config: Make high GPU accuracy the default

This is a better default for most games, yielding better performance and
less graphical issues.

.ci/scripts/windows/docker.sh

@@ -42,3 +42,8 @@ done
 pip3 install pefile
 python3 .ci/scripts/windows/scan_dll.py package/*.exe "package/"
 python3 .ci/scripts/windows/scan_dll.py package/imageformats/*.dll "package/"
+
+# copy FFmpeg libraries
+EXTERNALS_PATH="$(pwd)/build/externals"
+FFMPEG_DLL_PATH="$(find ${EXTERNALS_PATH} -maxdepth 1 -type d | grep ffmpeg)/bin"
+find ${FFMPEG_DLL_PATH} -type f -regex ".*\.dll" -exec cp -v {} package/ ';'

.gitmodules

@@ -37,3 +37,6 @@
 [submodule "opus"]
 	path = externals/opus/opus
 	url = https://github.com/xiph/opus.git
+[submodule "externals/ffmpeg"]
+	path = externals/ffmpeg
+	url = https://git.ffmpeg.org/ffmpeg.git

CMakeLists.txt

@@ -18,6 +18,8 @@ CMAKE_DEPENDENT_OPTION(YUZU_USE_BUNDLED_QT "Download bundled Qt binaries" ON "EN
 
 option(ENABLE_WEB_SERVICE "Enable web services (telemetry, etc.)" ON)
 
+CMAKE_DEPENDENT_OPTION(YUZU_USE_BUNDLED_FFMPEG "Download/Build bundled yuzu" ON "WIN32" OFF)
+
 option(YUZU_USE_QT_WEB_ENGINE "Use QtWebEngine for web applet implementation" OFF)
 
 option(YUZU_ENABLE_BOXCAT "Enable the Boxcat service, a yuzu high-level implementation of BCAT" ON)
@@ -384,19 +386,141 @@ if (NOT LIBUSB_FOUND)
     set(LIBUSB_LIBRARIES usb)
 endif()
 
-# Use system installed ffmpeg.
-if (NOT MSVC)
-    find_package(FFmpeg REQUIRED)
-else()
-    set(FFMPEG_EXT_NAME "ffmpeg-4.2.1")
-    set(FFMPEG_PATH "${CMAKE_BINARY_DIR}/externals/${FFMPEG_EXT_NAME}")
-    download_bundled_external("ffmpeg/" ${FFMPEG_EXT_NAME} "")
-    set(FFMPEG_FOUND YES)
-    set(FFMPEG_INCLUDE_DIR "${FFMPEG_PATH}/include" CACHE PATH "Path to FFmpeg headers" FORCE)
-    set(FFMPEG_LIBRARY_DIR "${FFMPEG_PATH}/bin" CACHE PATH "Path to FFmpeg library" FORCE)
-    set(FFMPEG_DLL_DIR "${FFMPEG_PATH}/bin" CACHE PATH "Path to FFmpeg dll's" FORCE)
+# List of all FFmpeg components required
+set(FFmpeg_COMPONENTS
+    avcodec
+    avutil
+    swscale)
+
+if (NOT YUZU_USE_BUNDLED_FFMPEG)
+    # Use system installed FFmpeg
+    find_package(FFmpeg REQUIRED COMPONENTS ${FFmpeg_COMPONENTS})
+
+    if (FFmpeg_FOUND)
+        # Overwrite aggregate defines from FFmpeg module to avoid over-linking libraries.
+        # Prevents shipping too many libraries with the AppImage.
+        set(FFmpeg_LIBRARIES "")
+        set(FFmpeg_INCLUDE_DIR "")
+
+        foreach(COMPONENT ${FFmpeg_COMPONENTS})
+            set(FFmpeg_LIBRARIES ${FFmpeg_LIBRARIES} ${FFmpeg_LIBRARY_${COMPONENT}} CACHE PATH "Paths to FFmpeg libraries" FORCE)
+            set(FFmpeg_INCLUDE_DIR ${FFmpeg_INCLUDE_DIR} ${FFmpeg_INCLUDE_${COMPONENT}} CACHE PATH "Path to FFmpeg headers" FORCE)
+        endforeach()
+    else()
+        message(WARNING "FFmpeg not found, falling back to externals")
+        set(YUZU_USE_BUNDLED_FFMPEG ON)
+    endif()
 endif()
 
+if (YUZU_USE_BUNDLED_FFMPEG)
+    if (NOT WIN32)
+        # Build FFmpeg from externals
+        message(STATUS "Using FFmpeg from externals")
+
+        # FFmpeg has source that requires one of nasm or yasm to assemble it.
+        # REQUIRED throws an error if not found here during configuration rather than during compilation.
+        find_program(ASSEMBLER NAMES nasm yasm REQUIRED)
+
+        set(FFmpeg_PREFIX ${PROJECT_SOURCE_DIR}/externals/ffmpeg)
+        set(FFmpeg_BUILD_DIR ${PROJECT_BINARY_DIR}/externals/ffmpeg)
+        set(FFmpeg_MAKEFILE ${FFmpeg_BUILD_DIR}/Makefile)
+        make_directory(${FFmpeg_BUILD_DIR})
+
+        # Read version string from external
+        file(READ ${FFmpeg_PREFIX}/RELEASE FFmpeg_VERSION)
+        set(FFmpeg_FOUND NO)
+        if (NOT FFmpeg_VERSION STREQUAL "")
+            set(FFmpeg_FOUND YES)
+        endif()
+
+        foreach(COMPONENT ${FFmpeg_COMPONENTS})
+            set(FFmpeg_${COMPONENT}_PREFIX "${FFmpeg_BUILD_DIR}/lib${COMPONENT}")
+            set(FFmpeg_${COMPONENT}_LIB_NAME "lib${COMPONENT}.a")
+            set(FFmpeg_${COMPONENT}_LIBRARY "${FFmpeg_${COMPONENT}_PREFIX}/${FFmpeg_${COMPONENT}_LIB_NAME}")
+
+            set(FFmpeg_LIBRARIES
+                ${FFmpeg_LIBRARIES}
+                ${FFmpeg_${COMPONENT}_LIBRARY}
+                CACHE PATH "Paths to FFmpeg libraries" FORCE)
+        endforeach()
+
+        set(FFmpeg_INCLUDE_DIR
+            ${FFmpeg_PREFIX}
+            CACHE PATH "Path to FFmpeg headers" FORCE)
+
+        # `configure` parameters builds only exactly what yuzu needs from FFmpeg
+        # `--disable-{vaapi,vdpau}` is needed to avoid linking issues
+        add_custom_command(
+            OUTPUT
+                ${FFmpeg_MAKEFILE}
+            COMMAND
+                /bin/bash ${FFmpeg_PREFIX}/configure
+                    --disable-avdevice
+                    --disable-avfilter
+                    --disable-avformat
+                    --disable-doc
+                    --disable-everything
+                    --disable-ffmpeg
+                    --disable-ffprobe
+                    --disable-network
+                    --disable-postproc
+                    --disable-swresample
+                    --disable-vaapi
+                    --disable-vdpau
+                    --enable-decoder=h264
+                    --enable-decoder=vp9
+            WORKING_DIRECTORY
+                ${FFmpeg_BUILD_DIR}
+        )
+
+        # Workaround for Ubuntu 18.04's older version of make not being able to call make as a child
+        # with context of the jobserver. Also helps ninja users.
+        execute_process(
+            COMMAND
+                nproc
+            OUTPUT_VARIABLE
+                SYSTEM_THREADS)
+
+        add_custom_command(
+            OUTPUT
+                ${FFmpeg_LIBRARIES}
+            COMMAND
+                make -j${SYSTEM_THREADS}
+            WORKING_DIRECTORY
+                ${FFmpeg_BUILD_DIR}
+        )
+
+        # ALL makes this custom target build every time
+        # but it won't actually build if the DEPENDS parameter is up to date
+        add_custom_target(ffmpeg-build ALL DEPENDS ${FFmpeg_LIBRARIES})
+        add_custom_target(ffmpeg-configure ALL DEPENDS ${FFmpeg_MAKEFILE})
+
+        if (FFmpeg_FOUND)
+            message(STATUS "Found FFmpeg version ${FFmpeg_VERSION}")
+
+            add_dependencies(ffmpeg-build ffmpeg-configure)
+        else()
+            message(FATAL_ERROR "FFmpeg not found")
+        endif()
+    else() # WIN32
+        # Use yuzu FFmpeg binaries
+        set(FFmpeg_EXT_NAME "ffmpeg-4.2.1")
+        set(FFmpeg_PATH "${CMAKE_BINARY_DIR}/externals/${FFmpeg_EXT_NAME}")
+        download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "")
+        set(FFmpeg_FOUND YES)
+        set(FFmpeg_INCLUDE_DIR "${FFmpeg_PATH}/include" CACHE PATH "Path to FFmpeg headers" FORCE)
+        set(FFmpeg_LIBRARY_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg library directory" FORCE)
+        set(FFmpeg_DLL_DIR "${FFmpeg_PATH}/bin" CACHE PATH "Path to FFmpeg dll's" FORCE)
+        set(FFmpeg_LIBRARIES
+            ${FFmpeg_LIBRARY_DIR}/swscale.lib
+            ${FFmpeg_LIBRARY_DIR}/avcodec.lib
+            ${FFmpeg_LIBRARY_DIR}/avutil.lib
+            CACHE PATH "Paths to FFmpeg libraries" FORCE)
+    endif()
+endif()
+
+unset(FFmpeg_COMPONENTS)
+
 # Prefer the -pthread flag on Linux.
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)

CMakeModules/CopyYuzuFFmpegDeps.cmake

@@ -1,7 +1,7 @@
 function(copy_yuzu_FFmpeg_deps target_dir)
     include(WindowsCopyFiles)
     set(DLL_DEST "${CMAKE_BINARY_DIR}/bin/$<CONFIG>/")
-    windows_copy_files(${target_dir} ${FFMPEG_DLL_DIR} ${DLL_DEST}
+    windows_copy_files(${target_dir} ${FFmpeg_DLL_DIR} ${DLL_DEST}
         avcodec-58.dll
         avutil-56.dll
         swresample-3.dll

README.md

@@ -33,7 +33,7 @@ If you want to contribute to the user interface translation, please check out th
 
 
 ### Support
-We happily accept monetary donations or donated games and hardware. Please see our [donations page](https://yuzu-emu.org/donate/) for more information on how you can contribute to yuzu. Any donations received will go towards things like:
+We happily accept monetary donations, or donated games and hardware. Please see our [donations page](https://yuzu-emu.org/donate/) for more information on how you can contribute to yuzu. Any donations received will go towards things like:
 * Switch consoles to explore and reverse-engineer the hardware
 * Switch games for testing, reverse-engineering, and implementing new features
 * Web hosting and infrastructure setup

dist/icons/controller/controller.qrc

@@ -1,26 +1,5 @@
 <RCC>
   <qresource prefix="controller">
-    <file alias="dual_joycon">dual_joycon.png</file>
-    <file alias="dual_joycon_dark">dual_joycon_dark.png</file>
-    <file alias="dual_joycon_midnight">dual_joycon_midnight.png</file>
-    <file alias="handheld">handheld.png</file>
-    <file alias="handheld_dark">handheld_dark.png</file>
-    <file alias="handheld_midnight">handheld_midnight.png</file>
-    <file alias="pro_controller">pro_controller.png</file>
-    <file alias="pro_controller_dark">pro_controller_dark.png</file>
-    <file alias="pro_controller_midnight">pro_controller_midnight.png</file>
-    <file alias="single_joycon_left">single_joycon_left.png</file>
-    <file alias="single_joycon_left_dark">single_joycon_left_dark.png</file>
-    <file alias="single_joycon_left_midnight">single_joycon_left_midnight.png</file>
-    <file alias="single_joycon_right">single_joycon_right.png</file>
-    <file alias="single_joycon_right_dark">single_joycon_right_dark.png</file>
-    <file alias="single_joycon_right_midnight">single_joycon_right_midnight.png</file>
-    <file alias="single_joycon_left_vertical">single_joycon_left_vertical.png</file>
-    <file alias="single_joycon_left_vertical_dark">single_joycon_left_vertical_dark.png</file>
-    <file alias="single_joycon_left_vertical_midnight">single_joycon_left_vertical_midnight.png</file>
-    <file alias="single_joycon_right_vertical">single_joycon_right_vertical.png</file>
-    <file alias="single_joycon_right_vertical_dark">single_joycon_right_vertical_dark.png</file>
-    <file alias="single_joycon_right_vertical_midnight">single_joycon_right_vertical_midnight.png</file>
     <file alias="applet_dual_joycon">applet_dual_joycon.png</file>
     <file alias="applet_dual_joycon_dark">applet_dual_joycon_dark.png</file>	
     <file alias="applet_dual_joycon_midnight">applet_dual_joycon_midnight.png</file>	

externals/find-modules/FindFFmpeg.cmake

@@ -1,100 +1,187 @@
-# - Try to find ffmpeg libraries (libavcodec, libavformat and libavutil)
-# Once done this will define
+# FindFFmpeg
+# ----------
 #
-# FFMPEG_FOUND - system has ffmpeg or libav
-# FFMPEG_INCLUDE_DIR - the ffmpeg include directory
-# FFMPEG_LIBRARIES - Link these to use ffmpeg
-# FFMPEG_LIBAVCODEC
-# FFMPEG_LIBAVFORMAT
-# FFMPEG_LIBAVUTIL
+# Copyright 2019 Citra Emulator Project
+# Licensed under GPLv2 or any later version
 #
-# Copyright (c) 2008 Andreas Schneider <mail@cynapses.org>
-# Modified for other libraries by Lasse Kärkkäinen <tronic>
-# Modified for Hedgewars by Stepik777
-# Modified for FFmpeg-example Tuukka Pasanen 2018
-# Modified for yuzu toastUnlimted 2020
+# Find the native FFmpeg includes and libraries
 #
-# Redistribution and use is allowed according to the terms of the New
-# BSD license.
+# This module defines the following variables:
+#
+#  FFmpeg_INCLUDE_<component>: where to find <component>.h
+#  FFmpeg_LIBRARY_<component>: where to find the <component> library
+#  FFmpeg_INCLUDE_DIR: aggregate all the include paths
+#  FFmpeg_LIBRARIES: aggregate all the paths to the libraries
+#  FFmpeg_FOUND: True if all components have been found
+#
+# This module defines the following targets, which are prefered over variables:
+#
+#  FFmpeg::<component>: Target to use <component> directly, with include path,
+#    library and dependencies set up. If you are using a static build, you are
+#    responsible for adding any external dependencies (such as zlib, bzlib...).
+#
+# <component> can be one of:
+#   avcodec
+#   avdevice
+#   avfilter
+#   avformat
+#   avutil
+#   postproc
+#   swresample
+#   swscale
 #
 
-include(FindPackageHandleStandardArgs)
-
-find_package_handle_standard_args(FFMPEG
-  FOUND_VAR FFMPEG_FOUND
-  REQUIRED_VARS
-      FFMPEG_LIBRARY
-      FFMPEG_INCLUDE_DIR
-  VERSION_VAR FFMPEG_VERSION
+set(_FFmpeg_ALL_COMPONENTS
+    avcodec
+    avdevice
+    avfilter
+    avformat
+    avutil
+    postproc
+    swresample
+    swscale
 )
 
-if(FFMPEG_LIBRARIES AND FFMPEG_INCLUDE_DIR)
-  # in cache already
-  set(FFMPEG_FOUND TRUE)
-else()
-  # use pkg-config to get the directories and then use these values
-  # in the FIND_PATH() and FIND_LIBRARY() calls
-  find_package(PkgConfig)
-  if(PKG_CONFIG_FOUND)
-    pkg_check_modules(_FFMPEG_AVCODEC libavcodec)
-    pkg_check_modules(_FFMPEG_AVUTIL libavutil)
-    pkg_check_modules(_FFMPEG_SWSCALE libswscale)
+set(_FFmpeg_DEPS_avcodec avutil)
+set(_FFmpeg_DEPS_avdevice avcodec avformat avutil)
+set(_FFmpeg_DEPS_avfilter avutil)
+set(_FFmpeg_DEPS_avformat avcodec avutil)
+set(_FFmpeg_DEPS_postproc avutil)
+set(_FFmpeg_DEPS_swresample avutil)
+set(_FFmpeg_DEPS_swscale avutil)
+
+function(find_ffmpeg LIBNAME)
+  if(DEFINED ENV{FFMPEG_DIR})
+    set(FFMPEG_DIR $ENV{FFMPEG_DIR})
   endif()
 
-  find_path(FFMPEG_AVCODEC_INCLUDE_DIR
-    NAMES libavcodec/avcodec.h
-    PATHS ${_FFMPEG_AVCODEC_INCLUDE_DIRS}
-      /usr/include
-      /usr/local/include
-      /opt/local/include
-      /sw/include
-    PATH_SUFFIXES ffmpeg libav)
-
-  find_library(FFMPEG_LIBAVCODEC
-    NAMES avcodec
-    PATHS ${_FFMPEG_AVCODEC_LIBRARY_DIRS}
-      /usr/lib
-      /usr/local/lib
-      /opt/local/lib
-      /sw/lib)
-
-  find_library(FFMPEG_LIBAVUTIL
-    NAMES avutil
-    PATHS ${_FFMPEG_AVUTIL_LIBRARY_DIRS}
-      /usr/lib
-      /usr/local/lib
-      /opt/local/lib
-      /sw/lib)
-
-  find_library(FFMPEG_LIBSWSCALE
-    NAMES swscale
-    PATHS ${_FFMPEG_SWSCALE_LIBRARY_DIRS}
-      /usr/lib
-      /usr/local/lib
-      /opt/local/lib
-      /sw/lib)
-
-  if(FFMPEG_LIBAVCODEC AND FFMPEG_LIBAVUTIL AND FFMPEG_LIBSWSCALE)
-    set(FFMPEG_FOUND TRUE)
-  endif()
-
-  if(FFMPEG_FOUND)
-    set(FFMPEG_INCLUDE_DIR ${FFMPEG_AVCODEC_INCLUDE_DIR})
-    set(FFMPEG_LIBRARIES
-      ${FFMPEG_LIBAVCODEC}
-      ${FFMPEG_LIBAVUTIL}
-      ${FFMPEG_LIBSWSCALE})
-  endif()
-
-  if(FFMPEG_FOUND)
-    if(NOT FFMPEG_FIND_QUIETLY)
-      message(STATUS
-      "Found FFMPEG or Libav: ${FFMPEG_LIBRARIES}, ${FFMPEG_INCLUDE_DIR}")
-    endif()
+  if(FFMPEG_DIR)
+    list(APPEND INCLUDE_PATHS
+      ${FFMPEG_DIR}
+      ${FFMPEG_DIR}/ffmpeg
+      ${FFMPEG_DIR}/lib${LIBNAME}
+      ${FFMPEG_DIR}/include/lib${LIBNAME}
+      ${FFMPEG_DIR}/include/ffmpeg
+      ${FFMPEG_DIR}/include
+      NO_DEFAULT_PATH
+      NO_CMAKE_FIND_ROOT_PATH
+    )
+    list(APPEND LIB_PATHS
+      ${FFMPEG_DIR}
+      ${FFMPEG_DIR}/lib
+      ${FFMPEG_DIR}/lib${LIBNAME}
+      NO_DEFAULT_PATH
+      NO_CMAKE_FIND_ROOT_PATH
+    )
   else()
-    if(FFMPEG_FIND_REQUIRED)
-      message(FATAL_ERROR
-      "Could not find libavcodec or libavutil or libswscale")
+    list(APPEND INCLUDE_PATHS
+      /usr/local/include/ffmpeg
+      /usr/local/include/lib${LIBNAME}
+      /usr/include/ffmpeg
+      /usr/include/lib${LIBNAME}
+      /usr/include/ffmpeg/lib${LIBNAME}
+    )
+
+    list(APPEND LIB_PATHS
+      /usr/local/lib
+      /usr/lib
+    )
+  endif()
+
+  find_path(FFmpeg_INCLUDE_${LIBNAME} lib${LIBNAME}/${LIBNAME}.h
+    HINTS ${INCLUDE_PATHS}
+  )
+
+  find_library(FFmpeg_LIBRARY_${LIBNAME} ${LIBNAME}
+    HINTS ${LIB_PATHS}
+  )
+
+  if(NOT FFMPEG_DIR AND (NOT FFmpeg_LIBRARY_${LIBNAME} OR NOT FFmpeg_INCLUDE_${LIBNAME}))
+    # Didn't find it in the usual paths, try pkg-config
+    find_package(PkgConfig QUIET)
+    pkg_check_modules(FFmpeg_PKGCONFIG_${LIBNAME} QUIET lib${LIBNAME})
+
+    find_path(FFmpeg_INCLUDE_${LIBNAME} lib${LIBNAME}/${LIBNAME}.h
+      ${FFmpeg_PKGCONFIG_${LIBNAME}_INCLUDE_DIRS}
+    )
+
+    find_library(FFmpeg_LIBRARY_${LIBNAME} ${LIBNAME}
+      ${FFmpeg_PKGCONFIG_${LIBNAME}_LIBRARY_DIRS}
+    )
+  endif()
+
+  if(FFmpeg_INCLUDE_${LIBNAME} AND FFmpeg_LIBRARY_${LIBNAME})
+    set(FFmpeg_INCLUDE_${LIBNAME} "${FFmpeg_INCLUDE_${LIBNAME}}" PARENT_SCOPE)
+    set(FFmpeg_LIBRARY_${LIBNAME} "${FFmpeg_LIBRARY_${LIBNAME}}" PARENT_SCOPE)
+
+    # Extract FFmpeg version from version.h
+    foreach(v MAJOR MINOR MICRO)
+      set(FFmpeg_${LIBNAME}_VERSION_${v} 0)
+    endforeach()
+    string(TOUPPER ${LIBNAME} LIBNAME_UPPER)
+    file(STRINGS "${FFmpeg_INCLUDE_${LIBNAME}}/lib${LIBNAME}/version.h" _FFmpeg_VERSION_H_CONTENTS REGEX "#define LIB${LIBNAME_UPPER}_VERSION_(MAJOR|MINOR|MICRO) ")
+    set(_FFmpeg_VERSION_REGEX "([0-9]+)")
+    foreach(v MAJOR MINOR MICRO)
+      if("${_FFmpeg_VERSION_H_CONTENTS}" MATCHES "#define LIB${LIBNAME_UPPER}_VERSION_${v}[\\t ]+${_FFmpeg_VERSION_REGEX}")
+        set(FFmpeg_${LIBNAME}_VERSION_${v} "${CMAKE_MATCH_1}")
+      endif()
+    endforeach()
+    set(FFmpeg_${LIBNAME}_VERSION "${FFmpeg_${LIBNAME}_VERSION_MAJOR}.${FFmpeg_${LIBNAME}_VERSION_MINOR}.${FFmpeg_${LIBNAME}_VERSION_MICRO}")
+    set(FFmpeg_${c}_VERSION "${FFmpeg_${LIBNAME}_VERSION}" PARENT_SCOPE)
+    unset(_FFmpeg_VERSION_REGEX)
+    unset(_FFmpeg_VERSION_H_CONTENTS)
+
+    set(FFmpeg_${c}_FOUND TRUE PARENT_SCOPE)
+    if(NOT FFmpeg_FIND_QUIETLY)
+      message("--  Found ${LIBNAME}: ${FFmpeg_INCLUDE_${LIBNAME}} ${FFmpeg_LIBRARY_${LIBNAME}} (version: ${FFmpeg_${LIBNAME}_VERSION})")
     endif()
   endif()
+endfunction()
+
+foreach(c ${_FFmpeg_ALL_COMPONENTS})
+  find_ffmpeg(${c})
+endforeach()
+
+foreach(c ${_FFmpeg_ALL_COMPONENTS})
+  if(FFmpeg_${c}_FOUND)
+    list(APPEND FFmpeg_INCLUDE_DIR ${FFmpeg_INCLUDE_${c}})
+    list(APPEND FFmpeg_LIBRARIES ${FFmpeg_LIBRARY_${c}})
+
+    add_library(FFmpeg::${c} IMPORTED UNKNOWN)
+    set_target_properties(FFmpeg::${c} PROPERTIES
+      IMPORTED_LOCATION ${FFmpeg_LIBRARY_${c}}
+      INTERFACE_INCLUDE_DIRECTORIES ${FFmpeg_INCLUDE_${c}}
+    )
+    if(_FFmpeg_DEPS_${c})
+      set(deps)
+      foreach(dep ${_FFmpeg_DEPS_${c}})
+        list(APPEND deps FFmpeg::${dep})
+      endforeach()
+
+      set_target_properties(FFmpeg::${c} PROPERTIES
+        INTERFACE_LINK_LIBRARIES "${deps}"
+      )
+      unset(deps)
+    endif()
+  endif()
+endforeach()
+
+if(FFmpeg_INCLUDE_DIR)
+  list(REMOVE_DUPLICATES FFmpeg_INCLUDE_DIR)
 endif()
+
+foreach(c ${FFmpeg_FIND_COMPONENTS})
+  list(APPEND _FFmpeg_REQUIRED_VARS FFmpeg_INCLUDE_${c} FFmpeg_LIBRARY_${c})
+endforeach()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(FFmpeg
+  REQUIRED_VARS ${_FFmpeg_REQUIRED_VARS}
+  HANDLE_COMPONENTS
+)
+
+foreach(c ${_FFmpeg_ALL_COMPONENTS})
+  unset(_FFmpeg_DEPS_${c})
+endforeach()
+unset(_FFmpeg_ALL_COMPONENTS)
+unset(_FFmpeg_REQUIRED_VARS)

src/audio_core/command_generator.cpp

@@ -383,11 +383,14 @@ void CommandGenerator::GenerateI3dl2ReverbEffectCommand(s32 mix_buffer_offset, E
     const auto channel_count = params.channel_count;
     for (s32 i = 0; i < channel_count; i++) {
         // TODO(ogniK): Actually implement reverb
+        /*
         if (params.input[i] != params.output[i]) {
             const auto* input = GetMixBuffer(mix_buffer_offset + params.input[i]);
             auto* output = GetMixBuffer(mix_buffer_offset + params.output[i]);
             ApplyMix<1>(output, input, 32768, worker_params.sample_count);
-        }
+        }*/
+        auto* output = GetMixBuffer(mix_buffer_offset + params.output[i]);
+        std::memset(output, 0, worker_params.sample_count * sizeof(s32));
     }
 }
 

src/audio_core/stream.cpp

@@ -111,7 +111,14 @@ void Stream::PlayNextBuffer(std::chrono::nanoseconds ns_late) {
 
     sink_stream.EnqueueSamples(GetNumChannels(), active_buffer->GetSamples());
 
