3 files changed, 1510 insertions, 0 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index b0a010846..4ca68a309 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -166,6 +166,8 @@ add_library(core STATIC
     hle/kernel/memory/page_linked_list.h
     hle/kernel/memory/page_heap.cpp
     hle/kernel/memory/page_heap.h
+    hle/kernel/memory/page_table.cpp
+    hle/kernel/memory/page_table.h
     hle/kernel/memory/slab_heap.h
     hle/kernel/memory/system_control.cpp
     hle/kernel/memory/system_control.h
diff --git a/src/core/hle/kernel/memory/page_table.cpp b/src/core/hle/kernel/memory/page_table.cpp
new file mode 100644
index 000000000..01f9e99eb
--- /dev/null
+++ b/src/core/hle/kernel/memory/page_table.cpp
@@ -0,0 +1,1234 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/alignment.h"
+#include "common/assert.h"
+#include "common/scope_exit.h"
+#include "core/core.h"
+#include "core/device_memory.h"
+#include "core/hle/kernel/errors.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/hle/kernel/memory/address_space_info.h"
+#include "core/hle/kernel/memory/memory_block.h"
+#include "core/hle/kernel/memory/memory_block_manager.h"
+#include "core/hle/kernel/memory/page_linked_list.h"
+#include "core/hle/kernel/memory/page_table.h"
+#include "core/hle/kernel/memory/system_control.h"
+#include "core/hle/kernel/process.h"
+#include "core/hle/kernel/resource_limit.h"
+#include "core/memory.h"
+
+namespace Kernel::Memory {
+
+namespace {
+
+constexpr std::size_t GetAddressSpaceWidthFromType(FileSys::ProgramAddressSpaceType as_type) {
+    switch (as_type) {
+    case FileSys::ProgramAddressSpaceType::Is32Bit:
+    case FileSys::ProgramAddressSpaceType::Is32BitNoMap:
+        return 32;
+    case FileSys::ProgramAddressSpaceType::Is36Bit:
+        return 36;
+    case FileSys::ProgramAddressSpaceType::Is39Bit:
+        return 39;
+    default:
+        UNREACHABLE();
+        return {};
+    }
+}
+
+constexpr u64 GetAddressInRange(const MemoryInfo& info, VAddr addr) {
+    if (info.GetAddress() < addr) {
+        return addr;
+    }
+    return info.GetAddress();
+}
+
+constexpr std::size_t GetSizeInRange(const MemoryInfo& info, VAddr start, VAddr end) {
+    std::size_t size{info.GetSize()};
+    if (info.GetAddress() < start) {
+        size -= start - info.GetAddress();
+    }
+    if (info.GetEndAddress() > end) {
+        size -= info.GetEndAddress() - end;
+    }
+    return size;
+}
+
+} // namespace
+
+PageTable::PageTable(Core::System& system) : system{system} {}
+
+ResultCode PageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type,
+                                           bool enable_aslr, VAddr code_addr, std::size_t code_size,
+                                           Memory::MemoryManager::Pool pool) {
+
+    const auto GetSpaceStart = [&](AddressSpaceInfo::Type type) {
+        return AddressSpaceInfo::GetAddressSpaceStart(address_space_width, type);
+    };
+    const auto GetSpaceSize = [&](AddressSpaceInfo::Type type) {
+        return AddressSpaceInfo::GetAddressSpaceSize(address_space_width, type);
+    };
+
+    //  Set our width and heap/alias sizes
+    address_space_width = GetAddressSpaceWidthFromType(as_type);
+    const VAddr start = 0;
+    const VAddr end{1ULL << address_space_width};
+    std::size_t alias_region_size{GetSpaceSize(AddressSpaceInfo::Type::Alias)};
+    std::size_t heap_region_size{GetSpaceSize(AddressSpaceInfo::Type::Heap)};
+
+    ASSERT(start <= code_addr);
+    ASSERT(code_addr < code_addr + code_size);
+    ASSERT(code_addr + code_size - 1 <= end - 1);
+
+    // Adjust heap/alias size if we don't have an alias region
+    if (as_type == FileSys::ProgramAddressSpaceType::Is32BitNoMap) {
+        heap_region_size += alias_region_size;
+        alias_region_size = 0;
+    }
+
+    // Set code regions and determine remaining
+    constexpr std::size_t RegionAlignment{2 * 1024 * 1024};
+    VAddr process_code_start{};
+    VAddr process_code_end{};
+    std::size_t stack_region_size{};
+    std::size_t kernel_map_region_size{};
+
+    if (address_space_width == 39) {
+        alias_region_size = GetSpaceSize(AddressSpaceInfo::Type::Alias);
+        heap_region_size = GetSpaceSize(AddressSpaceInfo::Type::Heap);
+        stack_region_size = GetSpaceSize(AddressSpaceInfo::Type::Stack);
+        kernel_map_region_size = GetSpaceSize(AddressSpaceInfo::Type::Is32Bit);
+        code_region_start = GetSpaceStart(AddressSpaceInfo::Type::Large64Bit);
+        code_region_end = code_region_start + GetSpaceSize(AddressSpaceInfo::Type::Large64Bit);
+        alias_code_region_start = code_region_start;
+        alias_code_region_end = code_region_end;
+        process_code_start = Common::AlignDown(code_addr, RegionAlignment);
+        process_code_end = Common::AlignUp(code_addr + code_size, RegionAlignment);
+    } else {
+        stack_region_size = 0;
+        kernel_map_region_size = 0;
+        code_region_start = GetSpaceStart(AddressSpaceInfo::Type::Is32Bit);
+        code_region_end = code_region_start + GetSpaceSize(AddressSpaceInfo::Type::Is32Bit);
+        stack_region_start = code_region_start;
+        alias_code_region_start = code_region_start;
+        alias_code_region_end = GetSpaceStart(AddressSpaceInfo::Type::Small64Bit) +
+                                GetSpaceSize(AddressSpaceInfo::Type::Small64Bit);
+        stack_region_end = code_region_end;
+        kernel_map_region_start = code_region_start;
+        kernel_map_region_end = code_region_end;
+        process_code_start = code_region_start;
+        process_code_end = code_region_end;
+    }
+
+    // Set other basic fields
+    is_aslr_enabled = enable_aslr;
+    address_space_start = start;
+    address_space_end = end;
+    is_kernel = false;
+
+    // Determine the region we can place our undetermineds in
+    VAddr alloc_start{};
+    std::size_t alloc_size{};
+    if ((process_code_start - code_region_start) >= (end - process_code_end)) {
+        alloc_start = code_region_start;
+        alloc_size = process_code_start - code_region_start;
+    } else {
+        alloc_start = process_code_end;
+        alloc_size = end - process_code_end;
+    }
+    const std::size_t needed_size{
+        (alias_region_size + heap_region_size + stack_region_size + kernel_map_region_size)};
+    if (alloc_size < needed_size) {
+        UNREACHABLE();
+        return ERR_OUT_OF_MEMORY;
+    }
+
+    const std::size_t remaining_size{alloc_size - needed_size};
+
+    // Determine random placements for each region
+    std::size_t alias_rnd{}, heap_rnd{}, stack_rnd{}, kmap_rnd{};
+    if (enable_aslr) {
+        alias_rnd = SystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
+                    RegionAlignment;
+        heap_rnd = SystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
+                   RegionAlignment;
+        stack_rnd = SystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
