrier->Rendezvous()) {

src/core/core_cpu.h

@@ -10,6 +10,7 @@
 #include <mutex>
 #include <string>
 #include "common/common_types.h"
+#include "core/arm/exclusive_monitor.h"
 
 class ARM_Interface;
 
@@ -40,7 +41,8 @@ private:
 
 class Cpu {
 public:
-    Cpu(std::shared_ptr<CpuBarrier> cpu_barrier, size_t core_index);
+    Cpu(std::shared_ptr<ExclusiveMonitor> exclusive_monitor,
+        std::shared_ptr<CpuBarrier> cpu_barrier, size_t core_index);
 
     void RunLoop(bool tight_loop = true);
 
@@ -64,6 +66,12 @@ public:
         return core_index == 0;
     }
 
+    size_t CoreIndex() const {
+        return core_index;
+    }
+
+    static std::shared_ptr<ExclusiveMonitor> MakeExclusiveMonitor(size_t num_cores);
+
 private:
     void Reschedule();
 

src/core/file_sys/content_archive.cpp

@@ -2,6 +2,9 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
+#include <utility>
+
 #include "common/logging/log.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/vfs_offset.h"
@@ -61,7 +64,7 @@ struct RomFSSuperblock {
 };
 static_assert(sizeof(RomFSSuperblock) == 0xE8, "RomFSSuperblock has incorrect size.");
 
-NCA::NCA(VirtualFile file_) : file(file_) {
+NCA::NCA(VirtualFile file_) : file(std::move(file_)) {
     if (sizeof(NCAHeader) != file->ReadObject(&header))
         LOG_CRITICAL(Loader, "File reader errored out during header read.");
 

src/core/file_sys/content_archive.h

@@ -4,6 +4,11 @@
 
 #pragma once
 
+#include <array>
+#include <memory>
+#include <string>
+#include <vector>
+
 #include "common/common_funcs.h"
 #include "common/common_types.h"
 #include "common/swap.h"
@@ -48,7 +53,7 @@ struct NCAHeader {
 };
 static_assert(sizeof(NCAHeader) == 0x400, "NCAHeader has incorrect size.");
 
-inline bool IsDirectoryExeFS(std::shared_ptr<FileSys::VfsDirectory> pfs) {
+inline bool IsDirectoryExeFS(const std::shared_ptr<VfsDirectory>& pfs) {
     // According to switchbrew, an exefs must only contain these two files:
     return pfs->GetFile("main") != nullptr && pfs->GetFile("main.npdm") != nullptr;
 }

src/core/file_sys/control_metadata.cpp

@@ -0,0 +1,42 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/string_util.h"
+#include "common/swap.h"
+#include "core/file_sys/control_metadata.h"
+
+namespace FileSys {
+
+std::string LanguageEntry::GetApplicationName() const {
+    return Common::StringFromFixedZeroTerminatedBuffer(application_name.data(), 0x200);
+}
+
+std::string LanguageEntry::GetDeveloperName() const {
+    return Common::StringFromFixedZeroTerminatedBuffer(developer_name.data(), 0x100);
+}
+
+NACP::NACP(VirtualFile file_) : file(std::move(file_)), raw(std::make_unique<RawNACP>()) {
+    file->ReadObject(raw.get());
+}
+
+const LanguageEntry& NACP::GetLanguageEntry(Language language) const {
+    return raw->language_entries.at(static_cast<u8>(language));
+}
+
+std::string NACP::GetApplicationName(Language language) const {
+    return GetLanguageEntry(language).GetApplicationName();
+}
+
+std::string NACP::GetDeveloperName(Language language) const {
+    return GetLanguageEntry(language).GetDeveloperName();
+}
+
+u64 NACP::GetTitleId() const {
+    return raw->title_id;
+}
+
+std::string NACP::GetVersionString() const {
+    return Common::StringFromFixedZeroTerminatedBuffer(raw->version_string.data(), 0x10);
+}
+} // namespace FileSys

src/core/file_sys/control_metadata.h

@@ -0,0 +1,81 @@
+// Copyright 2018 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <memory>
+#include <string>
+#include "common/common_funcs.h"
+#include "core/file_sys/vfs.h"
+
+namespace FileSys {
+
+// A localized entry containing strings within the NACP.
+// One for each language of type Language.
+struct LanguageEntry {
+    std::array<char, 0x200> application_name;
+    std::array<char, 0x100> developer_name;
+
+    std::string GetApplicationName() const;
+    std::string GetDeveloperName() const;
+};
+static_assert(sizeof(LanguageEntry) == 0x300, "LanguageEntry has incorrect size.");
+
+// The raw file format of a NACP file.
+struct RawNACP {
+    std::array<LanguageEntry, 16> language_entries;
+    INSERT_PADDING_BYTES(0x38);
+    u64_le title_id;
+    INSERT_PADDING_BYTES(0x20);
+    std::array<char, 0x10> version_string;
+    u64_le dlc_base_title_id;
+    u64_le title_id_2;
+    INSERT_PADDING_BYTES(0x28);
+    u64_le product_code;
+    u64_le title_id_3;
+    std::array<u64_le, 0x7> title_id_array;
+    INSERT_PADDING_BYTES(0x8);
+    u64_le title_id_update;
+    std::array<u8, 0x40> bcat_passphrase;
+    INSERT_PADDING_BYTES(0xEC0);
+};
+static_assert(sizeof(RawNACP) == 0x4000, "RawNACP has incorrect size.");
+
+// A language on the NX. These are for names and icons.
+enum class Language : u8 {
+    AmericanEnglish = 0,
+    BritishEnglish = 1,
+    Japanese = 2,
+    French = 3,
+    German = 4,
+    LatinAmericanSpanish = 5,
+    Spanish = 6,
+    Italian = 7,
+    Dutch = 8,
+    CanadianFrench = 9,
+    Portugese = 10,
+    Russian = 11,
+    Korean = 12,
+    Taiwanese = 13,
+    Chinese = 14,
+};
+
+// A class representing the format used by NX metadata files, typically named Control.nacp.
+// These store application name, dev name, title id, and other miscellaneous data.
+class NACP {
+public:
+    explicit NACP(VirtualFile file);
+    const LanguageEntry& GetLanguageEntry(Language language = Language::AmericanEnglish) const;
+    std::string GetApplicationName(Language language = Language::AmericanEnglish) const;
+    std::string GetDeveloperName(Language language = Language::AmericanEnglish) const;
+    u64 GetTitleId() const;
+    std::string GetVersionString() const;
+
+private:
+    VirtualFile file;
+    std::unique_ptr<RawNACP> raw;
+};
+
+} // namespace FileSys

src/core/file_sys/errors.h

@@ -20,13 +20,13 @@ enum {
 constexpr ResultCode ERROR_PATH_NOT_FOUND(ErrorModule::FS, ErrCodes::NotFound);
 
 // TODO(bunnei): Replace these with correct errors for Switch OS
-constexpr ResultCode ERROR_INVALID_PATH(ResultCode(-1));
-constexpr ResultCode ERROR_UNSUPPORTED_OPEN_FLAGS(ResultCode(-1));
-constexpr ResultCode ERROR_INVALID_OPEN_FLAGS(ResultCode(-1));
-constexpr ResultCode ERROR_FILE_NOT_FOUND(ResultCode(-1));
-constexpr ResultCode ERROR_UNEXPECTED_FILE_OR_DIRECTORY(ResultCode(-1));
-constexpr ResultCode ERROR_DIRECTORY_ALREADY_EXISTS(ResultCode(-1));
-constexpr ResultCode ERROR_FILE_ALREADY_EXISTS(ResultCode(-1));
-constexpr ResultCode ERROR_DIRECTORY_NOT_EMPTY(ResultCode(-1));
+constexpr ResultCode ERROR_INVALID_PATH(-1);
+constexpr ResultCode ERROR_UNSUPPORTED_OPEN_FLAGS(-1);
+constexpr ResultCode ERROR_INVALID_OPEN_FLAGS(-1);
+constexpr ResultCode ERROR_FILE_NOT_FOUND(-1);
+constexpr ResultCode ERROR_UNEXPECTED_FILE_OR_DIRECTORY(-1);
+constexpr ResultCode ERROR_DIRECTORY_ALREADY_EXISTS(-1);
+constexpr ResultCode ERROR_FILE_ALREADY_EXISTS(-1);
+constexpr ResultCode ERROR_DIRECTORY_NOT_EMPTY(-1);
 
 } // namespace FileSys

src/core/file_sys/mode.h

@@ -11,7 +11,13 @@ namespace FileSys {
 enum class Mode : u32 {
     Read = 1,
     Write = 2,
+    ReadWrite = 3,
     Append = 4,
+    WriteAppend = 6,
 };
 
+inline u32 operator&(Mode lhs, Mode rhs) {
+    return static_cast<u32>(lhs) & static_cast<u32>(rhs);
+}
+
 } // namespace FileSys

src/core/file_sys/partition_filesystem.cpp

@@ -2,7 +2,12 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
+#include <cstddef>
+#include <cstring>
+#include <iterator>
 #include <utility>
+
 #include "common/file_util.h"
 #include "common/logging/log.h"
 #include "core/file_sys/partition_filesystem.h"
@@ -11,6 +16,11 @@
 
 namespace FileSys {
 
+bool PartitionFilesystem::Header::HasValidMagicValue() const {
+    return magic == Common::MakeMagic('H', 'F', 'S', '0') ||
+           magic == Common::MakeMagic('P', 'F', 'S', '0');
+}
+
 PartitionFilesystem::PartitionFilesystem(std::shared_ptr<VfsFile> file) {
     // At least be as large as the header
     if (file->GetSize() < sizeof(Header)) {
@@ -20,19 +30,17 @@ PartitionFilesystem::PartitionFilesystem(std::shared_ptr<VfsFile> file) {
 
     // For cartridges, HFSs can get very large, so we need to calculate the size up to
     // the actual content itself instead of just blindly reading in the entire file.
-    Header pfs_header;
     if (sizeof(Header) != file->ReadObject(&pfs_header)) {
         status = Loader::ResultStatus::Error;
         return;
     }
 
-    if (pfs_header.magic != Common::MakeMagic('H', 'F', 'S', '0') &&
-        pfs_header.magic != Common::MakeMagic('P', 'F', 'S', '0')) {
+    if (!pfs_header.HasValidMagicValue()) {
         status = Loader::ResultStatus::ErrorInvalidFormat;
         return;
     }
 
-    bool is_hfs = pfs_header.magic == Common::MakeMagic('H', 'F', 'S', '0');
+    is_hfs = pfs_header.magic == Common::MakeMagic('H', 'F', 'S', '0');
 
     size_t entry_size = is_hfs ? sizeof(HFSEntry) : sizeof(PFSEntry);
     size_t metadata_size =
@@ -40,27 +48,13 @@ PartitionFilesystem::PartitionFilesystem(std::shared_ptr<VfsFile> file) {
 
     // Actually read in now...
     std::vector<u8> file_data = file->ReadBytes(metadata_size);
+    const size_t total_size = file_data.size();
 
-    if (file_data.size() != metadata_size) {
+    if (total_size != metadata_size) {
         status = Loader::ResultStatus::Error;
         return;
     }
 
-    size_t total_size = file_data.size();
-    if (total_size < sizeof(Header)) {
-        status = Loader::ResultStatus::Error;
-        return;
-    }
-
-    memcpy(&pfs_header, file_data.data(), sizeof(Header));
-    if (pfs_header.magic != Common::MakeMagic('H', 'F', 'S', '0') &&
-        pfs_header.magic != Common::MakeMagic('P', 'F', 'S', '0')) {
-        status = Loader::ResultStatus::ErrorInvalidFormat;
-        return;
-    }
-
-    is_hfs = pfs_header.magic == Common::MakeMagic('H', 'F', 'S', '0');
-
     size_t entries_offset = sizeof(Header);
     size_t strtab_offset = entries_offset + (pfs_header.num_entries * entry_size);
     content_offset = strtab_offset + pfs_header.strtab_size;
@@ -87,7 +81,7 @@ std::vector<std::shared_ptr<VfsFile>> PartitionFilesystem::GetFiles() const {
 }
 
 std::vector<std::shared_ptr<VfsDirectory>> PartitionFilesystem::GetSubdirectories() const {
-    return {};
+    return pfs_dirs;
 }
 
 std::string PartitionFilesystem::GetName() const {
@@ -110,14 +104,15 @@ void PartitionFilesystem::PrintDebugInfo() const {
 }
 
 bool PartitionFilesystem::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
-    auto iter = std::find(pfs_files.begin(), pfs_files.end(), file);
+    const auto iter = std::find(pfs_files.begin(), pfs_files.end(), file);
     if (iter == pfs_files.end())
         return false;
 
-    pfs_files[iter - pfs_files.begin()] = pfs_files.back();
+    const std::ptrdiff_t offset = std::distance(pfs_files.begin(), iter);
+    pfs_files[offset] = pfs_files.back();
     pfs_files.pop_back();
 
-    pfs_dirs.emplace_back(dir);
+    pfs_dirs.emplace_back(std::move(dir));
 
     return true;
 }

src/core/file_sys/partition_filesystem.h

@@ -42,6 +42,8 @@ private:
         u32_le num_entries;
         u32_le strtab_size;
         INSERT_PADDING_BYTES(0x4);
+
+        bool HasValidMagicValue() const;
     };
 
     static_assert(sizeof(Header) == 0x10, "PFS/HFS header structure size is wrong");
@@ -73,11 +75,11 @@ private:
 
 #pragma pack(pop)
 
-    Loader::ResultStatus status;
+    Loader::ResultStatus status{};
 
-    Header pfs_header;
-    bool is_hfs;
-    size_t content_offset;
+    Header pfs_header{};
+    bool is_hfs = false;
+    size_t content_offset = 0;
 
     std::vector<VirtualFile> pfs_files;
     std::vector<VirtualDir> pfs_dirs;

src/core/file_sys/savedata_factory.cpp

@@ -11,7 +11,7 @@
 
 namespace FileSys {
 
-std::string SaveDataDescriptor::DebugInfo() {
+std::string SaveDataDescriptor::DebugInfo() const {
     return fmt::format("[type={:02X}, title_id={:016X}, user_id={:016X}{:016X}, save_id={:016X}]",
                        static_cast<u8>(type), title_id, user_id[1], user_id[0], save_id);
 }

src/core/file_sys/savedata_factory.h

@@ -37,7 +37,7 @@ struct SaveDataDescriptor {
     u64_le zero_2;
     u64_le zero_3;
 
-    std::string DebugInfo();
+    std::string DebugInfo() const;
 };
 static_assert(sizeof(SaveDataDescriptor) == 0x40, "SaveDataDescriptor has incorrect size.");
 

src/core/file_sys/vfs.cpp

@@ -13,7 +13,7 @@ namespace FileSys {
 VfsFile::~VfsFile() = default;
 
 std::string VfsFile::GetExtension() const {
-    return FileUtil::GetExtensionFromFilename(GetName());
+    return std::string(FileUtil::GetExtensionFromFilename(GetName()));
 }
 
 VfsDirectory::~VfsDirectory() = default;
@@ -42,68 +42,84 @@ bool VfsFile::WriteByte(u8 data, size_t offset) {
     return Write(&data, 1, offset) == 1;
 }
 
-size_t VfsFile::WriteBytes(std::vector<u8> data, size_t offset) {
+size_t VfsFile::WriteBytes(const std::vector<u8>& data, size_t offset) {
     return Write(data.data(), data.size(), offset);
 }
 
-std::shared_ptr<VfsFile> VfsDirectory::GetFileRelative(const std::string& path) const {
+std::shared_ptr<VfsFile> VfsDirectory::GetFileRelative(std::string_view path) const {
     auto vec = FileUtil::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
-    if (vec.empty())
+    if (vec.empty()) {
         return nullptr;
-    if (vec.size() == 1)
+    }
+
+    if (vec.size() == 1) {
         return GetFile(vec[0]);
+    }
+
     auto dir = GetSubdirectory(vec[0]);
     for (size_t component = 1; component < vec.size() - 1; ++component) {
-        if (dir == nullptr)
+        if (dir == nullptr) {
             return nullptr;
+        }
+
         dir = dir->GetSubdirectory(vec[component]);
     }
-    if (dir == nullptr)
+
+    if (dir == nullptr) {
         return nullptr;
+    }
+
     return dir->GetFile(vec.back());
 }
 