-    core_timing.ScheduleEvent(GetBufferReleaseNS(*active_buffer) - ns_late, release_event, {});
+    const auto buffer_release_ns = GetBufferReleaseNS(*active_buffer);
+
+    // If ns_late is higher than the update rate ignore the delay
+    if (ns_late > buffer_release_ns) {
+        ns_late = {};
+    }
+
+    core_timing.ScheduleEvent(buffer_release_ns - ns_late, release_event, {});
 }
 
 void Stream::ReleaseActiveBuffer(std::chrono::nanoseconds ns_late) {

src/common/CMakeLists.txt

@@ -206,6 +206,8 @@ if (MSVC)
 else()
   target_compile_options(common PRIVATE
     -Werror
+
+    $<$<CXX_COMPILER_ID:Clang>:-fsized-deallocation>
   )
 endif()
 

src/common/ring_buffer.h

@@ -19,15 +19,14 @@ namespace Common {
 /// SPSC ring buffer
 /// @tparam T            Element type
 /// @tparam capacity     Number of slots in ring buffer
-/// @tparam granularity  Slot size in terms of number of elements
-template <typename T, std::size_t capacity, std::size_t granularity = 1>
+template <typename T, std::size_t capacity>
 class RingBuffer {
-    /// A "slot" is made of `granularity` elements of `T`.
-    static constexpr std::size_t slot_size = granularity * sizeof(T);
+    /// A "slot" is made of a single `T`.
+    static constexpr std::size_t slot_size = sizeof(T);
     // T must be safely memcpy-able and have a trivial default constructor.
     static_assert(std::is_trivial_v<T>);
     // Ensure capacity is sensible.
-    static_assert(capacity < std::numeric_limits<std::size_t>::max() / 2 / granularity);
+    static_assert(capacity < std::numeric_limits<std::size_t>::max() / 2);
     static_assert((capacity & (capacity - 1)) == 0, "capacity must be a power of two");
     // Ensure lock-free.
     static_assert(std::atomic_size_t::is_always_lock_free);
@@ -47,7 +46,7 @@ public:
         const std::size_t second_copy = push_count - first_copy;
 
         const char* in = static_cast<const char*>(new_slots);
-        std::memcpy(m_data.data() + pos * granularity, in, first_copy * slot_size);
+        std::memcpy(m_data.data() + pos, in, first_copy * slot_size);
         in += first_copy * slot_size;
         std::memcpy(m_data.data(), in, second_copy * slot_size);
 
@@ -74,7 +73,7 @@ public:
         const std::size_t second_copy = pop_count - first_copy;
 
         char* out = static_cast<char*>(output);
-        std::memcpy(out, m_data.data() + pos * granularity, first_copy * slot_size);
+        std::memcpy(out, m_data.data() + pos, first_copy * slot_size);
         out += first_copy * slot_size;
         std::memcpy(out, m_data.data(), second_copy * slot_size);
 
@@ -84,9 +83,9 @@ public:
     }
 
     std::vector<T> Pop(std::size_t max_slots = ~std::size_t(0)) {
-        std::vector<T> out(std::min(max_slots, capacity) * granularity);
-        const std::size_t count = Pop(out.data(), out.size() / granularity);
-        out.resize(count * granularity);
+        std::vector<T> out(std::min(max_slots, capacity));
+        const std::size_t count = Pop(out.data(), out.size());
+        out.resize(count);
         return out;
     }
 
@@ -113,7 +112,7 @@ private:
     alignas(128) std::atomic_size_t m_write_index{0};
 #endif
 
-    std::array<T, granularity * capacity> m_data;
+    std::array<T, capacity> m_data;
 };
 
 } // namespace Common

src/common/scope_exit.h

@@ -49,3 +49,9 @@ ScopeExitHelper<Func> ScopeExit(Func&& func) {
  * \endcode
  */
 #define SCOPE_EXIT(body) auto CONCAT2(scope_exit_helper_, __LINE__) = detail::ScopeExit([&]() body)
+
+/**
+ * This macro is similar to SCOPE_EXIT, except the object is caller managed. This is intended to be
+ * used when the caller might want to cancel the ScopeExit.
+ */
+#define SCOPE_GUARD(body) detail::ScopeExit([&]() body)

src/common/string_util.cpp

@@ -141,27 +141,13 @@ std::string ReplaceAll(std::string result, const std::string& src, const std::st
 }
 
 std::string UTF16ToUTF8(const std::u16string& input) {
-#ifdef _MSC_VER
-    // Workaround for missing char16_t/char32_t instantiations in MSVC2017
-    std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
-    std::basic_string<__int16> tmp_buffer(input.cbegin(), input.cend());
-    return convert.to_bytes(tmp_buffer);
-#else
     std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
     return convert.to_bytes(input);
-#endif
 }
 
 std::u16string UTF8ToUTF16(const std::string& input) {
-#ifdef _MSC_VER
-    // Workaround for missing char16_t/char32_t instantiations in MSVC2017
-    std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
-    auto tmp_buffer = convert.from_bytes(input);
-    return std::u16string(tmp_buffer.cbegin(), tmp_buffer.cend());
-#else
     std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
     return convert.from_bytes(input);
-#endif
 }
 
 #ifdef _WIN32

src/core/CMakeLists.txt

@@ -148,7 +148,7 @@ add_library(core STATIC
     hle/kernel/client_session.h
     hle/kernel/code_set.cpp
     hle/kernel/code_set.h
-    hle/kernel/errors.h
+    hle/kernel/svc_results.h
     hle/kernel/global_scheduler_context.cpp
     hle/kernel/global_scheduler_context.h
     hle/kernel/handle_table.cpp
@@ -160,22 +160,29 @@ add_library(core STATIC
     hle/kernel/k_affinity_mask.h
     hle/kernel/k_condition_variable.cpp
     hle/kernel/k_condition_variable.h
+    hle/kernel/k_event.cpp
+    hle/kernel/k_event.h
     hle/kernel/k_light_condition_variable.h
     hle/kernel/k_light_lock.cpp
     hle/kernel/k_light_lock.h
     hle/kernel/k_priority_queue.h
+    hle/kernel/k_readable_event.cpp
+    hle/kernel/k_readable_event.h
     hle/kernel/k_resource_limit.cpp
     hle/kernel/k_resource_limit.h
     hle/kernel/k_scheduler.cpp
     hle/kernel/k_scheduler.h
     hle/kernel/k_scheduler_lock.h
     hle/kernel/k_scoped_lock.h
+    hle/kernel/k_scoped_resource_reservation.h
     hle/kernel/k_scoped_scheduler_lock_and_sleep.h
     hle/kernel/k_synchronization_object.cpp
     hle/kernel/k_synchronization_object.h
     hle/kernel/k_thread.cpp
     hle/kernel/k_thread.h
     hle/kernel/k_thread_queue.h
+    hle/kernel/k_writable_event.cpp
+    hle/kernel/k_writable_event.h
     hle/kernel/kernel.cpp
     hle/kernel/kernel.h
     hle/kernel/memory/address_space_info.cpp
@@ -204,8 +211,6 @@ add_library(core STATIC
     hle/kernel/process.h
     hle/kernel/process_capability.cpp
     hle/kernel/process_capability.h
-    hle/kernel/readable_event.cpp
-    hle/kernel/readable_event.h
     hle/kernel/server_port.cpp
     hle/kernel/server_port.h
     hle/kernel/server_session.cpp
@@ -219,15 +224,12 @@ add_library(core STATIC
     hle/kernel/svc.cpp
     hle/kernel/svc.h
     hle/kernel/svc_common.h
-    hle/kernel/svc_results.h
     hle/kernel/svc_types.h
     hle/kernel/svc_wrap.h
     hle/kernel/time_manager.cpp
     hle/kernel/time_manager.h
     hle/kernel/transfer_memory.cpp
     hle/kernel/transfer_memory.h
-    hle/kernel/writable_event.cpp
-    hle/kernel/writable_event.h
     hle/lock.cpp
     hle/lock.h
     hle/result.h
@@ -651,6 +653,8 @@ else()
         $<$<CXX_COMPILER_ID:GNU>:-Werror=unused-but-set-parameter>
         $<$<CXX_COMPILER_ID:GNU>:-Werror=unused-but-set-variable>
 
+        $<$<CXX_COMPILER_ID:Clang>:-fsized-deallocation>
+
         -Wno-sign-conversion
     )
 endif()

src/core/crypto/key_manager.cpp

@@ -568,6 +568,11 @@ KeyManager::KeyManager() {
     // Initialize keys
     const std::string hactool_keys_dir = Common::FS::GetHactoolConfigurationPath();
     const std::string yuzu_keys_dir = Common::FS::GetUserPath(Common::FS::UserPath::KeysDir);
+
+    if (!Common::FS::Exists(yuzu_keys_dir)) {
+        Common::FS::CreateDir(yuzu_keys_dir);
+    }
+
     if (Settings::values.use_dev_keys) {
         dev_mode = true;
         AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "dev.keys", false);

src/core/frontend/input.h

@@ -21,6 +21,11 @@ enum class AnalogDirection : u8 {
     UP,
     DOWN,
 };
+struct AnalogProperties {
+    float deadzone;
+    float range;
+    float threshold;
+};
 
 /// An abstract class template for an input device (a button, an analog input, etc.).
 template <typename StatusType>
@@ -30,6 +35,12 @@ public:
     virtual StatusType GetStatus() const {
         return {};
     }
+    virtual StatusType GetRawStatus() const {
+        return GetStatus();
+    }
+    virtual AnalogProperties GetAnalogProperties() const {
+        return {};
+    }
     virtual bool GetAnalogDirectionStatus([[maybe_unused]] AnalogDirection direction) const {
         return {};
     }

src/core/hle/kernel/client_port.cpp

@@ -4,11 +4,11 @@
 
 #include "core/hle/kernel/client_port.h"
 #include "core/hle/kernel/client_session.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/hle_ipc.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/server_port.h"
 #include "core/hle/kernel/session.h"
+#include "core/hle/kernel/svc_results.h"
 
 namespace Kernel {
 
@@ -21,7 +21,7 @@ std::shared_ptr<ServerPort> ClientPort::GetServerPort() const {
 
 ResultVal<std::shared_ptr<ClientSession>> ClientPort::Connect() {
     if (active_sessions >= max_sessions) {
-        return ERR_MAX_CONNECTIONS_REACHED;
+        return ResultMaxConnectionsReached;
     }
     active_sessions++;
 

src/core/hle/kernel/client_session.cpp

@@ -3,11 +3,11 @@
 // Refer to the license.txt file included.
 
 #include "core/hle/kernel/client_session.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/hle_ipc.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/session.h"
+#include "core/hle/kernel/svc_results.h"
 #include "core/hle/result.h"
 
 namespace Kernel {
@@ -43,7 +43,7 @@ ResultCode ClientSession::SendSyncRequest(std::shared_ptr<KThread> thread,
                                           Core::Timing::CoreTiming& core_timing) {
     // Keep ServerSession alive until we're done working with it.
     if (!parent->Server()) {
-        return ERR_SESSION_CLOSED_BY_REMOTE;
+        return ResultSessionClosedByRemote;
     }
 
     // Signal the server session that new data is available

src/core/hle/kernel/errors.h

@@ -1,43 +0,0 @@
-// Copyright 2018 yuzu emulator team
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include "core/hle/result.h"
-
-namespace Kernel {
-
-// Confirmed Switch kernel error codes
-
-constexpr ResultCode ERR_MAX_CONNECTIONS_REACHED{ErrorModule::Kernel, 7};
-constexpr ResultCode ERR_INVALID_CAPABILITY_DESCRIPTOR{ErrorModule::Kernel, 14};
-constexpr ResultCode ERR_THREAD_TERMINATING{ErrorModule::Kernel, 59};
-constexpr ResultCode ERR_TERMINATION_REQUESTED{ErrorModule::Kernel, 59};
-constexpr ResultCode ERR_INVALID_SIZE{ErrorModule::Kernel, 101};
-constexpr ResultCode ERR_INVALID_ADDRESS{ErrorModule::Kernel, 102};
-constexpr ResultCode ERR_OUT_OF_RESOURCES{ErrorModule::Kernel, 103};
-constexpr ResultCode ERR_OUT_OF_MEMORY{ErrorModule::Kernel, 104};
-constexpr ResultCode ERR_HANDLE_TABLE_FULL{ErrorModule::Kernel, 105};
-constexpr ResultCode ERR_INVALID_ADDRESS_STATE{ErrorModule::Kernel, 106};
-constexpr ResultCode ERR_INVALID_CURRENT_MEMORY{ErrorModule::Kernel, 106};
-constexpr ResultCode ERR_INVALID_MEMORY_PERMISSIONS{ErrorModule::Kernel, 108};
-constexpr ResultCode ERR_INVALID_MEMORY_RANGE{ErrorModule::Kernel, 110};
-constexpr ResultCode ERR_INVALID_PROCESSOR_ID{ErrorModule::Kernel, 113};
-constexpr ResultCode ERR_INVALID_THREAD_PRIORITY{ErrorModule::Kernel, 112};
-constexpr ResultCode ERR_INVALID_HANDLE{ErrorModule::Kernel, 114};
-constexpr ResultCode ERR_INVALID_POINTER{ErrorModule::Kernel, 115};
-constexpr ResultCode ERR_INVALID_COMBINATION{ErrorModule::Kernel, 116};
-constexpr ResultCode RESULT_TIMEOUT{ErrorModule::Kernel, 117};
-constexpr ResultCode ERR_SYNCHRONIZATION_CANCELED{ErrorModule::Kernel, 118};
-constexpr ResultCode ERR_CANCELLED{ErrorModule::Kernel, 118};
-constexpr ResultCode ERR_OUT_OF_RANGE{ErrorModule::Kernel, 119};
-constexpr ResultCode ERR_INVALID_ENUM_VALUE{ErrorModule::Kernel, 120};
-constexpr ResultCode ERR_NOT_FOUND{ErrorModule::Kernel, 121};
-constexpr ResultCode ERR_BUSY{ErrorModule::Kernel, 122};
-constexpr ResultCode ERR_SESSION_CLOSED_BY_REMOTE{ErrorModule::Kernel, 123};
-constexpr ResultCode ERR_INVALID_STATE{ErrorModule::Kernel, 125};
-constexpr ResultCode ERR_RESERVED_VALUE{ErrorModule::Kernel, 126};
-constexpr ResultCode ERR_RESOURCE_LIMIT_EXCEEDED{ErrorModule::Kernel, 132};
-
-} // namespace Kernel

src/core/hle/kernel/handle_table.cpp

@@ -6,12 +6,12 @@
 #include "common/assert.h"
 #include "common/logging/log.h"
 #include "core/core.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
+#include "core/hle/kernel/svc_results.h"
 
 namespace Kernel {
 namespace {
@@ -33,7 +33,7 @@ HandleTable::~HandleTable() = default;
 ResultCode HandleTable::SetSize(s32 handle_table_size) {
     if (static_cast<u32>(handle_table_size) > MAX_COUNT) {
         LOG_ERROR(Kernel, "Handle table size {} is greater than {}", handle_table_size, MAX_COUNT);
-        return ERR_OUT_OF_MEMORY;
+        return ResultOutOfMemory;
     }
 
     // Values less than or equal to zero indicate to use the maximum allowable
@@ -53,7 +53,7 @@ ResultVal<Handle> HandleTable::Create(std::shared_ptr<Object> obj) {
     const u16 slot = next_free_slot;
     if (slot >= table_size) {
         LOG_ERROR(Kernel, "Unable to allocate Handle, too many slots in use.");
-        return ERR_HANDLE_TABLE_FULL;
+        return ResultHandleTableFull;
     }
     next_free_slot = generations[slot];
 
@@ -76,7 +76,7 @@ ResultVal<Handle> HandleTable::Duplicate(Handle handle) {
     std::shared_ptr<Object> object = GetGeneric(handle);
     if (object == nullptr) {
         LOG_ERROR(Kernel, "Tried to duplicate invalid handle: {:08X}", handle);
-        return ERR_INVALID_HANDLE;
+        return ResultInvalidHandle;
     }
     return Create(std::move(object));
 }
@@ -84,7 +84,7 @@ ResultVal<Handle> HandleTable::Duplicate(Handle handle) {
 ResultCode HandleTable::Close(Handle handle) {
     if (!IsValid(handle)) {
         LOG_ERROR(Kernel, "Handle is not valid! handle={:08X}", handle);
-        return ERR_INVALID_HANDLE;
+        return ResultInvalidHandle;
     }
 
     const u16 slot = GetSlot(handle);

src/core/hle/kernel/hle_ipc.cpp

@@ -14,19 +14,19 @@
 #include "common/common_types.h"
 #include "common/logging/log.h"
 #include "core/hle/ipc_helpers.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/readable_event.h"
 #include "core/hle/kernel/server_session.h"
+#include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/time_manager.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/memory.h"
 
 namespace Kernel {

src/core/hle/kernel/hle_ipc.h

@@ -41,8 +41,8 @@ class KernelCore;
 class Process;
 class ServerSession;
 class KThread;
-class ReadableEvent;
-class WritableEvent;
+class KReadableEvent;
+class KWritableEvent;
 
 enum class ThreadWakeupReason;
 

src/core/hle/kernel/k_address_arbiter.cpp

@@ -118,9 +118,13 @@ ResultCode KAddressArbiter::SignalAndIncrementIfEqual(VAddr addr, s32 value, s32
 
         // Check the userspace value.
         s32 user_value{};
-        R_UNLESS(UpdateIfEqual(system, std::addressof(user_value), addr, value, value + 1),
-                 Svc::ResultInvalidCurrentMemory);
-        R_UNLESS(user_value == value, Svc::ResultInvalidState);
+        if (!UpdateIfEqual(system, &user_value, addr, value, value + 1)) {
+            LOG_ERROR(Kernel, "Invalid current memory!");
+            return ResultInvalidCurrentMemory;
+        }
+        if (user_value != value) {
+            return ResultInvalidState;
+        }
 
         auto it = thread_tree.nfind_light({addr, -1});
         while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
@@ -143,61 +147,34 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
     // Perform signaling.
     s32 num_waiters{};
     {
-        KScopedSchedulerLock sl(kernel);
+        [[maybe_unused]] const KScopedSchedulerLock sl(kernel);
 
         auto it = thread_tree.nfind_light({addr, -1});
         // Determine the updated value.
         s32 new_value{};
-        if (/*GetTargetFirmware() >= TargetFirmware_7_0_0*/ true) {
-            if (count <= 0) {
-                if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
-                    new_value = value - 2;
-                } else {
-                    new_value = value + 1;
-                }
+        if (count <= 0) {
+            if (it != thread_tree.end() && it->GetAddressArbiterKey() == addr) {
+                new_value = value - 2;
             } else {
-                if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
-                    auto tmp_it = it;
-                    s32 tmp_num_waiters{};
-                    while ((++tmp_it != thread_tree.end()) &&
-                           (tmp_it->GetAddressArbiterKey() == addr)) {
-                        if ((tmp_num_waiters++) >= count) {
-                            break;
-                        }
-                    }
-
-                    if (tmp_num_waiters < count) {
-                        new_value = value - 1;
-                    } else {
-                        new_value = value;
-                    }
-                } else {
-                    new_value = value + 1;
-                }
+                new_value = value + 1;
             }
         } else {
-            if (count <= 0) {
-                if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
-                    new_value = value - 1;
-                } else {
-                    new_value = value + 1;
-                }
-            } else {
+            if (it != thread_tree.end() && it->GetAddressArbiterKey() == addr) {
                 auto tmp_it = it;
                 s32 tmp_num_waiters{};
-                while ((tmp_it != thread_tree.end()) && (tmp_it->GetAddressArbiterKey() == addr) &&
-                       (tmp_num_waiters < count + 1)) {
-                    ++tmp_num_waiters;
-                    ++tmp_it;
+                while (++tmp_it != thread_tree.end() && tmp_it->GetAddressArbiterKey() == addr) {
+                    if (tmp_num_waiters++ >= count) {
+                        break;
+                    }
                 }
 
-                if (tmp_num_waiters == 0) {
-                    new_value = value + 1;
-                } else if (tmp_num_waiters <= count) {
+                if (tmp_num_waiters < count) {
                     new_value = value - 1;
                 } else {
                     new_value = value;
                 }
+            } else {
+                new_value = value + 1;
             }
         }
 
@@ -205,13 +182,18 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
         s32 user_value{};
         bool succeeded{};
         if (value != new_value) {
-            succeeded = UpdateIfEqual(system, std::addressof(user_value), addr, value, new_value);
+            succeeded = UpdateIfEqual(system, &user_value, addr, value, new_value);
         } else {
-            succeeded = ReadFromUser(system, std::addressof(user_value), addr);
+            succeeded = ReadFromUser(system, &user_value, addr);
         }
 
-        R_UNLESS(succeeded, Svc::ResultInvalidCurrentMemory);
-        R_UNLESS(user_value == value, Svc::ResultInvalidState);
+        if (!succeeded) {
+            LOG_ERROR(Kernel, "Invalid current memory!");
+            return ResultInvalidCurrentMemory;
+        }
+        if (user_value != value) {
+            return ResultInvalidState;
+        }
 
         while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
                (it->GetAddressArbiterKey() == addr)) {
@@ -239,40 +221,40 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
         // Check that the thread isn't terminating.
         if (cur_thread->IsTerminationRequested()) {
             slp.CancelSleep();
-            return Svc::ResultTerminationRequested;
+            return ResultTerminationRequested;
         }
 
         // Set the synced object.
-        cur_thread->SetSyncedObject(nullptr, Svc::ResultTimedOut);
+        cur_thread->SetSyncedObject(nullptr, ResultTimedOut);
 
         // Read the value from userspace.
         s32 user_value{};
         bool succeeded{};
         if (decrement) {
-            succeeded = DecrementIfLessThan(system, std::addressof(user_value), addr, value);
+            succeeded = DecrementIfLessThan(system, &user_value, addr, value);
         } else {
-            succeeded = ReadFromUser(system, std::addressof(user_value), addr);
+            succeeded = ReadFromUser(system, &user_value, addr);
         }
 
         if (!succeeded) {
             slp.CancelSleep();
-            return Svc::ResultInvalidCurrentMemory;
+            return ResultInvalidCurrentMemory;
         }
 
