2026-09-19 11:52:09

Signed-off-by: lizzie <lizzie@eden-emu.dev>

src/common/CMakeLists.txt

@@ -110,11 +110,12 @@ add_library(
     socket_types.h
     sparse_large_vector.cpp
     sparse_large_vector.h
-    spin_lock.h
     stb.cpp
     stb.h
     steady_clock.cpp
     steady_clock.h
+    stream.cpp
+    stream.h
     string_util.cpp
     string_util.h
     swap.h

src/common/cpu_features.cpp

@@ -244,7 +244,8 @@ WallClock::WallClock(bool invariant_, u64 rdtsc_frequency_) noexcept
     , ns_rdtsc_factor{invariant_ ? GetFixedPoint64Factor(NsRatio::den, rdtsc_frequency_) : 0}
     , us_rdtsc_factor{invariant_ ? GetFixedPoint64Factor(UsRatio::den, rdtsc_frequency_) : 0}
     , ms_rdtsc_factor{invariant_ ? GetFixedPoint64Factor(MsRatio::den, rdtsc_frequency_) : 0}
-    , rdtsc_ns_factor{invariant_ ? GetFixedPoint64Factor(rdtsc_frequency_, NsRatio::den) : 1}
+    , rdtsc_ns_integer{invariant_ ? rdtsc_frequency_ / NsRatio::den : 1}
+    , rdtsc_ns_factor{invariant_ ? GetFixedPoint64Factor(rdtsc_frequency_ % NsRatio::den, NsRatio::den) : 0}
     , cntpct_rdtsc_factor{invariant_ ? GetFixedPoint64Factor(CNTFRQ, rdtsc_frequency_) : 0}
     , gputick_rdtsc_factor{invariant_ ? GetFixedPoint64Factor(GPUTickFreq, rdtsc_frequency_) : 0}
     , invariant{invariant_}
@@ -291,7 +292,7 @@ bool WallClock::IsNative() const {
 }
 
 u64 WallClock::NsToTicks(std::chrono::nanoseconds ns) const {
-    return invariant ? MultiplyHigh(ns.count(), rdtsc_ns_factor) : ns.count();
+    return ns.count() * rdtsc_ns_integer + MultiplyHigh(ns.count(), rdtsc_ns_factor);
 }
 #elif defined(HAS_NCE)
 namespace {
@@ -416,7 +417,7 @@ u64 WallClock::NsToTicks(std::chrono::nanoseconds ns) const {
 const WallClock g_wall_clock = [] {
 #if defined(ARCHITECTURE_x86_64)
     auto const& caps = Common::g_cpu_caps;
-    return WallClock(caps.invariant_tsc && caps.tsc_frequency >= std::nano::den, caps.tsc_frequency);
+    return WallClock(caps.invariant_tsc && caps.tsc_frequency > std::nano::den, caps.tsc_frequency);
 #elif defined(HAS_NCE)
     return WallClock(false, 1);
 #else

src/common/cpu_features.h

@@ -96,6 +96,7 @@ public:
     u64 ns_rdtsc_factor;
     u64 us_rdtsc_factor;
     u64 ms_rdtsc_factor;
+    u64 rdtsc_ns_integer;
     u64 rdtsc_ns_factor;
     u64 cntpct_rdtsc_factor;
     u64 gputick_rdtsc_factor;

src/common/error.cpp

@@ -17,35 +17,33 @@
 
 namespace Common {
 
+// glibc, mlibc, musl, and newlib all define their own variants of strerror_r
+// We don't need to use the preprocessor, we can just select depending on return type
+template<typename T> std::string HandleStrerrorR(T r, char *err_str);
+template<> std::string HandleStrerrorR(char* r, char *) { return std::string{r}; }
+template<> std::string HandleStrerrorR(const char* r, char *) { return std::string{r}; }
+template<> std::string HandleStrerrorR(int r, char *err_str) {
+    return std::string{r != 0
+        ? "(strerror_r failed to format error)"
+        : err_str};
+}
+
 std::string NativeErrorToString(int e) {
 #ifdef _WIN32
     LPSTR err_str;
-
     DWORD res = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER |
                                    FORMAT_MESSAGE_IGNORE_INSERTS,
                                nullptr, e, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-                               reinterpret_cast<LPSTR>(&err_str), 1, nullptr);
-    if (!res) {
-        return "(FormatMessageA failed to format error)";
+                               LPSTR(&err_str), 1, nullptr);
+    if (res) {
+        std::string ret(err_str);
+        LocalFree(err_str);
+        return ret;
     }
-    std::string ret(err_str);
-    LocalFree(err_str);
-    return ret;
+    return "(FormatMessageA failed to format error)";
 #else
     char err_str[255];
-#if defined(__ANDROID__) ||                                                                            \
-    (defined(__GLIBC__) && (_GNU_SOURCE || (_POSIX_C_SOURCE < 200112L && _XOPEN_SOURCE < 600)))
-    // Thread safe (GNU-specific)
-    const char* str = strerror_r(e, err_str, sizeof(err_str));
-    return std::string(str);
-#else
-    // Thread safe (XSI-compliant)
-    int second_err = strerror_r(e, err_str, sizeof(err_str));
-    if (second_err != 0) {
-        return "(strerror_r failed to format error)";
-    }
-    return std::string(err_str);
-#endif // GLIBC etc.
+    return HandleStrerrorR(strerror_r(e, err_str, sizeof(err_str)), err_str);
 #endif // _WIN32
 }
 

src/common/fs/path_util.cpp

@@ -5,6 +5,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <algorithm>
+#include <cctype>
 #include <iostream>
 #include <sstream>
 #include "common/container/unordered_map.h"
@@ -480,28 +481,80 @@ std::string SanitizePath(std::string_view path_, DirectorySeparator directory_se
                            [type2](char c1, char c2) { return c1 == type2 && c2 == type2; }),
                path.end());
 
-    const bool absolute = !path.empty() && path[0] == type2;
-    std::vector<std::string_view> parts;
+    std::string root;
+    std::string_view components{path};
+    bool drive_relative = false;
 
-    for (const auto part : SplitPathComponents(path))
-    {
-        if (part.empty() || part == ".")
-            continue;
-        if (part == ".." && !parts.empty() && parts.back() != "..")
-            parts.pop_back();
-        else if (part != "..") parts.push_back(part);
+#ifdef _WIN32
+    const bool network = path.size() > 1 && path[0] == type2 && path[1] == type2;
+    const bool drive =
+        path.size() > 1 && std::isalpha(static_cast<unsigned char>(path[0])) && path[1] == ':';
+
+    if (network) {
+        root.assign(2, type2);
+        components.remove_prefix(2);
+    } else if (drive) {
+        root.assign(path.data(), 2);
+        components.remove_prefix(2);
+        if (!components.empty() && components.front() == type2) {
+            root += type2;
+            components.remove_prefix(1);
+        } else {
+            drive_relative = true;
+        }
+    }
+#endif
+
+    if (root.empty() && !components.empty() && components.front() == type2) {
+        root += type2;
+        components.remove_prefix(1);
     }
 
-    std::string resolved = absolute ? std::string(1, type2) : std::string{};
-    for (std::size_t i = 0; i < parts.size(); ++i)
-    {
-        if (i != 0)
+    const auto path_parts = SplitPathComponents(components);
+    std::size_t root_component_count = 0;
+#ifdef _WIN32
+    if (network) {
+        root_component_count = 2;
+
+        const auto is_unc = [](std::string_view part) {
+            return part.size() == 3 && (part[0] == 'U' || part[0] == 'u') &&
+                   (part[1] == 'N' || part[1] == 'n') && (part[2] == 'C' || part[2] == 'c');
+        };
+        if (path_parts.size() >= 2 && path_parts[0] == "?" && is_unc(path_parts[1])) {
+            root_component_count = 4;
+        }
+    }
+#endif
+
+    std::vector<std::string_view> parts;
+    for (std::size_t i = 0; i < path_parts.size(); ++i) {
+        const auto part = path_parts[i];
+        if (i < root_component_count) {
+            parts.push_back(part);
+        } else if (part.empty() || part == ".") {
+            continue;
+        } else if (part == "..") {
+            if (parts.size() > root_component_count) {
+                parts.pop_back();
+            }
+        } else {
+            parts.push_back(part);
+        }
+    }
+
+    const std::size_t root_length = root.size();
+    std::string resolved = std::move(root);
+    for (std::size_t i = 0; i < parts.size(); ++i) {
+        if (i != 0 || (!resolved.empty() && resolved.back() != type2 && !drive_relative))
             resolved += type2;
         resolved.append(parts[i].data(), parts[i].size());
     }
 
     path = std::move(resolved);
 
+    if (!path.empty() && path.size() == root_length) {
+        return path;
+    }
     return std::string(RemoveTrailingSlash(path));
 }
 

src/common/fs/path_util.h

@@ -347,8 +347,9 @@ enum class DirectorySeparator {
 // i.e. "C:\Users\Yuzu\Documents\save.bin" becomes {"C:", "Users", "Yuzu", "Documents", "save.bin" }
 [[nodiscard]] std::vector<std::string> SplitPathComponentsCopy(std::string_view filename);
 
-// Removes trailing slash, makes all '\\' into '/', and removes duplicate '/'. Makes '/' into '\\'
-// depending if directory_separator is BackwardSlash or PlatformDefault and running on windows
+// Normalizes directory separators, removes duplicate and non-root trailing separators, and resolves
+// '.' and '..' components without traversing above the path root. Windows drive and UNC roots are
+// preserved.
 [[nodiscard]] std::string SanitizePath(
     std::string_view path,
     DirectorySeparator directory_separator = DirectorySeparator::ForwardSlash);

src/common/page_table.h

@@ -96,15 +96,15 @@ struct PageTable {
         }
 
         /// Write page info atomically
-        constexpr void Store(bool marked, PageType type, u16 block, uintptr_t pointer) noexcept {
+        inline void Store(bool marked, PageType type, u16 block, uintptr_t pointer) noexcept {
             data_raw.store(std::bit_cast<u64>(Data{marked, type, block, pointer}));
         }
 
-        constexpr void MarkRasterizerCached() noexcept {
+        inline void MarkRasterizerCached() noexcept {
             data_raw.fetch_or(0b111);
         }
 
-        constexpr void MarkDebug(u64 ptr, u16 block) noexcept {
+        inline void MarkDebug(u64 ptr, u16 block) noexcept {
             Store(true, PageType::DebugMemory, block, ptr);
         }
 

src/common/sparse_large_vector.h

@@ -38,7 +38,8 @@ void FreeMemoryPages(void* base, std::size_t size) noexcept;
 
 /// A large page-aligned buffer that has optimized memory usage for zero-writes.
 template <typename T>
-requires std::is_trivially_copyable_v<T>
+    // MSVC doesn't regard structs with atomics as trivially copyable
+    // requires std::is_trivially_copyable_v<T>
 class SparseLargeVector final {
 public:
     constexpr SparseLargeVector() = default;

src/common/spin_lock.h

@@ -1,50 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#pragma once
-
-#ifdef _MSC_VER
-#include <intrin.h>
-#elif defined(ARCHITECTURE_x86_64)
-#include <xmmintrin.h>
-#endif
-#include <atomic>
-
-namespace Common {
-
-/// @brief A lock similar to mutex that forces a thread to spin wait instead calling the
-/// supervisor. Should be used on short sequences of code.
-struct SpinLock {
-    SpinLock() noexcept = default;
-    SpinLock(const SpinLock&) noexcept = delete;
-    SpinLock& operator=(const SpinLock&) noexcept = delete;
-    SpinLock(SpinLock&&) noexcept = delete;
-    SpinLock& operator=(SpinLock&&) noexcept = delete;
-
-    inline void lock() noexcept {
-        while (lck.test_and_set(std::memory_order_acquire)) {
-#if defined(ARCHITECTURE_x86_64)
-            _mm_pause();
-#elif defined(ARCHITECTURE_arm64) && defined(_MSC_VER)
-            __yield();
-#elif defined(ARCHITECTURE_arm64)
-            asm("yield");
-#endif
-        }
-    }
-
-    inline void unlock() noexcept {
-        lck.clear(std::memory_order_release);
-    }
-
-    [[nodiscard]] inline bool try_lock() noexcept {
-        return !lck.test_and_set(std::memory_order_acquire);
-    }
-
-    std::atomic_flag lck = ATOMIC_FLAG_INIT;
-};
-
-} // namespace Common

src/common/stream.cpp

@@ -0,0 +1,46 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <stdexcept>
+#include "common/common_types.h"
+#include "common/stream.h"
+
+namespace Common {
+
+Stream::Stream() = default;
+Stream::~Stream() = default;
+
+void Stream::Seek(s32 offset, SeekOrigin origin) {
+    if (origin == SeekOrigin::SetOrigin) {
+        if (offset < 0) {
+            position = 0;
+        } else if (position >= buffer.size()) {
+            position = buffer.size();
+        } else {
+            position = offset;
+        }
+    } else if (origin == SeekOrigin::FromCurrentPos) {
+        Seek(static_cast<s32>(position) + offset, SeekOrigin::SetOrigin);
+    } else if (origin == SeekOrigin::FromEnd) {
+        Seek(static_cast<s32>(buffer.size()) - offset, SeekOrigin::SetOrigin);
+    }
+}
+
+u8 Stream::ReadByte() {
+    if (position < buffer.size()) {
+        return buffer[position++];
+    } else {
+        throw std::out_of_range("Attempting to read a byte not within the buffer range");
+    }
+}
+
+void Stream::WriteByte(u8 byte) {
+    if (position == buffer.size()) {
+        buffer.push_back(byte);
+        position++;
+    } else {
+        buffer.insert(buffer.begin() + position, byte);
+    }
+}
+
+} // namespace Common

src/common/stream.h

@@ -0,0 +1,55 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <vector>
+#include "common/common_types.h"
+
+namespace Common {
+
+enum class SeekOrigin {
+    SetOrigin,
+    FromCurrentPos,
+    FromEnd,
+};
+
+class Stream {
+public:
+    /// Stream creates a bitstream and provides common functionality on the stream.
+    explicit Stream();
+    ~Stream();
+
+    Stream(const Stream&) = delete;
+    Stream& operator=(const Stream&) = delete;
+
+    Stream(Stream&&) = default;
+    Stream& operator=(Stream&&) = default;
+
+    /// Reposition bitstream "cursor" to the specified offset from origin
+    void Seek(s32 offset, SeekOrigin origin);
+
+    /// Reads next byte in the stream buffer and increments position
+    u8 ReadByte();
+
+    /// Writes byte at current position
+    void WriteByte(u8 byte);
+
+    [[nodiscard]] std::size_t GetPosition() const {
+        return position;
+    }
+
+    [[nodiscard]] std::vector<u8>& GetBuffer() {
+        return buffer;
+    }
+
+    [[nodiscard]] const std::vector<u8>& GetBuffer() const {
+        return buffer;
+    }
+
+private:
+    std::vector<u8> buffer;
+    std::size_t position{0};
+};
+
+} // namespace Common

src/common/uuid.cpp

@@ -208,9 +208,9 @@ UUID UUID::MakeRandomRFC4122V4() {
     return uuid;
 }
 
-UUID UUID::MakeRFC4122V5(std::span<u8, 20> sha1) {
+UUID UUID::MakeRFC4122V5(std::span<u8, 16> sha1) {
     UUID uuid{};
-    std::memcpy(&uuid.uuid, sha1.data(), sizeof(UUID));
+    std::memcpy(&uuid.uuid, sha1.data(), sha1.size());
     uuid.uuid[8] = 0x80 | (uuid.uuid[8] & 0x3F);
     uuid.uuid[6] = 0x50 | (uuid.uuid[6] & 0xF);
     return uuid;

src/common/uuid.h

@@ -104,7 +104,7 @@ struct UUID {
     /// @returns A random UUID that is RFC 4122 Version 4 compliant.
     [[nodiscard]] static UUID MakeRandomRFC4122V4();
 
-    [[nodiscard]] static UUID MakeRFC4122V5(std::span<u8, 20> sha1);
+    [[nodiscard]] static UUID MakeRFC4122V5(std::span<u8, 16> sha1);
 
     friend constexpr bool operator==(const UUID& lhs, const UUID& rhs) = default;
 };

src/core/CMakeLists.txt

@@ -796,6 +796,8 @@ add_library(core STATIC
     hle/service/ns/application_manager_interface.h
     hle/service/ns/application_version_interface.cpp
     hle/service/ns/application_version_interface.h
+    hle/service/ns/async_result.cpp
+    hle/service/ns/async_result.h
     hle/service/ns/content_management_interface.cpp
     hle/service/ns/content_management_interface.h
     hle/service/ns/develop_interface.cpp
@@ -810,8 +812,6 @@ add_library(core STATIC
     hle/service/ns/ecommerce_interface.h
     hle/service/ns/factory_reset_interface.cpp
     hle/service/ns/factory_reset_interface.h
-    hle/service/ns/i_async_result.cpp
-    hle/service/ns/i_async_result.h
     hle/service/ns/language.cpp
     hle/service/ns/language.h
     hle/service/ns/ns.cpp

src/core/arm/dynarmic/arm_dynarmic_32.cpp

@@ -22,21 +22,15 @@ DynarmicCallbacks32::DynarmicCallbacks32(ArmDynarmic32& parent, Kernel::KProcess
     , m_check_memory_access{m_debugger_enabled || !Settings::values.cpuopt_ignore_memory_aborts.GetValue()}
 {}
 
-u8 DynarmicCallbacks32::MemoryRead8(u32 vaddr) {
-    CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read8(vaddr);
-}
-u16 DynarmicCallbacks32::MemoryRead16(u32 vaddr) {
-    CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read16(vaddr);
-}
-u32 DynarmicCallbacks32::MemoryRead32(u32 vaddr) {
-    CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read32(vaddr);
-}
-u64 DynarmicCallbacks32::MemoryRead64(u32 vaddr) {
-    CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read64(vaddr);
+u64 DynarmicCallbacks32::MemoryRead(u32 vaddr, size_t size) {
+    CheckMemoryAccess(vaddr, size, Kernel::DebugWatchpointType::Read);
+    switch (size) {
+    case sizeof(u64): return m_memory.Read64(vaddr);
+    case sizeof(u32): return m_memory.Read32(vaddr);
+    case sizeof(u16): return m_memory.Read16(vaddr);
+    case sizeof(u8): return m_memory.Read8(vaddr);
+    default: UNREACHABLE();
+    }
 }
 
 std::optional<u32> DynarmicCallbacks32::MemoryReadCode(u32 vaddr) {
@@ -50,27 +44,17 @@ std::optional<u32> DynarmicCallbacks32::MemoryReadCode(u32 vaddr) {
     return cached_code_page.inst[(vaddr & Core::Memory::YUZU_PAGEMASK) / sizeof(u32)];
 }
 
-void DynarmicCallbacks32::MemoryWrite8(u32 vaddr, u8 value) {
-    if (CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write8(vaddr, value);
+void DynarmicCallbacks32::MemoryWrite(Dynarmic::A32::VAddr vaddr, u64 value, size_t size) {
+    if (CheckMemoryAccess(vaddr, size, Kernel::DebugWatchpointType::Write)) {
+        switch (size) {
+        case sizeof(u64): return m_memory.Write64(vaddr, value);
+        case sizeof(u32): return m_memory.Write32(vaddr, u32(value));
+        case sizeof(u16): return m_memory.Write16(vaddr, u16(value));
+        case sizeof(u8): return m_memory.Write8(vaddr, u8(value));
+        default: UNREACHABLE();
+        }
     }
 }
-void DynarmicCallbacks32::MemoryWrite16(u32 vaddr, u16 value) {
-    if (CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write16(vaddr, value);
-    }
-}
-void DynarmicCallbacks32::MemoryWrite32(u32 vaddr, u32 value) {
-    if (CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write32(vaddr, value);
-    }
-}
-void DynarmicCallbacks32::MemoryWrite64(u32 vaddr, u64 value) {
-    if (CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write64(vaddr, value);
-    }
-}
-
 bool DynarmicCallbacks32::MemoryWriteExclusive8(u32 vaddr, u8 value, u8 expected) {
     return CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write) &&
             m_memory.WriteExclusive8(vaddr, value, expected);
@@ -177,7 +161,7 @@ void ArmDynarmic32::MakeJit(Common::PageTable* page_table) {
         config.page_table = reinterpret_cast<std::array<std::uint8_t*, NumPageTableEntries>*>(
             const_cast<Common::PageTable::PageEntryData*>(page_table->entries.data()));
         config.page_table_pointer_mask = Common::PageTable::ATTRIBUTE_MASK;
-        config.page_table_marked_bit = 0;
+        config.page_table_marked_bit = uint8_t(0);
         config.absolute_offset_page_table = true;
         config.detect_misaligned_access_via_page_table = 16 | 32 | 64 | 128;
         config.only_detect_misalignment_via_page_table_on_page_boundary = true;
@@ -193,7 +177,7 @@ void ArmDynarmic32::MakeJit(Common::PageTable* page_table) {
             Kernel::Board::Nintendo::Nx::KSystemControl::Init::GetIntendedMemorySize()) < (1ULL << 39)) {
             // Systems like FreeBSD allocate memory really low by default, and since we pack our page table entries,
             // we have to manually sign extend when our actual pointer is negative.
-            config.page_table_sign_extension = Common::PageTable::SIGN_BIT;
+            config.page_table_sign_extension = std::uint8_t(Common::PageTable::SIGN_BIT);
         }
     }
 

src/core/arm/dynarmic/arm_dynarmic_32.h

@@ -30,18 +30,12 @@ class System;
 class DynarmicCallbacks32 : public Dynarmic::A32::UserCallbacks {
 public:
     explicit DynarmicCallbacks32(ArmDynarmic32& parent, Kernel::KProcess* process);
-    u8 MemoryRead8(u32 vaddr) override;
-    u16 MemoryRead16(u32 vaddr) override;
-    u32 MemoryRead32(u32 vaddr) override;
-    u64 MemoryRead64(u32 vaddr) override;
+    u64 MemoryRead(u32 vaddr, size_t size) override;
     std::optional<u32> MemoryReadCode(u32 vaddr) override;
     void InstructionSynchronizationBarrierRaised() override {
         last_code_addr = u64(-1); //reset back, force refetch
     }
-    void MemoryWrite8(u32 vaddr, u8 value) override;
-    void MemoryWrite16(u32 vaddr, u16 value) override;
-    void MemoryWrite32(u32 vaddr, u32 value) override;
-    void MemoryWrite64(u32 vaddr, u64 value) override;
+    void MemoryWrite(Dynarmic::A32::VAddr vaddr, u64 value, size_t size) override;
     bool MemoryWriteExclusive8(u32 vaddr, u8 value, u8 expected) override;
     bool MemoryWriteExclusive16(u32 vaddr, u16 value, u16 expected) override;
     bool MemoryWriteExclusive32(u32 vaddr, u32 value, u32 expected) override;

src/core/arm/dynarmic/arm_dynarmic_64.cpp

@@ -10,6 +10,7 @@
 #include "core/arm/dynarmic/dynarmic_exclusive_monitor.h"
 #include "core/core_timing.h"
 #include "core/hle/kernel/k_process.h"
+#include "dynarmic/interface/A64/config.h"
 
 namespace Core {
 
@@ -21,21 +22,15 @@ DynarmicCallbacks64::DynarmicCallbacks64(ArmDynarmic64& parent, Kernel::KProcess
     , m_check_memory_access{m_debugger_enabled || !Settings::values.cpuopt_ignore_memory_aborts.GetValue()}
 {}
 