-std::shared_ptr<VfsFile> VfsDirectory::GetFileAbsolute(const std::string& path) const {
-    if (IsRoot())
+std::shared_ptr<VfsFile> VfsDirectory::GetFileAbsolute(std::string_view path) const {
+    if (IsRoot()) {
         return GetFileRelative(path);
+    }
 
     return GetParentDirectory()->GetFileAbsolute(path);
 }
 
-std::shared_ptr<VfsDirectory> VfsDirectory::GetDirectoryRelative(const std::string& path) const {
+std::shared_ptr<VfsDirectory> VfsDirectory::GetDirectoryRelative(std::string_view path) const {
     auto vec = FileUtil::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
-    if (vec.empty())
+    if (vec.empty()) {
         // TODO(DarkLordZach): Return this directory if path is '/' or similar. Can't currently
         // because of const-ness
         return nullptr;
+    }
+
     auto dir = GetSubdirectory(vec[0]);
     for (size_t component = 1; component < vec.size(); ++component) {
-        if (dir == nullptr)
+        if (dir == nullptr) {
             return nullptr;
+        }
+
         dir = dir->GetSubdirectory(vec[component]);
     }
+
     return dir;
 }
 
-std::shared_ptr<VfsDirectory> VfsDirectory::GetDirectoryAbsolute(const std::string& path) const {
-    if (IsRoot())
+std::shared_ptr<VfsDirectory> VfsDirectory::GetDirectoryAbsolute(std::string_view path) const {
+    if (IsRoot()) {
         return GetDirectoryRelative(path);
+    }
 
     return GetParentDirectory()->GetDirectoryAbsolute(path);
 }
 
-std::shared_ptr<VfsFile> VfsDirectory::GetFile(const std::string& name) const {
+std::shared_ptr<VfsFile> VfsDirectory::GetFile(std::string_view name) const {
     const auto& files = GetFiles();
     const auto iter = std::find_if(files.begin(), files.end(),
                                    [&name](const auto& file1) { return name == file1->GetName(); });
     return iter == files.end() ? nullptr : *iter;
 }
 
-std::shared_ptr<VfsDirectory> VfsDirectory::GetSubdirectory(const std::string& name) const {
+std::shared_ptr<VfsDirectory> VfsDirectory::GetSubdirectory(std::string_view name) const {
     const auto& subs = GetSubdirectories();
     const auto iter = std::find_if(subs.begin(), subs.end(),
                                    [&name](const auto& file1) { return name == file1->GetName(); });
@@ -128,77 +144,96 @@ size_t VfsDirectory::GetSize() const {
     return file_total + subdir_total;
 }
 
-std::shared_ptr<VfsFile> VfsDirectory::CreateFileRelative(const std::string& path) {
+std::shared_ptr<VfsFile> VfsDirectory::CreateFileRelative(std::string_view path) {
     auto vec = FileUtil::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
-    if (vec.empty())
+    if (vec.empty()) {
         return nullptr;
-    if (vec.size() == 1)
+    }
+
+    if (vec.size() == 1) {
         return CreateFile(vec[0]);
+    }
+
     auto dir = GetSubdirectory(vec[0]);
     if (dir == nullptr) {
         dir = CreateSubdirectory(vec[0]);
-        if (dir == nullptr)
+        if (dir == nullptr) {
             return nullptr;
+        }
     }
 
     return dir->CreateFileRelative(FileUtil::GetPathWithoutTop(path));
 }
 
-std::shared_ptr<VfsFile> VfsDirectory::CreateFileAbsolute(const std::string& path) {
-    if (IsRoot())
+std::shared_ptr<VfsFile> VfsDirectory::CreateFileAbsolute(std::string_view path) {
+    if (IsRoot()) {
         return CreateFileRelative(path);
+    }
+
     return GetParentDirectory()->CreateFileAbsolute(path);
 }
 
-std::shared_ptr<VfsDirectory> VfsDirectory::CreateDirectoryRelative(const std::string& path) {
+std::shared_ptr<VfsDirectory> VfsDirectory::CreateDirectoryRelative(std::string_view path) {
     auto vec = FileUtil::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
-    if (vec.empty())
+    if (vec.empty()) {
         return nullptr;
-    if (vec.size() == 1)
+    }
+
+    if (vec.size() == 1) {
         return CreateSubdirectory(vec[0]);
+    }
+
     auto dir = GetSubdirectory(vec[0]);
     if (dir == nullptr) {
         dir = CreateSubdirectory(vec[0]);
-        if (dir == nullptr)
+        if (dir == nullptr) {
             return nullptr;
+        }
     }
+
     return dir->CreateDirectoryRelative(FileUtil::GetPathWithoutTop(path));
 }
 
-std::shared_ptr<VfsDirectory> VfsDirectory::CreateDirectoryAbsolute(const std::string& path) {
-    if (IsRoot())
+std::shared_ptr<VfsDirectory> VfsDirectory::CreateDirectoryAbsolute(std::string_view path) {
+    if (IsRoot()) {
         return CreateDirectoryRelative(path);
+    }
+
     return GetParentDirectory()->CreateDirectoryAbsolute(path);
 }
 
-bool VfsDirectory::DeleteSubdirectoryRecursive(const std::string& name) {
+bool VfsDirectory::DeleteSubdirectoryRecursive(std::string_view name) {
     auto dir = GetSubdirectory(name);
-    if (dir == nullptr)
+    if (dir == nullptr) {
         return false;
+    }
 
     bool success = true;
     for (const auto& file : dir->GetFiles()) {
-        if (!DeleteFile(file->GetName()))
+        if (!DeleteFile(file->GetName())) {
             success = false;
+        }
     }
 
     for (const auto& sdir : dir->GetSubdirectories()) {
-        if (!dir->DeleteSubdirectoryRecursive(sdir->GetName()))
+        if (!dir->DeleteSubdirectoryRecursive(sdir->GetName())) {
             success = false;
+        }
     }
 
     return success;
 }
 
-bool VfsDirectory::Copy(const std::string& src, const std::string& dest) {
+bool VfsDirectory::Copy(std::string_view src, std::string_view dest) {
     const auto f1 = GetFile(src);
     auto f2 = CreateFile(dest);
-    if (f1 == nullptr || f2 == nullptr)
+    if (f1 == nullptr || f2 == nullptr) {
         return false;
+    }
 
     if (!f2->Resize(f1->GetSize())) {
         DeleteFile(dest);
@@ -216,23 +251,23 @@ bool ReadOnlyVfsDirectory::IsReadable() const {
     return true;
 }
 
-std::shared_ptr<VfsDirectory> ReadOnlyVfsDirectory::CreateSubdirectory(const std::string& name) {
+std::shared_ptr<VfsDirectory> ReadOnlyVfsDirectory::CreateSubdirectory(std::string_view name) {
     return nullptr;
 }
 
-std::shared_ptr<VfsFile> ReadOnlyVfsDirectory::CreateFile(const std::string& name) {
+std::shared_ptr<VfsFile> ReadOnlyVfsDirectory::CreateFile(std::string_view name) {
     return nullptr;
 }
 
-bool ReadOnlyVfsDirectory::DeleteSubdirectory(const std::string& name) {
+bool ReadOnlyVfsDirectory::DeleteSubdirectory(std::string_view name) {
     return false;
 }
 
-bool ReadOnlyVfsDirectory::DeleteFile(const std::string& name) {
+bool ReadOnlyVfsDirectory::DeleteFile(std::string_view name) {
     return false;
 }
 
-bool ReadOnlyVfsDirectory::Rename(const std::string& name) {
+bool ReadOnlyVfsDirectory::Rename(std::string_view name) {
     return false;
 }
 } // namespace FileSys

src/core/file_sys/vfs.h

@@ -6,11 +6,11 @@
 
 #include <memory>
 #include <string>
+#include <string_view>
 #include <type_traits>
 #include <vector>
 #include "boost/optional.hpp"
 #include "common/common_types.h"
-#include "common/file_util.h"
 
 namespace FileSys {
 struct VfsFile;
@@ -59,8 +59,7 @@ struct VfsFile : NonCopyable {
     // Returns the number of bytes (sizeof(T)*number_elements) read successfully.
     template <typename T>
     size_t ReadArray(T* data, size_t number_elements, size_t offset = 0) const {
-        static_assert(std::is_trivially_copyable<T>::value,
-                      "Data type must be trivially copyable.");
+        static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
 
         return Read(reinterpret_cast<u8*>(data), number_elements * sizeof(T), offset);
     }
@@ -69,8 +68,7 @@ struct VfsFile : NonCopyable {
     // Returns the number of bytes read successfully.
     template <typename T>
     size_t ReadBytes(T* data, size_t size, size_t offset = 0) const {
-        static_assert(std::is_trivially_copyable<T>::value,
-                      "Data type must be trivially copyable.");
+        static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
         return Read(reinterpret_cast<u8*>(data), size, offset);
     }
 
@@ -78,8 +76,7 @@ struct VfsFile : NonCopyable {
     // Returns the number of bytes read successfully (sizeof(T)).
     template <typename T>
     size_t ReadObject(T* data, size_t offset = 0) const {
-        static_assert(std::is_trivially_copyable<T>::value,
-                      "Data type must be trivially copyable.");
+        static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
         return Read(reinterpret_cast<u8*>(data), sizeof(T), offset);
     }
 
@@ -88,38 +85,34 @@ struct VfsFile : NonCopyable {
     virtual bool WriteByte(u8 data, size_t offset = 0);
     // Writes a vector of bytes to offset in file and returns the number of bytes successfully
     // written.
-    virtual size_t WriteBytes(std::vector<u8> data, size_t offset = 0);
+    virtual size_t WriteBytes(const std::vector<u8>& data, size_t offset = 0);
 
     // Writes an array of type T, size number_elements to offset in file.
     // Returns the number of bytes (sizeof(T)*number_elements) written successfully.
     template <typename T>
-    size_t WriteArray(T* data, size_t number_elements, size_t offset = 0) {
-        static_assert(std::is_trivially_copyable<T>::value,
-                      "Data type must be trivially copyable.");
-
+    size_t WriteArray(const T* data, size_t number_elements, size_t offset = 0) {
+        static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
         return Write(data, number_elements * sizeof(T), offset);
     }
 
     // Writes size bytes starting at memory location data to offset in file.
     // Returns the number of bytes written successfully.
     template <typename T>
-    size_t WriteBytes(T* data, size_t size, size_t offset = 0) {
-        static_assert(std::is_trivially_copyable<T>::value,
-                      "Data type must be trivially copyable.");
-        return Write(reinterpret_cast<u8*>(data), size, offset);
+    size_t WriteBytes(const T* data, size_t size, size_t offset = 0) {
+        static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
+        return Write(reinterpret_cast<const u8*>(data), size, offset);
     }
 
     // Writes one object of type T to offset in file.
     // Returns the number of bytes written successfully (sizeof(T)).
     template <typename T>
     size_t WriteObject(const T& data, size_t offset = 0) {
-        static_assert(std::is_trivially_copyable<T>::value,
-                      "Data type must be trivially copyable.");
+        static_assert(std::is_trivially_copyable_v<T>, "Data type must be trivially copyable.");
         return Write(&data, sizeof(T), offset);
     }
 
     // Renames the file to name. Returns whether or not the operation was successsful.
-    virtual bool Rename(const std::string& name) = 0;
+    virtual bool Rename(std::string_view name) = 0;
 };
 
 // A class representing a directory in an abstract filesystem.
@@ -128,27 +121,27 @@ struct VfsDirectory : NonCopyable {
 
     // Retrives the file located at path as if the current directory was root. Returns nullptr if
     // not found.
-    virtual std::shared_ptr<VfsFile> GetFileRelative(const std::string& path) const;
+    virtual std::shared_ptr<VfsFile> GetFileRelative(std::string_view path) const;
     // Calls GetFileRelative(path) on the root of the current directory.
-    virtual std::shared_ptr<VfsFile> GetFileAbsolute(const std::string& path) const;
+    virtual std::shared_ptr<VfsFile> GetFileAbsolute(std::string_view path) const;
 
     // Retrives the directory located at path as if the current directory was root. Returns nullptr
     // if not found.
-    virtual std::shared_ptr<VfsDirectory> GetDirectoryRelative(const std::string& path) const;
+    virtual std::shared_ptr<VfsDirectory> GetDirectoryRelative(std::string_view path) const;
     // Calls GetDirectoryRelative(path) on the root of the current directory.
-    virtual std::shared_ptr<VfsDirectory> GetDirectoryAbsolute(const std::string& path) const;
+    virtual std::shared_ptr<VfsDirectory> GetDirectoryAbsolute(std::string_view path) const;
 
     // Returns a vector containing all of the files in this directory.
     virtual std::vector<std::shared_ptr<VfsFile>> GetFiles() const = 0;
     // Returns the file with filename matching name. Returns nullptr if directory dosen't have a
     // file with name.
-    virtual std::shared_ptr<VfsFile> GetFile(const std::string& name) const;
+    virtual std::shared_ptr<VfsFile> GetFile(std::string_view name) const;
 
     // Returns a vector containing all of the subdirectories in this directory.
     virtual std::vector<std::shared_ptr<VfsDirectory>> GetSubdirectories() const = 0;
     // Returns the directory with name matching name. Returns nullptr if directory dosen't have a
     // directory with name.
-    virtual std::shared_ptr<VfsDirectory> GetSubdirectory(const std::string& name) const;
+    virtual std::shared_ptr<VfsDirectory> GetSubdirectory(std::string_view name) const;
 
     // Returns whether or not the directory can be written to.
     virtual bool IsWritable() const = 0;
@@ -168,53 +161,56 @@ struct VfsDirectory : NonCopyable {
 
     // Creates a new subdirectory with name name. Returns a pointer to the new directory or nullptr
     // if the operation failed.
-    virtual std::shared_ptr<VfsDirectory> CreateSubdirectory(const std::string& name) = 0;
+    virtual std::shared_ptr<VfsDirectory> CreateSubdirectory(std::string_view name) = 0;
     // Creates a new file with name name. Returns a pointer to the new file or nullptr if the
     // operation failed.
-    virtual std::shared_ptr<VfsFile> CreateFile(const std::string& name) = 0;
+    virtual std::shared_ptr<VfsFile> CreateFile(std::string_view name) = 0;
 
     // Creates a new file at the path relative to this directory. Also creates directories if
     // they do not exist and is supported by this implementation. Returns nullptr on any failure.
-    virtual std::shared_ptr<VfsFile> CreateFileRelative(const std::string& path);
+    virtual std::shared_ptr<VfsFile> CreateFileRelative(std::string_view path);
 
     // Creates a new file at the path relative to root of this directory. Also creates directories
     // if they do not exist and is supported by this implementation. Returns nullptr on any failure.
-    virtual std::shared_ptr<VfsFile> CreateFileAbsolute(const std::string& path);
+    virtual std::shared_ptr<VfsFile> CreateFileAbsolute(std::string_view path);
 
     // Creates a new directory at the path relative to this directory. Also creates directories if
     // they do not exist and is supported by this implementation. Returns nullptr on any failure.
-    virtual std::shared_ptr<VfsDirectory> CreateDirectoryRelative(const std::string& path);
+    virtual std::shared_ptr<VfsDirectory> CreateDirectoryRelative(std::string_view path);
 
     // Creates a new directory at the path relative to root of this directory. Also creates
     // directories if they do not exist and is supported by this implementation. Returns nullptr on
     // any failure.
-    virtual std::shared_ptr<VfsDirectory> CreateDirectoryAbsolute(const std::string& path);
+    virtual std::shared_ptr<VfsDirectory> CreateDirectoryAbsolute(std::string_view path);
 
     // Deletes the subdirectory with name and returns true on success.
-    virtual bool DeleteSubdirectory(const std::string& name) = 0;
+    virtual bool DeleteSubdirectory(std::string_view name) = 0;
     // Deletes all subdirectories and files of subdirectory with name recirsively and then deletes
     // the subdirectory. Returns true on success.
-    virtual bool DeleteSubdirectoryRecursive(const std::string& name);
+    virtual bool DeleteSubdirectoryRecursive(std::string_view name);
     // Returnes whether or not the file with name name was deleted successfully.
-    virtual bool DeleteFile(const std::string& name) = 0;
+    virtual bool DeleteFile(std::string_view name) = 0;
 
     // Returns whether or not this directory was renamed to name.
-    virtual bool Rename(const std::string& name) = 0;
+    virtual bool Rename(std::string_view name) = 0;
 
     // Returns whether or not the file with name src was successfully copied to a new file with name
     // dest.
-    virtual bool Copy(const std::string& src, const std::string& dest);
+    virtual bool Copy(std::string_view src, std::string_view dest);
 
