service/acc: Rename Unknown160 to InitializeApplicationInfoV2

service: acc: Stub acc:u0 '160'

src/common/CMakeLists.txt

@@ -55,6 +55,7 @@ add_library(common STATIC
     dynamic_library.h
     error.cpp
     error.h
+    expected.h
     fiber.cpp
     fiber.h
     fs/file.cpp

src/common/expected.h

@@ -0,0 +1,987 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+// This is based on the proposed implementation of std::expected (P0323)
+// https://github.com/TartanLlama/expected/blob/master/include/tl/expected.hpp
+
+#pragma once
+
+#include <type_traits>
+#include <utility>
+
+namespace Common {
+
+template <typename T, typename E>
+class Expected;
+
+template <typename E>
+class Unexpected {
+public:
+    Unexpected() = delete;
+
+    constexpr explicit Unexpected(const E& e) : m_val{e} {}
+
+    constexpr explicit Unexpected(E&& e) : m_val{std::move(e)} {}
+
+    constexpr E& value() & {
+        return m_val;
+    }
+
+    constexpr const E& value() const& {
+        return m_val;
+    }
+
+    constexpr E&& value() && {
+        return std::move(m_val);
+    }
+
+    constexpr const E&& value() const&& {
+        return std::move(m_val);
+    }
+
+private:
+    E m_val;
+};
+
+template <typename E>
+constexpr auto operator<=>(const Unexpected<E>& lhs, const Unexpected<E>& rhs) {
+    return lhs.value() <=> rhs.value();
+}
+
+struct unexpect_t {
+    constexpr explicit unexpect_t() = default;
+};
+
+namespace detail {
+
+struct no_init_t {
+    constexpr explicit no_init_t() = default;
+};
+
+/**
+ * This specialization is for when T is not trivially destructible,
+ * so the destructor must be called on destruction of `expected'
+ * Additionally, this requires E to be trivially destructible
+ */
+template <typename T, typename E, bool = std::is_trivially_destructible_v<T>>
+requires std::is_trivially_destructible_v<E>
+struct expected_storage_base {
+    constexpr expected_storage_base() : m_val{T{}}, m_has_val{true} {}
+
+    constexpr expected_storage_base(no_init_t) : m_has_val{false} {}
+
+    template <typename... Args, std::enable_if_t<std::is_constructible_v<T, Args&&...>>* = nullptr>
+    constexpr expected_storage_base(std::in_place_t, Args&&... args)
+        : m_val{std::forward<Args>(args)...}, m_has_val{true} {}
+
+    template <typename U, typename... Args,
+              std::enable_if_t<std::is_constructible_v<T, std::initializer_list<U>&, Args&&...>>* =
+                  nullptr>
+    constexpr expected_storage_base(std::in_place_t, std::initializer_list<U> il, Args&&... args)
+        : m_val{il, std::forward<Args>(args)...}, m_has_val{true} {}
+
+    template <typename... Args, std::enable_if_t<std::is_constructible_v<E, Args&&...>>* = nullptr>
+    constexpr explicit expected_storage_base(unexpect_t, Args&&... args)
+        : m_unexpect{std::forward<Args>(args)...}, m_has_val{false} {}
+
+    template <typename U, typename... Args,
+              std::enable_if_t<std::is_constructible_v<E, std::initializer_list<U>&, Args&&...>>* =
+                  nullptr>
+    constexpr explicit expected_storage_base(unexpect_t, std::initializer_list<U> il,
+                                             Args&&... args)
+        : m_unexpect{il, std::forward<Args>(args)...}, m_has_val{false} {}
+
+    ~expected_storage_base() {
+        if (m_has_val) {
+            m_val.~T();
+        }
+    }
+
+    union {
+        T m_val;
+        Unexpected<E> m_unexpect;
+    };
+
+    bool m_has_val;
+};
+
+/**
+ * This specialization is for when T is trivially destructible,
+ * so the destructor of `expected` can be trivial
+ * Additionally, this requires E to be trivially destructible
+ */
+template <typename T, typename E>
+requires std::is_trivially_destructible_v<E>
+struct expected_storage_base<T, E, true> {
+    constexpr expected_storage_base() : m_val{T{}}, m_has_val{true} {}
+
+    constexpr expected_storage_base(no_init_t) : m_has_val{false} {}
+
+    template <typename... Args, std::enable_if_t<std::is_constructible_v<T, Args&&...>>* = nullptr>
+    constexpr expected_storage_base(std::in_place_t, Args&&... args)
+        : m_val{std::forward<Args>(args)...}, m_has_val{true} {}
+
+    template <typename U, typename... Args,
+              std::enable_if_t<std::is_constructible_v<T, std::initializer_list<U>&, Args&&...>>* =
+                  nullptr>
+    constexpr expected_storage_base(std::in_place_t, std::initializer_list<U> il, Args&&... args)
+        : m_val{il, std::forward<Args>(args)...}, m_has_val{true} {}
+
+    template <typename... Args, std::enable_if_t<std::is_constructible_v<E, Args&&...>>* = nullptr>
+    constexpr explicit expected_storage_base(unexpect_t, Args&&... args)
+        : m_unexpect{std::forward<Args>(args)...}, m_has_val{false} {}
+
+    template <typename U, typename... Args,
+              std::enable_if_t<std::is_constructible_v<E, std::initializer_list<U>&, Args&&...>>* =
+                  nullptr>
+    constexpr explicit expected_storage_base(unexpect_t, std::initializer_list<U> il,
+                                             Args&&... args)
+        : m_unexpect{il, std::forward<Args>(args)...}, m_has_val{false} {}
+
+    ~expected_storage_base() = default;
+
+    union {
+        T m_val;
+        Unexpected<E> m_unexpect;
+    };
+
+    bool m_has_val;
+};
+
+template <typename T, typename E>
+struct expected_operations_base : expected_storage_base<T, E> {
+    using expected_storage_base<T, E>::expected_storage_base;
+
+    template <typename... Args>
+    void construct(Args&&... args) noexcept {
+        new (std::addressof(this->m_val)) T{std::forward<Args>(args)...};
+        this->m_has_val = true;
+    }
+
+    template <typename Rhs>
+    void construct_with(Rhs&& rhs) noexcept {
+        new (std::addressof(this->m_val)) T{std::forward<Rhs>(rhs).get()};
+        this->m_has_val = true;
+    }
+
+    template <typename... Args>
+    void construct_error(Args&&... args) noexcept {
+        new (std::addressof(this->m_unexpect)) Unexpected<E>{std::forward<Args>(args)...};
+        this->m_has_val = false;
+    }
+
+    void assign(const expected_operations_base& rhs) noexcept {
+        if (!this->m_has_val && rhs.m_has_val) {
+            geterr().~Unexpected<E>();
+            construct(rhs.get());
+        } else {
+            assign_common(rhs);
+        }
+    }
+
+    void assign(expected_operations_base&& rhs) noexcept {
+        if (!this->m_has_val && rhs.m_has_val) {
+            geterr().~Unexpected<E>();
+            construct(std::move(rhs).get());
+        } else {
+            assign_common(rhs);
+        }
+    }
+
+    template <typename Rhs>
+    void assign_common(Rhs&& rhs) {
+        if (this->m_has_val) {
+            if (rhs.m_has_val) {
+                get() = std::forward<Rhs>(rhs).get();
+            } else {
+                destroy_val();
+                construct_error(std::forward<Rhs>(rhs).geterr());
+            }
+        } else {
+            if (!rhs.m_has_val) {
+                geterr() = std::forward<Rhs>(rhs).geterr();
+            }
+        }
+    }
+
+    bool has_value() const {
+        return this->m_has_val;
+    }
+
+    constexpr T& get() & {
+        return this->m_val;
+    }
+
+    constexpr const T& get() const& {
+        return this->m_val;
+    }
+
+    constexpr T&& get() && {
+        return std::move(this->m_val);
+    }
+
+    constexpr const T&& get() const&& {
+        return std::move(this->m_val);
+    }
+
+    constexpr Unexpected<E>& geterr() & {
+        return this->m_unexpect;
+    }
+
+    constexpr const Unexpected<E>& geterr() const& {
+        return this->m_unexpect;
+    }
+
+    constexpr Unexpected<E>&& geterr() && {
+        return std::move(this->m_unexpect);
+    }
+
+    constexpr const Unexpected<E>&& geterr() const&& {
+        return std::move(this->m_unexpect);
+    }
+
+    constexpr void destroy_val() {
+        get().~T();
+    }
+};
+
+/**
+ * This manages conditionally having a trivial copy constructor
+ * This specialization is for when T is trivially copy constructible
+ * Additionally, this requires E to be trivially copy constructible
+ */
+template <typename T, typename E, bool = std::is_trivially_copy_constructible_v<T>>
+requires std::is_trivially_copy_constructible_v<E>
+struct expected_copy_base : expected_operations_base<T, E> {
+    using expected_operations_base<T, E>::expected_operations_base;
+};
+
+/**
+ * This specialization is for when T is not trivially copy constructible
+ * Additionally, this requires E to be trivially copy constructible
+ */
+template <typename T, typename E>
+requires std::is_trivially_copy_constructible_v<E>
+struct expected_copy_base<T, E, false> : expected_operations_base<T, E> {
+    using expected_operations_base<T, E>::expected_operations_base;
+
+    expected_copy_base() = default;
+
+    expected_copy_base(const expected_copy_base& rhs)
+        : expected_operations_base<T, E>{no_init_t{}} {
+        if (rhs.has_value()) {
+            this->construct_with(rhs);
+        } else {
+            this->construct_error(rhs.geterr());
+        }
+    }
+
+    expected_copy_base(expected_copy_base&&) = default;
+
+    expected_copy_base& operator=(const expected_copy_base&) = default;
+
+    expected_copy_base& operator=(expected_copy_base&&) = default;
+};
+
+/**
+ * This manages conditionally having a trivial move constructor
+ * This specialization is for when T is trivially move constructible
+ * Additionally, this requires E to be trivially move constructible
+ */
+template <typename T, typename E, bool = std::is_trivially_move_constructible_v<T>>
+requires std::is_trivially_move_constructible_v<E>
+struct expected_move_base : expected_copy_base<T, E> {
+    using expected_copy_base<T, E>::expected_copy_base;
+};
+
+/**
+ * This specialization is for when T is not trivially move constructible
+ * Additionally, this requires E to be trivially move constructible
+ */
+template <typename T, typename E>
+requires std::is_trivially_move_constructible_v<E>
+struct expected_move_base<T, E, false> : expected_copy_base<T, E> {
+    using expected_copy_base<T, E>::expected_copy_base;
+
+    expected_move_base() = default;
+
+    expected_move_base(const expected_move_base&) = default;
+
+    expected_move_base(expected_move_base&& rhs) noexcept(std::is_nothrow_move_constructible_v<T>)
+        : expected_copy_base<T, E>{no_init_t{}} {
+        if (rhs.has_value()) {
+            this->construct_with(std::move(rhs));
+        } else {
+            this->construct_error(std::move(rhs.geterr()));
+        }
+    }
+
+    expected_move_base& operator=(const expected_move_base&) = default;
+
+    expected_move_base& operator=(expected_move_base&&) = default;
+};
+
+/**
+ * This manages conditionally having a trivial copy assignment operator
+ * This specialization is for when T is trivially copy assignable
+ * Additionally, this requires E to be trivially copy assignable
+ */
+template <typename T, typename E,
+          bool = std::conjunction_v<std::is_trivially_copy_assignable<T>,
+                                    std::is_trivially_copy_constructible<T>,
+                                    std::is_trivially_destructible<T>>>
+requires std::conjunction_v<std::is_trivially_copy_assignable<E>,
+                            std::is_trivially_copy_constructible<E>,
+                            std::is_trivially_destructible<E>>
+struct expected_copy_assign_base : expected_move_base<T, E> {
+    using expected_move_base<T, E>::expected_move_base;
+};
+
+/**
+ * This specialization is for when T is not trivially copy assignable
+ * Additionally, this requires E to be trivially copy assignable
+ */
+template <typename T, typename E>
+requires std::conjunction_v<std::is_trivially_copy_assignable<E>,
+                            std::is_trivially_copy_constructible<E>,
+                            std::is_trivially_destructible<E>>
+struct expected_copy_assign_base<T, E, false> : expected_move_base<T, E> {
+    using expected_move_base<T, E>::expected_move_base;
+
+    expected_copy_assign_base() = default;
+
+    expected_copy_assign_base(const expected_copy_assign_base&) = default;
+
+    expected_copy_assign_base(expected_copy_assign_base&&) = default;
+
+    expected_copy_assign_base& operator=(const expected_copy_assign_base& rhs) {
+        this->assign(rhs);
+        return *this;
+    }
+
+    expected_copy_assign_base& operator=(expected_copy_assign_base&&) = default;
+};
+
+/**
+ * This manages conditionally having a trivial move assignment operator
+ * This specialization is for when T is trivially move assignable
+ * Additionally, this requires E to be trivially move assignable
+ */
+template <typename T, typename E,
+          bool = std::conjunction_v<std::is_trivially_move_assignable<T>,