         // Check that the value is less than the specified one.
         if (user_value >= value) {
             slp.CancelSleep();
-            return Svc::ResultInvalidState;
+            return ResultInvalidState;
         }
 
         // Check that the timeout is non-zero.
         if (timeout == 0) {
             slp.CancelSleep();
-            return Svc::ResultTimedOut;
+            return ResultTimedOut;
         }
 
         // Set the arbiter.
-        cur_thread->SetAddressArbiter(std::addressof(thread_tree), addr);
+        cur_thread->SetAddressArbiter(&thread_tree, addr);
         thread_tree.insert(*cur_thread);
         cur_thread->SetState(ThreadState::Waiting);
         cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
@@ -293,7 +275,7 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
 
     // Get the result.
     KSynchronizationObject* dummy{};
-    return cur_thread->GetWaitResult(std::addressof(dummy));
+    return cur_thread->GetWaitResult(&dummy);
 }
 
 ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
@@ -306,33 +288,33 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
         // Check that the thread isn't terminating.
         if (cur_thread->IsTerminationRequested()) {
             slp.CancelSleep();
-            return Svc::ResultTerminationRequested;
+            return ResultTerminationRequested;
         }
 
         // Set the synced object.
-        cur_thread->SetSyncedObject(nullptr, Svc::ResultTimedOut);
+        cur_thread->SetSyncedObject(nullptr, ResultTimedOut);
 
         // Read the value from userspace.
         s32 user_value{};
-        if (!ReadFromUser(system, std::addressof(user_value), addr)) {
+        if (!ReadFromUser(system, &user_value, addr)) {
             slp.CancelSleep();
-            return Svc::ResultInvalidCurrentMemory;
+            return ResultInvalidCurrentMemory;
         }
 
         // Check that the value is equal.
         if (value != user_value) {
             slp.CancelSleep();
-            return Svc::ResultInvalidState;
+            return ResultInvalidState;
         }
 
         // Check that the timeout is non-zero.
         if (timeout == 0) {
             slp.CancelSleep();
-            return Svc::ResultTimedOut;
+            return ResultTimedOut;
         }
 
         // Set the arbiter.
-        cur_thread->SetAddressArbiter(std::addressof(thread_tree), addr);
+        cur_thread->SetAddressArbiter(&thread_tree, addr);
         thread_tree.insert(*cur_thread);
         cur_thread->SetState(ThreadState::Waiting);
         cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
@@ -353,7 +335,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
 
     // Get the result.
     KSynchronizationObject* dummy{};
-    return cur_thread->GetWaitResult(std::addressof(dummy));
+    return cur_thread->GetWaitResult(&dummy);
 }
 
 } // namespace Kernel

src/core/hle/kernel/k_affinity_mask.h

@@ -27,7 +27,7 @@ public:
     }
 
     [[nodiscard]] constexpr bool GetAffinity(s32 core) const {
-        return this->mask & GetCoreBit(core);
+        return (this->mask & GetCoreBit(core)) != 0;
     }
 
     constexpr void SetAffinity(s32 core, bool set) {

src/core/hle/kernel/k_condition_variable.cpp

@@ -92,10 +92,10 @@ ResultCode KConditionVariable::SignalToAddress(VAddr addr) {
         // Write the value to userspace.
         if (!WriteToUser(system, addr, std::addressof(next_value))) {
             if (next_owner_thread) {
-                next_owner_thread->SetSyncedObject(nullptr, Svc::ResultInvalidCurrentMemory);
+                next_owner_thread->SetSyncedObject(nullptr, ResultInvalidCurrentMemory);
             }
 
-            return Svc::ResultInvalidCurrentMemory;
+            return ResultInvalidCurrentMemory;
         }
     }
 
@@ -114,20 +114,20 @@ ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 val
             cur_thread->SetSyncedObject(nullptr, RESULT_SUCCESS);
 
             // Check if the thread should terminate.
-            R_UNLESS(!cur_thread->IsTerminationRequested(), Svc::ResultTerminationRequested);
+            R_UNLESS(!cur_thread->IsTerminationRequested(), ResultTerminationRequested);
 
             {
                 // Read the tag from userspace.
                 u32 test_tag{};
                 R_UNLESS(ReadFromUser(system, std::addressof(test_tag), addr),
-                         Svc::ResultInvalidCurrentMemory);
+                         ResultInvalidCurrentMemory);
 
                 // If the tag isn't the handle (with wait mask), we're done.
                 R_UNLESS(test_tag == (handle | Svc::HandleWaitMask), RESULT_SUCCESS);
 
                 // Get the lock owner thread.
                 owner_thread = kernel.CurrentProcess()->GetHandleTable().Get<KThread>(handle);
-                R_UNLESS(owner_thread, Svc::ResultInvalidHandle);
+                R_UNLESS(owner_thread, ResultInvalidHandle);
 
                 // Update the lock.
                 cur_thread->SetAddressKey(addr, value);
@@ -191,13 +191,13 @@ KThread* KConditionVariable::SignalImpl(KThread* thread) {
                 thread_to_close = owner_thread.get();
             } else {
                 // The lock was tagged with a thread that doesn't exist.
-                thread->SetSyncedObject(nullptr, Svc::ResultInvalidState);
+                thread->SetSyncedObject(nullptr, ResultInvalidState);
                 thread->Wakeup();
             }
         }
     } else {
         // If the address wasn't accessible, note so.
-        thread->SetSyncedObject(nullptr, Svc::ResultInvalidCurrentMemory);
+        thread->SetSyncedObject(nullptr, ResultInvalidCurrentMemory);
         thread->Wakeup();
     }
 
@@ -263,12 +263,12 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout)
         KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
 
         // Set the synced object.
-        cur_thread->SetSyncedObject(nullptr, Svc::ResultTimedOut);
+        cur_thread->SetSyncedObject(nullptr, ResultTimedOut);
 
         // Check that the thread isn't terminating.
         if (cur_thread->IsTerminationRequested()) {
             slp.CancelSleep();
-            return Svc::ResultTerminationRequested;
+            return ResultTerminationRequested;
         }
 
         // Update the value and process for the next owner.
@@ -302,7 +302,7 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout)
             // Write the value to userspace.
             if (!WriteToUser(system, addr, std::addressof(next_value))) {
                 slp.CancelSleep();
-                return Svc::ResultInvalidCurrentMemory;
+                return ResultInvalidCurrentMemory;
             }
         }
 

src/core/hle/kernel/k_event.cpp

@@ -0,0 +1,32 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
+
+namespace Kernel {
+
+KEvent::KEvent(KernelCore& kernel, std::string&& name) : Object{kernel, std::move(name)} {}
+
+KEvent::~KEvent() = default;
+
+std::shared_ptr<KEvent> KEvent::Create(KernelCore& kernel, std::string&& name) {
+    return std::make_shared<KEvent>(kernel, std::move(name));
+}
+
+void KEvent::Initialize() {
+    // Create our sub events.
+    readable_event = std::make_shared<KReadableEvent>(kernel, GetName() + ":Readable");
+    writable_event = std::make_shared<KWritableEvent>(kernel, GetName() + ":Writable");
+
+    // Initialize our sub sessions.
+    readable_event->Initialize(this);
+    writable_event->Initialize(this);
+
+    // Mark initialized.
+    initialized = true;
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_event.h

@@ -0,0 +1,57 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/kernel/object.h"
+
+namespace Kernel {
+
+class KernelCore;
+class KReadableEvent;
+class KWritableEvent;
+
+class KEvent final : public Object {
+public:
+    explicit KEvent(KernelCore& kernel, std::string&& name);
+    ~KEvent() override;
+
+    static std::shared_ptr<KEvent> Create(KernelCore& kernel, std::string&& name);
+
+    void Initialize();
+
+    void Finalize() override {}
+
+    std::string GetTypeName() const override {
+        return "KEvent";
+    }
+
+    static constexpr HandleType HANDLE_TYPE = HandleType::Event;
+    HandleType GetHandleType() const override {
+        return HANDLE_TYPE;
+    }
+
+    std::shared_ptr<KReadableEvent>& GetReadableEvent() {
+        return readable_event;
+    }
+
+    std::shared_ptr<KWritableEvent>& GetWritableEvent() {
+        return writable_event;
+    }
+
+    const std::shared_ptr<KReadableEvent>& GetReadableEvent() const {
+        return readable_event;
+    }
+
+    const std::shared_ptr<KWritableEvent>& GetWritableEvent() const {
+        return writable_event;
+    }
+
+private:
+    std::shared_ptr<KReadableEvent> readable_event;
+    std::shared_ptr<KWritableEvent> writable_event;
+    bool initialized{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_priority_queue.h

@@ -24,11 +24,11 @@ template <typename T>
 concept KPriorityQueueAffinityMask = !std::is_reference_v<T> && requires(T & t) {
     { t.GetAffinityMask() }
     ->Common::ConvertibleTo<u64>;
-    {t.SetAffinityMask(std::declval<u64>())};
+    {t.SetAffinityMask(0)};
 
-    { t.GetAffinity(std::declval<int32_t>()) }
+    { t.GetAffinity(0) }
     ->std::same_as<bool>;
-    {t.SetAffinity(std::declval<int32_t>(), std::declval<bool>())};
+    {t.SetAffinity(0, false)};
     {t.SetAll()};
 };
 
@@ -42,11 +42,11 @@ concept KPriorityQueueMember = !std::is_reference_v<T> && requires(T & t) {
     ->std::same_as<T*>;
     { (typename T::QueueEntry()).GetPrev() }
     ->std::same_as<T*>;
-    { t.GetPriorityQueueEntry(std::declval<s32>()) }
+    { t.GetPriorityQueueEntry(0) }
     ->std::same_as<typename T::QueueEntry&>;
 
     {t.GetAffinityMask()};
-    { typename std::remove_cvref<decltype(t.GetAffinityMask())>::type() }
+    { std::remove_cvref_t<decltype(t.GetAffinityMask())>() }
     ->KPriorityQueueAffinityMask;
 
     { t.GetActiveCore() }
@@ -55,17 +55,17 @@ concept KPriorityQueueMember = !std::is_reference_v<T> && requires(T & t) {
     ->Common::ConvertibleTo<s32>;
 };
 
-template <typename Member, size_t _NumCores, int LowestPriority, int HighestPriority>
+template <typename Member, size_t NumCores_, int LowestPriority, int HighestPriority>
 requires KPriorityQueueMember<Member> class KPriorityQueue {
 public:
-    using AffinityMaskType = typename std::remove_cv_t<
-        typename std::remove_reference<decltype(std::declval<Member>().GetAffinityMask())>::type>;
+    using AffinityMaskType = std::remove_cv_t<
+        std::remove_reference_t<decltype(std::declval<Member>().GetAffinityMask())>>;
 
     static_assert(LowestPriority >= 0);
     static_assert(HighestPriority >= 0);
     static_assert(LowestPriority >= HighestPriority);
     static constexpr size_t NumPriority = LowestPriority - HighestPriority + 1;
-    static constexpr size_t NumCores = _NumCores;
+    static constexpr size_t NumCores = NumCores_;
 
     static constexpr bool IsValidCore(s32 core) {
         return 0 <= core && core < static_cast<s32>(NumCores);

src/core/hle/kernel/k_readable_event.cpp

@@ -0,0 +1,56 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include "common/assert.h"
+#include "common/common_funcs.h"
+#include "common/logging/log.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/object.h"
+#include "core/hle/kernel/svc_results.h"
+
+namespace Kernel {
+
+KReadableEvent::KReadableEvent(KernelCore& kernel, std::string&& name)
+    : KSynchronizationObject{kernel, std::move(name)} {}
+KReadableEvent::~KReadableEvent() = default;
+
+bool KReadableEvent::IsSignaled() const {
+    ASSERT(kernel.GlobalSchedulerContext().IsLocked());
+
+    return is_signaled;
+}
+
+ResultCode KReadableEvent::Signal() {
+    KScopedSchedulerLock lk{kernel};
+
+    if (!is_signaled) {
+        is_signaled = true;
+        NotifyAvailable();
+    }
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode KReadableEvent::Clear() {
+    Reset();
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode KReadableEvent::Reset() {
+    KScopedSchedulerLock lk{kernel};
+
+    if (!is_signaled) {
+        return ResultInvalidState;
+    }
+
+    is_signaled = false;
+    return RESULT_SUCCESS;
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_readable_event.h

@@ -0,0 +1,51 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/object.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+class KernelCore;
+class KEvent;
+
+class KReadableEvent final : public KSynchronizationObject {
+public:
+    explicit KReadableEvent(KernelCore& kernel, std::string&& name);
+    ~KReadableEvent() override;
+
+    std::string GetTypeName() const override {
+        return "KReadableEvent";
+    }
+
+    static constexpr HandleType HANDLE_TYPE = HandleType::ReadableEvent;
+    HandleType GetHandleType() const override {
+        return HANDLE_TYPE;
+    }
+
+    KEvent* GetParent() const {
+        return parent;
+    }
+
+    void Initialize(KEvent* parent_) {
+        is_signaled = false;
+        parent = parent_;
+    }
+
+    bool IsSignaled() const override;
+    void Finalize() override {}
+
+    ResultCode Signal();
+    ResultCode Clear();
+    ResultCode Reset();
+
+private:
+    bool is_signaled{};
+    KEvent* parent{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_resource_limit.cpp

@@ -75,7 +75,7 @@ s64 KResourceLimit::GetFreeValue(LimitableResource which) const {
 ResultCode KResourceLimit::SetLimitValue(LimitableResource which, s64 value) {
     const auto index = static_cast<std::size_t>(which);
     KScopedLightLock lk(lock);
-    R_UNLESS(current_values[index] <= value, Svc::ResultInvalidState);
+    R_UNLESS(current_values[index] <= value, ResultInvalidState);
 
     limit_values[index] = value;
 

src/core/hle/kernel/k_scoped_resource_reservation.h

@@ -0,0 +1,67 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+// This file references various implementation details from Atmosphere, an open-source firmware for
+// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "core/hle/kernel/k_resource_limit.h"
+#include "core/hle/kernel/process.h"
+
+namespace Kernel {
+
+class KScopedResourceReservation {
+public:
+    explicit KScopedResourceReservation(std::shared_ptr<KResourceLimit> l, LimitableResource r,
+                                        s64 v, s64 timeout)
+        : resource_limit(std::move(l)), value(v), resource(r) {
+        if (resource_limit && value) {
+            success = resource_limit->Reserve(resource, value, timeout);
+        } else {
+            success = true;
+        }
+    }
+
+    explicit KScopedResourceReservation(std::shared_ptr<KResourceLimit> l, LimitableResource r,
+                                        s64 v = 1)
+        : resource_limit(std::move(l)), value(v), resource(r) {
+        if (resource_limit && value) {
+            success = resource_limit->Reserve(resource, value);
+        } else {
+            success = true;
+        }
+    }
+
+    explicit KScopedResourceReservation(const Process* p, LimitableResource r, s64 v, s64 t)
+        : KScopedResourceReservation(p->GetResourceLimit(), r, v, t) {}
+
+    explicit KScopedResourceReservation(const Process* p, LimitableResource r, s64 v = 1)
+        : KScopedResourceReservation(p->GetResourceLimit(), r, v) {}
+
+    ~KScopedResourceReservation() noexcept {
+        if (resource_limit && value && success) {
+            // resource was not committed, release the reservation.
+            resource_limit->Release(resource, value);
+        }
+    }
+
+    /// Commit the resource reservation, destruction of this object does not release the resource
+    void Commit() {
+        resource_limit = nullptr;
+    }
+
+    [[nodiscard]] bool Succeeded() const {
+        return success;
+    }
+
+private:
+    std::shared_ptr<KResourceLimit> resource_limit;
+    s64 value;
+    LimitableResource resource;
+    bool success;
+};
+
+} // namespace Kernel

src/core/hle/kernel/k_synchronization_object.cpp

@@ -40,20 +40,20 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
         // Check if the timeout is zero.
         if (timeout == 0) {
             slp.CancelSleep();
-            return Svc::ResultTimedOut;
+            return ResultTimedOut;
         }
 
         // Check if the thread should terminate.
         if (thread->IsTerminationRequested()) {
             slp.CancelSleep();
-            return Svc::ResultTerminationRequested;
+            return ResultTerminationRequested;
         }
 
         // Check if waiting was canceled.
         if (thread->IsWaitCancelled()) {
             slp.CancelSleep();
             thread->ClearWaitCancelled();
-            return Svc::ResultCancelled;
+            return ResultCancelled;
         }
 
         // Add the waiters.
@@ -75,7 +75,7 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
 
         // Mark the thread as waiting.
         thread->SetCancellable();
-        thread->SetSyncedObject(nullptr, Svc::ResultTimedOut);
+        thread->SetSyncedObject(nullptr, ResultTimedOut);
         thread->SetState(ThreadState::Waiting);
         thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Synchronization);
     }
@@ -132,6 +132,9 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
 
 KSynchronizationObject::KSynchronizationObject(KernelCore& kernel) : Object{kernel} {}
 
+KSynchronizationObject::KSynchronizationObject(KernelCore& kernel, std::string&& name)
+    : Object{kernel, std::move(name)} {}
+
 KSynchronizationObject::~KSynchronizationObject() = default;
 
 void KSynchronizationObject::NotifyAvailable(ResultCode result) {

src/core/hle/kernel/k_synchronization_object.h

@@ -33,6 +33,7 @@ public:
 
 protected:
     explicit KSynchronizationObject(KernelCore& kernel);
+    explicit KSynchronizationObject(KernelCore& kernel, std::string&& name);
     virtual ~KSynchronizationObject();
 
     void NotifyAvailable(ResultCode result);

src/core/hle/kernel/k_thread.cpp

@@ -18,7 +18,6 @@
 #include "core/core.h"
 #include "core/cpu_manager.h"
 #include "core/hardware_properties.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_condition_variable.h"
 #include "core/hle/kernel/k_resource_limit.h"
@@ -127,7 +126,7 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
 
     // Set core ID and wait result.
     core_id = phys_core;
-    wait_result = Svc::ResultNoSynchronizationObject;
+    wait_result = ResultNoSynchronizationObject;
 
     // Set priorities.
     priority = prio;
@@ -238,7 +237,7 @@ void KThread::Finalize() {
         while (it != waiter_list.end()) {
             // The thread shouldn't be a kernel waiter.
             it->SetLockOwner(nullptr);
-            it->SetSyncedObject(nullptr, Svc::ResultInvalidState);
+            it->SetSyncedObject(nullptr, ResultInvalidState);
             it->Wakeup();
             it = waiter_list.erase(it);
         }
@@ -447,7 +446,7 @@ ResultCode KThread::SetCoreMask(s32 core_id, u64 v_affinity_mask) {
         // If the core id is no-update magic, preserve the ideal core id.
         if (core_id == Svc::IdealCoreNoUpdate) {
             core_id = virtual_ideal_core_id;
-            R_UNLESS(((1ULL << core_id) & v_affinity_mask) != 0, Svc::ResultInvalidCombination);
+            R_UNLESS(((1ULL << core_id) & v_affinity_mask) != 0, ResultInvalidCombination);
         }
 
         // Set the virtual core/affinity mask.
@@ -526,7 +525,7 @@ ResultCode KThread::SetCoreMask(s32 core_id, u64 v_affinity_mask) {
                 if (GetStackParameters().is_pinned) {
                     // Verify that the current thread isn't terminating.
                     R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(),
-                             Svc::ResultTerminationRequested);
+                             ResultTerminationRequested);
 
                     // Note that the thread was pinned.
                     thread_is_pinned = true;
@@ -604,7 +603,7 @@ void KThread::WaitCancel() {
             sleeping_queue->WakeupThread(this);
             wait_cancelled = true;
         } else {
-            SetSyncedObject(nullptr, Svc::ResultCancelled);
+            SetSyncedObject(nullptr, ResultCancelled);
             SetState(ThreadState::Runnable);
             wait_cancelled = false;
         }
@@ -663,12 +662,12 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) {
         // Verify our state.
         const auto cur_state = GetState();
         R_UNLESS((cur_state == ThreadState::Waiting || cur_state == ThreadState::Runnable),
-                 Svc::ResultInvalidState);
+                 ResultInvalidState);
 
         // Either pause or resume.
         if (activity == Svc::ThreadActivity::Paused) {
             // Verify that we're not suspended.
-            R_UNLESS(!IsSuspendRequested(SuspendType::Thread), Svc::ResultInvalidState);
+            R_UNLESS(!IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
 
             // Suspend.
             RequestSuspend(SuspendType::Thread);
@@ -676,7 +675,7 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) {
             ASSERT(activity == Svc::ThreadActivity::Runnable);
 
             // Verify that we're suspended.
-            R_UNLESS(IsSuspendRequested(SuspendType::Thread), Svc::ResultInvalidState);
+            R_UNLESS(IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
 
             // Resume.
             Resume(SuspendType::Thread);
@@ -698,7 +697,7 @@ ResultCode KThread::SetActivity(Svc::ThreadActivity activity) {
             if (GetStackParameters().is_pinned) {
                 // Verify that the current thread isn't terminating.
                 R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(),
-                         Svc::ResultTerminationRequested);
+                         ResultTerminationRequested);
 
                 // Note that the thread was pinned and not current.
                 thread_is_pinned = true;
@@ -745,7 +744,7 @@ ResultCode KThread::GetThreadContext3(std::vector<u8>& out) {
         KScopedSchedulerLock sl{kernel};
 
         // Verify that we're suspended.
-        R_UNLESS(IsSuspendRequested(SuspendType::Thread), Svc::ResultInvalidState);
+        R_UNLESS(IsSuspendRequested(SuspendType::Thread), ResultInvalidState);
 
         // If we're not terminating, get the thread's user context.
         if (!IsTerminationRequested()) {
@@ -905,12 +904,11 @@ ResultCode KThread::Run() {
         KScopedSchedulerLock lk{kernel};
 
         // If either this thread or the current thread are requesting termination, note it.
-        R_UNLESS(!IsTerminationRequested(), Svc::ResultTerminationRequested);
-        R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(),
-                 Svc::ResultTerminationRequested);
+        R_UNLESS(!IsTerminationRequested(), ResultTerminationRequested);
+        R_UNLESS(!GetCurrentThread(kernel).IsTerminationRequested(), ResultTerminationRequested);
 
         // Ensure our thread state is correct.
-        R_UNLESS(GetState() == ThreadState::Initialized, Svc::ResultInvalidState);
+        R_UNLESS(GetState() == ThreadState::Initialized, ResultInvalidState);
 
         // If the current thread has been asked to suspend, suspend it and retry.
         if (GetCurrentThread(kernel).IsSuspended()) {
@@ -962,7 +960,7 @@ ResultCode KThread::Sleep(s64 timeout) {
         // Check if the thread should terminate.
         if (IsTerminationRequested()) {
             slp.CancelSleep();
-            return Svc::ResultTerminationRequested;
+            return ResultTerminationRequested;
         }
 
         // Mark the thread as waiting.

src/core/hle/kernel/k_writable_event.cpp

@@ -0,0 +1,27 @@
+// Copyright 2021 yuzu emulator team
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
+
+namespace Kernel {
+
+KWritableEvent::KWritableEvent(KernelCore& kernel, std::string&& name)
+    : Object{kernel, std::move(name)} {}
+KWritableEvent::~KWritableEvent() = default;
+
+void KWritableEvent::Initialize(KEvent* parent_) {
+    parent = parent_;
+}
+
+ResultCode KWritableEvent::Signal() {
+    return parent->GetReadableEvent()->Signal();
+}
+
+ResultCode KWritableEvent::Clear() {
+    return parent->GetReadableEvent()->Clear();
+}
+
+} // namespace Kernel

src/core/hle/kernel/k_writable_event.h

@@ -0,0 +1,44 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/hle/kernel/object.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+class KernelCore;
+class KEvent;
+
+class KWritableEvent final : public Object {
+public:
+    explicit KWritableEvent(KernelCore& kernel, std::string&& name);
+    ~KWritableEvent() override;
+
+    std::string GetTypeName() const override {
+        return "KWritableEvent";
+    }
+
+    static constexpr HandleType HANDLE_TYPE = HandleType::WritableEvent;
+    HandleType GetHandleType() const override {
+        return HANDLE_TYPE;
+    }
+
+    void Initialize(KEvent* parent_);
+
+    void Finalize() override {}
+
+    ResultCode Signal();
+    ResultCode Clear();
+
+    KEvent* GetParent() const {
+        return parent;
+    }
+
+private:
+    KEvent* parent{};
+};
+
+} // namespace Kernel

src/core/hle/kernel/kernel.cpp

@@ -26,7 +26,6 @@
 #include "core/device_memory.h"
 #include "core/hardware_properties.h"
 #include "core/hle/kernel/client_port.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scheduler.h"
@@ -39,6 +38,7 @@
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/service_thread.h"
 #include "core/hle/kernel/shared_memory.h"
+#include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/time_manager.h"
 #include "core/hle/lock.h"
 #include "core/hle/result.h"
@@ -141,11 +141,17 @@ struct KernelCore::Impl {
         ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Events, 700).IsSuccess());
         ASSERT(system_resource_limit->SetLimitValue(LimitableResource::TransferMemory, 200)
                    .IsSuccess());
-        ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Sessions, 900).IsSuccess());
+        ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Sessions, 933).IsSuccess());
 