+                    RegionAlignment;
+        kmap_rnd = SystemControl::GenerateRandomRange(0, remaining_size / RegionAlignment) *
+                   RegionAlignment;
+    }
+
+    // Setup heap and alias regions
+    alias_region_start = alloc_start + alias_rnd;
+    alias_region_end = alias_region_start + alias_region_size;
+    heap_region_start = alloc_start + heap_rnd;
+    heap_region_end = heap_region_start + heap_region_size;
+
+    if (alias_rnd <= heap_rnd) {
+        heap_region_start += alias_region_size;
+        heap_region_end += alias_region_size;
+    } else {
+        alias_region_start += heap_region_size;
+        alias_region_end += heap_region_size;
+    }
+
+    // Setup stack region
+    if (stack_region_size) {
+        stack_region_start = alloc_start + stack_rnd;
+        stack_region_end = stack_region_start + stack_region_size;
+
+        if (alias_rnd < stack_rnd) {
+            stack_region_start += alias_region_size;
+            stack_region_end += alias_region_size;
+        } else {
+            alias_region_start += stack_region_size;
+            alias_region_end += stack_region_size;
+        }
+
+        if (heap_rnd < stack_rnd) {
+            stack_region_start += heap_region_size;
+            stack_region_end += heap_region_size;
+        } else {
+            heap_region_start += stack_region_size;
+            heap_region_end += stack_region_size;
+        }
+    }
+
+    // Setup kernel map region
+    if (kernel_map_region_size) {
+        kernel_map_region_start = alloc_start + kmap_rnd;
+        kernel_map_region_end = kernel_map_region_start + kernel_map_region_size;
+
+        if (alias_rnd < kmap_rnd) {
+            kernel_map_region_start += alias_region_size;
+            kernel_map_region_end += alias_region_size;
+        } else {
+            alias_region_start += kernel_map_region_size;
+            alias_region_end += kernel_map_region_size;
+        }
+
+        if (heap_rnd < kmap_rnd) {
+            kernel_map_region_start += heap_region_size;
+            kernel_map_region_end += heap_region_size;
+        } else {
+            heap_region_start += kernel_map_region_size;
+            heap_region_end += kernel_map_region_size;
+        }
+
+        if (stack_region_size) {
+            if (stack_rnd < kmap_rnd) {
+                kernel_map_region_start += stack_region_size;
+                kernel_map_region_end += stack_region_size;
+            } else {
+                stack_region_start += kernel_map_region_size;
+                stack_region_end += kernel_map_region_size;
+            }
+        }
+    }
+
+    // Set heap members
+    current_heap_end = heap_region_start;
+    max_heap_size = 0;
+    max_physical_memory_size = 0;
+
+    // Ensure that we regions inside our address space
+    auto IsInAddressSpace = [&](VAddr addr) {
+        return address_space_start <= addr && addr <= address_space_end;
+    };
+    ASSERT(IsInAddressSpace(alias_region_start));
+    ASSERT(IsInAddressSpace(alias_region_end));
+    ASSERT(IsInAddressSpace(heap_region_start));
+    ASSERT(IsInAddressSpace(heap_region_end));
+    ASSERT(IsInAddressSpace(stack_region_start));
+    ASSERT(IsInAddressSpace(stack_region_end));
+    ASSERT(IsInAddressSpace(kernel_map_region_start));
+    ASSERT(IsInAddressSpace(kernel_map_region_end));
+
+    // Ensure that we selected regions that don't overlap
+    const VAddr alias_start{alias_region_start};
+    const VAddr alias_last{alias_region_end - 1};
+    const VAddr heap_start{heap_region_start};
+    const VAddr heap_last{heap_region_end - 1};
+    const VAddr stack_start{stack_region_start};
+    const VAddr stack_last{stack_region_end - 1};
+    const VAddr kmap_start{kernel_map_region_start};
+    const VAddr kmap_last{kernel_map_region_end - 1};
+    ASSERT(alias_last < heap_start || heap_last < alias_start);
+    ASSERT(alias_last < stack_start || stack_last < alias_start);
+    ASSERT(alias_last < kmap_start || kmap_last < alias_start);
+    ASSERT(heap_last < stack_start || stack_last < heap_start);
+    ASSERT(heap_last < kmap_start || kmap_last < heap_start);
+
+    current_heap_addr = heap_region_start;
+    heap_capacity = 0;
+    physical_memory_usage = 0;
+    memory_pool = pool;
+
+    page_table_impl.Resize(address_space_width, PageBits, true);
+
+    return InitializeMemoryLayout(start, end);
+}
+
+ResultCode PageTable::MapProcessCode(VAddr addr, std::size_t num_pages, MemoryState state,
+                                     MemoryPermission perm) {
+    std::lock_guard lock{page_table_lock};
+
+    const u64 size{num_pages * PageSize};
+
+    if (!CanContain(addr, size, state)) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    if (IsRegionMapped(addr, size)) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    PageLinkedList page_linked_list;
+    if (const ResultCode result{
+            system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool)};
+        result.IsError()) {
+        return result;
+    }
+
+    if (const ResultCode result{
+            Operate(addr, num_pages, page_linked_list, OperationType::MapGroup)};
+        result.IsError()) {
+        return result;
+    }
+
+    block_manager->Update(addr, num_pages, state, perm);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    const std::size_t num_pages{size / PageSize};
+
+    MemoryState state{};
+    MemoryPermission perm{};
+    if (const ResultCode result{CheckMemoryState(
+            &state, &perm, nullptr, src_addr, size, MemoryState::All, MemoryState::Normal,
+            MemoryPermission::Mask, MemoryPermission::ReadAndWrite, MemoryAttribute::Mask,
+            MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    if (IsRegionMapped(dst_addr, size)) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    PageLinkedList page_linked_list;
+    AddRegionToPages(src_addr, num_pages, page_linked_list);
+
+    {
+        auto block_guard = detail::ScopeExit(
+            [&] { Operate(src_addr, num_pages, perm, OperationType::ChangePermissions); });
+
+        if (const ResultCode result{Operate(src_addr, num_pages, MemoryPermission::None,
+                                            OperationType::ChangePermissions)};
+            result.IsError()) {
+            return result;
+        }
+
+        if (const ResultCode result{MapPages(dst_addr, page_linked_list, MemoryPermission::None)};
+            result.IsError()) {
+            return result;
+        }
+
+        block_guard.Cancel();
+    }
+
+    block_manager->Update(src_addr, num_pages, state, MemoryPermission::None,
+                          MemoryAttribute::Locked);
+    block_manager->Update(dst_addr, num_pages, MemoryState::AliasCode);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::UnmapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    if (!size) {
+        return RESULT_SUCCESS;
+    }
+
+    const std::size_t num_pages{size / PageSize};