     // Interprets the file with name file instead as a directory of type directory.
     // The directory must have a constructor that takes a single argument of type
     // std::shared_ptr<VfsFile>. Allows to reinterpret container files (i.e NCA, zip, XCI, etc) as a
     // subdirectory in one call.
     template <typename Directory>
-    bool InterpretAsDirectory(const std::string& file) {
+    bool InterpretAsDirectory(std::string_view file) {
         auto file_p = GetFile(file);
-        if (file_p == nullptr)
+
+        if (file_p == nullptr) {
             return false;
-        return ReplaceFileWithSubdirectory(file, std::make_shared<Directory>(file_p));
+        }
+
+        return ReplaceFileWithSubdirectory(file_p, std::make_shared<Directory>(file_p));
     }
 
 protected:
@@ -228,10 +224,10 @@ protected:
 struct ReadOnlyVfsDirectory : public VfsDirectory {
     bool IsWritable() const override;
     bool IsReadable() const override;
-    std::shared_ptr<VfsDirectory> CreateSubdirectory(const std::string& name) override;
-    std::shared_ptr<VfsFile> CreateFile(const std::string& name) override;
-    bool DeleteSubdirectory(const std::string& name) override;
-    bool DeleteFile(const std::string& name) override;
-    bool Rename(const std::string& name) override;
+    std::shared_ptr<VfsDirectory> CreateSubdirectory(std::string_view name) override;
+    std::shared_ptr<VfsFile> CreateFile(std::string_view name) override;
+    bool DeleteSubdirectory(std::string_view name) override;
+    bool DeleteFile(std::string_view name) override;
+    bool Rename(std::string_view name) override;
 };
 } // namespace FileSys

src/core/file_sys/vfs_offset.cpp

@@ -2,13 +2,16 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
+#include <utility>
+
 #include "core/file_sys/vfs_offset.h"
 
 namespace FileSys {
 
 OffsetVfsFile::OffsetVfsFile(std::shared_ptr<VfsFile> file_, size_t size_, size_t offset_,
-                             const std::string& name_)
-    : file(file_), offset(offset_), size(size_), name(name_) {}
+                             std::string name_)
+    : file(std::move(file_)), offset(offset_), size(size_), name(std::move(name_)) {}
 
 std::string OffsetVfsFile::GetName() const {
     return name.empty() ? file->GetName() : name;
@@ -73,11 +76,11 @@ bool OffsetVfsFile::WriteByte(u8 data, size_t r_offset) {
     return false;
 }
 
-size_t OffsetVfsFile::WriteBytes(std::vector<u8> data, size_t r_offset) {
+size_t OffsetVfsFile::WriteBytes(const std::vector<u8>& data, size_t r_offset) {
     return file->Write(data.data(), TrimToFit(data.size(), r_offset), offset + r_offset);
 }
 
-bool OffsetVfsFile::Rename(const std::string& name) {
+bool OffsetVfsFile::Rename(std::string_view name) {
     return file->Rename(name);
 }
 
@@ -86,7 +89,7 @@ size_t OffsetVfsFile::GetOffset() const {
 }
 
 size_t OffsetVfsFile::TrimToFit(size_t r_size, size_t r_offset) const {
-    return std::max<size_t>(std::min<size_t>(size - r_offset, r_size), 0);
+    return std::clamp(r_size, size_t{0}, size - r_offset);
 }
 
 } // namespace FileSys

src/core/file_sys/vfs_offset.h

@@ -4,6 +4,9 @@
 
 #pragma once
 
+#include <memory>
+#include <string_view>
+
 #include "core/file_sys/vfs.h"
 
 namespace FileSys {
@@ -14,7 +17,7 @@ namespace FileSys {
 // the size of this wrapper.
 struct OffsetVfsFile : public VfsFile {
     OffsetVfsFile(std::shared_ptr<VfsFile> file, size_t size, size_t offset = 0,
-                  const std::string& new_name = "");
+                  std::string new_name = "");
 
     std::string GetName() const override;
     size_t GetSize() const override;
@@ -28,9 +31,9 @@ struct OffsetVfsFile : public VfsFile {
     std::vector<u8> ReadBytes(size_t size, size_t offset) const override;
     std::vector<u8> ReadAllBytes() const override;
     bool WriteByte(u8 data, size_t offset) override;
-    size_t WriteBytes(std::vector<u8> data, size_t offset) override;
+    size_t WriteBytes(const std::vector<u8>& data, size_t offset) override;
 
-    bool Rename(const std::string& name) override;
+    bool Rename(std::string_view name) override;
 
     size_t GetOffset() const;
 

src/core/file_sys/vfs_real.cpp

@@ -2,30 +2,42 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
+#include <cstddef>
+#include <iterator>
+#include <utility>
+
 #include "common/common_paths.h"
 #include "common/logging/log.h"
 #include "core/file_sys/vfs_real.h"
 
 namespace FileSys {
 
-static std::string PermissionsToCharArray(Mode perms) {
-    std::string out;
-    switch (perms) {
-    case Mode::Read:
-        out += "r";
-        break;
-    case Mode::Write:
-        out += "r+";
-        break;
-    case Mode::Append:
-        out += "a";
-        break;
+static std::string ModeFlagsToString(Mode mode) {
+    std::string mode_str;
+
+    // Calculate the correct open mode for the file.
+    if (mode & Mode::Read && mode & Mode::Write) {
+        if (mode & Mode::Append)
+            mode_str = "a+";
+        else
+            mode_str = "r+";
+    } else {
+        if (mode & Mode::Read)
+            mode_str = "r";
+        else if (mode & Mode::Append)
+            mode_str = "a";
+        else if (mode & Mode::Write)
+            mode_str = "w";
     }
-    return out + "b";
+
+    mode_str += "b";
+
+    return mode_str;
 }
 
 RealVfsFile::RealVfsFile(const std::string& path_, Mode perms_)
-    : backing(path_, PermissionsToCharArray(perms_).c_str()), path(path_),
+    : backing(path_, ModeFlagsToString(perms_).c_str()), path(path_),
       parent_path(FileUtil::GetParentPath(path_)),
       path_components(FileUtil::SplitPathComponents(path_)),
       parent_components(FileUtil::SliceVector(path_components, 0, path_components.size() - 1)),
@@ -48,11 +60,11 @@ std::shared_ptr<VfsDirectory> RealVfsFile::GetContainingDirectory() const {
 }
 
 bool RealVfsFile::IsWritable() const {
-    return perms == Mode::Append || perms == Mode::Write;
+    return (perms & Mode::WriteAppend) != 0;
 }
 
 bool RealVfsFile::IsReadable() const {
-    return perms == Mode::Read || perms == Mode::Write;
+    return (perms & Mode::ReadWrite) != 0;
 }
 
 size_t RealVfsFile::Read(u8* data, size_t length, size_t offset) const {
@@ -67,12 +79,15 @@ size_t RealVfsFile::Write(const u8* data, size_t length, size_t offset) {
     return backing.WriteBytes(data, length);
 }
 
-bool RealVfsFile::Rename(const std::string& name) {
-    const auto out = FileUtil::Rename(GetName(), name);
-    path = parent_path + DIR_SEP + name;
+bool RealVfsFile::Rename(std::string_view name) {
+    std::string name_str(name.begin(), name.end());
+    const auto out = FileUtil::Rename(GetName(), name_str);
+
+    path = (parent_path + DIR_SEP).append(name);
     path_components = parent_components;
-    path_components.push_back(name);
-    backing = FileUtil::IOFile(path, PermissionsToCharArray(perms).c_str());
+    path_components.push_back(std::move(name_str));
+    backing = FileUtil::IOFile(path, ModeFlagsToString(perms).c_str());
+
     return out;
 }
 
@@ -85,15 +100,15 @@ RealVfsDirectory::RealVfsDirectory(const std::string& path_, Mode perms_)
       path_components(FileUtil::SplitPathComponents(path)),
       parent_components(FileUtil::SliceVector(path_components, 0, path_components.size() - 1)),
       perms(perms_) {
-    if (!FileUtil::Exists(path) && (perms == Mode::Write || perms == Mode::Append))
+    if (!FileUtil::Exists(path) && perms & Mode::WriteAppend)
         FileUtil::CreateDir(path);
-    unsigned size;
+
     if (perms == Mode::Append)
         return;
 
     FileUtil::ForeachDirectoryEntry(
-        &size, path,
-        [this](unsigned* entries_out, const std::string& directory, const std::string& filename) {
+        nullptr, path,
+        [this](u64* entries_out, const std::string& directory, const std::string& filename) {
             std::string full_path = directory + DIR_SEP + filename;
             if (FileUtil::IsDirectory(full_path))
                 subdirectories.emplace_back(std::make_shared<RealVfsDirectory>(full_path, perms));
@@ -104,19 +119,19 @@ RealVfsDirectory::RealVfsDirectory(const std::string& path_, Mode perms_)
 }
 
 std::vector<std::shared_ptr<VfsFile>> RealVfsDirectory::GetFiles() const {
-    return std::vector<std::shared_ptr<VfsFile>>(files);
+    return files;
 }
 
 std::vector<std::shared_ptr<VfsDirectory>> RealVfsDirectory::GetSubdirectories() const {
-    return std::vector<std::shared_ptr<VfsDirectory>>(subdirectories);
+    return subdirectories;
 }
 
 bool RealVfsDirectory::IsWritable() const {
-    return perms == Mode::Write || perms == Mode::Append;
+    return (perms & Mode::WriteAppend) != 0;
 }
 
 bool RealVfsDirectory::IsReadable() const {
-    return perms == Mode::Read || perms == Mode::Write;
+    return (perms & Mode::ReadWrite) != 0;
 }
 
 std::string RealVfsDirectory::GetName() const {
@@ -130,47 +145,66 @@ std::shared_ptr<VfsDirectory> RealVfsDirectory::GetParentDirectory() const {
     return std::make_shared<RealVfsDirectory>(parent_path, perms);
 }
 
-std::shared_ptr<VfsDirectory> RealVfsDirectory::CreateSubdirectory(const std::string& name) {
-    if (!FileUtil::CreateDir(path + DIR_SEP + name))
+std::shared_ptr<VfsDirectory> RealVfsDirectory::CreateSubdirectory(std::string_view name) {
+    const std::string subdir_path = (path + DIR_SEP).append(name);
+
+    if (!FileUtil::CreateDir(subdir_path)) {
         return nullptr;
-    subdirectories.emplace_back(std::make_shared<RealVfsDirectory>(path + DIR_SEP + name, perms));
+    }
+
+    subdirectories.emplace_back(std::make_shared<RealVfsDirectory>(subdir_path, perms));
     return subdirectories.back();
 }
 
-std::shared_ptr<VfsFile> RealVfsDirectory::CreateFile(const std::string& name) {
-    if (!FileUtil::CreateEmptyFile(path + DIR_SEP + name))
+std::shared_ptr<VfsFile> RealVfsDirectory::CreateFile(std::string_view name) {
+    const std::string file_path = (path + DIR_SEP).append(name);
+
+    if (!FileUtil::CreateEmptyFile(file_path)) {
         return nullptr;
-    files.emplace_back(std::make_shared<RealVfsFile>(path + DIR_SEP + name, perms));
+    }
+
+    files.emplace_back(std::make_shared<RealVfsFile>(file_path, perms));
     return files.back();
 }
 
-bool RealVfsDirectory::DeleteSubdirectory(const std::string& name) {
-    return FileUtil::DeleteDirRecursively(path + DIR_SEP + name);
+bool RealVfsDirectory::DeleteSubdirectory(std::string_view name) {
+    const std::string subdir_path = (path + DIR_SEP).append(name);
+
+    return FileUtil::DeleteDirRecursively(subdir_path);
 }
 
-bool RealVfsDirectory::DeleteFile(const std::string& name) {
-    auto file = GetFile(name);
-    if (file == nullptr)
+bool RealVfsDirectory::DeleteFile(std::string_view name) {
+    const auto file = GetFile(name);
+
+    if (file == nullptr) {
         return false;
+    }
+
     files.erase(std::find(files.begin(), files.end(), file));
+
     auto real_file = std::static_pointer_cast<RealVfsFile>(file);
     real_file->Close();
-    return FileUtil::Delete(path + DIR_SEP + name);
+
+    const std::string file_path = (path + DIR_SEP).append(name);
+    return FileUtil::Delete(file_path);
 }
 
-bool RealVfsDirectory::Rename(const std::string& name) {
-    return FileUtil::Rename(path, parent_path + DIR_SEP + name);
+bool RealVfsDirectory::Rename(std::string_view name) {
+    const std::string new_name = (parent_path + DIR_SEP).append(name);
+
+    return FileUtil::Rename(path, new_name);
 }
 
 bool RealVfsDirectory::ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) {
-    auto iter = std::find(files.begin(), files.end(), file);
+    const auto iter = std::find(files.begin(), files.end(), file);
     if (iter == files.end())
         return false;
 
-    files[iter - files.begin()] = files.back();
+    const std::ptrdiff_t offset = std::distance(files.begin(), iter);
+    files[offset] = files.back();
     files.pop_back();
 
-    subdirectories.emplace_back(dir);
+    subdirectories.emplace_back(std::move(dir));
 
     return true;
 }

src/core/file_sys/vfs_real.h

@@ -4,6 +4,8 @@
 
 #pragma once
 
+#include <string_view>
+
 #include "common/file_util.h"
 #include "core/file_sys/mode.h"
 #include "core/file_sys/vfs.h"
@@ -24,7 +26,7 @@ struct RealVfsFile : public VfsFile {
     bool IsReadable() const override;
     size_t Read(u8* data, size_t length, size_t offset) const override;
     size_t Write(const u8* data, size_t length, size_t offset) override;
-    bool Rename(const std::string& name) override;
+    bool Rename(std::string_view name) override;
 
 private:
     bool Close();
@@ -47,11 +49,11 @@ struct RealVfsDirectory : public VfsDirectory {
     bool IsReadable() const override;
     std::string GetName() const override;
     std::shared_ptr<VfsDirectory> GetParentDirectory() const override;
-    std::shared_ptr<VfsDirectory> CreateSubdirectory(const std::string& name) override;
-    std::shared_ptr<VfsFile> CreateFile(const std::string& name) override;
-    bool DeleteSubdirectory(const std::string& name) override;
-    bool DeleteFile(const std::string& name) override;
-    bool Rename(const std::string& name) override;
+    std::shared_ptr<VfsDirectory> CreateSubdirectory(std::string_view name) override;
+    std::shared_ptr<VfsFile> CreateFile(std::string_view name) override;
+    bool DeleteSubdirectory(std::string_view name) override;
+    bool DeleteFile(std::string_view name) override;
+    bool Rename(std::string_view name) override;
 
 protected:
     bool ReplaceFileWithSubdirectory(VirtualFile file, VirtualDir dir) override;

src/core/gdbstub/gdbstub.cpp

@@ -205,7 +205,7 @@ static Kernel::Thread* FindThreadById(int id) {
     for (u32 core = 0; core < Core::NUM_CPU_CORES; core++) {
         const auto& threads = Core::System::GetInstance().Scheduler(core)->GetThreadList();
         for (auto& thread : threads) {
-            if (thread->GetThreadId() == id) {
+            if (thread->GetThreadId() == static_cast<u32>(id)) {
                 current_core = core;
                 return thread.get();
             }
@@ -214,7 +214,7 @@ static Kernel::Thread* FindThreadById(int id) {
     return nullptr;
 }
 
-static u64 RegRead(int id, Kernel::Thread* thread = nullptr) {
+static u64 RegRead(std::size_t id, Kernel::Thread* thread = nullptr) {
     if (!thread) {
         return 0;
     }
@@ -234,7 +234,7 @@ static u64 RegRead(int id, Kernel::Thread* thread = nullptr) {
     }
 }
 
-static void RegWrite(int id, u64 val, Kernel::Thread* thread = nullptr) {
+static void RegWrite(std::size_t id, u64 val, Kernel::Thread* thread = nullptr) {
     if (!thread) {
         return;
     }
@@ -744,7 +744,7 @@ static bool IsDataAvailable() {
     fd_set fd_socket;
 
     FD_ZERO(&fd_socket);
-    FD_SET(gdbserver_socket, &fd_socket);
+    FD_SET(static_cast<u32>(gdbserver_socket), &fd_socket);
 
     struct timeval t;
     t.tv_sec = 0;
@@ -793,7 +793,7 @@ static void ReadRegisters() {
 
     u8* bufptr = buffer;
 