-u8 DynarmicCallbacks64::MemoryRead8(u64 vaddr) {
-    CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read8(vaddr);
-}
-u16 DynarmicCallbacks64::MemoryRead16(u64 vaddr) {
-    CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read16(vaddr);
-}
-u32 DynarmicCallbacks64::MemoryRead32(u64 vaddr) {
-    CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read32(vaddr);
-}
-u64 DynarmicCallbacks64::MemoryRead64(u64 vaddr) {
-    CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Read);
-    return m_memory.Read64(vaddr);
+u64 DynarmicCallbacks64::MemoryRead(u64 vaddr, size_t size) {
+    CheckMemoryAccess(vaddr, size, Kernel::DebugWatchpointType::Read);
+    switch (size) {
+    case sizeof(u64): return m_memory.Read64(vaddr);
+    case sizeof(u32): return m_memory.Read32(vaddr);
+    case sizeof(u16): return m_memory.Read16(vaddr);
+    case sizeof(u8): return m_memory.Read8(vaddr);
+    default: UNREACHABLE();
+    }
 }
 Dynarmic::A64::Vector DynarmicCallbacks64::MemoryRead128(u64 vaddr) {
     CheckMemoryAccess(vaddr, 16, Kernel::DebugWatchpointType::Read);
@@ -53,24 +48,15 @@ std::optional<u32> DynarmicCallbacks64::MemoryReadCode(u64 vaddr) {
     return cached_code_page.inst[(vaddr & Core::Memory::YUZU_PAGEMASK) / sizeof(u32)];
 }
 
-void DynarmicCallbacks64::MemoryWrite8(u64 vaddr, u8 value) {
-    if (CheckMemoryAccess(vaddr, 1, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write8(vaddr, value);
-    }
-}
-void DynarmicCallbacks64::MemoryWrite16(u64 vaddr, u16 value) {
-    if (CheckMemoryAccess(vaddr, 2, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write16(vaddr, value);
-    }
-}
-void DynarmicCallbacks64::MemoryWrite32(u64 vaddr, u32 value) {
-    if (CheckMemoryAccess(vaddr, 4, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write32(vaddr, value);
-    }
-}
-void DynarmicCallbacks64::MemoryWrite64(u64 vaddr, u64 value) {
-    if (CheckMemoryAccess(vaddr, 8, Kernel::DebugWatchpointType::Write)) {
-        m_memory.Write64(vaddr, value);
+void DynarmicCallbacks64::MemoryWrite(Dynarmic::A64::VAddr vaddr, u64 value, std::size_t size) {
+    if (CheckMemoryAccess(vaddr, size, Kernel::DebugWatchpointType::Write)) {
+        switch (size) {
+        case sizeof(u64): return m_memory.Write64(vaddr, u64(value));
+        case sizeof(u32): return m_memory.Write32(vaddr, u32(value));
+        case sizeof(u16): return m_memory.Write16(vaddr, u16(value));
+        case sizeof(u8): return m_memory.Write8(vaddr, u8(value));
+        default: UNREACHABLE();
+        }
     }
 }
 void DynarmicCallbacks64::MemoryWrite128(u64 vaddr, Dynarmic::A64::Vector value) {
@@ -216,7 +202,7 @@ void ArmDynarmic64::MakeJit(Common::PageTable* page_table, std::size_t address_s
             const_cast<Common::PageTable::PageEntryData*>(page_table->entries.data()));
         config.page_table_address_space_bits = std::uint32_t(address_space_bits);
         config.page_table_pointer_mask = Common::PageTable::ATTRIBUTE_MASK;
-        config.page_table_marked_bit = 0;
+        config.page_table_marked_bit = uint8_t(0);
         config.silently_mirror_page_table = false;
         config.absolute_offset_page_table = true;
         config.detect_misaligned_access_via_page_table = 16 | 32 | 64 | 128;
@@ -235,7 +221,7 @@ void ArmDynarmic64::MakeJit(Common::PageTable* page_table, std::size_t address_s
             Kernel::Board::Nintendo::Nx::KSystemControl::Init::GetIntendedMemorySize()) < (1ULL << 39)) {
             // Systems like FreeBSD allocate memory really low by default, and since we pack our page table entries,
             // we have to manually sign extend when our actual pointer is negative.
-            config.page_table_sign_extension = Common::PageTable::SIGN_BIT;
+            config.page_table_sign_extension = std::uint8_t(Common::PageTable::SIGN_BIT);
         }
     }
 

src/core/arm/dynarmic/arm_dynarmic_64.h

@@ -16,6 +16,7 @@
 #include "common/hash.h"
 #include "core/arm/arm_interface.h"
 #include "core/arm/dynarmic/dynarmic_exclusive_monitor.h"
+#include "dynarmic/interface/A64/config.h"
 
 namespace Core::Memory {
 class Memory;
@@ -36,19 +37,13 @@ class DynarmicCallbacks64 : public Dynarmic::A64::UserCallbacks {
 public:
     explicit DynarmicCallbacks64(ArmDynarmic64& parent, Kernel::KProcess* process);
 
-    u8 MemoryRead8(u64 vaddr) override;
-    u16 MemoryRead16(u64 vaddr) override;
-    u32 MemoryRead32(u64 vaddr) override;
-    u64 MemoryRead64(u64 vaddr) override;
+    u64 MemoryRead(u64 vaddr, size_t size) override;
     Dynarmic::A64::Vector MemoryRead128(u64 vaddr) override;
     std::optional<u32> MemoryReadCode(u64 vaddr) override;
     void InstructionSynchronizationBarrierRaised() override {
         last_code_addr = u64(-1); //reset back, force refetch
     }
-    void MemoryWrite8(u64 vaddr, u8 value) override;
-    void MemoryWrite16(u64 vaddr, u16 value) override;
-    void MemoryWrite32(u64 vaddr, u32 value) override;
-    void MemoryWrite64(u64 vaddr, u64 value) override;
+    void MemoryWrite(Dynarmic::A64::VAddr vaddr, u64 value, std::size_t size) override;
     void MemoryWrite128(u64 vaddr, Dynarmic::A64::Vector value) override;
     bool MemoryWriteExclusive8(u64 vaddr, std::uint8_t value, std::uint8_t expected) override;
     bool MemoryWriteExclusive16(u64 vaddr, std::uint16_t value, std::uint16_t expected) override;

src/core/file_sys/ips_layer.cpp

@@ -100,8 +100,7 @@ VirtualFile PatchIPS(const VirtualFile& in, const VirtualFile& ips) {
 
 
 struct IPSwitchRecord {
-    std::array<uint8_t, 256 - sizeof(size_t)> data;
-    size_t count;
+    std::vector<uint8_t> data;
 };
 struct IPSwitchCompiler::IPSwitchPatch {
     ::Common::unordered_map<u32, IPSwitchRecord> records;
@@ -122,22 +121,23 @@ static IPSwitchRecord EscapeStringSequences(std::string_view sv) {
     IPSwitchRecord r{};
     for (auto it = sv.cbegin(); it < sv.cend(); ) {
         if (*it == '\\' && it + 1 < sv.cend()) {
-            switch (it[1]) {
-            case 'a': r.data[r.count] = '\a'; break;
-            case 'b': r.data[r.count] = '\b'; break;
-            case 'e': r.data[r.count] = '\e'; break;
-            case 'f': r.data[r.count] = '\f'; break;
-            case 'n': r.data[r.count] = '\n'; break;
-            case 'r': r.data[r.count] = '\r'; break;
-            case 't': r.data[r.count] = '\t'; break;
-            case 'v': r.data[r.count] = '\v'; break;
-            case '?': r.data[r.count] = '\?'; break;
-            default: r.data[r.count] = it[1]; break;
-            }
-            ++r.count;
+            r.data.push_back([it]() {
+                switch (it[1]) {
+                case 'a': return '\a';
+                case 'b': return '\b';
+                case 'e': return '\e';
+                case 'f': return '\f';
+                case 'n': return '\n';
+                case 'r': return '\r';
+                case 't': return '\t';
+                case 'v': return '\v';
+                case '?': return '\?';
+                default: return it[1];
+                }
+            }());
             it += 2;
         } else {
-            ++r.count;
+            r.data.push_back(*it);
             ++it;
         }
     }
@@ -223,8 +223,8 @@ void IPSwitchCompiler::Parse(std::span<u8 const> bytes) {
                 if (start <= line.cend() && end <= line.cend()) {
                     // Actually IPS wants ordering from {lsb, ..., msb} -- so LE and BE are inverted, fun!
                     auto const hs = Common::HexStringToVector({start, end}, is_little_endian);
+                    r.data.resize(hs.size());
                     std::memcpy(r.data.data(), hs.data(), hs.size());
-                    r.count = hs.size();
                     LOG_INFO(Loader, "[H] value @ {:#08X}", offset);
                     patches.back().records.insert_or_assign(u32(offset), std::move(r));
                 } else {
@@ -293,7 +293,7 @@ VirtualFile IPSwitchCompiler::Apply(const VirtualFile& in) const {
         if (patch.enabled) {
             for (const auto& record : patch.records) {
                 if (record.first < in_data.size()) {
-                    auto replace_size = record.second.count;
+                    auto replace_size = record.second.data.size();
                     if (record.first + replace_size > in_data.size())
                         replace_size = in_data.size() - record.first;
                     std::memcpy(in_data.data() + record.first, record.second.data.data(), replace_size);

src/core/file_sys/patch_manager.cpp

@@ -9,6 +9,7 @@
 #include <cstddef>
 #include <cstring>
 
+#include "common/assert.h"
 #include "common/hex_util.h"
 #include "common/logging.h"
 #include "common/settings.h"
@@ -156,12 +157,15 @@ std::string GetUpdateVersionStringFromSlot(const ContentProvider* provider, u64
     NACP nacp{nacp_file};
     return nacp.GetVersionString();
 }
+YUZU_NO_INLINE std::optional<u64> GetParentApplicationId(const ContentProvider* provider, u64 title_id) {
+    return provider == nullptr ? std::nullopt : provider->GetParentApplicationId(title_id);
+}
 } // Anonymous namespace
 
 PatchManager::PatchManager(u64 title_id_,
                            const Service::FileSystem::FileSystemController& fs_controller_,
                            const ContentProvider& content_provider_)
-    : title_id{title_id_}, fs_controller{fs_controller_}, content_provider{content_provider_} {}
+    : title_id{title_id_}, parent_title_id{GetParentApplicationId(std::addressof(content_provider_), title_id_)}, fs_controller{fs_controller_}, content_provider{content_provider_} {}
 
 PatchManager::~PatchManager() = default;
 
@@ -169,13 +173,35 @@ u64 PatchManager::GetTitleID() const {
     return title_id;
 }
 
+VirtualDir PatchManager::GetModificationLoadRoot(bool sdmc) const {
+    const auto get_root = [&](u64 id) {
+        return sdmc ? fs_controller.GetSDMCModificationLoadRoot(id) : fs_controller.GetModificationLoadRoot(id);
+    };
+    auto root = get_root(title_id);
+    if (!parent_title_id) {
+        return root;
+    }
+    std::vector<VirtualDir> roots{std::move(root), get_root(*parent_title_id)};
+    std::erase(roots, nullptr);
+    return LayeredVfsDirectory::MakeLayeredDirectory(std::move(roots));
+}
+
+std::vector<std::string> PatchManager::GetDisabledAddons() const {
+    auto disabled = Settings::values.disabled_addons[title_id];
+    if (parent_title_id) {
+        const auto& shared = Settings::values.disabled_addons[*parent_title_id];
+        disabled.insert(disabled.end(), shared.begin(), shared.end());
+    }
+    return disabled;
+}
+
 VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
     LOG_INFO(Loader, "Patching ExeFS for title_id={:016X}", title_id);
 
     if (exefs == nullptr)
         return exefs;
 
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto disabled = GetDisabledAddons();
 
     bool update_disabled = true;
     std::optional<u32> enabled_version;
@@ -303,8 +329,8 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
     }
 
     // LayeredExeFS
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
-    const auto sdmc_load_dir = fs_controller.GetSDMCModificationLoadRoot(title_id);
+    const auto load_dir = GetModificationLoadRoot();
+    const auto sdmc_load_dir = GetModificationLoadRoot(true);
 
     std::vector<VirtualDir> patch_dirs = {sdmc_load_dir};
     if (load_dir != nullptr) {
@@ -346,7 +372,7 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
 }
 
 std::vector<VirtualFile> PatchManager::CollectPatches(const std::vector<VirtualDir>& patch_dirs, const std::string& build_id) const {
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto disabled = GetDisabledAddons();
     const auto nso_build_id = fmt::format("{:0<64}", build_id);
 
     std::vector<VirtualFile> out;
@@ -405,7 +431,7 @@ std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso, const std::st
 
     LOG_INFO(Loader, "Patching NSO for name={}, build_id={}", name, build_id);
 
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
+    const auto load_dir = GetModificationLoadRoot();
     if (load_dir == nullptr) {
         LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
         return nso;
@@ -448,7 +474,7 @@ bool PatchManager::HasNSOPatch(const BuildID& build_id_, std::string_view name)
 
     LOG_INFO(Loader, "Querying NSO patch existence for build_id={}, name={}", build_id, name);
 
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
+    const auto load_dir = GetModificationLoadRoot();
     if (load_dir == nullptr) {
         LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
         return false;
@@ -462,13 +488,13 @@ bool PatchManager::HasNSOPatch(const BuildID& build_id_, std::string_view name)
 }
 
 std::vector<Core::Memory::CheatEntry> PatchManager::CreateCheatList(const BuildID& build_id_) const {
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
+    const auto load_dir = GetModificationLoadRoot();
     if (load_dir == nullptr) {
         LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
         return {};
     }
 
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto disabled = GetDisabledAddons();
     auto patch_dirs = load_dir->GetSubdirectories();
     std::sort(patch_dirs.begin(), patch_dirs.end(), [](auto const& l, auto const& r) { return l->GetName() < r->GetName(); });
 
@@ -502,17 +528,16 @@ std::vector<Core::Memory::CheatEntry> PatchManager::CreateCheatList(const BuildI
     return out;
 }
 
-static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type,
-                           const Service::FileSystem::FileSystemController& fs_controller) {
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
-    const auto sdmc_load_dir = fs_controller.GetSDMCModificationLoadRoot(title_id);
+void PatchManager::ApplyLayeredFS(VirtualFile& romfs, ContentRecordType type) const {
+    const auto load_dir = GetModificationLoadRoot();
+    const auto sdmc_load_dir = GetModificationLoadRoot(true);
     if ((type != ContentRecordType::Program && type != ContentRecordType::Data &&
          type != ContentRecordType::HtmlDocument) ||
         (load_dir == nullptr && sdmc_load_dir == nullptr)) {
         return;
     }
 
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto disabled = GetDisabledAddons();
     std::vector<VirtualDir> patch_dirs = load_dir->GetSubdirectories();
     if (std::find(disabled.cbegin(), disabled.cend(), "SDMC") == disabled.cend()) {
         patch_dirs.push_back(sdmc_load_dir);
@@ -591,7 +616,7 @@ VirtualFile PatchManager::PatchRomFS(const NCA* base_nca, VirtualFile base_romfs
 
     // Game Updates
     const auto update_tid = GetUpdateTitleID(title_id);
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto disabled = GetDisabledAddons();
 
     bool update_disabled = true;
     std::optional<u32> enabled_version;
@@ -698,7 +723,7 @@ VirtualFile PatchManager::PatchRomFS(const NCA* base_nca, VirtualFile base_romfs
 
     // LayeredFS
     if (apply_layeredfs) {
-        ApplyLayeredFS(romfs, title_id, type, fs_controller);
+        ApplyLayeredFS(romfs, type);
     }
 
     return romfs;
@@ -1072,15 +1097,22 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
 std::optional<u32> PatchManager::GetGameVersion() const {
     const auto update_tid = GetUpdateTitleID(title_id);
     if (content_provider.HasEntry(update_tid, ContentRecordType::Program)) {
-        return content_provider.GetEntryVersion(update_tid);
+        const auto version = content_provider.GetEntryVersion(update_tid);
+        return version || !parent_title_id ? version : content_provider.GetEntryVersion(GetUpdateTitleID(*parent_title_id));
     }
 
-    return content_provider.GetEntryVersion(title_id);
+    const auto version = content_provider.GetEntryVersion(title_id);
+    return version || !parent_title_id ? version : content_provider.GetEntryVersion(*parent_title_id);
 }
 
 PatchManager::Metadata PatchManager::GetControlMetadata() const {
     const auto base_control_nca = content_provider.GetEntry(title_id, ContentRecordType::Control);
     if (base_control_nca == nullptr) {
+        if (parent_title_id) {
+            const auto control_id = content_provider.HasEntry(*parent_title_id, ContentRecordType::Control) ? *parent_title_id : GetUpdateTitleID(*parent_title_id);
+            const PatchManager parent{control_id, fs_controller, content_provider};
+            return parent.GetControlMetadata();
+        }
         return {};
     }
 

src/core/file_sys/patch_manager.h

@@ -109,10 +109,14 @@ public:
     [[nodiscard]] static PatchManager::Metadata GetMetadataFromBaseOrUpdate(Core::System& system, u64 application_id) noexcept;
 
 private:
+    [[nodiscard]] VirtualDir GetModificationLoadRoot(bool sdmc = false) const;
+    [[nodiscard]] std::vector<std::string> GetDisabledAddons() const;
+    void ApplyLayeredFS(VirtualFile& romfs, ContentRecordType type) const;
     [[nodiscard]] std::vector<VirtualFile> CollectPatches(const std::vector<VirtualDir>& patch_dirs,
                                                           const std::string& build_id) const;
 
     u64 title_id;
+    std::optional<u64> parent_title_id;
     const Service::FileSystem::FileSystemController& fs_controller;
     const ContentProvider& content_provider;
 };

src/core/file_sys/registered_cache.cpp

@@ -5,6 +5,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <algorithm>
+#include <limits>
 #include <random>
 #include <regex>
 #include <openssl/evp.h>
@@ -348,6 +349,22 @@ std::vector<ContentProviderEntry> ContentProvider::ListEntries() const {
     return ListEntriesFilter(std::nullopt, std::nullopt, std::nullopt);
 }
 
+std::optional<u64> ContentProvider::GetParentApplicationId(u64 program_id) const {
+    const auto application_id = GetBaseTitleID(program_id);
+    const auto program_index = program_id - application_id;
+    if (program_index == 0 || program_index > std::numeric_limits<u8>::max()) {
+        return std::nullopt;
+    }
+    if (!ListEntriesFilter(TitleType::Application, ContentRecordType::Meta, program_id).empty()) {
+        return std::nullopt;
+    }
+    if ((!ListEntriesFilter(TitleType::Application, ContentRecordType::Meta, application_id).empty() && HasEntry(program_id, ContentRecordType::Program))
+     || (!ListEntriesFilter(TitleType::Update, ContentRecordType::Meta, GetUpdateTitleID(application_id)).empty() && HasEntry(GetUpdateTitleID(program_id), ContentRecordType::Program))) {
+        return application_id;
+    }
+    return std::nullopt;
+}
+
 PlaceholderCache::PlaceholderCache(VirtualDir dir_) : dir(std::move(dir_)) {}
 
 bool PlaceholderCache::Create(const NcaID& id, u64 size) const {

src/core/file_sys/registered_cache.h

@@ -100,6 +100,8 @@ public:
         std::optional<TitleType> title_type = {}, std::optional<ContentRecordType> record_type = {},
         std::optional<u64> title_id = {}) const = 0;
 
+    [[nodiscard]] std::optional<u64> GetParentApplicationId(u64 program_id) const;
+
 protected:
     // A single instance of KeyManager to be used by GetEntry()
     Core::Crypto::KeyManager& keys = Core::Crypto::KeyManager::Instance();

src/core/file_sys/savedata_factory.cpp

@@ -9,6 +9,7 @@
 #include "common/logging.h"
 #include "common/uuid.h"
 #include "core/core.h"
+#include "core/file_sys/registered_cache.h"
 #include "core/file_sys/savedata_factory.h"
 #include "core/file_sys/vfs/vfs.h"
 
@@ -61,17 +62,24 @@ SaveDataFactory::SaveDataFactory(Core::System& system_, ProgramId program_id_,
 
 SaveDataFactory::~SaveDataFactory() = default;
 
+std::string SaveDataFactory::GetSaveDataPath(SaveDataSpaceId space, SaveDataType type, u64 title_id, u128 user_id, u64 save_id) const {
+    if (type == SaveDataType::Account || type == SaveDataType::Device) {
+        const auto requested_id = title_id != 0 ? title_id : program_id;
+        const auto parent_id = system.GetContentProvider().GetParentApplicationId(requested_id);
+        title_id = parent_id.value_or(requested_id);
+    }
+    return GetFullPath(program_id, dir, space, type, title_id, user_id, save_id);
+}
+
 VirtualDir SaveDataFactory::Create(SaveDataSpaceId space, const SaveDataAttribute& meta) const {
-    const auto save_directory = GetFullPath(program_id, dir, space, meta.type, meta.program_id,
-                                            meta.user_id, meta.system_save_data_id);
+    const auto save_directory = GetSaveDataPath(space, meta.type, meta.program_id, meta.user_id, meta.system_save_data_id);
 
     return dir->CreateDirectoryRelative(save_directory);
 }
 
 VirtualDir SaveDataFactory::Open(SaveDataSpaceId space, const SaveDataAttribute& meta) const {
 
-    const auto save_directory = GetFullPath(program_id, dir, space, meta.type, meta.program_id,
-                                            meta.user_id, meta.system_save_data_id);
+    const auto save_directory = GetSaveDataPath(space, meta.type, meta.program_id, meta.user_id, meta.system_save_data_id);
 
     auto out = dir->GetDirectoryRelative(save_directory);
 
@@ -154,8 +162,7 @@ std::string SaveDataFactory::GetUserGameSaveDataRoot(u128 user_id, bool future)
 
 SaveDataSize SaveDataFactory::ReadSaveDataSize(SaveDataType type, u64 title_id,
                                                u128 user_id) const {
-    const auto path =
-        GetFullPath(program_id, dir, SaveDataSpaceId::User, type, title_id, user_id, 0);
+    const auto path = GetSaveDataPath(SaveDataSpaceId::User, type, title_id, user_id, 0);
     const auto relative_dir = GetOrCreateDirectoryRelative(dir, path);
 
     const auto size_file = relative_dir->GetFile(GetSaveDataSizeFileName());
@@ -173,8 +180,7 @@ SaveDataSize SaveDataFactory::ReadSaveDataSize(SaveDataType type, u64 title_id,
 
 void SaveDataFactory::WriteSaveDataSize(SaveDataType type, u64 title_id, u128 user_id,
                                         SaveDataSize new_value) const {
-    const auto path =
-        GetFullPath(program_id, dir, SaveDataSpaceId::User, type, title_id, user_id, 0);
+    const auto path = GetSaveDataPath(SaveDataSpaceId::User, type, title_id, user_id, 0);
     const auto relative_dir = GetOrCreateDirectoryRelative(dir, path);
 
     const auto size_file = relative_dir->CreateFile(GetSaveDataSizeFileName());

src/core/file_sys/savedata_factory.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -47,6 +50,7 @@ public:
     void SetAutoCreate(bool state);
 
 private:
+    std::string GetSaveDataPath(SaveDataSpaceId space, SaveDataType type, u64 title_id, u128 user_id, u64 save_id) const;
     Core::System& system;
     ProgramId program_id;
     VirtualDir dir;

src/core/frontend/applets/controller.cpp

@@ -12,6 +12,7 @@
 #include "hid_core/frontend/emulated_controller.h"
 #include "hid_core/hid_core.h"
 #include "hid_core/hid_types.h"
+#include <array>
 
 namespace Core::Frontend {
 
@@ -29,23 +30,39 @@ void DefaultControllerApplet::ReconfigureControllers(ReconfigureCallback callbac
 
     const std::size_t min_supported_players =
         parameters.enable_single_mode ? 1 : parameters.min_players;
+    using Core::HID::NpadStyleIndex;
+    const std::size_t max_supported_players = parameters.enable_single_mode ? 1 : parameters.max_players;
+    std::size_t num_selected_players = 0;
+    std::array<bool, HID::HIDCore::available_controllers> keep_connected{};
 