+
+    if (const ResultCode result{CheckMemoryState(
+            nullptr, nullptr, nullptr, src_addr, size, MemoryState::All, MemoryState::Normal,
+            MemoryPermission::None, MemoryPermission::None, MemoryAttribute::Mask,
+            MemoryAttribute::Locked, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    MemoryState state{};
+    if (const ResultCode result{CheckMemoryState(
+            &state, nullptr, nullptr, dst_addr, PageSize, MemoryState::FlagCanCodeAlias,
+            MemoryState::FlagCanCodeAlias, MemoryPermission::None, MemoryPermission::None,
+            MemoryAttribute::Mask, MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    if (const ResultCode result{CheckMemoryState(dst_addr, size, MemoryState::All, state,
+                                                 MemoryPermission::None, MemoryPermission::None,
+                                                 MemoryAttribute::Mask, MemoryAttribute::None)};
+        result.IsError()) {
+        return result;
+    }
+
+    if (const ResultCode result{
+            Operate(dst_addr, num_pages, MemoryPermission::None, OperationType::Unmap)};
+        result.IsError()) {
+        return result;
+    }
+
+    block_manager->Update(dst_addr, num_pages, MemoryState::Free);
+    block_manager->Update(src_addr, num_pages, MemoryState::Normal, MemoryPermission::ReadAndWrite);
+
+    return RESULT_SUCCESS;
+}
+
+void PageTable::MapPhysicalMemory(PageLinkedList& page_linked_list, VAddr start, VAddr end) {
+    auto node{page_linked_list.Nodes().begin()};
+    PAddr map_addr{node->GetAddress()};
+    std::size_t src_num_pages{node->GetNumPages()};
+
+    block_manager->IterateForRange(start, end, [&](const MemoryInfo& info) {
+        if (info.state != MemoryState::Free) {
+            return;
+        }
+
+        std::size_t dst_num_pages{GetSizeInRange(info, start, end) / PageSize};
+        VAddr dst_addr{GetAddressInRange(info, start)};
+
+        while (dst_num_pages) {
+            if (!src_num_pages) {
+                node = std::next(node);
+                map_addr = node->GetAddress();
+                src_num_pages = node->GetNumPages();
+            }
+
+            const std::size_t num_pages{std::min(src_num_pages, dst_num_pages)};
+            Operate(dst_addr, num_pages, MemoryPermission::ReadAndWrite, OperationType::Map,
+                    map_addr);
+
+            dst_addr += num_pages * PageSize;
+            map_addr += num_pages * PageSize;
+            src_num_pages -= num_pages;
+            dst_num_pages -= num_pages;
+        }
+    });
+}
+
+ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    std::size_t mapped_size{};
+    const VAddr end_addr{addr + size};
+
+    block_manager->IterateForRange(addr, end_addr, [&](const MemoryInfo& info) {
+        if (info.state != MemoryState::Free) {
+            mapped_size += GetSizeInRange(info, addr, end_addr);
+        }
+    });
+
+    if (mapped_size == size) {
+        return RESULT_SUCCESS;
+    }
+
+    auto process{system.Kernel().CurrentProcess()};
+    const std::size_t remaining_size{size - mapped_size};
+    const std::size_t remaining_pages{remaining_size / PageSize};
+
+    if (process->GetResourceLimit() &&
+        !process->GetResourceLimit()->Reserve(ResourceType::PhysicalMemory, remaining_size)) {
+        return ERR_RESOURCE_LIMIT_EXCEEDED;
+    }
+
+    PageLinkedList page_linked_list;
+    {
+        auto block_guard = detail::ScopeExit([&] {
+            system.Kernel().MemoryManager().Free(page_linked_list, remaining_pages, memory_pool);
+            process->GetResourceLimit()->Release(ResourceType::PhysicalMemory, remaining_size);
+        });
+
+        if (const ResultCode result{system.Kernel().MemoryManager().Allocate(
+                page_linked_list, remaining_pages, memory_pool)};
+            result.IsError()) {
+            return result;
+        }
+
+        block_guard.Cancel();
+    }
+
+    MapPhysicalMemory(page_linked_list, addr, end_addr);
+
+    physical_memory_usage += remaining_size;
+
+    const std::size_t num_pages{size / PageSize};
+    block_manager->Update(addr, num_pages, MemoryState::Free, MemoryPermission::None,
+                          MemoryAttribute::None, MemoryState::Normal,
+                          MemoryPermission::ReadAndWrite, MemoryAttribute::None);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    const VAddr end_addr{addr + size};
+    ResultCode result{RESULT_SUCCESS};
+    std::size_t mapped_size{};
+
+    // Verify that the region can be unmapped
+    block_manager->IterateForRange(addr, end_addr, [&](const MemoryInfo& info) {
+        if (info.state == MemoryState::Normal) {
+            if (info.attribute != MemoryAttribute::None) {
+                result = ERR_INVALID_ADDRESS_STATE;
+                return;
+            }
+            mapped_size += GetSizeInRange(info, addr, end_addr);
+        } else if (info.state != MemoryState::Free) {
+            result = ERR_INVALID_ADDRESS_STATE;
+        }
+    });
+
+    if (result.IsError()) {
+        return result;
+    }
+
+    if (!mapped_size) {
+        return RESULT_SUCCESS;
+    }
+
+    if (const ResultCode result{UnmapMemory(addr, size)}; result.IsError()) {
+        return result;
+    }
+
+    auto process{system.Kernel().CurrentProcess()};
+    process->GetResourceLimit()->Release(ResourceType::PhysicalMemory, mapped_size);
+    physical_memory_usage -= mapped_size;
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::UnmapMemory(VAddr addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    const VAddr end_addr{addr + size};
+    ResultCode result{RESULT_SUCCESS};
+    PageLinkedList page_linked_list;
+
+    // Unmap each region within the range
+    block_manager->IterateForRange(addr, end_addr, [&](const MemoryInfo& info) {
+        if (info.state == MemoryState::Normal) {
+            const std::size_t block_size{GetSizeInRange(info, addr, end_addr)};
+            const std::size_t block_num_pages{block_size / PageSize};
+            const VAddr block_addr{GetAddressInRange(info, addr)};
+
+            AddRegionToPages(block_addr, block_size / PageSize, page_linked_list);
+
+            if (result = Operate(block_addr, block_num_pages, MemoryPermission::None,
+                                 OperationType::Unmap);
+                result.IsError()) {
+                return;
+            }
+        }
+    });
+
+    if (result.IsError()) {
+        return result;
+    }
+
+    const std::size_t num_pages{size / PageSize};
+    system.Kernel().MemoryManager().Free(page_linked_list, num_pages, memory_pool);
+
+    block_manager->Update(addr, num_pages, MemoryState::Free);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::Map(VAddr dst_addr, VAddr src_addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    MemoryState src_state{};
+    if (const ResultCode result{CheckMemoryState(