-    for (int reg = 0; reg <= SP_REGISTER; reg++) {
+    for (u32 reg = 0; reg <= SP_REGISTER; reg++) {
         LongToGdbHex(bufptr + reg * 16, RegRead(reg, current_thread));
     }
 
@@ -807,7 +807,7 @@ static void ReadRegisters() {
 
     bufptr += 8;
 
-    for (int reg = UC_ARM64_REG_Q0; reg <= UC_ARM64_REG_Q0 + 31; reg++) {
+    for (u32 reg = UC_ARM64_REG_Q0; reg <= UC_ARM64_REG_Q0 + 31; reg++) {
         LongToGdbHex(bufptr + reg * 16, RegRead(reg, current_thread));
     }
 
@@ -858,7 +858,7 @@ static void WriteRegisters() {
     if (command_buffer[0] != 'G')
         return SendReply("E01");
 
-    for (int i = 0, reg = 0; reg <= FPSCR_REGISTER; i++, reg++) {
+    for (u32 i = 0, reg = 0; reg <= FPSCR_REGISTER; i++, reg++) {
         if (reg <= SP_REGISTER) {
             RegWrite(reg, GdbHexToLong(buffer_ptr + i * 16), current_thread);
         } else if (reg == PC_REGISTER) {

src/core/hle/config_mem.cpp

@@ -1,31 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <cstring>
-#include "core/hle/config_mem.h"
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-
-namespace ConfigMem {
-
-ConfigMemDef config_mem;
-
-void Init() {
-    std::memset(&config_mem, 0, sizeof(config_mem));
-
-    // Values extracted from firmware 11.2.0-35E
-    config_mem.kernel_version_min = 0x34;
-    config_mem.kernel_version_maj = 0x2;
-    config_mem.ns_tid = 0x0004013000008002;
-    config_mem.sys_core_ver = 0x2;
-    config_mem.unit_info = 0x1; // Bit 0 set for Retail
-    config_mem.prev_firm = 0x1;
-    config_mem.ctr_sdk_ver = 0x0000F297;
-    config_mem.firm_version_min = 0x34;
-    config_mem.firm_version_maj = 0x2;
-    config_mem.firm_sys_core_ver = 0x2;
-    config_mem.firm_ctr_sdk_ver = 0x0000F297;
-}
-
-} // namespace ConfigMem

src/core/hle/config_mem.h

@@ -1,56 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-// Configuration memory stores various hardware/kernel configuration settings. This memory page is
-// read-only for ARM11 processes. I'm guessing this would normally be written to by the firmware/
-// bootrom. Because we're not emulating this, and essentially just "stubbing" the functionality, I'm
-// putting this as a subset of HLE for now.
-
-#include "common/common_funcs.h"
-#include "common/common_types.h"
-#include "common/swap.h"
-#include "core/memory.h"
-
-////////////////////////////////////////////////////////////////////////////////////////////////////
-
-namespace ConfigMem {
-
-struct ConfigMemDef {
-    u8 kernel_unk;                       // 0
-    u8 kernel_version_rev;               // 1
-    u8 kernel_version_min;               // 2
-    u8 kernel_version_maj;               // 3
-    u32_le update_flag;                  // 4
-    u64_le ns_tid;                       // 8
-    u32_le sys_core_ver;                 // 10
-    u8 unit_info;                        // 14
-    u8 boot_firm;                        // 15
-    u8 prev_firm;                        // 16
-    INSERT_PADDING_BYTES(0x1);           // 17
-    u32_le ctr_sdk_ver;                  // 18
-    INSERT_PADDING_BYTES(0x30 - 0x1C);   // 1C
-    u32_le app_mem_type;                 // 30
-    INSERT_PADDING_BYTES(0x40 - 0x34);   // 34
-    u32_le app_mem_alloc;                // 40
-    u32_le sys_mem_alloc;                // 44
-    u32_le base_mem_alloc;               // 48
-    INSERT_PADDING_BYTES(0x60 - 0x4C);   // 4C
-    u8 firm_unk;                         // 60
-    u8 firm_version_rev;                 // 61
-    u8 firm_version_min;                 // 62
-    u8 firm_version_maj;                 // 63
-    u32_le firm_sys_core_ver;            // 64
-    u32_le firm_ctr_sdk_ver;             // 68
-    INSERT_PADDING_BYTES(0x1000 - 0x6C); // 6C
-};
-static_assert(sizeof(ConfigMemDef) == Memory::CONFIG_MEMORY_SIZE,
-              "Config Memory structure size is wrong");
-
-extern ConfigMemDef config_mem;
-
-void Init();
-
-} // namespace ConfigMem

src/core/hle/ipc_helpers.h

@@ -174,6 +174,25 @@ public:
     template <typename First, typename... Other>
     void Push(const First& first_value, const Other&... other_values);
 
+    /**
+     * Helper function for pushing strongly-typed enumeration values.
+     *
+     * @tparam Enum The enumeration type to be pushed
+     *
+     * @param value The value to push.
+     *
+     * @note The underlying size of the enumeration type is the size of the
+     *       data that gets pushed. e.g. "enum class SomeEnum : u16" will
+     *       push a u16-sized amount of data.
+     */
+    template <typename Enum>
+    void PushEnum(Enum value) {
+        static_assert(std::is_enum_v<Enum>, "T must be an enum type within a PushEnum call.");
+        static_assert(!std::is_convertible_v<Enum, int>,
+                      "enum type in PushEnum must be a strongly typed enum.");
+        Push(static_cast<std::underlying_type_t<Enum>>(value));
+    }
+
     /**
      * @brief Copies the content of the given trivially copyable class to the buffer as a normal
      * param

src/core/hle/kernel/address_arbiter.cpp

@@ -20,7 +20,7 @@ namespace AddressArbiter {
 static ResultCode WaitForAddress(VAddr address, s64 timeout) {
     SharedPtr<Thread> current_thread = GetCurrentThread();
     current_thread->arb_wait_address = address;
-    current_thread->status = THREADSTATUS_WAIT_ARB;
+    current_thread->status = ThreadStatus::WaitArb;
     current_thread->wakeup_callback = nullptr;
 
     current_thread->WakeAfterDelay(timeout);
@@ -65,7 +65,7 @@ static void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num
 
     // Signal the waiting threads.
     for (size_t i = 0; i < last; i++) {
-        ASSERT(waiting_threads[i]->status == THREADSTATUS_WAIT_ARB);
+        ASSERT(waiting_threads[i]->status == ThreadStatus::WaitArb);
         waiting_threads[i]->SetWaitSynchronizationResult(RESULT_SUCCESS);
         waiting_threads[i]->arb_wait_address = 0;
         waiting_threads[i]->ResumeFromWait();

src/core/hle/kernel/hle_ipc.cpp

@@ -38,7 +38,7 @@ SharedPtr<Event> HLERequestContext::SleepClientThread(SharedPtr<Thread> thread,
     thread->wakeup_callback =
         [context = *this, callback](ThreadWakeupReason reason, SharedPtr<Thread> thread,
                                     SharedPtr<WaitObject> object, size_t index) mutable -> bool {
-        ASSERT(thread->status == THREADSTATUS_WAIT_HLE_EVENT);
+        ASSERT(thread->status == ThreadStatus::WaitHLEEvent);
         callback(thread, context, reason);
         context.WriteToOutgoingCommandBuffer(*thread);
         return true;
@@ -50,7 +50,7 @@ SharedPtr<Event> HLERequestContext::SleepClientThread(SharedPtr<Thread> thread,
     }
 
     event->Clear();
-    thread->status = THREADSTATUS_WAIT_HLE_EVENT;
+    thread->status = ThreadStatus::WaitHLEEvent;
     thread->wait_objects = {event};
     event->AddWaitingThread(thread);
 
@@ -301,10 +301,6 @@ size_t HLERequestContext::WriteBuffer(const void* buffer, size_t size, int buffe
     return size;
 }
 
-size_t HLERequestContext::WriteBuffer(const std::vector<u8>& buffer, int buffer_index) const {
-    return WriteBuffer(buffer.data(), buffer.size());
-}
-
 size_t HLERequestContext::GetReadBufferSize(int buffer_index) const {
     const bool is_buffer_a{BufferDescriptorA().size() && BufferDescriptorA()[buffer_index].Size()};
     return is_buffer_a ? BufferDescriptorA()[buffer_index].Size()

src/core/hle/kernel/hle_ipc.h

@@ -5,8 +5,10 @@
 #pragma once
 
 #include <array>
+#include <iterator>
 #include <memory>
 #include <string>
+#include <type_traits>
 #include <vector>
 #include <boost/container/small_vector.hpp>
 #include "common/common_types.h"
@@ -171,8 +173,25 @@ public:
     /// Helper function to write a buffer using the appropriate buffer descriptor
     size_t WriteBuffer(const void* buffer, size_t size, int buffer_index = 0) const;
 
-    /// Helper function to write a buffer using the appropriate buffer descriptor
-    size_t WriteBuffer(const std::vector<u8>& buffer, int buffer_index = 0) const;
+    /* Helper function to write a buffer using the appropriate buffer descriptor
+     *
+     * @tparam ContiguousContainer an arbitrary container that satisfies the
+     *         ContiguousContainer concept in the C++ standard library.
+     *
+     * @param container    The container to write the data of into a buffer.
+     * @param buffer_index The buffer in particular to write to.
+     */
+    template <typename ContiguousContainer,
+              typename = std::enable_if_t<!std::is_pointer_v<ContiguousContainer>>>
+    size_t WriteBuffer(const ContiguousContainer& container, int buffer_index = 0) const {
+        using ContiguousType = typename ContiguousContainer::value_type;
+
+        static_assert(std::is_trivially_copyable_v<ContiguousType>,
+                      "Container to WriteBuffer must contain trivially copyable objects");
+
+        return WriteBuffer(std::data(container), std::size(container) * sizeof(ContiguousType),
+                           buffer_index);
+    }
 
     /// Helper function to get the size of the input buffer
     size_t GetReadBufferSize(int buffer_index = 0) const;

src/core/hle/kernel/kernel.cpp

@@ -2,7 +2,6 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#include "core/hle/config_mem.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory.h"
@@ -11,7 +10,6 @@
 #include "core/hle/kernel/resource_limit.h"
 #include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/timer.h"
-#include "core/hle/shared_page.h"
 
 namespace Kernel {
 
@@ -19,9 +17,6 @@ unsigned int Object::next_object_id;
 
 /// Initialize the kernel
 void Init(u32 system_mode) {
-    ConfigMem::Init();
-    SharedPage::Init();
-
     Kernel::MemoryInit(system_mode);
 
     Kernel::ResourceLimitsInit();

src/core/hle/kernel/memory.cpp

@@ -11,11 +11,9 @@
 #include "common/assert.h"
 #include "common/common_types.h"
 #include "common/logging/log.h"
-#include "core/hle/config_mem.h"
 #include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/vm_manager.h"
 #include "core/hle/result.h"
-#include "core/hle/shared_page.h"
 #include "core/memory.h"
 #include "core/memory_setup.h"
 
@@ -63,14 +61,6 @@ void MemoryInit(u32 mem_type) {
 
     // We must've allocated the entire FCRAM by the end
     ASSERT(base == Memory::FCRAM_SIZE);
-
-    using ConfigMem::config_mem;
-    config_mem.app_mem_type = mem_type;
-    // app_mem_malloc does not always match the configured size for memory_region[0]: in case the
-    // n3DS type override is in effect it reports the size the game expects, not the real one.
-    config_mem.app_mem_alloc = memory_region_sizes[mem_type][0];
-    config_mem.sys_mem_alloc = static_cast<u32_le>(memory_regions[1].size);
-    config_mem.base_mem_alloc = static_cast<u32_le>(memory_regions[2].size);
 }
 
 void MemoryShutdown() {

src/core/hle/kernel/mutex.cpp

@@ -28,7 +28,7 @@ static std::pair<SharedPtr<Thread>, u32> GetHighestPriorityMutexWaitingThread(
         if (thread->mutex_wait_address != mutex_addr)
             continue;
 
-        ASSERT(thread->status == THREADSTATUS_WAIT_MUTEX);
+        ASSERT(thread->status == ThreadStatus::WaitMutex);
 
         ++num_waiters;
         if (highest_priority_thread == nullptr ||
@@ -83,7 +83,7 @@ ResultCode Mutex::TryAcquire(VAddr address, Handle holding_thread_handle,
     GetCurrentThread()->mutex_wait_address = address;
     GetCurrentThread()->wait_handle = requesting_thread_handle;
 
-    GetCurrentThread()->status = THREADSTATUS_WAIT_MUTEX;
+    GetCurrentThread()->status = ThreadStatus::WaitMutex;
     GetCurrentThread()->wakeup_callback = nullptr;
 
     // Update the lock holder thread's priority to prevent priority inversion.
@@ -121,7 +121,7 @@ ResultCode Mutex::Release(VAddr address) {
     // Grant the mutex to the next waiting thread and resume it.
     Memory::Write32(address, mutex_value);
 
-    ASSERT(thread->status == THREADSTATUS_WAIT_MUTEX);
+    ASSERT(thread->status == ThreadStatus::WaitMutex);
     thread->ResumeFromWait();
 
     thread->lock_owner = nullptr;

src/core/hle/kernel/scheduler.cpp

@@ -34,7 +34,7 @@ Thread* Scheduler::PopNextReadyThread() {
     Thread* next = nullptr;
     Thread* thread = GetCurrentThread();
 
-    if (thread && thread->status == THREADSTATUS_RUNNING) {
+    if (thread && thread->status == ThreadStatus::Running) {
         // We have to do better than the current thread.
         // This call returns null when that's not possible.
         next = ready_queue.pop_first_better(thread->current_priority);
@@ -56,18 +56,20 @@ void Scheduler::SwitchContext(Thread* new_thread) {
     if (previous_thread) {
         previous_thread->last_running_ticks = CoreTiming::GetTicks();
         cpu_core->SaveContext(previous_thread->context);
+        // Save the TPIDR_EL0 system register in case it was modified.
+        previous_thread->tpidr_el0 = cpu_core->GetTPIDR_EL0();
 
-        if (previous_thread->status == THREADSTATUS_RUNNING) {
+        if (previous_thread->status == ThreadStatus::Running) {
             // This is only the case when a reschedule is triggered without the current thread
             // yielding execution (i.e. an event triggered, system core time-sliced, etc)
             ready_queue.push_front(previous_thread->current_priority, previous_thread);
-            previous_thread->status = THREADSTATUS_READY;
+            previous_thread->status = ThreadStatus::Ready;
         }
     }
 
     // Load context of new thread
     if (new_thread) {
-        ASSERT_MSG(new_thread->status == THREADSTATUS_READY,
+        ASSERT_MSG(new_thread->status == ThreadStatus::Ready,
                    "Thread must be ready to become running.");
 
         // Cancel any outstanding wakeup events for this thread
@@ -78,7 +80,7 @@ void Scheduler::SwitchContext(Thread* new_thread) {
         current_thread = new_thread;
 
         ready_queue.remove(new_thread->current_priority, new_thread);
-        new_thread->status = THREADSTATUS_RUNNING;
+        new_thread->status = ThreadStatus::Running;
 
         if (previous_process != current_thread->owner_process) {
             Core::CurrentProcess() = current_thread->owner_process;
@@ -87,6 +89,7 @@ void Scheduler::SwitchContext(Thread* new_thread) {
 
         cpu_core->LoadContext(new_thread->context);
         cpu_core->SetTlsAddress(new_thread->GetTLSAddress());
+        cpu_core->SetTPIDR_EL0(new_thread->GetTPIDR_EL0());
         cpu_core->ClearExclusiveState();
     } else {
         current_thread = nullptr;
@@ -129,14 +132,14 @@ void Scheduler::RemoveThread(Thread* thread) {
 void Scheduler::ScheduleThread(Thread* thread, u32 priority) {
     std::lock_guard<std::mutex> lock(scheduler_mutex);
 
-    ASSERT(thread->status == THREADSTATUS_READY);
+    ASSERT(thread->status == ThreadStatus::Ready);
     ready_queue.push_back(priority, thread);
 }
 
 void Scheduler::UnscheduleThread(Thread* thread, u32 priority) {
     std::lock_guard<std::mutex> lock(scheduler_mutex);
 
-    ASSERT(thread->status == THREADSTATUS_READY);
+    ASSERT(thread->status == ThreadStatus::Ready);
     ready_queue.remove(priority, thread);
 }
 