-        if (!system_resource_limit->Reserve(LimitableResource::PhysicalMemory, 0x60000)) {
+        // Derived from recent software updates. The kernel reserves 27MB
+        constexpr u64 kernel_size{0x1b00000};
+        if (!system_resource_limit->Reserve(LimitableResource::PhysicalMemory, kernel_size)) {
             UNREACHABLE();
         }
+        // Reserve secure applet memory, introduced in firmware 5.0.0
+        constexpr u64 secure_applet_memory_size{0x400000};
+        ASSERT(system_resource_limit->Reserve(LimitableResource::PhysicalMemory,
+                                              secure_applet_memory_size));
     }
 
     void InitializePreemption(KernelCore& kernel) {
@@ -302,8 +308,11 @@ struct KernelCore::Impl {
         // Allocate slab heaps
         user_slab_heap_pages = std::make_unique<Memory::SlabHeap<Memory::Page>>();
 
+        constexpr u64 user_slab_heap_size{0x1ef000};
+        // Reserve slab heaps
+        ASSERT(
+            system_resource_limit->Reserve(LimitableResource::PhysicalMemory, user_slab_heap_size));
         // Initialize slab heaps
-        constexpr u64 user_slab_heap_size{0x3de000};
         user_slab_heap_pages->Initialize(
             system.DeviceMemory().GetPointer(Core::DramMemoryMap::SlabHeapBase),
             user_slab_heap_size);

src/core/hle/kernel/memory/memory_manager.cpp

@@ -8,9 +8,9 @@
 #include "common/assert.h"
 #include "common/common_types.h"
 #include "common/scope_exit.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/memory/memory_manager.h"
 #include "core/hle/kernel/memory/page_linked_list.h"
+#include "core/hle/kernel/svc_results.h"
 
 namespace Kernel::Memory {
 
@@ -95,7 +95,7 @@ ResultCode MemoryManager::Allocate(PageLinkedList& page_list, std::size_t num_pa
     // Choose a heap based on our page size request
     const s32 heap_index{PageHeap::GetBlockIndex(num_pages)};
     if (heap_index < 0) {
-        return ERR_OUT_OF_MEMORY;
+        return ResultOutOfMemory;
     }
 
     // TODO (bunnei): Support multiple managers
@@ -140,7 +140,7 @@ ResultCode MemoryManager::Allocate(PageLinkedList& page_list, std::size_t num_pa
 
     // Only succeed if we allocated as many pages as we wanted
     if (num_pages) {
-        return ERR_OUT_OF_MEMORY;
+        return ResultOutOfMemory;
     }
 
     // We succeeded!

src/core/hle/kernel/memory/page_table.cpp

@@ -6,8 +6,7 @@
 #include "common/assert.h"
 #include "common/scope_exit.h"
 #include "core/core.h"
-#include "core/hle/kernel/errors.h"
-#include "core/hle/kernel/k_resource_limit.h"
+#include "core/hle/kernel/k_scoped_resource_reservation.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory/address_space_info.h"
 #include "core/hle/kernel/memory/memory_block.h"
@@ -16,6 +15,7 @@
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/memory/system_control.h"
 #include "core/hle/kernel/process.h"
+#include "core/hle/kernel/svc_results.h"
 #include "core/memory.h"
 
 namespace Kernel::Memory {
@@ -141,7 +141,7 @@ ResultCode PageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_t
         (alias_region_size + heap_region_size + stack_region_size + kernel_map_region_size)};
     if (alloc_size < needed_size) {
         UNREACHABLE();
-        return ERR_OUT_OF_MEMORY;
+        return ResultOutOfMemory;
     }
 
     const std::size_t remaining_size{alloc_size - needed_size};
@@ -277,11 +277,11 @@ ResultCode PageTable::MapProcessCode(VAddr addr, std::size_t num_pages, MemorySt
     const u64 size{num_pages * PageSize};
 
     if (!CanContain(addr, size, state)) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     if (IsRegionMapped(addr, size)) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     PageLinkedList page_linked_list;
@@ -307,7 +307,7 @@ ResultCode PageTable::MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::
                                   MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped));
 
     if (IsRegionMapped(dst_addr, size)) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     PageLinkedList page_linked_list;
@@ -409,27 +409,25 @@ ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
         return RESULT_SUCCESS;
     }
 
-    auto process{system.Kernel().CurrentProcess()};
     const std::size_t remaining_size{size - mapped_size};
     const std::size_t remaining_pages{remaining_size / PageSize};
 
-    if (process->GetResourceLimit() &&
-        !process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, remaining_size)) {
-        return ERR_RESOURCE_LIMIT_EXCEEDED;
+    // Reserve the memory from the process resource limit.
+    KScopedResourceReservation memory_reservation(
+        system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
+        remaining_size);
+    if (!memory_reservation.Succeeded()) {
+        LOG_ERROR(Kernel, "Could not reserve remaining {:X} bytes", remaining_size);
+        return ResultResourceLimitedExceeded;
     }
 
     PageLinkedList page_linked_list;
-    {
-        auto block_guard = detail::ScopeExit([&] {
-            system.Kernel().MemoryManager().Free(page_linked_list, remaining_pages, memory_pool);
-            process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, remaining_size);
-        });
 
-        CASCADE_CODE(system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages,
-                                                              memory_pool));
+    CASCADE_CODE(
+        system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages, memory_pool));
 
-        block_guard.Cancel();
-    }
+    // We succeeded, so commit the memory reservation.
+    memory_reservation.Commit();
 
     MapPhysicalMemory(page_linked_list, addr, end_addr);
 
@@ -454,12 +452,12 @@ ResultCode PageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
     block_manager->IterateForRange(addr, end_addr, [&](const MemoryInfo& info) {
         if (info.state == MemoryState::Normal) {
             if (info.attribute != MemoryAttribute::None) {
-                result = ERR_INVALID_ADDRESS_STATE;
+                result = ResultInvalidCurrentMemory;
                 return;
             }
             mapped_size += GetSizeInRange(info, addr, end_addr);
         } else if (info.state != MemoryState::Free) {
-            result = ERR_INVALID_ADDRESS_STATE;
+            result = ResultInvalidCurrentMemory;
         }
     });
 
@@ -526,7 +524,7 @@ ResultCode PageTable::Map(VAddr dst_addr, VAddr src_addr, std::size_t size) {
         MemoryAttribute::Mask, MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped));
 
     if (IsRegionMapped(dst_addr, size)) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     PageLinkedList page_linked_list;
@@ -577,7 +575,7 @@ ResultCode PageTable::Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size) {
     AddRegionToPages(dst_addr, num_pages, dst_pages);
 
     if (!dst_pages.IsEqual(src_pages)) {
-        return ERR_INVALID_MEMORY_RANGE;
+        return ResultInvalidMemoryRange;
     }
 
     {
@@ -626,11 +624,11 @@ ResultCode PageTable::MapPages(VAddr addr, PageLinkedList& page_linked_list, Mem
     const std::size_t size{num_pages * PageSize};
 
     if (!CanContain(addr, size, state)) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     if (IsRegionMapped(addr, num_pages * PageSize)) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     CASCADE_CODE(MapPages(addr, page_linked_list, perm));
@@ -768,7 +766,7 @@ ResultCode PageTable::SetHeapCapacity(std::size_t new_heap_capacity) {
 ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
 
     if (size > heap_region_end - heap_region_start) {
-        return ERR_OUT_OF_MEMORY;
+        return ResultOutOfMemory;
     }
 
     const u64 previous_heap_size{GetHeapSize()};
@@ -781,10 +779,14 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
 
         const u64 delta{size - previous_heap_size};
 
-        auto process{system.Kernel().CurrentProcess()};
-        if (process->GetResourceLimit() && delta != 0 &&
-            !process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, delta)) {
-            return ERR_RESOURCE_LIMIT_EXCEEDED;
+        // Reserve memory for the heap extension.
+        KScopedResourceReservation memory_reservation(
+            system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
+            delta);
+
+        if (!memory_reservation.Succeeded()) {
+            LOG_ERROR(Kernel, "Could not reserve heap extension of size {:X} bytes", delta);
+            return ResultResourceLimitedExceeded;
         }
 
         PageLinkedList page_linked_list;
@@ -794,12 +796,15 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
             system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool));
 
         if (IsRegionMapped(current_heap_addr, delta)) {
-            return ERR_INVALID_ADDRESS_STATE;
+            return ResultInvalidCurrentMemory;
         }
 
         CASCADE_CODE(
             Operate(current_heap_addr, num_pages, page_linked_list, OperationType::MapGroup));
 
+        // Succeeded in allocation, commit the resource reservation
+        memory_reservation.Commit();
+
         block_manager->Update(current_heap_addr, num_pages, MemoryState::Normal,
                               MemoryPermission::ReadAndWrite);
 
@@ -816,17 +821,17 @@ ResultVal<VAddr> PageTable::AllocateAndMapMemory(std::size_t needed_num_pages, s
     std::lock_guard lock{page_table_lock};
 
     if (!CanContain(region_start, region_num_pages * PageSize, state)) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     if (region_num_pages <= needed_num_pages) {
-        return ERR_OUT_OF_MEMORY;
+        return ResultOutOfMemory;
     }
 
     const VAddr addr{
         AllocateVirtualMemory(region_start, region_num_pages, needed_num_pages, align)};
     if (!addr) {
-        return ERR_OUT_OF_MEMORY;
+        return ResultOutOfMemory;
     }
 
     if (is_map_only) {
@@ -1105,13 +1110,13 @@ constexpr ResultCode PageTable::CheckMemoryState(const MemoryInfo& info, MemoryS
                                                  MemoryAttribute attr) const {
     // Validate the states match expectation
     if ((info.state & state_mask) != state) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
     if ((info.perm & perm_mask) != perm) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
     if ((info.attribute & attr_mask) != attr) {
-        return ERR_INVALID_ADDRESS_STATE;
+        return ResultInvalidCurrentMemory;
     }
 
     return RESULT_SUCCESS;
@@ -1138,14 +1143,14 @@ ResultCode PageTable::CheckMemoryState(MemoryState* out_state, MemoryPermission*
     while (true) {
         // Validate the current block
         if (!(info.state == first_state)) {
-            return ERR_INVALID_ADDRESS_STATE;
+            return ResultInvalidCurrentMemory;
         }
         if (!(info.perm == first_perm)) {
-            return ERR_INVALID_ADDRESS_STATE;
+            return ResultInvalidCurrentMemory;
         }
         if (!((info.attribute | static_cast<MemoryAttribute>(ignore_attr)) ==
               (first_attr | static_cast<MemoryAttribute>(ignore_attr)))) {
-            return ERR_INVALID_ADDRESS_STATE;
+            return ResultInvalidCurrentMemory;
         }
 
         // Validate against the provided masks

src/core/hle/kernel/object.cpp

@@ -8,7 +8,10 @@
 
 namespace Kernel {
 
-Object::Object(KernelCore& kernel) : kernel{kernel}, object_id{kernel.CreateNewObjectID()} {}
+Object::Object(KernelCore& kernel_)
+    : kernel{kernel_}, object_id{kernel_.CreateNewObjectID()}, name{"[UNKNOWN KERNEL OBJECT]"} {}
+Object::Object(KernelCore& kernel_, std::string&& name_)
+    : kernel{kernel_}, object_id{kernel_.CreateNewObjectID()}, name{std::move(name_)} {}
 Object::~Object() = default;
 
 bool Object::IsWaitable() const {
@@ -21,6 +24,7 @@ bool Object::IsWaitable() const {
         return true;
 
     case HandleType::Unknown:
+    case HandleType::Event:
     case HandleType::WritableEvent:
     case HandleType::SharedMemory:
     case HandleType::TransferMemory:

src/core/hle/kernel/object.h

@@ -18,6 +18,7 @@ using Handle = u32;
 
 enum class HandleType : u32 {
     Unknown,
+    Event,
     WritableEvent,
     ReadableEvent,
     SharedMemory,
@@ -34,7 +35,8 @@ enum class HandleType : u32 {
 
 class Object : NonCopyable, public std::enable_shared_from_this<Object> {
 public:
-    explicit Object(KernelCore& kernel);
+    explicit Object(KernelCore& kernel_);
+    explicit Object(KernelCore& kernel_, std::string&& name_);
     virtual ~Object();
 
     /// Returns a unique identifier for the object. For debugging purposes only.
@@ -46,7 +48,7 @@ public:
         return "[BAD KERNEL OBJECT TYPE]";
     }
     virtual std::string GetName() const {
-        return "[UNKNOWN KERNEL OBJECT]";
+        return name;
     }
     virtual HandleType GetHandleType() const = 0;
 
@@ -69,6 +71,7 @@ protected:
 
 private:
     std::atomic<u32> object_id{0};
+    std::string name;
 };
 
 template <typename T>

src/core/hle/kernel/process.cpp

@@ -14,15 +14,16 @@
 #include "core/device_memory.h"
 #include "core/file_sys/program_metadata.h"
 #include "core/hle/kernel/code_set.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_scoped_resource_reservation.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory/memory_block_manager.h"
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/memory/slab_heap.h"
 #include "core/hle/kernel/process.h"
+#include "core/hle/kernel/svc_results.h"
 #include "core/hle/lock.h"
 #include "core/memory.h"
 #include "core/settings.h"
@@ -38,6 +39,7 @@ namespace {
  */
 void SetupMainThread(Core::System& system, Process& owner_process, u32 priority, VAddr stack_top) {
     const VAddr entry_point = owner_process.PageTable().GetCodeRegionStart();
+    ASSERT(owner_process.GetResourceLimit()->Reserve(LimitableResource::Threads, 1));
     auto thread_res = KThread::Create(system, ThreadType::User, "main", entry_point, priority, 0,
                                       owner_process.GetIdealCoreId(), stack_top, &owner_process);
 
@@ -116,6 +118,9 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name,
 
     std::shared_ptr<Process> process = std::make_shared<Process>(system);
     process->name = std::move(name);
+
+    // TODO: This is inaccurate
+    // The process should hold a reference to the kernel-wide resource limit.
     process->resource_limit = std::make_shared<KResourceLimit>(kernel, system);
     process->status = ProcessStatus::Created;
     process->program_id = 0;
@@ -154,6 +159,9 @@ void Process::DecrementThreadCount() {
 }
 
 u64 Process::GetTotalPhysicalMemoryAvailable() const {
+    // TODO: This is expected to always return the application memory pool size after accurately
+    // reserving kernel resources. The current workaround uses a process-local resource limit of
+    // application memory pool size, which is inaccurate.
     const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) +
                        page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
                        main_thread_stack_size};
@@ -241,18 +249,16 @@ void Process::UnregisterThread(const KThread* thread) {
     thread_list.remove(thread);
 }
 
-ResultCode Process::ClearSignalState() {
-    KScopedSchedulerLock lock(system.Kernel());
-    if (status == ProcessStatus::Exited) {
-        LOG_ERROR(Kernel, "called on a terminated process instance.");
-        return ERR_INVALID_STATE;
-    }
+ResultCode Process::Reset() {
+    // Lock the process and the scheduler.
+    KScopedLightLock lk(state_lock);
+    KScopedSchedulerLock sl{kernel};
 
-    if (!is_signaled) {
-        LOG_ERROR(Kernel, "called on a process instance that isn't signaled.");
-        return ERR_INVALID_STATE;
-    }
+    // Validate that we're in a state that we can reset.
+    R_UNLESS(status != ProcessStatus::Exited, ResultInvalidState);
+    R_UNLESS(is_signaled, ResultInvalidState);
 
+    // Clear signaled.
     is_signaled = false;
     return RESULT_SUCCESS;
 }
@@ -265,6 +271,17 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
     system_resource_size = metadata.GetSystemResourceSize();
     image_size = code_size;
 
+    // Set initial resource limits
+    resource_limit->SetLimitValue(
+        LimitableResource::PhysicalMemory,
+        kernel.MemoryManager().GetSize(Memory::MemoryManager::Pool::Application));
+    KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory,
+                                                  code_size + system_resource_size);
+    if (!memory_reservation.Succeeded()) {
+        LOG_ERROR(Kernel, "Could not reserve process memory requirements of size {:X} bytes",
+                  code_size + system_resource_size);
+        return ResultResourceLimitedExceeded;
+    }
     // Initialize proces address space
     if (const ResultCode result{
             page_table->InitializeForProcess(metadata.GetAddressSpaceType(), false, 0x8000000,
@@ -306,24 +323,22 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
         UNREACHABLE();
     }
 
-    // Set initial resource limits
-    resource_limit->SetLimitValue(
-        LimitableResource::PhysicalMemory,
-        kernel.MemoryManager().GetSize(Memory::MemoryManager::Pool::Application));
     resource_limit->SetLimitValue(LimitableResource::Threads, 608);
     resource_limit->SetLimitValue(LimitableResource::Events, 700);
     resource_limit->SetLimitValue(LimitableResource::TransferMemory, 128);
     resource_limit->SetLimitValue(LimitableResource::Sessions, 894);
-    ASSERT(resource_limit->Reserve(LimitableResource::PhysicalMemory, code_size));
 
     // Create TLS region
     tls_region_address = CreateTLSRegion();
+    memory_reservation.Commit();
 
     return handle_table.SetSize(capabilities.GetHandleTableSize());
 }
 
 void Process::Run(s32 main_thread_priority, u64 stack_size) {
     AllocateMainThreadStack(stack_size);
+    resource_limit->Reserve(LimitableResource::Threads, 1);
+    resource_limit->Reserve(LimitableResource::PhysicalMemory, main_thread_stack_size);
 
     const std::size_t heap_capacity{memory_usage_capacity - main_thread_stack_size - image_size};
     ASSERT(!page_table->SetHeapCapacity(heap_capacity).IsError());
@@ -331,8 +346,6 @@ void Process::Run(s32 main_thread_priority, u64 stack_size) {
     ChangeStatus(ProcessStatus::Running);
 
     SetupMainThread(system, *this, main_thread_priority, main_thread_stack_top);
-    resource_limit->Reserve(LimitableResource::Threads, 1);
-    resource_limit->Reserve(LimitableResource::PhysicalMemory, main_thread_stack_size);
 }
 
 void Process::PrepareForTermination() {
@@ -359,6 +372,11 @@ void Process::PrepareForTermination() {
     FreeTLSRegion(tls_region_address);
     tls_region_address = 0;
 
+    if (resource_limit) {
+        resource_limit->Release(LimitableResource::PhysicalMemory,
+                                main_thread_stack_size + image_size);
+    }
+
     ChangeStatus(ProcessStatus::Exited);
 }
 

src/core/hle/kernel/process.h

@@ -312,7 +312,7 @@ public:
     /// @pre The process must be in a signaled state. If this is called on a
     ///      process instance that is not signaled, ERR_INVALID_STATE will be
     ///      returned.
-    ResultCode ClearSignalState();
+    ResultCode Reset();
 
     /**
      * Loads process-specifics configuration info with metadata provided

src/core/hle/kernel/process_capability.cpp

@@ -6,10 +6,10 @@
 
 #include "common/bit_util.h"
 #include "common/logging/log.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/process_capability.h"
+#include "core/hle/kernel/svc_results.h"
 
 namespace Kernel {
 namespace {
@@ -123,13 +123,13 @@ ResultCode ProcessCapabilities::ParseCapabilities(const u32* capabilities,
             // If there's only one, then there's a problem.
             if (i >= num_capabilities) {
                 LOG_ERROR(Kernel, "Invalid combination! i={}", i);
-                return ERR_INVALID_COMBINATION;
+                return ResultInvalidCombination;
             }
 
             const auto size_flags = capabilities[i];
             if (GetCapabilityType(size_flags) != CapabilityType::MapPhysical) {
                 LOG_ERROR(Kernel, "Invalid capability type! size_flags={}", size_flags);
-                return ERR_INVALID_COMBINATION;
+                return ResultInvalidCombination;
             }
 
             const auto result = HandleMapPhysicalFlags(descriptor, size_flags, page_table);
@@ -159,7 +159,7 @@ ResultCode ProcessCapabilities::ParseSingleFlagCapability(u32& set_flags, u32& s
     const auto type = GetCapabilityType(flag);
 
     if (type == CapabilityType::Unset) {
-        return ERR_INVALID_CAPABILITY_DESCRIPTOR;
+        return ResultInvalidCapabilityDescriptor;
     }
 
     // Bail early on ignorable entries, as one would expect,
@@ -176,7 +176,7 @@ ResultCode ProcessCapabilities::ParseSingleFlagCapability(u32& set_flags, u32& s
         LOG_ERROR(Kernel,
                   "Attempted to initialize flags that may only be initialized once. set_flags={}",
                   set_flags);
-        return ERR_INVALID_COMBINATION;
+        return ResultInvalidCombination;
     }
     set_flags |= set_flag;
 
@@ -202,7 +202,7 @@ ResultCode ProcessCapabilities::ParseSingleFlagCapability(u32& set_flags, u32& s
     }
 
     LOG_ERROR(Kernel, "Invalid capability type! type={}", type);
-    return ERR_INVALID_CAPABILITY_DESCRIPTOR;
+    return ResultInvalidCapabilityDescriptor;
 }
 
 void ProcessCapabilities::Clear() {
@@ -225,7 +225,7 @@ ResultCode ProcessCapabilities::HandlePriorityCoreNumFlags(u32 flags) {
     if (priority_mask != 0 || core_mask != 0) {
         LOG_ERROR(Kernel, "Core or priority mask are not zero! priority_mask={}, core_mask={}",
                   priority_mask, core_mask);
-        return ERR_INVALID_CAPABILITY_DESCRIPTOR;
+        return ResultInvalidCapabilityDescriptor;
     }
 
     const u32 core_num_min = (flags >> 16) & 0xFF;
@@ -233,7 +233,7 @@ ResultCode ProcessCapabilities::HandlePriorityCoreNumFlags(u32 flags) {
     if (core_num_min > core_num_max) {
         LOG_ERROR(Kernel, "Core min is greater than core max! core_num_min={}, core_num_max={}",
                   core_num_min, core_num_max);
-        return ERR_INVALID_COMBINATION;
+        return ResultInvalidCombination;
     }
 
     const u32 priority_min = (flags >> 10) & 0x3F;
@@ -242,13 +242,13 @@ ResultCode ProcessCapabilities::HandlePriorityCoreNumFlags(u32 flags) {
         LOG_ERROR(Kernel,
                   "Priority min is greater than priority max! priority_min={}, priority_max={}",
                   core_num_min, priority_max);
-        return ERR_INVALID_COMBINATION;
+        return ResultInvalidCombination;
     }
 
     // The switch only has 4 usable cores.
     if (core_num_max >= 4) {
         LOG_ERROR(Kernel, "Invalid max cores specified! core_num_max={}", core_num_max);
-        return ERR_INVALID_PROCESSOR_ID;
+        return ResultInvalidCoreId;
     }
 
     const auto make_mask = [](u64 min, u64 max) {
@@ -269,7 +269,7 @@ ResultCode ProcessCapabilities::HandleSyscallFlags(u32& set_svc_bits, u32 flags)
 
     // If we've already set this svc before, bail.
     if ((set_svc_bits & svc_bit) != 0) {
-        return ERR_INVALID_COMBINATION;
+        return ResultInvalidCombination;
     }
     set_svc_bits |= svc_bit;
 