+            &src_state, nullptr, nullptr, src_addr, size, MemoryState::FlagCanAlias,
+            MemoryState::FlagCanAlias, MemoryPermission::Mask, MemoryPermission::ReadAndWrite,
+            MemoryAttribute::Mask, MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    if (IsRegionMapped(dst_addr, size)) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    PageLinkedList page_linked_list;
+    const std::size_t num_pages{size / PageSize};
+
+    AddRegionToPages(src_addr, num_pages, page_linked_list);
+
+    {
+        auto block_guard = detail::ScopeExit([&] {
+            Operate(src_addr, num_pages, MemoryPermission::ReadAndWrite,
+                    OperationType::ChangePermissions);
+        });
+
+        if (const ResultCode result{Operate(src_addr, num_pages, MemoryPermission::None,
+                                            OperationType::ChangePermissions)};
+            result.IsError()) {
+            return result;
+        }
+
+        if (const ResultCode result{
+                MapPages(dst_addr, page_linked_list, MemoryPermission::ReadAndWrite)};
+            result.IsError()) {
+            return result;
+        }
+
+        block_guard.Cancel();
+    }
+
+    block_manager->Update(src_addr, num_pages, src_state, MemoryPermission::None,
+                          MemoryAttribute::Locked);
+    block_manager->Update(dst_addr, num_pages, MemoryState::Stack, MemoryPermission::ReadAndWrite);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    MemoryState src_state{};
+    if (const ResultCode result{CheckMemoryState(
+            &src_state, nullptr, nullptr, src_addr, size, MemoryState::FlagCanAlias,
+            MemoryState::FlagCanAlias, MemoryPermission::Mask, MemoryPermission::None,
+            MemoryAttribute::Mask, MemoryAttribute::Locked, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    MemoryPermission dst_perm{};
+    if (const ResultCode result{CheckMemoryState(
+            nullptr, &dst_perm, nullptr, dst_addr, size, MemoryState::All, MemoryState::Stack,
+            MemoryPermission::None, MemoryPermission::None, MemoryAttribute::Mask,
+            MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    PageLinkedList src_pages;
+    PageLinkedList dst_pages;
+    const std::size_t num_pages{size / PageSize};
+
+    AddRegionToPages(src_addr, num_pages, src_pages);
+    AddRegionToPages(dst_addr, num_pages, dst_pages);
+
+    if (!dst_pages.IsEqual(src_pages)) {
+        return ERR_INVALID_MEMORY_RANGE;
+    }
+
+    {
+        auto block_guard = detail::ScopeExit([&] { MapPages(dst_addr, dst_pages, dst_perm); });
+
+        if (const ResultCode result{
+                Operate(dst_addr, num_pages, MemoryPermission::None, OperationType::Unmap)};
+            result.IsError()) {
+            return result;
+        }
+
+        if (const ResultCode result{Operate(src_addr, num_pages, MemoryPermission::ReadAndWrite,
+                                            OperationType::ChangePermissions)};
+            result.IsError()) {
+            return result;
+        }
+
+        block_guard.Cancel();
+    }
+
+    block_manager->Update(src_addr, num_pages, src_state, MemoryPermission::ReadAndWrite);
+    block_manager->Update(dst_addr, num_pages, MemoryState::Free);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::MapPages(VAddr addr, const PageLinkedList& page_linked_list,
+                               MemoryPermission perm) {
+    VAddr cur_addr{addr};
+
+    for (const auto& node : page_linked_list.Nodes()) {
+        if (const ResultCode result{
+                Operate(cur_addr, node.GetNumPages(), perm, OperationType::Map, node.GetAddress())};
+            result.IsError()) {
+            const MemoryInfo info{block_manager->FindBlock(cur_addr).GetMemoryInfo()};
+            const std::size_t num_pages{(addr - cur_addr) / PageSize};
+
+            ASSERT(
+                Operate(addr, num_pages, MemoryPermission::None, OperationType::Unmap).IsSuccess());
+
+            return result;
+        }
+
+        cur_addr += node.GetNumPages() * PageSize;
+    }
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::MapPages(VAddr addr, PageLinkedList& page_linked_list, MemoryState state,
+                               MemoryPermission perm) {
+    std::lock_guard lock{page_table_lock};
+
+    const std::size_t num_pages{page_linked_list.GetNumPages()};
+    const std::size_t size{num_pages * PageSize};
+
+    if (!CanContain(addr, size, state)) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    if (IsRegionMapped(addr, num_pages * PageSize)) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    if (const ResultCode result{MapPages(addr, page_linked_list, perm)}; result.IsError()) {
+        return result;
+    }
+
+    block_manager->Update(addr, num_pages, state, perm);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::SetCodeMemoryPermission(VAddr addr, std::size_t size, MemoryPermission perm) {
+
+    std::lock_guard lock{page_table_lock};
+
+    MemoryState prev_state{};
+    MemoryPermission prev_perm{};
+
+    if (const ResultCode result{CheckMemoryState(
+            &prev_state, &prev_perm, nullptr, addr, size, MemoryState::FlagCode,
+            MemoryState::FlagCode, MemoryPermission::None, MemoryPermission::None,
+            MemoryAttribute::Mask, MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    MemoryState state{prev_state};
+
+    // Ensure state is mutable if permission allows write
+    if ((perm & MemoryPermission::Write) != MemoryPermission::None) {
+        if (prev_state == MemoryState::Code) {
+            state = MemoryState::CodeData;
+        } else if (prev_state == MemoryState::AliasCode) {
+            state = MemoryState::AliasCodeData;
+        } else {
+            UNREACHABLE();
+        }
+    }
+
+    // Return early if there is nothing to change
+    if (state == prev_state && perm == prev_perm) {
+        return RESULT_SUCCESS;
+    }
+
+    const std::size_t num_pages{size / PageSize};
+    const OperationType operation{(perm & MemoryPermission::Execute) != MemoryPermission::None
+                                      ? OperationType::ChangePermissionsAndRefresh
+                                      : OperationType::ChangePermissions};
+
+    if (const ResultCode result{Operate(addr, num_pages, perm, operation)}; result.IsError()) {
+        return result;
+    }
+
+    block_manager->Update(addr, num_pages, state, perm);
+
+    return RESULT_SUCCESS;
+}
+
+MemoryInfo PageTable::QueryInfoImpl(VAddr addr) {
+    std::lock_guard lock{page_table_lock};
+
+    return block_manager->FindBlock(addr).GetMemoryInfo();
+}
+
+MemoryInfo PageTable::QueryInfo(VAddr addr) {
+    if (!Contains(addr, 1)) {
+        return {address_space_end,      0 - address_space_end, MemoryState::Inaccessible,
+                MemoryPermission::None, MemoryAttribute::None, MemoryPermission::None};
+    }
+
+    return QueryInfoImpl(addr);
+}
+