-    // Disconnect Handheld first.
+    // reserve existing AND valid players before filling slots. include Handheld, but not other
+    for (std::size_t index = 0; index < hid_core.available_controllers - 1; ++index) {
+        const auto* controller = hid_core.GetEmulatedControllerByIndex(index);
+        if (!parameters.keep_controllers_connected || !controller->IsConnected() || num_selected_players >= max_supported_players) continue;
+
+        const auto style = controller->GetNpadStyleIndex();
+        keep_connected[index] =
+            (style == NpadStyleIndex::Fullkey && parameters.allow_pro_controller) ||
+            (style == NpadStyleIndex::JoyconDual && parameters.allow_dual_joycons) ||
+            (style == NpadStyleIndex::JoyconLeft && parameters.allow_left_joycon) ||
+            (style == NpadStyleIndex::JoyconRight && parameters.allow_right_joycon) ||
+            (style == NpadStyleIndex::Handheld && parameters.enable_single_mode && parameters.allow_handheld && !Settings::IsDockedMode()) ||
+            (style == NpadStyleIndex::GameCube && parameters.allow_gamecube_controller);
+        num_selected_players += keep_connected[index];
+    }
     auto* handheld = hid_core.GetEmulatedController(Core::HID::NpadIdType::Handheld);
-    handheld->Disconnect();
+    if (!keep_connected[hid_core.available_controllers - 2]) handheld->Disconnect();
 
     // Deduce the best configuration based on the input parameters.
     for (std::size_t index = 0; index < hid_core.available_controllers - 2; ++index) {
         auto* controller = hid_core.GetEmulatedControllerByIndex(index);
 
-        // First, disconnect all controllers regardless of the value of keep_controllers_connected.
-        // This makes it easy to connect the desired controllers.
+        if (keep_connected[index]) continue;
         controller->Disconnect();
 
-        // Only connect the minimum number of required players.
-        if (index >= min_supported_players) {
-            continue;
-        }
+        // only add players still needed to reach the minimum
+        if (num_selected_players >= min_supported_players) continue;
+        ++num_selected_players;
 
         // Connect controllers based on the following priority list from highest to lowest priority:
         // Pro Controller -> Dual Joycons -> Left Joycon/Right Joycon -> Handheld

src/core/hle/kernel/k_scheduler.cpp

@@ -465,6 +465,10 @@ void KScheduler::ScheduleImplFiber(KernelCore& kernel) {
         // Check if we need scheduling. If we do, then we can't complete the switch and should
         // retry.
         if (m_state.needs_scheduling.load(std::memory_order_seq_cst)) {
+            // Some libc++ lazily init mutex
+            [[maybe_unused]] auto const can_lock = highest_priority_thread->m_context_guard.try_lock();
+            DEBUG_ASSERT(!can_lock);
+
             // Our switch failed.
             // We should unlock the thread context, and then retry.
             highest_priority_thread->m_context_guard.unlock();
@@ -496,6 +500,10 @@ void KScheduler::Unload(KernelCore& kernel, KThread* thread) {
 
     // Check if the thread is terminated by checking the DPC flags.
     if ((thread->GetStackParameters().dpc_flags & static_cast<u32>(DpcFlag::Terminated)) == 0) {
+        // Some libc++ lazily init mutex
+        [[maybe_unused]] auto const can_lock = thread->m_context_guard.try_lock();
+        DEBUG_ASSERT(!can_lock);
+
         // The thread isn't terminated, so we want to unlock it.
         thread->m_context_guard.unlock();
     }

src/core/hle/kernel/k_slab_heap.h

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
@@ -12,7 +12,6 @@
 #include "common/atomic_ops.h"
 #include "common/common_funcs.h"
 #include "common/common_types.h"
-#include "common/spin_lock.h"
 
 namespace Kernel {
 
@@ -30,7 +29,7 @@ public:
     };
 
 public:
-    constexpr KSlabHeapImpl() = default;
+    KSlabHeapImpl() = default;
 
     void Initialize() {
         ASSERT(m_head == nullptr);
@@ -68,7 +67,7 @@ public:
 
 private:
     std::atomic<Node*> m_head{};
-    Common::SpinLock m_lock;
+    std::mutex m_lock;
 };
 
 } // namespace impl

src/core/hle/kernel/k_thread.h

@@ -19,7 +19,6 @@
 
 #include "common/intrusive_red_black_tree.h"
 #include "common/scratch_buffer.h"
-#include "common/spin_lock.h"
 #include "core/arm/arm_interface.h"
 #include "core/hle/kernel/k_affinity_mask.h"
 #include "core/hle/kernel/k_light_lock.h"
@@ -920,7 +919,7 @@ private:
     bool m_resource_limit_release_hint{};
     bool m_is_kernel_address_key{};
     StackParameters m_stack_parameters{};
-    Common::SpinLock m_context_guard{};
+    std::mutex m_context_guard{};
 
     // For emulation
     std::shared_ptr<Common::Fiber> m_host_context{};

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

@@ -23,6 +23,12 @@ constexpr std::size_t profile_username_size{32};
 using ProfileUsername = std::array<u8, profile_username_size>;
 using UserIDArray = std::array<Common::UUID, MAX_USERS>;
 
+// This is nn::account::Uid
+struct Uid {
+    std::array<u8, 0x10> unk0;
+};
+static_assert(sizeof(Uid) == 0x10);
+
 /// Contains extra data related to a user.
 /// TODO: RE this structure
 struct UserData {

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

@@ -29,6 +29,7 @@
 #include "core/hle/service/am/frontend/applet_web_browser.h"
 #include "core/hle/service/am/frontend/applets.h"
 #include "core/hle/service/am/service/storage.h"
+#include "core/hle/service/am/window_system.h"
 #include "core/hle/service/sm/sm.h"
 
 namespace Service::AM::Frontend {
@@ -72,10 +73,16 @@ void FrontendApplet::PushInteractiveOutData(std::shared_ptr<IStorage> storage) {
 
 void FrontendApplet::Exit() {
     auto applet_ = applet.lock();
-
-    std::scoped_lock lk{applet_->lock};
-    applet_->is_completed = true;
-    applet_->state_changed_event.Signal(system.Kernel());
+    {
+        std::scoped_lock lk{applet_->lock};
+        applet_->is_completed = true;
+        applet_->state_changed_event.Signal(system.Kernel());
+    }
+    if (auto caller_applet = applet_->caller_applet.lock()) {
+        std::scoped_lock lk{caller_applet->lock};
+        std::erase(caller_applet->child_applets, applet_);
+    }
+    if (auto* window_system = system.GetAppletManager().GetWindowSystem()) window_system->RequestUpdate();
 }
 
 FrontendAppletSet::FrontendAppletSet() = default;

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

@@ -92,6 +92,13 @@ public:
         }
     }
 
+    void RequestFocusStateChangedNotification(Kernel::KernelCore& kernel) {
+        if (m_focus_state_changed_notification_enabled) {
+            m_has_focus_state_changed = true;
+            this->SignalSystemEventIfNeeded(kernel);
+        }
+    }
+
     void OnOperationAndPerformanceModeChanged(Kernel::KernelCore& kernel);
 
 public:

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

@@ -347,21 +347,22 @@ Result IApplicationFunctions::NotifyRunning(Out<bool> out_became_running) {
 
 Result IApplicationFunctions::GetPseudoDeviceId(Out<Common::UUID> out_pseudo_device_id) {
     LOG_WARNING(Service_AM, "(stubbed)");
-    R_UNLESS(out_pseudo_device_id, ResultUnknown);
+    R_UNLESS(out_pseudo_device_id != nullptr, ResultUnknown);
 
     // This should be hashed with the device specific hash
     // for now this will do
     const auto res = FileSys::PatchManager::GetMetadataFromBaseOrUpdate(system, m_applet->program_id);
-    u8 hash[EVP_MAX_MD_SIZE];
+    R_UNLESS(res.first != nullptr, ResultUnknown);
+    std::array<u8, EVP_MAX_MD_SIZE> hash;
     unsigned int hash_len = 0;
     auto const seed = res.first->raw.seed_for_pseudo_device_id;
     EVP_MD_CTX *ctx = EVP_MD_CTX_new();
     auto const algorithm = EVP_sha1();
     EVP_DigestInit_ex(ctx, algorithm, nullptr);
     EVP_DigestUpdate(ctx, &seed, sizeof(seed));
-    EVP_DigestFinal_ex(ctx, hash, &hash_len);
+    EVP_DigestFinal_ex(ctx, hash.data(), &hash_len);
     EVP_MD_CTX_free(ctx);
-    *out_pseudo_device_id = Common::UUID::MakeRFC4122V5(std::span<u8, 20>{hash, std::size(hash)});
+    *out_pseudo_device_id = Common::UUID::MakeRFC4122V5(std::span<u8, 16>{hash.begin(), hash.begin() + 16});
     R_SUCCEED();
 }
 

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

@@ -164,14 +164,14 @@ Result ILibraryAppletAccessor::PushInData(SharedPointer<IStorage> storage) {
 Result ILibraryAppletAccessor::PopOutData(Out<SharedPointer<IStorage>> out_storage) {
     LOG_DEBUG(Service_AM, "called");
 
-    if (auto caller_applet = m_applet->caller_applet.lock(); caller_applet) {
-        caller_applet->lifecycle_manager.GetSystemEvent().Signal(system.Kernel());
-        caller_applet->lifecycle_manager.RequestResumeNotification();
-        caller_applet->lifecycle_manager.GetSystemEvent().Clear(system.Kernel());
-        caller_applet->lifecycle_manager.UpdateRequestedFocusState();
-    }
-
     R_TRY(m_broker->GetOutData().Pop(system.Kernel(), out_storage.Get()));
+    if (auto caller_applet = m_applet->caller_applet.lock(); caller_applet) {
+        std::scoped_lock lk{caller_applet->lock};
+        const bool focus_state_changed = caller_applet->lifecycle_manager.UpdateRequestedFocusState();
+        const bool is_front_app = m_applet->frontend && caller_applet->lifecycle_manager.IsApplication();
+        if (focus_state_changed) caller_applet->lifecycle_manager.SignalSystemEventIfNeeded(system.Kernel());
+        else if (is_front_app) caller_applet->lifecycle_manager.RequestFocusStateChangedNotification(system.Kernel());
+    }
 
     if (m_applet->applet_id == AppletId::ProfileSelect && *out_storage) {
         auto impl = (*out_storage)->GetImpl();

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

@@ -122,7 +122,10 @@ std::shared_ptr<ILibraryAppletAccessor> CreateGuestApplet(Core::System& system,
         auto broker = std::make_shared<AppletDataBroker>(system);
         applet->caller_applet = caller_applet;
         applet->caller_applet_broker = broker;
-        caller_applet->child_applets.push_back(applet);
+        {
+            std::scoped_lock lk{caller_applet->lock};
+            caller_applet->child_applets.push_back(applet);
+        }
         window_system.TrackApplet(applet, false);
         return std::make_shared<ILibraryAppletAccessor>(system, broker, applet);
     }
@@ -148,10 +151,10 @@ std::shared_ptr<ILibraryAppletAccessor> CreateFrontendApplet(Core::System& syste
     applet->caller_applet = caller_applet;
     applet->caller_applet_broker = storage;
     applet->frontend = system.GetFrontendAppletHolder().GetApplet(applet, applet_id, mode);
-    caller_applet->child_applets.push_back(applet);
-
-    window_system.TrackApplet(applet, false);
-
+    {
+        std::scoped_lock lk{caller_applet->lock};
+        caller_applet->child_applets.push_back(applet);
+    }
     return std::make_shared<ILibraryAppletAccessor>(system, storage, applet);
 }
 

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

@@ -154,6 +154,9 @@ FSP_SRV::FSP_SRV(Core::System& system_)
         {720, nullptr, "AbandonAccessFailure"},
         {800, nullptr, "GetAndClearFileSystemProxyErrorInfo"},
         {810, nullptr, "RegisterProgramIndexMapInfo"},
+        {820, nullptr, "GetContentStorageInfoIndex"},
+        {830, nullptr, "EncryptStreamPlaySaveData"},
+        {831, nullptr, "DecryptStreamPlaySaveData"},
         {1000, nullptr, "SetBisRootForHost"},
         {1001, nullptr, "SetSaveDataSize"},
         {1002, nullptr, "SetSaveDataRootPath"},

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

@@ -121,7 +121,7 @@ IHidSystemServer::IHidSystemServer(Core::System& system_, std::shared_ptr<Resour
         {547, nullptr, "GetAllowedBluetoothLinksCount"},
         {548, &IHidSystemServer::GetRegisteredDevices, "GetRegisteredDevices"},
         {549, nullptr, "GetConnectableRegisteredDevices"},
-        {551, nullptr, "GetRegisteredDevicesForControllerSupport"}, //20.0.0+
+        {551, &IHidSystemServer::GetRegisteredDevices, "GetRegisteredDevicesForControllerSupport"}, //20.0.0+ //mocked via 548 for Diablo 3 (at least)
         {700, nullptr, "ActivateUniquePad"},
         {702, &IHidSystemServer::AcquireUniquePadConnectionEventHandle, "AcquireUniquePadConnectionEventHandle"},
         {703, &IHidSystemServer::GetUniquePadIds, "GetUniquePadIds"},
@@ -758,7 +758,7 @@ void IHidSystemServer::AcquireDeviceRegisteredEventForControllerSupport(HLEReque
 }
 
 void IHidSystemServer::GetRegisteredDevices(HLERequestContext& ctx) {
-    LOG_WARNING(Service_HID, "(STUBBED) called");
+    LOG_WARNING(Service_HID, "(STUBBED) called, command={}", ctx.GetCommand()); //548 or 551
 
     struct RegisterData {
         std::array<u8, 0x68> data;

src/core/hle/service/ipc_helpers.h

@@ -22,6 +22,7 @@
 
 namespace IPC {
 
+constexpr Result ResultNotSupported{ErrorModule::HIPC, 1};
 constexpr Result ResultSessionClosed{ErrorModule::HIPC, 301};
 
 struct ResponseBuilder {

src/core/hle/service/jit/jit_context.cpp

@@ -71,17 +71,14 @@ public:
     void InstructionSynchronizationBarrierRaised() override {
         last_code_addr = u64(-1); //reset back, force refetch
     }
-    u8 MemoryRead8(u64 vaddr) override {
-        return ReadMemory<u8>(vaddr);
-    }
-    u16 MemoryRead16(u64 vaddr) override {
-        return ReadMemory<u16>(vaddr);
-    }
-    u32 MemoryRead32(u64 vaddr) override {
-        return ReadMemory<u32>(vaddr);
-    }
-    u64 MemoryRead64(u64 vaddr) override {
-        return ReadMemory<u64>(vaddr);
+    u64 MemoryRead(u64 vaddr, size_t size) override {
+        switch (size) {
+        case sizeof(u64): return ReadMemory<u64>(vaddr);
+        case sizeof(u32): return ReadMemory<u32>(vaddr);
+        case sizeof(u16): return ReadMemory<u16>(vaddr);
+        case sizeof(u8): return ReadMemory<u8>(vaddr);
+        default: UNREACHABLE();
+        }
     }
     u128 MemoryRead128(u64 vaddr) override {
         return ReadMemory<u128>(vaddr);
@@ -89,22 +86,19 @@ public:
     std::string MemoryReadCString(u64 vaddr) {
         std::string result{};
         u8 next;
-        while ((next = MemoryRead8(vaddr++)) != 0)
+        while ((next = u8(MemoryRead(vaddr++, sizeof(u8)))) != 0)
             result += char(next);
         return result;
     }
 
-    void MemoryWrite8(u64 vaddr, u8 value) override {
-        WriteMemory<u8>(vaddr, value);
-    }
-    void MemoryWrite16(u64 vaddr, u16 value) override {
-        WriteMemory<u16>(vaddr, value);
-    }
-    void MemoryWrite32(u64 vaddr, u32 value) override {
-        WriteMemory<u32>(vaddr, value);
-    }
-    void MemoryWrite64(u64 vaddr, u64 value) override {
-        WriteMemory<u64>(vaddr, value);
+    void MemoryWrite(u64 vaddr, u64 value, size_t size) override {
+        switch (size) {
+        case sizeof(u64): WriteMemory<u64>(vaddr, u64(value)); break;
+        case sizeof(u32): WriteMemory<u32>(vaddr, u32(value)); break;
+        case sizeof(u16): WriteMemory<u16>(vaddr, u16(value)); break;
+        case sizeof(u8): WriteMemory<u8>(vaddr, u8(value)); break;
+        default: UNREACHABLE();
+        }
     }
     void MemoryWrite128(u64 vaddr, u128 value) override {
         WriteMemory<u128>(vaddr, value);
@@ -193,14 +187,14 @@ public:
         // The loaded NRO file has ELF relocations that must be processed before it can run.
         // Normally this would be processed by RTLD, but in HLE context, we don't have
         // the linker available, so we have to do it ourselves.
-        const VAddr mod_offset{callbacks->MemoryRead32(4)};
-        if (callbacks->MemoryRead32(mod_offset) != Common::MakeMagic('M', 'O', 'D', '0'))
+        const VAddr mod_offset{callbacks->MemoryRead(4, sizeof(u32))};
+        if (callbacks->MemoryRead(mod_offset, sizeof(u32)) != Common::MakeMagic('M', 'O', 'D', '0'))
             return false;
 
         // For more info about dynamic entries, see the ELF ABI specification:
         // https://refspecs.linuxbase.org/elf/gabi4+/ch5.dynamic.html
         // https://refspecs.linuxbase.org/elf/gabi4+/ch4.reloc.html
-        VAddr dynamic_offset{mod_offset + callbacks->MemoryRead32(mod_offset + 4)};
+        VAddr dynamic_offset{mod_offset + callbacks->MemoryRead(mod_offset + 4, sizeof(u32))};
         VAddr rela_dyn = 0, relr_dyn = 0;
         size_t num_rela = 0, num_relr = 0;
         while (true) {
@@ -222,8 +216,8 @@ public:
         for (size_t i = 0; i < num_rela; i++) {
             const auto rela{callbacks->ReadMemory<Elf64_Rela>(rela_dyn + i * sizeof(Elf64_Rela))};
             if (Elf64RelType(rela.r_info) == ElfAArch64Relative) {
-                const VAddr contents{callbacks->MemoryRead64(rela.r_offset)};
-                callbacks->MemoryWrite64(rela.r_offset, contents + rela.r_addend);
+                const VAddr contents{callbacks->MemoryRead(rela.r_offset, sizeof(u64))};
+                callbacks->MemoryWrite(rela.r_offset, contents + rela.r_addend, sizeof(u64));
             }
         }
 
@@ -231,7 +225,7 @@ public:
         for (size_t i = 0; i < num_relr; i++) {
             const auto relr = callbacks->ReadMemory<Elf64_Relr>(relr_dyn + i * sizeof(Elf64_Relr));
             const auto incr = [&](VAddr where) {
-                callbacks->MemoryWrite64(where, callbacks->MemoryRead64(where) + relocbase);
+                callbacks->MemoryWrite(where, callbacks->MemoryRead(where, sizeof(u64)) + relocbase, sizeof(u64));
             };
             if ((relr & 1) == 0) {
                 // where pointer
@@ -294,7 +288,7 @@ public:
         if (argument_stack.size() > 8) {
             const VAddr new_sp = Common::AlignDown(top_of_stack - (argument_stack.size() - 8) * sizeof(u64), STACK_ALIGN);
             for (size_t i = 8; i < argument_stack.size(); i++)
-                callbacks->MemoryWrite64(new_sp + (i - 8) * sizeof(u64), argument_stack[i]);
+                callbacks->MemoryWrite(new_sp + (i - 8) * sizeof(u64), argument_stack[i], sizeof(u64));
             jit->SetSP(new_sp);
         }
         // Reset the call state for the next invocation
@@ -385,17 +379,17 @@ void DynarmicCallbacks64::CallSVC(u32 swi) {
 
         if (dest < src) {
             for (size_t i = 0; i < n; i++)
-                MemoryWrite8(dest + i, MemoryRead8(src + i));
+                MemoryWrite(dest + i, u8(MemoryRead(src + i, sizeof(u8))), sizeof(u8));
         } else {
             for (size_t i = n; i > 0; i--)
-                MemoryWrite8(dest + i - 1, MemoryRead8(src + i - 1));
+                MemoryWrite(dest + i - 1, u8(MemoryRead(src + i - 1, sizeof(u8))), sizeof(u8));
         }
     } else if (pc == parent.helpers[size_t(HelperFn::Memset)]) {
         const VAddr dest{parent.jit->GetRegister(0)};
         const u64 c{parent.jit->GetRegister(1)};
         const size_t n{parent.jit->GetRegister(2)};
         for (size_t i = 0; i < n; i++)
-            MemoryWrite8(dest + i, u8(c));
+            MemoryWrite(dest + i, u8(c), sizeof(u8));
     } else if (pc == parent.helpers[size_t(HelperFn::Resolve)]) {
         // X0 contains a char* for a symbol to resolve
         const auto name{MemoryReadCString(parent.jit->GetRegister(0))};
@@ -422,7 +416,7 @@ void DynarmicCallbacks64::CallSVC(u32 swi) {
 }
 
 void DynarmicCallbacks64::ExceptionRaised(u64 pc, Dynarmic::A64::Exception exception) {
-    auto const inst = MemoryRead32(pc);
+    auto const inst = MemoryRead(pc, sizeof(u32));
     LOG_CRITICAL(Service_JIT, "{} PC @ {:08x}, data = {:08x}", exception, pc, inst);
     parent.jit->HaltExecution();
 }

src/core/hle/service/ngc/ngc.cpp

@@ -6,10 +6,16 @@
 
 #include "common/string_util.h"
 #include "core/core.h"
+#include "core/hle/kernel/k_client_session.h"
+#include "core/hle/result.h"
+#include "core/hle/service/acc/profile_manager.h"
+#include "core/hle/service/cmif_types.h"
+#include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/ngc/ngc.h"
 #include "core/hle/service/server_manager.h"
 #include "core/hle/service/service.h"
+#include "frontend_common/firmware_manager.h"
 
 namespace Service::NGC {
 
@@ -166,12 +172,123 @@ public:
     }
 };
 