+                                    std::is_trivially_move_constructible<T>,
+                                    std::is_trivially_destructible<T>>>
+requires std::conjunction_v<std::is_trivially_move_assignable<E>,
+                            std::is_trivially_move_constructible<E>,
+                            std::is_trivially_destructible<E>>
+struct expected_move_assign_base : expected_copy_assign_base<T, E> {
+    using expected_copy_assign_base<T, E>::expected_copy_assign_base;
+};
+
+/**
+ * This specialization is for when T is not trivially move assignable
+ * Additionally, this requires E to be trivially move assignable
+ */
+template <typename T, typename E>
+requires std::conjunction_v<std::is_trivially_move_assignable<E>,
+                            std::is_trivially_move_constructible<E>,
+                            std::is_trivially_destructible<E>>
+struct expected_move_assign_base<T, E, false> : expected_copy_assign_base<T, E> {
+    using expected_copy_assign_base<T, E>::expected_copy_assign_base;
+
+    expected_move_assign_base() = default;
+
+    expected_move_assign_base(const expected_move_assign_base&) = default;
+
+    expected_move_assign_base(expected_move_assign_base&&) = default;
+
+    expected_move_assign_base& operator=(const expected_move_assign_base&) = default;
+
+    expected_move_assign_base& operator=(expected_move_assign_base&& rhs) noexcept(
+        std::conjunction_v<std::is_nothrow_move_constructible<T>,
+                           std::is_nothrow_move_assignable<T>>) {
+        this->assign(std::move(rhs));
+        return *this;
+    }
+};
+
+/**
+ * expected_delete_ctor_base will conditionally delete copy and move constructors
+ * depending on whether T is copy/move constructible
+ * Additionally, this requires E to be copy/move constructible
+ */
+template <typename T, typename E, bool EnableCopy = std::is_copy_constructible_v<T>,
+          bool EnableMove = std::is_move_constructible_v<T>>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
+struct expected_delete_ctor_base {
+    expected_delete_ctor_base() = default;
+    expected_delete_ctor_base(const expected_delete_ctor_base&) = default;
+    expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = default;
+    expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
+    expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
+};
+
+template <typename T, typename E>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
+struct expected_delete_ctor_base<T, E, true, false> {
+    expected_delete_ctor_base() = default;
+    expected_delete_ctor_base(const expected_delete_ctor_base&) = default;
+    expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = delete;
+    expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
+    expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
+};
+
+template <typename T, typename E>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
+struct expected_delete_ctor_base<T, E, false, true> {
+    expected_delete_ctor_base() = default;
+    expected_delete_ctor_base(const expected_delete_ctor_base&) = delete;
+    expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = default;
+    expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
+    expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
+};
+
+template <typename T, typename E>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>>
+struct expected_delete_ctor_base<T, E, false, false> {
+    expected_delete_ctor_base() = default;
+    expected_delete_ctor_base(const expected_delete_ctor_base&) = delete;
+    expected_delete_ctor_base(expected_delete_ctor_base&&) noexcept = delete;
+    expected_delete_ctor_base& operator=(const expected_delete_ctor_base&) = default;
+    expected_delete_ctor_base& operator=(expected_delete_ctor_base&&) noexcept = default;
+};
+
+/**
+ * expected_delete_assign_base will conditionally delete copy and move assignment operators
+ * depending on whether T is copy/move constructible + assignable
+ * Additionally, this requires E to be copy/move constructible + assignable
+ */
+template <
+    typename T, typename E,
+    bool EnableCopy = std::conjunction_v<std::is_copy_constructible<T>, std::is_copy_assignable<T>>,
+    bool EnableMove = std::conjunction_v<std::is_move_constructible<T>, std::is_move_assignable<T>>>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
+                            std::is_copy_assignable<E>, std::is_move_assignable<E>>
+struct expected_delete_assign_base {
+    expected_delete_assign_base() = default;
+    expected_delete_assign_base(const expected_delete_assign_base&) = default;
+    expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
+    expected_delete_assign_base& operator=(const expected_delete_assign_base&) = default;
+    expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = default;
+};
+
+template <typename T, typename E>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
+                            std::is_copy_assignable<E>, std::is_move_assignable<E>>
+struct expected_delete_assign_base<T, E, true, false> {
+    expected_delete_assign_base() = default;
+    expected_delete_assign_base(const expected_delete_assign_base&) = default;
+    expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
+    expected_delete_assign_base& operator=(const expected_delete_assign_base&) = default;
+    expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = delete;
+};
+
+template <typename T, typename E>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
+                            std::is_copy_assignable<E>, std::is_move_assignable<E>>
+struct expected_delete_assign_base<T, E, false, true> {
+    expected_delete_assign_base() = default;
+    expected_delete_assign_base(const expected_delete_assign_base&) = default;
+    expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
+    expected_delete_assign_base& operator=(const expected_delete_assign_base&) = delete;
+    expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = default;
+};
+
+template <typename T, typename E>
+requires std::conjunction_v<std::is_copy_constructible<E>, std::is_move_constructible<E>,
+                            std::is_copy_assignable<E>, std::is_move_assignable<E>>
+struct expected_delete_assign_base<T, E, false, false> {
+    expected_delete_assign_base() = default;
+    expected_delete_assign_base(const expected_delete_assign_base&) = default;
+    expected_delete_assign_base(expected_delete_assign_base&&) noexcept = default;
+    expected_delete_assign_base& operator=(const expected_delete_assign_base&) = delete;
+    expected_delete_assign_base& operator=(expected_delete_assign_base&&) noexcept = delete;
+};
+
+/**
+ * This is needed to be able to construct the expected_default_ctor_base which follows,
+ * while still conditionally deleting the default constructor.
+ */
+struct default_constructor_tag {
+    constexpr explicit default_constructor_tag() = default;
+};
+
+/**
+ * expected_default_ctor_base will ensure that expected
+ * has a deleted default constructor if T is not default constructible
+ * This specialization is for when T is default constructible
+ */
+template <typename T, typename E, bool Enable = std::is_default_constructible_v<T>>
+struct expected_default_ctor_base {
+    constexpr expected_default_ctor_base() noexcept = default;
+    constexpr expected_default_ctor_base(expected_default_ctor_base const&) noexcept = default;
+    constexpr expected_default_ctor_base(expected_default_ctor_base&&) noexcept = default;
+    expected_default_ctor_base& operator=(expected_default_ctor_base const&) noexcept = default;
+    expected_default_ctor_base& operator=(expected_default_ctor_base&&) noexcept = default;
+
+    constexpr explicit expected_default_ctor_base(default_constructor_tag) {}
+};
+
+template <typename T, typename E>
+struct expected_default_ctor_base<T, E, false> {
+    constexpr expected_default_ctor_base() noexcept = delete;
+    constexpr expected_default_ctor_base(expected_default_ctor_base const&) noexcept = default;
+    constexpr expected_default_ctor_base(expected_default_ctor_base&&) noexcept = default;
+    expected_default_ctor_base& operator=(expected_default_ctor_base const&) noexcept = default;
+    expected_default_ctor_base& operator=(expected_default_ctor_base&&) noexcept = default;
+
+    constexpr explicit expected_default_ctor_base(default_constructor_tag) {}
+};
+
+template <typename T, typename E, typename U>
+using expected_enable_forward_value =
+    std::enable_if_t<std::is_constructible_v<T, U&&> &&
+                     !std::is_same_v<std::remove_cvref_t<U>, std::in_place_t> &&
+                     !std::is_same_v<Expected<T, E>, std::remove_cvref_t<U>> &&
+                     !std::is_same_v<Unexpected<E>, std::remove_cvref_t<U>>>;
+
+template <typename T, typename E, typename U, typename G, typename UR, typename GR>
+using expected_enable_from_other = std::enable_if_t<
+    std::is_constructible_v<T, UR> && std::is_constructible_v<E, GR> &&
+    !std::is_constructible_v<T, Expected<U, G>&> && !std::is_constructible_v<T, Expected<U, G>&&> &&
+    !std::is_constructible_v<T, const Expected<U, G>&> &&
+    !std::is_constructible_v<T, const Expected<U, G>&&> &&
+    !std::is_convertible_v<Expected<U, G>&, T> && !std::is_convertible_v<Expected<U, G>&&, T> &&
+    !std::is_convertible_v<const Expected<U, G>&, T> &&
+    !std::is_convertible_v<const Expected<U, G>&&, T>>;
+
+} // namespace detail
+
+template <typename T, typename E>
+class Expected : private detail::expected_move_assign_base<T, E>,
+                 private detail::expected_delete_ctor_base<T, E>,
+                 private detail::expected_delete_assign_base<T, E>,
+                 private detail::expected_default_ctor_base<T, E> {
+public:
+    using value_type = T;
+    using error_type = E;
+    using unexpected_type = Unexpected<E>;
+
+    constexpr Expected() = default;
+    constexpr Expected(const Expected&) = default;
+    constexpr Expected(Expected&&) = default;
+    Expected& operator=(const Expected&) = default;
+    Expected& operator=(Expected&&) = default;
+
+    template <typename... Args, std::enable_if_t<std::is_constructible_v<T, Args&&...>>* = nullptr>
+    constexpr Expected(std::in_place_t, Args&&... args)
+        : impl_base{std::in_place, std::forward<Args>(args)...},
+          ctor_base{detail::default_constructor_tag{}} {}
+
+    template <typename U, typename... Args,
+              std::enable_if_t<std::is_constructible_v<T, std::initializer_list<U>&, Args&&...>>* =
+                  nullptr>
+    constexpr Expected(std::in_place_t, std::initializer_list<U> il, Args&&... args)
+        : impl_base{std::in_place, il, std::forward<Args>(args)...},
+          ctor_base{detail::default_constructor_tag{}} {}
+
+    template <typename G = E, std::enable_if_t<std::is_constructible_v<E, const G&>>* = nullptr,
+              std::enable_if_t<!std::is_convertible_v<const G&, E>>* = nullptr>
+    constexpr explicit Expected(const Unexpected<G>& e)
+        : impl_base{unexpect_t{}, e.value()}, ctor_base{detail::default_constructor_tag{}} {}
+
+    template <typename G = E, std::enable_if_t<std::is_constructible_v<E, const G&>>* = nullptr,
+              std::enable_if_t<std::is_convertible_v<const G&, E>>* = nullptr>
+    constexpr Expected(Unexpected<G> const& e)
+        : impl_base{unexpect_t{}, e.value()}, ctor_base{detail::default_constructor_tag{}} {}
+
+    template <typename G = E, std::enable_if_t<std::is_constructible_v<E, G&&>>* = nullptr,
+              std::enable_if_t<!std::is_convertible_v<G&&, E>>* = nullptr>
+    constexpr explicit Expected(Unexpected<G>&& e) noexcept(std::is_nothrow_constructible_v<E, G&&>)
+        : impl_base{unexpect_t{}, std::move(e.value())}, ctor_base{
+                                                             detail::default_constructor_tag{}} {}
+
+    template <typename G = E, std::enable_if_t<std::is_constructible_v<E, G&&>>* = nullptr,
+              std::enable_if_t<std::is_convertible_v<G&&, E>>* = nullptr>
+    constexpr Expected(Unexpected<G>&& e) noexcept(std::is_nothrow_constructible_v<E, G&&>)
+        : impl_base{unexpect_t{}, std::move(e.value())}, ctor_base{
+                                                             detail::default_constructor_tag{}} {}
+
+    template <typename... Args, std::enable_if_t<std::is_constructible_v<E, Args&&...>>* = nullptr>
+    constexpr explicit Expected(unexpect_t, Args&&... args)
+        : impl_base{unexpect_t{}, std::forward<Args>(args)...},
+          ctor_base{detail::default_constructor_tag{}} {}
+
+    template <typename U, typename... Args,
+              std::enable_if_t<std::is_constructible_v<E, std::initializer_list<U>&, Args&&...>>* =
+                  nullptr>
+    constexpr explicit Expected(unexpect_t, std::initializer_list<U> il, Args&&... args)