@@ -283,7 +283,7 @@ ResultCode ProcessCapabilities::HandleSyscallFlags(u32& set_svc_bits, u32 flags)
 
         if (svc_number >= svc_capabilities.size()) {
             LOG_ERROR(Kernel, "Process svc capability is out of range! svc_number={}", svc_number);
-            return ERR_OUT_OF_RANGE;
+            return ResultOutOfRange;
         }
 
         svc_capabilities[svc_number] = true;
@@ -321,7 +321,7 @@ ResultCode ProcessCapabilities::HandleInterruptFlags(u32 flags) {
         if (interrupt >= interrupt_capabilities.size()) {
             LOG_ERROR(Kernel, "Process interrupt capability is out of range! svc_number={}",
                       interrupt);
-            return ERR_OUT_OF_RANGE;
+            return ResultOutOfRange;
         }
 
         interrupt_capabilities[interrupt] = true;
@@ -334,7 +334,7 @@ ResultCode ProcessCapabilities::HandleProgramTypeFlags(u32 flags) {
     const u32 reserved = flags >> 17;
     if (reserved != 0) {
         LOG_ERROR(Kernel, "Reserved value is non-zero! reserved={}", reserved);
-        return ERR_RESERVED_VALUE;
+        return ResultReservedValue;
     }
 
     program_type = static_cast<ProgramType>((flags >> 14) & 0b111);
@@ -354,7 +354,7 @@ ResultCode ProcessCapabilities::HandleKernelVersionFlags(u32 flags) {
         LOG_ERROR(Kernel,
                   "Kernel version is non zero or flags are too small! major_version={}, flags={}",
                   major_version, flags);
-        return ERR_INVALID_CAPABILITY_DESCRIPTOR;
+        return ResultInvalidCapabilityDescriptor;
     }
 
     kernel_version = flags;
@@ -365,7 +365,7 @@ ResultCode ProcessCapabilities::HandleHandleTableFlags(u32 flags) {
     const u32 reserved = flags >> 26;
     if (reserved != 0) {
         LOG_ERROR(Kernel, "Reserved value is non-zero! reserved={}", reserved);
-        return ERR_RESERVED_VALUE;
+        return ResultReservedValue;
     }
 
     handle_table_size = static_cast<s32>((flags >> 16) & 0x3FF);
@@ -376,7 +376,7 @@ ResultCode ProcessCapabilities::HandleDebugFlags(u32 flags) {
     const u32 reserved = flags >> 19;
     if (reserved != 0) {
         LOG_ERROR(Kernel, "Reserved value is non-zero! reserved={}", reserved);
-        return ERR_RESERVED_VALUE;
+        return ResultReservedValue;
     }
 
     is_debuggable = (flags & 0x20000) != 0;

src/core/hle/kernel/readable_event.cpp

@@ -1,52 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <algorithm>
-#include "common/assert.h"
-#include "common/logging/log.h"
-#include "core/hle/kernel/errors.h"
-#include "core/hle/kernel/k_scheduler.h"
-#include "core/hle/kernel/k_thread.h"
-#include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/readable_event.h"
-
-namespace Kernel {
-
-ReadableEvent::ReadableEvent(KernelCore& kernel) : KSynchronizationObject{kernel} {}
-ReadableEvent::~ReadableEvent() = default;
-
-void ReadableEvent::Signal() {
-    if (is_signaled) {
-        return;
-    }
-
-    is_signaled = true;
-    NotifyAvailable();
-}
-
-bool ReadableEvent::IsSignaled() const {
-    ASSERT(kernel.GlobalSchedulerContext().IsLocked());
-
-    return is_signaled;
-}
-
-void ReadableEvent::Clear() {
-    is_signaled = false;
-}
-
-ResultCode ReadableEvent::Reset() {
-    KScopedSchedulerLock lock(kernel);
-    if (!is_signaled) {
-        LOG_TRACE(Kernel, "Handle is not signaled! object_id={}, object_type={}, object_name={}",
-                  GetObjectId(), GetTypeName(), GetName());
-        return ERR_INVALID_STATE;
-    }
-
-    Clear();
-
-    return RESULT_SUCCESS;
-}
-
-} // namespace Kernel

src/core/hle/kernel/readable_event.h

@@ -1,59 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include "core/hle/kernel/k_synchronization_object.h"
-#include "core/hle/kernel/object.h"
-
-union ResultCode;
-
-namespace Kernel {
-
-class KernelCore;
-class WritableEvent;
-
-class ReadableEvent final : public KSynchronizationObject {
-    friend class WritableEvent;
-
-public:
-    ~ReadableEvent() override;
-
-    std::string GetTypeName() const override {
-        return "ReadableEvent";
-    }
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::ReadableEvent;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    /// Unconditionally clears the readable event's state.
-    void Clear();
-
-    /// Clears the readable event's state if and only if it
-    /// has already been signaled.
-    ///
-    /// @pre The event must be in a signaled state. If this event
-    ///      is in an unsignaled state and this function is called,
-    ///      then ERR_INVALID_STATE will be returned.
-    ResultCode Reset();
-
-    void Signal();
-
-    bool IsSignaled() const override;
-
-    void Finalize() override {}
-
-private:
-    explicit ReadableEvent(KernelCore& kernel);
-
-    bool is_signaled{};
-    std::string name; ///< Name of event (optional)
-};
-
-} // namespace Kernel

src/core/hle/kernel/server_port.cpp

@@ -5,11 +5,11 @@
 #include <tuple>
 #include "common/assert.h"
 #include "core/hle/kernel/client_port.h"
-#include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/server_port.h"
 #include "core/hle/kernel/server_session.h"
+#include "core/hle/kernel/svc_results.h"
 
 namespace Kernel {
 
@@ -18,7 +18,7 @@ ServerPort::~ServerPort() = default;
 
 ResultVal<std::shared_ptr<ServerSession>> ServerPort::Accept() {
     if (pending_sessions.empty()) {
-        return ERR_NOT_FOUND;
+        return ResultNotFound;
     }
 
     auto session = std::move(pending_sessions.back());

src/core/hle/kernel/session.cpp

@@ -4,15 +4,23 @@
 
 #include "common/assert.h"
 #include "core/hle/kernel/client_session.h"
+#include "core/hle/kernel/k_scoped_resource_reservation.h"
 #include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/session.h"
 
 namespace Kernel {
 
 Session::Session(KernelCore& kernel) : KSynchronizationObject{kernel} {}
-Session::~Session() = default;
+Session::~Session() {
+    // Release reserved resource when the Session pair was created.
+    kernel.GetSystemResourceLimit()->Release(LimitableResource::Sessions, 1);
+}
 
 Session::SessionPair Session::Create(KernelCore& kernel, std::string name) {
+    // Reserve a new session from the resource limit.
+    KScopedResourceReservation session_reservation(kernel.GetSystemResourceLimit(),
+                                                   LimitableResource::Sessions);
+    ASSERT(session_reservation.Succeeded());
     auto session{std::make_shared<Session>(kernel)};
     auto client_session{Kernel::ClientSession::Create(kernel, session, name + "_Client").Unwrap()};
     auto server_session{Kernel::ServerSession::Create(kernel, session, name + "_Server").Unwrap()};
@@ -21,6 +29,7 @@ Session::SessionPair Session::Create(KernelCore& kernel, std::string name) {
     session->client = client_session;
     session->server = server_session;
 
+    session_reservation.Commit();
     return std::make_pair(std::move(client_session), std::move(server_session));
 }
 

src/core/hle/kernel/shared_memory.cpp

@@ -4,6 +4,7 @@
 
 #include "common/assert.h"
 #include "core/core.h"
+#include "core/hle/kernel/k_scoped_resource_reservation.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/shared_memory.h"
@@ -13,7 +14,9 @@ namespace Kernel {
 SharedMemory::SharedMemory(KernelCore& kernel, Core::DeviceMemory& device_memory)
     : Object{kernel}, device_memory{device_memory} {}
 
-SharedMemory::~SharedMemory() = default;
+SharedMemory::~SharedMemory() {
+    kernel.GetSystemResourceLimit()->Release(LimitableResource::PhysicalMemory, size);
+}
 
 std::shared_ptr<SharedMemory> SharedMemory::Create(
     KernelCore& kernel, Core::DeviceMemory& device_memory, Process* owner_process,
@@ -21,6 +24,11 @@ std::shared_ptr<SharedMemory> SharedMemory::Create(
     Memory::MemoryPermission user_permission, PAddr physical_address, std::size_t size,
     std::string name) {
 
+    const auto resource_limit = kernel.GetSystemResourceLimit();
+    KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory,
+                                                  size);
+    ASSERT(memory_reservation.Succeeded());
+
     std::shared_ptr<SharedMemory> shared_memory{
         std::make_shared<SharedMemory>(kernel, device_memory)};
 
@@ -32,6 +40,7 @@ std::shared_ptr<SharedMemory> SharedMemory::Create(
     shared_memory->size = size;
     shared_memory->name = name;
 
+    memory_reservation.Commit();
     return shared_memory;
 }
 

src/core/hle/kernel/svc_results.h

@@ -1,4 +1,4 @@
-// Copyright 2020 yuzu emulator team
+// Copyright 2018 yuzu emulator team
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
@@ -6,20 +6,36 @@
 
 #include "core/hle/result.h"
 
-namespace Kernel::Svc {
+namespace Kernel {
 
+// Confirmed Switch kernel error codes
+
+constexpr ResultCode ResultMaxConnectionsReached{ErrorModule::Kernel, 7};
+constexpr ResultCode ResultInvalidCapabilityDescriptor{ErrorModule::Kernel, 14};
 constexpr ResultCode ResultNoSynchronizationObject{ErrorModule::Kernel, 57};
 constexpr ResultCode ResultTerminationRequested{ErrorModule::Kernel, 59};
+constexpr ResultCode ResultInvalidSize{ErrorModule::Kernel, 101};
 constexpr ResultCode ResultInvalidAddress{ErrorModule::Kernel, 102};
+constexpr ResultCode ResultOutOfResource{ErrorModule::Kernel, 103};
+constexpr ResultCode ResultOutOfMemory{ErrorModule::Kernel, 104};
+constexpr ResultCode ResultHandleTableFull{ErrorModule::Kernel, 105};
 constexpr ResultCode ResultInvalidCurrentMemory{ErrorModule::Kernel, 106};
+constexpr ResultCode ResultInvalidMemoryPermissions{ErrorModule::Kernel, 108};
+constexpr ResultCode ResultInvalidMemoryRange{ErrorModule::Kernel, 110};
 constexpr ResultCode ResultInvalidPriority{ErrorModule::Kernel, 112};
 constexpr ResultCode ResultInvalidCoreId{ErrorModule::Kernel, 113};
 constexpr ResultCode ResultInvalidHandle{ErrorModule::Kernel, 114};
+constexpr ResultCode ResultInvalidPointer{ErrorModule::Kernel, 115};
 constexpr ResultCode ResultInvalidCombination{ErrorModule::Kernel, 116};
 constexpr ResultCode ResultTimedOut{ErrorModule::Kernel, 117};
 constexpr ResultCode ResultCancelled{ErrorModule::Kernel, 118};
+constexpr ResultCode ResultOutOfRange{ErrorModule::Kernel, 119};
 constexpr ResultCode ResultInvalidEnumValue{ErrorModule::Kernel, 120};
+constexpr ResultCode ResultNotFound{ErrorModule::Kernel, 121};
 constexpr ResultCode ResultBusy{ErrorModule::Kernel, 122};
+constexpr ResultCode ResultSessionClosedByRemote{ErrorModule::Kernel, 123};
 constexpr ResultCode ResultInvalidState{ErrorModule::Kernel, 125};
+constexpr ResultCode ResultReservedValue{ErrorModule::Kernel, 126};
+constexpr ResultCode ResultResourceLimitedExceeded{ErrorModule::Kernel, 132};
 
-} // namespace Kernel::Svc
+} // namespace Kernel

src/core/hle/kernel/transfer_memory.cpp

@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include "core/hle/kernel/k_resource_limit.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/process.h"
@@ -17,6 +18,7 @@ TransferMemory::TransferMemory(KernelCore& kernel, Core::Memory::Memory& memory)
 TransferMemory::~TransferMemory() {
     // Release memory region when transfer memory is destroyed
     Reset();
+    owner_process->GetResourceLimit()->Release(LimitableResource::TransferMemory, 1);
 }
 
 std::shared_ptr<TransferMemory> TransferMemory::Create(KernelCore& kernel,

src/core/hle/kernel/writable_event.cpp

@@ -1,41 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <algorithm>
-#include "common/assert.h"
-#include "core/hle/kernel/k_thread.h"
-#include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/object.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
-
-namespace Kernel {
-
-WritableEvent::WritableEvent(KernelCore& kernel) : Object{kernel} {}
-WritableEvent::~WritableEvent() = default;
-
-EventPair WritableEvent::CreateEventPair(KernelCore& kernel, std::string name) {
-    std::shared_ptr<WritableEvent> writable_event(new WritableEvent(kernel));
-    std::shared_ptr<ReadableEvent> readable_event(new ReadableEvent(kernel));
-
-    writable_event->name = name + ":Writable";
-    writable_event->readable = readable_event;
-    readable_event->name = name + ":Readable";
-
-    return {std::move(readable_event), std::move(writable_event)};
-}
-
-std::shared_ptr<ReadableEvent> WritableEvent::GetReadableEvent() const {
-    return readable;
-}
-
-void WritableEvent::Signal() {
-    readable->Signal();
-}
-
-void WritableEvent::Clear() {
-    readable->Clear();
-}
-
-} // namespace Kernel

src/core/hle/kernel/writable_event.h

@@ -1,60 +0,0 @@
-// Copyright 2014 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-#include <memory>
-
-#include "core/hle/kernel/object.h"
-
-namespace Kernel {
-
-class KernelCore;
-class ReadableEvent;
-class WritableEvent;
-
-struct EventPair {
-    std::shared_ptr<ReadableEvent> readable;
-    std::shared_ptr<WritableEvent> writable;
-};
-
-class WritableEvent final : public Object {
-public:
-    ~WritableEvent() override;
-
-    /**
-     * Creates an event
-     * @param kernel The kernel instance to create this event under.
-     * @param name Optional name of event
-     */
-    static EventPair CreateEventPair(KernelCore& kernel, std::string name = "Unknown");
-
-    std::string GetTypeName() const override {
-        return "WritableEvent";
-    }
-    std::string GetName() const override {
-        return name;
-    }
-
-    static constexpr HandleType HANDLE_TYPE = HandleType::WritableEvent;
-    HandleType GetHandleType() const override {
-        return HANDLE_TYPE;
-    }
-
-    std::shared_ptr<ReadableEvent> GetReadableEvent() const;
-
-    void Signal();
-    void Clear();
-
-    void Finalize() override {}
-
-private:
-    explicit WritableEvent(KernelCore& kernel);
-
-    std::shared_ptr<ReadableEvent> readable;
-
-    std::string name; ///< Name of event (optional)
-};
-
-} // namespace Kernel

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

@@ -13,11 +13,12 @@
 #include "core/file_sys/registered_cache.h"
 #include "core/file_sys/savedata_factory.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/readable_event.h"
 #include "core/hle/kernel/transfer_memory.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/acc/profile_manager.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applet_ae.h"
@@ -303,17 +304,18 @@ ISelfController::ISelfController(Core::System& system_, NVFlinger::NVFlinger& nv
     RegisterHandlers(functions);
 
     auto& kernel = system.Kernel();
-    launchable_event =
-        Kernel::WritableEvent::CreateEventPair(kernel, "ISelfController:LaunchableEvent");
+    launchable_event = Kernel::KEvent::Create(kernel, "ISelfController:LaunchableEvent");
+    launchable_event->Initialize();
 
     // This event is created by AM on the first time GetAccumulatedSuspendedTickChangedEvent() is
     // called. Yuzu can just create it unconditionally, since it doesn't need to support multiple
     // ISelfControllers. The event is signaled on creation, and on transition from suspended -> not
     // suspended if the event has previously been created by a call to
     // GetAccumulatedSuspendedTickChangedEvent.
-    accumulated_suspended_tick_changed_event = Kernel::WritableEvent::CreateEventPair(
-        kernel, "ISelfController:AccumulatedSuspendedTickChangedEvent");
-    accumulated_suspended_tick_changed_event.writable->Signal();
+    accumulated_suspended_tick_changed_event =
+        Kernel::KEvent::Create(kernel, "ISelfController:AccumulatedSuspendedTickChangedEvent");
+    accumulated_suspended_tick_changed_event->Initialize();
+    accumulated_suspended_tick_changed_event->GetWritableEvent()->Signal();
 }
 
 ISelfController::~ISelfController() = default;
@@ -372,11 +374,11 @@ void ISelfController::LeaveFatalSection(Kernel::HLERequestContext& ctx) {
 void ISelfController::GetLibraryAppletLaunchableEvent(Kernel::HLERequestContext& ctx) {
     LOG_WARNING(Service_AM, "(STUBBED) called");
 
-    launchable_event.writable->Signal();
+    launchable_event->GetWritableEvent()->Signal();
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(launchable_event.readable);
+    rb.PushCopyObjects(launchable_event->GetReadableEvent());
 }
 
 void ISelfController::SetScreenShotPermission(Kernel::HLERequestContext& ctx) {
@@ -555,41 +557,42 @@ void ISelfController::GetAccumulatedSuspendedTickChangedEvent(Kernel::HLERequest
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(accumulated_suspended_tick_changed_event.readable);
+    rb.PushCopyObjects(accumulated_suspended_tick_changed_event->GetReadableEvent());
 }
 
 AppletMessageQueue::AppletMessageQueue(Kernel::KernelCore& kernel) {
-    on_new_message =
-        Kernel::WritableEvent::CreateEventPair(kernel, "AMMessageQueue:OnMessageReceived");
+    on_new_message = Kernel::KEvent::Create(kernel, "AMMessageQueue:OnMessageReceived");
+    on_new_message->Initialize();
     on_operation_mode_changed =
-        Kernel::WritableEvent::CreateEventPair(kernel, "AMMessageQueue:OperationModeChanged");
+        Kernel::KEvent::Create(kernel, "AMMessageQueue:OperationModeChanged");
+    on_operation_mode_changed->Initialize();
 }
 
 AppletMessageQueue::~AppletMessageQueue() = default;
 
-const std::shared_ptr<Kernel::ReadableEvent>& AppletMessageQueue::GetMessageReceiveEvent() const {
-    return on_new_message.readable;
+const std::shared_ptr<Kernel::KReadableEvent>& AppletMessageQueue::GetMessageReceiveEvent() const {
+    return on_new_message->GetReadableEvent();
 }
 
-const std::shared_ptr<Kernel::ReadableEvent>& AppletMessageQueue::GetOperationModeChangedEvent()
+const std::shared_ptr<Kernel::KReadableEvent>& AppletMessageQueue::GetOperationModeChangedEvent()
     const {
-    return on_operation_mode_changed.readable;
+    return on_operation_mode_changed->GetReadableEvent();
 }
 
 void AppletMessageQueue::PushMessage(AppletMessage msg) {
     messages.push(msg);
-    on_new_message.writable->Signal();
+    on_new_message->GetWritableEvent()->Signal();
 }
 
 AppletMessageQueue::AppletMessage AppletMessageQueue::PopMessage() {
     if (messages.empty()) {
-        on_new_message.writable->Clear();
+        on_new_message->GetWritableEvent()->Clear();
         return AppletMessage::NoMessage;
     }
     auto msg = messages.front();
     messages.pop();
     if (messages.empty()) {
-        on_new_message.writable->Clear();
+        on_new_message->GetWritableEvent()->Clear();
     }
     return msg;
 }
@@ -601,7 +604,7 @@ std::size_t AppletMessageQueue::GetMessageCount() const {
 void AppletMessageQueue::OperationModeChanged() {
     PushMessage(AppletMessage::OperationModeChanged);
     PushMessage(AppletMessage::PerformanceModeChanged);
-    on_operation_mode_changed.writable->Signal();
+    on_operation_mode_changed->GetWritableEvent()->Signal();
 }
 
 void AppletMessageQueue::RequestExit() {
@@ -1216,7 +1219,7 @@ IApplicationFunctions::IApplicationFunctions(Core::System& system_)
         {141, &IApplicationFunctions::TryPopFromFriendInvitationStorageChannel, "TryPopFromFriendInvitationStorageChannel"},
         {150, nullptr, "GetNotificationStorageChannelEvent"},
         {151, nullptr, "TryPopFromNotificationStorageChannel"},
-        {160, nullptr, "GetHealthWarningDisappearedSystemEvent"},
+        {160, &IApplicationFunctions::GetHealthWarningDisappearedSystemEvent, "GetHealthWarningDisappearedSystemEvent"},
         {170, nullptr, "SetHdcpAuthenticationActivated"},
         {180, nullptr, "GetLaunchRequiredVersion"},
         {181, nullptr, "UpgradeLaunchRequiredVersion"},
@@ -1229,11 +1232,15 @@ IApplicationFunctions::IApplicationFunctions(Core::System& system_)
     RegisterHandlers(functions);
 
     auto& kernel = system.Kernel();
-    gpu_error_detected_event = Kernel::WritableEvent::CreateEventPair(
-        kernel, "IApplicationFunctions:GpuErrorDetectedSystemEvent");
-
-    friend_invitation_storage_channel_event = Kernel::WritableEvent::CreateEventPair(
-        kernel, "IApplicationFunctions:FriendInvitationStorageChannelEvent");
+    gpu_error_detected_event =
+        Kernel::KEvent::Create(kernel, "IApplicationFunctions:GpuErrorDetectedSystemEvent");
+    gpu_error_detected_event->Initialize();
+    friend_invitation_storage_channel_event =
+        Kernel::KEvent::Create(kernel, "IApplicationFunctions:FriendInvitationStorageChannelEvent");
+    friend_invitation_storage_channel_event->Initialize();
+    health_warning_disappeared_system_event =
+        Kernel::KEvent::Create(kernel, "IApplicationFunctions:HealthWarningDisappearedSystemEvent");
+    health_warning_disappeared_system_event->Initialize();
 }
 
 IApplicationFunctions::~IApplicationFunctions() = default;
@@ -1630,7 +1637,7 @@ void IApplicationFunctions::GetGpuErrorDetectedSystemEvent(Kernel::HLERequestCon
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(gpu_error_detected_event.readable);
+    rb.PushCopyObjects(gpu_error_detected_event->GetReadableEvent());
 }
 
 void IApplicationFunctions::GetFriendInvitationStorageChannelEvent(Kernel::HLERequestContext& ctx) {
@@ -1638,7 +1645,7 @@ void IApplicationFunctions::GetFriendInvitationStorageChannelEvent(Kernel::HLERe
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(friend_invitation_storage_channel_event.readable);
+    rb.PushCopyObjects(friend_invitation_storage_channel_event->GetReadableEvent());
 }
 
 void IApplicationFunctions::TryPopFromFriendInvitationStorageChannel(
@@ -1649,6 +1656,14 @@ void IApplicationFunctions::TryPopFromFriendInvitationStorageChannel(
     rb.Push(ERR_NO_DATA_IN_CHANNEL);
 }
 
+void IApplicationFunctions::GetHealthWarningDisappearedSystemEvent(Kernel::HLERequestContext& ctx) {
+    LOG_DEBUG(Service_AM, "called");
+
+    IPC::ResponseBuilder rb{ctx, 2, 1};
+    rb.Push(RESULT_SUCCESS);
+    rb.PushCopyObjects(health_warning_disappeared_system_event->GetReadableEvent());
+}
+
 void InstallInterfaces(SM::ServiceManager& service_manager, NVFlinger::NVFlinger& nvflinger,
                        Core::System& system) {
     auto message_queue = std::make_shared<AppletMessageQueue>(system.Kernel());
@@ -1682,8 +1697,9 @@ IHomeMenuFunctions::IHomeMenuFunctions(Core::System& system_)
 
     RegisterHandlers(functions);
 
-    pop_from_general_channel_event = Kernel::WritableEvent::CreateEventPair(
-        system.Kernel(), "IHomeMenuFunctions:PopFromGeneralChannelEvent");
+    pop_from_general_channel_event =
+        Kernel::KEvent::Create(system.Kernel(), "IHomeMenuFunctions:PopFromGeneralChannelEvent");
+    pop_from_general_channel_event->Initialize();
 }
 
 IHomeMenuFunctions::~IHomeMenuFunctions() = default;
@@ -1700,7 +1716,7 @@ void IHomeMenuFunctions::GetPopFromGeneralChannelEvent(Kernel::HLERequestContext
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(pop_from_general_channel_event.readable);
+    rb.PushCopyObjects(pop_from_general_channel_event->GetReadableEvent());
 }
 