+struct SaveDataHandle {
+    u64 unk0;
+};
+static_assert(sizeof(SaveDataHandle) == 0x08);
+
+class IUserShimScopedObject final : public ServiceFramework<IUserShimScopedObject> {
+public:
+    explicit IUserShimScopedObject(Core::System& system_) : ServiceFramework(system_, "IUserShimScopedObject") {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {450, nullptr, "InitializeForSaveData"},
+            {451, nullptr, "FinalizeForSaveData"},
+            {452, D<&IUserShimScopedObject::OpenSaveData>, "OpenSaveData"},
+            {453, nullptr, "CloseSaveData"},
+            {454, D<&IUserShimScopedObject::ReadSaveSlot>, "ReadSaveSlot"},
+            {455, D<&IUserShimScopedObject::WriteSaveSlot>, "WriteSaveSlot"},
+            {456, nullptr, "FlushSaveSlot"},
+            {457, nullptr, "CommitSaveData"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+
+    Result OpenSaveData(Account::Uid unk0, Out<SaveDataHandle> unk1) {
+        LOG_WARNING(Service_NGC, "stubbed");
+        R_THROW(IPC::ResultNotSupported);
+    }
+
+    Result ReadSaveSlot(s32 offset, SaveDataHandle handle, OutBuffer<BufferAttr_HipcAutoSelect> out_data, Out<u32> out_size) {
+        LOG_WARNING(Service_NGC, "stubbed");
+        R_THROW(IPC::ResultNotSupported);
+    }
+
+    Result WriteSaveSlot(s32 offset, SaveDataHandle handle, InBuffer<BufferAttr_HipcAutoSelect> out_data) {
+        LOG_WARNING(Service_NGC, "stubbed");
+        // to implement
+        R_SUCCEED();
+    }
+};
+
+class IUserService final : public ServiceFramework<IUserService> {
+public:
+    explicit IUserService(Core::System& system_) : ServiceFramework(system_, "stpl:u") {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0 , D<&IUserService::Cmd0>, "Cmd0"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+    Result Cmd0(u32 unk0, OutInterface<IUserShimScopedObject> out_interface) {
+        LOG_WARNING(Service_NGC, "stubbed");
+        *out_interface = std::make_shared<IUserShimScopedObject>(system);
+        R_SUCCEED();
+    }
+};
+
+class ISystemShimScopedObject final : public ServiceFramework<ISystemShimScopedObject> {
+public:
+    explicit ISystemShimScopedObject(Core::System& system_) : ServiceFramework(system_, "ISystemShimScopedObject") {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {106, nullptr, "Cmd106"},
+            {107, nullptr, "Cmd107"},
+            {108, D<&ISystemShimScopedObject::Cmd108>, "Cmd108"},
+            {207, nullptr, "Cmd207"},
+            {208, D<&ISystemShimScopedObject::Cmd208>, "Cmd208"},
+            {209, nullptr, "Cmd209"},
+            {210, nullptr, "Cmd210"},
+            {211, nullptr, "Cmd211"},
+            {212, nullptr, "Cmd212"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+
+    Result Cmd108() {
+        LOG_WARNING(Service_NGC, "stubbed");
+        R_THROW(IPC::ResultNotSupported);
+    }
+
+    Result Cmd208(Out<std::array<u8, 0x20>> unk0) {
+        LOG_WARNING(Service_NGC, "stubbed");
+        R_THROW(IPC::ResultNotSupported);
+    }
+};
+
+class ISystemService final : public ServiceFramework<ISystemService> {
+public:
+    explicit ISystemService(Core::System& system_) : ServiceFramework(system_, "stpl:sys") {
+        // clang-format off
+        static const FunctionInfo functions[] = {
+            {0 , D<&ISystemService::Cmd0>, "Cmd0"},
+        };
+        // clang-format on
+        RegisterHandlers(functions);
+    }
+    Result Cmd0(OutInterface<ISystemShimScopedObject> out_interface) {
+        LOG_WARNING(Service_NGC, "stubbed");
+        *out_interface = std::make_shared<ISystemShimScopedObject>(system);
+        R_SUCCEED();
+    }
+};
+
 void LoopProcess(Core::System& system) {
     auto server_manager = std::make_unique<ServerManager>(system);
 
     server_manager->RegisterNamedService("ngct:u", std::make_shared<IService>(system), 4);
     server_manager->RegisterNamedService("ngct:s", std::make_shared<IServiceWithManagementApi>(system), 4);
     server_manager->RegisterNamedService("ngc:u", std::make_shared<NgcServiceImpl>(system), 4);
+
+    // +23.0.0
+    if (FirmwareManager::GetFirmwareVersion(system).first.major >= 23) {
+        server_manager->RegisterNamedService("stpl:u", std::make_shared<IUserService>(system), 4);
+        server_manager->RegisterNamedService("stpl:sys", std::make_shared<ISystemService>(system), 4);
+    }
+
     ServerManager::RunServer(std::move(server_manager));
 }
 

src/core/hle/service/ns/application_manager_interface.h

@@ -7,7 +7,7 @@
 #pragma once
 
 #include "core/hle/service/cmif_types.h"
-#include "core/hle/service/ns/i_async_result.h"
+#include "core/hle/service/ns/async_result.h"
 #include "core/hle/service/ns/language.h"
 #include "core/hle/service/ns/ns_types.h"
 #include "core/hle/service/os/event.h"

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

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "core/hle/service/cmif_serialization.h"
-#include "core/hle/service/ns/i_async_result.h"
+#include "core/hle/service/ns/async_result.h"
 
 #include <cstring>
 
@@ -32,4 +32,4 @@ Result IAsyncResult::Cancel() {
     R_SUCCEED();
 }
 
-} // namespace Service::NS
+} // namespace Service::NS

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

@@ -311,27 +311,30 @@ void IReadOnlyApplicationControlDataInterface::ListApplicationIcon(HLERequestCon
         // u64 - app count
         memory.WriteBlock(t_mem_address + out_length, &app_count, sizeof(u64));
         out_length += sizeof(u64);
+        ASSERT(out_length <= t_mem->GetSize());
         // [list of u64] - size of icons
         for (size_t i = 0; i < app_count; ++i) {
             const u64 app_id = app_ids_buffer[i];
             const FileSys::PatchManager pm{app_id, system.GetFileSystemController(), system.GetContentProvider()};
-            const auto control = pm.GetControlMetadata();
-            u64 full_size = control.second->GetSize();
-            memory.WriteBlock(t_mem_address + out_length, &full_size, sizeof(u64));
+            if (const auto control = pm.GetControlMetadata(); control.second) {
+                u64 full_size = control.second->GetSize();
+                memory.WriteBlock(t_mem_address + out_length, &full_size, sizeof(u64));
+            }
             out_length += sizeof(u64);
+            ASSERT(out_length <= t_mem->GetSize());
         }
         // [list of raw icon data]
-        std::vector<u8> full_icon_data;
         for (size_t i = 0; i < app_count; ++i) {
             const u64 app_id = app_ids_buffer[i];
             const FileSys::PatchManager pm{app_id, system.GetFileSystemController(), system.GetContentProvider()};
-            const auto control = pm.GetControlMetadata();
-            auto const full_size = control.second->GetSize();
-            if (full_size > 0) {
-                full_icon_data.resize(full_size);
-                control.second->Read(full_icon_data.data(), full_size, 0);
-                memory.WriteBlock(t_mem_address + out_length, full_icon_data.data(), full_size);
-                out_length += full_size;
+            if (const auto control = pm.GetControlMetadata(); control.second) {
+                if (auto const full_size = control.second->GetSize(); full_size > 0) {
+                    std::vector<u8> full_icon_data(full_size);
+                    control.second->Read(full_icon_data.data(), full_size, 0);
+                    memory.WriteBlock(t_mem_address + out_length, full_icon_data.data(), full_size);
+                    out_length += full_size;
+                    ASSERT(out_length <= t_mem->GetSize());
+                }
             }
         }
     }
@@ -345,6 +348,12 @@ void IReadOnlyApplicationControlDataInterface::ListApplicationIcon(HLERequestCon
 void IReadOnlyApplicationControlDataInterface::ListApplicationTitle(HLERequestContext& ctx) {
     const auto app_ids_buffer = ctx.ReadBuffer();
     const size_t app_count = app_ids_buffer.size() / sizeof(u64);
+
+    std::vector<u64> application_ids(app_count);
+    if (app_count > 0) {
+        std::memcpy(application_ids.data(), app_ids_buffer.data(), app_count * sizeof(u64));
+    }
+
     auto t_mem_obj = ctx.GetObjectFromHandle<Kernel::KTransferMemory>(ctx.GetCopyHandle(0));
     auto* t_mem = t_mem_obj.GetPointerUnsafe();
     constexpr size_t title_entry_size = sizeof(FileSys::LanguageEntry);
@@ -354,8 +363,9 @@ void IReadOnlyApplicationControlDataInterface::ListApplicationTitle(HLERequestCo
         auto& memory = system.ApplicationMemory();
         const auto t_mem_address = t_mem->GetSourceAddress();
         for (size_t i = 0; i < app_count; ++i) {
-            const u64 app_id = app_ids_buffer[i];
-            const FileSys::PatchManager pm{app_id, system.GetFileSystemController(), system.GetContentProvider()};
+            const u64 app_id = application_ids[i];
+            const FileSys::PatchManager pm{app_id, system.GetFileSystemController(),
+                                           system.GetContentProvider()};
             const auto control = pm.GetControlMetadata();
             FileSys::LanguageEntry entry{};
             if (control.first != nullptr) {

src/core/hle/service/ssl/ssl.cpp

@@ -48,6 +48,12 @@ enum class OptionType : u32 {
     EnableAlpn = 3,
 };
 
+// This is nn::ssl::sf::RenegotiationMode
+enum RenegotiationMode : u32 {
+    None = 0, ///< None
+    Secure = 1, ///< Secure
+};
+
 // This is nn::ssl::sf::SslVersion
 struct SslVersion {
     union {
@@ -75,34 +81,34 @@ public:
           shared_data{shared_data_in}, backend{std::move(backend_in)} {
         // clang-format off
         static const FunctionInfo functions[] = {
-            {0, &ISslConnection::SetSocketDescriptor, "SetSocketDescriptor"},
-            {1, &ISslConnection::SetHostName, "SetHostName"},
-            {2, &ISslConnection::SetVerifyOption, "SetVerifyOption"},
-            {3, &ISslConnection::SetIoMode, "SetIoMode"},
-            {4, nullptr, "GetSocketDescriptor"},
-            {5, nullptr, "GetHostName"},
+            {0, D<&ISslConnection::SetSocketDescriptor>, "SetSocketDescriptor"},
+            {1, D<&ISslConnection::SetHostName>, "SetHostName"},
+            {2, D<&ISslConnection::SetVerifyOption>, "SetVerifyOption"},
+            {3, D<&ISslConnection::SetIoMode>, "SetIoMode"},
+            {4, D<&ISslConnection::GetSocketDescriptor>, "GetSocketDescriptor"},
+            {5, D<&ISslConnection::GetHostName>, "GetHostName"},
             {6, nullptr, "GetVerifyOption"},
-            {7, nullptr, "GetIoMode"},
-            {8, &ISslConnection::DoHandshake, "DoHandshake"},
+            {7, D<&ISslConnection::GetIoMode>, "GetIoMode"},
+            {8, D<&ISslConnection::DoHandshake>, "DoHandshake"},
             {9, &ISslConnection::DoHandshakeGetServerCert, "DoHandshakeGetServerCert"},
-            {10, &ISslConnection::Read, "Read"},
-            {11, &ISslConnection::Write, "Write"},
-            {12, &ISslConnection::Pending, "Pending"},
-            {13, nullptr, "Peek"},
-            {14, nullptr, "Poll"},
-            {15, nullptr, "GetVerifyCertError"},
-            {16, nullptr, "GetNeededServerCertBufferSize"},
-            {17, &ISslConnection::SetSessionCacheMode, "SetSessionCacheMode"},
-            {18, nullptr, "GetSessionCacheMode"},
-            {19, nullptr, "FlushSessionCache"},
-            {20, nullptr, "SetRenegotiationMode"},
-            {21, nullptr, "GetRenegotiationMode"},
-            {22, &ISslConnection::SetOption, "SetOption"},
-            {23, &ISslConnection::GetOption, "GetOption"},
+            {10, D<&ISslConnection::Read>, "Read"},
+            {11, D<&ISslConnection::Write>, "Write"},
+            {12, D<&ISslConnection::Pending>, "Pending"},
+            {13, D<&ISslConnection::Peek>, "Peek"},
+            {14, D<&ISslConnection::Poll>, "Poll"},
+            {15, D<&ISslConnection::GetVerifyCertError>, "GetVerifyCertError"},
+            {16, D<&ISslConnection::GetNeededServerCertBufferSize>, "GetNeededServerCertBufferSize"},
+            {17, D<&ISslConnection::SetSessionCacheMode>, "SetSessionCacheMode"},
+            {18, D<&ISslConnection::GetSessionCacheMode>, "GetSessionCacheMode"},
+            {19, D<&ISslConnection::FlushSessionCache>, "FlushSessionCache"},
+            {20, D<&ISslConnection::SetRenegotiationMode>, "SetRenegotiationMode"},
+            {21, D<&ISslConnection::GetRenegotiationMode>, "GetRenegotiationMode"},
+            {22, D<&ISslConnection::SetOption>, "SetOption"},
+            {23, D<&ISslConnection::GetOption>, "GetOption"},
             {24, nullptr, "GetVerifyCertErrors"},
             {25, nullptr, "GetCipherInfo"},
-            {26, &ISslConnection::SetNextAlpnProto, "SetNextAlpnProto"},
-            {27, &ISslConnection::GetNextAlpnProto, "GetNextAlpnProto"},
+            {26, D<&ISslConnection::SetNextAlpnProto>, "SetNextAlpnProto"},
+            {27, D<&ISslConnection::GetNextAlpnProto>, "GetNextAlpnProto"},
             {28, nullptr, "SetDtlsSocketDescriptor"},
             {29, nullptr, "GetDtlsHandshakeTimeout"},
             {30, nullptr, "SetPrivateOption"},
@@ -141,80 +147,6 @@ public:
     }
 
 private:
-    SslVersion ssl_version;
-    std::shared_ptr<SslContextSharedData> shared_data;
-    std::unique_ptr<SSLConnectionBackend> backend;
-    std::optional<int> fd_to_close;
-    bool do_not_close_socket = false;
-    bool get_server_cert_chain = false;
-    bool skip_default_verify = false;
-    bool enable_alpn = false;
-    std::shared_ptr<Network::SocketBase> socket;
-    std::vector<u8> next_alpn_proto;
-    bool did_handshake = false;
-    u32 verify_option = 0;
-
-    Result SetSocketDescriptorImpl(s32* out_fd, s32 fd) {
-        LOG_DEBUG(Service_SSL, "called, fd={}", fd);
-        ASSERT(!did_handshake);
-        auto bsd = system.ServiceManager().GetService<Service::Sockets::BSD_USA>("bsd:u");
-        ASSERT_OR_EXECUTE(bsd, { return ResultInternalError; });
-
-        auto const res_v = bsd->DuplicateSocketImpl(fd);
-        if (auto *res = std::get_if<s32>(&res_v)) {
-            const s32 duplicated_fd = *res;
-            if (do_not_close_socket) {
-                *out_fd = duplicated_fd;
-            } else {
-                *out_fd = -1;
-                fd_to_close = duplicated_fd;
-            }
-            std::optional<std::shared_ptr<Network::SocketBase>> sock = bsd->GetSocket(duplicated_fd);
-            if (!sock.has_value()) {
-                LOG_ERROR(Service_SSL, "invalid socket fd {} after duplication", duplicated_fd);
-                return ResultInvalidSocket;
-            }
-            socket = std::move(*sock);
-            backend->SetSocket(socket);
-            return ResultSuccess;
-        }
-        LOG_ERROR(Service_SSL, "Failed to duplicate socket with fd {}", fd);
-        return ResultInvalidSocket;
-    }
-
-    Result SetHostNameImpl(const std::string& hostname) {
-        LOG_DEBUG(Service_SSL, "called. hostname={}", hostname);
-        ASSERT(!did_handshake);
-        return backend->SetHostName(hostname);
-    }
-
-    Result SetVerifyOptionImpl(u32 option) {
-        ASSERT(!did_handshake);
-        LOG_DEBUG(Service_SSL, "called. option={} (forcing 0)", option);
-        verify_option = 0;
-        backend->SetVerifyOption(0);
-        return ResultSuccess;
-    }
-
-    Result SetIoModeImpl(u32 input_mode) {
-        auto mode = static_cast<IoMode>(input_mode);
-        ASSERT(mode == IoMode::Blocking || mode == IoMode::NonBlocking);
-        ASSERT_OR_EXECUTE(socket, { return ResultNoSocket; });
-
-        const bool non_block = mode == IoMode::NonBlocking;
-        const Network::Errno error = socket->SetNonBlock(non_block);
-        if (error != Network::Errno::SUCCESS) {
-            LOG_ERROR(Service_SSL, "Failed to set native socket non-block flag to {}", non_block);
-        }
-        return ResultSuccess;
-    }
-
-    Result SetSessionCacheModeImpl(u32 mode) {
-        ASSERT(!did_handshake);
-        LOG_WARNING(Service_SSL, "(STUBBED) called. value={}", mode);
-        return ResultSuccess;
-    }
-
     Result DoHandshakeImpl() {
         ASSERT_OR_EXECUTE(!did_handshake && socket, { return ResultNoSocket; });
         Result res = backend->DoHandshake();
@@ -234,19 +166,17 @@ private:
         };
         if (!get_server_cert_chain) {
             // Just return the first one, unencoded.
-            ASSERT_OR_EXECUTE_MSG(
-                !certs.empty(), { return {}; }, "Should be at least one server cert");
+            ASSERT_OR_EXECUTE_MSG(!certs.empty(), { return {}; }, "Should be at least one server cert");
             return certs[0];
         }
         std::vector<u8> ret;
-        Header header{0x4E4D684374726543, static_cast<u32>(certs.size()), 0};
+        Header header{0x4E4D684374726543, u32(certs.size()), 0};
         ret.insert(ret.end(), reinterpret_cast<u8*>(&header), reinterpret_cast<u8*>(&header + 1));
         size_t data_offset = sizeof(Header) + certs.size() * sizeof(EntryHeader);
         for (auto& cert : certs) {
-            EntryHeader entry_header{static_cast<u32>(cert.size()), static_cast<u32>(data_offset)};
+            EntryHeader entry_header{u32(cert.size()), u32(data_offset)};
             data_offset += cert.size();
-            ret.insert(ret.end(), reinterpret_cast<u8*>(&entry_header),
-                       reinterpret_cast<u8*>(&entry_header + 1));
+            ret.insert(ret.end(), reinterpret_cast<u8*>(&entry_header), reinterpret_cast<u8*>(&entry_header + 1));
         }
         for (auto& cert : certs) {
             ret.insert(ret.end(), cert.begin(), cert.end());
@@ -254,65 +184,77 @@ private:
         return ret;
     }
 
-    Result ReadImpl(std::vector<u8>* out_data) {
-        ASSERT_OR_EXECUTE(did_handshake, { return ResultInternalError; });
-        size_t actual_size{};
-        Result res = backend->Read(&actual_size, *out_data);
-        if (res != ResultSuccess) {
-            return res;
+    Result SetSocketDescriptor(s32 in_fd, Out<s32> out_fd) {
+        LOG_DEBUG(Service_SSL, "called, fd={}", in_fd);
+        ASSERT(!did_handshake);
+        auto bsd = system.ServiceManager().GetService<Service::Sockets::BSD_USA>("bsd:u");
+        ASSERT_OR_EXECUTE(bsd, { return ResultInternalError; });
+
+        auto const res_v = bsd->DuplicateSocketImpl(in_fd);
+        if (auto *res = std::get_if<s32>(&res_v)) {
+            const s32 dup_fd = *res;
+            *out_fd = do_not_close_socket ? dup_fd : -1;
+            if (!do_not_close_socket)
+                fd_to_close = dup_fd;
+            auto const sock = bsd->GetSocket(dup_fd);
+            if (!sock.has_value()) {
+                LOG_ERROR(Service_SSL, "invalid socket fd {} after duplication", dup_fd);
+                return ResultInvalidSocket;
+            }
+            socket = std::move(*sock);
+            backend->SetSocket(std::move(socket));
+            return ResultSuccess;
         }
-        out_data->resize(actual_size);
-        return res;
+        LOG_ERROR(Service_SSL, "Failed to duplicate socket with fd {}", in_fd);
+        return ResultInvalidSocket;
     }
 
-    Result WriteImpl(size_t* out_size, std::span<const u8> data) {
-        ASSERT_OR_EXECUTE(did_handshake, { return ResultInternalError; });
-        return backend->Write(out_size, data);
+    Result SetHostName(InBuffer<BufferAttr_HipcMapAlias> buf) {
+        auto const hostname = Common::StringFromBuffer(buf);
+        LOG_DEBUG(Service_SSL, "called. hostname={}", hostname);
+        ASSERT(!did_handshake);
+        return backend->SetHostName(hostname.c_str());
     }
 
-    Result PendingImpl(s32* out_pending) {
-        LOG_WARNING(Service_SSL, "(STUBBED) called.");
-        *out_pending = 0;
-        return ResultSuccess;
+    Result SetVerifyOption(u32 option) {
+        LOG_DEBUG(Service_SSL, "called. option={} (forcing 0)", option);
+        ASSERT(!did_handshake);
+        verify_option = 0;
+        backend->SetVerifyOption(0);
+        R_SUCCEED();
     }
 
-    void SetSocketDescriptor(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const s32 in_fd = rp.Pop<s32>();
-        s32 out_fd{-1};
-        const Result res = SetSocketDescriptorImpl(&out_fd, in_fd);
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(res);
-        rb.Push<s32>(out_fd);
+    Result SetIoMode(u32 input_mode) {
+        auto mode = IoMode(input_mode);
+        ASSERT(mode == IoMode::Blocking || mode == IoMode::NonBlocking);
+        R_UNLESS(socket, ResultNoSocket);
+        const bool non_block = mode == IoMode::NonBlocking;
+        const Network::Errno error = socket->SetNonBlock(non_block);
+        if (error != Network::Errno::SUCCESS) {
+            LOG_ERROR(Service_SSL, "Failed to set native socket non-block flag to {}", non_block);
+        }
+        R_SUCCEED();
     }
 
-    void SetHostName(HLERequestContext& ctx) {
-        const std::string hostname = Common::StringFromBuffer(ctx.ReadBuffer());
-        const Result res = SetHostNameImpl(hostname);
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(res);
+    Result GetSocketDescriptor(Out<u32> out_fd) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        *out_fd = uint32_t(socket->GetFD());
+        R_SUCCEED();
     }
 
-    void SetVerifyOption(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const u32 option = rp.Pop<u32>();
-        const Result res = SetVerifyOptionImpl(option);
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(res);
+    Result GetHostName(OutBuffer<BufferAttr_HipcMapAlias> data, Out<u32> out_size) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        ASSERT(!did_handshake);
+        return backend->GetHostName(std::span<u8>{data.begin(), data.end()}, out_size);
     }
 
-    void SetIoMode(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const u32 mode = rp.Pop<u32>();
-        const Result res = SetIoModeImpl(mode);
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(res);
+    Result GetIoMode(Out<u32> out_mode) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        R_SUCCEED();
     }
 
-    void DoHandshake(HLERequestContext& ctx) {
-        const Result res = DoHandshakeImpl();
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(res);
+    Result DoHandshake() {
+        return DoHandshakeImpl();
     }
 
     void DoHandshakeGetServerCert(HLERequestContext& ctx) {
@@ -351,131 +293,158 @@ private:
         rb.PushRaw(out);
     }
 
-    void Read(HLERequestContext& ctx) {
-        std::vector<u8> output_bytes(ctx.GetWriteBufferSize());
-        const Result res = ReadImpl(&output_bytes);
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(res);
-        if (res == ResultSuccess) {
-            rb.Push(static_cast<u32>(output_bytes.size()));
-            ctx.WriteBuffer(output_bytes);
-        } else {
-            rb.Push(static_cast<u32>(0));
-        }
+    Result Read(OutBuffer<BufferAttr_HipcMapAlias> data, Out<u32> out_size) {
+        R_UNLESS(did_handshake, ResultInternalError);
+        size_t tmp{};
+        auto const res = backend->Read(&tmp, data);
+        *out_size = u32(tmp);
+        return res;
     }
 