+        : impl_base{unexpect_t{}, il, std::forward<Args>(args)...},
+          ctor_base{detail::default_constructor_tag{}} {}
+
+    template <typename U, typename G,
+              std::enable_if_t<!(std::is_convertible_v<U const&, T> &&
+                                 std::is_convertible_v<G const&, E>)>* = nullptr,
+              detail::expected_enable_from_other<T, E, U, G, const U&, const G&>* = nullptr>
+    constexpr explicit Expected(const Expected<U, G>& rhs)
+        : ctor_base{detail::default_constructor_tag{}} {
+        if (rhs.has_value()) {
+            this->construct(*rhs);
+        } else {
+            this->construct_error(rhs.error());
+        }
+    }
+
+    template <typename U, typename G,
+              std::enable_if_t<(std::is_convertible_v<U const&, T> &&
+                                std::is_convertible_v<G const&, E>)>* = nullptr,
+              detail::expected_enable_from_other<T, E, U, G, const U&, const G&>* = nullptr>
+    constexpr Expected(const Expected<U, G>& rhs) : ctor_base{detail::default_constructor_tag{}} {
+        if (rhs.has_value()) {
+            this->construct(*rhs);
+        } else {
+            this->construct_error(rhs.error());
+        }
+    }
+
+    template <typename U, typename G,
+              std::enable_if_t<!(std::is_convertible_v<U&&, T> && std::is_convertible_v<G&&, E>)>* =
+                  nullptr,
+              detail::expected_enable_from_other<T, E, U, G, U&&, G&&>* = nullptr>
+    constexpr explicit Expected(Expected<U, G>&& rhs)
+        : ctor_base{detail::default_constructor_tag{}} {
+        if (rhs.has_value()) {
+            this->construct(std::move(*rhs));
+        } else {
+            this->construct_error(std::move(rhs.error()));
+        }
+    }
+
+    template <typename U, typename G,
+              std::enable_if_t<(std::is_convertible_v<U&&, T> && std::is_convertible_v<G&&, E>)>* =
+                  nullptr,
+              detail::expected_enable_from_other<T, E, U, G, U&&, G&&>* = nullptr>
+    constexpr Expected(Expected<U, G>&& rhs) : ctor_base{detail::default_constructor_tag{}} {
+        if (rhs.has_value()) {
+            this->construct(std::move(*rhs));
+        } else {
+            this->construct_error(std::move(rhs.error()));
+        }
+    }
+
+    template <typename U = T, std::enable_if_t<!std::is_convertible_v<U&&, T>>* = nullptr,
+              detail::expected_enable_forward_value<T, E, U>* = nullptr>
+    constexpr explicit Expected(U&& v) : Expected{std::in_place, std::forward<U>(v)} {}
+
+    template <typename U = T, std::enable_if_t<std::is_convertible_v<U&&, T>>* = nullptr,
+              detail::expected_enable_forward_value<T, E, U>* = nullptr>
+    constexpr Expected(U&& v) : Expected{std::in_place, std::forward<U>(v)} {}
+
+    template <typename U = T, typename G = T,
+              std::enable_if_t<std::is_nothrow_constructible_v<T, U&&>>* = nullptr,
+              std::enable_if_t<(
+                  !std::is_same_v<Expected<T, E>, std::remove_cvref_t<U>> &&
+                  !std::conjunction_v<std::is_scalar<T>, std::is_same<T, std::remove_cvref_t<U>>> &&
+                  std::is_constructible_v<T, U> && std::is_assignable_v<G&, U> &&
+                  std::is_nothrow_move_constructible_v<E>)>* = nullptr>
+    Expected& operator=(U&& v) {
+        if (has_value()) {
+            val() = std::forward<U>(v);
+        } else {
+            err().~Unexpected<E>();
+            new (valptr()) T{std::forward<U>(v)};
+            this->m_has_val = true;
+        }
+
+        return *this;
+    }
+
+    template <typename U = T, typename G = T,
+              std::enable_if_t<!std::is_nothrow_constructible_v<T, U&&>>* = nullptr,
+              std::enable_if_t<(
+                  !std::is_same_v<Expected<T, E>, std::remove_cvref_t<U>> &&
+                  !std::conjunction_v<std::is_scalar<T>, std::is_same<T, std::remove_cvref_t<U>>> &&
+                  std::is_constructible_v<T, U> && std::is_assignable_v<G&, U> &&
+                  std::is_nothrow_move_constructible_v<E>)>* = nullptr>
+    Expected& operator=(U&& v) {
+        if (has_value()) {
+            val() = std::forward<U>(v);
+        } else {
+            auto tmp = std::move(err());
+            err().~Unexpected<E>();
+            new (valptr()) T{std::forward<U>(v)};
+            this->m_has_val = true;
+        }
+
+        return *this;
+    }
+
+    template <typename G = E, std::enable_if_t<std::is_nothrow_copy_constructible_v<G> &&
+                                               std::is_assignable_v<G&, G>>* = nullptr>
+    Expected& operator=(const Unexpected<G>& rhs) {
+        if (!has_value()) {
+            err() = rhs;
+        } else {
+            this->destroy_val();
+            new (errptr()) Unexpected<E>{rhs};
+            this->m_has_val = false;
+        }
+
+        return *this;
+    }
+
+    template <typename G = E, std::enable_if_t<std::is_nothrow_move_constructible_v<G> &&
+                                               std::is_move_assignable_v<G>>* = nullptr>
+    Expected& operator=(Unexpected<G>&& rhs) noexcept {
+        if (!has_value()) {
+            err() = std::move(rhs);
+        } else {
+            this->destroy_val();
+            new (errptr()) Unexpected<E>{std::move(rhs)};
+            this->m_has_val = false;
+        }
+
+        return *this;
+    }
+
+    template <typename... Args,
+              std::enable_if_t<std::is_nothrow_constructible_v<T, Args&&...>>* = nullptr>
+    void emplace(Args&&... args) {
+        if (has_value()) {
+            val() = T{std::forward<Args>(args)...};
+        } else {
+            err().~Unexpected<E>();
+            new (valptr()) T{std::forward<Args>(args)...};
+            this->m_has_val = true;
+        }
+    }
+
+    template <typename... Args,
+              std::enable_if_t<!std::is_nothrow_constructible_v<T, Args&&...>>* = nullptr>
+    void emplace(Args&&... args) {
+        if (has_value()) {
+            val() = T{std::forward<Args>(args)...};
+        } else {
+            auto tmp = std::move(err());
+            err().~Unexpected<E>();
+            new (valptr()) T{std::forward<Args>(args)...};
+            this->m_has_val = true;
+        }
+    }
+
+    template <typename U, typename... Args,
+              std::enable_if_t<std::is_nothrow_constructible_v<T, std::initializer_list<U>&,
+                                                               Args&&...>>* = nullptr>
+    void emplace(std::initializer_list<U> il, Args&&... args) {
+        if (has_value()) {
+            T t{il, std::forward<Args>(args)...};
+            val() = std::move(t);
+        } else {
+            err().~Unexpected<E>();
+            new (valptr()) T{il, std::forward<Args>(args)...};
+            this->m_has_val = true;
+        }
+    }
+
+    template <typename U, typename... Args,
+              std::enable_if_t<!std::is_nothrow_constructible_v<T, std::initializer_list<U>&,
+                                                                Args&&...>>* = nullptr>
+    void emplace(std::initializer_list<U> il, Args&&... args) {
+        if (has_value()) {
+            T t{il, std::forward<Args>(args)...};
+            val() = std::move(t);
+        } else {
+            auto tmp = std::move(err());
+            err().~Unexpected<E>();
+            new (valptr()) T{il, std::forward<Args>(args)...};
+            this->m_has_val = true;
+        }
+    }
+
+    constexpr T* operator->() {
+        return valptr();
+    }
+
+    constexpr const T* operator->() const {
+        return valptr();
+    }
+
+    template <typename U = T>
+    constexpr U& operator*() & {
+        return val();
+    }
+
+    template <typename U = T>
+    constexpr const U& operator*() const& {
+        return val();
+    }
+
+    template <typename U = T>
+    constexpr U&& operator*() && {
+        return std::move(val());
+    }
+
+    template <typename U = T>
+    constexpr const U&& operator*() const&& {
+        return std::move(val());
+    }
+
+    constexpr bool has_value() const noexcept {
+        return this->m_has_val;
+    }
+
+    constexpr explicit operator bool() const noexcept {
+        return this->m_has_val;
+    }
+
+    template <typename U = T>
+    constexpr U& value() & {
+        return val();
+    }
+
+    template <typename U = T>
+    constexpr const U& value() const& {
+        return val();
+    }
+
+    template <typename U = T>
+    constexpr U&& value() && {
+        return std::move(val());
+    }
+
+    template <typename U = T>
+    constexpr const U&& value() const&& {
+        return std::move(val());
+    }
+
+    constexpr E& error() & {
+        return err().value();
+    }
+
+    constexpr const E& error() const& {
+        return err().value();
+    }
+
+    constexpr E&& error() && {
+        return std::move(err().value());
+    }
+
+    constexpr const E&& error() const&& {
+        return std::move(err().value());
+    }
+
+    template <typename U>
+    constexpr T value_or(U&& v) const& {
+        static_assert(std::is_copy_constructible_v<T> && std::is_convertible_v<U&&, T>,
+                      "T must be copy-constructible and convertible from U&&");
+        return bool(*this) ? **this : static_cast<T>(std::forward<U>(v));
+    }
+
+    template <typename U>
+    constexpr T value_or(U&& v) && {
+        static_assert(std::is_move_constructible_v<T> && std::is_convertible_v<U&&, T>,
+                      "T must be move-constructible and convertible from U&&");
+        return bool(*this) ? std::move(**this) : static_cast<T>(std::forward<U>(v));
+    }
+
+private:
+    static_assert(!std::is_reference_v<T>, "T must not be a reference");
+    static_assert(!std::is_same_v<T, std::remove_cv_t<std::in_place_t>>,
+                  "T must not be std::in_place_t");
+    static_assert(!std::is_same_v<T, std::remove_cv_t<unexpect_t>>, "T must not be unexpect_t");
+    static_assert(!std::is_same_v<T, std::remove_cv_t<Unexpected<E>>>,
+                  "T must not be Unexpected<E>");
+    static_assert(!std::is_reference_v<E>, "E must not be a reference");
+
+    T* valptr() {
+        return std::addressof(this->m_val);
+    }
+
+    const T* valptr() const {
+        return std::addressof(this->m_val);
+    }
+
+    Unexpected<E>* errptr() {
+        return std::addressof(this->m_unexpect);
+    }
+
+    const Unexpected<E>* errptr() const {
+        return std::addressof(this->m_unexpect);
+    }
+
+    template <typename U = T>
+    constexpr U& val() {
+        return this->m_val;
+    }
+
+    template <typename U = T>
+    constexpr const U& val() const {
+        return this->m_val;
+    }
+
+    constexpr Unexpected<E>& err() {
+        return this->m_unexpect;
+    }
+
+    constexpr const Unexpected<E>& err() const {
+        return this->m_unexpect;
+    }
+
+    using impl_base = detail::expected_move_assign_base<T, E>;
+    using ctor_base = detail::expected_default_ctor_base<T, E>;
+};
+
+template <typename T, typename E, typename U, typename F>
+constexpr bool operator==(const Expected<T, E>& lhs, const Expected<U, F>& rhs) {
+    return (lhs.has_value() != rhs.has_value())
+               ? false
+               : (!lhs.has_value() ? lhs.error() == rhs.error() : *lhs == *rhs);
+}
+
+template <typename T, typename E, typename U, typename F>
+constexpr bool operator!=(const Expected<T, E>& lhs, const Expected<U, F>& rhs) {
+    return !operator==(lhs, rhs);
+}
+
+template <typename T, typename E, typename U>
+constexpr bool operator==(const Expected<T, E>& x, const U& v) {
+    return x.has_value() ? *x == v : false;
+}
+
+template <typename T, typename E, typename U>
+constexpr bool operator==(const U& v, const Expected<T, E>& x) {
+    return x.has_value() ? *x == v : false;
+}
+
+template <typename T, typename E, typename U>
+constexpr bool operator!=(const Expected<T, E>& x, const U& v) {
+    return !operator==(x, v);
+}
+
+template <typename T, typename E, typename U>
+constexpr bool operator!=(const U& v, const Expected<T, E>& x) {
+    return !operator==(v, x);
+}
+
+template <typename T, typename E>
+constexpr bool operator==(const Expected<T, E>& x, const Unexpected<E>& e) {
+    return x.has_value() ? false : x.error() == e.value();
+}
+
+template <typename T, typename E>
+constexpr bool operator==(const Unexpected<E>& e, const Expected<T, E>& x) {
+    return x.has_value() ? false : x.error() == e.value();
+}
+
+template <typename T, typename E>
+constexpr bool operator!=(const Expected<T, E>& x, const Unexpected<E>& e) {
+    return !operator==(x, e);
+}
+
+template <typename T, typename E>
+constexpr bool operator!=(const Unexpected<E>& e, const Expected<T, E>& x) {
+    return !operator==(e, x);
+}
+
+} // namespace Common

