kernel: memory: Add MemoryBlock class, for managing memory blocks and their state.
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bunnei
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2 changed files with 316 additions and 0 deletions
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@ -156,6 +156,7 @@ add_library(core STATIC
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hle/kernel/kernel.h
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hle/kernel/memory/address_space_info.cpp
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hle/kernel/memory/address_space_info.h
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hle/kernel/memory/memory_block.h
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hle/kernel/memory/memory_types.h
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hle/kernel/memory/slab_heap.h
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hle/kernel/mutex.cpp
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315
src/core/hle/kernel/memory/memory_block.h
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315
src/core/hle/kernel/memory/memory_block.h
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@ -0,0 +1,315 @@
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// Copyright 2020 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "core/hle/kernel/memory/memory_types.h"
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#include "core/hle/kernel/svc_types.h"
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namespace Kernel::Memory {
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enum class MemoryState : u32 {
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None = 0,
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Mask = 0xFFFFFFFF, // TODO(bunnei): This should probable be 0xFF
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All = ~None,
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FlagCanReprotect = (1 << 8),
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FlagCanDebug = (1 << 9),
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FlagCanUseIpc = (1 << 10),
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FlagCanUseNonDeviceIpc = (1 << 11),
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FlagCanUseNonSecureIpc = (1 << 12),
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FlagMapped = (1 << 13),
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FlagCode = (1 << 14),
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FlagCanAlias = (1 << 15),
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FlagCanCodeAlias = (1 << 16),
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FlagCanTransfer = (1 << 17),
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FlagCanQueryPhysical = (1 << 18),
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FlagCanDeviceMap = (1 << 19),
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FlagCanAlignedDeviceMap = (1 << 20),
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FlagCanIpcUserBuffer = (1 << 21),
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FlagReferenceCounted = (1 << 22),
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FlagCanMapProcess = (1 << 23),
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FlagCanChangeAttribute = (1 << 24),
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FlagCanCodeMemory = (1 << 25),
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FlagsData = FlagCanReprotect | FlagCanUseIpc | FlagCanUseNonDeviceIpc | FlagCanUseNonSecureIpc |
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FlagMapped | FlagCanAlias | FlagCanTransfer | FlagCanQueryPhysical |
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FlagCanDeviceMap | FlagCanAlignedDeviceMap | FlagCanIpcUserBuffer |
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FlagReferenceCounted | FlagCanChangeAttribute,
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FlagsCode = FlagCanDebug | FlagCanUseIpc | FlagCanUseNonDeviceIpc | FlagCanUseNonSecureIpc |
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FlagMapped | FlagCode | FlagCanQueryPhysical | FlagCanDeviceMap |
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FlagCanAlignedDeviceMap | FlagReferenceCounted,
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FlagsMisc = FlagMapped | FlagReferenceCounted | FlagCanQueryPhysical | FlagCanDeviceMap,
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Free = static_cast<u32>(Svc::MemoryState::Free),
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Io = static_cast<u32>(Svc::MemoryState::Io) | FlagMapped,
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Static = static_cast<u32>(Svc::MemoryState::Static) | FlagMapped | FlagCanQueryPhysical,
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Code = static_cast<u32>(Svc::MemoryState::Code) | FlagsCode | FlagCanMapProcess,
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CodeData = static_cast<u32>(Svc::MemoryState::CodeData) | FlagsData | FlagCanMapProcess |
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FlagCanCodeMemory,
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Shared = static_cast<u32>(Svc::MemoryState::Shared) | FlagMapped | FlagReferenceCounted,
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Normal = static_cast<u32>(Svc::MemoryState::Normal) | FlagsData | FlagCanCodeMemory,
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AliasCode = static_cast<u32>(Svc::MemoryState::AliasCode) | FlagsCode | FlagCanMapProcess |
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FlagCanCodeAlias,
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AliasCodeData = static_cast<u32>(Svc::MemoryState::AliasCodeData) | FlagsData |
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FlagCanMapProcess | FlagCanCodeAlias | FlagCanCodeMemory,
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Ipc = static_cast<u32>(Svc::MemoryState::Ipc) | FlagsMisc | FlagCanAlignedDeviceMap |
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FlagCanUseIpc | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
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Stack = static_cast<u32>(Svc::MemoryState::Stack) | FlagsMisc | FlagCanAlignedDeviceMap |
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FlagCanUseIpc | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
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ThreadLocal =
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static_cast<u32>(Svc::MemoryState::ThreadLocal) | FlagMapped | FlagReferenceCounted,
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Transfered = static_cast<u32>(Svc::MemoryState::Transfered) | FlagsMisc |
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FlagCanAlignedDeviceMap | FlagCanChangeAttribute | FlagCanUseIpc |
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FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
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SharedTransfered = static_cast<u32>(Svc::MemoryState::SharedTransfered) | FlagsMisc |
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FlagCanAlignedDeviceMap | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
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SharedCode = static_cast<u32>(Svc::MemoryState::SharedCode) | FlagMapped |
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FlagReferenceCounted | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
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Inaccessible = static_cast<u32>(Svc::MemoryState::Inaccessible),
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NonSecureIpc = static_cast<u32>(Svc::MemoryState::NonSecureIpc) | FlagsMisc |
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FlagCanAlignedDeviceMap | FlagCanUseNonSecureIpc | FlagCanUseNonDeviceIpc,
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NonDeviceIpc =
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static_cast<u32>(Svc::MemoryState::NonDeviceIpc) | FlagsMisc | FlagCanUseNonDeviceIpc,
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Kernel = static_cast<u32>(Svc::MemoryState::Kernel) | FlagMapped,
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GeneratedCode = static_cast<u32>(Svc::MemoryState::GeneratedCode) | FlagMapped |
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FlagReferenceCounted | FlagCanDebug,