-    void Write(HLERequestContext& ctx) {
-        size_t write_size{0};
-        const Result res = WriteImpl(&write_size, ctx.ReadBuffer());
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(res);
-        rb.Push(static_cast<u32>(write_size));
+    Result Write(InBuffer<BufferAttr_HipcMapAlias> data, Out<u32> out_size) {
+        R_UNLESS(did_handshake, ResultInternalError);
+        size_t tmp{};
+        auto const res = backend->Write(&tmp, data);
+        *out_size = u32(tmp);
+        return res;
     }
 
-    void Pending(HLERequestContext& ctx) {
-        s32 pending_size{0};
-        const Result res = PendingImpl(&pending_size);
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(res);
-        rb.Push<s32>(pending_size);
+    Result Pending(Out<s32> out_pending_size) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        *out_pending_size = s32(backend->Pending());
+        R_SUCCEED();
     }
 
-    void SetSessionCacheMode(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const u32 mode = rp.Pop<u32>();
-        const Result res = SetSessionCacheModeImpl(mode);
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(res);
+    Result Peek(OutBuffer<BufferAttr_HipcMapAlias> data, Out<u32> out_size) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        size_t tmp{};
+        auto const res = backend->Peek(&tmp, data);
+        *out_size = u32(tmp);
+        return res;
     }
 
-    void SetOption(HLERequestContext& ctx) {
-        struct Parameters {
-            OptionType option;
-            s32 value;
-        };
-        static_assert(sizeof(Parameters) == 0x8, "Parameters is an invalid size");
-
-        IPC::RequestParser rp{ctx};
-        const auto parameters = rp.PopRaw<Parameters>();
-
-        switch (parameters.option) {
-        case OptionType::DoNotCloseSocket:
-            do_not_close_socket = static_cast<bool>(parameters.value);
-            break;
-        case OptionType::GetServerCertChain:
-            get_server_cert_chain = static_cast<bool>(parameters.value);
-            break;
-        case OptionType::SkipDefaultVerify:
-            skip_default_verify = static_cast<bool>(parameters.value);
-            break;
-        case OptionType::EnableAlpn:
-            enable_alpn = static_cast<bool>(parameters.value);
-            break;
-        default:
-            LOG_WARNING(Service_SSL, "Unknown option={}, value={}", parameters.option,
-                        parameters.value);
-        }
-
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ResultSuccess);
+    Result Poll(u32 in_pollevent, u32 timer, Out<u32> out_pollevent) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        R_SUCCEED();
     }
 
-    void GetOption(HLERequestContext& ctx) {
-        IPC::RequestParser rp{ctx};
-        const auto option = rp.PopRaw<OptionType>();
+    Result GetVerifyCertError() {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        R_SUCCEED();
+    }
 
-        u8 value = 0;
+    Result GetNeededServerCertBufferSize(Out<u32> out_needed_buffer_size) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        R_SUCCEED();
+    }
 
+    Result SetSessionCacheMode(u32 mode) {
+        LOG_WARNING(Service_SSL, "(STUBBED) called. value={}", mode);
+        R_UNLESS(!did_handshake, ResultInternalError);
+        R_SUCCEED();
+    }
+
+    Result GetSessionCacheMode(Out<u32> mode) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        R_UNLESS(!did_handshake, ResultInternalError);
+        R_SUCCEED();
+    }
+
+    Result FlushSessionCache() {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        R_UNLESS(!did_handshake, ResultInternalError);
+        R_SUCCEED();
+    }
+
+    Result SetRenegotiationMode(RenegotiationMode mode) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        backend->SetRenegotiationMode(u32(mode));
+        R_SUCCEED();
+    }
+
+    Result GetRenegotiationMode(Out<RenegotiationMode> mode) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        u32 tmp{};
+        auto const res = backend->GetRenegotiationMode(&tmp);
+        *mode = RenegotiationMode(tmp);
+        return res;
+    }
+
+    Result SetOption(OptionType option, s32 value) {
         switch (option) {
         case OptionType::DoNotCloseSocket:
-            value = static_cast<u8>(do_not_close_socket);
+            do_not_close_socket = bool(value);
             break;
         case OptionType::GetServerCertChain:
-            value = static_cast<u8>(get_server_cert_chain);
+            get_server_cert_chain = bool(value);
             break;
         case OptionType::SkipDefaultVerify:
-            value = static_cast<u8>(skip_default_verify);
+            skip_default_verify = bool(value);
             break;
         case OptionType::EnableAlpn:
-            value = static_cast<u8>(enable_alpn);
+            enable_alpn = bool(value);
             break;
         default:
-            LOG_WARNING(Service_SSL, "Unknown option={}", option);
-            value = 0;
+            LOG_WARNING(Service_SSL, "Unknown option={}, value={}", option, value);
+        }
+        R_SUCCEED();
+    }
+
+    Result GetOption(OptionType option, Out<u8> value) {
+        switch (option) {
+        case OptionType::DoNotCloseSocket:
+            *value = u8(do_not_close_socket);
+            break;
+        case OptionType::GetServerCertChain:
+            *value = u8(get_server_cert_chain);
+            break;
+        case OptionType::SkipDefaultVerify:
+            *value = u8(skip_default_verify);
+            break;
+        case OptionType::EnableAlpn:
+            *value = u8(enable_alpn);
+            break;
+        default:
+            LOG_WARNING(Service_SSL, "Unknown option={}", u32(option));
+            *value = 0;
             break;
         }
-
-        LOG_DEBUG(Service_SSL, "GetOption called, option={}, ret value={}", option, value);
-
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(ResultSuccess);
-        rb.Push<u8>(value);
+        LOG_DEBUG(Service_SSL, "GetOption called, option={}, ret value={}", u32(option), *value);
+        R_SUCCEED();
     }
 
-    void SetNextAlpnProto(HLERequestContext& ctx) {
-        const auto data = ctx.ReadBuffer(0);
-        next_alpn_proto.assign(data.begin(), data.end());
-
+    Result SetNextAlpnProto(InBuffer<BufferAttr_HipcMapAlias> data) {
+        auto const to_write = u32((std::min)(next_alpn_proto.size(), data.size()));
+        next_alpn_proto.assign(data.begin(), data.begin() + to_write);
         LOG_DEBUG(Service_SSL, "SetNextAlpnProto called, size={}", next_alpn_proto.size());
-
-        IPC::ResponseBuilder rb{ctx, 2};
-        rb.Push(ResultSuccess);
+        R_SUCCEED();
     }
 
-    void GetNextAlpnProto(HLERequestContext& ctx) {
-        const size_t writable = ctx.GetWriteBufferSize();
-        const size_t to_write = (std::min)(next_alpn_proto.size(), writable);
-
-        if (to_write != 0) {
-            ctx.WriteBuffer(std::span<const u8>(next_alpn_proto.data(), to_write));
-        }
-
-        LOG_DEBUG(Service_SSL, "GetNextAlpnProto called, size={}", to_write);
-
-        IPC::ResponseBuilder rb{ctx, 3};
-        rb.Push(ResultSuccess);
-        rb.Push<u32>(static_cast<u32>(to_write));
+    Result GetNextAlpnProto(OutBuffer<BufferAttr_HipcMapAlias> data, Out<u32> to_write) {
+        *to_write = u32((std::min)(next_alpn_proto.size(), data.size()));
+        next_alpn_proto.assign(data.begin(), data.begin() + *to_write);
+        LOG_DEBUG(Service_SSL, "GetNextAlpnProto called, size={}", *to_write);
+        R_SUCCEED();
     }
+
+    Result GetVerifyCertErrors(OutBuffer<BufferAttr_HipcMapAlias> unk0, Out<u32> unk1, Out<u32> unk2) {
+        LOG_WARNING(Service_SSL, "(STUBBED)");
+        R_SUCCEED();
+    }
+
+    SslVersion ssl_version;
+    std::shared_ptr<SslContextSharedData> shared_data;
+    std::unique_ptr<SSLConnectionBackend> backend;
+    std::optional<int> fd_to_close;
+    std::shared_ptr<Network::SocketBase> socket;
+    std::vector<u8> next_alpn_proto;
+    u32 verify_option = 0;
+
+    bool do_not_close_socket = false;
+    bool get_server_cert_chain = false;
+    bool skip_default_verify = false;
+    bool enable_alpn = false;
+    bool did_handshake = false;
 };
 
 class ISslContext final : public ServiceFramework<ISslContext> {
@@ -492,7 +461,7 @@ public:
             {5, &ISslContext::ImportClientPki, "ImportClientPki"},
             {6, nullptr, "RemoveServerPki"},
             {7, nullptr, "RemoveClientPki"},
-            {8, nullptr, "RegisterInternalPki"},
+            {8, D<&ISslContext::RegisterInternalPki>, "RegisterInternalPki"},
             {9, nullptr, "AddPolicyOid"},
             {10, nullptr, "ImportCrl"},
             {11, nullptr, "RemoveCrl"},
@@ -587,6 +556,11 @@ private:
         rb.Push(ResultSuccess);
         rb.Push(client_id);
     }
+
+    Result RegisterInternalPki() {
+        LOG_WARNING(Service_SSL, "(STUBBED) called");
+        R_SUCCEED();
+    }
 };
 
 class ISslService final : public ServiceFramework<ISslService> {

src/core/hle/service/ssl/ssl_backend.h

@@ -36,12 +36,17 @@ class SSLConnectionBackend {
 public:
     virtual ~SSLConnectionBackend() {}
     virtual void SetSocket(std::shared_ptr<Network::SocketBase> socket) = 0;
-    virtual Result SetHostName(const std::string& hostname) = 0;
     virtual void SetVerifyOption(u32 option) = 0;
     virtual Result DoHandshake() = 0;
     virtual Result Read(size_t* out_size, std::span<u8> data) = 0;
+    virtual Result Peek(size_t* out_size, std::span<u8> data) = 0;
     virtual Result Write(size_t* out_size, std::span<const u8> data) = 0;
     virtual Result GetServerCerts(std::vector<std::vector<u8>>* out_certs) = 0;
+    virtual Result SetHostName(const char* hostname) = 0;
+    virtual Result GetHostName(std::span<u8> hostname, u32* out_size) = 0;
+    virtual int Pending() = 0;
+    virtual Result SetRenegotiationMode(u32 mode) = 0;
+    virtual Result GetRenegotiationMode(u32* mode) = 0;
 };
 
 Result CreateSSLConnectionBackend(std::unique_ptr<SSLConnectionBackend>* out_backend);

src/core/hle/service/ssl/ssl_backend_openssl.cpp

@@ -157,18 +157,30 @@ public:
         socket = std::move(socket_in);
     }
 
-    Result SetHostName(const std::string& hostname) override {
+    Result SetHostName(const char* hostname) override {
         if (!skip_cert_verification) {
-            if (!SSL_set1_host(ssl, hostname.c_str())) {
+            if (!SSL_set1_host(ssl, hostname)) {
                 LOG_ERROR(Service_SSL, "SSL_set1_host({}) failed", hostname);
                 return CheckOpenSSLErrors();
             }
         }
-        if (!SSL_set_tlsext_host_name(ssl, hostname.c_str())) { // hostname for SNI
+        if (!SSL_set_tlsext_host_name(ssl, hostname)) { // hostname for SNI
             LOG_ERROR(Service_SSL, "SSL_set_tlsext_host_name({}) failed", hostname);
             return CheckOpenSSLErrors();
         }
-        return ResultSuccess;
+        R_SUCCEED();
+    }
+
+    Result GetHostName(std::span<u8> data, u32* out_size) override {
+        auto const peer_name = SSL_get0_peername(ssl);
+        if (peer_name == nullptr) {
+            LOG_ERROR(Service_SSL, "SSL_get0_peername()");
+            return CheckOpenSSLErrors();
+        }
+        auto const s = std::string{peer_name};
+        *out_size = u32(s.size());
+        std::memcpy(data.data(), s.data(), (std::min)(s.size(), data.size()));
+        R_SUCCEED();
     }
 
     void SetVerifyOption(u32 option) override {
@@ -213,6 +225,13 @@ public:
         return HandleReturn("SSL_read_ex", out_size, ret);
     }
 
+    Result Peek(size_t* out_size, std::span<u8> data) override {
+        auto const n = (std::min)(data.size(), *out_size);
+        const int ret = SSL_peek(ssl, data.data(), int(n));
+        *out_size = n;
+        return HandleReturn("SSL_write_ex", out_size, ret);
+    }
+
     Result Write(size_t* out_size, std::span<const u8> data) override {
         const int ret = SSL_write_ex(ssl, data.data(), data.size(), out_size);
         return HandleReturn("SSL_write_ex", out_size, ret);
@@ -263,7 +282,25 @@ public:
             out_certs->emplace_back(buf, buf + len);
             OPENSSL_free(buf);
         }
-        return ResultSuccess;
+        R_SUCCEED();
+    }
+
+    int Pending() override {
+        return SSL_pending(ssl);
+    }
+
+    Result SetRenegotiationMode(u32 mode) override {
+        if (mode == 0) {
+            SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_RENEGOTIATION);
+        } else {
+            SSL_CTX_set_options(ssl_ctx, SSL_OP_ALLOW_CLIENT_RENEGOTIATION);
+        }
+        R_SUCCEED();
+    }
+
+    Result GetRenegotiationMode(u32* mode) override {
+        *mode = SSL_get_secure_renegotiation_support(ssl) ? 1 : 0;
+        R_SUCCEED();
     }
 
     ~SSLConnectionBackendOpenSSL() {

src/core/tools/freezer.cpp

@@ -33,18 +33,10 @@ u64 MemoryReadWidth(Core::Memory::Memory& memory, u32 width, VAddr addr) {
 
 void MemoryWriteWidth(Core::Memory::Memory& memory, u32 width, VAddr addr, u64 value) {
     switch (width) {
-    case 1:
-        memory.Write8(addr, static_cast<u8>(value));
-        break;
-    case 2:
-        memory.Write16(addr, static_cast<u16>(value));
-        break;
-    case 4:
-        memory.Write32(addr, static_cast<u32>(value));
-        break;
-    case 8:
-        memory.Write64(addr, value);
-        break;
+    case sizeof(u64): return memory.Write64(addr, value);
+    case sizeof(u32): return memory.Write32(addr, u32(value));
+    case sizeof(u16): return memory.Write16(addr, u16(value));
+    case sizeof(u8): return memory.Write8(addr, u8(value));
     default:
         UNREACHABLE();
     }

src/dynarmic/src/dynarmic/backend/arm64/a32_address_space.cpp

@@ -82,7 +82,7 @@ static void* EmitExclusiveReadCallTrampoline(oaknut::CodeGenerator& code, const
 
     auto fn = [](const A32::UserConfig& conf, A32::VAddr vaddr) -> T {
         return conf.global_monitor->ReadAndMark<T>(conf.processor_id, vaddr, [&]() -> T {
-            return (conf.callbacks->*callback)(vaddr);
+            return (conf.callbacks->*callback)(vaddr, sizeof(T));
         });
     };
 
@@ -136,12 +136,9 @@ static void* EmitExclusiveWriteCallTrampoline(oaknut::CodeGenerator& code, const
     oaknut::Label l_addr, l_this;
 
     auto fn = [](const A32::UserConfig& conf, A32::VAddr vaddr, T value) -> u32 {
-        return conf.global_monitor->DoExclusiveOperation<T>(conf.processor_id, vaddr,
-                                                            [&](T expected) -> bool {
-                                                                return (conf.callbacks->*callback)(vaddr, value, expected);
-                                                            })
-                 ? 0
-                 : 1;
+        return conf.global_monitor->DoExclusiveOperation<T>(conf.processor_id, vaddr, [&](T expected) -> bool {
+            return (conf.callbacks->*callback)(vaddr, value, expected);
+        }) ? 0 : 1;
     };
 
     void* target = code.xptr<void*>();
@@ -179,26 +176,14 @@ void A32AddressSpace::EmitPrelude() {
 
     UnprotectCodeMemory();
 
-    prelude_info.read_memory_8 = EmitCallTrampoline<&A32::UserCallbacks::MemoryRead8>(code, conf.callbacks);
-    prelude_info.read_memory_16 = EmitCallTrampoline<&A32::UserCallbacks::MemoryRead16>(code, conf.callbacks);
-    prelude_info.read_memory_32 = EmitCallTrampoline<&A32::UserCallbacks::MemoryRead32>(code, conf.callbacks);
-    prelude_info.read_memory_64 = EmitCallTrampoline<&A32::UserCallbacks::MemoryRead64>(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_8 = EmitWrappedReadCallTrampoline<&A32::UserCallbacks::MemoryRead8>(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_16 = EmitWrappedReadCallTrampoline<&A32::UserCallbacks::MemoryRead16>(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_32 = EmitWrappedReadCallTrampoline<&A32::UserCallbacks::MemoryRead32>(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_64 = EmitWrappedReadCallTrampoline<&A32::UserCallbacks::MemoryRead64>(code, conf.callbacks);
-    prelude_info.exclusive_read_memory_8 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead8, u8>(code, conf);
-    prelude_info.exclusive_read_memory_16 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead16, u16>(code, conf);
-    prelude_info.exclusive_read_memory_32 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead32, u32>(code, conf);
-    prelude_info.exclusive_read_memory_64 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead64, u64>(code, conf);
-    prelude_info.write_memory_8 = EmitCallTrampoline<&A32::UserCallbacks::MemoryWrite8>(code, conf.callbacks);
-    prelude_info.write_memory_16 = EmitCallTrampoline<&A32::UserCallbacks::MemoryWrite16>(code, conf.callbacks);
-    prelude_info.write_memory_32 = EmitCallTrampoline<&A32::UserCallbacks::MemoryWrite32>(code, conf.callbacks);
-    prelude_info.write_memory_64 = EmitCallTrampoline<&A32::UserCallbacks::MemoryWrite64>(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_8 = EmitWrappedWriteCallTrampoline<&A32::UserCallbacks::MemoryWrite8>(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_16 = EmitWrappedWriteCallTrampoline<&A32::UserCallbacks::MemoryWrite16>(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_32 = EmitWrappedWriteCallTrampoline<&A32::UserCallbacks::MemoryWrite32>(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_64 = EmitWrappedWriteCallTrampoline<&A32::UserCallbacks::MemoryWrite64>(code, conf.callbacks);
+    prelude_info.read_memory = EmitCallTrampoline<&A32::UserCallbacks::MemoryRead>(code, conf.callbacks);
+    prelude_info.wrapped_read_memory = EmitWrappedReadCallTrampoline<&A32::UserCallbacks::MemoryRead>(code, conf.callbacks);
+    prelude_info.exclusive_read_memory_8 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead, u8>(code, conf);
+    prelude_info.exclusive_read_memory_16 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead, u16>(code, conf);
+    prelude_info.exclusive_read_memory_32 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead, u32>(code, conf);
+    prelude_info.exclusive_read_memory_64 = EmitExclusiveReadCallTrampoline<&A32::UserCallbacks::MemoryRead, u64>(code, conf);
+    prelude_info.write_memory = EmitCallTrampoline<&A32::UserCallbacks::MemoryWrite>(code, conf.callbacks);
+    prelude_info.wrapped_write_memory = EmitWrappedWriteCallTrampoline<&A32::UserCallbacks::MemoryWrite>(code, conf.callbacks);
     prelude_info.exclusive_write_memory_8 = EmitExclusiveWriteCallTrampoline<&A32::UserCallbacks::MemoryWriteExclusive8, u8>(code, conf);
     prelude_info.exclusive_write_memory_16 = EmitExclusiveWriteCallTrampoline<&A32::UserCallbacks::MemoryWriteExclusive16, u16>(code, conf);
     prelude_info.exclusive_write_memory_32 = EmitExclusiveWriteCallTrampoline<&A32::UserCallbacks::MemoryWriteExclusive32, u32>(code, conf);

src/dynarmic/src/dynarmic/backend/arm64/a64_address_space.cpp

@@ -23,7 +23,7 @@
 namespace Dynarmic::Backend::Arm64 {
 
 template<auto mfp, typename T>
-static void* EmitCallTrampoline(oaknut::CodeGenerator& code, T* this_) {
+static void* EmitCallTrampoline(oaknut::CodeGenerator& code, T* this_, size_t bitsize = 0) {
     using namespace oaknut::util;
 
     const auto info = Devirtualize<mfp>(this_);
@@ -32,6 +32,9 @@ static void* EmitCallTrampoline(oaknut::CodeGenerator& code, T* this_) {
 
     void* target = code.xptr<void*>();
     code.LDR(X0, l_this);
+    if (bitsize) {
+        code.MOV(X1, bitsize);
+    }
     code.LDR(Xscratch0, l_addr);
     code.BR(Xscratch0);
 
@@ -45,7 +48,7 @@ static void* EmitCallTrampoline(oaknut::CodeGenerator& code, T* this_) {
 }
 
 template<auto mfp, typename T>
-static void* EmitWrappedReadCallTrampoline(oaknut::CodeGenerator& code, T* this_) {
+static void* EmitWrappedReadCallTrampoline(oaknut::CodeGenerator& code, T* this_, size_t bitsize) {
     using namespace oaknut::util;
 
     const auto info = Devirtualize<mfp>(this_);
@@ -58,6 +61,7 @@ static void* EmitWrappedReadCallTrampoline(oaknut::CodeGenerator& code, T* this_
     ABI_PushRegisters(code, save_regs, 0);
     code.LDR(X0, l_this);
     code.MOV(X1, Xscratch0);
+    code.MOV(X2, bitsize);
     code.LDR(Xscratch0, l_addr);
     code.BLR(Xscratch0);
     code.MOV(Xscratch0, X0);
@@ -81,7 +85,7 @@ static void* EmitExclusiveReadCallTrampoline(oaknut::CodeGenerator& code, const
 
     auto fn = [](const A64::UserConfig& conf, A64::VAddr vaddr) -> T {
         return conf.global_monitor->ReadAndMark<T>(conf.processor_id, vaddr, [&]() -> T {
-            return (conf.callbacks->*callback)(vaddr);
+            return (conf.callbacks->*callback)(vaddr, sizeof(T));
         });
     };
 
@@ -100,7 +104,7 @@ static void* EmitExclusiveReadCallTrampoline(oaknut::CodeGenerator& code, const
 }
 
 template<auto mfp, typename T>
-static void* EmitWrappedWriteCallTrampoline(oaknut::CodeGenerator& code, T* this_) {
+static void* EmitWrappedWriteCallTrampoline(oaknut::CodeGenerator& code, T* this_, size_t bitsize) {
     using namespace oaknut::util;
 
     const auto info = Devirtualize<mfp>(this_);
@@ -114,6 +118,7 @@ static void* EmitWrappedWriteCallTrampoline(oaknut::CodeGenerator& code, T* this
     code.LDR(X0, l_this);
     code.MOV(X1, Xscratch0);
     code.MOV(X2, Xscratch1);
+    code.MOV(X3, bitsize);
     code.LDR(Xscratch0, l_addr);
     code.BLR(Xscratch0);
     ABI_PopRegisters(code, save_regs, 0);
@@ -133,14 +138,10 @@ static void* EmitExclusiveWriteCallTrampoline(oaknut::CodeGenerator& code, const
     using namespace oaknut::util;
 
     oaknut::Label l_addr, l_this;
-
     auto fn = [](const A64::UserConfig& conf, A64::VAddr vaddr, T value) -> u32 {
-        return conf.global_monitor->DoExclusiveOperation<T>(conf.processor_id, vaddr,
-                                                            [&](T expected) -> bool {
-                                                                return (conf.callbacks->*callback)(vaddr, value, expected);
-                                                            })
-                 ? 0
-                 : 1;
+        return conf.global_monitor->DoExclusiveOperation<T>(conf.processor_id, vaddr, [&](T expected) -> bool {
+            return (conf.callbacks->*callback)(vaddr, value, expected);
+        }) ? 0 : 1;
     };
 
     void* target = code.xptr<void*>();
@@ -346,30 +347,30 @@ void A64AddressSpace::EmitPrelude() {
 