src/common/logging/backend.cpp

@@ -6,7 +6,6 @@
 #include <chrono>
 #include <climits>
 #include <exception>
-#include <stop_token>
 #include <thread>
 #include <vector>
 
@@ -187,10 +186,6 @@ public:
         initialization_in_progress_suppress_logging = false;
     }
 
-    static void Start() {
-        instance->StartBackendThread();
-    }
-
     Impl(const Impl&) = delete;
     Impl& operator=(const Impl&) = delete;
 
@@ -206,7 +201,7 @@ public:
     }
 
     void PushEntry(Class log_class, Level log_level, const char* filename, unsigned int line_num,
-                   const char* function, std::string&& message) {
+                   const char* function, std::string message) {
         if (!filter.CheckMessage(log_class, log_level))
             return;
         const Entry& entry =
@@ -216,41 +211,40 @@ public:
 
 private:
     Impl(const std::filesystem::path& file_backend_filename, const Filter& filter_)
-        : filter{filter_}, file_backend{file_backend_filename} {}
+        : filter{filter_}, file_backend{file_backend_filename}, backend_thread{std::thread([this] {
+              Common::SetCurrentThreadName("yuzu:Log");
+              Entry entry;
+              const auto write_logs = [this, &entry]() {
+                  ForEachBackend([&entry](Backend& backend) { backend.Write(entry); });
+              };
+              while (true) {
+                  entry = message_queue.PopWait();
+                  if (entry.final_entry) {
+                      break;
+                  }
+                  write_logs();
+              }
+              // Drain the logging queue. Only writes out up to MAX_LOGS_TO_WRITE to prevent a
+              // case where a system is repeatedly spamming logs even on close.
+              int max_logs_to_write = filter.IsDebug() ? INT_MAX : 100;
+              while (max_logs_to_write-- && message_queue.Pop(entry)) {
+                  write_logs();
+              }
+          })} {}
 
     ~Impl() {
         StopBackendThread();
     }
 
-    void StartBackendThread() {
-        backend_thread = std::thread([this] {
-            Common::SetCurrentThreadName("yuzu:Log");
-            Entry entry;
-            const auto write_logs = [this, &entry]() {
-                ForEachBackend([&entry](Backend& backend) { backend.Write(entry); });
-            };
-            while (!stop.stop_requested()) {
-                entry = message_queue.PopWait(stop.get_token());
-                if (entry.filename != nullptr) {
-                    write_logs();
-                }
-            }
-            // Drain the logging queue. Only writes out up to MAX_LOGS_TO_WRITE to prevent a
-            // case where a system is repeatedly spamming logs even on close.
-            int max_logs_to_write = filter.IsDebug() ? INT_MAX : 100;
-            while (max_logs_to_write-- && message_queue.Pop(entry)) {
-                write_logs();
-            }
-        });
-    }
-
     void StopBackendThread() {
-        stop.request_stop();
+        Entry stop_entry{};
+        stop_entry.final_entry = true;
+        message_queue.Push(stop_entry);
         backend_thread.join();
     }
 
     Entry CreateEntry(Class log_class, Level log_level, const char* filename, unsigned int line_nr,
-                      const char* function, std::string&& message) const {
+                      const char* function, std::string message) const {
         using std::chrono::duration_cast;
         using std::chrono::microseconds;
         using std::chrono::steady_clock;
@@ -263,6 +257,7 @@ private:
             .line_num = line_nr,
             .function = function,
             .message = std::move(message),
+            .final_entry = false,
         };
     }
 
@@ -283,9 +278,8 @@ private:
     ColorConsoleBackend color_console_backend{};
     FileBackend file_backend;
 
-    std::stop_source stop;
     std::thread backend_thread;
-    MPSCQueue<Entry, true> message_queue{};
+    MPSCQueue<Entry> message_queue{};
     std::chrono::steady_clock::time_point time_origin{std::chrono::steady_clock::now()};
 };
 } // namespace
@@ -294,10 +288,6 @@ void Initialize() {
     Impl::Initialize();
 }
 
-void Start() {
-    Impl::Start();
-}
-
 void DisableLoggingInTests() {
     initialization_in_progress_suppress_logging = true;
 }

src/common/logging/backend.h

@@ -14,8 +14,6 @@ class Filter;
 /// Initializes the logging system. This should be the first thing called in main.
 void Initialize();
 
-void Start();
-
 void DisableLoggingInTests();
 
 /**

src/common/logging/log_entry.h

@@ -22,6 +22,7 @@ struct Entry {
     unsigned int line_num = 0;
     std::string function;
     std::string message;
+    bool final_entry = false;
 };
 