+ResultCode PageTable::ReserveTransferMemory(VAddr addr, std::size_t size, MemoryPermission perm) {
+    std::lock_guard lock{page_table_lock};
+
+    MemoryState state{};
+    MemoryAttribute attribute{};
+
+    if (const ResultCode result{CheckMemoryState(
+            &state, nullptr, &attribute, addr, size,
+            MemoryState::FlagCanTransfer | MemoryState::FlagReferenceCounted,
+            MemoryState::FlagCanTransfer | MemoryState::FlagReferenceCounted,
+            MemoryPermission::Mask, MemoryPermission::ReadAndWrite, MemoryAttribute::Mask,
+            MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    block_manager->Update(addr, size / PageSize, state, perm, attribute | MemoryAttribute::Locked);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::ResetTransferMemory(VAddr addr, std::size_t size) {
+    std::lock_guard lock{page_table_lock};
+
+    MemoryState state{};
+
+    if (const ResultCode result{
+            CheckMemoryState(&state, nullptr, nullptr, addr, size,
+                             MemoryState::FlagCanTransfer | MemoryState::FlagReferenceCounted,
+                             MemoryState::FlagCanTransfer | MemoryState::FlagReferenceCounted,
+                             MemoryPermission::None, MemoryPermission::None, MemoryAttribute::Mask,
+                             MemoryAttribute::Locked, MemoryAttribute::IpcAndDeviceMapped)};
+        result.IsError()) {
+        return result;
+    }
+
+    block_manager->Update(addr, size / PageSize, state, MemoryPermission::ReadAndWrite);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::SetMemoryAttribute(VAddr addr, std::size_t size, MemoryAttribute mask,
+                                         MemoryAttribute value) {
+    std::lock_guard lock{page_table_lock};
+
+    MemoryState state{};
+    MemoryPermission perm{};
+    MemoryAttribute attribute{};
+
+    if (const ResultCode result{CheckMemoryState(
+            &state, &perm, &attribute, addr, size, MemoryState::FlagCanChangeAttribute,
+            MemoryState::FlagCanChangeAttribute, MemoryPermission::None, MemoryPermission::None,
+            MemoryAttribute::LockedAndIpcLocked, MemoryAttribute::None,
+            MemoryAttribute::DeviceSharedAndUncached)};
+        result.IsError()) {
+        return result;
+    }
+
+    attribute = attribute & ~mask;
+    attribute = attribute | (mask & value);
+
+    block_manager->Update(addr, size / PageSize, state, perm, attribute);
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::SetHeapCapacity(std::size_t new_heap_capacity) {
+    std::lock_guard lock{page_table_lock};
+    heap_capacity = new_heap_capacity;
+    return RESULT_SUCCESS;
+}
+
+ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
+
+    if (size > heap_region_end - heap_region_start) {
+        return ERR_OUT_OF_MEMORY;
+    }
+
+    const u64 previous_heap_size{GetHeapSize()};
+
+    UNIMPLEMENTED_IF_MSG(previous_heap_size > size, "Heap shrink is unimplemented");
+
+    // Increase the heap size
+    {
+        std::lock_guard lock{page_table_lock};
+
+        const u64 delta{size - previous_heap_size};
+
+        auto process{system.Kernel().CurrentProcess()};
+        if (process->GetResourceLimit() && delta != 0 &&
+            !process->GetResourceLimit()->Reserve(ResourceType::PhysicalMemory, delta)) {
+            return ERR_RESOURCE_LIMIT_EXCEEDED;
+        }
+
+        PageLinkedList page_linked_list;
+        const std::size_t num_pages{delta / PageSize};
+
+        if (const ResultCode result{
+                system.Kernel().MemoryManager().Allocate(page_linked_list, num_pages, memory_pool)};
+            result.IsError()) {
+            return result;
+        }
+
+        if (IsRegionMapped(current_heap_addr, delta)) {
+            return ERR_INVALID_ADDRESS_STATE;
+        }
+
+        if (const ResultCode result{
+                Operate(current_heap_addr, num_pages, page_linked_list, OperationType::MapGroup)};
+            result.IsError()) {
+            return result;
+        }
+
+        block_manager->Update(current_heap_addr, num_pages, MemoryState::Normal,
+                              MemoryPermission::ReadAndWrite);
+
+        current_heap_addr = heap_region_start + size;
+    }
+
+    return MakeResult<VAddr>(heap_region_start);
+}
+
+ResultVal<VAddr> PageTable::AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,
+                                                 bool is_map_only, VAddr region_start,
+                                                 std::size_t region_num_pages, MemoryState state,
+                                                 MemoryPermission perm, PAddr map_addr) {
+    std::lock_guard lock{page_table_lock};
+
+    if (!CanContain(region_start, region_num_pages * PageSize, state)) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    if (region_num_pages <= needed_num_pages) {
+        return ERR_OUT_OF_MEMORY;
+    }
+
+    const VAddr addr{
+        AllocateVirtualMemory(region_start, region_num_pages, needed_num_pages, align)};
+    if (!addr) {
+        return ERR_OUT_OF_MEMORY;
+    }
+
+    if (is_map_only) {
+        if (const ResultCode result{
+                Operate(addr, needed_num_pages, perm, OperationType::Map, map_addr)};
+            result.IsError()) {
+            return result;
+        }
+    } else {
+        PageLinkedList page_group;
+        if (const ResultCode result{system.Kernel().MemoryManager().Allocate(
+                page_group, needed_num_pages, memory_pool)};
+            result.IsError()) {
+            return result;
+        }
+        if (const ResultCode result{
+                Operate(addr, needed_num_pages, page_group, OperationType::MapGroup)};
+            result.IsError()) {
+            return result;
+        }
+    }
+
+    block_manager->Update(addr, needed_num_pages, state, perm);
+
+    return MakeResult<VAddr>(addr);
+}
+
+PAddr PageTable::GetPhysicalAddr(VAddr addr) {
+    return system.GetDeviceMemory().GetPhysicalAddr(addr);
+}
+
+ResultCode PageTable::InitializeMemoryLayout(VAddr start, VAddr end) {
+    block_manager = std::make_unique<MemoryBlockManager>(start, end);
+
+    return RESULT_SUCCESS;
+}
+
+bool PageTable::IsRegionMapped(VAddr address, u64 size) {
+    return CheckMemoryState(address, size, MemoryState::All, MemoryState::Free,
+                            MemoryPermission::Mask, MemoryPermission::None, MemoryAttribute::Mask,
+                            MemoryAttribute::None, MemoryAttribute::IpcAndDeviceMapped)
+        .IsError();
+}
+
+bool PageTable::IsRegionContiguous(VAddr addr, u64 size) const {
+    auto start_ptr = system.Memory().GetPointer(addr);
+    for (u64 offset{}; offset < size; offset += PageSize) {
+        if (start_ptr != system.Memory().GetPointer(addr + offset)) {
+            return false;
+        }
+        start_ptr += PageSize;
+    }
+    return true;
+}
+
+void PageTable::AddRegionToPages(VAddr start, std::size_t num_pages,