     UnprotectCodeMemory();
 
-    prelude_info.read_memory_8 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead8>(code, conf.callbacks);
-    prelude_info.read_memory_16 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead16>(code, conf.callbacks);
-    prelude_info.read_memory_32 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead32>(code, conf.callbacks);
-    prelude_info.read_memory_64 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead64>(code, conf.callbacks);
+    prelude_info.read_memory_8 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u8));
+    prelude_info.read_memory_16 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u16));
+    prelude_info.read_memory_32 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u32));
+    prelude_info.read_memory_64 = EmitCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u64));
     prelude_info.read_memory_128 = EmitRead128CallTrampoline(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_8 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead8>(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_16 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead16>(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_32 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead32>(code, conf.callbacks);
-    prelude_info.wrapped_read_memory_64 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead64>(code, conf.callbacks);
+    prelude_info.wrapped_read_memory_8 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u8));
+    prelude_info.wrapped_read_memory_16 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u16));
+    prelude_info.wrapped_read_memory_32 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u32));
+    prelude_info.wrapped_read_memory_64 = EmitWrappedReadCallTrampoline<&A64::UserCallbacks::MemoryRead>(code, conf.callbacks, sizeof(u64));
     prelude_info.wrapped_read_memory_128 = EmitWrappedRead128CallTrampoline(code, conf.callbacks);
-    prelude_info.exclusive_read_memory_8 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead8, u8>(code, conf);
-    prelude_info.exclusive_read_memory_16 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead16, u16>(code, conf);
-    prelude_info.exclusive_read_memory_32 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead32, u32>(code, conf);
-    prelude_info.exclusive_read_memory_64 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead64, u64>(code, conf);
+    prelude_info.exclusive_read_memory_8 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead, u8>(code, conf);
+    prelude_info.exclusive_read_memory_16 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead, u16>(code, conf);
+    prelude_info.exclusive_read_memory_32 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead, u32>(code, conf);
+    prelude_info.exclusive_read_memory_64 = EmitExclusiveReadCallTrampoline<&A64::UserCallbacks::MemoryRead, u64>(code, conf);
     prelude_info.exclusive_read_memory_128 = EmitExclusiveRead128CallTrampoline(code, conf);
-    prelude_info.write_memory_8 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite8>(code, conf.callbacks);
-    prelude_info.write_memory_16 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite16>(code, conf.callbacks);
-    prelude_info.write_memory_32 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite32>(code, conf.callbacks);
-    prelude_info.write_memory_64 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite64>(code, conf.callbacks);
+    prelude_info.write_memory_8 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u8));
+    prelude_info.write_memory_16 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u16));
+    prelude_info.write_memory_32 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u32));
+    prelude_info.write_memory_64 = EmitCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u64));
     prelude_info.write_memory_128 = EmitWrite128CallTrampoline(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_8 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite8>(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_16 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite16>(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_32 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite32>(code, conf.callbacks);
-    prelude_info.wrapped_write_memory_64 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite64>(code, conf.callbacks);
+    prelude_info.wrapped_write_memory_8 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u8));
+    prelude_info.wrapped_write_memory_16 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u16));
+    prelude_info.wrapped_write_memory_32 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u32));
+    prelude_info.wrapped_write_memory_64 = EmitWrappedWriteCallTrampoline<&A64::UserCallbacks::MemoryWrite>(code, conf.callbacks, sizeof(u64));
     prelude_info.wrapped_write_memory_128 = EmitWrappedWrite128CallTrampoline(code, conf.callbacks);
     prelude_info.exclusive_write_memory_8 = EmitExclusiveWriteCallTrampoline<&A64::UserCallbacks::MemoryWriteExclusive8, u8>(code, conf);
     prelude_info.exclusive_write_memory_16 = EmitExclusiveWriteCallTrampoline<&A64::UserCallbacks::MemoryWriteExclusive16, u16>(code, conf);

src/dynarmic/src/dynarmic/backend/arm64/address_space.cpp

@@ -145,6 +145,7 @@ void AddressSpace::Link(EmittedBlockInfo& block_info) {
         case LinkTarget::ReturnFromRunCode:
             c.B(prelude_info.return_from_run_code);
             break;
+        // { this, vaddr, size }
         case LinkTarget::ReadMemory8:
             c.BL(prelude_info.read_memory_8);
             break;
@@ -160,6 +161,7 @@ void AddressSpace::Link(EmittedBlockInfo& block_info) {
         case LinkTarget::ReadMemory128:
             c.BL(prelude_info.read_memory_128);
             break;
+        // { this, vaddr, size }
         case LinkTarget::WrappedReadMemory8:
             c.BL(prelude_info.wrapped_read_memory_8);
             break;
@@ -190,6 +192,7 @@ void AddressSpace::Link(EmittedBlockInfo& block_info) {
         case LinkTarget::ExclusiveReadMemory128:
             c.BL(prelude_info.exclusive_read_memory_128);
             break;
+        // { this, vaddr, value, size }
         case LinkTarget::WriteMemory8:
             c.BL(prelude_info.write_memory_8);
             break;

src/dynarmic/src/dynarmic/backend/x64/a32_emit_x64_memory.cpp

@@ -31,16 +31,16 @@ using namespace Xbyak::util;
 void A32EmitX64::GenFastmemFallbacks() {
     const std::initializer_list<int> idxes{0, 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14};
     const std::array<std::pair<size_t, ArgCallback>, 4> read_callbacks{{
-        {8, Devirtualize<&A32::UserCallbacks::MemoryRead8>(conf.callbacks)},
-        {16, Devirtualize<&A32::UserCallbacks::MemoryRead16>(conf.callbacks)},
-        {32, Devirtualize<&A32::UserCallbacks::MemoryRead32>(conf.callbacks)},
-        {64, Devirtualize<&A32::UserCallbacks::MemoryRead64>(conf.callbacks)},
+        {8, Devirtualize<&A32::UserCallbacks::MemoryRead>(conf.callbacks)},
+        {16, Devirtualize<&A32::UserCallbacks::MemoryRead>(conf.callbacks)},
+        {32, Devirtualize<&A32::UserCallbacks::MemoryRead>(conf.callbacks)},
+        {64, Devirtualize<&A32::UserCallbacks::MemoryRead>(conf.callbacks)},
     }};
     const std::array<std::pair<size_t, ArgCallback>, 4> write_callbacks{{
-        {8, Devirtualize<&A32::UserCallbacks::MemoryWrite8>(conf.callbacks)},
-        {16, Devirtualize<&A32::UserCallbacks::MemoryWrite16>(conf.callbacks)},
-        {32, Devirtualize<&A32::UserCallbacks::MemoryWrite32>(conf.callbacks)},
-        {64, Devirtualize<&A32::UserCallbacks::MemoryWrite64>(conf.callbacks)},
+        {8, Devirtualize<&A32::UserCallbacks::MemoryWrite>(conf.callbacks)},
+        {16, Devirtualize<&A32::UserCallbacks::MemoryWrite>(conf.callbacks)},
+        {32, Devirtualize<&A32::UserCallbacks::MemoryWrite>(conf.callbacks)},
+        {64, Devirtualize<&A32::UserCallbacks::MemoryWrite>(conf.callbacks)},
     }};
     const std::array<std::pair<size_t, ArgCallback>, 4> exclusive_write_callbacks{{
         {8, Devirtualize<&A32::UserCallbacks::MemoryWriteExclusive8>(conf.callbacks)},
@@ -56,12 +56,12 @@ void A32EmitX64::GenFastmemFallbacks() {
                     code.align();
                     read_fallbacks[std::make_tuple(ordered, bitsize, vaddr_idx, value_idx)] = code.getCurr<void (*)()>();
                     ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, HostLocRegIdx(value_idx));
+                    // params = { this, vaddr, size }
                     if (vaddr_idx != code.ABI_PARAM2.getIdx()) {
                         code.mov(code.ABI_PARAM2, Xbyak::Reg64{vaddr_idx});
                     }
-                    if (ordered) {
-                        code.mfence();
-                    }
+                    code.mov(code.ABI_PARAM3, bitsize / CHAR_BIT);
+                    if (ordered) code.mfence();
                     callback.EmitCall(code);
                     if (value_idx != code.ABI_RETURN.getIdx()) {
                         code.mov(Xbyak::Reg64{value_idx}, code.ABI_RETURN);
@@ -76,6 +76,7 @@ void A32EmitX64::GenFastmemFallbacks() {
                     code.align();
                     write_fallbacks[std::make_tuple(ordered, bitsize, vaddr_idx, value_idx)] = code.getCurr<void (*)()>();
                     ABI_PushCallerSaveRegistersAndAdjustStack(code);
+                    // params = { this, vaddr, value, size }
                     if (vaddr_idx == code.ABI_PARAM3.getIdx() && value_idx == code.ABI_PARAM2.getIdx()) {
                         code.xchg(code.ABI_PARAM2, code.ABI_PARAM3);
                     } else if (vaddr_idx == code.ABI_PARAM3.getIdx()) {
@@ -92,10 +93,9 @@ void A32EmitX64::GenFastmemFallbacks() {
                         }
                     }
                     code.ZeroExtendFrom(bitsize, code.ABI_PARAM3);
+                    code.mov(code.ABI_PARAM4, bitsize / CHAR_BIT);
                     callback.EmitCall(code);
-                    if (ordered) {
-                        code.mfence();
-                    }
+                    if (ordered) code.mfence();
                     ABI_PopCallerSaveRegistersAndAdjustStack(code);
                     code.ret();
                     PerfMapRegister(write_fallbacks[std::make_tuple(ordered, bitsize, vaddr_idx, value_idx)], code.getCurr(), fmt::format("a32_write_fallback_{}", bitsize));
@@ -138,35 +138,35 @@ void A32EmitX64::GenFastmemFallbacks() {
 #undef Axx
 
 void A32EmitX64::EmitA32ReadMemory8(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<8, &A32::UserCallbacks::MemoryRead8>(ctx, inst);
+    EmitMemoryRead<8, &A32::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32ReadMemory16(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<16, &A32::UserCallbacks::MemoryRead16>(ctx, inst);
+    EmitMemoryRead<16, &A32::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32ReadMemory32(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<32, &A32::UserCallbacks::MemoryRead32>(ctx, inst);
+    EmitMemoryRead<32, &A32::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32ReadMemory64(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<64, &A32::UserCallbacks::MemoryRead64>(ctx, inst);
+    EmitMemoryRead<64, &A32::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32WriteMemory8(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<8, &A32::UserCallbacks::MemoryWrite8>(ctx, inst);
+    EmitMemoryWrite<8, &A32::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32WriteMemory16(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<16, &A32::UserCallbacks::MemoryWrite16>(ctx, inst);
+    EmitMemoryWrite<16, &A32::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32WriteMemory32(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<32, &A32::UserCallbacks::MemoryWrite32>(ctx, inst);
+    EmitMemoryWrite<32, &A32::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32WriteMemory64(A32EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<64, &A32::UserCallbacks::MemoryWrite64>(ctx, inst);
+    EmitMemoryWrite<64, &A32::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A32EmitX64::EmitA32ClearExclusive(A32EmitContext&, IR::Inst*) {
@@ -175,33 +175,33 @@ void A32EmitX64::EmitA32ClearExclusive(A32EmitContext&, IR::Inst*) {
 
 void A32EmitX64::EmitA32ExclusiveReadMemory8(A32EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<8, &A32::UserCallbacks::MemoryRead8>(ctx, inst);
+        EmitExclusiveReadMemoryInline<8, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<8, &A32::UserCallbacks::MemoryRead8>(ctx, inst);
+        EmitExclusiveReadMemory<8, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 
 void A32EmitX64::EmitA32ExclusiveReadMemory16(A32EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<16, &A32::UserCallbacks::MemoryRead16>(ctx, inst);
+        EmitExclusiveReadMemoryInline<16, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<16, &A32::UserCallbacks::MemoryRead16>(ctx, inst);
+        EmitExclusiveReadMemory<16, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 
 void A32EmitX64::EmitA32ExclusiveReadMemory32(A32EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<32, &A32::UserCallbacks::MemoryRead32>(ctx, inst);
+        EmitExclusiveReadMemoryInline<32, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<32, &A32::UserCallbacks::MemoryRead32>(ctx, inst);
+        EmitExclusiveReadMemory<32, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 
 void A32EmitX64::EmitA32ExclusiveReadMemory64(A32EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<64, &A32::UserCallbacks::MemoryRead64>(ctx, inst);
+        EmitExclusiveReadMemoryInline<64, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<64, &A32::UserCallbacks::MemoryRead64>(ctx, inst);
+        EmitExclusiveReadMemory<64, &A32::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 

src/dynarmic/src/dynarmic/backend/x64/a64_emit_x64_memory.cpp

@@ -115,16 +115,16 @@ void A64EmitX64::GenMemory128Accessors() {
 void A64EmitX64::GenFastmemFallbacks() {
     const std::initializer_list<int> idxes{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
     const std::array<std::pair<size_t, ArgCallback>, 4> read_callbacks{{
-        {8, Devirtualize<&A64::UserCallbacks::MemoryRead8>(conf.callbacks)},
-        {16, Devirtualize<&A64::UserCallbacks::MemoryRead16>(conf.callbacks)},
-        {32, Devirtualize<&A64::UserCallbacks::MemoryRead32>(conf.callbacks)},
-        {64, Devirtualize<&A64::UserCallbacks::MemoryRead64>(conf.callbacks)},
+        {8, Devirtualize<&A64::UserCallbacks::MemoryRead>(conf.callbacks)},
+        {16, Devirtualize<&A64::UserCallbacks::MemoryRead>(conf.callbacks)},
+        {32, Devirtualize<&A64::UserCallbacks::MemoryRead>(conf.callbacks)},
+        {64, Devirtualize<&A64::UserCallbacks::MemoryRead>(conf.callbacks)},
     }};
     const std::array<std::pair<size_t, ArgCallback>, 4> write_callbacks{{
-        {8, Devirtualize<&A64::UserCallbacks::MemoryWrite8>(conf.callbacks)},
-        {16, Devirtualize<&A64::UserCallbacks::MemoryWrite16>(conf.callbacks)},
-        {32, Devirtualize<&A64::UserCallbacks::MemoryWrite32>(conf.callbacks)},
-        {64, Devirtualize<&A64::UserCallbacks::MemoryWrite64>(conf.callbacks)},
+        {8, Devirtualize<&A64::UserCallbacks::MemoryWrite>(conf.callbacks)},
+        {16, Devirtualize<&A64::UserCallbacks::MemoryWrite>(conf.callbacks)},
+        {32, Devirtualize<&A64::UserCallbacks::MemoryWrite>(conf.callbacks)},
+        {64, Devirtualize<&A64::UserCallbacks::MemoryWrite>(conf.callbacks)},
     }};
     const std::array<std::pair<size_t, ArgCallback>, 4> exclusive_write_callbacks{{
         {8, Devirtualize<&A64::UserCallbacks::MemoryWriteExclusive8>(conf.callbacks)},
@@ -204,12 +204,12 @@ void A64EmitX64::GenFastmemFallbacks() {
                     code.align();
                     read_fallbacks[std::make_tuple(ordered, bitsize, vaddr_idx, value_idx)] = code.getCurr<void (*)()>();
                     ABI_PushCallerSaveRegistersAndAdjustStackExcept(code, HostLocRegIdx(value_idx));
+                    // params = { this, vaddr, size }
                     if (vaddr_idx != code.ABI_PARAM2.getIdx()) {
                         code.mov(code.ABI_PARAM2, Xbyak::Reg64{vaddr_idx});
                     }
-                    if (ordered) {
-                        code.mfence();
-                    }
+                    code.mov(code.ABI_PARAM3, bitsize / CHAR_BIT);
+                    if (ordered) code.mfence();
                     callback.EmitCall(code);
                     if (value_idx != code.ABI_RETURN.getIdx()) {
                         code.mov(Xbyak::Reg64{value_idx}, code.ABI_RETURN);
@@ -224,6 +224,7 @@ void A64EmitX64::GenFastmemFallbacks() {
                     code.align();
                     write_fallbacks[std::make_tuple(ordered, bitsize, vaddr_idx, value_idx)] = code.getCurr<void (*)()>();
                     ABI_PushCallerSaveRegistersAndAdjustStack(code);
+                    // params = { this, vaddr, value, size }
                     if (vaddr_idx == code.ABI_PARAM3.getIdx() && value_idx == code.ABI_PARAM2.getIdx()) {
                         code.xchg(code.ABI_PARAM2, code.ABI_PARAM3);
                     } else if (vaddr_idx == code.ABI_PARAM3.getIdx()) {
@@ -240,10 +241,9 @@ void A64EmitX64::GenFastmemFallbacks() {
                         }
                     }
                     code.ZeroExtendFrom(bitsize, code.ABI_PARAM3);
+                    code.mov(code.ABI_PARAM4, bitsize / CHAR_BIT);
                     callback.EmitCall(code);
-                    if (ordered) {
-                        code.mfence();
-                    }
+                    if (ordered) code.mfence();
                     ABI_PopCallerSaveRegistersAndAdjustStack(code);
                     code.ret();
                     PerfMapRegister(write_fallbacks[std::make_tuple(ordered, bitsize, vaddr_idx, value_idx)], code.getCurr(), fmt::format("a64_write_fallback_{}", bitsize));
@@ -286,19 +286,19 @@ void A64EmitX64::GenFastmemFallbacks() {
 #undef Axx
 
 void A64EmitX64::EmitA64ReadMemory8(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<8, &A64::UserCallbacks::MemoryRead8>(ctx, inst);
+    EmitMemoryRead<8, &A64::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64ReadMemory16(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<16, &A64::UserCallbacks::MemoryRead16>(ctx, inst);
+    EmitMemoryRead<16, &A64::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64ReadMemory32(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<32, &A64::UserCallbacks::MemoryRead32>(ctx, inst);
+    EmitMemoryRead<32, &A64::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64ReadMemory64(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryRead<64, &A64::UserCallbacks::MemoryRead64>(ctx, inst);
+    EmitMemoryRead<64, &A64::UserCallbacks::MemoryRead>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64ReadMemory128(A64EmitContext& ctx, IR::Inst* inst) {
@@ -306,23 +306,23 @@ void A64EmitX64::EmitA64ReadMemory128(A64EmitContext& ctx, IR::Inst* inst) {
 }
 
 void A64EmitX64::EmitA64WriteMemory8(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<8, &A64::UserCallbacks::MemoryWrite8>(ctx, inst);
+    EmitMemoryWrite<8, &A64::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64WriteMemory16(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<16, &A64::UserCallbacks::MemoryWrite16>(ctx, inst);
+    EmitMemoryWrite<16, &A64::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64WriteMemory32(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<32, &A64::UserCallbacks::MemoryWrite32>(ctx, inst);
+    EmitMemoryWrite<32, &A64::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64WriteMemory64(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<64, &A64::UserCallbacks::MemoryWrite64>(ctx, inst);
+    EmitMemoryWrite<64, &A64::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64WriteMemory128(A64EmitContext& ctx, IR::Inst* inst) {
-    EmitMemoryWrite<128, &A64::UserCallbacks::MemoryWrite64>(ctx, inst);
+    EmitMemoryWrite<128, &A64::UserCallbacks::MemoryWrite>(ctx, inst);
 }
 
 void A64EmitX64::EmitA64ClearExclusive(A64EmitContext&, IR::Inst*) {
@@ -331,33 +331,33 @@ void A64EmitX64::EmitA64ClearExclusive(A64EmitContext&, IR::Inst*) {
 
 void A64EmitX64::EmitA64ExclusiveReadMemory8(A64EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<8, &A64::UserCallbacks::MemoryRead8>(ctx, inst);
+        EmitExclusiveReadMemoryInline<8, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<8, &A64::UserCallbacks::MemoryRead8>(ctx, inst);
+        EmitExclusiveReadMemory<8, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 
 void A64EmitX64::EmitA64ExclusiveReadMemory16(A64EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<16, &A64::UserCallbacks::MemoryRead16>(ctx, inst);
+        EmitExclusiveReadMemoryInline<16, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<16, &A64::UserCallbacks::MemoryRead16>(ctx, inst);
+        EmitExclusiveReadMemory<16, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 
 void A64EmitX64::EmitA64ExclusiveReadMemory32(A64EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<32, &A64::UserCallbacks::MemoryRead32>(ctx, inst);
+        EmitExclusiveReadMemoryInline<32, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<32, &A64::UserCallbacks::MemoryRead32>(ctx, inst);
+        EmitExclusiveReadMemory<32, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 
 void A64EmitX64::EmitA64ExclusiveReadMemory64(A64EmitContext& ctx, IR::Inst* inst) {
     if (conf.fastmem_exclusive_access) {
-        EmitExclusiveReadMemoryInline<64, &A64::UserCallbacks::MemoryRead64>(ctx, inst);
+        EmitExclusiveReadMemoryInline<64, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     } else {
-        EmitExclusiveReadMemory<64, &A64::UserCallbacks::MemoryRead64>(ctx, inst);
+        EmitExclusiveReadMemory<64, &A64::UserCallbacks::MemoryRead>(ctx, inst);
     }
 }
 

src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.cpp.inc

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 /* This file is part of the dynarmic project.
  * Copyright (c) 2022 MerryMage
  * SPDX-License-Identifier: 0BSD
@@ -56,16 +59,13 @@ void AxxEmitX64::EmitMemoryRead(AxxEmitContext& ctx, IR::Inst* inst) {
         // Neither fastmem nor page table: Use callbacks
         if constexpr (bitsize == 128) {
             ctx.reg_alloc.HostCall(code, nullptr, {}, args[1]);
-            if (ordered) {
-                code.mfence();
-            }
+            if (ordered) code.mfence();
             code.CallFunction(memory_read_128);
             ctx.reg_alloc.DefineValue(code, inst, xmm1);
         } else {
             ctx.reg_alloc.HostCall(code, inst, {}, args[1]);
-            if (ordered) {
-                code.mfence();
-            }
+            code.mov(code.ABI_PARAM3.cvt32(), bitsize / CHAR_BIT);
+            if (ordered) code.mfence();
             Devirtualize<callback>(conf.callbacks).EmitCall(code);
             code.ZeroExtendFrom(bitsize, code.ABI_RETURN);
         }
@@ -148,12 +148,12 @@ void AxxEmitX64::EmitMemoryWrite(AxxEmitContext& ctx, IR::Inst* inst) {
             ctx.reg_alloc.HostCall(code, nullptr);
             code.CallFunction(memory_write_128);
         } else {
+            // { this, vaddr, value, size }
             ctx.reg_alloc.HostCall(code, nullptr, {}, args[1], args[2]);
+            code.mov(code.ABI_PARAM4.cvt32(), bitsize / CHAR_BIT);
             Devirtualize<callback>(conf.callbacks).EmitCall(code);
         }
-        if (ordered) {
-            code.mfence();
-        }
+        if (ordered) code.mfence();
         EmitCheckMemoryAbort(ctx, inst);
         return;
     }
@@ -230,12 +230,11 @@ void AxxEmitX64::EmitExclusiveReadMemory(AxxEmitContext& ctx, IR::Inst* inst) {
         if (ordered) {
             code.mfence();
         }
-        code.CallLambda(
-            [](AxxUserConfig& conf, Axx::VAddr vaddr) -> T {
-                return conf.global_monitor->ReadAndMark<T>(conf.processor_id, vaddr, [&]() -> T {
-                    return (conf.callbacks->*callback)(vaddr);
-                });
+        code.CallLambda([](AxxUserConfig& conf, Axx::VAddr vaddr) -> T {
+            return conf.global_monitor->ReadAndMark<T>(conf.processor_id, vaddr, [&]() -> T {
+                return (conf.callbacks->*callback)(vaddr, bitsize / CHAR_BIT);
             });
+        });
         code.ZeroExtendFrom(bitsize, code.ABI_RETURN);
     } else {
         const Xbyak::Xmm result = ctx.reg_alloc.ScratchXmm(code);
@@ -250,12 +249,11 @@ void AxxEmitX64::EmitExclusiveReadMemory(AxxEmitContext& ctx, IR::Inst* inst) {
         if (ordered) {
             code.mfence();
         }
-        code.CallLambda(
-            [](AxxUserConfig& conf, Axx::VAddr vaddr, Vector& ret) {
-                ret = conf.global_monitor->ReadAndMark<Vector>(conf.processor_id, vaddr, [&]() -> Vector {
-                    return (conf.callbacks->*callback)(vaddr);
-                });
+        code.CallLambda([](AxxUserConfig& conf, Axx::VAddr vaddr, Vector& ret) {
+            ret = conf.global_monitor->ReadAndMark<Vector>(conf.processor_id, vaddr, [&]() -> Vector {
+                return (conf.callbacks->*callback)(vaddr);
             });
+        });
         code.movups(result, xword[rsp + ABI_SHADOW_SPACE]);
         ctx.reg_alloc.ReleaseStackSpace(code, 16 + ABI_SHADOW_SPACE);
 

src/dynarmic/src/dynarmic/backend/x64/emit_x64_memory.h

@@ -90,7 +90,7 @@ template<>
         code.shl(tmp, int(ctx.conf.page_table_log2_stride));
         code.mov(page, qword[r14 + tmp.cvt64()]);
     } else {
-        code.mov(page, qword[r14 + tmp.cvt64() * int(ctx.conf.page_table_log2_stride)]);
+        code.mov(page, qword[r14 + tmp.cvt64() * int(1 << ctx.conf.page_table_log2_stride)]);
     }
 