@@ -144,7 +147,7 @@ void Scheduler::SetThreadPriority(Thread* thread, u32 priority) {
     std::lock_guard<std::mutex> lock(scheduler_mutex);
 
     // If thread was ready, adjust queues
-    if (thread->status == THREADSTATUS_READY)
+    if (thread->status == ThreadStatus::Ready)
         ready_queue.move(thread, thread->current_priority, priority);
     else
         ready_queue.prepare(priority);

src/core/hle/kernel/server_session.cpp

@@ -110,10 +110,10 @@ ResultCode ServerSession::HandleSyncRequest(SharedPtr<Thread> thread) {
         result = hle_handler->HandleSyncRequest(context);
     }
 
-    if (thread->status == THREADSTATUS_RUNNING) {
+    if (thread->status == ThreadStatus::Running) {
         // Put the thread to sleep until the server replies, it will be awoken in
         // svcReplyAndReceive for LLE servers.
-        thread->status = THREADSTATUS_WAIT_IPC;
+        thread->status = ThreadStatus::WaitIPC;
 
         if (hle_handler != nullptr) {
             // For HLE services, we put the request threads to sleep for a short duration to

src/core/hle/kernel/svc.cpp

@@ -133,7 +133,7 @@ static ResultCode GetProcessId(u32* process_id, Handle process_handle) {
 /// Default thread wakeup callback for WaitSynchronization
 static bool DefaultThreadWakeupCallback(ThreadWakeupReason reason, SharedPtr<Thread> thread,
                                         SharedPtr<WaitObject> object, size_t index) {
-    ASSERT(thread->status == THREADSTATUS_WAIT_SYNCH_ANY);
+    ASSERT(thread->status == ThreadStatus::WaitSynchAny);
 
     if (reason == ThreadWakeupReason::Timeout) {
         thread->SetWaitSynchronizationResult(RESULT_TIMEOUT);
@@ -197,7 +197,7 @@ static ResultCode WaitSynchronization(Handle* index, VAddr handles_address, u64
         object->AddWaitingThread(thread);
 
     thread->wait_objects = std::move(objects);
-    thread->status = THREADSTATUS_WAIT_SYNCH_ANY;
+    thread->status = ThreadStatus::WaitSynchAny;
 
     // Create an event to wake the thread up after the specified nanosecond delay has passed
     thread->WakeAfterDelay(nano_seconds);
@@ -217,7 +217,7 @@ static ResultCode CancelSynchronization(Handle thread_handle) {
         return ERR_INVALID_HANDLE;
     }
 
-    ASSERT(thread->status == THREADSTATUS_WAIT_SYNCH_ANY);
+    ASSERT(thread->status == ThreadStatus::WaitSynchAny);
     thread->SetWaitSynchronizationResult(
         ResultCode(ErrorModule::Kernel, ErrCodes::SynchronizationCanceled));
     thread->ResumeFromWait();
@@ -468,8 +468,8 @@ static void ExitProcess() {
                 continue;
 
             // TODO(Subv): When are the other running/ready threads terminated?
-            ASSERT_MSG(thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
-                           thread->status == THREADSTATUS_WAIT_SYNCH_ALL,
+            ASSERT_MSG(thread->status == ThreadStatus::WaitSynchAny ||
+                           thread->status == ThreadStatus::WaitSynchAll,
                        "Exiting processes with non-waiting threads is currently unimplemented");
 
             thread->Stop();
@@ -545,7 +545,7 @@ static ResultCode StartThread(Handle thread_handle) {
         return ERR_INVALID_HANDLE;
     }
 
-    ASSERT(thread->status == THREADSTATUS_DORMANT);
+    ASSERT(thread->status == ThreadStatus::Dormant);
 
     thread->ResumeFromWait();
     Core::System::GetInstance().CpuCore(thread->processor_id).PrepareReschedule();
@@ -596,7 +596,7 @@ static ResultCode WaitProcessWideKeyAtomic(VAddr mutex_addr, VAddr condition_var
     current_thread->condvar_wait_address = condition_variable_addr;
     current_thread->mutex_wait_address = mutex_addr;
     current_thread->wait_handle = thread_handle;
-    current_thread->status = THREADSTATUS_WAIT_MUTEX;
+    current_thread->status = ThreadStatus::WaitMutex;
     current_thread->wakeup_callback = nullptr;
 
     current_thread->WakeAfterDelay(nano_seconds);
@@ -650,13 +650,28 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target
 
         ASSERT(thread->condvar_wait_address == condition_variable_addr);
 
-        // If the mutex is not yet acquired, acquire it.
-        u32 mutex_val = Memory::Read32(thread->mutex_wait_address);
+        size_t current_core = Core::System::GetInstance().CurrentCoreIndex();
+
+        auto& monitor = Core::System::GetInstance().Monitor();
+
+        // Atomically read the value of the mutex.
+        u32 mutex_val = 0;
+        do {
+            monitor.SetExclusive(current_core, thread->mutex_wait_address);
+
+            // If the mutex is not yet acquired, acquire it.
+            mutex_val = Memory::Read32(thread->mutex_wait_address);
+
+            if (mutex_val != 0) {
+                monitor.ClearExclusive();
+                break;
+            }
+        } while (!monitor.ExclusiveWrite32(current_core, thread->mutex_wait_address,
+                                           thread->wait_handle));
 
         if (mutex_val == 0) {
             // We were able to acquire the mutex, resume this thread.
-            Memory::Write32(thread->mutex_wait_address, thread->wait_handle);
-            ASSERT(thread->status == THREADSTATUS_WAIT_MUTEX);
+            ASSERT(thread->status == ThreadStatus::WaitMutex);
             thread->ResumeFromWait();
 
             auto lock_owner = thread->lock_owner;
@@ -668,17 +683,26 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target
             thread->condvar_wait_address = 0;
             thread->wait_handle = 0;
         } else {
-            // Couldn't acquire the mutex, block the thread.
+            // Atomically signal that the mutex now has a waiting thread.
+            do {
+                monitor.SetExclusive(current_core, thread->mutex_wait_address);
+
+                // Ensure that the mutex value is still what we expect.
+                u32 value = Memory::Read32(thread->mutex_wait_address);
+                // TODO(Subv): When this happens, the kernel just clears the exclusive state and
+                // retries the initial read for this thread.
+                ASSERT_MSG(mutex_val == value, "Unhandled synchronization primitive case");
+            } while (!monitor.ExclusiveWrite32(current_core, thread->mutex_wait_address,
+                                               mutex_val | Mutex::MutexHasWaitersFlag));
+
+            // The mutex is already owned by some other thread, make this thread wait on it.
             Handle owner_handle = static_cast<Handle>(mutex_val & Mutex::MutexOwnerMask);
             auto owner = g_handle_table.Get<Thread>(owner_handle);
             ASSERT(owner);
-            ASSERT(thread->status != THREADSTATUS_RUNNING);
-            thread->status = THREADSTATUS_WAIT_MUTEX;
+            ASSERT(thread->status != ThreadStatus::Running);
+            thread->status = ThreadStatus::WaitMutex;
             thread->wakeup_callback = nullptr;
 
-            // Signal that the mutex now has a waiting thread.
-            Memory::Write32(thread->mutex_wait_address, mutex_val | Mutex::MutexHasWaitersFlag);
-
             owner->AddMutexWaiter(thread);
 
             Core::System::GetInstance().CpuCore(thread->processor_id).PrepareReschedule();
@@ -795,8 +819,9 @@ static ResultCode SetThreadCoreMask(Handle thread_handle, u32 core, u64 mask) {
         return ERR_INVALID_HANDLE;
     }
 
-    if (core == THREADPROCESSORID_DEFAULT) {
-        ASSERT(thread->owner_process->ideal_processor != THREADPROCESSORID_DEFAULT);
+    if (core == static_cast<u32>(THREADPROCESSORID_DEFAULT)) {
+        ASSERT(thread->owner_process->ideal_processor !=
+               static_cast<u8>(THREADPROCESSORID_DEFAULT));
         // Set the target CPU to the one specified in the process' exheader.
         core = thread->owner_process->ideal_processor;
         mask = 1ull << core;
@@ -811,7 +836,7 @@ static ResultCode SetThreadCoreMask(Handle thread_handle, u32 core, u64 mask) {
 
     if (core == OnlyChangeMask) {
         core = thread->ideal_core;
-    } else if (core >= Core::NUM_CPU_CORES && core != -1) {
+    } else if (core >= Core::NUM_CPU_CORES && core != static_cast<u32>(-1)) {
         return ResultCode(ErrorModule::Kernel, ErrCodes::InvalidProcessorId);
     }
 

src/core/hle/kernel/thread.cpp

@@ -30,7 +30,7 @@ namespace Kernel {
 static CoreTiming::EventType* ThreadWakeupEventType = nullptr;
 
 bool Thread::ShouldWait(Thread* thread) const {
-    return status != THREADSTATUS_DEAD;
+    return status != ThreadStatus::Dead;
 }
 
 void Thread::Acquire(Thread* thread) {
@@ -63,11 +63,11 @@ void Thread::Stop() {
 
     // Clean up thread from ready queue
     // This is only needed when the thread is termintated forcefully (SVC TerminateProcess)
-    if (status == THREADSTATUS_READY) {
+    if (status == ThreadStatus::Ready) {
         scheduler->UnscheduleThread(this, current_priority);
     }
 
-    status = THREADSTATUS_DEAD;
+    status = ThreadStatus::Dead;
 
     WakeupAllWaitingThreads();
 
@@ -86,7 +86,7 @@ void Thread::Stop() {
 
 void WaitCurrentThread_Sleep() {
     Thread* thread = GetCurrentThread();
-    thread->status = THREADSTATUS_WAIT_SLEEP;
+    thread->status = ThreadStatus::WaitSleep;
 }
 
 void ExitCurrentThread() {
@@ -110,10 +110,9 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
 
     bool resume = true;
 
-    if (thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
-        thread->status == THREADSTATUS_WAIT_SYNCH_ALL ||
-        thread->status == THREADSTATUS_WAIT_HLE_EVENT) {
-
+    if (thread->status == ThreadStatus::WaitSynchAny ||
+        thread->status == ThreadStatus::WaitSynchAll ||
+        thread->status == ThreadStatus::WaitHLEEvent) {
         // Remove the thread from each of its waiting objects' waitlists
         for (auto& object : thread->wait_objects)
             object->RemoveWaitingThread(thread.get());
@@ -126,7 +125,7 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
 
     if (thread->mutex_wait_address != 0 || thread->condvar_wait_address != 0 ||
         thread->wait_handle) {
-        ASSERT(thread->status == THREADSTATUS_WAIT_MUTEX);
+        ASSERT(thread->status == ThreadStatus::WaitMutex);
         thread->mutex_wait_address = 0;
         thread->condvar_wait_address = 0;
         thread->wait_handle = 0;
@@ -141,7 +140,7 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
     }
 
     if (thread->arb_wait_address != 0) {
-        ASSERT(thread->status == THREADSTATUS_WAIT_ARB);
+        ASSERT(thread->status == ThreadStatus::WaitArb);
         thread->arb_wait_address = 0;
     }
 
@@ -178,28 +177,28 @@ void Thread::ResumeFromWait() {
     ASSERT_MSG(wait_objects.empty(), "Thread is waking up while waiting for objects");
 
     switch (status) {
-    case THREADSTATUS_WAIT_SYNCH_ALL:
-    case THREADSTATUS_WAIT_SYNCH_ANY:
-    case THREADSTATUS_WAIT_HLE_EVENT:
-    case THREADSTATUS_WAIT_SLEEP:
-    case THREADSTATUS_WAIT_IPC:
-    case THREADSTATUS_WAIT_MUTEX:
-    case THREADSTATUS_WAIT_ARB:
+    case ThreadStatus::WaitSynchAll:
+    case ThreadStatus::WaitSynchAny:
+    case ThreadStatus::WaitHLEEvent:
+    case ThreadStatus::WaitSleep:
+    case ThreadStatus::WaitIPC:
+    case ThreadStatus::WaitMutex:
+    case ThreadStatus::WaitArb:
         break;
 
-    case THREADSTATUS_READY:
+    case ThreadStatus::Ready:
         // The thread's wakeup callback must have already been cleared when the thread was first
         // awoken.
         ASSERT(wakeup_callback == nullptr);
         // If the thread is waiting on multiple wait objects, it might be awoken more than once
         // before actually resuming. We can ignore subsequent wakeups if the thread status has
-        // already been set to THREADSTATUS_READY.
+        // already been set to ThreadStatus::Ready.
         return;
 
-    case THREADSTATUS_RUNNING:
+    case ThreadStatus::Running:
         DEBUG_ASSERT_MSG(false, "Thread with object id {} has already resumed.", GetObjectId());
         return;
-    case THREADSTATUS_DEAD:
+    case ThreadStatus::Dead:
         // This should never happen, as threads must complete before being stopped.
         DEBUG_ASSERT_MSG(false, "Thread with object id {} cannot be resumed because it's DEAD.",
                          GetObjectId());
@@ -208,7 +207,7 @@ void Thread::ResumeFromWait() {
 
     wakeup_callback = nullptr;
 
-    status = THREADSTATUS_READY;
+    status = ThreadStatus::Ready;
 
     boost::optional<s32> new_processor_id = GetNextProcessorId(affinity_mask);
     if (!new_processor_id) {
@@ -310,9 +309,10 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
     SharedPtr<Thread> thread(new Thread);
 
     thread->thread_id = NewThreadId();
-    thread->status = THREADSTATUS_DORMANT;
+    thread->status = ThreadStatus::Dormant;
     thread->entry_point = entry_point;
     thread->stack_top = stack_top;
+    thread->tpidr_el0 = 0;
     thread->nominal_priority = thread->current_priority = priority;
     thread->last_running_ticks = CoreTiming::GetTicks();
     thread->processor_id = processor_id;
@@ -471,7 +471,7 @@ void Thread::ChangeCore(u32 core, u64 mask) {
     ideal_core = core;
     affinity_mask = mask;
 
-    if (status != THREADSTATUS_READY) {
+    if (status != ThreadStatus::Ready) {
         return;
     }
 

src/core/hle/kernel/thread.h

@@ -36,18 +36,18 @@ enum ThreadProcessorId : s32 {
                                      (1 << THREADPROCESSORID_2) | (1 << THREADPROCESSORID_3)
 };
 
-enum ThreadStatus {
-    THREADSTATUS_RUNNING,        ///< Currently running
-    THREADSTATUS_READY,          ///< Ready to run
-    THREADSTATUS_WAIT_HLE_EVENT, ///< Waiting for hle event to finish
-    THREADSTATUS_WAIT_SLEEP,     ///< Waiting due to a SleepThread SVC
-    THREADSTATUS_WAIT_IPC,       ///< Waiting for the reply from an IPC request
-    THREADSTATUS_WAIT_SYNCH_ANY, ///< Waiting due to WaitSynch1 or WaitSynchN with wait_all = false
-    THREADSTATUS_WAIT_SYNCH_ALL, ///< Waiting due to WaitSynchronizationN with wait_all = true
-    THREADSTATUS_WAIT_MUTEX,     ///< Waiting due to an ArbitrateLock/WaitProcessWideKey svc
-    THREADSTATUS_WAIT_ARB,       ///< Waiting due to a SignalToAddress/WaitForAddress svc
-    THREADSTATUS_DORMANT,        ///< Created but not yet made ready
-    THREADSTATUS_DEAD            ///< Run to completion, or forcefully terminated
+enum class ThreadStatus {
+    Running,      ///< Currently running
+    Ready,        ///< Ready to run
+    WaitHLEEvent, ///< Waiting for hle event to finish
+    WaitSleep,    ///< Waiting due to a SleepThread SVC
+    WaitIPC,      ///< Waiting for the reply from an IPC request
+    WaitSynchAny, ///< Waiting due to WaitSynch1 or WaitSynchN with wait_all = false
+    WaitSynchAll, ///< Waiting due to WaitSynchronizationN with wait_all = true
+    WaitMutex,    ///< Waiting due to an ArbitrateLock/WaitProcessWideKey svc
+    WaitArb,      ///< Waiting due to a SignalToAddress/WaitForAddress svc
+    Dormant,      ///< Created but not yet made ready
+    Dead          ///< Run to completion, or forcefully terminated
 };
 
 enum class ThreadWakeupReason {
@@ -182,6 +182,14 @@ public:
         return tls_address;
     }
 
+    /*
+     * Returns the value of the TPIDR_EL0 Read/Write system register for this thread.
+     * @returns The value of the TPIDR_EL0 register.
+     */
+    u64 GetTPIDR_EL0() const {
+        return tpidr_el0;
+    }
+
     /*
      * Returns the address of the current thread's command buffer, located in the TLS.
      * @returns VAddr of the thread's command buffer.
@@ -194,14 +202,14 @@ public:
      * with wait_all = true.
      */
     bool IsSleepingOnWaitAll() const {
-        return status == THREADSTATUS_WAIT_SYNCH_ALL;
+        return status == ThreadStatus::WaitSynchAll;
     }
 
     ARM_Interface::ThreadContext context;
 
     u32 thread_id;
 
-    u32 status;
+    ThreadStatus status;
     VAddr entry_point;
     VAddr stack_top;
 
@@ -213,6 +221,7 @@ public:
     s32 processor_id;
 
     VAddr tls_address; ///< Virtual address of the Thread Local Storage of the thread
+    u64 tpidr_el0;     ///< TPIDR_EL0 read/write system register.
 
