diff options
Diffstat (limited to 'src/core/hle/kernel/vm_manager.h')
| -rw-r--r-- | src/core/hle/kernel/vm_manager.h | 178 |
1 files changed, 147 insertions, 31 deletions
diff --git a/src/core/hle/kernel/vm_manager.h b/src/core/hle/kernel/vm_manager.h index d522404fe..10bacac3e 100644 --- a/src/core/hle/kernel/vm_manager.h +++ b/src/core/hle/kernel/vm_manager.h @@ -43,26 +43,129 @@ enum class VMAPermission : u8 { ReadWriteExecute = Read | Write | Execute, }; -/// Set of values returned in MemoryInfo.state by svcQueryMemory. +// clang-format off +/// Represents memory states and any relevant flags, as used by the kernel. +/// svcQueryMemory interprets these by masking away all but the first eight +/// bits when storing memory state into a MemoryInfo instance. enum class MemoryState : u32 { - Unmapped = 0x0, - Io = 0x1, - Normal = 0x2, - CodeStatic = 0x3, - CodeMutable = 0x4, - Heap = 0x5, - Shared = 0x6, - ModuleCodeStatic = 0x8, - ModuleCodeMutable = 0x9, - IpcBuffer0 = 0xA, - Mapped = 0xB, - ThreadLocal = 0xC, - TransferMemoryIsolated = 0xD, - TransferMemory = 0xE, - ProcessMemory = 0xF, - IpcBuffer1 = 0x11, - IpcBuffer3 = 0x12, - KernelStack = 0x13, + Mask = 0xFF, + FlagProtect = 1U << 8, + FlagDebug = 1U << 9, + FlagIPC0 = 1U << 10, + FlagIPC3 = 1U << 11, + FlagIPC1 = 1U << 12, + FlagMapped = 1U << 13, + FlagCode = 1U << 14, + FlagAlias = 1U << 15, + FlagModule = 1U << 16, + FlagTransfer = 1U << 17, + FlagQueryPhysicalAddressAllowed = 1U << 18, + FlagSharedDevice = 1U << 19, + FlagSharedDeviceAligned = 1U << 20, + FlagIPCBuffer = 1U << 21, + FlagMemoryPoolAllocated = 1U << 22, + FlagMapProcess = 1U << 23, + FlagUncached = 1U << 24, + FlagCodeMemory = 1U << 25, + + // Convenience flag sets to reduce repetition + IPCFlags = FlagIPC0 | FlagIPC3 | FlagIPC1, + + CodeFlags = FlagDebug | IPCFlags | FlagMapped | FlagCode | FlagQueryPhysicalAddressAllowed | + FlagSharedDevice | FlagSharedDeviceAligned | FlagMemoryPoolAllocated, + + DataFlags = FlagProtect | IPCFlags | FlagMapped | FlagAlias | FlagTransfer | + FlagQueryPhysicalAddressAllowed | FlagSharedDevice | FlagSharedDeviceAligned | + FlagMemoryPoolAllocated | FlagIPCBuffer | FlagUncached, + + Unmapped = 0x00, + Io = 0x01 | FlagMapped, + Normal = 0x02 | FlagMapped | FlagQueryPhysicalAddressAllowed, + CodeStatic = 0x03 | CodeFlags | FlagMapProcess, + CodeMutable = 0x04 | CodeFlags | FlagMapProcess | FlagCodeMemory, + Heap = 0x05 | DataFlags | FlagCodeMemory, + Shared = 0x06 | FlagMapped | FlagMemoryPoolAllocated, + ModuleCodeStatic = 0x08 | CodeFlags | FlagModule | FlagMapProcess, + ModuleCodeMutable = 0x09 | DataFlags | FlagModule | FlagMapProcess | FlagCodeMemory, + + IpcBuffer0 = 0x0A | FlagMapped | FlagQueryPhysicalAddressAllowed | FlagMemoryPoolAllocated | + IPCFlags | FlagSharedDevice | FlagSharedDeviceAligned, + + Stack = 0x0B | FlagMapped | IPCFlags | FlagQueryPhysicalAddressAllowed | + FlagSharedDevice | FlagSharedDeviceAligned | FlagMemoryPoolAllocated, + + ThreadLocal = 0x0C | FlagMapped | FlagMemoryPoolAllocated, + + TransferMemoryIsolated = 0x0D | IPCFlags | FlagMapped | FlagQueryPhysicalAddressAllowed | + FlagSharedDevice | FlagSharedDeviceAligned | FlagMemoryPoolAllocated | + FlagUncached, + + TransferMemory = 0x0E | FlagIPC3 | FlagIPC1 | FlagMapped | FlagQueryPhysicalAddressAllowed | + FlagSharedDevice | FlagSharedDeviceAligned | FlagMemoryPoolAllocated, + + ProcessMemory = 0x0F | FlagIPC3 | FlagIPC1 | FlagMapped | FlagMemoryPoolAllocated, + + // Used to signify an inaccessible or invalid memory region with memory queries + Inaccessible = 0x10, + + IpcBuffer1 = 0x11 | FlagIPC3 | FlagIPC1 | FlagMapped | FlagQueryPhysicalAddressAllowed | + FlagSharedDevice | FlagSharedDeviceAligned | FlagMemoryPoolAllocated, + + IpcBuffer3 = 0x12 | FlagIPC3 | FlagMapped | FlagQueryPhysicalAddressAllowed | + FlagSharedDeviceAligned | FlagMemoryPoolAllocated, + + KernelStack = 0x13 | FlagMapped, +}; +// clang-format