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CodeOut = static_cast<u32>(Svc::MemoryState::CodeOut) | FlagMapped | FlagReferenceCounted,
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};
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DECLARE_ENUM_FLAG_OPERATORS(MemoryState);
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static_assert(static_cast<u32>(MemoryState::Free) == 0x00000000);
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static_assert(static_cast<u32>(MemoryState::Io) == 0x00002001);
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static_assert(static_cast<u32>(MemoryState::Static) == 0x00042002);
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static_assert(static_cast<u32>(MemoryState::Code) == 0x00DC7E03);
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static_assert(static_cast<u32>(MemoryState::CodeData) == 0x03FEBD04);
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static_assert(static_cast<u32>(MemoryState::Normal) == 0x037EBD05);
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static_assert(static_cast<u32>(MemoryState::Shared) == 0x00402006);
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static_assert(static_cast<u32>(MemoryState::AliasCode) == 0x00DD7E08);
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static_assert(static_cast<u32>(MemoryState::AliasCodeData) == 0x03FFBD09);
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static_assert(static_cast<u32>(MemoryState::Ipc) == 0x005C3C0A);
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static_assert(static_cast<u32>(MemoryState::Stack) == 0x005C3C0B);
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static_assert(static_cast<u32>(MemoryState::ThreadLocal) == 0x0040200C);
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static_assert(static_cast<u32>(MemoryState::Transfered) == 0x015C3C0D);
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static_assert(static_cast<u32>(MemoryState::SharedTransfered) == 0x005C380E);
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static_assert(static_cast<u32>(MemoryState::SharedCode) == 0x0040380F);
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static_assert(static_cast<u32>(MemoryState::Inaccessible) == 0x00000010);
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static_assert(static_cast<u32>(MemoryState::NonSecureIpc) == 0x005C3811);
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static_assert(static_cast<u32>(MemoryState::NonDeviceIpc) == 0x004C2812);
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static_assert(static_cast<u32>(MemoryState::Kernel) == 0x00002013);
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static_assert(static_cast<u32>(MemoryState::GeneratedCode) == 0x00402214);
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static_assert(static_cast<u32>(MemoryState::CodeOut) == 0x00402015);
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enum class MemoryPermission : u8 {
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None = 0,
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Mask = static_cast<u8>(~None),
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Read = 1 << 0,
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Write = 1 << 1,
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Execute = 1 << 2,
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ReadAndWrite = Read | Write,
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ReadAndExecute = Read | Execute,
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UserMask = static_cast<u8>(Svc::MemoryPermission::Read | Svc::MemoryPermission::Write |
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Svc::MemoryPermission::Execute),
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};
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DECLARE_ENUM_FLAG_OPERATORS(MemoryPermission);
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enum class MemoryAttribute : u8 {
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None = 0x00,
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Mask = 0x7F,
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All = Mask,
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DontCareMask = 0x80,
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Locked = static_cast<u8>(Svc::MemoryAttribute::Locked),
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IpcLocked = static_cast<u8>(Svc::MemoryAttribute::IpcLocked),
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DeviceShared = static_cast<u8>(Svc::MemoryAttribute::DeviceShared),
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Uncached = static_cast<u8>(Svc::MemoryAttribute::Uncached),
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IpcAndDeviceMapped = IpcLocked | DeviceShared,
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LockedAndIpcLocked = Locked | IpcLocked,
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DeviceSharedAndUncached = DeviceShared | Uncached
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};
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DECLARE_ENUM_FLAG_OPERATORS(MemoryAttribute);
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static_assert((static_cast<u8>(MemoryAttribute::Mask) &
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static_cast<u8>(MemoryAttribute::DontCareMask)) == 0);
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struct MemoryInfo {
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VAddr addr{};
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std::size_t size{};
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MemoryState state{};
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MemoryPermission perm{};
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MemoryAttribute attribute{};
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MemoryPermission original_perm{};
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u16 ipc_lock_count{};
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u16 device_use_count{};
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constexpr Svc::MemoryInfo GetSvcMemoryInfo() const {
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return {
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addr,
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size,
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static_cast<Svc::MemoryState>(state & MemoryState::Mask),
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static_cast<Svc::MemoryAttribute>(attribute & MemoryAttribute::Mask),
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static_cast<Svc::MemoryPermission>(perm & MemoryPermission::UserMask),
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ipc_lock_count,
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device_use_count,
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};
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}
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constexpr VAddr GetAddress() const {
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return addr;
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}
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constexpr std::size_t GetSize() const {
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return size;
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}
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constexpr std::size_t GetNumPages() const {
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return GetSize() / PageSize;
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}
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constexpr VAddr GetEndAddress() const {
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return GetAddress() + GetSize();
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}
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constexpr VAddr GetLastAddress() const {
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return GetEndAddress() - 1;
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}
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};
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class MemoryBlock final {
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friend class MemoryBlockManager;