     SharedPtr<Process> owner_process; ///< Process that owns this thread
 

src/core/hle/kernel/wait_object.cpp

@@ -5,7 +5,6 @@
 #include <algorithm>
 #include "common/assert.h"
 #include "common/logging/log.h"
-#include "core/hle/config_mem.h"
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory.h"
@@ -13,7 +12,6 @@
 #include "core/hle/kernel/resource_limit.h"
 #include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/timer.h"
-#include "core/hle/shared_page.h"
 
 namespace Kernel {
 
@@ -38,9 +36,9 @@ SharedPtr<Thread> WaitObject::GetHighestPriorityReadyThread() {
 
     for (const auto& thread : waiting_threads) {
         // The list of waiting threads must not contain threads that are not waiting to be awakened.
-        ASSERT_MSG(thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
-                       thread->status == THREADSTATUS_WAIT_SYNCH_ALL ||
-                       thread->status == THREADSTATUS_WAIT_HLE_EVENT,
+        ASSERT_MSG(thread->status == ThreadStatus::WaitSynchAny ||
+                       thread->status == ThreadStatus::WaitSynchAll ||
+                       thread->status == ThreadStatus::WaitHLEEvent,
                    "Inconsistent thread statuses in waiting_threads");
 
         if (thread->current_priority >= candidate_priority)
@@ -49,10 +47,10 @@ SharedPtr<Thread> WaitObject::GetHighestPriorityReadyThread() {
         if (ShouldWait(thread.get()))
             continue;
 
-        // A thread is ready to run if it's either in THREADSTATUS_WAIT_SYNCH_ANY or
-        // in THREADSTATUS_WAIT_SYNCH_ALL and the rest of the objects it is waiting on are ready.
+        // A thread is ready to run if it's either in ThreadStatus::WaitSynchAny or
+        // in ThreadStatus::WaitSynchAll and the rest of the objects it is waiting on are ready.
         bool ready_to_run = true;
-        if (thread->status == THREADSTATUS_WAIT_SYNCH_ALL) {
+        if (thread->status == ThreadStatus::WaitSynchAll) {
             ready_to_run = std::none_of(thread->wait_objects.begin(), thread->wait_objects.end(),
                                         [&thread](const SharedPtr<WaitObject>& object) {
                                             return object->ShouldWait(thread.get());

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

@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <array>
 #include "common/logging/log.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/service/acc/acc.h"
@@ -24,18 +25,17 @@ struct UserData {
 static_assert(sizeof(UserData) == 0x80, "UserData structure has incorrect size");
 
 struct ProfileBase {
-    u8 user_id[0x10];
+    u128 user_id;
     u64 timestamp;
-    u8 username[0x20];
+    std::array<u8, 0x20> username;
 };
 static_assert(sizeof(ProfileBase) == 0x38, "ProfileBase structure has incorrect size");
 
-using Uid = std::array<u64, 2>;
-static constexpr Uid DEFAULT_USER_ID{0x10ull, 0x20ull};
+static constexpr u128 DEFAULT_USER_ID{1ull, 0ull};
 
 class IProfile final : public ServiceFramework<IProfile> {
 public:
-    IProfile() : ServiceFramework("IProfile") {
+    IProfile(u128 user_id) : ServiceFramework("IProfile"), user_id(user_id) {
         static const FunctionInfo functions[] = {
             {0, nullptr, "Get"},
             {1, &IProfile::GetBase, "GetBase"},
@@ -48,11 +48,18 @@ public:
 private:
     void GetBase(Kernel::HLERequestContext& ctx) {
         LOG_WARNING(Service_ACC, "(STUBBED) called");
+
+        // TODO(Subv): Retrieve this information from somewhere.
         ProfileBase profile_base{};
+        profile_base.user_id = user_id;
+        profile_base.username = {'y', 'u', 'z', 'u'};
+
         IPC::ResponseBuilder rb{ctx, 16};
         rb.Push(RESULT_SUCCESS);
         rb.PushRaw(profile_base);
     }
+
+    u128 user_id; ///< The user id this profile refers to.
 };
 
 class IManagerForApplication final : public ServiceFramework<IManagerForApplication> {
@@ -75,14 +82,16 @@ private:
         LOG_WARNING(Service_ACC, "(STUBBED) called");
         IPC::ResponseBuilder rb{ctx, 3};
         rb.Push(RESULT_SUCCESS);
-        rb.Push(true); // TODO: Check when this is supposed to return true and when not
+        rb.Push(false); // TODO: Check when this is supposed to return true and when not
     }
 
     void GetAccountId(Kernel::HLERequestContext& ctx) {
         LOG_WARNING(Service_ACC, "(STUBBED) called");
-        IPC::ResponseBuilder rb{ctx, 4};
-        rb.Push(RESULT_SUCCESS);
-        rb.Push<u64>(0x12345678ABCDEF);
+        // TODO(Subv): Find out what this actually does and implement it. Stub it as an error for
+        // now since we do not implement NNID. Returning a bogus id here will cause games to send
+        // invalid IPC requests after ListOpenUsers is called.
+        IPC::ResponseBuilder rb{ctx, 2};
+        rb.Push(ResultCode(-1));
     }
 };
 
@@ -95,25 +104,29 @@ void Module::Interface::GetUserExistence(Kernel::HLERequestContext& ctx) {
 
 void Module::Interface::ListAllUsers(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service_ACC, "(STUBBED) called");
-    constexpr std::array<u128, 10> user_ids{DEFAULT_USER_ID};
-    ctx.WriteBuffer(user_ids.data(), user_ids.size());
+    // TODO(Subv): There is only one user for now.
+    const std::vector<u128> user_ids = {DEFAULT_USER_ID};
+    ctx.WriteBuffer(user_ids);
     IPC::ResponseBuilder rb{ctx, 2};
     rb.Push(RESULT_SUCCESS);
 }
 
 void Module::Interface::ListOpenUsers(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service_ACC, "(STUBBED) called");
-    constexpr std::array<u128, 10> user_ids{DEFAULT_USER_ID};
-    ctx.WriteBuffer(user_ids.data(), user_ids.size());
+    // TODO(Subv): There is only one user for now.
+    const std::vector<u128> user_ids = {DEFAULT_USER_ID};
+    ctx.WriteBuffer(user_ids);
     IPC::ResponseBuilder rb{ctx, 2};
     rb.Push(RESULT_SUCCESS);
 }
 
 void Module::Interface::GetProfile(Kernel::HLERequestContext& ctx) {
+    IPC::RequestParser rp{ctx};
+    u128 user_id = rp.PopRaw<u128>();
     IPC::ResponseBuilder rb{ctx, 2, 0, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushIpcInterface<IProfile>();
-    LOG_DEBUG(Service_ACC, "called");
+    rb.PushIpcInterface<IProfile>(user_id);
+    LOG_DEBUG(Service_ACC, "called user_id=0x{:016X}{:016X}", user_id[1], user_id[0]);
 }
 
 void Module::Interface::InitializeApplicationInfo(Kernel::HLERequestContext& ctx) {

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

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void GetUserExistence(Kernel::HLERequestContext& ctx);
         void ListAllUsers(Kernel::HLERequestContext& ctx);

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

@@ -72,7 +72,7 @@ public:
 
 class ISelfController final : public ServiceFramework<ISelfController> {
 public:
-    ISelfController(std::shared_ptr<NVFlinger::NVFlinger> nvflinger);
+    explicit ISelfController(std::shared_ptr<NVFlinger::NVFlinger> nvflinger);
 
 private:
     void SetFocusHandlingMode(Kernel::HLERequestContext& ctx);

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

@@ -12,7 +12,7 @@ namespace Service::AM {
 
 class ILibraryAppletProxy final : public ServiceFramework<ILibraryAppletProxy> {
 public:
-    ILibraryAppletProxy(std::shared_ptr<NVFlinger::NVFlinger> nvflinger)
+    explicit ILibraryAppletProxy(std::shared_ptr<NVFlinger::NVFlinger> nvflinger)
         : ServiceFramework("ILibraryAppletProxy"), nvflinger(std::move(nvflinger)) {
         static const FunctionInfo functions[] = {
             {0, &ILibraryAppletProxy::GetCommonStateGetter, "GetCommonStateGetter"},

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

@@ -17,7 +17,7 @@ namespace AM {
 
 class AppletAE final : public ServiceFramework<AppletAE> {
 public:
-    AppletAE(std::shared_ptr<NVFlinger::NVFlinger> nvflinger);
+    explicit AppletAE(std::shared_ptr<NVFlinger::NVFlinger> nvflinger);
     ~AppletAE() = default;
 
 private:

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

@@ -12,7 +12,7 @@ namespace Service::AM {
 
 class IApplicationProxy final : public ServiceFramework<IApplicationProxy> {
 public:
-    IApplicationProxy(std::shared_ptr<NVFlinger::NVFlinger> nvflinger)
+    explicit IApplicationProxy(std::shared_ptr<NVFlinger::NVFlinger> nvflinger)
         : ServiceFramework("IApplicationProxy"), nvflinger(std::move(nvflinger)) {
         static const FunctionInfo functions[] = {
             {0, &IApplicationProxy::GetCommonStateGetter, "GetCommonStateGetter"},

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

@@ -17,7 +17,7 @@ namespace AM {
 
 class AppletOE final : public ServiceFramework<AppletOE> {
 public:
-    AppletOE(std::shared_ptr<NVFlinger::NVFlinger> nvflinger);
+    explicit AppletOE(std::shared_ptr<NVFlinger::NVFlinger> nvflinger);
     ~AppletOE() = default;
 
 private:

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

@@ -20,6 +20,21 @@ public:
     }
 
 private:
+    enum class PerformanceConfiguration : u32 {
+        Config1 = 0x00010000,
+        Config2 = 0x00010001,
+        Config3 = 0x00010002,
+        Config4 = 0x00020000,
+        Config5 = 0x00020001,
+        Config6 = 0x00020002,
+        Config7 = 0x00020003,
+        Config8 = 0x00020004,
+        Config9 = 0x00020005,
+        Config10 = 0x00020006,
+        Config11 = 0x92220007,
+        Config12 = 0x92220008,
+    };
+
     void SetPerformanceConfiguration(Kernel::HLERequestContext& ctx) {
         IPC::RequestParser rp{ctx};
 
@@ -40,7 +55,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 3};
         rb.Push(RESULT_SUCCESS);
-        rb.Push<u32>(0); // Performance configuration
+        rb.Push<u32>(static_cast<u32>(PerformanceConfiguration::Config1));
 
         LOG_WARNING(Service_APM, "(STUBBED) called mode={}", static_cast<u32>(mode));
     }

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

@@ -10,7 +10,7 @@ namespace Service::APM {
 
 class APM final : public ServiceFramework<APM> {
 public:
-    APM(std::shared_ptr<Module> apm, const char* name);
+    explicit APM(std::shared_ptr<Module> apm, const char* name);
     ~APM() = default;
 
 private:
@@ -19,7 +19,4 @@ private:
     std::shared_ptr<Module> apm;
 };
 
-/// Registers all AM services with the specified service manager.
-void InstallInterfaces(SM::ServiceManager& service_manager);
-
 } // namespace Service::APM

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

@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <array>
 #include <vector>
 #include "common/logging/log.h"
 #include "core/core_timing.h"
@@ -167,8 +168,8 @@ void AudOutU::ListAudioOutsImpl(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service_Audio, "(STUBBED) called");
     IPC::RequestParser rp{ctx};
 
-    const std::string audio_interface = "AudioInterface";
-    ctx.WriteBuffer(audio_interface.c_str(), audio_interface.size());
+    constexpr std::array<char, 15> audio_interface{{"AudioInterface"}};
+    ctx.WriteBuffer(audio_interface);
 
     IPC::ResponseBuilder rb = rp.MakeBuilder(3, 0, 0);
 

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

@@ -2,6 +2,8 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <array>
+
 #include "common/alignment.h"
 #include "common/logging/log.h"
 #include "core/core_timing.h"
@@ -17,7 +19,7 @@ constexpr u64 audio_ticks{static_cast<u64>(CoreTiming::BASE_CLOCK_RATE / 200)};
 
 class IAudioRenderer final : public ServiceFramework<IAudioRenderer> {
 public:
-    IAudioRenderer(AudioRendererParameter audren_params)
+    explicit IAudioRenderer(AudioRendererParameter audren_params)
         : ServiceFramework("IAudioRenderer"), worker_params(audren_params) {
         static const FunctionInfo functions[] = {
             {0, nullptr, "GetAudioRendererSampleRate"},
@@ -176,7 +178,7 @@ private:
     struct UpdateDataHeader {
         UpdateDataHeader() {}
 
-        UpdateDataHeader(const AudioRendererParameter& config) {
+        explicit UpdateDataHeader(const AudioRendererParameter& config) {
             revision = Common::MakeMagic('R', 'E', 'V', '4'); // 5.1.0 Revision
             behavior_size = 0xb0;
             memory_pools_size = (config.effect_count + (config.voice_count * 4)) * 0x10;
@@ -298,8 +300,8 @@ private:
         LOG_WARNING(Service_Audio, "(STUBBED) called");
         IPC::RequestParser rp{ctx};
 
-        const std::string audio_interface = "AudioInterface";
-        ctx.WriteBuffer(audio_interface.c_str(), audio_interface.size());
+        constexpr std::array<char, 15> audio_interface{{"AudioInterface"}};
+        ctx.WriteBuffer(audio_interface);
 
         IPC::ResponseBuilder rb = rp.MakeBuilder(3, 0, 0);
         rb.Push(RESULT_SUCCESS);
@@ -323,8 +325,8 @@ private:
         LOG_WARNING(Service_Audio, "(STUBBED) called");
         IPC::RequestParser rp{ctx};
 
-        const std::string audio_interface = "AudioDevice";
-        ctx.WriteBuffer(audio_interface.c_str(), audio_interface.size());
+        constexpr std::array<char, 12> audio_interface{{"AudioDevice"}};
+        ctx.WriteBuffer(audio_interface);
 
         IPC::ResponseBuilder rb = rp.MakeBuilder(3, 0, 0);
         rb.Push(RESULT_SUCCESS);

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

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void CreateBcatService(Kernel::HLERequestContext& ctx);
 

src/core/hle/service/fatal/fatal.h

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void ThrowFatalWithPolicy(Kernel::HLERequestContext& ctx);
         void ThrowFatalWithCpuContext(Kernel::HLERequestContext& ctx);

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

@@ -2,7 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
-#pragma optimize("", off)
+#include <utility>
 
 #include "common/assert.h"
 #include "common/file_util.h"
@@ -24,21 +24,23 @@ namespace Service::FileSystem {
 constexpr u64 EMULATED_SD_REPORTED_SIZE = 32000000000;
 
 static FileSys::VirtualDir GetDirectoryRelativeWrapped(FileSys::VirtualDir base,
-                                                       const std::string& dir_name) {
-    if (dir_name == "." || dir_name == "" || dir_name == "/" || dir_name == "\\")
+                                                       std::string_view dir_name_) {
+    std::string dir_name(FileUtil::SanitizePath(dir_name_));
+    if (dir_name.empty() || dir_name == "." || dir_name == "/" || dir_name == "\\")
         return base;
 
     return base->GetDirectoryRelative(dir_name);
 }
 
 VfsDirectoryServiceWrapper::VfsDirectoryServiceWrapper(FileSys::VirtualDir backing_)
-    : backing(backing_) {}
+    : backing(std::move(backing_)) {}
 
 std::string VfsDirectoryServiceWrapper::GetName() const {
     return backing->GetName();
 }
 