 } // namespace Common::Log

src/core/core.cpp

@@ -83,12 +83,6 @@ FileSys::StorageId GetStorageIdForFrontendSlot(
     }
 }
 
-void KProcessDeleter(Kernel::KProcess* process) {
-    process->Destroy();
-}
-
-using KProcessPtr = std::unique_ptr<Kernel::KProcess, decltype(&KProcessDeleter)>;
-
 } // Anonymous namespace
 
 FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
@@ -261,11 +255,10 @@ struct System::Impl {
         }
 
         telemetry_session->AddInitialInfo(*app_loader, fs_controller, *content_provider);
-        main_process = KProcessPtr{Kernel::KProcess::Create(system.Kernel()), KProcessDeleter};
-        ASSERT(Kernel::KProcess::Initialize(main_process.get(), system, "main",
+        auto main_process = Kernel::KProcess::Create(system.Kernel());
+        ASSERT(Kernel::KProcess::Initialize(main_process, system, "main",
                                             Kernel::KProcess::ProcessType::Userland)
                    .IsSuccess());
-        main_process->Open();
         const auto [load_result, load_parameters] = app_loader->Load(*main_process, system);
         if (load_result != Loader::ResultStatus::Success) {
             LOG_CRITICAL(Core, "Failed to load ROM (Error {})!", load_result);
@@ -275,7 +268,7 @@ struct System::Impl {
                 static_cast<u32>(SystemResultStatus::ErrorLoader) + static_cast<u32>(load_result));
         }
         AddGlueRegistrationForProcess(*app_loader, *main_process);
-        kernel.MakeCurrentProcess(main_process.get());
+        kernel.MakeCurrentProcess(main_process);
         kernel.InitializeCores();
 
         // Initialize cheat engine
@@ -340,8 +333,6 @@ struct System::Impl {
         kernel.Shutdown();
         memory.Reset();
         applet_manager.ClearAll();
-        // TODO: The main process should be freed based on KAutoObject ref counting.
-        main_process.reset();
 
         LOG_DEBUG(Core, "Shutdown OK");
     }
@@ -403,7 +394,6 @@ struct System::Impl {
     std::unique_ptr<Tegra::GPU> gpu_core;
     std::unique_ptr<Hardware::InterruptManager> interrupt_manager;
     std::unique_ptr<Core::DeviceMemory> device_memory;
-    KProcessPtr main_process{nullptr, KProcessDeleter};
     Core::Memory::Memory memory;
     CpuManager cpu_manager;
     std::atomic_bool is_powered_on{};

src/core/file_sys/romfs_factory.cpp

@@ -39,13 +39,12 @@ void RomFSFactory::SetPackedUpdate(VirtualFile update_raw_file) {
 
 ResultVal<VirtualFile> RomFSFactory::OpenCurrentProcess(u64 current_process_title_id) const {
     if (!updatable) {
-        return MakeResult<VirtualFile>(file);
+        return file;
     }
 
     const PatchManager patch_manager{current_process_title_id, filesystem_controller,
                                      content_provider};
-    return MakeResult<VirtualFile>(
-        patch_manager.PatchRomFS(file, ivfc_offset, ContentRecordType::Program, update_raw));
+    return patch_manager.PatchRomFS(file, ivfc_offset, ContentRecordType::Program, update_raw);
 }
 
 ResultVal<VirtualFile> RomFSFactory::OpenPatchedRomFS(u64 title_id, ContentRecordType type) const {
@@ -58,8 +57,7 @@ ResultVal<VirtualFile> RomFSFactory::OpenPatchedRomFS(u64 title_id, ContentRecor
 
     const PatchManager patch_manager{title_id, filesystem_controller, content_provider};
 
-    return MakeResult<VirtualFile>(
-        patch_manager.PatchRomFS(nca->GetRomFS(), nca->GetBaseIVFCOffset(), type));
+    return patch_manager.PatchRomFS(nca->GetRomFS(), nca->GetBaseIVFCOffset(), type);
 }
 
 ResultVal<VirtualFile> RomFSFactory::OpenPatchedRomFSWithProgramIndex(
@@ -83,7 +81,7 @@ ResultVal<VirtualFile> RomFSFactory::Open(u64 title_id, StorageId storage,
         return ResultUnknown;
     }
 
-    return MakeResult<VirtualFile>(romfs);
+    return romfs;
 }
 
 std::shared_ptr<NCA> RomFSFactory::GetEntry(u64 title_id, StorageId storage,

src/core/file_sys/savedata_factory.cpp

@@ -94,7 +94,7 @@ ResultVal<VirtualDir> SaveDataFactory::Create(SaveDataSpaceId space,
         return ResultUnknown;
     }
 
-    return MakeResult<VirtualDir>(std::move(out));
+    return out;
 }
 
 ResultVal<VirtualDir> SaveDataFactory::Open(SaveDataSpaceId space,
@@ -115,7 +115,7 @@ ResultVal<VirtualDir> SaveDataFactory::Open(SaveDataSpaceId space,
         return ResultUnknown;
     }
 
-    return MakeResult<VirtualDir>(std::move(out));
+    return out;
 }
 
 VirtualDir SaveDataFactory::GetSaveDataSpaceDirectory(SaveDataSpaceId space) const {

src/core/file_sys/sdmc_factory.cpp

@@ -25,7 +25,7 @@ SDMCFactory::SDMCFactory(VirtualDir sd_dir_, VirtualDir sd_mod_dir_)
 SDMCFactory::~SDMCFactory() = default;
 
 ResultVal<VirtualDir> SDMCFactory::Open() const {
-    return MakeResult<VirtualDir>(sd_dir);
+    return sd_dir;
 }
 
 VirtualDir SDMCFactory::GetSDMCModificationLoadRoot(u64 title_id) const {

src/core/hle/kernel/k_handle_table.cpp

@@ -56,6 +56,7 @@ bool KHandleTable::Remove(Handle handle) {
     }
 
     // Close the object.
+    kernel.UnregisterInUseObject(obj);
     obj->Close();
     return true;
 }

src/core/hle/kernel/k_page_table.cpp

@@ -859,7 +859,7 @@ ResultVal<VAddr> KPageTable::SetHeapSize(std::size_t size) {
         current_heap_addr = heap_region_start + size;
     }
 
-    return MakeResult<VAddr>(heap_region_start);
+    return heap_region_start;
 }
 
 ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,
@@ -893,7 +893,7 @@ ResultVal<VAddr> KPageTable::AllocateAndMapMemory(std::size_t needed_num_pages,
 
     block_manager->Update(addr, needed_num_pages, state, perm);
 
-    return MakeResult<VAddr>(addr);
+    return addr;
 }
 
 ResultCode KPageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {

src/core/hle/kernel/k_process.cpp

@@ -434,11 +434,6 @@ void KProcess::PrepareForTermination() {
 }
 
 void KProcess::Finalize() {
-    // Release memory to the resource limit.
-    if (resource_limit != nullptr) {
-        resource_limit->Close();
-    }
-
     // Finalize the handle table and close any open handles.
     handle_table.Finalize();
 
@@ -460,6 +455,12 @@ void KProcess::Finalize() {
         }
     }
 
+    // Release memory to the resource limit.
+    if (resource_limit != nullptr) {
+        resource_limit->Close();
+        resource_limit = nullptr;
+    }
+
     // Perform inherited finalization.
     KAutoObjectWithSlabHeapAndContainer<KProcess, KSynchronizationObject>::Finalize();
 }

src/core/hle/kernel/kernel.cpp

@@ -91,12 +91,6 @@ struct KernelCore::Impl {
     }
 
     void Shutdown() {
-        // Shutdown all processes.
-        if (current_process) {
-            current_process->Finalize();
-            current_process->Close();
-            current_process = nullptr;
-        }
         process_list.clear();
 
         // Close all open server ports.
@@ -170,6 +164,24 @@ struct KernelCore::Impl {
         // Next host thead ID to use, 0-3 IDs represent core threads, >3 represent others
         next_host_thread_id = Core::Hardware::NUM_CPU_CORES;
 
+        // Close kernel objects that were not freed on shutdown
+        {
+            std::lock_guard lk(registered_in_use_objects_lock);
+            if (registered_in_use_objects.size()) {
+                for (auto& object : registered_in_use_objects) {
+                    object->Close();
+                }
+                registered_in_use_objects.clear();
+            }
+        }
+
+        // Shutdown all processes.
+        if (current_process) {
+            current_process->Finalize();
+            current_process->Close();
+            current_process = nullptr;
+        }
+
         // Track kernel objects that were not freed on shutdown
         {
             std::lock_guard lk(registered_objects_lock);
@@ -714,9 +726,11 @@ struct KernelCore::Impl {
     std::unordered_set<KServerPort*> server_ports;
     std::unordered_set<KServerSession*> server_sessions;
     std::unordered_set<KAutoObject*> registered_objects;
+    std::unordered_set<KAutoObject*> registered_in_use_objects;
     std::mutex server_ports_lock;
     std::mutex server_sessions_lock;
     std::mutex registered_objects_lock;
+    std::mutex registered_in_use_objects_lock;
 
     std::unique_ptr<Core::ExclusiveMonitor> exclusive_monitor;
     std::vector<Kernel::PhysicalCore> cores;
@@ -928,6 +942,16 @@ void KernelCore::UnregisterKernelObject(KAutoObject* object) {
     impl->registered_objects.erase(object);
 }
 
+void KernelCore::RegisterInUseObject(KAutoObject* object) {
+    std::lock_guard lk(impl->registered_in_use_objects_lock);
+    impl->registered_in_use_objects.insert(object);
+}
+
+void KernelCore::UnregisterInUseObject(KAutoObject* object) {
+    std::lock_guard lk(impl->registered_in_use_objects_lock);
+    impl->registered_in_use_objects.erase(object);
+}
+
 bool KernelCore::IsValidNamedPort(NamedPortTable::const_iterator port) const {
     return port != impl->named_ports.cend();
 }

src/core/hle/kernel/kernel.h

@@ -204,6 +204,14 @@ public:
     /// destroyed during the current emulation session.
     void UnregisterKernelObject(KAutoObject* object);
 
+    /// Registers kernel objects with guest in use state, this is purely for close
+    /// after emulation has been shutdown.
+    void RegisterInUseObject(KAutoObject* object);
+
+    /// Unregisters a kernel object previously registered with RegisterInUseObject when it was
+    /// destroyed during the current emulation session.
+    void UnregisterInUseObject(KAutoObject* object);
+
     /// Determines whether or not the given port is a valid named port.
     bool IsValidNamedPort(NamedPortTable::const_iterator port) const;
 

src/core/hle/kernel/svc.cpp

@@ -409,7 +409,7 @@ static ResultCode GetProcessId32(Core::System& system, u32* out_process_id_low,
 