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private:
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VAddr addr{};
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std::size_t num_pages{};
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MemoryState state{MemoryState::None};
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u16 ipc_lock_count{};
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u16 device_use_count{};
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MemoryPermission perm{MemoryPermission::None};
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MemoryPermission original_perm{MemoryPermission::None};
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MemoryAttribute attribute{MemoryAttribute::None};
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public:
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static constexpr int Compare(const MemoryBlock& lhs, const MemoryBlock& rhs) {
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if (lhs.GetAddress() < rhs.GetAddress()) {
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return -1;
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} else if (lhs.GetAddress() <= rhs.GetLastAddress()) {
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return 0;
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} else {
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return 1;
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}
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}
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public:
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constexpr MemoryBlock() = default;
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constexpr MemoryBlock(VAddr addr, std::size_t num_pages, MemoryState state,
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MemoryPermission perm, MemoryAttribute attribute)
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: addr{addr}, num_pages(num_pages), state{state}, perm{perm}, attribute{attribute} {}
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constexpr VAddr GetAddress() const {
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return addr;
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}
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constexpr std::size_t GetNumPages() const {
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return num_pages;
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}
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constexpr std::size_t GetSize() const {
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return GetNumPages() * PageSize;
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}
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constexpr VAddr GetEndAddress() const {
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return GetAddress() + GetSize();
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}
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constexpr VAddr GetLastAddress() const {
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return GetEndAddress() - 1;
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}
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constexpr MemoryInfo GetMemoryInfo() const {
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return {
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GetAddress(), GetSize(), state, perm,
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attribute, original_perm, ipc_lock_count, device_use_count,
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};
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}
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private:
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constexpr bool HasProperties(MemoryState s, MemoryPermission p, MemoryAttribute a) const {
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constexpr MemoryAttribute AttributeIgnoreMask{MemoryAttribute::DontCareMask |
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MemoryAttribute::IpcLocked |
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MemoryAttribute::DeviceShared};
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return state == s && perm == p &&
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(attribute | AttributeIgnoreMask) == (a | AttributeIgnoreMask);
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}
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constexpr bool HasSameProperties(const MemoryBlock& rhs) const {
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return state == rhs.state && perm == rhs.perm && original_perm == rhs.original_perm &&
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attribute == rhs.attribute && ipc_lock_count == rhs.ipc_lock_count &&
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device_use_count == rhs.device_use_count;
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}
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constexpr bool Contains(VAddr start) const {
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return GetAddress() <= start && start <= GetEndAddress();
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}
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constexpr void Add(std::size_t count) {
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ASSERT(count > 0);
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ASSERT(GetAddress() + count * PageSize - 1 < GetEndAddress() + count * PageSize - 1);
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num_pages += count;
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}
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constexpr void Update(MemoryState new_state, MemoryPermission new_perm,
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MemoryAttribute new_attribute) {
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ASSERT(original_perm == MemoryPermission::None);
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ASSERT((attribute & MemoryAttribute::IpcLocked) == MemoryAttribute::None);
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state = new_state;
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perm = new_perm;
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// TODO(bunnei): Is this right?
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attribute = static_cast<MemoryAttribute>(
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new_attribute /*| (attribute & (MemoryAttribute::IpcLocked | MemoryAttribute::DeviceShared))*/);
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}
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constexpr MemoryBlock Split(VAddr split_addr) {
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ASSERT(GetAddress() < split_addr);
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ASSERT(Contains(split_addr));
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ASSERT(Common::IsAligned(split_addr, PageSize));
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MemoryBlock block;
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block.addr = addr;
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block.num_pages = (split_addr - GetAddress()) / PageSize;
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block.state = state;
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block.ipc_lock_count = ipc_lock_count;
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block.device_use_count = device_use_count;
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block.perm = perm;
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block.original_perm = original_perm;
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block.attribute = attribute;
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addr = split_addr;
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num_pages -= block.num_pages;
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return block;
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}
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};
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static_assert(std::is_trivially_destructible<MemoryBlock>::value);
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} // namespace Kernel::Memory
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