-ResultCode VfsDirectoryServiceWrapper::CreateFile(const std::string& path, u64 size) const {
+ResultCode VfsDirectoryServiceWrapper::CreateFile(const std::string& path_, u64 size) const {
+    std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
     auto file = dir->CreateFile(FileUtil::GetFilename(path));
     if (file == nullptr) {
@@ -52,7 +54,8 @@ ResultCode VfsDirectoryServiceWrapper::CreateFile(const std::string& path, u64 s
     return RESULT_SUCCESS;
 }
 
-ResultCode VfsDirectoryServiceWrapper::DeleteFile(const std::string& path) const {
+ResultCode VfsDirectoryServiceWrapper::DeleteFile(const std::string& path_) const {
+    std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
     if (path == "/" || path == "\\") {
         // TODO(DarkLordZach): Why do games call this and what should it do? Works as is but...
@@ -60,14 +63,15 @@ ResultCode VfsDirectoryServiceWrapper::DeleteFile(const std::string& path) const
     }
     if (dir->GetFile(FileUtil::GetFilename(path)) == nullptr)
         return FileSys::ERROR_PATH_NOT_FOUND;
-    if (!backing->DeleteFile(FileUtil::GetFilename(path))) {
+    if (!dir->DeleteFile(FileUtil::GetFilename(path))) {
         // TODO(DarkLordZach): Find a better error code for this
         return ResultCode(-1);
     }
     return RESULT_SUCCESS;
 }
 
-ResultCode VfsDirectoryServiceWrapper::CreateDirectory(const std::string& path) const {
+ResultCode VfsDirectoryServiceWrapper::CreateDirectory(const std::string& path_) const {
+    std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
     if (dir == nullptr && FileUtil::GetFilename(FileUtil::GetParentPath(path)).empty())
         dir = backing;
@@ -79,7 +83,8 @@ ResultCode VfsDirectoryServiceWrapper::CreateDirectory(const std::string& path)
     return RESULT_SUCCESS;
 }
 
-ResultCode VfsDirectoryServiceWrapper::DeleteDirectory(const std::string& path) const {
+ResultCode VfsDirectoryServiceWrapper::DeleteDirectory(const std::string& path_) const {
+    std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
     if (!dir->DeleteSubdirectory(FileUtil::GetFilename(path))) {
         // TODO(DarkLordZach): Find a better error code for this
@@ -88,7 +93,8 @@ ResultCode VfsDirectoryServiceWrapper::DeleteDirectory(const std::string& path)
     return RESULT_SUCCESS;
 }
 
-ResultCode VfsDirectoryServiceWrapper::DeleteDirectoryRecursively(const std::string& path) const {
+ResultCode VfsDirectoryServiceWrapper::DeleteDirectoryRecursively(const std::string& path_) const {
+    std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
     if (!dir->DeleteSubdirectoryRecursive(FileUtil::GetFilename(path))) {
         // TODO(DarkLordZach): Find a better error code for this
@@ -97,8 +103,10 @@ ResultCode VfsDirectoryServiceWrapper::DeleteDirectoryRecursively(const std::str
     return RESULT_SUCCESS;
 }
 
-ResultCode VfsDirectoryServiceWrapper::RenameFile(const std::string& src_path,
-                                                  const std::string& dest_path) const {
+ResultCode VfsDirectoryServiceWrapper::RenameFile(const std::string& src_path_,
+                                                  const std::string& dest_path_) const {
+    std::string src_path(FileUtil::SanitizePath(src_path_));
+    std::string dest_path(FileUtil::SanitizePath(dest_path_));
     auto src = backing->GetFileRelative(src_path);
     if (FileUtil::GetParentPath(src_path) == FileUtil::GetParentPath(dest_path)) {
         // Use more-optimized vfs implementation rename.
@@ -130,8 +138,10 @@ ResultCode VfsDirectoryServiceWrapper::RenameFile(const std::string& src_path,
     return RESULT_SUCCESS;
 }
 
-ResultCode VfsDirectoryServiceWrapper::RenameDirectory(const std::string& src_path,
-                                                       const std::string& dest_path) const {
+ResultCode VfsDirectoryServiceWrapper::RenameDirectory(const std::string& src_path_,
+                                                       const std::string& dest_path_) const {
+    std::string src_path(FileUtil::SanitizePath(src_path_));
+    std::string dest_path(FileUtil::SanitizePath(dest_path_));
     auto src = GetDirectoryRelativeWrapped(backing, src_path);
     if (FileUtil::GetParentPath(src_path) == FileUtil::GetParentPath(dest_path)) {
         // Use more-optimized vfs implementation rename.
@@ -154,8 +164,9 @@ ResultCode VfsDirectoryServiceWrapper::RenameDirectory(const std::string& src_pa
     return ResultCode(-1);
 }
 
-ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::string& path,
+ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::string& path_,
                                                                      FileSys::Mode mode) const {
+    std::string path(FileUtil::SanitizePath(path_));
     auto npath = path;
     while (npath.size() > 0 && (npath[0] == '/' || npath[0] == '\\'))
         npath = npath.substr(1);
@@ -171,7 +182,8 @@ ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::
     return MakeResult<FileSys::VirtualFile>(file);
 }
 
-ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const std::string& path) {
+ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const std::string& path_) {
+    std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, path);
     if (dir == nullptr) {
         // TODO(DarkLordZach): Find a better error code for this
@@ -188,11 +200,16 @@ u64 VfsDirectoryServiceWrapper::GetFreeSpaceSize() const {
 }
 
 ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
-    const std::string& path) const {
+    const std::string& path_) const {
+    std::string path(FileUtil::SanitizePath(path_));
     auto dir = GetDirectoryRelativeWrapped(backing, FileUtil::GetParentPath(path));
     if (dir == nullptr)
         return FileSys::ERROR_PATH_NOT_FOUND;
     auto filename = FileUtil::GetFilename(path);
+    // TODO(Subv): Some games use the '/' path, find out what this means.
+    if (filename.empty())
+        return MakeResult(FileSys::EntryType::Directory);
+
     if (dir->GetFile(filename) != nullptr)
         return MakeResult(FileSys::EntryType::File);
     if (dir->GetSubdirectory(filename) != nullptr)
@@ -268,9 +285,9 @@ void RegisterFileSystems() {
     sdmc_factory = nullptr;
 
     auto nand_directory = std::make_shared<FileSys::RealVfsDirectory>(
-        FileUtil::GetUserPath(D_NAND_IDX), FileSys::Mode::Write);
+        FileUtil::GetUserPath(FileUtil::UserPath::NANDDir), FileSys::Mode::ReadWrite);
     auto sd_directory = std::make_shared<FileSys::RealVfsDirectory>(
-        FileUtil::GetUserPath(D_SDMC_IDX), FileSys::Mode::Write);
+        FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir), FileSys::Mode::ReadWrite);
 
     auto savedata = std::make_unique<FileSys::SaveDataFactory>(std::move(nand_directory));
     save_data_factory = std::move(savedata);

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

@@ -3,6 +3,14 @@
 // Refer to the license.txt file included.
 
 #include <cinttypes>
+#include <cstring>
+#include <iterator>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "common/assert.h"
+#include "common/common_types.h"
 #include "common/logging/log.h"
 #include "common/string_util.h"
 #include "core/core.h"
@@ -26,7 +34,7 @@ enum class StorageId : u8 {
 
 class IStorage final : public ServiceFramework<IStorage> {
 public:
-    IStorage(FileSys::VirtualFile backend_)
+    explicit IStorage(FileSys::VirtualFile backend_)
         : ServiceFramework("IStorage"), backend(std::move(backend_)) {
         static const FunctionInfo functions[] = {
             {0, &IStorage::Read, "Read"}, {1, nullptr, "Write"},   {2, nullptr, "Flush"},
@@ -133,19 +141,19 @@ private:
             return;
         }
 
-        std::vector<u8> data = ctx.ReadBuffer();
-        std::vector<u8> actual_data(length);
+        const std::vector<u8> data = ctx.ReadBuffer();
 
         ASSERT_MSG(
-            data.size() <= length,
+            static_cast<s64>(data.size()) <= length,
             "Attempting to write more data than requested (requested={:016X}, actual={:016X}).",
             length, data.size());
 
-        std::copy(data.begin(), data.end(), actual_data.begin());
         // Write the data to the Storage backend
-        auto written = backend->WriteBytes(data, offset);
+        const auto write_size =
+            static_cast<std::size_t>(std::distance(data.begin(), data.begin() + length));
+        const std::size_t written = backend->Write(data.data(), write_size, offset);
 
-        ASSERT_MSG(written == length,
+        ASSERT_MSG(static_cast<s64>(written) == length,
                    "Could not write all bytes to file (requested={:016X}, actual={:016X}).", length,
                    written);
 
@@ -223,23 +231,20 @@ private:
         LOG_DEBUG(Service_FS, "called, unk=0x{:X}", unk);
 
         // Calculate how many entries we can fit in the output buffer
-        u64 count_entries = ctx.GetWriteBufferSize() / sizeof(FileSys::Entry);
+        const u64 count_entries = ctx.GetWriteBufferSize() / sizeof(FileSys::Entry);
 
         // Cap at total number of entries.
-        u64 actual_entries = std::min(count_entries, entries.size() - next_entry_index);
+        const u64 actual_entries = std::min(count_entries, entries.size() - next_entry_index);
 
-        // Read the data from the Directory backend
-        std::vector<FileSys::Entry> entry_data(entries.begin() + next_entry_index,
-                                               entries.begin() + next_entry_index + actual_entries);
+        // Determine data start and end
+        const auto* begin = reinterpret_cast<u8*>(entries.data() + next_entry_index);
+        const auto* end = reinterpret_cast<u8*>(entries.data() + next_entry_index + actual_entries);
+        const auto range_size = static_cast<std::size_t>(std::distance(begin, end));
 
         next_entry_index += actual_entries;
 
-        // Convert the data into a byte array
-        std::vector<u8> output(entry_data.size() * sizeof(FileSys::Entry));
-        std::memcpy(output.data(), entry_data.data(), output.size());
-
         // Write the data to memory
-        ctx.WriteBuffer(output);
+        ctx.WriteBuffer(begin, range_size);
 
         IPC::ResponseBuilder rb{ctx, 4};
         rb.Push(RESULT_SUCCESS);

src/core/hle/service/friend/friend.h

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void CreateFriendService(Kernel::HLERequestContext& ctx);
 

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

@@ -85,8 +85,7 @@ private:
         controller_header.left_color_buttons = JOYCON_BUTTONS_NEON_BLUE;
 
         for (size_t controller = 0; controller < mem.controllers.size(); controller++) {
-            for (int index = 0; index < HID_NUM_LAYOUTS; index++) {
-                ControllerLayout& layout = mem.controllers[controller].layouts[index];
+            for (auto& layout : mem.controllers[controller].layouts) {
                 layout.header.num_entries = HID_NUM_ENTRIES;
                 layout.header.max_entry_index = HID_NUM_ENTRIES - 1;
 
@@ -213,8 +212,7 @@ private:
         keyboard.entries[curr_keyboard_entry].timestamp_2 = keyboard_sample_counter;
 
         // TODO(shinyquagsire23): Figure out what any of these are
-        for (size_t i = 0; i < mem.unk_input_1.size(); i++) {
-            UnkInput1& input = mem.unk_input_1[i];
+        for (auto& input : mem.unk_input_1) {
             const u64 last_input_entry = input.header.latest_entry;
             const u64 curr_input_entry = (input.header.latest_entry + 1) % input.entries.size();
             const u64 input_sample_counter = input.entries[last_input_entry].timestamp + 1;
@@ -228,9 +226,7 @@ private:
             input.entries[curr_input_entry].timestamp_2 = input_sample_counter;
         }
 
-        for (size_t i = 0; i < mem.unk_input_2.size(); i++) {
-            UnkInput2& input = mem.unk_input_2[i];
-
+        for (auto& input : mem.unk_input_2) {
             input.header.timestamp_ticks = timestamp;
             input.header.num_entries = 17;
             input.header.latest_entry = 0;

src/core/hle/service/hid/hid.h

@@ -380,7 +380,7 @@ static_assert(sizeof(ControllerLayout) == 0x350,
 
 struct Controller {
     ControllerHeader header;
-    std::array<ControllerLayout, 7> layouts;
+    std::array<ControllerLayout, HID_NUM_LAYOUTS> layouts;
     std::array<u8, 0x2a70> unk_1;
     ControllerMAC mac_left;
     ControllerMAC mac_right;

src/core/hle/service/nfp/nfp.h

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void CreateUserInterface(Kernel::HLERequestContext& ctx);
 

src/core/hle/service/nifm/nifm.h

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void CreateGeneralServiceOld(Kernel::HLERequestContext& ctx);
         void CreateGeneralService(Kernel::HLERequestContext& ctx);

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

@@ -42,7 +42,7 @@ PL_U::PL_U() : ServiceFramework("pl:u") {
     RegisterHandlers(functions);
 
     // Attempt to load shared font data from disk
-    const std::string filepath{FileUtil::GetUserPath(D_SYSDATA_IDX) + SHARED_FONT};
+    const std::string filepath{FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir) + SHARED_FONT};
     FileUtil::CreateFullPath(filepath); // Create path if not already created
     FileUtil::IOFile file(filepath, "rb");
 
@@ -119,7 +119,7 @@ void PL_U::GetSharedMemoryNativeHandle(Kernel::HLERequestContext& ctx) {
 void PL_U::GetSharedFontInOrderOfPriority(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
     const u64 language_code{rp.Pop<u64>()}; // TODO(ogniK): Find out what this is used for
-    LOG_DEBUG(Service_NS, "called, language_code=%lx", language_code);
+    LOG_DEBUG(Service_NS, "called, language_code={:X}", language_code);
     IPC::ResponseBuilder rb{ctx, 4};
     std::vector<u32> font_codes;
     std::vector<u32> font_offsets;
@@ -132,9 +132,9 @@ void PL_U::GetSharedFontInOrderOfPriority(Kernel::HLERequestContext& ctx) {
         font_sizes.push_back(SHARED_FONT_REGIONS[i].size);
     }
 
-    ctx.WriteBuffer(font_codes.data(), font_codes.size(), 0);
-    ctx.WriteBuffer(font_offsets.data(), font_offsets.size(), 1);
-    ctx.WriteBuffer(font_sizes.data(), font_sizes.size(), 2);
+    ctx.WriteBuffer(font_codes, 0);
+    ctx.WriteBuffer(font_offsets, 1);
+    ctx.WriteBuffer(font_sizes, 2);
 
     rb.Push(RESULT_SUCCESS);
     rb.Push<u8>(static_cast<u8>(LoadState::Done)); // Fonts Loaded

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

@@ -17,7 +17,7 @@ class nvmap;
 
 class nvdisp_disp0 final : public nvdevice {
 public:
-    nvdisp_disp0(std::shared_ptr<nvmap> nvmap_dev) : nvdevice(), nvmap_dev(std::move(nvmap_dev)) {}
+    explicit nvdisp_disp0(std::shared_ptr<nvmap> nvmap_dev) : nvmap_dev(std::move(nvmap_dev)) {}
     ~nvdisp_disp0() = default;
 
     u32 ioctl(Ioctl command, const std::vector<u8>& input, std::vector<u8>& output) override;

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

@@ -18,7 +18,7 @@ class nvmap;
 
 class nvhost_as_gpu final : public nvdevice {
 public:
-    nvhost_as_gpu(std::shared_ptr<nvmap> nvmap_dev) : nvmap_dev(std::move(nvmap_dev)) {}
+    explicit nvhost_as_gpu(std::shared_ptr<nvmap> nvmap_dev) : nvmap_dev(std::move(nvmap_dev)) {}
     ~nvhost_as_gpu() override = default;
 
     u32 ioctl(Ioctl command, const std::vector<u8>& input, std::vector<u8>& output) override;

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

@@ -42,6 +42,9 @@ u32 nvhost_gpu::ioctl(Ioctl command, const std::vector<u8>& input, std::vector<u
         if (command.cmd == NVGPU_IOCTL_CHANNEL_SUBMIT_GPFIFO) {
             return SubmitGPFIFO(input, output);
         }
+        if (command.cmd == NVGPU_IOCTL_CHANNEL_KICKOFF_PB) {
+            return KickoffPB(input, output);
+        }
     }
 