 /// Wait for the given handles to synchronize, timeout after the specified nanoseconds
 static ResultCode WaitSynchronization(Core::System& system, s32* index, VAddr handles_address,
-                                      u64 num_handles, s64 nano_seconds) {
+                                      s32 num_handles, s64 nano_seconds) {
     LOG_TRACE(Kernel_SVC, "called handles_address=0x{:X}, num_handles={}, nano_seconds={}",
               handles_address, num_handles, nano_seconds);
 
@@ -427,11 +427,15 @@ static ResultCode WaitSynchronization(Core::System& system, s32* index, VAddr ha
         R_UNLESS(handle_table.GetMultipleObjects<KSynchronizationObject>(objs.data(), handles,
                                                                          num_handles),
                  ResultInvalidHandle);
+        for (const auto& obj : objs) {
+            kernel.RegisterInUseObject(obj);
+        }
     }
 
     // Ensure handles are closed when we're done.
     SCOPE_EXIT({
-        for (u64 i = 0; i < num_handles; ++i) {
+        for (s32 i = 0; i < num_handles; ++i) {
+            kernel.UnregisterInUseObject(objs[i]);
             objs[i]->Close();
         }
     });
@@ -1561,6 +1565,7 @@ static ResultCode StartThread(Core::System& system, Handle thread_handle) {
 
     // If we succeeded, persist a reference to the thread.
     thread->Open();
+    system.Kernel().RegisterInUseObject(thread.GetPointerUnsafe());
 
     return ResultSuccess;
 }
@@ -1576,6 +1581,7 @@ static void ExitThread(Core::System& system) {
     auto* const current_thread = system.Kernel().CurrentScheduler()->GetCurrentThread();
     system.GlobalSchedulerContext().RemoveThread(current_thread);
     current_thread->Exit();
+    system.Kernel().UnregisterInUseObject(current_thread);
 }
 
 static void ExitThread32(Core::System& system) {

src/core/hle/kernel/svc_wrap.h

@@ -248,10 +248,10 @@ void SvcWrap64(Core::System& system) {
 }
 
 // Used by WaitSynchronization
-template <ResultCode func(Core::System&, s32*, u64, u64, s64)>
+template <ResultCode func(Core::System&, s32*, u64, s32, s64)>
 void SvcWrap64(Core::System& system) {
     s32 param_1 = 0;
-    const u32 retval = func(system, &param_1, Param(system, 1), static_cast<u32>(Param(system, 2)),
+    const u32 retval = func(system, &param_1, Param(system, 1), static_cast<s32>(Param(system, 2)),
                             static_cast<s64>(Param(system, 3)))
                            .raw;
 

src/core/hle/result.h

@@ -4,11 +4,10 @@
 
 #pragma once
 
-#include <new>
-#include <utility>
 #include "common/assert.h"
 #include "common/bit_field.h"
 #include "common/common_types.h"
+#include "common/expected.h"
 
 // All the constants in this file come from http://switchbrew.org/index.php?title=Error_codes
 
@@ -155,204 +154,131 @@ constexpr ResultCode ResultSuccess(0);
 constexpr ResultCode ResultUnknown(UINT32_MAX);
 
 /**
- * This is an optional value type. It holds a `ResultCode` and, if that code is a success code,
- * also holds a result of type `T`. If the code is an error code then trying to access the inner
- * value fails, thus ensuring that the ResultCode of functions is always checked properly before
- * their return value is used.  It is similar in concept to the `std::optional` type
- * (http://en.cppreference.com/w/cpp/experimental/optional) originally proposed for inclusion in
- * C++14, or the `Result` type in Rust (http://doc.rust-lang.org/std/result/index.html).
+ * This is an optional value type. It holds a `ResultCode` and, if that code is ResultSuccess, it
+ * also holds a result of type `T`. If the code is an error code (not ResultSuccess), then trying
+ * to access the inner value with operator* is undefined behavior and will assert with Unwrap().
+ * Users of this class must be cognizant to check the status of the ResultVal with operator bool(),
+ * Code(), Succeeded() or Failed() prior to accessing the inner value.
  *
  * An example of how it could be used:
  * \code
  * ResultVal<int> Frobnicate(float strength) {
  *     if (strength < 0.f || strength > 1.0f) {
  *         // Can't frobnicate too weakly or too strongly
- *         return ResultCode(ErrorDescription::OutOfRange, ErrorModule::Common,
- *             ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
+ *         return ResultCode{ErrorModule::Common, 1};
  *     } else {
  *         // Frobnicated! Give caller a cookie
- *         return MakeResult<int>(42);
+ *         return 42;
  *     }
  * }
  * \endcode
  *
  * \code
- * ResultVal<int> frob_result = Frobnicate(0.75f);
+ * auto frob_result = Frobnicate(0.75f);
  * if (frob_result) {
  *     // Frobbed ok
  *     printf("My cookie is %d\n", *frob_result);
  * } else {
- *     printf("Guess I overdid it. :( Error code: %ux\n", frob_result.code().hex);
+ *     printf("Guess I overdid it. :( Error code: %ux\n", frob_result.Code().raw);
  * }
  * \endcode
  */
 template <typename T>
 class ResultVal {
 public:
-    /// Constructs an empty `ResultVal` with the given error code. The code must not be a success
-    /// code.
-    ResultVal(ResultCode error_code = ResultUnknown) : result_code(error_code) {
-        ASSERT(error_code.IsError());
-    }
+    constexpr ResultVal() : expected{} {}
 
-    /**
-     * Similar to the non-member function `MakeResult`, with the exception that you can manually
-     * specify the success code. `success_code` must not be an error code.
-     */
-    template <typename... Args>
-    [[nodiscard]] static ResultVal WithCode(ResultCode success_code, Args&&... args) {
-        ResultVal<T> result;
-        result.emplace(success_code, std::forward<Args>(args)...);
-        return result;
-    }
+    constexpr ResultVal(ResultCode code) : expected{Common::Unexpected(code)} {}
 
-    ResultVal(const ResultVal& o) noexcept : result_code(o.result_code) {
-        if (!o.empty()) {
-            new (&object) T(o.object);
-        }
-    }
-
-    ResultVal(ResultVal&& o) noexcept : result_code(o.result_code) {
-        if (!o.empty()) {
-            new (&object) T(std::move(o.object));
-        }
-    }
-
-    ~ResultVal() {
-        if (!empty()) {
-            object.~T();
-        }
-    }
-
-    ResultVal& operator=(const ResultVal& o) noexcept {
-        if (this == &o) {
-            return *this;
-        }
-        if (!empty()) {
-            if (!o.empty()) {
-                object = o.object;
-            } else {
-                object.~T();
-            }
-        } else {
-            if (!o.empty()) {
-                new (&object) T(o.object);
-            }
-        }
-        result_code = o.result_code;
-
-        return *this;
-    }
-
-    ResultVal& operator=(ResultVal&& o) noexcept {
-        if (this == &o) {
-            return *this;
-        }
-        if (!empty()) {
-            if (!o.empty()) {
-                object = std::move(o.object);
-            } else {
-                object.~T();
-            }
-        } else {
-            if (!o.empty()) {
-                new (&object) T(std::move(o.object));
-            }
-        }
-        result_code = o.result_code;
-
-        return *this;
-    }
-
-    /**
-     * Replaces the current result with a new constructed result value in-place. The code must not
-     * be an error code.
-     */
-    template <typename... Args>
-    void emplace(ResultCode success_code, Args&&... args) {
-        ASSERT(success_code.IsSuccess());
-        if (!empty()) {
-            object.~T();
-        }
-        new (&object) T(std::forward<Args>(args)...);
-        result_code = success_code;
-    }
-
-    /// Returns true if the `ResultVal` contains an error code and no value.
-    [[nodiscard]] bool empty() const {
-        return result_code.IsError();
-    }
-
-    /// Returns true if the `ResultVal` contains a return value.
-    [[nodiscard]] bool Succeeded() const {
-        return result_code.IsSuccess();
-    }
-    /// Returns true if the `ResultVal` contains an error code and no value.
-    [[nodiscard]] bool Failed() const {
-        return empty();
-    }
-
-    [[nodiscard]] ResultCode Code() const {
-        return result_code;
-    }
-
-    [[nodiscard]] const T& operator*() const {
-        return object;
-    }
-    [[nodiscard]] T& operator*() {
-        return object;
-    }
-    [[nodiscard]] const T* operator->() const {
-        return &object;
-    }
-    [[nodiscard]] T* operator->() {
-        return &object;
-    }
-
-    /// Returns the value contained in this `ResultVal`, or the supplied default if it is missing.
     template <typename U>
-    [[nodiscard]] T ValueOr(U&& value) const {
-        return !empty() ? object : std::move(value);
+    constexpr ResultVal(U&& val) : expected{std::forward<U>(val)} {}
+
+    template <typename... Args>
+    constexpr ResultVal(Args&&... args) : expected{std::in_place, std::forward<Args>(args)...} {}
+
+    ~ResultVal() = default;
+
+    constexpr ResultVal(const ResultVal&) = default;
+    constexpr ResultVal(ResultVal&&) = default;
+
+    ResultVal& operator=(const ResultVal&) = default;
+    ResultVal& operator=(ResultVal&&) = default;
+
+    [[nodiscard]] constexpr explicit operator bool() const noexcept {
+        return expected.has_value();
     }
 
-    /// Asserts that the result succeeded and returns a reference to it.
-    [[nodiscard]] T& Unwrap() & {
-        ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
-        return **this;
+    [[nodiscard]] constexpr ResultCode Code() const {
+        return expected.has_value() ? ResultSuccess : expected.error();
     }
 
-    [[nodiscard]] T&& Unwrap() && {
+    [[nodiscard]] constexpr bool Succeeded() const {
+        return expected.has_value();
+    }
+
+    [[nodiscard]] constexpr bool Failed() const {
+        return !expected.has_value();
+    }
+
+    [[nodiscard]] constexpr T* operator->() {
+        return std::addressof(expected.value());
+    }
+
+    [[nodiscard]] constexpr const T* operator->() const {
+        return std::addressof(expected.value());
+    }
+
+    [[nodiscard]] constexpr T& operator*() & {
+        return *expected;
+    }
+
+    [[nodiscard]] constexpr const T& operator*() const& {
+        return *expected;
+    }
+
+    [[nodiscard]] constexpr T&& operator*() && {
+        return *expected;
+    }
+
+    [[nodiscard]] constexpr const T&& operator*() const&& {
+        return *expected;
+    }
+
+    [[nodiscard]] constexpr T& Unwrap() & {
         ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
-        return std::move(**this);
+        return expected.value();
+    }
+
+    [[nodiscard]] constexpr const T& Unwrap() const& {
+        ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
+        return expected.value();
+    }
+
+    [[nodiscard]] constexpr T&& Unwrap() && {
+        ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
+        return std::move(expected.value());
+    }
+
+    [[nodiscard]] constexpr const T&& Unwrap() const&& {
+        ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
+        return std::move(expected.value());
+    }
+
+    template <typename U>
+    [[nodiscard]] constexpr T ValueOr(U&& v) const& {
+        return expected.value_or(v);
+    }
+
+    template <typename U>
+    [[nodiscard]] constexpr T ValueOr(U&& v) && {
+        return expected.value_or(v);
     }
 
 private:
-    // A union is used to allocate the storage for the value, while allowing us to construct and
-    // destruct it at will.
-    union {
-        T object;
-    };
-    ResultCode result_code;
+    // TODO: Replace this with std::expected once it is standardized in the STL.
+    Common::Expected<T, ResultCode> expected;
 };
 