     // check for marked bit, use as unmapped if marked
@@ -161,8 +161,12 @@ template<>
         code.jnz(abort, code.T_NEAR);
     }
 
-    code.shl(tmp, int(ctx.conf.page_table_log2_stride));
-    code.mov(page, qword[r14 + tmp]);
+    if (ctx.conf.page_table_log2_stride > 3) {
+        code.shl(tmp, int(ctx.conf.page_table_log2_stride));
+        code.mov(page, qword[r14 + tmp.cvt64()]);
+    } else {
+        code.mov(page, qword[r14 + tmp.cvt64() * int(1 << ctx.conf.page_table_log2_stride)]);
+    }
 
     // check for marked bit, use as unmapped if marked
     if (ctx.conf.page_table_marked_bit) {
@@ -178,6 +182,7 @@ template<>
         code.mov(tmp, ctx.conf.page_table_pointer_mask);
         code.and_(page, tmp);
     }
+    // check for sign bit, apply sign extension as needed
     if (ctx.conf.page_table_sign_extension) {
         code.shl(page, *ctx.conf.page_table_sign_extension);
         code.sar(page, *ctx.conf.page_table_sign_extension);

src/dynarmic/src/dynarmic/interface/A32/config.h

@@ -66,7 +66,9 @@ struct UserCallbacks : public TranslateCallbacks {
 
     // All reads through this callback are 4-byte aligned.
     // Memory must be interpreted as little endian.
-    std::optional<std::uint32_t> MemoryReadCode(VAddr vaddr) override { return MemoryRead32(vaddr); }
+    std::optional<std::uint32_t> MemoryReadCode(VAddr vaddr) override {
+        return std::uint32_t(MemoryRead(vaddr, sizeof(std::uint32_t)));
+    }
 
     // This function is called before the instruction at pc is read.
     // IR code can be emitted by the callee prior to instruction handling.
@@ -80,16 +82,10 @@ struct UserCallbacks : public TranslateCallbacks {
 
     // Reads through these callbacks may not be aligned.
     // Memory must be interpreted as if ENDIANSTATE == 0, endianness will be corrected by the JIT.
-    virtual std::uint8_t MemoryRead8(VAddr vaddr) = 0;
-    virtual std::uint16_t MemoryRead16(VAddr vaddr) = 0;
-    virtual std::uint32_t MemoryRead32(VAddr vaddr) = 0;
-    virtual std::uint64_t MemoryRead64(VAddr vaddr) = 0;
+    virtual std::uint64_t MemoryRead(VAddr vaddr, std::size_t size) = 0;
 
     // Writes through these callbacks may not be aligned.
-    virtual void MemoryWrite8(VAddr vaddr, std::uint8_t value) = 0;
-    virtual void MemoryWrite16(VAddr vaddr, std::uint16_t value) = 0;
-    virtual void MemoryWrite32(VAddr vaddr, std::uint32_t value) = 0;
-    virtual void MemoryWrite64(VAddr vaddr, std::uint64_t value) = 0;
+    virtual void MemoryWrite(VAddr vaddr, std::uint64_t value, std::size_t size) = 0;
 
     // Writes through these callbacks may not be aligned.
     virtual bool MemoryWriteExclusive8(VAddr /*vaddr*/, std::uint8_t /*value*/, std::uint8_t /*expected*/) { return false; }

src/dynarmic/src/dynarmic/interface/A64/config.h

@@ -89,20 +89,16 @@ struct UserCallbacks {
 
     // All reads through this callback are 4-byte aligned.
     // Memory must be interpreted as little endian.
-    virtual std::optional<std::uint32_t> MemoryReadCode(VAddr vaddr) { return MemoryRead32(vaddr); }
+    virtual std::optional<std::uint32_t> MemoryReadCode(VAddr vaddr) {
+        return std::uint32_t(MemoryRead(vaddr, sizeof(std::uint32_t)));
+    }
 
     // Reads through these callbacks may not be aligned.
-    virtual std::uint8_t MemoryRead8(VAddr vaddr) = 0;
-    virtual std::uint16_t MemoryRead16(VAddr vaddr) = 0;
-    virtual std::uint32_t MemoryRead32(VAddr vaddr) = 0;
-    virtual std::uint64_t MemoryRead64(VAddr vaddr) = 0;
+    virtual std::uint64_t MemoryRead(VAddr vaddr, std::size_t size) = 0;
     virtual Vector MemoryRead128(VAddr vaddr) = 0;
 
     // Writes through these callbacks may not be aligned.
-    virtual void MemoryWrite8(VAddr vaddr, std::uint8_t value) = 0;
-    virtual void MemoryWrite16(VAddr vaddr, std::uint16_t value) = 0;
-    virtual void MemoryWrite32(VAddr vaddr, std::uint32_t value) = 0;
-    virtual void MemoryWrite64(VAddr vaddr, std::uint64_t value) = 0;
+    virtual void MemoryWrite(VAddr vaddr, std::uint64_t value, std::size_t size) = 0;
     virtual void MemoryWrite128(VAddr vaddr, Vector value) = 0;
 
     // Writes through these callbacks may not be aligned.

src/dynarmic/src/dynarmic/ir/opt_passes.cpp

@@ -40,7 +40,7 @@ static void ConstantMemoryReads(IR::Block& block, A32::UserCallbacks* cb) {
             if (inst.AreAllArgsImmediates()) {
                 const u32 vaddr = inst.GetArg(1).GetU32();
                 if (cb->IsReadOnlyMemory(vaddr)) {
-                    const u8 value_from_memory = cb->MemoryRead8(vaddr);
+                    const u8 value_from_memory = u8(cb->MemoryRead(vaddr, sizeof(u8)));
                     inst.ReplaceUsesWith(IR::Value{value_from_memory});
                 }
             }
@@ -51,7 +51,7 @@ static void ConstantMemoryReads(IR::Block& block, A32::UserCallbacks* cb) {
             if (inst.AreAllArgsImmediates()) {
                 const u32 vaddr = inst.GetArg(1).GetU32();
                 if (cb->IsReadOnlyMemory(vaddr)) {
-                    const u16 value_from_memory = cb->MemoryRead16(vaddr);
+                    const u16 value_from_memory = u16(cb->MemoryRead(vaddr, sizeof(u16)));
                     inst.ReplaceUsesWith(IR::Value{value_from_memory});
                 }
             }
@@ -62,7 +62,7 @@ static void ConstantMemoryReads(IR::Block& block, A32::UserCallbacks* cb) {
             if (inst.AreAllArgsImmediates()) {
                 const u32 vaddr = inst.GetArg(1).GetU32();
                 if (cb->IsReadOnlyMemory(vaddr)) {
-                    const u32 value_from_memory = cb->MemoryRead32(vaddr);
+                    const u32 value_from_memory = u32(cb->MemoryRead(vaddr, sizeof(u32)));
                     inst.ReplaceUsesWith(IR::Value{value_from_memory});
                 }
             }
@@ -73,7 +73,7 @@ static void ConstantMemoryReads(IR::Block& block, A32::UserCallbacks* cb) {
             if (inst.AreAllArgsImmediates()) {
                 const u32 vaddr = inst.GetArg(1).GetU32();
                 if (cb->IsReadOnlyMemory(vaddr)) {
-                    const u64 value_from_memory = cb->MemoryRead64(vaddr);
+                    const u64 value_from_memory = u64(cb->MemoryRead(vaddr, sizeof(u64)));
                     inst.ReplaceUsesWith(IR::Value{value_from_memory});
                 }
             }

src/dynarmic/tests/A32/fuzz_thumb.cpp

@@ -503,7 +503,7 @@ TEST_CASE("Fuzz Thumb32 instructions set", "[JitX64][Thumb][Thumb32]") {
     }
 }
 
-TEST_CASE("Verify fix for off by one error in MemoryRead32 worked", "[Thumb][Thumb16]") {
+TEST_CASE("Verify fix for off by one error in MemoryRead<32> worked", "[Thumb][Thumb16]") {
     ThumbTestEnv test_env;
 
     // Prepare test subjects

src/dynarmic/tests/A32/test_arm_instructions.cpp

@@ -553,9 +553,9 @@ TEST_CASE("arm: Memory access (fastmem)", "[arm][A32]") {
     memset(backing_memory, 0, memory_size);
     memcpy(backing_memory + 0x100, "Lorem ipsum dolor sit amet, consectetur adipiscing elit.", 57);
 
-    env.MemoryWrite32(0, 0xE5904000);  // LDR R4, [R0]
-    env.MemoryWrite32(4, 0xE5814000);  // STR R4, [R1]
-    env.MemoryWrite32(8, 0xEAFFFFFE);  // B .
+    env.MemoryWrite(0, 0xE5904000, sizeof(u32));  // LDR R4, [R0]
+    env.MemoryWrite(4, 0xE5814000, sizeof(u32));  // STR R4, [R1]
+    env.MemoryWrite(8, 0xEAFFFFFE, sizeof(u32));  // B .
     jit.Regs()[0] = 0x100;
     jit.Regs()[1] = 0x1F0;
     jit.Regs()[15] = 0;       // PC = 0

src/dynarmic/tests/A32/testenv.h

@@ -16,6 +16,7 @@
 
 #include "common/assert.h"
 #include "common/common_types.h"
+#include "dynarmic/frontend/A32/translate/translate_callbacks.h"
 #include "dynarmic/interface/A32/a32.h"
 
 template<typename InstructionType_, u32 infinite_loop_u32>
@@ -59,42 +60,51 @@ public:
         return infinite_loop_u32;  // B .
     }
 
-    std::uint8_t MemoryRead8(u32 vaddr) override {
-        if (IsInCodeMem(vaddr)) {
-            return reinterpret_cast<u8*>(code_mem.data())[vaddr];
+    u64 MemoryRead(u32 vaddr, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            return MemoryRead(vaddr, sizeof(u32))
+                | MemoryRead(vaddr + sizeof(u32), sizeof(u32)) << 32;
+        case sizeof(u32):
+            return MemoryRead(vaddr, sizeof(u16))
+                | MemoryRead(vaddr + sizeof(u16), sizeof(u16)) << 16;
+        case sizeof(u16):
+            return MemoryRead(vaddr, sizeof(u8))
+                | MemoryRead(vaddr + sizeof(u8), sizeof(u8)) << 8;
+        case sizeof(u8): {
+            if (IsInCodeMem(vaddr))
+                return reinterpret_cast<u8*>(code_mem.data())[vaddr];
+            if (auto iter = modified_memory.find(vaddr); iter != modified_memory.end())
+                return iter->second;
+            return u8(vaddr);
         }
-        if (auto iter = modified_memory.find(vaddr); iter != modified_memory.end()) {
-            return iter->second;
+        default:
+            std::abort();
         }
-        return static_cast<u8>(vaddr);
-    }
-    std::uint16_t MemoryRead16(u32 vaddr) override {
-        return u16(MemoryRead8(vaddr)) | u16(MemoryRead8(vaddr + 1)) << 8;
-    }
-    std::uint32_t MemoryRead32(u32 vaddr) override {
-        return u32(MemoryRead16(vaddr)) | u32(MemoryRead16(vaddr + 2)) << 16;
-    }
-    std::uint64_t MemoryRead64(u32 vaddr) override {
-        return u64(MemoryRead32(vaddr)) | u64(MemoryRead32(vaddr + 4)) << 32;
     }
 
-    void MemoryWrite8(u32 vaddr, std::uint8_t value) override {
-        if (vaddr < code_mem.size() * sizeof(u32)) {
-            code_mem_modified_by_guest = true;
+    void MemoryWrite(Dynarmic::A32::VAddr vaddr, u64 value, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            MemoryWrite(vaddr, u32(value), sizeof(u32));
+            MemoryWrite(vaddr + 4, u32(value >> 32), sizeof(u32));
+            break;
+        case sizeof(u32):
+            MemoryWrite(vaddr, u16(value), sizeof(u16));
+            MemoryWrite(vaddr + 2, u16(value >> 16), sizeof(u16));
+            break;
+        case sizeof(u16):
+            MemoryWrite(vaddr, u8(value), sizeof(u8));
+            MemoryWrite(vaddr + 1, u8(value >> 8), sizeof(u8));
+            break;
+        case sizeof(u8):
+            if (vaddr < code_mem.size() * sizeof(u32))
+                code_mem_modified_by_guest = true;
+            modified_memory[vaddr] = value;
+            break;
+        default:
+            std::abort();
         }
-        modified_memory[vaddr] = value;
-    }
-    void MemoryWrite16(u32 vaddr, std::uint16_t value) override {
-        MemoryWrite8(vaddr, static_cast<u8>(value));
-        MemoryWrite8(vaddr + 1, static_cast<u8>(value >> 8));
-    }
-    void MemoryWrite32(u32 vaddr, std::uint32_t value) override {
-        MemoryWrite16(vaddr, static_cast<u16>(value));
-        MemoryWrite16(vaddr + 2, static_cast<u16>(value >> 16));
-    }
-    void MemoryWrite64(u32 vaddr, std::uint64_t value) override {
-        MemoryWrite32(vaddr, static_cast<u32>(value));
-        MemoryWrite32(vaddr + 4, static_cast<u32>(value >> 32));
     }
 
     void CallSVC(std::uint32_t swi) override {
@@ -143,46 +153,41 @@ public:
         return read<std::uint32_t>(vaddr);
     }
 
-    std::uint8_t MemoryRead8(std::uint32_t vaddr) override {
-        return read<std::uint8_t>(vaddr);
-    }
-    std::uint16_t MemoryRead16(std::uint32_t vaddr) override {
-        return read<std::uint16_t>(vaddr);
-    }
-    std::uint32_t MemoryRead32(std::uint32_t vaddr) override {
-        return read<std::uint32_t>(vaddr);
-    }
-    std::uint64_t MemoryRead64(std::uint32_t vaddr) override {
-        return read<std::uint64_t>(vaddr);
+    u64 MemoryRead(u32 vaddr, size_t size) override {
+        switch (size) {
+        case sizeof(u64): return read<u64>(vaddr);
+        case sizeof(u32): return read<u32>(vaddr);
+        case sizeof(u16): return read<u16>(vaddr);
+        case sizeof(u8): return read<u8>(vaddr);
+        default:
+            std::abort();
+        }
     }
 
-    void MemoryWrite8(std::uint32_t vaddr, std::uint8_t value) override {
-        write(vaddr, value);
-    }
-    void MemoryWrite16(std::uint32_t vaddr, std::uint16_t value) override {
-        write(vaddr, value);
-    }
-    void MemoryWrite32(std::uint32_t vaddr, std::uint32_t value) override {
-        write(vaddr, value);
-    }
-    void MemoryWrite64(std::uint32_t vaddr, std::uint64_t value) override {
-        write(vaddr, value);
+    void MemoryWrite(Dynarmic::A32::VAddr vaddr, std::uint64_t value, size_t size) override {
+        switch (size) {
+        case sizeof(u64): return write<u64>(vaddr, u64(value));
+        case sizeof(u32): return write<u32>(vaddr, u32(value));
+        case sizeof(u16): return write<u16>(vaddr, u16(value));
+        case sizeof(u8): return write<u8>(vaddr, u8(value));
+        default: std::abort();
+        }
     }
 
-    bool MemoryWriteExclusive8(std::uint32_t vaddr, std::uint8_t value, [[maybe_unused]] std::uint8_t expected) override {
-        MemoryWrite8(vaddr, value);
+    bool MemoryWriteExclusive8(Dynarmic::A32::VAddr vaddr, std::uint8_t value, [[maybe_unused]] std::uint8_t expected) override {
+        MemoryWrite(vaddr, value, sizeof(u8));
         return true;
     }
-    bool MemoryWriteExclusive16(std::uint32_t vaddr, std::uint16_t value, [[maybe_unused]] std::uint16_t expected) override {
-        MemoryWrite16(vaddr, value);
+    bool MemoryWriteExclusive16(Dynarmic::A32::VAddr vaddr, std::uint16_t value, [[maybe_unused]] std::uint16_t expected) override {
+        MemoryWrite(vaddr, value, sizeof(u16));
         return true;
     }
-    bool MemoryWriteExclusive32(std::uint32_t vaddr, std::uint32_t value, [[maybe_unused]] std::uint32_t expected) override {
-        MemoryWrite32(vaddr, value);
+    bool MemoryWriteExclusive32(Dynarmic::A32::VAddr vaddr, std::uint32_t value, [[maybe_unused]] std::uint32_t expected) override {
+        MemoryWrite(vaddr, value, sizeof(u32));
         return true;
     }
-    bool MemoryWriteExclusive64(std::uint32_t vaddr, std::uint64_t value, [[maybe_unused]] std::uint64_t expected) override {
-        MemoryWrite64(vaddr, value);
+    bool MemoryWriteExclusive64(Dynarmic::A32::VAddr vaddr, std::uint64_t value, [[maybe_unused]] std::uint64_t expected) override {
+        MemoryWrite(vaddr, value, sizeof(u64));
         return true;
     }
 

src/dynarmic/tests/A64/fibonacci.cpp

@@ -25,48 +25,55 @@ public:
     u64 ticks_left = 0;
     ::Common::unordered_map<u64, u8> memory{};
 
-    u8 MemoryRead8(u64 vaddr) override {
-        return memory[vaddr];
-    }
-
-    u16 MemoryRead16(u64 vaddr) override {
-        return u16(MemoryRead8(vaddr)) | u16(MemoryRead8(vaddr + 1)) << 8;
-    }
-
-    u32 MemoryRead32(u64 vaddr) override {
-        return u32(MemoryRead16(vaddr)) | u32(MemoryRead16(vaddr + 2)) << 16;
-    }
-
-    u64 MemoryRead64(u64 vaddr) override {
-        return u64(MemoryRead32(vaddr)) | u64(MemoryRead32(vaddr + 4)) << 32;
+    u64 MemoryRead(u64 vaddr, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            return MemoryRead(vaddr, sizeof(u32))
+                | MemoryRead(vaddr + sizeof(u32), sizeof(u32)) << 32;
+        case sizeof(u32):
+            return MemoryRead(vaddr, sizeof(u16))
+                | MemoryRead(vaddr + sizeof(u16), sizeof(u16)) << 16;
+        case sizeof(u16):
+            return MemoryRead(vaddr, sizeof(u8))
+                | MemoryRead(vaddr + sizeof(u8), sizeof(u8)) << 8;
+        case sizeof(u8):
+            return memory[vaddr];
+        default:
+            std::abort();
+        }
     }
 
     std::array<u64, 2> MemoryRead128(u64 vaddr) override {
-        return {MemoryRead64(vaddr), MemoryRead64(vaddr + 8)};
+        return {
+            MemoryRead(vaddr, sizeof(u64)),
+            MemoryRead(vaddr + sizeof(u64), sizeof(u64))
+        };
     }
 
-    void MemoryWrite8(u64 vaddr, u8 value) override {
-        memory[vaddr] = value;
+    void MemoryWrite(Dynarmic::A64::VAddr vaddr, u64 value, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            MemoryWrite(vaddr, u32(value), sizeof(u32));
+            MemoryWrite(vaddr + 4, u32(value >> 32), sizeof(u32));
+            break;
+        case sizeof(u32):
+            MemoryWrite(vaddr, u16(value), sizeof(u16));
+            MemoryWrite(vaddr + 2, u16(value >> 16), sizeof(u16));
+            break;
+        case sizeof(u16):
+            MemoryWrite(vaddr, u8(value), sizeof(u8));
+            MemoryWrite(vaddr + 1, u8(value >> 8), sizeof(u8));
+            break;
+        case sizeof(u8):
+            memory[vaddr] = value;
+            break;
+        default:
+            std::abort();
+        }
     }
-
-    void MemoryWrite16(u64 vaddr, u16 value) override {
-        MemoryWrite8(vaddr, u8(value));
-        MemoryWrite8(vaddr + 1, u8(value >> 8));
-    }
-
-    void MemoryWrite32(u64 vaddr, u32 value) override {
-        MemoryWrite16(vaddr, u16(value));
-        MemoryWrite16(vaddr + 2, u16(value >> 16));
-    }
-
-    void MemoryWrite64(u64 vaddr, u64 value) override {
-        MemoryWrite32(vaddr, u32(value));
-        MemoryWrite32(vaddr + 4, u32(value >> 32));
-    }
-
     void MemoryWrite128(u64 vaddr, std::array<u64, 2> value) override {
-        MemoryWrite64(vaddr, value[0]);
-        MemoryWrite64(vaddr + 8, value[1]);
+        MemoryWrite(vaddr, value[0], sizeof(u64));
+        MemoryWrite(vaddr + 8, value[1], sizeof(u64));
     }
 
     void CallSVC(u32) override {
@@ -135,9 +142,9 @@ TEST_CASE("A64: fibonacci", "[a64]") {
     code.RET();
 
     for (size_t i = 0; i < 1024; i++) {
-        env.MemoryWrite32(i * 4, instructions[i]);
+        env.MemoryWrite(i * 4, instructions[i], sizeof(u32));
     }
-    env.MemoryWrite32(8888, 0xd4200000);
+    env.MemoryWrite(8888, 0xd4200000, sizeof(u32));
     cpu.SetRegister(30, 8888);
 
     cpu.SetRegister(0, 10);

src/dynarmic/tests/A64/testenv.h

@@ -12,6 +12,7 @@
 #include "common/assert.h"
 #include "common/common_types.h"
 #include "dynarmic/interface/A64/a64.h"
+#include "dynarmic/interface/A64/config.h"
 
 using Vector = Dynarmic::A64::Vector;
 