+                                 PageLinkedList& page_linked_list) {
+    VAddr addr{start};
+    while (addr < start + (num_pages * PageSize)) {
+        const PAddr paddr{GetPhysicalAddr(addr)};
+        if (!paddr) {
+            UNREACHABLE();
+        }
+        page_linked_list.AddBlock(paddr, 1);
+        addr += PageSize;
+    }
+}
+
+VAddr PageTable::AllocateVirtualMemory(VAddr start, std::size_t region_num_pages,
+                                       u64 needed_num_pages, std::size_t align) {
+    if (is_aslr_enabled) {
+        UNIMPLEMENTED();
+    }
+    return block_manager->FindFreeArea(start, region_num_pages, needed_num_pages, align, 0,
+                                       IsKernel() ? 1 : 4);
+}
+
+ResultCode PageTable::Operate(VAddr addr, std::size_t num_pages, const PageLinkedList& page_group,
+                              OperationType operation) {
+    std::lock_guard lock{page_table_lock};
+
+    ASSERT(Common::IsAligned(addr, PageSize));
+    ASSERT(num_pages > 0);
+    ASSERT(num_pages == page_group.GetNumPages());
+
+    for (const auto& node : page_group.Nodes()) {
+        const std::size_t size{node.GetNumPages() * PageSize};
+
+        switch (operation) {
+        case OperationType::MapGroup:
+            system.Memory().MapMemoryRegion(page_table_impl, addr, size, node.GetAddress());
+            break;
+        default:
+            UNREACHABLE();
+        }
+
+        addr += size;
+    }
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::Operate(VAddr addr, std::size_t num_pages, MemoryPermission perm,
+                              OperationType operation, PAddr map_addr) {
+    std::lock_guard lock{page_table_lock};
+
+    ASSERT(num_pages > 0);
+    ASSERT(Common::IsAligned(addr, PageSize));
+    ASSERT(ContainsPages(addr, num_pages));
+
+    switch (operation) {
+    case OperationType::Unmap:
+        system.Memory().UnmapRegion(page_table_impl, addr, num_pages * PageSize);
+        break;
+    case OperationType::Map: {
+        ASSERT(map_addr);
+        ASSERT(Common::IsAligned(map_addr, PageSize));
+        system.Memory().MapMemoryRegion(page_table_impl, addr, num_pages * PageSize, map_addr);
+        break;
+    }
+    case OperationType::ChangePermissions:
+    case OperationType::ChangePermissionsAndRefresh:
+        break;
+    default:
+        UNREACHABLE();
+    }
+    return RESULT_SUCCESS;
+}
+
+constexpr VAddr PageTable::GetRegionAddress(MemoryState state) const {
+    switch (state) {
+    case MemoryState::Free:
+    case MemoryState::Kernel:
+        return address_space_start;
+    case MemoryState::Normal:
+        return heap_region_start;
+    case MemoryState::Ipc:
+    case MemoryState::NonSecureIpc:
+    case MemoryState::NonDeviceIpc:
+        return alias_region_start;
+    case MemoryState::Stack:
+        return stack_region_start;
+    case MemoryState::Io:
+    case MemoryState::Static:
+    case MemoryState::ThreadLocal:
+        return kernel_map_region_start;
+    case MemoryState::Shared:
+    case MemoryState::AliasCode:
+    case MemoryState::AliasCodeData:
+    case MemoryState::Transfered:
+    case MemoryState::SharedTransfered:
+    case MemoryState::SharedCode:
+    case MemoryState::GeneratedCode:
+    case MemoryState::CodeOut:
+        return alias_code_region_start;
+    case MemoryState::Code:
+    case MemoryState::CodeData:
+        return code_region_start;
+    default:
+        UNREACHABLE();
+        return {};
+    }
+}
+
+constexpr std::size_t PageTable::GetRegionSize(MemoryState state) const {
+    switch (state) {
+    case MemoryState::Free:
+    case MemoryState::Kernel:
+        return address_space_end - address_space_start;
+    case MemoryState::Normal:
+        return heap_region_end - heap_region_start;
+    case MemoryState::Ipc:
+    case MemoryState::NonSecureIpc:
+    case MemoryState::NonDeviceIpc:
+        return alias_region_end - alias_region_start;
+    case MemoryState::Stack:
+        return stack_region_end - stack_region_start;
+    case MemoryState::Io:
+    case MemoryState::Static:
+    case MemoryState::ThreadLocal:
+        return kernel_map_region_end - kernel_map_region_start;
+    case MemoryState::Shared:
+    case MemoryState::AliasCode:
+    case MemoryState::AliasCodeData:
+    case MemoryState::Transfered:
+    case MemoryState::SharedTransfered:
+    case MemoryState::SharedCode:
+    case MemoryState::GeneratedCode:
+    case MemoryState::CodeOut:
+        return alias_code_region_end - alias_code_region_start;
+    case MemoryState::Code:
+    case MemoryState::CodeData:
+        return code_region_end - code_region_start;
+    default:
+        UNREACHABLE();
+        return {};
+    }
+}
+
+constexpr bool PageTable::CanContain(VAddr addr, std::size_t size, MemoryState state) const {
+    const VAddr end{addr + size};
+    const VAddr last{end - 1};
+    const VAddr region_start{GetRegionAddress(state)};
+    const std::size_t region_size{GetRegionSize(state)};
+    const bool is_in_region{region_start <= addr && addr < end &&
+                            last <= region_start + region_size - 1};
+    const bool is_in_heap{!(end <= heap_region_start || heap_region_end <= addr)};
+    const bool is_in_alias{!(end <= alias_region_start || alias_region_end <= addr)};
+
+    switch (state) {
+    case MemoryState::Free:
+    case MemoryState::Kernel:
+        return is_in_region;
+    case MemoryState::Io:
+    case MemoryState::Static:
+    case MemoryState::Code:
+    case MemoryState::CodeData:
+    case MemoryState::Shared:
+    case MemoryState::AliasCode:
+    case MemoryState::AliasCodeData:
+    case MemoryState::Stack:
+    case MemoryState::ThreadLocal:
+    case MemoryState::Transfered:
+    case MemoryState::SharedTransfered:
+    case MemoryState::SharedCode:
+    case MemoryState::GeneratedCode:
+    case MemoryState::CodeOut:
+        return is_in_region && !is_in_heap && !is_in_alias;
+    case MemoryState::Normal:
+        ASSERT(is_in_heap);
+        return is_in_region && !is_in_alias;
+    case MemoryState::Ipc:
+    case MemoryState::NonSecureIpc:
+    case MemoryState::NonDeviceIpc:
+        ASSERT(is_in_alias);
+        return is_in_region && !is_in_heap;
+    default:
+        return false;
+    }
+}
+
+constexpr ResultCode PageTable::CheckMemoryState(const MemoryInfo& info, MemoryState state_mask,
+                                                 MemoryState state, MemoryPermission perm_mask,
+                                                 MemoryPermission perm, MemoryAttribute attr_mask,
+                                                 MemoryAttribute attr) const {
+    // Validate the states match expectation
+    if ((info.state & state_mask) != state) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+    if ((info.perm & perm_mask) != perm) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+    if ((info.attribute & attr_mask) != attr) {