on + +constexpr MemoryState operator|(MemoryState lhs, MemoryState rhs) { + return static_cast<MemoryState>(u32(lhs) | u32(rhs)); +} + +constexpr MemoryState operator&(MemoryState lhs, MemoryState rhs) { + return static_cast<MemoryState>(u32(lhs) & u32(rhs)); +} + +constexpr MemoryState operator^(MemoryState lhs, MemoryState rhs) { + return static_cast<MemoryState>(u32(lhs) ^ u32(rhs)); +} + +constexpr MemoryState operator~(MemoryState lhs) { + return static_cast<MemoryState>(~u32(lhs)); +} + +constexpr MemoryState& operator|=(MemoryState& lhs, MemoryState rhs) { + lhs = lhs | rhs; + return lhs; +} + +constexpr MemoryState& operator&=(MemoryState& lhs, MemoryState rhs) { + lhs = lhs & rhs; + return lhs; +} + +constexpr MemoryState& operator^=(MemoryState& lhs, MemoryState rhs) { + lhs = lhs ^ rhs; + return lhs; +} + +constexpr u32 ToSvcMemoryState(MemoryState state) { + return static_cast<u32>(state & MemoryState::Mask); +} + +struct MemoryInfo { + u64 base_address; + u64 size; + u32 state; + u32 attributes; + u32 permission; + u32 ipc_ref_count; + u32 device_ref_count; +}; +static_assert(sizeof(MemoryInfo) == 0x28, "MemoryInfo has incorrect size."); + +struct PageInfo { + u32 flags; }; /** @@ -113,16 +216,10 @@ struct VirtualMemoryArea { * - http://duartes.org/gustavo/blog/post/page-cache-the-affair-between-memory-and-files/ */ class VMManager final { + using VMAMap = std::map<VAddr, VirtualMemoryArea>; + public: - /** - * A map covering the entirety of the managed address space, keyed by the `base` field of each - * VMA. It must always be modified by splitting or merging VMAs, so that the invariant - * `elem.base + elem.size == next.base` is preserved, and mergeable regions must always be - * merged when possible so that no two similar and adjacent regions exist that have not been - * merged. - */ - std::map<VAddr, VirtualMemoryArea> vma_map; - using VMAHandle = decltype(vma_map)::const_iterator; + using VMAHandle = VMAMap::const_iterator; VMManager(); ~VMManager(); @@ -133,6 +230,9 @@ public: /// Finds the VMA in which the given address is included in, or `vma_map.end()`. VMAHandle FindVMA(VAddr target) const; + /// Indicates whether or not the given handle is within the VMA map. + bool IsValidHandle(VMAHandle handle) const; + // TODO(yuriks): Should these functions actually return the handle? /** @@ -189,8 +289,15 @@ public: ResultVal<VAddr> HeapAllocate(VAddr target, u64 size, VMAPermission perms); ResultCode HeapFree(VAddr target, u64 size); - ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size, - MemoryState state = MemoryState::Mapped); + ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size, MemoryState state); + + /// Queries the memory manager for information about the given address. + /// + /// @param address The address to query the memory manager about for information. + /// + /// @return A MemoryInfo instance containing information about the given address. + /// + MemoryInfo QueryMemory(VAddr address) const; /** * Scans all VMAs and updates the page table range of any that use the given vector as backing @@ -281,7 +388,7 @@ public: Memory::PageTable page_table; private: - using VMAIter = decltype(vma_map)::iterator; + using VMAIter = VMAMap::iterator; /// Converts a VMAHandle to a mutable VMAIter. VMAIter StripIterConstness(const VMAHandle& iter); @@ -328,6 +435,15 @@ private: /// Clears out the page table void ClearPageTable(); + /** + * A map covering the entirety of the managed address space, keyed by the `base` field of each + * VMA. It must always be modified by splitting or merging VMAs, so that the invariant + * `elem.base + elem.size == next.base` is preserved, and mergeable regions must always be + * merged when possible so that no two similar and adjacent regions exist that have not been + * merged. + */ + VMAMap vma_map; + u32 address_space_width = 0; VAddr address_space_base = 0; VAddr address_space_end = 0; |