@@ -34,64 +35,79 @@ public:
         return code_mem[index];
     }
 
-    std::uint8_t MemoryRead8(u64 vaddr) override {
-        if (IsInCodeMem(vaddr)) {
-            return reinterpret_cast<u8*>(code_mem.data())[vaddr - code_mem_start_address];
+    u64 MemoryRead(u64 vaddr, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            return MemoryRead(vaddr, sizeof(u32))
+                | MemoryRead(vaddr + sizeof(u32), sizeof(u32)) << 32;
+        case sizeof(u32):
+            return MemoryRead(vaddr, sizeof(u16))
+                | MemoryRead(vaddr + sizeof(u16), sizeof(u16)) << 16;
+        case sizeof(u16):
+            return MemoryRead(vaddr, sizeof(u8))
+                | MemoryRead(vaddr + sizeof(u8), sizeof(u8)) << 8;
+        case sizeof(u8): {
+            if (IsInCodeMem(vaddr))
+                return reinterpret_cast<u8*>(code_mem.data())[vaddr - code_mem_start_address];
+            if (auto const it = modified_memory.find(vaddr); it != modified_memory.end())
+                return it->second;
+            return u8(vaddr);
+        }
+        default:
+            std::abort();
         }
-        if (auto const it = modified_memory.find(vaddr); it != modified_memory.end())
-            return it->second;
-        return u8(vaddr);
-    }
-    std::uint16_t MemoryRead16(u64 vaddr) override {
-        return u16(MemoryRead8(vaddr)) | u16(MemoryRead8(vaddr + 1)) << 8;
-    }
-    std::uint32_t MemoryRead32(u64 vaddr) override {
-        return u32(MemoryRead16(vaddr)) | u32(MemoryRead16(vaddr + 2)) << 16;
-    }
-    std::uint64_t MemoryRead64(u64 vaddr) override {
-        return u64(MemoryRead32(vaddr)) | u64(MemoryRead32(vaddr + 4)) << 32;
-    }
-    Vector MemoryRead128(u64 vaddr) override {
-        return {MemoryRead64(vaddr), MemoryRead64(vaddr + 8)};
     }
 
-    void MemoryWrite8(u64 vaddr, std::uint8_t value) override {
-        if (IsInCodeMem(vaddr)) {
-            code_mem_modified_by_guest = true;
+    Vector MemoryRead128(u64 vaddr) override {
+        return {
+            MemoryRead(vaddr, sizeof(u64)),
+            MemoryRead(vaddr + 8, sizeof(u64))
+        };
+    }
+
+    void MemoryWrite(Dynarmic::A64::VAddr vaddr, u64 value, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            MemoryWrite(vaddr, u32(value), sizeof(u32));
+            MemoryWrite(vaddr + 4, u32(value >> 32), sizeof(u32));
+            break;
+        case sizeof(u32):
+            MemoryWrite(vaddr, u16(value), sizeof(u16));
+            MemoryWrite(vaddr + 2, u16(value >> 16), sizeof(u16));
+            break;
+        case sizeof(u16):
+            MemoryWrite(vaddr, u8(value), sizeof(u8));
+            MemoryWrite(vaddr + 1, u8(value >> 8), sizeof(u8));
+            break;
+        case sizeof(u8):
+            if (IsInCodeMem(vaddr)) {
+                code_mem_modified_by_guest = true;
+            }
+            modified_memory[vaddr] = value;
+            break;
+        default:
+            std::abort();
         }
-        modified_memory[vaddr] = value;
-    }
-    void MemoryWrite16(u64 vaddr, std::uint16_t value) override {
-        MemoryWrite8(vaddr, u8(value));
-        MemoryWrite8(vaddr + 1, u8(value >> 8));
-    }
-    void MemoryWrite32(u64 vaddr, std::uint32_t value) override {
-        MemoryWrite16(vaddr, u16(value));
-        MemoryWrite16(vaddr + 2, u16(value >> 16));
-    }
-    void MemoryWrite64(u64 vaddr, std::uint64_t value) override {
-        MemoryWrite32(vaddr, u32(value));
-        MemoryWrite32(vaddr + 4, u32(value >> 32));
     }
     void MemoryWrite128(u64 vaddr, Vector value) override {
-        MemoryWrite64(vaddr, value[0]);
-        MemoryWrite64(vaddr + 8, value[1]);
+        MemoryWrite(vaddr, value[0], sizeof(u64));
+        MemoryWrite(vaddr + 8, value[1], sizeof(u64));
     }
 
     bool MemoryWriteExclusive8(u64 vaddr, std::uint8_t value, [[maybe_unused]] std::uint8_t expected) override {
-        MemoryWrite8(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u8));
         return true;
     }
     bool MemoryWriteExclusive16(u64 vaddr, std::uint16_t value, [[maybe_unused]] std::uint16_t expected) override {
-        MemoryWrite16(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u16));
         return true;
     }
     bool MemoryWriteExclusive32(u64 vaddr, std::uint32_t value, [[maybe_unused]] std::uint32_t expected) override {
-        MemoryWrite32(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u32));
         return true;
     }
     bool MemoryWriteExclusive64(u64 vaddr, std::uint64_t value, [[maybe_unused]] std::uint64_t expected) override {
-        MemoryWrite64(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u64));
         return true;
     }
     bool MemoryWriteExclusive128(u64 vaddr, Vector value, [[maybe_unused]] Vector expected) override {
@@ -145,52 +161,46 @@ public:
         return read<std::uint32_t>(vaddr);
     }
 
-    std::uint8_t MemoryRead8(u64 vaddr) override {
-        return read<std::uint8_t>(vaddr);
-    }
-    std::uint16_t MemoryRead16(u64 vaddr) override {
-        return read<std::uint16_t>(vaddr);
-    }
-    std::uint32_t MemoryRead32(u64 vaddr) override {
-        return read<std::uint32_t>(vaddr);
-    }
-    std::uint64_t MemoryRead64(u64 vaddr) override {
-        return read<std::uint64_t>(vaddr);
+    u64 MemoryRead(u64 vaddr, size_t size) override {
+        switch (size) {
+        case sizeof(u64): return read<u64>(vaddr);
+        case sizeof(u32): return read<u32>(vaddr);
+        case sizeof(u16): return read<u16>(vaddr);
+        case sizeof(u8): return read<u8>(vaddr);
+        default: std::abort();
+        }
     }
     Vector MemoryRead128(u64 vaddr) override {
         return read<Vector>(vaddr);
     }
 
-    void MemoryWrite8(u64 vaddr, std::uint8_t value) override {
-        write(vaddr, value);
-    }
-    void MemoryWrite16(u64 vaddr, std::uint16_t value) override {
-        write(vaddr, value);
-    }
-    void MemoryWrite32(u64 vaddr, std::uint32_t value) override {
-        write(vaddr, value);
-    }
-    void MemoryWrite64(u64 vaddr, std::uint64_t value) override {
-        write(vaddr, value);
+    void MemoryWrite(u64 vaddr, std::uint64_t value, size_t size) override {
+        switch (size) {
+        case sizeof(u64): return write<u64>(vaddr, u64(value));
+        case sizeof(u32): return write<u32>(vaddr, u32(value));
+        case sizeof(u16): return write<u16>(vaddr, u16(value));
+        case sizeof(u8): return write<u8>(vaddr, u8(value));
+        default: std::abort();
+        }
     }
     void MemoryWrite128(u64 vaddr, Vector value) override {
         write(vaddr, value);
     }
 
     bool MemoryWriteExclusive8(u64 vaddr, std::uint8_t value, [[maybe_unused]] std::uint8_t expected) override {
-        MemoryWrite8(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u8));
         return true;
     }
     bool MemoryWriteExclusive16(u64 vaddr, std::uint16_t value, [[maybe_unused]] std::uint16_t expected) override {
-        MemoryWrite16(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u16));
         return true;
     }
     bool MemoryWriteExclusive32(u64 vaddr, std::uint32_t value, [[maybe_unused]] std::uint32_t expected) override {
-        MemoryWrite32(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u32));
         return true;
     }
     bool MemoryWriteExclusive64(u64 vaddr, std::uint64_t value, [[maybe_unused]] std::uint64_t expected) override {
-        MemoryWrite64(vaddr, value);
+        MemoryWrite(vaddr, value, sizeof(u64));
         return true;
     }
     bool MemoryWriteExclusive128(u64 vaddr, Vector value, [[maybe_unused]] Vector expected) override {

src/dynarmic/tests/print_info.cpp

@@ -18,6 +18,7 @@
 #include <fmt/format.h>
 #include <fmt/ostream.h>
 #include <fmt/ranges.h>
+#include "dynarmic/frontend/A32/translate/translate_callbacks.h"
 #include "dynarmic/mcl/bit.hpp"
 #include "common/common_types.h"
 
@@ -118,36 +119,47 @@ public:
     u64 ticks_left = 0;
     std::map<u32, u8> memory;
 
-    std::uint8_t MemoryRead8(u32 vaddr) override {
-        if (auto iter = memory.find(vaddr); iter != memory.end()) {
-            return iter->second;
+    u64 MemoryRead(Dynarmic::A32::VAddr vaddr, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            return MemoryRead(vaddr, sizeof(u32))
+                | MemoryRead(vaddr + sizeof(u32), sizeof(u32)) << 32;
+        case sizeof(u32):
+            return MemoryRead(vaddr, sizeof(u16))
+                | MemoryRead(vaddr + sizeof(u16), sizeof(u16)) << 16;
+        case sizeof(u16):
+            return MemoryRead(vaddr, sizeof(u8))
+                | MemoryRead(vaddr + sizeof(u8), sizeof(u8)) << 8;
+        case sizeof(u8): {
+            if (auto const it = memory.find(vaddr); it != memory.end())
+                return it->second;
+            return 0;
+        }
+        default:
+            std::abort();
         }
-        return 0;
-    }
-    std::uint16_t MemoryRead16(u32 vaddr) override {
-        return u16(MemoryRead8(vaddr)) | u16(MemoryRead8(vaddr + 1)) << 8;
-    }
-    std::uint32_t MemoryRead32(u32 vaddr) override {
-        return u32(MemoryRead16(vaddr)) | u32(MemoryRead16(vaddr + 2)) << 16;
-    }
-    std::uint64_t MemoryRead64(u32 vaddr) override {
-        return u64(MemoryRead32(vaddr)) | u64(MemoryRead32(vaddr + 4)) << 32;
     }
 
-    void MemoryWrite8(u32 vaddr, std::uint8_t value) override {
-        memory[vaddr] = value;
-    }
-    void MemoryWrite16(u32 vaddr, std::uint16_t value) override {
-        MemoryWrite8(vaddr, static_cast<u8>(value));
-        MemoryWrite8(vaddr + 1, static_cast<u8>(value >> 8));
-    }
-    void MemoryWrite32(u32 vaddr, std::uint32_t value) override {
-        MemoryWrite16(vaddr, static_cast<u16>(value));
-        MemoryWrite16(vaddr + 2, static_cast<u16>(value >> 16));
-    }
-    void MemoryWrite64(u32 vaddr, std::uint64_t value) override {
-        MemoryWrite32(vaddr, static_cast<u32>(value));
-        MemoryWrite32(vaddr + 4, static_cast<u32>(value >> 32));
+    void MemoryWrite(Dynarmic::A32::VAddr vaddr, u64 value, size_t size) override {
+        switch (size) {
+        case sizeof(u64):
+            MemoryWrite(vaddr, u32(value), sizeof(u32));
+            MemoryWrite(vaddr + 4, u32(value >> 32), sizeof(u32));
+            break;
+        case sizeof(u32):
+            MemoryWrite(vaddr, u16(value), sizeof(u16));
+            MemoryWrite(vaddr + 2, u16(value >> 16), sizeof(u16));
+            break;
+        case sizeof(u16):
+            MemoryWrite(vaddr, u8(value), sizeof(u8));
+            MemoryWrite(vaddr + 1, u8(value >> 8), sizeof(u8));
+            break;
+        case sizeof(u8):
+            memory[vaddr] = value;
+            break;
+        default:
+            std::abort();
+        }
     }
 
     void CallSVC(std::uint32_t swi) override {
@@ -231,7 +243,7 @@ void ExecuteA32Instruction(u32 instruction) {
             if (const auto address = get_value()) {
                 fmt::print("value: ");
                 if (const auto value = get_value()) {
-                    env.MemoryWrite32(*address, *value);
+                    env.MemoryWrite(*address, *value, sizeof(u32));
                     fmt::print("> mem[{:#08x}] = {:#08x}\n", *address, *value);
                 }
             }
@@ -247,8 +259,8 @@ void ExecuteA32Instruction(u32 instruction) {
     cpu.SetFpscr(fpscr);
 
     const u32 initial_pc = regs[15];
-    env.MemoryWrite32(initial_pc + 0, instruction);
-    env.MemoryWrite32(initial_pc + 4, 0xEAFFFFFE);  // B +0
+    env.MemoryWrite(initial_pc + 0, instruction, sizeof(u32));
+    env.MemoryWrite(initial_pc + 4, 0xEAFFFFFE, sizeof(u32));  // B +0
 
     cpu.Run();
     fmt::print("{}", fmt::join(cpu.Disassemble(), "\n"));

src/dynarmic/tests/unicorn_emu/a32_unicorn.cpp

@@ -290,7 +290,7 @@ bool A32Unicorn<TestEnvironment>::UnmappedMemoryHook(uc_engine* uc, uc_mem_type
         auto page = std::make_unique<Page>();
         page->address = base_address;
         for (size_t i = 0; i < page->data.size(); ++i)
-            page->data[i] = this_->testenv.MemoryRead8(static_cast<u32>(base_address + i));
+            page->data[i] = u8(this_->testenv.MemoryRead(u32(base_address + i), sizeof(u8)));
 
         uc_err err = uc_mem_map_ptr(uc, base_address, page->data.size(), permissions, page->data.data());
         if (err == UC_ERR_MAP)
@@ -321,24 +321,7 @@ bool A32Unicorn<TestEnvironment>::UnmappedMemoryHook(uc_engine* uc, uc_mem_type
 template<class TestEnvironment>
 bool A32Unicorn<TestEnvironment>::MemoryWriteHook(uc_engine* /*uc*/, uc_mem_type /*type*/, u32 start_address, int size, u64 value, void* user_data) {
     auto* this_ = static_cast<A32Unicorn*>(user_data);
-
-    switch (size) {
-    case 1:
-        this_->testenv.MemoryWrite8(start_address, static_cast<u8>(value));
-        break;
-    case 2:
-        this_->testenv.MemoryWrite16(start_address, static_cast<u16>(value));
-        break;
-    case 4:
-        this_->testenv.MemoryWrite32(start_address, static_cast<u32>(value));
-        break;
-    case 8:
-        this_->testenv.MemoryWrite64(start_address, value);
-        break;
-    default:
-        UNREACHABLE();
-    }
-
+    this_->testenv.MemoryWrite(start_address, value, size);
     return true;
 }
 

src/dynarmic/tests/unicorn_emu/a64_unicorn.cpp

@@ -197,7 +197,7 @@ bool A64Unicorn::UnmappedMemoryHook(uc_engine* uc, uc_mem_type /*type*/, u64 sta
         auto page = std::make_unique<Page>();
         page->address = base_address;
         for (size_t i = 0; i < page->data.size(); ++i)
-            page->data[i] = this_->testenv.MemoryRead8(base_address + i);
+            page->data[i] = u8(this_->testenv.MemoryRead(base_address + i, sizeof(u8)));
 
         uc_err err = uc_mem_map_ptr(uc, base_address, page->data.size(), permissions, page->data.data());
         if (err == UC_ERR_MAP)
@@ -227,23 +227,6 @@ bool A64Unicorn::UnmappedMemoryHook(uc_engine* uc, uc_mem_type /*type*/, u64 sta
 
 bool A64Unicorn::MemoryWriteHook(uc_engine* /*uc*/, uc_mem_type /*type*/, u64 start_address, int size, u64 value, void* user_data) {
     auto* this_ = static_cast<A64Unicorn*>(user_data);
-
-    switch (size) {
-    case 1:
-        this_->testenv.MemoryWrite8(start_address, static_cast<u8>(value));
-        break;
-    case 2:
-        this_->testenv.MemoryWrite16(start_address, static_cast<u16>(value));
-        break;
-    case 4:
-        this_->testenv.MemoryWrite32(start_address, static_cast<u32>(value));
-        break;
-    case 8:
-        this_->testenv.MemoryWrite64(start_address, value);
-        break;
-    default:
-        UNREACHABLE();
-    }
-
+    this_->testenv.MemoryWrite(start_address, value, size);
     return true;
 }

src/hid_core/resources/npad/npad.cpp

@@ -398,21 +398,21 @@ void NPad::InitNewlyAddedController(Kernel::KernelCore& kernel, u64 aruid, Core:
 void NPad::WriteEmptyEntry(NpadInternalState* npad) {
     NPadGenericState dummy_pad_state{};
     NpadGcTriggerState dummy_gc_state{};
-    dummy_pad_state.sampling_number = npad->fullkey_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_pad_state.sampling_number = npad->fullkey_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->fullkey_lifo.WriteNextEntry(dummy_pad_state);
-    dummy_pad_state.sampling_number = npad->handheld_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_pad_state.sampling_number = npad->handheld_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->handheld_lifo.WriteNextEntry(dummy_pad_state);
-    dummy_pad_state.sampling_number = npad->joy_dual_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_pad_state.sampling_number = npad->joy_dual_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->joy_dual_lifo.WriteNextEntry(dummy_pad_state);
-    dummy_pad_state.sampling_number = npad->joy_left_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_pad_state.sampling_number = npad->joy_left_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->joy_left_lifo.WriteNextEntry(dummy_pad_state);
-    dummy_pad_state.sampling_number = npad->joy_right_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_pad_state.sampling_number = npad->joy_right_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->joy_right_lifo.WriteNextEntry(dummy_pad_state);
-    dummy_pad_state.sampling_number = npad->palma_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_pad_state.sampling_number = npad->palma_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->palma_lifo.WriteNextEntry(dummy_pad_state);
-    dummy_pad_state.sampling_number = npad->system_ext_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_pad_state.sampling_number = npad->system_ext_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->system_ext_lifo.WriteNextEntry(dummy_pad_state);
-    dummy_gc_state.sampling_number = npad->gc_trigger_lifo.ReadCurrentEntry().sampling_number + 1;
+    dummy_gc_state.sampling_number = npad->gc_trigger_lifo.ReadCurrentEntry().state.sampling_number + 1;
     npad->gc_trigger_lifo.WriteNextEntry(dummy_gc_state);
 }
 

src/video_core/host1x/codecs/vp9.cpp

@@ -892,28 +892,20 @@ void VpxRangeEncoder::Write(bool bit, s32 probability) {
     count += shift;
 
     if (count >= 0) {
-        auto const write_byte = [&](u8 byte) {
-            if (stream_pos == stream_data.size()) {
-                stream_data.push_back(byte);
-                ++stream_pos;
-            } else {
-                stream_data.insert(stream_data.begin() + stream_pos, byte);
-            }
-        };
-
         const s32 offset = shift - count;
+
         if (((low_value << (offset - 1)) >> 31) != 0) {
-            auto const current_pos = stream_pos;
-            --stream_pos;
-            while (stream_data[stream_pos] == 0xff) {
-                write_byte(0);
-                stream_pos -= 2;
+            const s32 current_pos = static_cast<s32>(base_stream.GetPosition());
+            base_stream.Seek(-1, Common::SeekOrigin::FromCurrentPos);
+            while (PeekByte() == 0xff) {
+                base_stream.WriteByte(0);
+
+                base_stream.Seek(-2, Common::SeekOrigin::FromCurrentPos);
             }
-            write_byte(stream_data[stream_pos] + 1);
-            stream_pos = current_pos;
+            base_stream.WriteByte(static_cast<u8>((PeekByte() + 1)));
+            base_stream.Seek(current_pos, Common::SeekOrigin::SetOrigin);
         }
-        write_byte(u8((low_value >> (24 - offset))));
-        ++stream_pos;
+        base_stream.WriteByte(static_cast<u8>((low_value >> (24 - offset))));
 
         low_value <<= offset;
         shift = count;
@@ -931,6 +923,13 @@ void VpxRangeEncoder::End() {
     }
 }
 
+u8 VpxRangeEncoder::PeekByte() {
+    const u8 value = base_stream.ReadByte();
+    base_stream.Seek(-1, Common::SeekOrigin::FromCurrentPos);
+
+    return value;
+}
+
 VpxBitStreamWriter::VpxBitStreamWriter() = default;
 
 VpxBitStreamWriter::~VpxBitStreamWriter() = default;

src/video_core/host1x/codecs/vp9.h

@@ -12,6 +12,7 @@
 
 #include "common/common_types.h"
 #include "common/scratch_buffer.h"
+#include "common/stream.h"
 #include "video_core/host1x/codecs/decoder.h"
 #include "video_core/host1x/codec_types.h"
 #include "video_core/host1x/nvdec_common.h"
@@ -51,19 +52,16 @@ public:
     void End();
 
     [[nodiscard]] std::vector<u8>& GetBuffer() {
-        return stream_data;
+        return base_stream.GetBuffer();
     }
 
     [[nodiscard]] const std::vector<u8>& GetBuffer() const {
-        return stream_data;
+        return base_stream.GetBuffer();
     }
 
 private:
     u8 PeekByte();
-
-    std::vector<u8> stream_data{};
-    size_t stream_pos;
-
+    Common::Stream base_stream{};
     u32 low_value{};
     u32 range{0xff};
     s32 count{-24};

src/video_core/renderer_vulkan/vk_texture_cache.cpp

@@ -2850,8 +2850,6 @@ Sampler::VariantKey Sampler::MakeKey(const ImageView& image_view, bool is_depth)
     VariantKey key{};
     key.reduce_anisotropy = has_added_anisotropy && !image_view.SupportsAnisotropy();
     key.force_nearest = has_linear_filtering && IsPixelFormatInteger(image_view.format);
-    key.drop_depth_comparison =
-        is_depth && has_depth_comparison && !image_view.SupportsDepthComparison();
     key.drop_reduction = has_minmax_reduction && !image_view.SupportsMinmaxFilter();
     key.drop_custom_border = has_custom_border_colors && image_view.RequiresBorderColorFormat();
     key.srgb_border = has_srgb_border_color && IsPixelFormatSRGB(image_view.format);
@@ -2929,9 +2927,6 @@ VkSampler Sampler::Emplace(VariantKey key) {
         create_info.anisotropyEnable = static_cast<VkBool32>(default_anisotropy > 1.0f);
         create_info.maxAnisotropy = default_anisotropy;
     }
-    if (key.drop_depth_comparison) {
-        create_info.compareEnable = VK_FALSE;
-    }
     if (!custom_border) {
         create_info.borderColor = ConvertBorderColor(color);
     }

src/video_core/renderer_vulkan/vk_texture_cache.h

@@ -536,7 +536,6 @@ private:
     struct VariantKey {
         bool reduce_anisotropy;
         bool force_nearest;
-        bool drop_depth_comparison;
         bool drop_reduction;
         bool drop_custom_border;
         bool srgb_border;