+        return ERR_INVALID_ADDRESS_STATE;
+    }
+
+    return RESULT_SUCCESS;
+}
+
+ResultCode PageTable::CheckMemoryState(MemoryState* out_state, MemoryPermission* out_perm,
+                                       MemoryAttribute* out_attr, VAddr addr, std::size_t size,
+                                       MemoryState state_mask, MemoryState state,
+                                       MemoryPermission perm_mask, MemoryPermission perm,
+                                       MemoryAttribute attr_mask, MemoryAttribute attr,
+                                       MemoryAttribute ignore_attr) {
+    std::lock_guard lock{page_table_lock};
+
+    // Get information about the first block
+    const VAddr last_addr{addr + size - 1};
+    MemoryBlockManager::const_iterator it{block_manager->FindIterator(addr)};
+    MemoryInfo info{it->GetMemoryInfo()};
+
+    // Validate all blocks in the range have correct state
+    const MemoryState first_state{info.state};
+    const MemoryPermission first_perm{info.perm};
+    const MemoryAttribute first_attr{info.attribute};
+
+    while (true) {
+        // Validate the current block
+        if (!(info.state == first_state)) {
+            return ERR_INVALID_ADDRESS_STATE;
+        }
+        if (!(info.perm == first_perm)) {
+            return ERR_INVALID_ADDRESS_STATE;
+        }
+        if (!((info.attribute | static_cast<MemoryAttribute>(ignore_attr)) ==
+              (first_attr | static_cast<MemoryAttribute>(ignore_attr)))) {
+            return ERR_INVALID_ADDRESS_STATE;
+        }
+
+        // Validate against the provided masks
+        if (const ResultCode result{
+                CheckMemoryState(info, state_mask, state, perm_mask, perm, attr_mask, attr)};
+            result.IsError()) {
+            return result;
+        }
+
+        // Break once we're done
+        if (last_addr <= info.GetLastAddress()) {
+            break;
+        }
+
+        // Advance our iterator
+        it++;
+        ASSERT(it != block_manager->cend());
+        info = it->GetMemoryInfo();
+    }
+
+    // Write output state
+    if (out_state) {
+        *out_state = first_state;
+    }
+    if (out_perm) {
+        *out_perm = first_perm;
+    }
+    if (out_attr) {
+        *out_attr = first_attr & static_cast<MemoryAttribute>(~ignore_attr);
+    }
+
+    return RESULT_SUCCESS;
+}
+
+} // namespace Kernel::Memory
diff --git a/src/core/hle/kernel/memory/page_table.h b/src/core/hle/kernel/memory/page_table.h
new file mode 100644
index 000000000..6c3a3c275
--- /dev/null
+++ b/src/core/hle/kernel/memory/page_table.h
@@ -0,0 +1,274 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <list>
+#include <memory>
+#include <mutex>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/page_table.h"
+#include "core/file_sys/program_metadata.h"
+#include "core/hle/kernel/memory/memory_block.h"
+#include "core/hle/kernel/memory/memory_manager.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel::Memory {
+
+class MemoryBlockManager;
+
+class PageTable final : NonCopyable {
+public:
+    explicit PageTable(Core::System& system);
+
+    ResultCode InitializeForProcess(FileSys::ProgramAddressSpaceType as_type, bool enable_aslr,
+                                    VAddr code_addr, std::size_t code_size,
+                                    Memory::MemoryManager::Pool pool);
+    ResultCode MapProcessCode(VAddr addr, std::size_t pages_count, MemoryState state,
+                              MemoryPermission perm);
+    ResultCode MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size);
+    ResultCode UnmapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size);
+    ResultCode MapPhysicalMemory(VAddr addr, std::size_t size);
+    ResultCode UnmapPhysicalMemory(VAddr addr, std::size_t size);
+    ResultCode UnmapMemory(VAddr addr, std::size_t size);
+    ResultCode Map(VAddr dst_addr, VAddr src_addr, std::size_t size);
+    ResultCode Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size);
+    ResultCode MapPages(VAddr addr, PageLinkedList& page_linked_list, MemoryState state,
+                        MemoryPermission perm);
+    ResultCode SetCodeMemoryPermission(VAddr addr, std::size_t size, MemoryPermission perm);
+    MemoryInfo QueryInfo(VAddr addr);
+    ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, MemoryPermission perm);
+    ResultCode ResetTransferMemory(VAddr addr, std::size_t size);
+    ResultCode SetMemoryAttribute(VAddr addr, std::size_t size, MemoryAttribute mask,
+                                  MemoryAttribute value);
+    ResultCode SetHeapCapacity(std::size_t new_heap_capacity);
+    ResultVal<VAddr> SetHeapSize(std::size_t size);
+    ResultVal<VAddr> AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,
+                                          bool is_map_only, VAddr region_start,
+                                          std::size_t region_num_pages, MemoryState state,
+                                          MemoryPermission perm, PAddr map_addr = 0);
+    PAddr GetPhysicalAddr(VAddr addr);
+
+    Common::PageTable& PageTableImpl() {
+        return page_table_impl;
+    }
+
+    const Common::PageTable& PageTableImpl() const {
+        return page_table_impl;
+    }
+
+private:
+    enum class OperationType : u32 {
+        Map,
+        MapGroup,
+        Unmap,
+        ChangePermissions,
+        ChangePermissionsAndRefresh,
+    };
+
+    static constexpr MemoryAttribute DefaultMemoryIgnoreAttr =
+        MemoryAttribute::DontCareMask | MemoryAttribute::IpcLocked | MemoryAttribute::DeviceShared;
+
+    ResultCode InitializeMemoryLayout(VAddr start, VAddr end);
+    ResultCode MapPages(VAddr addr, const PageLinkedList& page_linked_list, MemoryPermission perm);
+    void MapPhysicalMemory(PageLinkedList& page_linked_list, VAddr start, VAddr end);
+    bool IsRegionMapped(VAddr address, u64 size);
+    bool IsRegionContiguous(VAddr addr, u64 size) const;
+    void AddRegionToPages(VAddr start, std::size_t num_pages, PageLinkedList& page_linked_list);
+    MemoryInfo QueryInfoImpl(VAddr addr);
+    VAddr AllocateVirtualMemory(VAddr start, std::size_t region_num_pages, u64 needed_num_pages,
+                                std::size_t align);
+    ResultCode Operate(VAddr addr, std::size_t num_pages, const PageLinkedList& page_group,
+                       OperationType operation);
+    ResultCode Operate(VAddr addr, std::size_t num_pages, MemoryPermission perm,
+                       OperationType operation, PAddr map_addr = 0);
+    constexpr VAddr GetRegionAddress(MemoryState state) const;
+    constexpr std::size_t GetRegionSize(MemoryState state) const;
+    constexpr bool CanContain(VAddr addr, std::size_t size, MemoryState state) const;
+
+    constexpr ResultCode CheckMemoryState(const MemoryInfo& info, MemoryState state_mask,
+                                          MemoryState state, MemoryPermission perm_mask,