 IGlobalStateController::IGlobalStateController(Core::System& system_)

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

@@ -7,11 +7,12 @@
 #include <chrono>
 #include <memory>
 #include <queue>
-#include "core/hle/kernel/writable_event.h"
+
 #include "core/hle/service/service.h"
 
 namespace Kernel {
 class KernelCore;
+class KEvent;
 class TransferMemory;
 } // namespace Kernel
 
@@ -55,8 +56,8 @@ public:
     explicit AppletMessageQueue(Kernel::KernelCore& kernel);
     ~AppletMessageQueue();
 
-    const std::shared_ptr<Kernel::ReadableEvent>& GetMessageReceiveEvent() const;
-    const std::shared_ptr<Kernel::ReadableEvent>& GetOperationModeChangedEvent() const;
+    const std::shared_ptr<Kernel::KReadableEvent>& GetMessageReceiveEvent() const;
+    const std::shared_ptr<Kernel::KReadableEvent>& GetOperationModeChangedEvent() const;
     void PushMessage(AppletMessage msg);
     AppletMessage PopMessage();
     std::size_t GetMessageCount() const;
@@ -65,8 +66,8 @@ public:
 
 private:
     std::queue<AppletMessage> messages;
-    Kernel::EventPair on_new_message;
-    Kernel::EventPair on_operation_mode_changed;
+    std::shared_ptr<Kernel::KEvent> on_new_message;
+    std::shared_ptr<Kernel::KEvent> on_operation_mode_changed;
 };
 
 class IWindowController final : public ServiceFramework<IWindowController> {
@@ -153,8 +154,8 @@ private:
     };
 
     NVFlinger::NVFlinger& nvflinger;
-    Kernel::EventPair launchable_event;
-    Kernel::EventPair accumulated_suspended_tick_changed_event;
+    std::shared_ptr<Kernel::KEvent> launchable_event;
+    std::shared_ptr<Kernel::KEvent> accumulated_suspended_tick_changed_event;
 
     u32 idle_time_detection_extension = 0;
     u64 num_fatal_sections_entered = 0;
@@ -290,12 +291,14 @@ private:
     void GetGpuErrorDetectedSystemEvent(Kernel::HLERequestContext& ctx);
     void GetFriendInvitationStorageChannelEvent(Kernel::HLERequestContext& ctx);
     void TryPopFromFriendInvitationStorageChannel(Kernel::HLERequestContext& ctx);
+    void GetHealthWarningDisappearedSystemEvent(Kernel::HLERequestContext& ctx);
 
     bool launch_popped_application_specific = false;
     bool launch_popped_account_preselect = false;
     s32 previous_program_index{-1};
-    Kernel::EventPair gpu_error_detected_event;
-    Kernel::EventPair friend_invitation_storage_channel_event;
+    std::shared_ptr<Kernel::KEvent> gpu_error_detected_event;
+    std::shared_ptr<Kernel::KEvent> friend_invitation_storage_channel_event;
+    std::shared_ptr<Kernel::KEvent> health_warning_disappeared_system_event;
 };
 
 class IHomeMenuFunctions final : public ServiceFramework<IHomeMenuFunctions> {
@@ -307,7 +310,7 @@ private:
     void RequestToGetForeground(Kernel::HLERequestContext& ctx);
     void GetPopFromGeneralChannelEvent(Kernel::HLERequestContext& ctx);
 
-    Kernel::EventPair pop_from_general_channel_event;
+    std::shared_ptr<Kernel::KEvent> pop_from_general_channel_event;
 };
 
 class IGlobalStateController final : public ServiceFramework<IGlobalStateController> {

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

@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include <cstring>
+
 #include "common/assert.h"
 #include "core/core.h"
 #include "core/frontend/applets/controller.h"
@@ -11,9 +12,10 @@
 #include "core/frontend/applets/profile_select.h"
 #include "core/frontend/applets/software_keyboard.h"
 #include "core/frontend/applets/web_browser.h"
-#include "core/hle/kernel/readable_event.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/am/applets/applets.h"
 #include "core/hle/service/am/applets/controller.h"
@@ -27,11 +29,13 @@ namespace Service::AM::Applets {
 
 AppletDataBroker::AppletDataBroker(Kernel::KernelCore& kernel) {
     state_changed_event =
-        Kernel::WritableEvent::CreateEventPair(kernel, "ILibraryAppletAccessor:StateChangedEvent");
-    pop_out_data_event =
-        Kernel::WritableEvent::CreateEventPair(kernel, "ILibraryAppletAccessor:PopDataOutEvent");
-    pop_interactive_out_data_event = Kernel::WritableEvent::CreateEventPair(
-        kernel, "ILibraryAppletAccessor:PopInteractiveDataOutEvent");
+        Kernel::KEvent::Create(kernel, "ILibraryAppletAccessor:StateChangedEvent");
+    state_changed_event->Initialize();
+    pop_out_data_event = Kernel::KEvent::Create(kernel, "ILibraryAppletAccessor:PopDataOutEvent");
+    pop_out_data_event->Initialize();
+    pop_interactive_out_data_event =
+        Kernel::KEvent::Create(kernel, "ILibraryAppletAccessor:PopInteractiveDataOutEvent");
+    pop_interactive_out_data_event->Initialize();
 }
 
 AppletDataBroker::~AppletDataBroker() = default;
@@ -58,7 +62,7 @@ std::shared_ptr<IStorage> AppletDataBroker::PopNormalDataToGame() {
 
     auto out = std::move(out_channel.front());
     out_channel.pop_front();
-    pop_out_data_event.writable->Clear();
+    pop_out_data_event->GetWritableEvent()->Clear();
     return out;
 }
 
@@ -77,7 +81,7 @@ std::shared_ptr<IStorage> AppletDataBroker::PopInteractiveDataToGame() {
 
     auto out = std::move(out_interactive_channel.front());
     out_interactive_channel.pop_front();
-    pop_interactive_out_data_event.writable->Clear();
+    pop_interactive_out_data_event->GetWritableEvent()->Clear();
     return out;
 }
 
@@ -96,7 +100,7 @@ void AppletDataBroker::PushNormalDataFromGame(std::shared_ptr<IStorage>&& storag
 
 void AppletDataBroker::PushNormalDataFromApplet(std::shared_ptr<IStorage>&& storage) {
     out_channel.emplace_back(std::move(storage));
-    pop_out_data_event.writable->Signal();
+    pop_out_data_event->GetWritableEvent()->Signal();
 }
 
 void AppletDataBroker::PushInteractiveDataFromGame(std::shared_ptr<IStorage>&& storage) {
@@ -105,23 +109,23 @@ void AppletDataBroker::PushInteractiveDataFromGame(std::shared_ptr<IStorage>&& s
 
 void AppletDataBroker::PushInteractiveDataFromApplet(std::shared_ptr<IStorage>&& storage) {
     out_interactive_channel.emplace_back(std::move(storage));
-    pop_interactive_out_data_event.writable->Signal();
+    pop_interactive_out_data_event->GetWritableEvent()->Signal();
 }
 
 void AppletDataBroker::SignalStateChanged() const {
-    state_changed_event.writable->Signal();
+    state_changed_event->GetWritableEvent()->Signal();
 }
 
-std::shared_ptr<Kernel::ReadableEvent> AppletDataBroker::GetNormalDataEvent() const {
-    return pop_out_data_event.readable;
+std::shared_ptr<Kernel::KReadableEvent> AppletDataBroker::GetNormalDataEvent() const {
+    return pop_out_data_event->GetReadableEvent();
 }
 
-std::shared_ptr<Kernel::ReadableEvent> AppletDataBroker::GetInteractiveDataEvent() const {
-    return pop_interactive_out_data_event.readable;
+std::shared_ptr<Kernel::KReadableEvent> AppletDataBroker::GetInteractiveDataEvent() const {
+    return pop_interactive_out_data_event->GetReadableEvent();
 }
 
-std::shared_ptr<Kernel::ReadableEvent> AppletDataBroker::GetStateChangedEvent() const {
-    return state_changed_event.readable;
+std::shared_ptr<Kernel::KReadableEvent> AppletDataBroker::GetStateChangedEvent() const {
+    return state_changed_event->GetReadableEvent();
 }
 
 Applet::Applet(Kernel::KernelCore& kernel_) : broker{kernel_} {}

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

@@ -6,9 +6,9 @@
 
 #include <memory>
 #include <queue>
+
 #include "common/swap.h"
 #include "core/hle/kernel/object.h"
-#include "core/hle/kernel/writable_event.h"
 
 union ResultCode;
 
@@ -29,7 +29,9 @@ class WebBrowserApplet;
 
 namespace Kernel {
 class KernelCore;
-}
+class KEvent;
+class KReadableEvent;
+} // namespace Kernel
 
 namespace Service::AM {
 
@@ -87,9 +89,9 @@ public:
 
     void SignalStateChanged() const;
 
-    std::shared_ptr<Kernel::ReadableEvent> GetNormalDataEvent() const;
-    std::shared_ptr<Kernel::ReadableEvent> GetInteractiveDataEvent() const;
-    std::shared_ptr<Kernel::ReadableEvent> GetStateChangedEvent() const;
+    std::shared_ptr<Kernel::KReadableEvent> GetNormalDataEvent() const;
+    std::shared_ptr<Kernel::KReadableEvent> GetInteractiveDataEvent() const;
+    std::shared_ptr<Kernel::KReadableEvent> GetStateChangedEvent() const;
 
 private:
     // Queues are named from applet's perspective
@@ -106,13 +108,13 @@ private:
     // PopInteractiveDataToGame and PushInteractiveDataFromApplet
     std::deque<std::shared_ptr<IStorage>> out_interactive_channel;
 
-    Kernel::EventPair state_changed_event;
+    std::shared_ptr<Kernel::KEvent> state_changed_event;
 
     // Signaled on PushNormalDataFromApplet
-    Kernel::EventPair pop_out_data_event;
+    std::shared_ptr<Kernel::KEvent> pop_out_data_event;
 
     // Signaled on PushInteractiveDataFromApplet
-    Kernel::EventPair pop_interactive_out_data_event;
+    std::shared_ptr<Kernel::KEvent> pop_interactive_out_data_event;
 };
 
 class Applet {

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

@@ -37,7 +37,7 @@ static Core::Frontend::ControllerParameters ConvertToFrontendParameters(
         .border_colors = std::move(identification_colors),
         .enable_explain_text = enable_text,
         .explain_text = std::move(text),
-        .allow_pro_controller = npad_style_set.pro_controller == 1,
+        .allow_pro_controller = npad_style_set.fullkey == 1,
         .allow_handheld = npad_style_set.handheld == 1,
         .allow_dual_joycons = npad_style_set.joycon_dual == 1,
         .allow_left_joycon = npad_style_set.joycon_left == 1,
@@ -211,7 +211,8 @@ void Controller::Execute() {
     case ControllerSupportMode::ShowControllerFirmwareUpdate:
         UNIMPLEMENTED_MSG("ControllerSupportMode={} is not implemented",
                           controller_private_arg.mode);
-        [[fallthrough]];
+        ConfigurationComplete();
+        break;
     default: {
         ConfigurationComplete();
         break;

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

@@ -121,6 +121,10 @@ void SoftwareKeyboard::ExecuteInteractive() {
         std::memcpy(&request, data.data(), sizeof(Request));
 
         switch (request) {
+        case Request::Finalize:
+            complete = true;
+            broker.SignalStateChanged();
+            break;
         case Request::Calc: {
             broker.PushNormalDataFromApplet(std::make_shared<IStorage>(system, std::vector<u8>{1}));
             broker.SignalStateChanged();

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

@@ -5,6 +5,7 @@
 #include <algorithm>
 #include <numeric>
 #include <vector>
+
 #include "common/logging/log.h"
 #include "core/core.h"
 #include "core/file_sys/common_funcs.h"
@@ -14,10 +15,10 @@
 #include "core/file_sys/patch_manager.h"
 #include "core/file_sys/registered_cache.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/aoc/aoc_u.h"
 #include "core/loader/loader.h"
 #include "core/settings.h"
@@ -62,8 +63,9 @@ public:
 
         RegisterHandlers(functions);
 
-        purchased_event = Kernel::WritableEvent::CreateEventPair(
-            system.Kernel(), "IPurchaseEventManager:PurchasedEvent");
+        purchased_event =
+            Kernel::KEvent::Create(system.Kernel(), "IPurchaseEventManager:PurchasedEvent");
+        purchased_event->Initialize();
     }
 
 private:
@@ -96,10 +98,10 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(purchased_event.readable);
+        rb.PushCopyObjects(purchased_event->GetReadableEvent());
     }
 
-    Kernel::EventPair purchased_event;
+    std::shared_ptr<Kernel::KEvent> purchased_event;
 };
 
 AOC_U::AOC_U(Core::System& system_)
@@ -124,8 +126,8 @@ AOC_U::AOC_U(Core::System& system_)
     RegisterHandlers(functions);
 
     auto& kernel = system.Kernel();
-    aoc_change_event =
-        Kernel::WritableEvent::CreateEventPair(kernel, "GetAddOnContentListChanged:Event");
+    aoc_change_event = Kernel::KEvent::Create(kernel, "GetAddOnContentListChanged:Event");
+    aoc_change_event->Initialize();
 }
 
 AOC_U::~AOC_U() = default;
@@ -252,7 +254,7 @@ void AOC_U::GetAddOnContentListChangedEvent(Kernel::HLERequestContext& ctx) {
 
     IPC::ResponseBuilder rb{ctx, 2, 1};
     rb.Push(RESULT_SUCCESS);
-    rb.PushCopyObjects(aoc_change_event.readable);
+    rb.PushCopyObjects(aoc_change_event->GetReadableEvent());
 }
 
 void AOC_U::CreateEcPurchasedEventManager(Kernel::HLERequestContext& ctx) {

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

@@ -11,7 +11,7 @@ class System;
 }
 
 namespace Kernel {
-class WritableEvent;
+class KEvent;
 }
 
 namespace Service::AOC {
@@ -31,7 +31,7 @@ private:
     void CreatePermanentEcPurchasedEventManager(Kernel::HLERequestContext& ctx);
 
     std::vector<u64> add_on_content;
-    Kernel::EventPair aoc_change_event;
+    std::shared_ptr<Kernel::KEvent> aoc_change_event;
 };
 
 /// Registers all AOC services with the specified service manager.

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

@@ -14,9 +14,10 @@
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/audio/audout_u.h"
 #include "core/hle/service/audio/errors.h"
 #include "core/memory.h"
@@ -66,13 +67,13 @@ public:
         RegisterHandlers(functions);
 
         // This is the event handle used to check if the audio buffer was released
-        buffer_event =
-            Kernel::WritableEvent::CreateEventPair(system.Kernel(), "IAudioOutBufferReleased");
+        buffer_event = Kernel::KEvent::Create(system.Kernel(), "IAudioOutBufferReleased");
+        buffer_event->Initialize();
 
         stream = audio_core.OpenStream(system.CoreTiming(), audio_params.sample_rate,
                                        audio_params.channel_count, std::move(unique_name), [this] {
                                            const auto guard = LockService();
-                                           buffer_event.writable->Signal();
+                                           buffer_event->GetWritableEvent()->Signal();
                                        });
     }
 
@@ -125,7 +126,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(buffer_event.readable);
+        rb.PushCopyObjects(buffer_event->GetReadableEvent());
     }
 
     void AppendAudioOutBufferImpl(Kernel::HLERequestContext& ctx) {
@@ -219,7 +220,7 @@ private:
     [[maybe_unused]] AudoutParams audio_params{};
 
     /// This is the event handle used to check if the audio buffer was released
-    Kernel::EventPair buffer_event;
+    std::shared_ptr<Kernel::KEvent> buffer_event;
     Core::Memory::Memory& main_memory;
 };
 

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

@@ -16,9 +16,10 @@
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/audio/audren_u.h"
 #include "core/hle/service/audio/errors.h"
 
@@ -47,13 +48,13 @@ public:
         // clang-format on
         RegisterHandlers(functions);
 
-        system_event =
-            Kernel::WritableEvent::CreateEventPair(system.Kernel(), "IAudioRenderer:SystemEvent");
+        system_event = Kernel::KEvent::Create(system.Kernel(), "IAudioRenderer:SystemEvent");
+        system_event->Initialize();
         renderer = std::make_unique<AudioCore::AudioRenderer>(
             system.CoreTiming(), system.Memory(), audren_params,
             [this]() {
                 const auto guard = LockService();
-                system_event.writable->Signal();
+                system_event->GetWritableEvent()->Signal();
             },
             instance_number);
     }
@@ -126,7 +127,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(system_event.readable);
+        rb.PushCopyObjects(system_event->GetReadableEvent());
     }
 
     void SetRenderingTimeLimit(Kernel::HLERequestContext& ctx) {
@@ -160,7 +161,7 @@ private:
         rb.Push(ERR_NOT_SUPPORTED);
     }
 
-    Kernel::EventPair system_event;
+    std::shared_ptr<Kernel::KEvent> system_event;
     std::unique_ptr<AudioCore::AudioRenderer> renderer;
     u32 rendering_time_limit_percent = 100;
 };
@@ -187,17 +188,19 @@ public:
         RegisterHandlers(functions);
 
         auto& kernel = system.Kernel();
-        buffer_event =
-            Kernel::WritableEvent::CreateEventPair(kernel, "IAudioOutBufferReleasedEvent");
+        buffer_event = Kernel::KEvent::Create(kernel, "IAudioOutBufferReleasedEvent");
+        buffer_event->Initialize();
 
         // Should be similar to audio_output_device_switch_event
-        audio_input_device_switch_event = Kernel::WritableEvent::CreateEventPair(
-            kernel, "IAudioDevice:AudioInputDeviceSwitchedEvent");
+        audio_input_device_switch_event =
+            Kernel::KEvent::Create(kernel, "IAudioDevice:AudioInputDeviceSwitchedEvent");
+        audio_input_device_switch_event->Initialize();
 
         // Should only be signalled when an audio output device has been changed, example: speaker
         // to headset
-        audio_output_device_switch_event = Kernel::WritableEvent::CreateEventPair(
-            kernel, "IAudioDevice:AudioOutputDeviceSwitchedEvent");
+        audio_output_device_switch_event =
+            Kernel::KEvent::Create(kernel, "IAudioDevice:AudioOutputDeviceSwitchedEvent");
+        audio_output_device_switch_event->Initialize();
     }
 
 private:
@@ -286,11 +289,11 @@ private:
     void QueryAudioDeviceSystemEvent(Kernel::HLERequestContext& ctx) {
         LOG_WARNING(Service_Audio, "(STUBBED) called");
 
-        buffer_event.writable->Signal();
+        buffer_event->GetWritableEvent()->Signal();
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(buffer_event.readable);
+        rb.PushCopyObjects(buffer_event->GetReadableEvent());
     }
 
     void GetActiveChannelCount(Kernel::HLERequestContext& ctx) {
@@ -307,7 +310,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(audio_input_device_switch_event.readable);
+        rb.PushCopyObjects(audio_input_device_switch_event->GetReadableEvent());
     }
 
     void QueryAudioDeviceOutputEvent(Kernel::HLERequestContext& ctx) {
@@ -315,13 +318,13 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(audio_output_device_switch_event.readable);
+        rb.PushCopyObjects(audio_output_device_switch_event->GetReadableEvent());
     }
 
     u32_le revision = 0;
-    Kernel::EventPair buffer_event;
-    Kernel::EventPair audio_input_device_switch_event;
-    Kernel::EventPair audio_output_device_switch_event;
+    std::shared_ptr<Kernel::KEvent> buffer_event;
+    std::shared_ptr<Kernel::KEvent> audio_input_device_switch_event;
+    std::shared_ptr<Kernel::KEvent> audio_output_device_switch_event;
 
 }; // namespace Audio
 

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

@@ -5,6 +5,9 @@
 #include "common/hex_util.h"
 #include "common/logging/log.h"
 #include "core/core.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/lock.h"
 #include "core/hle/service/bcat/backend/backend.h"
 
@@ -12,12 +15,13 @@ namespace Service::BCAT {
 
 ProgressServiceBackend::ProgressServiceBackend(Kernel::KernelCore& kernel,
                                                std::string_view event_name) {
-    event = Kernel::WritableEvent::CreateEventPair(
-        kernel, std::string("ProgressServiceBackend:UpdateEvent:").append(event_name));
+    event = Kernel::KEvent::Create(kernel,
+                                   "ProgressServiceBackend:UpdateEvent:" + std::string(event_name));
+    event->Initialize();
 }
 
-std::shared_ptr<Kernel::ReadableEvent> ProgressServiceBackend::GetEvent() const {
-    return event.readable;
+std::shared_ptr<Kernel::KReadableEvent> ProgressServiceBackend::GetEvent() const {
+    return event->GetReadableEvent();
 }
 
 DeliveryCacheProgressImpl& ProgressServiceBackend::GetImpl() {
@@ -85,9 +89,9 @@ void ProgressServiceBackend::FinishDownload(ResultCode result) {
 void ProgressServiceBackend::SignalUpdate() const {
     if (need_hle_lock) {
         std::lock_guard lock(HLE::g_hle_lock);
-        event.writable->Signal();
+        event->GetWritableEvent()->Signal();
     } else {
-        event.writable->Signal();
+        event->GetWritableEvent()->Signal();
     }
 }
 

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

@@ -11,8 +11,6 @@
 
 #include "common/common_types.h"
 #include "core/file_sys/vfs_types.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/result.h"
 
 namespace Core {
@@ -21,7 +19,9 @@ class System;
 
 namespace Kernel {
 class KernelCore;
-}
+class KEvent;
+class KReadableEvent;
+} // namespace Kernel
 
 namespace Service::BCAT {
 
@@ -98,13 +98,13 @@ public:
 private:
     explicit ProgressServiceBackend(Kernel::KernelCore& kernel, std::string_view event_name);
 
-    std::shared_ptr<Kernel::ReadableEvent> GetEvent() const;
+    std::shared_ptr<Kernel::KReadableEvent> GetEvent() const;
     DeliveryCacheProgressImpl& GetImpl();
 
     void SignalUpdate() const;
 
     DeliveryCacheProgressImpl impl{};
-    Kernel::EventPair event;
+    std::shared_ptr<Kernel::KEvent> event;
     bool need_hle_lock = false;
 };
 

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

@@ -11,9 +11,9 @@
 #include "core/core.h"
 #include "core/file_sys/vfs.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/bcat/backend/backend.h"
 #include "core/hle/service/bcat/bcat.h"
 #include "core/hle/service/bcat/module.h"
@@ -89,7 +89,7 @@ struct DeliveryCacheDirectoryEntry {
 class IDeliveryCacheProgressService final : public ServiceFramework<IDeliveryCacheProgressService> {
 public:
     explicit IDeliveryCacheProgressService(Core::System& system_,
-                                           std::shared_ptr<Kernel::ReadableEvent> event_,
+                                           std::shared_ptr<Kernel::KReadableEvent> event_,
                                            const DeliveryCacheProgressImpl& impl_)
         : ServiceFramework{system_, "IDeliveryCacheProgressService"}, event{std::move(event_)},
           impl{impl_} {
@@ -121,7 +121,7 @@ private:
         rb.Push(RESULT_SUCCESS);
     }
 
-    std::shared_ptr<Kernel::ReadableEvent> event;
+    std::shared_ptr<Kernel::KReadableEvent> event;
     const DeliveryCacheProgressImpl& impl;
 };
 

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

@@ -6,9 +6,9 @@
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/btdrv/btdrv.h"
 #include "core/hle/service/service.h"
 #include "core/hle/service/sm/sm.h"
@@ -35,7 +35,8 @@ public:
         RegisterHandlers(functions);
 
         auto& kernel = system.Kernel();
-        register_event = Kernel::WritableEvent::CreateEventPair(kernel, "BT:RegisterEvent");
+        register_event = Kernel::KEvent::Create(kernel, "BT:RegisterEvent");
+        register_event->Initialize();
     }
 
 private:
@@ -44,10 +45,10 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(register_event.readable);
+        rb.PushCopyObjects(register_event->GetReadableEvent());
     }
 
-    Kernel::EventPair register_event;
+    std::shared_ptr<Kernel::KEvent> register_event;
 };
 
 class BtDrv final : public ServiceFramework<BtDrv> {

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

@@ -8,9 +8,9 @@
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/btm/btm.h"
 #include "core/hle/service/service.h"
 