-/**
- * This function is a helper used to construct `ResultVal`s. It receives the arguments to construct
- * `T` with and creates a success `ResultVal` contained the constructed value.
- */
-template <typename T, typename... Args>
-[[nodiscard]] ResultVal<T> MakeResult(Args&&... args) {
-    return ResultVal<T>::WithCode(ResultSuccess, std::forward<Args>(args)...);
-}
-
-/**
- * Deducible overload of MakeResult, allowing the template parameter to be ommited if you're just
- * copy or move constructing.
- */
-template <typename Arg>
-[[nodiscard]] ResultVal<std::remove_cvref_t<Arg>> MakeResult(Arg&& arg) {
-    return ResultVal<std::remove_cvref_t<Arg>>::WithCode(ResultSuccess, std::forward<Arg>(arg));
-}
-
 /**
  * Check for the success of `source` (which must evaluate to a ResultVal). If it succeeds, unwraps
  * the contained value and assigns it to `target`, which can be either an l-value expression or a

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

@@ -826,6 +826,13 @@ void Module::Interface::IsUserAccountSwitchLocked(Kernel::HLERequestContext& ctx
     rb.Push(is_locked);
 }
 
+void Module::Interface::InitializeApplicationInfoV2(Kernel::HLERequestContext& ctx) {
+    LOG_WARNING(Service_ACC, "(STUBBED) called");
+
+    IPC::ResponseBuilder rb{ctx, 2};
+    rb.Push(ResultSuccess);
+}
+
 void Module::Interface::GetProfileEditor(Kernel::HLERequestContext& ctx) {
     IPC::RequestParser rp{ctx};
     Common::UUID user_id = rp.PopRaw<Common::UUID>();

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

@@ -33,6 +33,7 @@ public:
         void IsUserRegistrationRequestPermitted(Kernel::HLERequestContext& ctx);
         void TrySelectUserWithoutInteraction(Kernel::HLERequestContext& ctx);
         void IsUserAccountSwitchLocked(Kernel::HLERequestContext& ctx);
+        void InitializeApplicationInfoV2(Kernel::HLERequestContext& ctx);
         void GetProfileEditor(Kernel::HLERequestContext& ctx);
         void ListQualifiedUsers(Kernel::HLERequestContext& ctx);
         void LoadOpenContext(Kernel::HLERequestContext& ctx);

src/core/hle/service/acc/acc_u0.cpp

@@ -34,6 +34,7 @@ ACC_U0::ACC_U0(std::shared_ptr<Module> module_, std::shared_ptr<ProfileManager>
         {140, &ACC_U0::InitializeApplicationInfoRestricted, "InitializeApplicationInfoRestricted"}, // 6.0.0+
         {141, &ACC_U0::ListQualifiedUsers, "ListQualifiedUsers"}, // 6.0.0+
         {150, &ACC_U0::IsUserAccountSwitchLocked, "IsUserAccountSwitchLocked"}, // 6.0.0+
+        {160, &ACC_U0::InitializeApplicationInfoV2, "InitializeApplicationInfoV2"},
     };
     // clang-format on
 

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

@@ -226,11 +226,10 @@ ResultVal<FileSys::VirtualFile> VfsDirectoryServiceWrapper::OpenFile(const std::
     }
 
     if (mode == FileSys::Mode::Append) {
-        return MakeResult<FileSys::VirtualFile>(
-            std::make_shared<FileSys::OffsetVfsFile>(file, 0, file->GetSize()));
+        return std::make_shared<FileSys::OffsetVfsFile>(file, 0, file->GetSize());
     }
 
-    return MakeResult<FileSys::VirtualFile>(file);
+    return file;
 }
 
 ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const std::string& path_) {
@@ -240,7 +239,7 @@ ResultVal<FileSys::VirtualDir> VfsDirectoryServiceWrapper::OpenDirectory(const s
         // TODO(DarkLordZach): Find a better error code for this
         return FileSys::ERROR_PATH_NOT_FOUND;
     }
-    return MakeResult(dir);
+    return dir;
 }
 
 ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
@@ -252,12 +251,12 @@ ResultVal<FileSys::EntryType> VfsDirectoryServiceWrapper::GetEntryType(
     auto filename = Common::FS::GetFilename(path);
     // TODO(Subv): Some games use the '/' path, find out what this means.
     if (filename.empty())
-        return MakeResult(FileSys::EntryType::Directory);
+        return FileSys::EntryType::Directory;
 
     if (dir->GetFile(filename) != nullptr)
-        return MakeResult(FileSys::EntryType::File);
+        return FileSys::EntryType::File;
     if (dir->GetSubdirectory(filename) != nullptr)
-        return MakeResult(FileSys::EntryType::Directory);
+        return FileSys::EntryType::Directory;
     return FileSys::ERROR_PATH_NOT_FOUND;
 }
 
@@ -270,7 +269,7 @@ ResultVal<FileSys::FileTimeStampRaw> VfsDirectoryServiceWrapper::GetFileTimeStam
     if (GetEntryType(path).Failed()) {
         return FileSys::ERROR_PATH_NOT_FOUND;
     }
-    return MakeResult(dir->GetFileTimeStamp(Common::FS::GetFilename(path)));
+    return dir->GetFileTimeStamp(Common::FS::GetFilename(path));
 }
 
 FileSystemController::FileSystemController(Core::System& system_) : system{system_} {}
@@ -395,7 +394,7 @@ ResultVal<FileSys::VirtualDir> FileSystemController::OpenSaveDataSpace(
         return FileSys::ERROR_ENTITY_NOT_FOUND;
     }
 
-    return MakeResult(save_data_factory->GetSaveDataSpaceDirectory(space));
+    return save_data_factory->GetSaveDataSpaceDirectory(space);
 }
 
 ResultVal<FileSys::VirtualDir> FileSystemController::OpenSDMC() const {
@@ -421,7 +420,7 @@ ResultVal<FileSys::VirtualDir> FileSystemController::OpenBISPartition(
         return FileSys::ERROR_INVALID_ARGUMENT;
     }
 
-    return MakeResult<FileSys::VirtualDir>(std::move(part));
+    return part;
 }
 
 ResultVal<FileSys::VirtualFile> FileSystemController::OpenBISPartitionStorage(
@@ -437,7 +436,7 @@ ResultVal<FileSys::VirtualFile> FileSystemController::OpenBISPartitionStorage(
         return FileSys::ERROR_INVALID_ARGUMENT;
     }
 
-    return MakeResult<FileSys::VirtualFile>(std::move(part));
+    return part;
 }
 
 u64 FileSystemController::GetFreeSpaceSize(FileSys::StorageId id) const {

src/core/hle/service/glue/glue_manager.cpp

@@ -26,7 +26,7 @@ ResultVal<ApplicationLaunchProperty> ARPManager::GetLaunchProperty(u64 title_id)
         return ERR_NOT_REGISTERED;
     }
 
-    return MakeResult<ApplicationLaunchProperty>(iter->second.launch);
+    return iter->second.launch;
 }
 
 ResultVal<std::vector<u8>> ARPManager::GetControlProperty(u64 title_id) const {
@@ -39,7 +39,7 @@ ResultVal<std::vector<u8>> ARPManager::GetControlProperty(u64 title_id) const {
         return ERR_NOT_REGISTERED;
     }
 
-    return MakeResult<std::vector<u8>>(iter->second.control);
+    return iter->second.control;
 }
 
 ResultCode ARPManager::Register(u64 title_id, ApplicationLaunchProperty launch,

src/core/hle/service/ldr/ldr.cpp

@@ -335,7 +335,7 @@ public:
             CASCADE_CODE(result);
 
             if (ValidateRegionForMap(page_table, addr, size)) {
-                return MakeResult<VAddr>(addr);
+                return addr;
             }
         }
 
@@ -371,7 +371,7 @@ public:
             }
 
             if (ValidateRegionForMap(page_table, addr, size)) {
-                return MakeResult<VAddr>(addr);
+                return addr;
             }
         }
 

src/core/hle/service/mii/mii_manager.cpp

@@ -443,14 +443,14 @@ ResultVal<std::vector<MiiInfoElement>> MiiManager::GetDefault(SourceFlag source_
     std::vector<MiiInfoElement> result;
 
     if ((source_flag & SourceFlag::Default) == SourceFlag::None) {
-        return MakeResult(std::move(result));
+        return result;
     }
 
     for (std::size_t index = BaseMiiCount; index < DefaultMiiCount; index++) {
         result.emplace_back(BuildDefault(index), Source::Default);
     }
 
-    return MakeResult(std::move(result));
+    return result;
 }
 
 ResultCode MiiManager::GetIndex([[maybe_unused]] const MiiInfo& info, u32& index) {

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

@@ -414,7 +414,7 @@ ResultVal<u8> IApplicationManagerInterface::GetApplicationDesiredLanguage(
     for (const auto lang : *priority_list) {
         const auto supported_flag = GetSupportedLanguageFlag(lang);
         if (supported_languages == 0 || (supported_languages & supported_flag) == supported_flag) {
-            return MakeResult(static_cast<u8>(lang));
+            return static_cast<u8>(lang);
         }
     }
 
@@ -448,7 +448,7 @@ ResultVal<u64> IApplicationManagerInterface::ConvertApplicationLanguageToLanguag
         return ERR_APPLICATION_LANGUAGE_NOT_FOUND;
     }
 
-    return MakeResult(static_cast<u64>(*language_code));
+    return static_cast<u64>(*language_code);
 }
 
 IApplicationVersionInterface::IApplicationVersionInterface(Core::System& system_)

src/core/hle/service/sm/sm.cpp

@@ -87,7 +87,7 @@ ResultVal<Kernel::KPort*> ServiceManager::GetServicePort(const std::string& name
     auto handler = it->second;
     port->GetServerPort().SetSessionHandler(std::move(handler));
 
-    return MakeResult(port);
+    return port;
 }
 
 /**
@@ -165,7 +165,7 @@ ResultVal<Kernel::KClientSession*> SM::GetServiceImpl(Kernel::HLERequestContext&
 