+                                          MemoryPermission perm, MemoryAttribute attr_mask,
+                                          MemoryAttribute attr) const;
+    ResultCode CheckMemoryState(MemoryState* out_state, MemoryPermission* out_perm,
+                                MemoryAttribute* out_attr, VAddr addr, std::size_t size,
+                                MemoryState state_mask, MemoryState state,
+                                MemoryPermission perm_mask, MemoryPermission perm,
+                                MemoryAttribute attr_mask, MemoryAttribute attr,
+                                MemoryAttribute ignore_attr = DefaultMemoryIgnoreAttr);
+    ResultCode CheckMemoryState(VAddr addr, std::size_t size, MemoryState state_mask,
+                                MemoryState state, MemoryPermission perm_mask,
+                                MemoryPermission perm, MemoryAttribute attr_mask,
+                                MemoryAttribute attr,
+                                MemoryAttribute ignore_attr = DefaultMemoryIgnoreAttr) {
+        return CheckMemoryState(nullptr, nullptr, nullptr, addr, size, state_mask, state, perm_mask,
+                                perm, attr_mask, attr, ignore_attr);
+    }
+
+    std::recursive_mutex page_table_lock;
+    std::unique_ptr<MemoryBlockManager> block_manager;
+
+public:
+    constexpr VAddr GetAddressSpaceStart() const {
+        return address_space_start;
+    }
+    constexpr VAddr GetAddressSpaceEnd() const {
+        return address_space_end;
+    }
+    constexpr std::size_t GetAddressSpaceSize() const {
+        return address_space_end - address_space_start;
+    }
+    constexpr VAddr GetHeapRegionStart() const {
+        return heap_region_start;
+    }
+    constexpr VAddr GetHeapRegionEnd() const {
+        return heap_region_end;
+    }
+    constexpr std::size_t GetHeapRegionSize() const {
+        return heap_region_end - heap_region_start;
+    }
+    constexpr VAddr GetAliasRegionStart() const {
+        return alias_region_start;
+    }
+    constexpr VAddr GetAliasRegionEnd() const {
+        return alias_region_end;
+    }
+    constexpr std::size_t GetAliasRegionSize() const {
+        return alias_region_end - alias_region_start;
+    }
+    constexpr VAddr GetStackRegionStart() const {
+        return stack_region_start;
+    }
+    constexpr VAddr GetStackRegionEnd() const {
+        return stack_region_end;
+    }
+    constexpr std::size_t GetStackRegionSize() const {
+        return stack_region_end - stack_region_start;
+    }
+    constexpr VAddr GetKernelMapRegionStart() const {
+        return kernel_map_region_start;
+    }
+    constexpr VAddr GetKernelMapRegionEnd() const {
+        return kernel_map_region_end;
+    }
+    constexpr VAddr GetCodeRegionStart() const {
+        return code_region_start;
+    }
+    constexpr VAddr GetCodeRegionEnd() const {
+        return code_region_end;
+    }
+    constexpr VAddr GetAliasCodeRegionStart() const {
+        return alias_code_region_start;
+    }
+    constexpr VAddr GetAliasCodeRegionSize() const {
+        return alias_code_region_end - alias_code_region_start;
+    }
+    constexpr std::size_t GetAddressSpaceWidth() const {
+        return address_space_width;
+    }
+    constexpr std::size_t GetHeapSize() {
+        return current_heap_addr - heap_region_start;
+    }
+    constexpr std::size_t GetTotalHeapSize() {
+        return GetHeapSize() + physical_memory_usage;
+    }
+    constexpr bool IsInsideAddressSpace(VAddr address, std::size_t size) const {
+        return address_space_start <= address && address + size - 1 <= address_space_end - 1;
+    }
+    constexpr bool IsOutsideAliasRegion(VAddr address, std::size_t size) const {
+        return alias_region_start > address || address + size - 1 > alias_region_end - 1;
+    }
+    constexpr bool IsOutsideStackRegion(VAddr address, std::size_t size) const {
+        return stack_region_start > address || address + size - 1 > stack_region_end - 1;
+    }
+    constexpr bool IsInvalidRegion(VAddr address, std::size_t size) const {
+        return address + size - 1 > GetAliasCodeRegionStart() + GetAliasCodeRegionSize() - 1;
+    }
+    constexpr bool IsInsideHeapRegion(VAddr address, std::size_t size) const {
+        return address + size > heap_region_start && heap_region_end > address;
+    }
+    constexpr bool IsInsideAliasRegion(VAddr address, std::size_t size) const {
+        return address + size > alias_region_start && alias_region_end > address;
+    }
+    constexpr bool IsOutsideASLRRegion(VAddr address, std::size_t size) const {
+        if (IsInvalidRegion(address, size)) {
+            return true;
+        }
+        if (IsInsideHeapRegion(address, size)) {
+            return true;
+        }
+        if (IsInsideAliasRegion(address, size)) {
+            return true;
+        }
+        return {};
+    }
+    constexpr bool IsInsideASLRRegion(VAddr address, std::size_t size) const {
+        return !IsOutsideASLRRegion(address, size);
+    }
+
+private:
+    constexpr bool Contains(VAddr addr) const {
+        return address_space_start <= addr && addr <= address_space_end - 1;
+    }
+    constexpr bool Contains(VAddr addr, std::size_t size) const {
+        return address_space_start <= addr && addr < addr + size &&
+               addr + size - 1 <= address_space_end - 1;
+    }
+    constexpr bool IsKernel() const {
+        return is_kernel;
+    }
+    constexpr bool IsAslrEnabled() const {
+        return is_aslr_enabled;
+    }
+
+    constexpr std::size_t GetNumGuardPages() const {
+        return IsKernel() ? 1 : 4;
+    }
+
+    constexpr bool ContainsPages(VAddr addr, std::size_t num_pages) const {
+        return (address_space_start <= addr) &&
+               (num_pages <= (address_space_end - address_space_start) / PageSize) &&
+               (addr + num_pages * PageSize - 1 <= address_space_end - 1);
+    }
+
+private:
+    VAddr address_space_start{};
+    VAddr address_space_end{};
+    VAddr heap_region_start{};
+    VAddr heap_region_end{};
+    VAddr current_heap_end{};
+    VAddr alias_region_start{};
+    VAddr alias_region_end{};
+    VAddr stack_region_start{};
+    VAddr stack_region_end{};
+    VAddr kernel_map_region_start{};
+    VAddr kernel_map_region_end{};
+    VAddr code_region_start{};
+    VAddr code_region_end{};
+    VAddr alias_code_region_start{};
+    VAddr alias_code_region_end{};
+    VAddr current_heap_addr{};
+
+    std::size_t heap_capacity{};
+    std::size_t physical_memory_usage{};
+    std::size_t max_heap_size{};
+    std::size_t max_physical_memory_size{};
+    std::size_t address_space_width{};
+
+    bool is_kernel{};
+    bool is_aslr_enabled{};
+
+    MemoryManager::Pool memory_pool{MemoryManager::Pool::Application};
+
+    Common::PageTable page_table_impl;
+
+    Core::System& system;
+};
+
+} // namespace Kernel::Memory