@@ -58,12 +58,14 @@ public:
         RegisterHandlers(functions);
 
         auto& kernel = system.Kernel();
-        scan_event = Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:ScanEvent");
-        connection_event =
-            Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:ConnectionEvent");
-        service_discovery =
-            Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:Discovery");
-        config_event = Kernel::WritableEvent::CreateEventPair(kernel, "IBtmUserCore:ConfigEvent");
+        scan_event = Kernel::KEvent::Create(kernel, "IBtmUserCore:ScanEvent");
+        scan_event->Initialize();
+        connection_event = Kernel::KEvent::Create(kernel, "IBtmUserCore:ConnectionEvent");
+        connection_event->Initialize();
+        service_discovery = Kernel::KEvent::Create(kernel, "IBtmUserCore:Discovery");
+        service_discovery->Initialize();
+        config_event = Kernel::KEvent::Create(kernel, "IBtmUserCore:ConfigEvent");
+        config_event->Initialize();
     }
 
 private:
@@ -72,7 +74,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(scan_event.readable);
+        rb.PushCopyObjects(scan_event->GetReadableEvent());
     }
 
     void AcquireBleConnectionEvent(Kernel::HLERequestContext& ctx) {
@@ -80,7 +82,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(connection_event.readable);
+        rb.PushCopyObjects(connection_event->GetReadableEvent());
     }
 
     void AcquireBleServiceDiscoveryEvent(Kernel::HLERequestContext& ctx) {
@@ -88,7 +90,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(service_discovery.readable);
+        rb.PushCopyObjects(service_discovery->GetReadableEvent());
     }
 
     void AcquireBleMtuConfigEvent(Kernel::HLERequestContext& ctx) {
@@ -96,13 +98,13 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(config_event.readable);
+        rb.PushCopyObjects(config_event->GetReadableEvent());
     }
 
-    Kernel::EventPair scan_event;
-    Kernel::EventPair connection_event;
-    Kernel::EventPair service_discovery;
-    Kernel::EventPair config_event;
+    std::shared_ptr<Kernel::KEvent> scan_event;
+    std::shared_ptr<Kernel::KEvent> connection_event;
+    std::shared_ptr<Kernel::KEvent> service_discovery;
+    std::shared_ptr<Kernel::KEvent> config_event;
 };
 
 class BTM_USR final : public ServiceFramework<BTM_USR> {

src/core/hle/service/friend/friend.cpp

@@ -7,8 +7,9 @@
 #include "common/uuid.h"
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/service/friend/errors.h"
 #include "core/hle/service/friend/friend.h"
 #include "core/hle/service/friend/interface.h"
@@ -183,8 +184,9 @@ public:
 
         RegisterHandlers(functions);
 
-        notification_event = Kernel::WritableEvent::CreateEventPair(
-            system.Kernel(), "INotificationService:NotifyEvent");
+        notification_event =
+            Kernel::KEvent::Create(system.Kernel(), "INotificationService:NotifyEvent");
+        notification_event->Initialize();
     }
 
 private:
@@ -193,7 +195,7 @@ private:
 
         IPC::ResponseBuilder rb{ctx, 2, 1};
         rb.Push(RESULT_SUCCESS);
-        rb.PushCopyObjects(notification_event.readable);
+        rb.PushCopyObjects(notification_event->GetReadableEvent());
     }
 
     void Clear(Kernel::HLERequestContext& ctx) {
@@ -258,7 +260,7 @@ private:
     };
 
     Common::UUID uuid{Common::INVALID_UUID};
-    Kernel::EventPair notification_event;
+    std::shared_ptr<Kernel::KEvent> notification_event;
     std::queue<SizedNotificationInfo> notifications;
     States states{};
 };

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

@@ -39,16 +39,25 @@ void Controller_Keyboard::OnUpdate(const Core::Timing::CoreTiming& core_timing,
     cur_entry.sampling_number2 = cur_entry.sampling_number;
 
     cur_entry.key.fill(0);
-    cur_entry.modifier = 0;
     if (Settings::values.keyboard_enabled) {
         for (std::size_t i = 0; i < keyboard_keys.size(); ++i) {
             auto& entry = cur_entry.key[i / KEYS_PER_BYTE];
             entry = static_cast<u8>(entry | (keyboard_keys[i]->GetStatus() << (i % KEYS_PER_BYTE)));
         }
 
-        for (std::size_t i = 0; i < keyboard_mods.size(); ++i) {
-            cur_entry.modifier |= (keyboard_mods[i]->GetStatus() << i);
-        }
+        using namespace Settings::NativeKeyboard;
+
+        // TODO: Assign the correct key to all modifiers
+        cur_entry.modifier.control.Assign(keyboard_mods[LeftControl]->GetStatus());
+        cur_entry.modifier.shift.Assign(keyboard_mods[LeftShift]->GetStatus());
+        cur_entry.modifier.left_alt.Assign(keyboard_mods[LeftAlt]->GetStatus());
+        cur_entry.modifier.right_alt.Assign(keyboard_mods[RightAlt]->GetStatus());
+        cur_entry.modifier.gui.Assign(0);
+        cur_entry.modifier.caps_lock.Assign(keyboard_mods[CapsLock]->GetStatus());
+        cur_entry.modifier.scroll_lock.Assign(keyboard_mods[ScrollLock]->GetStatus());
+        cur_entry.modifier.num_lock.Assign(keyboard_mods[NumLock]->GetStatus());
+        cur_entry.modifier.katakana.Assign(0);
+        cur_entry.modifier.hiragana.Assign(0);
     }
     std::memcpy(data + SHARED_MEMORY_OFFSET, &shared_memory, sizeof(SharedMemory));
 }

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

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <array>
+#include "common/bit_field.h"
 #include "common/common_funcs.h"
 #include "common/common_types.h"
 #include "common/swap.h"
@@ -31,12 +32,28 @@ public:
     void OnLoadInputDevices() override;
 
 private:
+    struct Modifiers {
+        union {
+            u32_le raw{};
+            BitField<0, 1, u32> control;
+            BitField<1, 1, u32> shift;
+            BitField<2, 1, u32> left_alt;
+            BitField<3, 1, u32> right_alt;
+            BitField<4, 1, u32> gui;
+            BitField<8, 1, u32> caps_lock;
+            BitField<9, 1, u32> scroll_lock;
+            BitField<10, 1, u32> num_lock;
+            BitField<11, 1, u32> katakana;
+            BitField<12, 1, u32> hiragana;
+        };
+    };
+    static_assert(sizeof(Modifiers) == 0x4, "Modifiers is an invalid size");
+
     struct KeyboardState {
         s64_le sampling_number;
         s64_le sampling_number2;
 
-        s32_le modifier;
-        s32_le attribute;
+        Modifiers modifier;
         std::array<u8, 32> key;
     };
     static_assert(sizeof(KeyboardState) == 0x38, "KeyboardState is an invalid size");

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

@@ -36,6 +36,7 @@ void Controller_Mouse::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
     cur_entry.sampling_number = last_entry.sampling_number + 1;
     cur_entry.sampling_number2 = cur_entry.sampling_number;
 
+    cur_entry.attribute.raw = 0;
     if (Settings::values.mouse_enabled) {
         const auto [px, py, sx, sy] = mouse_device->GetStatus();
         const auto x = static_cast<s32>(px * Layout::ScreenUndocked::Width);
@@ -46,10 +47,14 @@ void Controller_Mouse::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
         cur_entry.delta_y = y - last_entry.y;
         cur_entry.mouse_wheel_x = sx;
         cur_entry.mouse_wheel_y = sy;
+        cur_entry.attribute.is_connected.Assign(1);
 
-        for (std::size_t i = 0; i < mouse_button_devices.size(); ++i) {
-            cur_entry.button |= (mouse_button_devices[i]->GetStatus() << i);
-        }
+        using namespace Settings::NativeMouseButton;
+        cur_entry.button.left.Assign(mouse_button_devices[Left]->GetStatus());
+        cur_entry.button.right.Assign(mouse_button_devices[Right]->GetStatus());
+        cur_entry.button.middle.Assign(mouse_button_devices[Middle]->GetStatus());
+        cur_entry.button.forward.Assign(mouse_button_devices[Forward]->GetStatus());
+        cur_entry.button.back.Assign(mouse_button_devices[Back]->GetStatus());
     }
 
     std::memcpy(data + SHARED_MEMORY_OFFSET, &shared_memory, sizeof(SharedMemory));

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

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <array>
+#include "common/bit_field.h"
 #include "common/common_types.h"
 #include "common/swap.h"
 #include "core/frontend/input.h"
@@ -30,6 +31,27 @@ public:
     void OnLoadInputDevices() override;
 
 private:
+    struct Buttons {
+        union {
+            u32_le raw{};
+            BitField<0, 1, u32> left;
+            BitField<1, 1, u32> right;
+            BitField<2, 1, u32> middle;
+            BitField<3, 1, u32> forward;
+            BitField<4, 1, u32> back;
+        };
+    };
+    static_assert(sizeof(Buttons) == 0x4, "Buttons is an invalid size");
+
+    struct Attributes {
+        union {
+            u32_le raw{};
+            BitField<0, 1, u32> transferable;
+            BitField<1, 1, u32> is_connected;
+        };
+    };
+    static_assert(sizeof(Attributes) == 0x4, "Attributes is an invalid size");
+
     struct MouseState {
         s64_le sampling_number;
         s64_le sampling_number2;
@@ -39,8 +61,8 @@ private:
         s32_le delta_y;
         s32_le mouse_wheel_x;
         s32_le mouse_wheel_y;
-        s32_le button;
-        s32_le attribute;
+        Buttons button;
+        Attributes attribute;
     };
     static_assert(sizeof(MouseState) == 0x30, "MouseState is an invalid size");
 

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

@@ -12,9 +12,10 @@
 #include "core/core.h"
 #include "core/core_timing.h"
 #include "core/frontend/input.h"
+#include "core/hle/kernel/k_event.h"
+#include "core/hle/kernel/k_readable_event.h"
+#include "core/hle/kernel/k_writable_event.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/hid/controllers/npad.h"
 #include "core/settings.h"
 
@@ -153,79 +154,86 @@ void Controller_NPad::InitNewlyAddedController(std::size_t controller_idx) {
     const auto controller_type = connected_controllers[controller_idx].type;
     auto& controller = shared_memory_entries[controller_idx];
     if (controller_type == NPadControllerType::None) {
-        styleset_changed_events[controller_idx].writable->Signal();
+        styleset_changed_events[controller_idx]->GetWritableEvent()->Signal();
         return;
     }
-    controller.joy_styles.raw = 0; // Zero out
+    controller.style_set.raw = 0; // Zero out
     controller.device_type.raw = 0;
-    controller.properties.raw = 0;
+    controller.system_properties.raw = 0;
     switch (controller_type) {
     case NPadControllerType::None:
         UNREACHABLE();
         break;
     case NPadControllerType::ProController:
-        controller.joy_styles.pro_controller.Assign(1);
-        controller.device_type.pro_controller.Assign(1);
-        controller.properties.is_vertical.Assign(1);
-        controller.properties.use_plus.Assign(1);
-        controller.properties.use_minus.Assign(1);
-        controller.pad_assignment = NpadAssignments::Single;
+        controller.style_set.fullkey.Assign(1);
+        controller.device_type.fullkey.Assign(1);
+        controller.system_properties.is_vertical.Assign(1);
+        controller.system_properties.use_plus.Assign(1);
+        controller.system_properties.use_minus.Assign(1);
+        controller.assignment_mode = NpadAssignments::Single;
+        controller.footer_type = AppletFooterUiType::SwitchProController;
         break;
     case NPadControllerType::Handheld:
-        controller.joy_styles.handheld.Assign(1);
-        controller.device_type.handheld.Assign(1);
-        controller.properties.is_vertical.Assign(1);
-        controller.properties.use_plus.Assign(1);
-        controller.properties.use_minus.Assign(1);
-        controller.pad_assignment = NpadAssignments::Dual;
+        controller.style_set.handheld.Assign(1);
+        controller.device_type.handheld_left.Assign(1);
+        controller.device_type.handheld_right.Assign(1);
+        controller.system_properties.is_vertical.Assign(1);
+        controller.system_properties.use_plus.Assign(1);
+        controller.system_properties.use_minus.Assign(1);
+        controller.assignment_mode = NpadAssignments::Dual;
+        controller.footer_type = AppletFooterUiType::HandheldJoyConLeftJoyConRight;
         break;
     case NPadControllerType::JoyDual:
-        controller.joy_styles.joycon_dual.Assign(1);
+        controller.style_set.joycon_dual.Assign(1);
         controller.device_type.joycon_left.Assign(1);
         controller.device_type.joycon_right.Assign(1);
-        controller.properties.is_vertical.Assign(1);
-        controller.properties.use_plus.Assign(1);
-        controller.properties.use_minus.Assign(1);
-        controller.pad_assignment = NpadAssignments::Dual;
+        controller.system_properties.is_vertical.Assign(1);
+        controller.system_properties.use_plus.Assign(1);
+        controller.system_properties.use_minus.Assign(1);
+        controller.assignment_mode = NpadAssignments::Dual;
+        controller.footer_type = AppletFooterUiType::JoyDual;
         break;
     case NPadControllerType::JoyLeft:
-        controller.joy_styles.joycon_left.Assign(1);
+        controller.style_set.joycon_left.Assign(1);
         controller.device_type.joycon_left.Assign(1);
-        controller.properties.is_horizontal.Assign(1);
-        controller.properties.use_minus.Assign(1);
-        controller.pad_assignment = NpadAssignments::Single;
+        controller.system_properties.is_horizontal.Assign(1);
+        controller.system_properties.use_minus.Assign(1);
+        controller.assignment_mode = NpadAssignments::Single;
+        controller.footer_type = AppletFooterUiType::JoyLeftHorizontal;
         break;
     case NPadControllerType::JoyRight:
-        controller.joy_styles.joycon_right.Assign(1);
+        controller.style_set.joycon_right.Assign(1);
         controller.device_type.joycon_right.Assign(1);
-        controller.properties.is_horizontal.Assign(1);
-        controller.properties.use_plus.Assign(1);
-        controller.pad_assignment = NpadAssignments::Single;
+        controller.system_properties.is_horizontal.Assign(1);
+        controller.system_properties.use_plus.Assign(1);
+        controller.assignment_mode = NpadAssignments::Single;
+        controller.footer_type = AppletFooterUiType::JoyRightHorizontal;
         break;
     case NPadControllerType::Pokeball:
-        controller.joy_styles.pokeball.Assign(1);
-        controller.device_type.pokeball.Assign(1);
-        controller.pad_assignment = NpadAssignments::Single;
+        controller.style_set.palma.Assign(1);
+        controller.device_type.palma.Assign(1);
+        controller.assignment_mode = NpadAssignments::Single;
         break;
     }
 
-    controller.single_color_error = ColorReadError::ReadOk;
-    controller.single_color.body_color = 0;
-    controller.single_color.button_color = 0;
+    controller.fullkey_color.attribute = ColorAttributes::Ok;
+    controller.fullkey_color.fullkey.body = 0;
+    controller.fullkey_color.fullkey.button = 0;
 
-    controller.dual_color_error = ColorReadError::ReadOk;
-    controller.left_color.body_color =
+    controller.joycon_color.attribute = ColorAttributes::Ok;
+    controller.joycon_color.left.body =
         Settings::values.players.GetValue()[controller_idx].body_color_left;
-    controller.left_color.button_color =
+    controller.joycon_color.left.button =
         Settings::values.players.GetValue()[controller_idx].button_color_left;
-    controller.right_color.body_color =
+    controller.joycon_color.right.body =
         Settings::values.players.GetValue()[controller_idx].body_color_right;
-    controller.right_color.button_color =
+    controller.joycon_color.right.button =
         Settings::values.players.GetValue()[controller_idx].button_color_right;
 
-    controller.battery_level[0] = BATTERY_FULL;
-    controller.battery_level[1] = BATTERY_FULL;
-    controller.battery_level[2] = BATTERY_FULL;
+    // TODO: Investigate when we should report all batery types
+    controller.battery_level_dual = BATTERY_FULL;
+    controller.battery_level_left = BATTERY_FULL;
+    controller.battery_level_right = BATTERY_FULL;
 
     SignalStyleSetChangedEvent(IndexToNPad(controller_idx));
 }
@@ -233,8 +241,9 @@ void Controller_NPad::InitNewlyAddedController(std::size_t controller_idx) {
 void Controller_NPad::OnInit() {
     auto& kernel = system.Kernel();
     for (std::size_t i = 0; i < styleset_changed_events.size(); ++i) {
-        styleset_changed_events[i] = Kernel::WritableEvent::CreateEventPair(
-            kernel, fmt::format("npad:NpadStyleSetChanged_{}", i));
+        styleset_changed_events[i] =
+            Kernel::KEvent::Create(kernel, fmt::format("npad:NpadStyleSetChanged_{}", i));
+        styleset_changed_events[i]->Initialize();
     }
 
     if (!IsControllerActivated()) {
@@ -249,8 +258,8 @@ void Controller_NPad::OnInit() {
         style.joycon_left.Assign(1);
         style.joycon_right.Assign(1);
         style.joycon_dual.Assign(1);
-        style.pro_controller.Assign(1);
-        style.pokeball.Assign(1);
+        style.fullkey.Assign(1);
+        style.palma.Assign(1);
     }
 
     std::transform(Settings::values.players.GetValue().begin(),
@@ -404,13 +413,10 @@ void Controller_NPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
     }
     for (std::size_t i = 0; i < shared_memory_entries.size(); ++i) {
         auto& npad = shared_memory_entries[i];
-        const std::array<NPadGeneric*, 7> controller_npads{&npad.main_controller_states,
-                                                           &npad.handheld_states,
-                                                           &npad.dual_states,
-                                                           &npad.left_joy_states,
-                                                           &npad.right_joy_states,
-                                                           &npad.pokeball_states,
-                                                           &npad.libnx};
+        const std::array<NPadGeneric*, 7> controller_npads{
+            &npad.fullkey_states,   &npad.handheld_states,  &npad.joy_dual_states,
+            &npad.joy_left_states,  &npad.joy_right_states, &npad.palma_states,
+            &npad.system_ext_states};
 
         for (auto* main_controller : controller_npads) {
             main_controller->common.entry_count = 16;
@@ -440,19 +446,19 @@ void Controller_NPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
         auto& pad_state = npad_pad_states[npad_index];
 
         auto& main_controller =
-            npad.main_controller_states.npad[npad.main_controller_states.common.last_entry_index];
+            npad.fullkey_states.npad[npad.fullkey_states.common.last_entry_index];
         auto& handheld_entry =
             npad.handheld_states.npad[npad.handheld_states.common.last_entry_index];
-        auto& dual_entry = npad.dual_states.npad[npad.dual_states.common.last_entry_index];
-        auto& left_entry = npad.left_joy_states.npad[npad.left_joy_states.common.last_entry_index];
+        auto& dual_entry = npad.joy_dual_states.npad[npad.joy_dual_states.common.last_entry_index];
+        auto& left_entry = npad.joy_left_states.npad[npad.joy_left_states.common.last_entry_index];
         auto& right_entry =
-            npad.right_joy_states.npad[npad.right_joy_states.common.last_entry_index];
-        auto& pokeball_entry =
-            npad.pokeball_states.npad[npad.pokeball_states.common.last_entry_index];
-        auto& libnx_entry = npad.libnx.npad[npad.libnx.common.last_entry_index];
+            npad.joy_right_states.npad[npad.joy_right_states.common.last_entry_index];
+        auto& pokeball_entry = npad.palma_states.npad[npad.palma_states.common.last_entry_index];
+        auto& libnx_entry =
+            npad.system_ext_states.npad[npad.system_ext_states.common.last_entry_index];
 
         libnx_entry.connection_status.raw = 0;
-        libnx_entry.connection_status.IsConnected.Assign(1);
+        libnx_entry.connection_status.is_connected.Assign(1);
 
         switch (controller_type) {
         case NPadControllerType::None:
@@ -460,67 +466,67 @@ void Controller_NPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
             break;
         case NPadControllerType::ProController:
             main_controller.connection_status.raw = 0;
-            main_controller.connection_status.IsConnected.Assign(1);
-            main_controller.connection_status.IsWired.Assign(1);
+            main_controller.connection_status.is_connected.Assign(1);
+            main_controller.connection_status.is_wired.Assign(1);
             main_controller.pad.pad_states.raw = pad_state.pad_states.raw;
             main_controller.pad.l_stick = pad_state.l_stick;
             main_controller.pad.r_stick = pad_state.r_stick;
 
-            libnx_entry.connection_status.IsWired.Assign(1);
+            libnx_entry.connection_status.is_wired.Assign(1);
             break;
         case NPadControllerType::Handheld:
             handheld_entry.connection_status.raw = 0;
-            handheld_entry.connection_status.IsConnected.Assign(1);
-            handheld_entry.connection_status.IsWired.Assign(1);
-            handheld_entry.connection_status.IsLeftJoyConnected.Assign(1);
-            handheld_entry.connection_status.IsRightJoyConnected.Assign(1);
-            handheld_entry.connection_status.IsLeftJoyWired.Assign(1);
-            handheld_entry.connection_status.IsRightJoyWired.Assign(1);
+            handheld_entry.connection_status.is_connected.Assign(1);
+            handheld_entry.connection_status.is_wired.Assign(1);
+            handheld_entry.connection_status.is_left_connected.Assign(1);
+            handheld_entry.connection_status.is_right_connected.Assign(1);
+            handheld_entry.connection_status.is_left_wired.Assign(1);
+            handheld_entry.connection_status.is_right_wired.Assign(1);
             handheld_entry.pad.pad_states.raw = pad_state.pad_states.raw;
             handheld_entry.pad.l_stick = pad_state.l_stick;
             handheld_entry.pad.r_stick = pad_state.r_stick;
 
-            libnx_entry.connection_status.IsWired.Assign(1);
-            libnx_entry.connection_status.IsLeftJoyConnected.Assign(1);
-            libnx_entry.connection_status.IsRightJoyConnected.Assign(1);
-            libnx_entry.connection_status.IsLeftJoyWired.Assign(1);
-            libnx_entry.connection_status.IsRightJoyWired.Assign(1);
+            libnx_entry.connection_status.is_wired.Assign(1);
+            libnx_entry.connection_status.is_left_connected.Assign(1);
+            libnx_entry.connection_status.is_right_connected.Assign(1);
+            libnx_entry.connection_status.is_left_wired.Assign(1);
+            libnx_entry.connection_status.is_right_wired.Assign(1);
             break;
         case NPadControllerType::JoyDual:
             dual_entry.connection_status.raw = 0;
-            dual_entry.connection_status.IsConnected.Assign(1);
-            dual_entry.connection_status.IsLeftJoyConnected.Assign(1);
-            dual_entry.connection_status.IsRightJoyConnected.Assign(1);
+            dual_entry.connection_status.is_connected.Assign(1);
+            dual_entry.connection_status.is_left_connected.Assign(1);
+            dual_entry.connection_status.is_right_connected.Assign(1);
             dual_entry.pad.pad_states.raw = pad_state.pad_states.raw;
             dual_entry.pad.l_stick = pad_state.l_stick;
             dual_entry.pad.r_stick = pad_state.r_stick;
 
-            libnx_entry.connection_status.IsLeftJoyConnected.Assign(1);
-            libnx_entry.connection_status.IsRightJoyConnected.Assign(1);
+            libnx_entry.connection_status.is_left_connected.Assign(1);
+            libnx_entry.connection_status.is_right_connected.Assign(1);
             break;
         case NPadControllerType::JoyLeft:
             left_entry.connection_status.raw = 0;
-            left_entry.connection_status.IsConnected.Assign(1);
-            left_entry.connection_status.IsLeftJoyConnected.Assign(1);
+            left_entry.connection_status.is_connected.Assign(1);
+            left_entry.connection_status.is_left_connected.Assign(1);
             left_entry.pad.pad_states.raw = pad_state.pad_states.raw;
             left_entry.pad.l_stick = pad_state.l_stick;
             left_entry.pad.r_stick = pad_state.r_stick;
 
-            libnx_entry.connection_status.IsLeftJoyConnected.Assign(1);
+            libnx_entry.connection_status.is_left_connected.Assign(1);
             break;
         case NPadControllerType::JoyRight:
             right_entry.connection_status.raw = 0;
-            right_entry.connection_status.IsConnected.Assign(1);
-            right_entry.connection_status.IsRightJoyConnected.Assign(1);
+            right_entry.connection_status.is_connected.Assign(1);
+            right_entry.connection_status.is_right_connected.Assign(1);
             right_entry.pad.pad_states.raw = pad_state.pad_states.raw;
             right_entry.pad.l_stick = pad_state.l_stick;
             right_entry.pad.r_stick = pad_state.r_stick;
 
-            libnx_entry.connection_status.IsRightJoyConnected.Assign(1);
+            libnx_entry.connection_status.is_right_connected.Assign(1);
             break;
         case NPadControllerType::Pokeball:
             pokeball_entry.connection_status.raw = 0;
-            pokeball_entry.connection_status.IsConnected.Assign(1);
+            pokeball_entry.connection_status.is_connected.Assign(1);
             pokeball_entry.pad.pad_states.raw = pad_state.pad_states.raw;
             pokeball_entry.pad.l_stick = pad_state.l_stick;
             pokeball_entry.pad.r_stick = pad_state.r_stick;
@@ -554,7 +560,7 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
         }
 
         const std::array<SixAxisGeneric*, 6> controller_sixaxes{
-            &npad.sixaxis_full,       &npad.sixaxis_handheld, &npad.sixaxis_dual_left,
+            &npad.sixaxis_fullkey,    &npad.sixaxis_handheld, &npad.sixaxis_dual_left,
             &npad.sixaxis_dual_right, &npad.sixaxis_left,     &npad.sixaxis_right,
         };
 
@@ -592,7 +598,7 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
         }
 
         auto& full_sixaxis_entry =
-            npad.sixaxis_full.sixaxis[npad.sixaxis_full.common.last_entry_index];
+            npad.sixaxis_fullkey.sixaxis[npad.sixaxis_fullkey.common.last_entry_index];
         auto& handheld_sixaxis_entry =
             npad.sixaxis_handheld.sixaxis[npad.sixaxis_handheld.common.last_entry_index];
         auto& dual_left_sixaxis_entry =
@@ -609,7 +615,9 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
             UNREACHABLE();
             break;
         case NPadControllerType::ProController:
+            full_sixaxis_entry.attribute.raw = 0;
             if (sixaxis_sensors_enabled && motions[i][0]) {
+                full_sixaxis_entry.attribute.is_connected.Assign(1);
                 full_sixaxis_entry.accel = motion_devices[0].accel;
                 full_sixaxis_entry.gyro = motion_devices[0].gyro;
                 full_sixaxis_entry.rotation = motion_devices[0].rotation;
@@ -617,7 +625,9 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
             }
             break;
         case NPadControllerType::Handheld:
+            handheld_sixaxis_entry.attribute.raw = 0;
             if (sixaxis_sensors_enabled && motions[i][0]) {
+                handheld_sixaxis_entry.attribute.is_connected.Assign(1);
                 handheld_sixaxis_entry.accel = motion_devices[0].accel;
                 handheld_sixaxis_entry.gyro = motion_devices[0].gyro;
                 handheld_sixaxis_entry.rotation = motion_devices[0].rotation;
@@ -625,8 +635,11 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
             }
             break;
         case NPadControllerType::JoyDual:
+            dual_left_sixaxis_entry.attribute.raw = 0;
+            dual_right_sixaxis_entry.attribute.raw = 0;
             if (sixaxis_sensors_enabled && motions[i][0]) {
                 // Set motion for the left joycon
+                dual_left_sixaxis_entry.attribute.is_connected.Assign(1);
                 dual_left_sixaxis_entry.accel = motion_devices[0].accel;
                 dual_left_sixaxis_entry.gyro = motion_devices[0].gyro;
                 dual_left_sixaxis_entry.rotation = motion_devices[0].rotation;
@@ -634,6 +647,7 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
             }
             if (sixaxis_sensors_enabled && motions[i][1]) {
                 // Set motion for the right joycon
+                dual_right_sixaxis_entry.attribute.is_connected.Assign(1);
                 dual_right_sixaxis_entry.accel = motion_devices[1].accel;
                 dual_right_sixaxis_entry.gyro = motion_devices[1].gyro;
                 dual_right_sixaxis_entry.rotation = motion_devices[1].rotation;
@@ -641,7 +655,9 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
             }
             break;
         case NPadControllerType::JoyLeft:
+            left_sixaxis_entry.attribute.raw = 0;
             if (sixaxis_sensors_enabled && motions[i][0]) {
+                left_sixaxis_entry.attribute.is_connected.Assign(1);
                 left_sixaxis_entry.accel = motion_devices[0].accel;
                 left_sixaxis_entry.gyro = motion_devices[0].gyro;
                 left_sixaxis_entry.rotation = motion_devices[0].rotation;
@@ -649,7 +665,9 @@ void Controller_NPad::OnMotionUpdate(const Core::Timing::CoreTiming& core_timing
             }
             break;
         case NPadControllerType::JoyRight:
+            right_sixaxis_entry.attribute.raw = 0;
             if (sixaxis_sensors_enabled && motions[i][1]) {
+                right_sixaxis_entry.attribute.is_connected.Assign(1);
                 right_sixaxis_entry.accel = motion_devices[1].accel;
                 right_sixaxis_entry.gyro = motion_devices[1].gyro;
                 right_sixaxis_entry.rotation = motion_devices[1].rotation;
@@ -715,8 +733,8 @@ Controller_NPad::NpadCommunicationMode Controller_NPad::GetNpadCommunicationMode
 void Controller_NPad::SetNpadMode(u32 npad_id, NpadAssignments assignment_mode) {
     const std::size_t npad_index = NPadIdToIndex(npad_id);
     ASSERT(npad_index < shared_memory_entries.size());
-    if (shared_memory_entries[npad_index].pad_assignment != assignment_mode) {
-        shared_memory_entries[npad_index].pad_assignment = assignment_mode;
+    if (shared_memory_entries[npad_index].assignment_mode != assignment_mode) {
+        shared_memory_entries[npad_index].assignment_mode = assignment_mode;
     }
 }
 
@@ -872,13 +890,14 @@ bool Controller_NPad::IsVibrationDeviceMounted(const DeviceHandle& vibration_dev
     return vibration_devices_mounted[npad_index][device_index];
 }
 
-std::shared_ptr<Kernel::ReadableEvent> Controller_NPad::GetStyleSetChangedEvent(u32 npad_id) const {
+std::shared_ptr<Kernel::KReadableEvent> Controller_NPad::GetStyleSetChangedEvent(
+    u32 npad_id) const {
     const auto& styleset_event = styleset_changed_events[NPadIdToIndex(npad_id)];
-    return styleset_event.readable;
+    return styleset_event->GetReadableEvent();
 }
 
 void Controller_NPad::SignalStyleSetChangedEvent(u32 npad_id) const {
-    styleset_changed_events[NPadIdToIndex(npad_id)].writable->Signal();
+    styleset_changed_events[NPadIdToIndex(npad_id)]->GetWritableEvent()->Signal();
 }
 
 void Controller_NPad::AddNewControllerAt(NPadControllerType controller, std::size_t npad_index) {
@@ -923,9 +942,17 @@ void Controller_NPad::DisconnectNpadAtIndex(std::size_t npad_index) {
     connected_controllers[npad_index].is_connected = false;
 
     auto& controller = shared_memory_entries[npad_index];
-    controller.joy_styles.raw = 0; // Zero out
+    controller.style_set.raw = 0; // Zero out
     controller.device_type.raw = 0;
-    controller.properties.raw = 0;
+    controller.system_properties.raw = 0;
+    controller.button_properties.raw = 0;
+    controller.battery_level_dual = 0;
+    controller.battery_level_left = 0;
+    controller.battery_level_right = 0;
+    controller.fullkey_color = {};
+    controller.joycon_color = {};
+    controller.assignment_mode = NpadAssignments::Dual;
+    controller.footer_type = AppletFooterUiType::None;
 
     SignalStyleSetChangedEvent(IndexToNPad(npad_index));
 }
@@ -1101,7 +1128,7 @@ bool Controller_NPad::IsControllerSupported(NPadControllerType controller) const
                     [](u32 npad_id) { return npad_id <= MAX_NPAD_ID; })) {
         switch (controller) {
         case NPadControllerType::ProController:
-            return style.pro_controller;
+            return style.fullkey;
         case NPadControllerType::JoyDual:
             return style.joycon_dual;
         case NPadControllerType::JoyLeft:
@@ -1109,7 +1136,7 @@ bool Controller_NPad::IsControllerSupported(NPadControllerType controller) const
         case NPadControllerType::JoyRight:
             return style.joycon_right;
         case NPadControllerType::Pokeball:
-            return style.pokeball;
+            return style.palma;
         default:
             return false;
         }

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

@@ -10,10 +10,14 @@
 #include "common/common_types.h"
 #include "core/frontend/input.h"
 #include "core/hle/kernel/object.h"
-#include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/hid/controllers/controller_base.h"
 #include "core/settings.h"
 
+namespace Kernel {
+class KEvent;
+class KReadableEvent;
+} // namespace Kernel
+
 namespace Service::HID {
 
 constexpr u32 NPAD_HANDHELD = 32;
@@ -90,10 +94,10 @@ public:
     };
 
     enum class NpadCommunicationMode : u64 {
-        Unknown0 = 0,
-        Unknown1 = 1,
-        Unknown2 = 2,
-        Unknown3 = 3,
+        Mode_5ms = 0,
+        Mode_10ms = 1,
+        Mode_15ms = 2,
+        Default = 3,
     };
 
     struct DeviceHandle {
@@ -108,13 +112,18 @@ public:
         union {
             u32_le raw{};
 
-            BitField<0, 1, u32> pro_controller;
+            BitField<0, 1, u32> fullkey;
             BitField<1, 1, u32> handheld;
             BitField<2, 1, u32> joycon_dual;
             BitField<3, 1, u32> joycon_left;
             BitField<4, 1, u32> joycon_right;
-
-            BitField<6, 1, u32> pokeball; // TODO(ogniK): Confirm when possible
+            BitField<5, 1, u32> gamecube;
+            BitField<6, 1, u32> palma;
+            BitField<7, 1, u32> lark;
+            BitField<8, 1, u32> handheld_lark;
+            BitField<9, 1, u32> lucia;
+            BitField<29, 1, u32> system_ext;
+            BitField<30, 1, u32> system;
         };
     };
     static_assert(sizeof(NpadStyleSet) == 4, "NpadStyleSet is an invalid size");
@@ -187,7 +196,7 @@ public:
 
     bool IsVibrationDeviceMounted(const DeviceHandle& vibration_device_handle) const;
 
-    std::shared_ptr<Kernel::ReadableEvent> GetStyleSetChangedEvent(u32 npad_id) const;
+    std::shared_ptr<Kernel::KReadableEvent> GetStyleSetChangedEvent(u32 npad_id) const;
     void SignalStyleSetChangedEvent(u32 npad_id) const;
 
     // Adds a new controller at an index.
@@ -238,12 +247,32 @@ private:
     };
     static_assert(sizeof(CommonHeader) == 0x20, "CommonHeader is an invalid size");
 
+    enum class ColorAttributes : u32_le {
+        Ok = 0,
+        ReadError = 1,
+        NoController = 2,
+    };
+    static_assert(sizeof(ColorAttributes) == 4, "ColorAttributes is an invalid size");
+
     struct ControllerColor {
-        u32_le body_color;
-        u32_le button_color;
+        u32_le body;
+        u32_le button;
     };
     static_assert(sizeof(ControllerColor) == 8, "ControllerColor is an invalid size");
 
+    struct FullKeyColor {
+        ColorAttributes attribute;
+        ControllerColor fullkey;
+    };
+    static_assert(sizeof(FullKeyColor) == 0xC, "FullKeyColor is an invalid size");
+
+    struct JoyconColor {
+        ColorAttributes attribute;
+        ControllerColor left;
+        ControllerColor right;
+    };
+    static_assert(sizeof(JoyconColor) == 0x14, "JoyconColor is an invalid size");
+
     struct ControllerPadState {
         union {
             u64_le raw{};
@@ -285,6 +314,9 @@ private:
 
             BitField<26, 1, u64> right_sl;
             BitField<27, 1, u64> right_sr;
+
+            BitField<28, 1, u64> palma;
+            BitField<30, 1, u64> handheld_left_b;
         };
     };
     static_assert(sizeof(ControllerPadState) == 8, "ControllerPadState is an invalid size");
@@ -298,12 +330,12 @@ private:
     struct ConnectionState {
         union {
             u32_le raw{};
-            BitField<0, 1, u32> IsConnected;
-            BitField<1, 1, u32> IsWired;
-            BitField<2, 1, u32> IsLeftJoyConnected;
-            BitField<3, 1, u32> IsLeftJoyWired;
-            BitField<4, 1, u32> IsRightJoyConnected;
-            BitField<5, 1, u32> IsRightJoyWired;
+            BitField<0, 1, u32> is_connected;
+            BitField<1, 1, u32> is_wired;
+            BitField<2, 1, u32> is_left_connected;
+            BitField<3, 1, u32> is_left_wired;
+            BitField<4, 1, u32> is_right_connected;
+            BitField<5, 1, u32> is_right_wired;
         };
     };
     static_assert(sizeof(ConnectionState) == 4, "ConnectionState is an invalid size");
@@ -329,6 +361,15 @@ private:
     };
     static_assert(sizeof(NPadGeneric) == 0x350, "NPadGeneric is an invalid size");
 
+    struct SixAxisAttributes {
+        union {
+            u32_le raw{};
+            BitField<0, 1, u32> is_connected;
+            BitField<1, 1, u32> is_interpolated;
+        };
+    };
+    static_assert(sizeof(SixAxisAttributes) == 4, "SixAxisAttributes is an invalid size");
+
     struct SixAxisStates {
         s64_le timestamp{};
         INSERT_PADDING_WORDS(2);
@@ -337,7 +378,8 @@ private:
         Common::Vec3f gyro{};
         Common::Vec3f rotation{};
         std::array<Common::Vec3f, 3> orientation{};
-        s64_le always_one{1};
+        SixAxisAttributes attribute;
+        INSERT_PADDING_BYTES(4); // Reserved
     };
     static_assert(sizeof(SixAxisStates) == 0x68, "SixAxisStates is an invalid size");
 
@@ -347,32 +389,54 @@ private:
     };
     static_assert(sizeof(SixAxisGeneric) == 0x708, "SixAxisGeneric is an invalid size");
 
-    enum class ColorReadError : u32_le {
-        ReadOk = 0,
-        ColorDoesntExist = 1,
-        NoController = 2,
-    };
-
-    struct NPadProperties {
+    struct NPadSystemProperties {
         union {
             s64_le raw{};
+            BitField<0, 1, s64> is_charging_joy_dual;
+            BitField<1, 1, s64> is_charging_joy_left;
+            BitField<2, 1, s64> is_charging_joy_right;
+            BitField<3, 1, s64> is_powered_joy_dual;
+            BitField<4, 1, s64> is_powered_joy_left;
+            BitField<5, 1, s64> is_powered_joy_right;
+            BitField<9, 1, s64> is_system_unsupported_button;
+            BitField<10, 1, s64> is_system_ext_unsupported_button;
             BitField<11, 1, s64> is_vertical;
             BitField<12, 1, s64> is_horizontal;
             BitField<13, 1, s64> use_plus;
             BitField<14, 1, s64> use_minus;
+            BitField<15, 1, s64> use_directional_buttons;
         };
     };
+    static_assert(sizeof(NPadSystemProperties) == 0x8, "NPadSystemProperties is an invalid size");
+
+    struct NPadButtonProperties {
+        union {
+            s32_le raw{};
+            BitField<0, 1, s32> is_home_button_protection_enabled;
+        };
+    };
+    static_assert(sizeof(NPadButtonProperties) == 0x4, "NPadButtonProperties is an invalid size");
 
     struct NPadDevice {
         union {
             u32_le raw{};
-            BitField<0, 1, s32> pro_controller;
-            BitField<1, 1, s32> handheld;
+            BitField<0, 1, s32> fullkey;
+            BitField<1, 1, s32> debug_pad;
             BitField<2, 1, s32> handheld_left;
             BitField<3, 1, s32> handheld_right;
             BitField<4, 1, s32> joycon_left;
             BitField<5, 1, s32> joycon_right;
-            BitField<6, 1, s32> pokeball;
+            BitField<6, 1, s32> palma;
+            BitField<7, 1, s32> lark_hvc_left;
+            BitField<8, 1, s32> lark_hvc_right;
+            BitField<9, 1, s32> lark_nes_left;
+            BitField<10, 1, s32> lark_nes_right;
+            BitField<11, 1, s32> handheld_lark_hvc_left;
+            BitField<12, 1, s32> handheld_lark_hvc_right;
+            BitField<13, 1, s32> handheld_lark_nes_left;
+            BitField<14, 1, s32> handheld_lark_nes_right;
+            BitField<15, 1, s32> lucia;
+            BitField<31, 1, s32> system;
         };
     };
 
@@ -383,37 +447,69 @@ private:
         std::array<Common::Vec3f, 3> orientation;
     };
 
+    struct NfcXcdHandle {
+        INSERT_PADDING_BYTES(0x60);
+    };
+
+    struct AppletFooterUiAttributes {
+        INSERT_PADDING_BYTES(0x4);
+    };
+
+    enum class AppletFooterUiType : u8 {
+        None = 0,
+        HandheldNone = 1,
+        HandheldJoyConLeftOnly = 1,
+        HandheldJoyConRightOnly = 3,
+        HandheldJoyConLeftJoyConRight = 4,
+        JoyDual = 5,
+        JoyDualLeftOnly = 6,
+        JoyDualRightOnly = 7,
+        JoyLeftHorizontal = 8,
+        JoyLeftVertical = 9,
+        JoyRightHorizontal = 10,
+        JoyRightVertical = 11,
+        SwitchProController = 12,
+        CompatibleProController = 13,
+        CompatibleJoyCon = 14,
+        LarkHvc1 = 15,
+        LarkHvc2 = 16,
+        LarkNesLeft = 17,
+        LarkNesRight = 18,
+        Lucia = 19,
+        Verification = 20,
+    };
+
     struct NPadEntry {
-        NpadStyleSet joy_styles;
-        NpadAssignments pad_assignment;
+        NpadStyleSet style_set;
+        NpadAssignments assignment_mode;
+        FullKeyColor fullkey_color;
+        JoyconColor joycon_color;
 
-        ColorReadError single_color_error;
-        ControllerColor single_color;
-
-        ColorReadError dual_color_error;
-        ControllerColor left_color;
-        ControllerColor right_color;
-
-        NPadGeneric main_controller_states;
+        NPadGeneric fullkey_states;
         NPadGeneric handheld_states;
-        NPadGeneric dual_states;
-        NPadGeneric left_joy_states;
-        NPadGeneric right_joy_states;
-        NPadGeneric pokeball_states;
-        NPadGeneric libnx; // TODO(ogniK): Find out what this actually is, libnx seems to only be
-                           // relying on this for the time being
-        SixAxisGeneric sixaxis_full;
+        NPadGeneric joy_dual_states;
+        NPadGeneric joy_left_states;
+        NPadGeneric joy_right_states;
+        NPadGeneric palma_states;
+        NPadGeneric system_ext_states;
+        SixAxisGeneric sixaxis_fullkey;
         SixAxisGeneric sixaxis_handheld;
         SixAxisGeneric sixaxis_dual_left;
         SixAxisGeneric sixaxis_dual_right;
         SixAxisGeneric sixaxis_left;
         SixAxisGeneric sixaxis_right;
         NPadDevice device_type;
-        NPadProperties properties;
-        INSERT_PADDING_WORDS(1);
-        std::array<u32, 3> battery_level;
-        INSERT_PADDING_BYTES(0x5c);
-        INSERT_PADDING_BYTES(0xdf8);
+        INSERT_PADDING_BYTES(0x4); // reserved
+        NPadSystemProperties system_properties;
+        NPadButtonProperties button_properties;
+        u32 battery_level_dual;
+        u32 battery_level_left;
+        u32 battery_level_right;
+        AppletFooterUiAttributes footer_attributes;
+        AppletFooterUiType footer_type;
+        // nfc_states needs to be checked switchbrew does not match with HW
+        NfcXcdHandle nfc_states;
+        INSERT_PADDING_BYTES(0xdef);
     };
     static_assert(sizeof(NPadEntry) == 0x5000, "NPadEntry is an invalid size");
 
@@ -449,10 +545,9 @@ private:
     std::vector<u32> supported_npad_id_types{};
     NpadHoldType hold_type{NpadHoldType::Vertical};
     NpadHandheldActivationMode handheld_activation_mode{NpadHandheldActivationMode::Dual};
-    // NpadCommunicationMode is unknown, default value is 1
-    NpadCommunicationMode communication_mode{NpadCommunicationMode::Unknown1};
+    NpadCommunicationMode communication_mode{NpadCommunicationMode::Default};
     // Each controller should have their own styleset changed event
-    std::array<Kernel::EventPair, 10> styleset_changed_events;
+    std::array<std::shared_ptr<Kernel::KEvent>, 10> styleset_changed_events;
     std::array<std::array<std::chrono::steady_clock::time_point, 2>, 10> last_vibration_timepoints;
     std::array<std::array<VibrationValue, 2>, 10> latest_vibration_values{};
     bool permit_vibration_session_enabled{false};

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

@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include "common/bit_field.h"
 #include "common/common_funcs.h"
 #include "common/common_types.h"
 #include "common/swap.h"
@@ -28,6 +29,67 @@ public:
     void OnLoadInputDevices() override;
 
 private:
+    struct Attributes {
+        union {
+            u32_le raw{};
+            BitField<0, 1, u32> is_connected;
+            BitField<1, 1, u32> is_wired;
+            BitField<2, 1, u32> is_left_connected;
+            BitField<3, 1, u32> is_left_wired;
+            BitField<4, 1, u32> is_right_connected;
+            BitField<5, 1, u32> is_right_wired;
+        };
+    };
+    static_assert(sizeof(Attributes) == 4, "Attributes is an invalid size");
+
+    struct Buttons {
+        union {
+            u32_le raw{};
+            // Button states
+            BitField<0, 1, u32> a;
+            BitField<1, 1, u32> b;
+            BitField<2, 1, u32> x;
+            BitField<3, 1, u32> y;
+            BitField<4, 1, u32> l_stick;
+            BitField<5, 1, u32> r_stick;
+            BitField<6, 1, u32> l;
+            BitField<7, 1, u32> r;
+            BitField<8, 1, u32> zl;
+            BitField<9, 1, u32> zr;
+            BitField<10, 1, u32> plus;
+            BitField<11, 1, u32> minus;
+
+            // D-Pad
+            BitField<12, 1, u32> d_left;
+            BitField<13, 1, u32> d_up;
+            BitField<14, 1, u32> d_right;
+            BitField<15, 1, u32> d_down;
+
+            // Left JoyStick
+            BitField<16, 1, u32> l_stick_left;
+            BitField<17, 1, u32> l_stick_up;
+            BitField<18, 1, u32> l_stick_right;
+            BitField<19, 1, u32> l_stick_down;
+
+            // Right JoyStick
+            BitField<20, 1, u32> r_stick_left;
+            BitField<21, 1, u32> r_stick_up;
+            BitField<22, 1, u32> r_stick_right;
+            BitField<23, 1, u32> r_stick_down;
+
+            // Not always active?
+            BitField<24, 1, u32> left_sl;
+            BitField<25, 1, u32> left_sr;
+
+            BitField<26, 1, u32> right_sl;
+            BitField<27, 1, u32> right_sr;
+
+            BitField<28, 1, u32> palma;
+            BitField<30, 1, u32> handheld_left_b;
+        };
+    };
+    static_assert(sizeof(Buttons) == 4, "Buttons is an invalid size");
+
     struct AnalogStick {
         s32_le x;
         s32_le y;
@@ -37,10 +99,10 @@ private:
     struct XPadState {
         s64_le sampling_number;
         s64_le sampling_number2;
-        s32_le attributes;
-        u32_le pad_states;
-        AnalogStick x_stick;
-        AnalogStick y_stick;
+        Attributes attributes;
+        Buttons pad_states;
+        AnalogStick l_stick;
+        AnalogStick r_stick;
     };
     static_assert(sizeof(XPadState) == 0x28, "XPadState is an invalid size");