     LOG_DEBUG(Service_SM, "called service={} -> session={}", name, session->GetId());
 
-    return MakeResult(session);
+    return session;
 }
 
 void SM::RegisterService(Kernel::HLERequestContext& ctx) {

src/core/hle/service/spl/spl_module.cpp

@@ -120,40 +120,40 @@ ResultVal<u64> Module::Interface::GetConfigImpl(ConfigItem config_item) const {
         return ResultSecureMonitorNotImplemented;
     case ConfigItem::ExosphereApiVersion:
         // Get information about the current exosphere version.
-        return MakeResult((u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MAJOR} << 56) |
-                          (u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MINOR} << 48) |
-                          (u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MICRO} << 40) |
-                          (static_cast<u64>(HLE::ApiVersion::GetTargetFirmware())));
+        return (u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MAJOR} << 56) |
+               (u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MINOR} << 48) |
+               (u64{HLE::ApiVersion::ATMOSPHERE_RELEASE_VERSION_MICRO} << 40) |
+               (static_cast<u64>(HLE::ApiVersion::GetTargetFirmware()));
     case ConfigItem::ExosphereNeedsReboot:
         // We are executing, so we aren't in the process of rebooting.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExosphereNeedsShutdown:
         // We are executing, so we aren't in the process of shutting down.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExosphereGitCommitHash:
         // Get information about the current exosphere git commit hash.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExosphereHasRcmBugPatch:
         // Get information about whether this unit has the RCM bug patched.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExosphereBlankProdInfo:
         // Get whether this unit should simulate a "blanked" PRODINFO.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExosphereAllowCalWrites:
         // Get whether this unit should allow writing to the calibration partition.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExosphereEmummcType:
         // Get what kind of emummc this unit has active.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExospherePayloadAddress:
         // Gets the physical address of the reboot payload buffer, if one exists.
         return ResultSecureMonitorNotInitialized;
     case ConfigItem::ExosphereLogConfiguration:
         // Get the log configuration.
-        return MakeResult(u64{0});
+        return u64{0};
     case ConfigItem::ExosphereForceEnableUsb30:
         // Get whether usb 3.0 should be force-enabled.
-        return MakeResult(u64{0});
+        return u64{0};
     default:
         return ResultSecureMonitorInvalidArgument;
     }

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

@@ -1284,15 +1284,15 @@ private:
     static ResultVal<ConvertedScaleMode> ConvertScalingModeImpl(NintendoScaleMode mode) {
         switch (mode) {
         case NintendoScaleMode::None:
-            return MakeResult(ConvertedScaleMode::None);
+            return ConvertedScaleMode::None;
         case NintendoScaleMode::Freeze:
-            return MakeResult(ConvertedScaleMode::Freeze);
+            return ConvertedScaleMode::Freeze;
         case NintendoScaleMode::ScaleToWindow:
-            return MakeResult(ConvertedScaleMode::ScaleToWindow);
+            return ConvertedScaleMode::ScaleToWindow;
         case NintendoScaleMode::ScaleAndCrop:
-            return MakeResult(ConvertedScaleMode::ScaleAndCrop);
+            return ConvertedScaleMode::ScaleAndCrop;
         case NintendoScaleMode::PreserveAspectRatio:
-            return MakeResult(ConvertedScaleMode::PreserveAspectRatio);
+            return ConvertedScaleMode::PreserveAspectRatio;
         default:
             LOG_ERROR(Service_VI, "Invalid scaling mode specified, mode={}", mode);
             return ERR_OPERATION_FAILED;

src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp

@@ -18,7 +18,7 @@ namespace Shader::Backend::GLASM {
 #define NotImplemented() throw NotImplementedException("GLASM instruction {}", __LINE__)
 
 static void DefinePhi(EmitContext& ctx, IR::Inst& phi) {
-    switch (phi.Arg(0).Type()) {
+    switch (phi.Type()) {
     case IR::Type::U1:
     case IR::Type::U32:
     case IR::Type::F32:

src/shader_recompiler/backend/glsl/emit_glsl_special.cpp

@@ -68,7 +68,7 @@ void EmitPhi(EmitContext& ctx, IR::Inst& phi) {
     }
     if (!phi.Definition<Id>().is_valid) {
         // The phi node wasn't forward defined
-        ctx.var_alloc.PhiDefine(phi, phi.Arg(0).Type());
+        ctx.var_alloc.PhiDefine(phi, phi.Type());
     }
 }
 
@@ -80,7 +80,7 @@ void EmitReference(EmitContext& ctx, const IR::Value& value) {
 
 void EmitPhiMove(EmitContext& ctx, const IR::Value& phi_value, const IR::Value& value) {
     IR::Inst& phi{*phi_value.InstRecursive()};
-    const auto phi_type{phi.Arg(0).Type()};
+    const auto phi_type{phi.Type()};
     if (!phi.Definition<Id>().is_valid) {
         // The phi node wasn't forward defined
         ctx.var_alloc.PhiDefine(phi, phi_type);

src/shader_recompiler/frontend/ir/basic_block.h

@@ -152,6 +152,17 @@ public:
         return instructions.crend();
     }
 
+    // Set the order of the block, it can be set pre order, the user decides
+    void SetOrder(u32 new_order) {
+        order = new_order;
+    }
+
+    // Get the order of the block.
+    // The higher, the closer is the block to the end.
+    [[nodiscard]] u32 GetOrder() const {
+        return order;
+    }
+
 private:
     /// Memory pool for instruction list
     ObjectPool<Inst>* inst_pool;
@@ -171,6 +182,9 @@ private:
 
     /// Intrusively stored host definition of this block.
     u32 definition{};
+
+    /// Order of the block.
+    u32 order{};
 };
 
 using BlockList = std::vector<Block*>;

src/shader_recompiler/frontend/ir/microinstruction.cpp

@@ -6,6 +6,7 @@
 #include <memory>
 
 #include "shader_recompiler/exception.h"
+#include "shader_recompiler/frontend/ir/basic_block.h"
 #include "shader_recompiler/frontend/ir/type.h"
 #include "shader_recompiler/frontend/ir/value.h"
 
@@ -253,6 +254,10 @@ Inst* Inst::GetAssociatedPseudoOperation(IR::Opcode opcode) {
 }
 
 IR::Type Inst::Type() const {
+    if (op == IR::Opcode::Phi) {
+        // The type of a phi node is stored in its flags
+        return Flags<IR::Type>();
+    }
     return TypeOf(op);
 }
 
@@ -291,6 +296,16 @@ void Inst::AddPhiOperand(Block* predecessor, const Value& value) {
     phi_args.emplace_back(predecessor, value);
 }
 
+void Inst::OrderPhiArgs() {
+    if (op != Opcode::Phi) {
+        throw LogicError("{} is not a Phi instruction", op);
+    }
+    std::sort(phi_args.begin(), phi_args.end(),
+              [](const std::pair<Block*, Value>& a, const std::pair<Block*, Value>& b) {
+                  return a.first->GetOrder() < b.first->GetOrder();
+              });
+}
+
 void Inst::Invalidate() {
     ClearArgs();
     ReplaceOpcode(Opcode::Void);

src/shader_recompiler/frontend/ir/value.h

@@ -182,6 +182,9 @@ public:
     /// Add phi operand to a phi instruction.
     void AddPhiOperand(Block* predecessor, const Value& value);
 
+    /// Orders the Phi arguments from farthest away to nearest.
+    void OrderPhiArgs();
+
     void Invalidate();
     void ClearArgs();
 

src/shader_recompiler/frontend/maxwell/translate_program.cpp

@@ -27,9 +27,11 @@ IR::BlockList GenerateBlocks(const IR::AbstractSyntaxList& syntax_list) {
     }
     IR::BlockList blocks;
     blocks.reserve(num_syntax_blocks);
+    u32 order_index{};
     for (const auto& node : syntax_list) {
         if (node.type == IR::AbstractSyntaxNode::Type::Block) {
             blocks.push_back(node.data.block);
+            blocks.back()->SetOrder(order_index++);
         }
     }
     return blocks;

src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp

@@ -14,6 +14,7 @@
 //      https://link.springer.com/chapter/10.1007/978-3-642-37051-9_6
 //
 
+#include <deque>
 #include <span>
 #include <variant>
 #include <vector>
@@ -370,6 +371,26 @@ void VisitBlock(Pass& pass, IR::Block* block) {
     }
     pass.SealBlock(block);
 }
+
+IR::Type GetConcreteType(IR::Inst* inst) {
+    std::deque<IR::Inst*> queue;
+    queue.push_back(inst);
+    while (!queue.empty()) {
+        IR::Inst* current = queue.front();
+        queue.pop_front();
+        const size_t num_args{current->NumArgs()};
+        for (size_t i = 0; i < num_args; ++i) {
+            const auto set_type = current->Arg(i).Type();
+            if (set_type != IR::Type::Opaque) {
+                return set_type;
+            }
+            if (!current->Arg(i).IsImmediate()) {
+                queue.push_back(current->Arg(i).Inst());
+            }
+        }
+    }
+    return IR::Type::Opaque;
+}
 } // Anonymous namespace
 
 void SsaRewritePass(IR::Program& program) {
@@ -378,6 +399,16 @@ void SsaRewritePass(IR::Program& program) {
     for (auto block = program.post_order_blocks.rbegin(); block != end; ++block) {
         VisitBlock(pass, *block);
     }
+    for (auto block = program.post_order_blocks.rbegin(); block != end; ++block) {
+        for (IR::Inst& inst : (*block)->Instructions()) {
+            if (inst.GetOpcode() == IR::Opcode::Phi) {
+                if (inst.Type() == IR::Type::Opaque) {
+                    inst.SetFlags(GetConcreteType(&inst));
+                }
+                inst.OrderPhiArgs();
+            }
+        }
+    }
 }
 
 } // namespace Shader::Optimization

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -10,16 +10,14 @@
 #include <string_view>
 #include <tuple>
 #include <utility>
+
 #include <glad/glad.h>
-#include "common/alignment.h"
+
 #include "common/assert.h"
 #include "common/logging/log.h"
 #include "common/math_util.h"
 #include "common/microprofile.h"
-#include "common/scope_exit.h"
 #include "common/settings.h"
-#include "core/core.h"
-#include "core/hle/kernel/k_process.h"
 #include "core/memory.h"
 #include "video_core/engines/kepler_compute.h"
 #include "video_core/engines/maxwell_3d.h"

src/yuzu/main.cpp

@@ -299,8 +299,6 @@ GMainWindow::GMainWindow()
     SDL_EnableScreenSaver();
 #endif
 
-    Common::Log::Start();
-
     QStringList args = QApplication::arguments();
 
     if (args.size() < 2) {