     UNIMPLEMENTED_MSG("Unimplemented ioctl");
@@ -127,14 +130,37 @@ u32 nvhost_gpu::SubmitGPFIFO(const std::vector<u8>& input, std::vector<u8>& outp
     IoctlSubmitGpfifo params{};
     std::memcpy(&params, input.data(), sizeof(IoctlSubmitGpfifo));
     LOG_WARNING(Service_NVDRV, "(STUBBED) called, gpfifo={:X}, num_entries={:X}, flags={:X}",
-                params.gpfifo, params.num_entries, params.flags);
+                params.address, params.num_entries, params.flags);
 
     auto entries = std::vector<IoctlGpfifoEntry>();
     entries.resize(params.num_entries);
     std::memcpy(&entries[0], &input.data()[sizeof(IoctlSubmitGpfifo)],
                 params.num_entries * sizeof(IoctlGpfifoEntry));
     for (auto entry : entries) {
-        VAddr va_addr = entry.Address();
+        Tegra::GPUVAddr va_addr = entry.Address();
+        Core::System::GetInstance().GPU().ProcessCommandList(va_addr, entry.sz);
+    }
+    params.fence_out.id = 0;
+    params.fence_out.value = 0;
+    std::memcpy(output.data(), &params, output.size());
+    return 0;
+}
+
+u32 nvhost_gpu::KickoffPB(const std::vector<u8>& input, std::vector<u8>& output) {
+    if (input.size() < sizeof(IoctlSubmitGpfifo)) {
+        UNIMPLEMENTED();
+    }
+    IoctlSubmitGpfifo params{};
+    std::memcpy(&params, input.data(), sizeof(IoctlSubmitGpfifo));
+    LOG_WARNING(Service_NVDRV, "(STUBBED) called, gpfifo={:X}, num_entries={:X}, flags={:X}",
+                params.address, params.num_entries, params.flags);
+
+    std::vector<IoctlGpfifoEntry> entries(params.num_entries);
+    Memory::ReadBlock(params.address, entries.data(),
+                      params.num_entries * sizeof(IoctlGpfifoEntry));
+
+    for (auto entry : entries) {
+        Tegra::GPUVAddr va_addr = entry.Address();
         Core::System::GetInstance().GPU().ProcessCommandList(va_addr, entry.sz);
     }
     params.fence_out.id = 0;

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

@@ -15,10 +15,11 @@ namespace Service::Nvidia::Devices {
 class nvmap;
 constexpr u32 NVGPU_IOCTL_MAGIC('H');
 constexpr u32 NVGPU_IOCTL_CHANNEL_SUBMIT_GPFIFO(0x8);
+constexpr u32 NVGPU_IOCTL_CHANNEL_KICKOFF_PB(0x1b);
 
 class nvhost_gpu final : public nvdevice {
 public:
-    nvhost_gpu(std::shared_ptr<nvmap> nvmap_dev) : nvmap_dev(std::move(nvmap_dev)) {}
+    explicit nvhost_gpu(std::shared_ptr<nvmap> nvmap_dev) : nvmap_dev(std::move(nvmap_dev)) {}
     ~nvhost_gpu() override = default;
 
     u32 ioctl(Ioctl command, const std::vector<u8>& input, std::vector<u8>& output) override;
@@ -158,14 +159,14 @@ private:
             BitField<31, 1, u32_le> unk2;
         };
 
-        VAddr Address() const {
-            return (static_cast<VAddr>(gpu_va_hi) << 32) | entry0;
+        Tegra::GPUVAddr Address() const {
+            return (static_cast<Tegra::GPUVAddr>(gpu_va_hi) << 32) | entry0;
         }
     };
     static_assert(sizeof(IoctlGpfifoEntry) == 8, "IoctlGpfifoEntry is incorrect size");
 
     struct IoctlSubmitGpfifo {
-        u64_le gpfifo;      // (ignored) pointer to gpfifo fence structs
+        u64_le address;     // pointer to gpfifo entry structs
         u32_le num_entries; // number of fence objects being submitted
         u32_le flags;
         IoctlFence fence_out; // returned new fence object for others to wait on
@@ -193,6 +194,7 @@ private:
     u32 AllocGPFIFOEx2(const std::vector<u8>& input, std::vector<u8>& output);
     u32 AllocateObjectContext(const std::vector<u8>& input, std::vector<u8>& output);
     u32 SubmitGPFIFO(const std::vector<u8>& input, std::vector<u8>& output);
+    u32 KickoffPB(const std::vector<u8>& input, std::vector<u8>& output);
     u32 GetWaitbase(const std::vector<u8>& input, std::vector<u8>& output);
     u32 ChannelSetTimeout(const std::vector<u8>& input, std::vector<u8>& output);
 

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

@@ -101,7 +101,7 @@ NVDRV::NVDRV(std::shared_ptr<Module> nvdrv, const char* name)
         {8, &NVDRV::SetClientPID, "SetClientPID"},
         {9, nullptr, "DumpGraphicsMemoryInfo"},
         {10, nullptr, "InitializeDevtools"},
-        {11, nullptr, "Ioctl2"},
+        {11, &NVDRV::Ioctl, "Ioctl2"},
         {12, nullptr, "Ioctl3"},
         {13, &NVDRV::FinishInitialize, "FinishInitialize"},
     };

src/core/hle/service/nvflinger/nvflinger.cpp

@@ -23,15 +23,10 @@ constexpr u64 frame_ticks = static_cast<u64>(CoreTiming::BASE_CLOCK_RATE / SCREE
 
 NVFlinger::NVFlinger() {
     // Add the different displays to the list of displays.
-    Display default_{0, "Default"};
-    Display external{1, "External"};
-    Display edid{2, "Edid"};
-    Display internal{3, "Internal"};
-
-    displays.emplace_back(default_);
-    displays.emplace_back(external);
-    displays.emplace_back(edid);
-    displays.emplace_back(internal);
+    displays.emplace_back(0, "Default");
+    displays.emplace_back(1, "External");
+    displays.emplace_back(2, "Edid");
+    displays.emplace_back(3, "Internal");
 
     // Schedule the screen composition events
     composition_event =

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

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void CreateService(Kernel::HLERequestContext& ctx);
         void CreateServiceWithoutInitialize(Kernel::HLERequestContext& ctx);

src/core/hle/service/set/set.cpp

@@ -11,31 +11,40 @@
 
 namespace Service::Set {
 
-void SET::GetAvailableLanguageCodes(Kernel::HLERequestContext& ctx) {
-    static constexpr std::array<LanguageCode, 17> available_language_codes = {{
-        LanguageCode::JA,
-        LanguageCode::EN_US,
-        LanguageCode::FR,
-        LanguageCode::DE,
-        LanguageCode::IT,
-        LanguageCode::ES,
-        LanguageCode::ZH_CN,
-        LanguageCode::KO,
-        LanguageCode::NL,
-        LanguageCode::PT,
-        LanguageCode::RU,
-        LanguageCode::ZH_TW,
-        LanguageCode::EN_GB,
-        LanguageCode::FR_CA,
-        LanguageCode::ES_419,
-        LanguageCode::ZH_HANS,
-        LanguageCode::ZH_HANT,
-    }};
-    ctx.WriteBuffer(available_language_codes.data(), available_language_codes.size());
+constexpr std::array<LanguageCode, 17> available_language_codes = {{
+    LanguageCode::JA,
+    LanguageCode::EN_US,
+    LanguageCode::FR,
+    LanguageCode::DE,
+    LanguageCode::IT,
+    LanguageCode::ES,
+    LanguageCode::ZH_CN,
+    LanguageCode::KO,
+    LanguageCode::NL,
+    LanguageCode::PT,
+    LanguageCode::RU,
+    LanguageCode::ZH_TW,
+    LanguageCode::EN_GB,
+    LanguageCode::FR_CA,
+    LanguageCode::ES_419,
+    LanguageCode::ZH_HANS,
+    LanguageCode::ZH_HANT,
+}};
 
-    IPC::ResponseBuilder rb{ctx, 4};
+void SET::GetAvailableLanguageCodes(Kernel::HLERequestContext& ctx) {
+    ctx.WriteBuffer(available_language_codes);
+
+    IPC::ResponseBuilder rb{ctx, 3};
     rb.Push(RESULT_SUCCESS);
-    rb.Push(static_cast<u64>(available_language_codes.size()));
+    rb.Push(static_cast<u32>(available_language_codes.size()));
+
+    LOG_DEBUG(Service_SET, "called");
+}
+
+void SET::GetAvailableLanguageCodeCount(Kernel::HLERequestContext& ctx) {
+    IPC::ResponseBuilder rb{ctx, 3};
+    rb.Push(RESULT_SUCCESS);
+    rb.Push(static_cast<u32>(available_language_codes.size()));
 
     LOG_DEBUG(Service_SET, "called");
 }
@@ -45,10 +54,10 @@ SET::SET() : ServiceFramework("set") {
         {0, nullptr, "GetLanguageCode"},
         {1, &SET::GetAvailableLanguageCodes, "GetAvailableLanguageCodes"},
         {2, nullptr, "MakeLanguageCode"},
-        {3, nullptr, "GetAvailableLanguageCodeCount"},
+        {3, &SET::GetAvailableLanguageCodeCount, "GetAvailableLanguageCodeCount"},
         {4, nullptr, "GetRegionCode"},
         {5, &SET::GetAvailableLanguageCodes, "GetAvailableLanguageCodes2"},
-        {6, nullptr, "GetAvailableLanguageCodeCount2"},
+        {6, &SET::GetAvailableLanguageCodeCount, "GetAvailableLanguageCodeCount2"},
         {7, nullptr, "GetKeyCodeMap"},
         {8, nullptr, "GetQuestFlag"},
     };

src/core/hle/service/set/set.h

@@ -36,6 +36,7 @@ public:
 
 private:
     void GetAvailableLanguageCodes(Kernel::HLERequestContext& ctx);
+    void GetAvailableLanguageCodeCount(Kernel::HLERequestContext& ctx);
 };
 
 } // namespace Service::Set

src/core/hle/service/sm/sm.h

@@ -22,7 +22,7 @@ namespace Service::SM {
 /// Interface to "sm:" service
 class SM final : public ServiceFramework<SM> {
 public:
-    SM(std::shared_ptr<ServiceManager> service_manager);
+    explicit SM(std::shared_ptr<ServiceManager> service_manager);
     ~SM() override;
 
 private:

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

@@ -12,7 +12,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> module, const char* name);
+        explicit Interface(std::shared_ptr<Module> module, const char* name);
 
         void GetRandomBytes(Kernel::HLERequestContext& ctx);
 

src/core/hle/service/time/time.h

@@ -57,7 +57,7 @@ class Module final {
 public:
     class Interface : public ServiceFramework<Interface> {
     public:
-        Interface(std::shared_ptr<Module> time, const char* name);
+        explicit Interface(std::shared_ptr<Module> time, const char* name);
 
         void GetStandardUserSystemClock(Kernel::HLERequestContext& ctx);
         void GetStandardNetworkSystemClock(Kernel::HLERequestContext& ctx);

src/core/hle/service/vi/vi.cpp

@@ -5,6 +5,8 @@
 #include <algorithm>
 #include <array>
 #include <memory>
+#include <type_traits>
+#include <utility>
 #include <boost/optional.hpp>
 #include "common/alignment.h"
 #include "common/math_util.h"
@@ -43,7 +45,9 @@ public:
 
     template <typename T>
     T Read() {
+        static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
         ASSERT(read_index + sizeof(T) <= buffer.size());
+
         T val;
         std::memcpy(&val, buffer.data() + read_index, sizeof(T));
         read_index += sizeof(T);
@@ -53,7 +57,9 @@ public:
 
     template <typename T>
     T ReadUnaligned() {
+        static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
         ASSERT(read_index + sizeof(T) <= buffer.size());
+
         T val;
         std::memcpy(&val, buffer.data() + read_index, sizeof(T));
         read_index += sizeof(T);
@@ -87,8 +93,12 @@ public:
 
     template <typename T>
     void Write(const T& val) {
-        if (buffer.size() < write_index + sizeof(T))
+        static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
+
+        if (buffer.size() < write_index + sizeof(T)) {
             buffer.resize(buffer.size() + sizeof(T) + DefaultBufferSize);
+        }
+
         std::memcpy(buffer.data() + write_index, &val, sizeof(T));
         write_index += sizeof(T);
         write_index = Common::AlignUp(write_index, 4);
@@ -96,7 +106,9 @@ public:
 
     template <typename T>
     void WriteObject(const T& val) {
-        u32_le size = static_cast<u32>(sizeof(val));
+        static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
+
+        const u32_le size = static_cast<u32>(sizeof(val));
         Write(size);
         // TODO(Subv): Support file descriptors.
         Write<u32_le>(0); // Fd count.
@@ -176,7 +188,7 @@ private:
 
 class IGBPConnectRequestParcel : public Parcel {
 public:
-    explicit IGBPConnectRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
+    explicit IGBPConnectRequestParcel(std::vector<u8> buffer) : Parcel(std::move(buffer)) {
         Deserialize();
     }
     ~IGBPConnectRequestParcel() override = default;
@@ -223,8 +235,8 @@ private:
 
 class IGBPSetPreallocatedBufferRequestParcel : public Parcel {
 public:
-    explicit IGBPSetPreallocatedBufferRequestParcel(const std::vector<u8>& buffer)
-        : Parcel(buffer) {
+    explicit IGBPSetPreallocatedBufferRequestParcel(std::vector<u8> buffer)
+        : Parcel(std::move(buffer)) {
         Deserialize();
     }
     ~IGBPSetPreallocatedBufferRequestParcel() override = default;
@@ -256,7 +268,7 @@ protected:
 
 class IGBPDequeueBufferRequestParcel : public Parcel {
 public:
-    explicit IGBPDequeueBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
+    explicit IGBPDequeueBufferRequestParcel(std::vector<u8> buffer) : Parcel(std::move(buffer)) {
         Deserialize();
     }
     ~IGBPDequeueBufferRequestParcel() override = default;
@@ -307,7 +319,7 @@ protected:
 
 class IGBPRequestBufferRequestParcel : public Parcel {
 public:
-    explicit IGBPRequestBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
+    explicit IGBPRequestBufferRequestParcel(std::vector<u8> buffer) : Parcel(std::move(buffer)) {
         Deserialize();
     }
     ~IGBPRequestBufferRequestParcel() override = default;
@@ -322,8 +334,7 @@ public:
 
 class IGBPRequestBufferResponseParcel : public Parcel {
 public:
-    explicit IGBPRequestBufferResponseParcel(NVFlinger::IGBPBuffer buffer)
-        : Parcel(), buffer(buffer) {}
+    explicit IGBPRequestBufferResponseParcel(NVFlinger::IGBPBuffer buffer) : buffer(buffer) {}
     ~IGBPRequestBufferResponseParcel() override = default;
 
 protected:
@@ -340,7 +351,7 @@ protected:
 
 class IGBPQueueBufferRequestParcel : public Parcel {
 public:
-    explicit IGBPQueueBufferRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
+    explicit IGBPQueueBufferRequestParcel(std::vector<u8> buffer) : Parcel(std::move(buffer)) {
         Deserialize();
     }
     ~IGBPQueueBufferRequestParcel() override = default;
@@ -409,7 +420,7 @@ private:
 
 class IGBPQueryRequestParcel : public Parcel {
 public:
-    explicit IGBPQueryRequestParcel(const std::vector<u8>& buffer) : Parcel(buffer) {
+    explicit IGBPQueryRequestParcel(std::vector<u8> buffer) : Parcel(std::move(buffer)) {
         Deserialize();
     }
     ~IGBPQueryRequestParcel() override = default;
@@ -579,7 +590,7 @@ private:
 
 class ISystemDisplayService final : public ServiceFramework<ISystemDisplayService> {
 public:
-    ISystemDisplayService() : ServiceFramework("ISystemDisplayService") {
+    explicit ISystemDisplayService() : ServiceFramework("ISystemDisplayService") {
         static const FunctionInfo functions[] = {
             {1200, nullptr, "GetZOrderCountMin"},
             {1202, nullptr, "GetZOrderCountMax"},
@@ -777,7 +788,7 @@ private:
 
 class IApplicationDisplayService final : public ServiceFramework<IApplicationDisplayService> {
 public:
-    IApplicationDisplayService(std::shared_ptr<NVFlinger::NVFlinger> nv_flinger);
+    explicit IApplicationDisplayService(std::shared_ptr<NVFlinger::NVFlinger> nv_flinger);
     ~IApplicationDisplayService() = default;
 
 private: