forked from Mirror/Ryujinx
2800 lines
No EOL
97 KiB
C#
2800 lines
No EOL
97 KiB
C#
using Ryujinx.Common;
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using Ryujinx.HLE.HOS.Kernel.Common;
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using Ryujinx.HLE.HOS.Kernel.Process;
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using Ryujinx.Memory.Range;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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namespace Ryujinx.HLE.HOS.Kernel.Memory
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{
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abstract class KPageTableBase
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{
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private static readonly int[] MappingUnitSizes = new int[]
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{
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0x1000,
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0x10000,
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0x200000,
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0x400000,
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0x2000000,
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0x40000000
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};
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public const int PageSize = 0x1000;
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private const int KMemoryBlockSize = 0x40;
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// We need 2 blocks for the case where a big block
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// needs to be split in 2, plus one block that will be the new one inserted.
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private const int MaxBlocksNeededForInsertion = 2;
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protected readonly KernelContext Context;
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public ulong AddrSpaceStart { get; private set; }
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public ulong AddrSpaceEnd { get; private set; }
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public ulong CodeRegionStart { get; private set; }
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public ulong CodeRegionEnd { get; private set; }
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public ulong HeapRegionStart { get; private set; }
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public ulong HeapRegionEnd { get; private set; }
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private ulong _currentHeapAddr;
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public ulong AliasRegionStart { get; private set; }
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public ulong AliasRegionEnd { get; private set; }
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public ulong StackRegionStart { get; private set; }
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public ulong StackRegionEnd { get; private set; }
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public ulong TlsIoRegionStart { get; private set; }
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public ulong TlsIoRegionEnd { get; private set; }
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private ulong _heapCapacity;
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public ulong PhysicalMemoryUsage { get; private set; }
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private readonly KMemoryBlockManager _blockManager;
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private MemoryRegion _memRegion;
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private bool _aslrDisabled;
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public int AddrSpaceWidth { get; private set; }
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private bool _isKernel;
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private bool _aslrEnabled;
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private KMemoryBlockSlabManager _slabManager;
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private int _contextId;
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private MersenneTwister _randomNumberGenerator;
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public abstract bool SupportsMemoryAliasing { get; }
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public KPageTableBase(KernelContext context)
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{
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Context = context;
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_blockManager = new KMemoryBlockManager();
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_isKernel = false;
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}
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private static readonly int[] AddrSpaceSizes = new int[] { 32, 36, 32, 39 };
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public KernelResult InitializeForProcess(
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AddressSpaceType addrSpaceType,
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bool aslrEnabled,
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bool aslrDisabled,
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MemoryRegion memRegion,
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ulong address,
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ulong size,
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KMemoryBlockSlabManager slabManager)
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{
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if ((uint)addrSpaceType > (uint)AddressSpaceType.Addr39Bits)
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{
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throw new ArgumentException(nameof(addrSpaceType));
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}
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_contextId = Context.ContextIdManager.GetId();
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ulong addrSpaceBase = 0;
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ulong addrSpaceSize = 1UL << AddrSpaceSizes[(int)addrSpaceType];
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KernelResult result = CreateUserAddressSpace(
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addrSpaceType,
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aslrEnabled,
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aslrDisabled,
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addrSpaceBase,
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addrSpaceSize,
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memRegion,
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address,
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size,
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slabManager);
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if (result != KernelResult.Success)
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{
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Context.ContextIdManager.PutId(_contextId);
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}
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return result;
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}
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private class Region
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{
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public ulong Start;
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public ulong End;
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public ulong Size;
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public ulong AslrOffset;
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}
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private KernelResult CreateUserAddressSpace(
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AddressSpaceType addrSpaceType,
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bool aslrEnabled,
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bool aslrDisabled,
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ulong addrSpaceStart,
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ulong addrSpaceEnd,
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MemoryRegion memRegion,
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ulong address,
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ulong size,
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KMemoryBlockSlabManager slabManager)
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{
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ulong endAddr = address + size;
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Region aliasRegion = new Region();
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Region heapRegion = new Region();
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Region stackRegion = new Region();
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Region tlsIoRegion = new Region();
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ulong codeRegionSize;
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ulong stackAndTlsIoStart;
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ulong stackAndTlsIoEnd;
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ulong baseAddress;
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switch (addrSpaceType)
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{
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case AddressSpaceType.Addr32Bits:
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aliasRegion.Size = 0x40000000;
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heapRegion.Size = 0x40000000;
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stackRegion.Size = 0;
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tlsIoRegion.Size = 0;
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CodeRegionStart = 0x200000;
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codeRegionSize = 0x3fe00000;
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stackAndTlsIoStart = 0x200000;
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stackAndTlsIoEnd = 0x40000000;
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baseAddress = 0x200000;
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AddrSpaceWidth = 32;
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break;
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case AddressSpaceType.Addr36Bits:
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aliasRegion.Size = 0x180000000;
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heapRegion.Size = 0x180000000;
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stackRegion.Size = 0;
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tlsIoRegion.Size = 0;
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CodeRegionStart = 0x8000000;
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codeRegionSize = 0x78000000;
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stackAndTlsIoStart = 0x8000000;
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stackAndTlsIoEnd = 0x80000000;
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baseAddress = 0x8000000;
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AddrSpaceWidth = 36;
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break;
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case AddressSpaceType.Addr32BitsNoMap:
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aliasRegion.Size = 0;
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heapRegion.Size = 0x80000000;
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stackRegion.Size = 0;
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tlsIoRegion.Size = 0;
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CodeRegionStart = 0x200000;
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codeRegionSize = 0x3fe00000;
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stackAndTlsIoStart = 0x200000;
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stackAndTlsIoEnd = 0x40000000;
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baseAddress = 0x200000;
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AddrSpaceWidth = 32;
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break;
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case AddressSpaceType.Addr39Bits:
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aliasRegion.Size = 0x1000000000;
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heapRegion.Size = 0x180000000;
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stackRegion.Size = 0x80000000;
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tlsIoRegion.Size = 0x1000000000;
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CodeRegionStart = BitUtils.AlignDown(address, 0x200000);
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codeRegionSize = BitUtils.AlignUp(endAddr, 0x200000) - CodeRegionStart;
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stackAndTlsIoStart = 0;
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stackAndTlsIoEnd = 0;
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baseAddress = 0x8000000;
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AddrSpaceWidth = 39;
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break;
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default: throw new ArgumentException(nameof(addrSpaceType));
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}
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CodeRegionEnd = CodeRegionStart + codeRegionSize;
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ulong mapBaseAddress;
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ulong mapAvailableSize;
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if (CodeRegionStart - baseAddress >= addrSpaceEnd - CodeRegionEnd)
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{
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// Has more space before the start of the code region.
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mapBaseAddress = baseAddress;
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mapAvailableSize = CodeRegionStart - baseAddress;
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}
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else
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{
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// Has more space after the end of the code region.
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mapBaseAddress = CodeRegionEnd;
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mapAvailableSize = addrSpaceEnd - CodeRegionEnd;
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}
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ulong mapTotalSize = aliasRegion.Size + heapRegion.Size + stackRegion.Size + tlsIoRegion.Size;
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ulong aslrMaxOffset = mapAvailableSize - mapTotalSize;
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_aslrEnabled = aslrEnabled;
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AddrSpaceStart = addrSpaceStart;
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AddrSpaceEnd = addrSpaceEnd;
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_slabManager = slabManager;
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if (mapAvailableSize < mapTotalSize)
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{
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return KernelResult.OutOfMemory;
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}
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if (aslrEnabled)
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{
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aliasRegion.AslrOffset = GetRandomValue(0, aslrMaxOffset >> 21) << 21;
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heapRegion.AslrOffset = GetRandomValue(0, aslrMaxOffset >> 21) << 21;
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stackRegion.AslrOffset = GetRandomValue(0, aslrMaxOffset >> 21) << 21;
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tlsIoRegion.AslrOffset = GetRandomValue(0, aslrMaxOffset >> 21) << 21;
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}
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// Regions are sorted based on ASLR offset.
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// When ASLR is disabled, the order is Map, Heap, NewMap and TlsIo.
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aliasRegion.Start = mapBaseAddress + aliasRegion.AslrOffset;
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aliasRegion.End = aliasRegion.Start + aliasRegion.Size;
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heapRegion.Start = mapBaseAddress + heapRegion.AslrOffset;
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heapRegion.End = heapRegion.Start + heapRegion.Size;
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stackRegion.Start = mapBaseAddress + stackRegion.AslrOffset;
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stackRegion.End = stackRegion.Start + stackRegion.Size;
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tlsIoRegion.Start = mapBaseAddress + tlsIoRegion.AslrOffset;
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tlsIoRegion.End = tlsIoRegion.Start + tlsIoRegion.Size;
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SortRegion(heapRegion, aliasRegion);
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if (stackRegion.Size != 0)
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{
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SortRegion(stackRegion, aliasRegion);
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SortRegion(stackRegion, heapRegion);
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}
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else
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{
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stackRegion.Start = stackAndTlsIoStart;
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stackRegion.End = stackAndTlsIoEnd;
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}
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if (tlsIoRegion.Size != 0)
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{
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SortRegion(tlsIoRegion, aliasRegion);
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SortRegion(tlsIoRegion, heapRegion);
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SortRegion(tlsIoRegion, stackRegion);
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}
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else
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{
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tlsIoRegion.Start = stackAndTlsIoStart;
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tlsIoRegion.End = stackAndTlsIoEnd;
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}
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AliasRegionStart = aliasRegion.Start;
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AliasRegionEnd = aliasRegion.End;
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HeapRegionStart = heapRegion.Start;
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HeapRegionEnd = heapRegion.End;
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StackRegionStart = stackRegion.Start;
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StackRegionEnd = stackRegion.End;
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TlsIoRegionStart = tlsIoRegion.Start;
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TlsIoRegionEnd = tlsIoRegion.End;
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_currentHeapAddr = HeapRegionStart;
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_heapCapacity = 0;
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PhysicalMemoryUsage = 0;
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_memRegion = memRegion;
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_aslrDisabled = aslrDisabled;
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return _blockManager.Initialize(addrSpaceStart, addrSpaceEnd, slabManager);
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}
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private ulong GetRandomValue(ulong min, ulong max)
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{
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return (ulong)GetRandomValue((long)min, (long)max);
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}
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private long GetRandomValue(long min, long max)
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{
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if (_randomNumberGenerator == null)
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{
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_randomNumberGenerator = new MersenneTwister(0);
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}
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return _randomNumberGenerator.GenRandomNumber(min, max);
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}
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private static void SortRegion(Region lhs, Region rhs)
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{
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if (lhs.AslrOffset < rhs.AslrOffset)
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{
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rhs.Start += lhs.Size;
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rhs.End += lhs.Size;
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}
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else
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{
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lhs.Start += rhs.Size;
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lhs.End += rhs.Size;
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}
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}
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public KernelResult MapPages(ulong address, KPageList pageList, MemoryState state, KMemoryPermission permission)
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{
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ulong pagesCount = pageList.GetPagesCount();
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ulong size = pagesCount * PageSize;
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if (!CanContain(address, size, state))
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{
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return KernelResult.InvalidMemState;
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}
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lock (_blockManager)
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{
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if (!IsUnmapped(address, pagesCount * PageSize))
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{
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return KernelResult.InvalidMemState;
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}
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if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
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{
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return KernelResult.OutOfResource;
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}
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KernelResult result = MapPages(address, pageList, permission);
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if (result == KernelResult.Success)
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{
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_blockManager.InsertBlock(address, pagesCount, state, permission);
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}
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return result;
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}
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}
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public KernelResult UnmapPages(ulong address, ulong pagesCount, IEnumerable<HostMemoryRange> ranges, MemoryState stateExpected)
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{
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ulong size = pagesCount * PageSize;
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ulong endAddr = address + size;
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ulong addrSpacePagesCount = (AddrSpaceEnd - AddrSpaceStart) / PageSize;
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if (AddrSpaceStart > address)
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{
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return KernelResult.InvalidMemState;
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}
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if (addrSpacePagesCount < pagesCount)
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{
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return KernelResult.InvalidMemState;
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}
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if (endAddr - 1 > AddrSpaceEnd - 1)
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{
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return KernelResult.InvalidMemState;
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}
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lock (_blockManager)
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{
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var currentRanges = GetPhysicalRegions(address, size);
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if (!currentRanges.SequenceEqual(ranges))
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{
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return KernelResult.InvalidMemRange;
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}
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if (CheckRange(
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address,
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size,
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MemoryState.Mask,
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stateExpected,
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KMemoryPermission.None,
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KMemoryPermission.None,
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MemoryAttribute.Mask,
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MemoryAttribute.None,
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MemoryAttribute.IpcAndDeviceMapped,
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out MemoryState state,
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out _,
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out _))
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{
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if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
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{
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return KernelResult.OutOfResource;
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}
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KernelResult result = Unmap(address, pagesCount);
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if (result == KernelResult.Success)
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{
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_blockManager.InsertBlock(address, pagesCount, MemoryState.Unmapped);
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}
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return result;
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}
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else
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{
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return KernelResult.InvalidMemState;
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}
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}
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}
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public KernelResult MapNormalMemory(long address, long size, KMemoryPermission permission)
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{
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// TODO.
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return KernelResult.Success;
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}
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public KernelResult MapIoMemory(long address, long size, KMemoryPermission permission)
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{
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// TODO.
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return KernelResult.Success;
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}
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public KernelResult MapPages(
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ulong pagesCount,
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int alignment,
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ulong srcPa,
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bool paIsValid,
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ulong regionStart,
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ulong regionPagesCount,
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MemoryState state,
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KMemoryPermission permission,
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out ulong address)
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{
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address = 0;
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ulong regionSize = regionPagesCount * PageSize;
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if (!CanContain(regionStart, regionSize, state))
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{
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return KernelResult.InvalidMemState;
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}
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if (regionPagesCount <= pagesCount)
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{
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return KernelResult.OutOfMemory;
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}
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lock (_blockManager)
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{
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address = AllocateVa(regionStart, regionPagesCount, pagesCount, alignment);
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if (address == 0)
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{
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return KernelResult.OutOfMemory;
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}
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if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
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{
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return KernelResult.OutOfResource;
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}
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KernelResult result;
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if (paIsValid)
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{
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result = MapPages(address, pagesCount, srcPa, permission);
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}
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else
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{
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result = AllocateAndMapPages(address, pagesCount, permission);
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}
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if (result != KernelResult.Success)
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{
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return result;
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}
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_blockManager.InsertBlock(address, pagesCount, state, permission);
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}
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return KernelResult.Success;
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}
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public KernelResult MapPages(ulong address, ulong pagesCount, MemoryState state, KMemoryPermission permission)
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{
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ulong size = pagesCount * PageSize;
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if (!CanContain(address, size, state))
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{
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return KernelResult.InvalidMemState;
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}
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lock (_blockManager)
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{
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if (!IsUnmapped(address, size))
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{
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return KernelResult.InvalidMemState;
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}
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if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
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{
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return KernelResult.OutOfResource;
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}
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KernelResult result = AllocateAndMapPages(address, pagesCount, permission);
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if (result == KernelResult.Success)
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{
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_blockManager.InsertBlock(address, pagesCount, state, permission);
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}
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return result;
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}
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}
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private KernelResult AllocateAndMapPages(ulong address, ulong pagesCount, KMemoryPermission permission)
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{
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KMemoryRegionManager region = GetMemoryRegionManager();
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KernelResult result = region.AllocatePages(pagesCount, _aslrDisabled, out KPageList pageList);
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if (result != KernelResult.Success)
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{
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return result;
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}
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using var _ = new OnScopeExit(() => pageList.DecrementPagesReferenceCount(Context.MemoryManager));
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return MapPages(address, pageList, permission);
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}
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public KernelResult MapProcessCodeMemory(ulong dst, ulong src, ulong size)
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{
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lock (_blockManager)
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{
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bool success = CheckRange(
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src,
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size,
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MemoryState.Mask,
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MemoryState.Heap,
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KMemoryPermission.Mask,
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KMemoryPermission.ReadAndWrite,
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MemoryAttribute.Mask,
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MemoryAttribute.None,
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MemoryAttribute.IpcAndDeviceMapped,
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out MemoryState state,
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out KMemoryPermission permission,
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out _);
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success &= IsUnmapped(dst, size);
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if (success)
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{
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if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion * 2))
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{
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return KernelResult.OutOfResource;
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}
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ulong pagesCount = size / PageSize;
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KernelResult result = MapMemory(src, dst, pagesCount, permission, KMemoryPermission.None);
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_blockManager.InsertBlock(src, pagesCount, state, KMemoryPermission.None, MemoryAttribute.Borrowed);
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_blockManager.InsertBlock(dst, pagesCount, MemoryState.ModCodeStatic);
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|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult UnmapProcessCodeMemory(ulong dst, ulong src, ulong size)
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
bool success = CheckRange(
|
|
src,
|
|
size,
|
|
MemoryState.Mask,
|
|
MemoryState.Heap,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.Borrowed,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out _,
|
|
out _,
|
|
out _);
|
|
|
|
success &= CheckRange(
|
|
dst,
|
|
PageSize,
|
|
MemoryState.UnmapProcessCodeMemoryAllowed,
|
|
MemoryState.UnmapProcessCodeMemoryAllowed,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out MemoryState state,
|
|
out _,
|
|
out _);
|
|
|
|
success &= CheckRange(
|
|
dst,
|
|
size,
|
|
MemoryState.Mask,
|
|
state,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None);
|
|
|
|
if (success)
|
|
{
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
KernelResult result = Unmap(dst, pagesCount);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
// TODO: Missing some checks here.
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion * 2))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
_blockManager.InsertBlock(dst, pagesCount, MemoryState.Unmapped);
|
|
_blockManager.InsertBlock(src, pagesCount, MemoryState.Heap, KMemoryPermission.ReadAndWrite);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult SetHeapSize(ulong size, out ulong address)
|
|
{
|
|
address = 0;
|
|
|
|
if (size > HeapRegionEnd - HeapRegionStart)
|
|
{
|
|
return KernelResult.OutOfMemory;
|
|
}
|
|
|
|
KProcess currentProcess = KernelStatic.GetCurrentProcess();
|
|
|
|
lock (_blockManager)
|
|
{
|
|
ulong currentHeapSize = GetHeapSize();
|
|
|
|
if (currentHeapSize <= size)
|
|
{
|
|
// Expand.
|
|
ulong sizeDelta = size - currentHeapSize;
|
|
|
|
if (currentProcess.ResourceLimit != null && sizeDelta != 0 &&
|
|
!currentProcess.ResourceLimit.Reserve(LimitableResource.Memory, sizeDelta))
|
|
{
|
|
return KernelResult.ResLimitExceeded;
|
|
}
|
|
|
|
ulong pagesCount = sizeDelta / PageSize;
|
|
|
|
KMemoryRegionManager region = GetMemoryRegionManager();
|
|
|
|
KernelResult result = region.AllocatePages(pagesCount, _aslrDisabled, out KPageList pageList);
|
|
|
|
using var _ = new OnScopeExit(() => pageList.DecrementPagesReferenceCount(Context.MemoryManager));
|
|
|
|
void CleanUpForError()
|
|
{
|
|
if (currentProcess.ResourceLimit != null && sizeDelta != 0)
|
|
{
|
|
currentProcess.ResourceLimit.Release(LimitableResource.Memory, sizeDelta);
|
|
}
|
|
}
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return result;
|
|
}
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
CleanUpForError();
|
|
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
if (!IsUnmapped(_currentHeapAddr, sizeDelta))
|
|
{
|
|
CleanUpForError();
|
|
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
result = MapPages(_currentHeapAddr, pageList, KMemoryPermission.ReadAndWrite);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return result;
|
|
}
|
|
|
|
_blockManager.InsertBlock(_currentHeapAddr, pagesCount, MemoryState.Heap, KMemoryPermission.ReadAndWrite);
|
|
}
|
|
else
|
|
{
|
|
// Shrink.
|
|
ulong freeAddr = HeapRegionStart + size;
|
|
ulong sizeDelta = currentHeapSize - size;
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
if (!CheckRange(
|
|
freeAddr,
|
|
sizeDelta,
|
|
MemoryState.Mask,
|
|
MemoryState.Heap,
|
|
KMemoryPermission.Mask,
|
|
KMemoryPermission.ReadAndWrite,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out _,
|
|
out _,
|
|
out _))
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
ulong pagesCount = sizeDelta / PageSize;
|
|
|
|
KernelResult result = Unmap(freeAddr, pagesCount);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
currentProcess.ResourceLimit?.Release(LimitableResource.Memory, sizeDelta);
|
|
|
|
_blockManager.InsertBlock(freeAddr, pagesCount, MemoryState.Unmapped);
|
|
}
|
|
|
|
_currentHeapAddr = HeapRegionStart + size;
|
|
}
|
|
|
|
address = HeapRegionStart;
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
public ulong GetTotalHeapSize()
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
return GetHeapSize() + PhysicalMemoryUsage;
|
|
}
|
|
}
|
|
|
|
private ulong GetHeapSize()
|
|
{
|
|
return _currentHeapAddr - HeapRegionStart;
|
|
}
|
|
|
|
public KernelResult SetHeapCapacity(ulong capacity)
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
_heapCapacity = capacity;
|
|
}
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
public KernelResult SetMemoryAttribute(
|
|
ulong address,
|
|
ulong size,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeValue)
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
if (CheckRange(
|
|
address,
|
|
size,
|
|
MemoryState.AttributeChangeAllowed,
|
|
MemoryState.AttributeChangeAllowed,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.BorrowedAndIpcMapped,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.DeviceMappedAndUncached,
|
|
out MemoryState state,
|
|
out KMemoryPermission permission,
|
|
out MemoryAttribute attribute))
|
|
{
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
attribute &= ~attributeMask;
|
|
attribute |= attributeMask & attributeValue;
|
|
|
|
_blockManager.InsertBlock(address, pagesCount, state, permission, attribute);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KMemoryInfo QueryMemory(ulong address)
|
|
{
|
|
if (address >= AddrSpaceStart &&
|
|
address < AddrSpaceEnd)
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
return _blockManager.FindBlock(address).GetInfo();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return new KMemoryInfo(
|
|
AddrSpaceEnd,
|
|
~AddrSpaceEnd + 1,
|
|
MemoryState.Reserved,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.None,
|
|
KMemoryPermission.None,
|
|
0,
|
|
0);
|
|
}
|
|
}
|
|
|
|
public KernelResult Map(ulong dst, ulong src, ulong size)
|
|
{
|
|
bool success;
|
|
|
|
lock (_blockManager)
|
|
{
|
|
success = CheckRange(
|
|
src,
|
|
size,
|
|
MemoryState.MapAllowed,
|
|
MemoryState.MapAllowed,
|
|
KMemoryPermission.Mask,
|
|
KMemoryPermission.ReadAndWrite,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out MemoryState srcState,
|
|
out _,
|
|
out _);
|
|
|
|
success &= IsUnmapped(dst, size);
|
|
|
|
if (success)
|
|
{
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion * 2))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
KernelResult result = MapMemory(src, dst, pagesCount, KMemoryPermission.ReadAndWrite, KMemoryPermission.ReadAndWrite);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
_blockManager.InsertBlock(src, pagesCount, srcState, KMemoryPermission.None, MemoryAttribute.Borrowed);
|
|
_blockManager.InsertBlock(dst, pagesCount, MemoryState.Stack, KMemoryPermission.ReadAndWrite);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult UnmapForKernel(ulong address, ulong pagesCount, MemoryState stateExpected)
|
|
{
|
|
ulong size = pagesCount * PageSize;
|
|
|
|
lock (_blockManager)
|
|
{
|
|
if (CheckRange(
|
|
address,
|
|
size,
|
|
MemoryState.Mask,
|
|
stateExpected,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out _,
|
|
out _,
|
|
out _))
|
|
{
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
KernelResult result = Unmap(address, pagesCount);
|
|
|
|
if (result == KernelResult.Success)
|
|
{
|
|
_blockManager.InsertBlock(address, pagesCount, MemoryState.Unmapped);
|
|
}
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult Unmap(ulong dst, ulong src, ulong size)
|
|
{
|
|
bool success;
|
|
|
|
lock (_blockManager)
|
|
{
|
|
success = CheckRange(
|
|
src,
|
|
size,
|
|
MemoryState.MapAllowed,
|
|
MemoryState.MapAllowed,
|
|
KMemoryPermission.Mask,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.Borrowed,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out MemoryState srcState,
|
|
out _,
|
|
out _);
|
|
|
|
success &= CheckRange(
|
|
dst,
|
|
size,
|
|
MemoryState.Mask,
|
|
MemoryState.Stack,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out _,
|
|
out KMemoryPermission dstPermission,
|
|
out _);
|
|
|
|
if (success)
|
|
{
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion * 2))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
KernelResult result = UnmapMemory(dst, src, pagesCount, dstPermission, KMemoryPermission.ReadAndWrite);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
_blockManager.InsertBlock(src, pagesCount, srcState, KMemoryPermission.ReadAndWrite);
|
|
_blockManager.InsertBlock(dst, pagesCount, MemoryState.Unmapped);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult SetProcessMemoryPermission(ulong address, ulong size, KMemoryPermission permission)
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
if (CheckRange(
|
|
address,
|
|
size,
|
|
MemoryState.ProcessPermissionChangeAllowed,
|
|
MemoryState.ProcessPermissionChangeAllowed,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out MemoryState oldState,
|
|
out KMemoryPermission oldPermission,
|
|
out _))
|
|
{
|
|
MemoryState newState = oldState;
|
|
|
|
// If writing into the code region is allowed, then we need
|
|
// to change it to mutable.
|
|
if ((permission & KMemoryPermission.Write) != 0)
|
|
{
|
|
if (oldState == MemoryState.CodeStatic)
|
|
{
|
|
newState = MemoryState.CodeMutable;
|
|
}
|
|
else if (oldState == MemoryState.ModCodeStatic)
|
|
{
|
|
newState = MemoryState.ModCodeMutable;
|
|
}
|
|
else
|
|
{
|
|
throw new InvalidOperationException($"Memory state \"{oldState}\" not valid for this operation.");
|
|
}
|
|
}
|
|
|
|
if (newState != oldState || permission != oldPermission)
|
|
{
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
KernelResult result;
|
|
|
|
if ((oldPermission & KMemoryPermission.Execute) != 0)
|
|
{
|
|
result = ReprotectWithAttributes(address, pagesCount, permission);
|
|
}
|
|
else
|
|
{
|
|
result = Reprotect(address, pagesCount, permission);
|
|
}
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
_blockManager.InsertBlock(address, pagesCount, newState, permission);
|
|
}
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult MapPhysicalMemory(ulong address, ulong size)
|
|
{
|
|
ulong endAddr = address + size;
|
|
|
|
lock (_blockManager)
|
|
{
|
|
ulong mappedSize = 0;
|
|
|
|
foreach (KMemoryInfo info in IterateOverRange(address, endAddr))
|
|
{
|
|
if (info.State != MemoryState.Unmapped)
|
|
{
|
|
mappedSize += GetSizeInRange(info, address, endAddr);
|
|
}
|
|
}
|
|
|
|
if (mappedSize == size)
|
|
{
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
ulong remainingSize = size - mappedSize;
|
|
|
|
ulong remainingPages = remainingSize / PageSize;
|
|
|
|
KProcess currentProcess = KernelStatic.GetCurrentProcess();
|
|
|
|
if (currentProcess.ResourceLimit != null &&
|
|
!currentProcess.ResourceLimit.Reserve(LimitableResource.Memory, remainingSize))
|
|
{
|
|
return KernelResult.ResLimitExceeded;
|
|
}
|
|
|
|
KMemoryRegionManager region = GetMemoryRegionManager();
|
|
|
|
KernelResult result = region.AllocatePages(remainingPages, _aslrDisabled, out KPageList pageList);
|
|
|
|
using var _ = new OnScopeExit(() => pageList.DecrementPagesReferenceCount(Context.MemoryManager));
|
|
|
|
void CleanUpForError()
|
|
{
|
|
currentProcess.ResourceLimit?.Release(LimitableResource.Memory, remainingSize);
|
|
}
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return result;
|
|
}
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
CleanUpForError();
|
|
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
LinkedListNode<KPageNode> pageListNode = pageList.Nodes.First;
|
|
|
|
KPageNode pageNode = pageListNode.Value;
|
|
|
|
ulong srcPa = pageNode.Address;
|
|
ulong srcPaPages = pageNode.PagesCount;
|
|
|
|
foreach (KMemoryInfo info in IterateOverRange(address, endAddr))
|
|
{
|
|
if (info.State != MemoryState.Unmapped)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
ulong blockSize = GetSizeInRange(info, address, endAddr);
|
|
|
|
ulong dstVaPages = blockSize / PageSize;
|
|
|
|
ulong dstVa = GetAddrInRange(info, address);
|
|
|
|
while (dstVaPages > 0)
|
|
{
|
|
if (srcPaPages == 0)
|
|
{
|
|
pageListNode = pageListNode.Next;
|
|
|
|
pageNode = pageListNode.Value;
|
|
|
|
srcPa = pageNode.Address;
|
|
srcPaPages = pageNode.PagesCount;
|
|
}
|
|
|
|
ulong currentPagesCount = Math.Min(srcPaPages, dstVaPages);
|
|
|
|
MapPages(dstVa, currentPagesCount, srcPa, KMemoryPermission.ReadAndWrite);
|
|
|
|
dstVa += currentPagesCount * PageSize;
|
|
srcPa += currentPagesCount * PageSize;
|
|
srcPaPages -= currentPagesCount;
|
|
dstVaPages -= currentPagesCount;
|
|
}
|
|
}
|
|
|
|
PhysicalMemoryUsage += remainingSize;
|
|
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
_blockManager.InsertBlock(
|
|
address,
|
|
pagesCount,
|
|
MemoryState.Unmapped,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.None,
|
|
MemoryState.Heap,
|
|
KMemoryPermission.ReadAndWrite,
|
|
MemoryAttribute.None);
|
|
}
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
public KernelResult UnmapPhysicalMemory(ulong address, ulong size)
|
|
{
|
|
ulong endAddr = address + size;
|
|
|
|
lock (_blockManager)
|
|
{
|
|
// Scan, ensure that the region can be unmapped (all blocks are heap or
|
|
// already unmapped), fill pages list for freeing memory.
|
|
ulong heapMappedSize = 0;
|
|
|
|
foreach (KMemoryInfo info in IterateOverRange(address, endAddr))
|
|
{
|
|
if (info.State == MemoryState.Heap)
|
|
{
|
|
if (info.Attribute != MemoryAttribute.None)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
ulong blockSize = GetSizeInRange(info, address, endAddr);
|
|
|
|
heapMappedSize += blockSize;
|
|
}
|
|
else if (info.State != MemoryState.Unmapped)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
|
|
if (heapMappedSize == 0)
|
|
{
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
// Try to unmap all the heap mapped memory inside range.
|
|
KernelResult result = KernelResult.Success;
|
|
|
|
foreach (KMemoryInfo info in IterateOverRange(address, endAddr))
|
|
{
|
|
if (info.State == MemoryState.Heap)
|
|
{
|
|
ulong blockSize = GetSizeInRange(info, address, endAddr);
|
|
ulong blockAddress = GetAddrInRange(info, address);
|
|
|
|
ulong blockPagesCount = blockSize / PageSize;
|
|
|
|
result = Unmap(blockAddress, blockPagesCount);
|
|
|
|
// The kernel would attempt to remap if this fails, but we don't because:
|
|
// - The implementation may not support remapping if memory aliasing is not supported on the platform.
|
|
// - Unmap can't ever fail here anyway.
|
|
Debug.Assert(result == KernelResult.Success);
|
|
}
|
|
}
|
|
|
|
if (result == KernelResult.Success)
|
|
{
|
|
PhysicalMemoryUsage -= heapMappedSize;
|
|
|
|
KProcess currentProcess = KernelStatic.GetCurrentProcess();
|
|
|
|
currentProcess.ResourceLimit?.Release(LimitableResource.Memory, heapMappedSize);
|
|
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
_blockManager.InsertBlock(address, pagesCount, MemoryState.Unmapped);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
public KernelResult CopyDataToCurrentProcess(
|
|
ulong dst,
|
|
ulong size,
|
|
ulong src,
|
|
MemoryState stateMask,
|
|
MemoryState stateExpected,
|
|
KMemoryPermission permission,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeExpected)
|
|
{
|
|
// Client -> server.
|
|
return CopyDataFromOrToCurrentProcess(
|
|
size,
|
|
src,
|
|
dst,
|
|
stateMask,
|
|
stateExpected,
|
|
permission,
|
|
attributeMask,
|
|
attributeExpected,
|
|
toServer: true);
|
|
}
|
|
|
|
public KernelResult CopyDataFromCurrentProcess(
|
|
ulong dst,
|
|
ulong size,
|
|
MemoryState stateMask,
|
|
MemoryState stateExpected,
|
|
KMemoryPermission permission,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeExpected,
|
|
ulong src)
|
|
{
|
|
// Server -> client.
|
|
return CopyDataFromOrToCurrentProcess(
|
|
size,
|
|
dst,
|
|
src,
|
|
stateMask,
|
|
stateExpected,
|
|
permission,
|
|
attributeMask,
|
|
attributeExpected,
|
|
toServer: false);
|
|
}
|
|
|
|
private KernelResult CopyDataFromOrToCurrentProcess(
|
|
ulong size,
|
|
ulong clientAddress,
|
|
ulong serverAddress,
|
|
MemoryState stateMask,
|
|
MemoryState stateExpected,
|
|
KMemoryPermission permission,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeExpected,
|
|
bool toServer)
|
|
{
|
|
if (AddrSpaceStart > clientAddress)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
ulong srcEndAddr = clientAddress + size;
|
|
|
|
if (srcEndAddr <= clientAddress || srcEndAddr - 1 > AddrSpaceEnd - 1)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
lock (_blockManager)
|
|
{
|
|
if (CheckRange(
|
|
clientAddress,
|
|
size,
|
|
stateMask,
|
|
stateExpected,
|
|
permission,
|
|
permission,
|
|
attributeMask | MemoryAttribute.Uncached,
|
|
attributeExpected))
|
|
{
|
|
KProcess currentProcess = KernelStatic.GetCurrentProcess();
|
|
|
|
while (size > 0)
|
|
{
|
|
ulong copySize = 0x100000; // Copy chunck size. Any value will do, moderate sizes are recommended.
|
|
|
|
if (copySize > size)
|
|
{
|
|
copySize = size;
|
|
}
|
|
|
|
if (toServer)
|
|
{
|
|
currentProcess.CpuMemory.Write(serverAddress, GetSpan(clientAddress, (int)copySize));
|
|
}
|
|
else
|
|
{
|
|
Write(clientAddress, currentProcess.CpuMemory.GetSpan(serverAddress, (int)copySize));
|
|
}
|
|
|
|
serverAddress += copySize;
|
|
clientAddress += copySize;
|
|
size -= copySize;
|
|
}
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult MapBufferFromClientProcess(
|
|
ulong size,
|
|
ulong src,
|
|
KPageTableBase srcPageTable,
|
|
KMemoryPermission permission,
|
|
MemoryState state,
|
|
bool send,
|
|
out ulong dst)
|
|
{
|
|
dst = 0;
|
|
|
|
lock (srcPageTable._blockManager)
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
KernelResult result = srcPageTable.ReprotectClientProcess(
|
|
src,
|
|
size,
|
|
permission,
|
|
state,
|
|
out int blocksNeeded);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
if (!srcPageTable._slabManager.CanAllocate(blocksNeeded))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong srcMapAddress = BitUtils.AlignUp(src, PageSize);
|
|
ulong srcMapEndAddr = BitUtils.AlignDown(src + size, PageSize);
|
|
ulong srcMapSize = srcMapEndAddr - srcMapAddress;
|
|
|
|
result = MapPagesFromClientProcess(size, src, permission, state, srcPageTable, send, out ulong va);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
if (srcMapEndAddr > srcMapAddress)
|
|
{
|
|
srcPageTable.UnmapIpcRestorePermission(src, size, state);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
if (srcMapAddress < srcMapEndAddr)
|
|
{
|
|
KMemoryPermission permissionMask = permission == KMemoryPermission.ReadAndWrite
|
|
? KMemoryPermission.None
|
|
: KMemoryPermission.Read;
|
|
|
|
srcPageTable._blockManager.InsertBlock(srcMapAddress, srcMapSize / PageSize, SetIpcMappingPermissions, permissionMask);
|
|
}
|
|
|
|
dst = va;
|
|
}
|
|
}
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
private KernelResult ReprotectClientProcess(
|
|
ulong address,
|
|
ulong size,
|
|
KMemoryPermission permission,
|
|
MemoryState state,
|
|
out int blocksNeeded)
|
|
{
|
|
blocksNeeded = 0;
|
|
|
|
if (AddrSpaceStart > address)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
ulong endAddr = address + size;
|
|
|
|
if (endAddr <= address || endAddr - 1 > AddrSpaceEnd - 1)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
MemoryState stateMask;
|
|
|
|
switch (state)
|
|
{
|
|
case MemoryState.IpcBuffer0: stateMask = MemoryState.IpcSendAllowedType0; break;
|
|
case MemoryState.IpcBuffer1: stateMask = MemoryState.IpcSendAllowedType1; break;
|
|
case MemoryState.IpcBuffer3: stateMask = MemoryState.IpcSendAllowedType3; break;
|
|
|
|
default: return KernelResult.InvalidCombination;
|
|
}
|
|
|
|
KMemoryPermission permissionMask = permission == KMemoryPermission.ReadAndWrite
|
|
? KMemoryPermission.None
|
|
: KMemoryPermission.Read;
|
|
|
|
MemoryAttribute attributeMask = MemoryAttribute.Borrowed | MemoryAttribute.Uncached;
|
|
|
|
if (state == MemoryState.IpcBuffer0)
|
|
{
|
|
attributeMask |= MemoryAttribute.DeviceMapped;
|
|
}
|
|
|
|
ulong addressRounded = BitUtils.AlignUp(address, PageSize);
|
|
ulong addressTruncated = BitUtils.AlignDown(address, PageSize);
|
|
ulong endAddrRounded = BitUtils.AlignUp(endAddr, PageSize);
|
|
ulong endAddrTruncated = BitUtils.AlignDown(endAddr, PageSize);
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong visitedSize = 0;
|
|
|
|
void CleanUpForError()
|
|
{
|
|
if (visitedSize == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
ulong endAddrVisited = address + visitedSize;
|
|
|
|
foreach (KMemoryInfo info in IterateOverRange(addressRounded, endAddrVisited))
|
|
{
|
|
if ((info.Permission & KMemoryPermission.ReadAndWrite) != permissionMask && info.IpcRefCount == 0)
|
|
{
|
|
ulong blockAddress = GetAddrInRange(info, addressRounded);
|
|
ulong blockSize = GetSizeInRange(info, addressRounded, endAddrVisited);
|
|
|
|
ulong blockPagesCount = blockSize / PageSize;
|
|
|
|
KernelResult reprotectResult = Reprotect(blockAddress, blockPagesCount, info.Permission);
|
|
Debug.Assert(reprotectResult == KernelResult.Success);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Signal a read for any resources tracking reads in the region, as the other process is likely to use their data.
|
|
SignalMemoryTracking(addressTruncated, endAddrRounded - addressTruncated, false);
|
|
|
|
// Reprotect the aligned pages range on the client to make them inaccessible from the client process.
|
|
KernelResult result;
|
|
|
|
if (addressRounded < endAddrTruncated)
|
|
{
|
|
foreach (KMemoryInfo info in IterateOverRange(addressRounded, endAddrTruncated))
|
|
{
|
|
// Check if the block state matches what we expect.
|
|
if ((info.State & stateMask) != stateMask ||
|
|
(info.Permission & permission) != permission ||
|
|
(info.Attribute & attributeMask) != MemoryAttribute.None)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
ulong blockAddress = GetAddrInRange(info, addressRounded);
|
|
ulong blockSize = GetSizeInRange(info, addressRounded, endAddrTruncated);
|
|
|
|
ulong blockPagesCount = blockSize / PageSize;
|
|
|
|
// If the first block starts before the aligned range, it will need to be split.
|
|
if (info.Address < addressRounded)
|
|
{
|
|
blocksNeeded++;
|
|
}
|
|
|
|
// If the last block ends after the aligned range, it will need to be split.
|
|
if (endAddrTruncated - 1 < info.Address + info.Size - 1)
|
|
{
|
|
blocksNeeded++;
|
|
}
|
|
|
|
if ((info.Permission & KMemoryPermission.ReadAndWrite) != permissionMask && info.IpcRefCount == 0)
|
|
{
|
|
result = Reprotect(blockAddress, blockPagesCount, permissionMask);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
visitedSize += blockSize;
|
|
}
|
|
}
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
private KernelResult MapPagesFromClientProcess(
|
|
ulong size,
|
|
ulong address,
|
|
KMemoryPermission permission,
|
|
MemoryState state,
|
|
KPageTableBase srcPageTable,
|
|
bool send,
|
|
out ulong dst)
|
|
{
|
|
if (!SupportsMemoryAliasing)
|
|
{
|
|
throw new NotSupportedException("Memory aliasing not supported, can't map IPC buffers.");
|
|
}
|
|
|
|
dst = 0;
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong endAddr = address + size;
|
|
|
|
ulong addressTruncated = BitUtils.AlignDown(address, PageSize);
|
|
ulong addressRounded = BitUtils.AlignUp(address, PageSize);
|
|
ulong endAddrTruncated = BitUtils.AlignDown(endAddr, PageSize);
|
|
ulong endAddrRounded = BitUtils.AlignUp(endAddr, PageSize);
|
|
|
|
ulong neededSize = endAddrRounded - addressTruncated;
|
|
|
|
ulong neededPagesCount = neededSize / PageSize;
|
|
|
|
ulong regionPagesCount = (AliasRegionEnd - AliasRegionStart) / PageSize;
|
|
|
|
ulong va = 0;
|
|
|
|
for (int unit = MappingUnitSizes.Length - 1; unit >= 0 && va == 0; unit--)
|
|
{
|
|
int alignment = MappingUnitSizes[unit];
|
|
|
|
va = AllocateVa(AliasRegionStart, regionPagesCount, neededPagesCount, alignment);
|
|
}
|
|
|
|
if (va == 0)
|
|
{
|
|
return KernelResult.OutOfVaSpace;
|
|
}
|
|
|
|
ulong dstFirstPagePa = 0;
|
|
ulong dstLastPagePa = 0;
|
|
ulong currentVa = va;
|
|
|
|
using var _ = new OnScopeExit(() =>
|
|
{
|
|
if (dstFirstPagePa != 0)
|
|
{
|
|
Context.MemoryManager.DecrementPagesReferenceCount(dstFirstPagePa, 1);
|
|
}
|
|
|
|
if (dstLastPagePa != 0)
|
|
{
|
|
Context.MemoryManager.DecrementPagesReferenceCount(dstLastPagePa, 1);
|
|
}
|
|
});
|
|
|
|
void CleanUpForError()
|
|
{
|
|
if (currentVa != va)
|
|
{
|
|
Unmap(va, (currentVa - va) / PageSize);
|
|
}
|
|
}
|
|
|
|
// Is the first page address aligned?
|
|
// If not, allocate a new page and copy the unaligned chunck.
|
|
if (addressTruncated < addressRounded)
|
|
{
|
|
dstFirstPagePa = GetMemoryRegionManager().AllocatePagesContiguous(Context, 1, _aslrDisabled);
|
|
|
|
if (dstFirstPagePa == 0)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return KernelResult.OutOfMemory;
|
|
}
|
|
}
|
|
|
|
// Is the last page end address aligned?
|
|
// If not, allocate a new page and copy the unaligned chunck.
|
|
if (endAddrTruncated < endAddrRounded && (addressTruncated == addressRounded || addressTruncated < endAddrTruncated))
|
|
{
|
|
dstLastPagePa = GetMemoryRegionManager().AllocatePagesContiguous(Context, 1, _aslrDisabled);
|
|
|
|
if (dstLastPagePa == 0)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return KernelResult.OutOfMemory;
|
|
}
|
|
}
|
|
|
|
if (dstFirstPagePa != 0)
|
|
{
|
|
ulong firstPageFillAddress = dstFirstPagePa;
|
|
ulong unusedSizeAfter;
|
|
|
|
if (send)
|
|
{
|
|
ulong unusedSizeBefore = address - addressTruncated;
|
|
|
|
Context.Memory.ZeroFill(GetDramAddressFromPa(dstFirstPagePa), unusedSizeBefore);
|
|
|
|
ulong copySize = addressRounded <= endAddr ? addressRounded - address : size;
|
|
var data = srcPageTable.GetSpan(addressTruncated + unusedSizeBefore, (int)copySize);
|
|
|
|
Context.Memory.Write(GetDramAddressFromPa(dstFirstPagePa + unusedSizeBefore), data);
|
|
|
|
firstPageFillAddress += unusedSizeBefore + copySize;
|
|
|
|
unusedSizeAfter = addressRounded > endAddr ? addressRounded - endAddr : 0;
|
|
}
|
|
else
|
|
{
|
|
unusedSizeAfter = PageSize;
|
|
}
|
|
|
|
if (unusedSizeAfter != 0)
|
|
{
|
|
Context.Memory.ZeroFill(GetDramAddressFromPa(firstPageFillAddress), unusedSizeAfter);
|
|
}
|
|
|
|
KernelResult result = MapPages(currentVa, 1, dstFirstPagePa, permission);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return result;
|
|
}
|
|
|
|
currentVa += PageSize;
|
|
}
|
|
|
|
if (endAddrTruncated > addressRounded)
|
|
{
|
|
ulong alignedSize = endAddrTruncated - addressRounded;
|
|
|
|
KernelResult result = MapPages(currentVa, srcPageTable.GetPhysicalRegions(addressRounded, alignedSize), permission);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return result;
|
|
}
|
|
|
|
currentVa += alignedSize;
|
|
}
|
|
|
|
if (dstLastPagePa != 0)
|
|
{
|
|
ulong lastPageFillAddr = dstLastPagePa;
|
|
ulong unusedSizeAfter;
|
|
|
|
if (send)
|
|
{
|
|
ulong copySize = endAddr - endAddrTruncated;
|
|
var data = srcPageTable.GetSpan(endAddrTruncated, (int)copySize);
|
|
|
|
Context.Memory.Write(GetDramAddressFromPa(dstLastPagePa), data);
|
|
|
|
lastPageFillAddr += copySize;
|
|
|
|
unusedSizeAfter = PageSize - copySize;
|
|
}
|
|
else
|
|
{
|
|
unusedSizeAfter = PageSize;
|
|
}
|
|
|
|
Context.Memory.ZeroFill(GetDramAddressFromPa(lastPageFillAddr), unusedSizeAfter);
|
|
|
|
KernelResult result = MapPages(currentVa, 1, dstLastPagePa, permission);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
CleanUpForError();
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
_blockManager.InsertBlock(va, neededPagesCount, state, permission);
|
|
|
|
dst = va + (address - addressTruncated);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
public KernelResult UnmapNoAttributeIfStateEquals(ulong address, ulong size, MemoryState state)
|
|
{
|
|
if (AddrSpaceStart > address)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
ulong endAddr = address + size;
|
|
|
|
if (endAddr <= address || endAddr - 1 > AddrSpaceEnd - 1)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
lock (_blockManager)
|
|
{
|
|
if (CheckRange(
|
|
address,
|
|
size,
|
|
MemoryState.Mask,
|
|
state,
|
|
KMemoryPermission.Read,
|
|
KMemoryPermission.Read,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out _,
|
|
out _,
|
|
out _))
|
|
{
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
ulong addressTruncated = BitUtils.AlignDown(address, PageSize);
|
|
ulong addressRounded = BitUtils.AlignUp(address, PageSize);
|
|
ulong endAddrTruncated = BitUtils.AlignDown(endAddr, PageSize);
|
|
ulong endAddrRounded = BitUtils.AlignUp(endAddr, PageSize);
|
|
|
|
ulong pagesCount = (endAddrRounded - addressTruncated) / PageSize;
|
|
|
|
KernelResult result = Unmap(addressTruncated, pagesCount);
|
|
|
|
if (result == KernelResult.Success)
|
|
{
|
|
_blockManager.InsertBlock(addressTruncated, pagesCount, MemoryState.Unmapped);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult UnmapIpcRestorePermission(ulong address, ulong size, MemoryState state)
|
|
{
|
|
ulong endAddr = address + size;
|
|
|
|
ulong addressRounded = BitUtils.AlignUp(address, PageSize);
|
|
ulong addressTruncated = BitUtils.AlignDown(address, PageSize);
|
|
ulong endAddrRounded = BitUtils.AlignUp(endAddr, PageSize);
|
|
ulong endAddrTruncated = BitUtils.AlignDown(endAddr, PageSize);
|
|
|
|
ulong pagesCount = addressRounded < endAddrTruncated ? (endAddrTruncated - addressRounded) / PageSize : 0;
|
|
|
|
if (pagesCount == 0)
|
|
{
|
|
return KernelResult.Success;
|
|
}
|
|
|
|
MemoryState stateMask;
|
|
|
|
switch (state)
|
|
{
|
|
case MemoryState.IpcBuffer0: stateMask = MemoryState.IpcSendAllowedType0; break;
|
|
case MemoryState.IpcBuffer1: stateMask = MemoryState.IpcSendAllowedType1; break;
|
|
case MemoryState.IpcBuffer3: stateMask = MemoryState.IpcSendAllowedType3; break;
|
|
|
|
default: return KernelResult.InvalidCombination;
|
|
}
|
|
|
|
MemoryAttribute attributeMask =
|
|
MemoryAttribute.Borrowed |
|
|
MemoryAttribute.IpcMapped |
|
|
MemoryAttribute.Uncached;
|
|
|
|
if (state == MemoryState.IpcBuffer0)
|
|
{
|
|
attributeMask |= MemoryAttribute.DeviceMapped;
|
|
}
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
// Anything on the client side should see this memory as modified.
|
|
SignalMemoryTracking(addressTruncated, endAddrRounded - addressTruncated, true);
|
|
|
|
lock (_blockManager)
|
|
{
|
|
foreach (KMemoryInfo info in IterateOverRange(addressRounded, endAddrTruncated))
|
|
{
|
|
// Check if the block state matches what we expect.
|
|
if ((info.State & stateMask) != stateMask ||
|
|
(info.Attribute & attributeMask) != MemoryAttribute.IpcMapped)
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
if (info.Permission != info.SourcePermission && info.IpcRefCount == 1)
|
|
{
|
|
ulong blockAddress = GetAddrInRange(info, addressRounded);
|
|
ulong blockSize = GetSizeInRange(info, addressRounded, endAddrTruncated);
|
|
|
|
ulong blockPagesCount = blockSize / PageSize;
|
|
|
|
KernelResult result = Reprotect(blockAddress, blockPagesCount, info.SourcePermission);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
|
|
_blockManager.InsertBlock(addressRounded, pagesCount, RestoreIpcMappingPermissions);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
}
|
|
|
|
private static void SetIpcMappingPermissions(KMemoryBlock block, KMemoryPermission permission)
|
|
{
|
|
block.SetIpcMappingPermission(permission);
|
|
}
|
|
|
|
private static void RestoreIpcMappingPermissions(KMemoryBlock block, KMemoryPermission permission)
|
|
{
|
|
block.RestoreIpcMappingPermission();
|
|
}
|
|
|
|
public KernelResult BorrowIpcBuffer(ulong address, ulong size)
|
|
{
|
|
return SetAttributesAndChangePermission(
|
|
address,
|
|
size,
|
|
MemoryState.IpcBufferAllowed,
|
|
MemoryState.IpcBufferAllowed,
|
|
KMemoryPermission.Mask,
|
|
KMemoryPermission.ReadAndWrite,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Borrowed);
|
|
}
|
|
|
|
public KernelResult BorrowTransferMemory(List<HostMemoryRange> ranges, ulong address, ulong size, KMemoryPermission permission)
|
|
{
|
|
return SetAttributesAndChangePermission(
|
|
address,
|
|
size,
|
|
MemoryState.TransferMemoryAllowed,
|
|
MemoryState.TransferMemoryAllowed,
|
|
KMemoryPermission.Mask,
|
|
KMemoryPermission.ReadAndWrite,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
permission,
|
|
MemoryAttribute.Borrowed,
|
|
ranges);
|
|
}
|
|
|
|
private KernelResult SetAttributesAndChangePermission(
|
|
ulong address,
|
|
ulong size,
|
|
MemoryState stateMask,
|
|
MemoryState stateExpected,
|
|
KMemoryPermission permissionMask,
|
|
KMemoryPermission permissionExpected,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeExpected,
|
|
KMemoryPermission newPermission,
|
|
MemoryAttribute attributeSetMask,
|
|
List<HostMemoryRange> ranges = null)
|
|
{
|
|
if (address + size <= address || !InsideAddrSpace(address, size))
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
lock (_blockManager)
|
|
{
|
|
if (CheckRange(
|
|
address,
|
|
size,
|
|
stateMask | MemoryState.IsPoolAllocated,
|
|
stateExpected | MemoryState.IsPoolAllocated,
|
|
permissionMask,
|
|
permissionExpected,
|
|
attributeMask,
|
|
attributeExpected,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out MemoryState oldState,
|
|
out KMemoryPermission oldPermission,
|
|
out MemoryAttribute oldAttribute))
|
|
{
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
ranges?.AddRange(GetPhysicalRegions(address, size));
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
if (newPermission == KMemoryPermission.None)
|
|
{
|
|
newPermission = oldPermission;
|
|
}
|
|
|
|
if (newPermission != oldPermission)
|
|
{
|
|
KernelResult result = Reprotect(address, pagesCount, newPermission);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
}
|
|
|
|
MemoryAttribute newAttribute = oldAttribute | attributeSetMask;
|
|
|
|
_blockManager.InsertBlock(address, pagesCount, oldState, newPermission, newAttribute);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
public KernelResult UnborrowIpcBuffer(ulong address, ulong size)
|
|
{
|
|
return ClearAttributesAndChangePermission(
|
|
address,
|
|
size,
|
|
MemoryState.IpcBufferAllowed,
|
|
MemoryState.IpcBufferAllowed,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.Borrowed,
|
|
KMemoryPermission.ReadAndWrite,
|
|
MemoryAttribute.Borrowed);
|
|
}
|
|
|
|
public KernelResult UnborrowTransferMemory(ulong address, ulong size, List<HostMemoryRange> ranges)
|
|
{
|
|
return ClearAttributesAndChangePermission(
|
|
address,
|
|
size,
|
|
MemoryState.TransferMemoryAllowed,
|
|
MemoryState.TransferMemoryAllowed,
|
|
KMemoryPermission.None,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.Borrowed,
|
|
KMemoryPermission.ReadAndWrite,
|
|
MemoryAttribute.Borrowed,
|
|
ranges);
|
|
}
|
|
|
|
private KernelResult ClearAttributesAndChangePermission(
|
|
ulong address,
|
|
ulong size,
|
|
MemoryState stateMask,
|
|
MemoryState stateExpected,
|
|
KMemoryPermission permissionMask,
|
|
KMemoryPermission permissionExpected,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeExpected,
|
|
KMemoryPermission newPermission,
|
|
MemoryAttribute attributeClearMask,
|
|
List<HostMemoryRange> ranges = null)
|
|
{
|
|
if (address + size <= address || !InsideAddrSpace(address, size))
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
|
|
lock (_blockManager)
|
|
{
|
|
if (CheckRange(
|
|
address,
|
|
size,
|
|
stateMask | MemoryState.IsPoolAllocated,
|
|
stateExpected | MemoryState.IsPoolAllocated,
|
|
permissionMask,
|
|
permissionExpected,
|
|
attributeMask,
|
|
attributeExpected,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out MemoryState oldState,
|
|
out KMemoryPermission oldPermission,
|
|
out MemoryAttribute oldAttribute))
|
|
{
|
|
ulong pagesCount = size / PageSize;
|
|
|
|
if (ranges != null)
|
|
{
|
|
var currentRanges = GetPhysicalRegions(address, size);
|
|
|
|
if (!currentRanges.SequenceEqual(ranges))
|
|
{
|
|
return KernelResult.InvalidMemRange;
|
|
}
|
|
}
|
|
|
|
if (!_slabManager.CanAllocate(MaxBlocksNeededForInsertion))
|
|
{
|
|
return KernelResult.OutOfResource;
|
|
}
|
|
|
|
if (newPermission == KMemoryPermission.None)
|
|
{
|
|
newPermission = oldPermission;
|
|
}
|
|
|
|
if (newPermission != oldPermission)
|
|
{
|
|
KernelResult result = Reprotect(address, pagesCount, newPermission);
|
|
|
|
if (result != KernelResult.Success)
|
|
{
|
|
return result;
|
|
}
|
|
}
|
|
|
|
MemoryAttribute newAttribute = oldAttribute & ~attributeClearMask;
|
|
|
|
_blockManager.InsertBlock(address, pagesCount, oldState, newPermission, newAttribute);
|
|
|
|
return KernelResult.Success;
|
|
}
|
|
else
|
|
{
|
|
return KernelResult.InvalidMemState;
|
|
}
|
|
}
|
|
}
|
|
|
|
private static ulong GetAddrInRange(KMemoryInfo info, ulong start)
|
|
{
|
|
if (info.Address < start)
|
|
{
|
|
return start;
|
|
}
|
|
|
|
return info.Address;
|
|
}
|
|
|
|
private static ulong GetSizeInRange(KMemoryInfo info, ulong start, ulong end)
|
|
{
|
|
ulong endAddr = info.Size + info.Address;
|
|
ulong size = info.Size;
|
|
|
|
if (info.Address < start)
|
|
{
|
|
size -= start - info.Address;
|
|
}
|
|
|
|
if (endAddr > end)
|
|
{
|
|
size -= endAddr - end;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
private bool IsUnmapped(ulong address, ulong size)
|
|
{
|
|
return CheckRange(
|
|
address,
|
|
size,
|
|
MemoryState.Mask,
|
|
MemoryState.Unmapped,
|
|
KMemoryPermission.Mask,
|
|
KMemoryPermission.None,
|
|
MemoryAttribute.Mask,
|
|
MemoryAttribute.None,
|
|
MemoryAttribute.IpcAndDeviceMapped,
|
|
out _,
|
|
out _,
|
|
out _);
|
|
}
|
|
|
|
private bool CheckRange(
|
|
ulong address,
|
|
ulong size,
|
|
MemoryState stateMask,
|
|
MemoryState stateExpected,
|
|
KMemoryPermission permissionMask,
|
|
KMemoryPermission permissionExpected,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeExpected,
|
|
MemoryAttribute attributeIgnoreMask,
|
|
out MemoryState outState,
|
|
out KMemoryPermission outPermission,
|
|
out MemoryAttribute outAttribute)
|
|
{
|
|
ulong endAddr = address + size;
|
|
|
|
LinkedListNode<KMemoryBlock> node = _blockManager.FindBlockNode(address);
|
|
|
|
KMemoryInfo info = node.Value.GetInfo();
|
|
|
|
MemoryState firstState = info.State;
|
|
KMemoryPermission firstPermission = info.Permission;
|
|
MemoryAttribute firstAttribute = info.Attribute;
|
|
|
|
do
|
|
{
|
|
info = node.Value.GetInfo();
|
|
|
|
// Check if the block state matches what we expect.
|
|
if (firstState != info.State ||
|
|
firstPermission != info.Permission ||
|
|
(info.Attribute & attributeMask) != attributeExpected ||
|
|
(firstAttribute | attributeIgnoreMask) != (info.Attribute | attributeIgnoreMask) ||
|
|
(firstState & stateMask) != stateExpected ||
|
|
(firstPermission & permissionMask) != permissionExpected)
|
|
{
|
|
outState = MemoryState.Unmapped;
|
|
outPermission = KMemoryPermission.None;
|
|
outAttribute = MemoryAttribute.None;
|
|
|
|
return false;
|
|
}
|
|
}
|
|
while (info.Address + info.Size - 1 < endAddr - 1 && (node = node.Next) != null);
|
|
|
|
outState = firstState;
|
|
outPermission = firstPermission;
|
|
outAttribute = firstAttribute & ~attributeIgnoreMask;
|
|
|
|
return true;
|
|
}
|
|
|
|
private bool CheckRange(
|
|
ulong address,
|
|
ulong size,
|
|
MemoryState stateMask,
|
|
MemoryState stateExpected,
|
|
KMemoryPermission permissionMask,
|
|
KMemoryPermission permissionExpected,
|
|
MemoryAttribute attributeMask,
|
|
MemoryAttribute attributeExpected)
|
|
{
|
|
foreach (KMemoryInfo info in IterateOverRange(address, address + size))
|
|
{
|
|
// Check if the block state matches what we expect.
|
|
if ((info.State & stateMask) != stateExpected ||
|
|
(info.Permission & permissionMask) != permissionExpected ||
|
|
(info.Attribute & attributeMask) != attributeExpected)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private IEnumerable<KMemoryInfo> IterateOverRange(ulong start, ulong end)
|
|
{
|
|
LinkedListNode<KMemoryBlock> node = _blockManager.FindBlockNode(start);
|
|
|
|
KMemoryInfo info;
|
|
|
|
do
|
|
{
|
|
info = node.Value.GetInfo();
|
|
|
|
yield return info;
|
|
}
|
|
while (info.Address + info.Size - 1 < end - 1 && (node = node.Next) != null);
|
|
}
|
|
|
|
private ulong AllocateVa(ulong regionStart, ulong regionPagesCount, ulong neededPagesCount, int alignment)
|
|
{
|
|
ulong address = 0;
|
|
|
|
ulong regionEndAddr = regionStart + regionPagesCount * PageSize;
|
|
|
|
ulong reservedPagesCount = _isKernel ? 1UL : 4UL;
|
|
|
|
if (_aslrEnabled)
|
|
{
|
|
ulong totalNeededSize = (reservedPagesCount + neededPagesCount) * PageSize;
|
|
|
|
ulong remainingPages = regionPagesCount - neededPagesCount;
|
|
|
|
ulong aslrMaxOffset = ((remainingPages + reservedPagesCount) * PageSize) / (ulong)alignment;
|
|
|
|
for (int attempt = 0; attempt < 8; attempt++)
|
|
{
|
|
address = BitUtils.AlignDown(regionStart + GetRandomValue(0, aslrMaxOffset) * (ulong)alignment, alignment);
|
|
|
|
ulong endAddr = address + totalNeededSize;
|
|
|
|
KMemoryInfo info = _blockManager.FindBlock(address).GetInfo();
|
|
|
|
if (info.State != MemoryState.Unmapped)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
ulong currBaseAddr = info.Address + reservedPagesCount * PageSize;
|
|
ulong currEndAddr = info.Address + info.Size;
|
|
|
|
if (address >= regionStart &&
|
|
address >= currBaseAddr &&
|
|
endAddr - 1 <= regionEndAddr - 1 &&
|
|
endAddr - 1 <= currEndAddr - 1)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (address == 0)
|
|
{
|
|
ulong aslrPage = GetRandomValue(0, aslrMaxOffset);
|
|
|
|
address = FindFirstFit(
|
|
regionStart + aslrPage * PageSize,
|
|
regionPagesCount - aslrPage,
|
|
neededPagesCount,
|
|
alignment,
|
|
0,
|
|
reservedPagesCount);
|
|
}
|
|
}
|
|
|
|
if (address == 0)
|
|
{
|
|
address = FindFirstFit(
|
|
regionStart,
|
|
regionPagesCount,
|
|
neededPagesCount,
|
|
alignment,
|
|
0,
|
|
reservedPagesCount);
|
|
}
|
|
|
|
return address;
|
|
}
|
|
|
|
private ulong FindFirstFit(
|
|
ulong regionStart,
|
|
ulong regionPagesCount,
|
|
ulong neededPagesCount,
|
|
int alignment,
|
|
ulong reservedStart,
|
|
ulong reservedPagesCount)
|
|
{
|
|
ulong reservedSize = reservedPagesCount * PageSize;
|
|
|
|
ulong totalNeededSize = reservedSize + neededPagesCount * PageSize;
|
|
|
|
ulong regionEndAddr = regionStart + regionPagesCount * PageSize;
|
|
|
|
LinkedListNode<KMemoryBlock> node = _blockManager.FindBlockNode(regionStart);
|
|
|
|
KMemoryInfo info = node.Value.GetInfo();
|
|
|
|
while (regionEndAddr >= info.Address)
|
|
{
|
|
if (info.State == MemoryState.Unmapped)
|
|
{
|
|
ulong currBaseAddr = info.Address <= regionStart ? regionStart : info.Address;
|
|
ulong currEndAddr = info.Address + info.Size - 1;
|
|
|
|
currBaseAddr += reservedSize;
|
|
|
|
ulong address = BitUtils.AlignDown(currBaseAddr, alignment) + reservedStart;
|
|
|
|
if (currBaseAddr > address)
|
|
{
|
|
address += (ulong)alignment;
|
|
}
|
|
|
|
ulong allocationEndAddr = address + totalNeededSize - 1;
|
|
|
|
if (info.Address <= address &&
|
|
address < allocationEndAddr &&
|
|
allocationEndAddr <= regionEndAddr &&
|
|
allocationEndAddr <= currEndAddr)
|
|
{
|
|
return address;
|
|
}
|
|
}
|
|
|
|
node = node.Next;
|
|
|
|
if (node == null)
|
|
{
|
|
break;
|
|
}
|
|
|
|
info = node.Value.GetInfo();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
public bool CanContain(ulong address, ulong size, MemoryState state)
|
|
{
|
|
ulong endAddr = address + size;
|
|
|
|
ulong regionBaseAddr = GetBaseAddress(state);
|
|
ulong regionEndAddr = regionBaseAddr + GetSize(state);
|
|
|
|
bool InsideRegion()
|
|
{
|
|
return regionBaseAddr <= address &&
|
|
endAddr > address &&
|
|
endAddr - 1 <= regionEndAddr - 1;
|
|
}
|
|
|
|
bool OutsideHeapRegion()
|
|
{
|
|
return endAddr <= HeapRegionStart || address >= HeapRegionEnd;
|
|
}
|
|
|
|
bool OutsideAliasRegion()
|
|
{
|
|
return endAddr <= AliasRegionStart || address >= AliasRegionEnd;
|
|
}
|
|
|
|
switch (state)
|
|
{
|
|
case MemoryState.Io:
|
|
case MemoryState.Normal:
|
|
case MemoryState.CodeStatic:
|
|
case MemoryState.CodeMutable:
|
|
case MemoryState.SharedMemory:
|
|
case MemoryState.ModCodeStatic:
|
|
case MemoryState.ModCodeMutable:
|
|
case MemoryState.Stack:
|
|
case MemoryState.ThreadLocal:
|
|
case MemoryState.TransferMemoryIsolated:
|
|
case MemoryState.TransferMemory:
|
|
case MemoryState.ProcessMemory:
|
|
case MemoryState.CodeReadOnly:
|
|
case MemoryState.CodeWritable:
|
|
return InsideRegion() && OutsideHeapRegion() && OutsideAliasRegion();
|
|
|
|
case MemoryState.Heap:
|
|
return InsideRegion() && OutsideAliasRegion();
|
|
|
|
case MemoryState.IpcBuffer0:
|
|
case MemoryState.IpcBuffer1:
|
|
case MemoryState.IpcBuffer3:
|
|
return InsideRegion() && OutsideHeapRegion();
|
|
|
|
case MemoryState.KernelStack:
|
|
return InsideRegion();
|
|
}
|
|
|
|
throw new ArgumentException($"Invalid state value \"{state}\".");
|
|
}
|
|
|
|
private ulong GetBaseAddress(MemoryState state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case MemoryState.Io:
|
|
case MemoryState.Normal:
|
|
case MemoryState.ThreadLocal:
|
|
return TlsIoRegionStart;
|
|
|
|
case MemoryState.CodeStatic:
|
|
case MemoryState.CodeMutable:
|
|
case MemoryState.SharedMemory:
|
|
case MemoryState.ModCodeStatic:
|
|
case MemoryState.ModCodeMutable:
|
|
case MemoryState.TransferMemoryIsolated:
|
|
case MemoryState.TransferMemory:
|
|
case MemoryState.ProcessMemory:
|
|
case MemoryState.CodeReadOnly:
|
|
case MemoryState.CodeWritable:
|
|
return GetAddrSpaceBaseAddr();
|
|
|
|
case MemoryState.Heap:
|
|
return HeapRegionStart;
|
|
|
|
case MemoryState.IpcBuffer0:
|
|
case MemoryState.IpcBuffer1:
|
|
case MemoryState.IpcBuffer3:
|
|
return AliasRegionStart;
|
|
|
|
case MemoryState.Stack:
|
|
return StackRegionStart;
|
|
|
|
case MemoryState.KernelStack:
|
|
return AddrSpaceStart;
|
|
}
|
|
|
|
throw new ArgumentException($"Invalid state value \"{state}\".");
|
|
}
|
|
|
|
private ulong GetSize(MemoryState state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case MemoryState.Io:
|
|
case MemoryState.Normal:
|
|
case MemoryState.ThreadLocal:
|
|
return TlsIoRegionEnd - TlsIoRegionStart;
|
|
|
|
case MemoryState.CodeStatic:
|
|
case MemoryState.CodeMutable:
|
|
case MemoryState.SharedMemory:
|
|
case MemoryState.ModCodeStatic:
|
|
case MemoryState.ModCodeMutable:
|
|
case MemoryState.TransferMemoryIsolated:
|
|
case MemoryState.TransferMemory:
|
|
case MemoryState.ProcessMemory:
|
|
case MemoryState.CodeReadOnly:
|
|
case MemoryState.CodeWritable:
|
|
return GetAddrSpaceSize();
|
|
|
|
case MemoryState.Heap:
|
|
return HeapRegionEnd - HeapRegionStart;
|
|
|
|
case MemoryState.IpcBuffer0:
|
|
case MemoryState.IpcBuffer1:
|
|
case MemoryState.IpcBuffer3:
|
|
return AliasRegionEnd - AliasRegionStart;
|
|
|
|
case MemoryState.Stack:
|
|
return StackRegionEnd - StackRegionStart;
|
|
|
|
case MemoryState.KernelStack:
|
|
return AddrSpaceEnd - AddrSpaceStart;
|
|
}
|
|
|
|
throw new ArgumentException($"Invalid state value \"{state}\".");
|
|
}
|
|
|
|
public ulong GetAddrSpaceBaseAddr()
|
|
{
|
|
if (AddrSpaceWidth == 36 || AddrSpaceWidth == 39)
|
|
{
|
|
return 0x8000000;
|
|
}
|
|
else if (AddrSpaceWidth == 32)
|
|
{
|
|
return 0x200000;
|
|
}
|
|
else
|
|
{
|
|
throw new InvalidOperationException("Invalid address space width!");
|
|
}
|
|
}
|
|
|
|
public ulong GetAddrSpaceSize()
|
|
{
|
|
if (AddrSpaceWidth == 36)
|
|
{
|
|
return 0xff8000000;
|
|
}
|
|
else if (AddrSpaceWidth == 39)
|
|
{
|
|
return 0x7ff8000000;
|
|
}
|
|
else if (AddrSpaceWidth == 32)
|
|
{
|
|
return 0xffe00000;
|
|
}
|
|
else
|
|
{
|
|
throw new InvalidOperationException("Invalid address space width!");
|
|
}
|
|
}
|
|
|
|
private static ulong GetDramAddressFromPa(ulong pa)
|
|
{
|
|
return pa - DramMemoryMap.DramBase;
|
|
}
|
|
|
|
protected KMemoryRegionManager GetMemoryRegionManager()
|
|
{
|
|
return Context.MemoryManager.MemoryRegions[(int)_memRegion];
|
|
}
|
|
|
|
public long GetMmUsedPages()
|
|
{
|
|
lock (_blockManager)
|
|
{
|
|
return BitUtils.DivRoundUp(GetMmUsedSize(), PageSize);
|
|
}
|
|
}
|
|
|
|
private long GetMmUsedSize()
|
|
{
|
|
return _blockManager.BlocksCount * KMemoryBlockSize;
|
|
}
|
|
|
|
public bool IsInvalidRegion(ulong address, ulong size)
|
|
{
|
|
return address + size - 1 > GetAddrSpaceBaseAddr() + GetAddrSpaceSize() - 1;
|
|
}
|
|
|
|
public bool InsideAddrSpace(ulong address, ulong size)
|
|
{
|
|
return AddrSpaceStart <= address && address + size - 1 <= AddrSpaceEnd - 1;
|
|
}
|
|
|
|
public bool InsideAliasRegion(ulong address, ulong size)
|
|
{
|
|
return address + size > AliasRegionStart && AliasRegionEnd > address;
|
|
}
|
|
|
|
public bool InsideHeapRegion(ulong address, ulong size)
|
|
{
|
|
return address + size > HeapRegionStart && HeapRegionEnd > address;
|
|
}
|
|
|
|
public bool InsideStackRegion(ulong address, ulong size)
|
|
{
|
|
return address + size > StackRegionStart && StackRegionEnd > address;
|
|
}
|
|
|
|
public bool OutsideAliasRegion(ulong address, ulong size)
|
|
{
|
|
return AliasRegionStart > address || address + size - 1 > AliasRegionEnd - 1;
|
|
}
|
|
|
|
public bool OutsideAddrSpace(ulong address, ulong size)
|
|
{
|
|
return AddrSpaceStart > address || address + size - 1 > AddrSpaceEnd - 1;
|
|
}
|
|
|
|
public bool OutsideStackRegion(ulong address, ulong size)
|
|
{
|
|
return StackRegionStart > address || address + size - 1 > StackRegionEnd - 1;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the physical regions that make up the given virtual address region.
|
|
/// If any part of the virtual region is unmapped, null is returned.
|
|
/// </summary>
|
|
/// <param name="va">Virtual address of the range</param>
|
|
/// <param name="size">Size of the range</param>
|
|
/// <returns>Array of physical regions</returns>
|
|
protected abstract IEnumerable<HostMemoryRange> GetPhysicalRegions(ulong va, ulong size);
|
|
|
|
/// <summary>
|
|
/// Gets a read-only span of data from CPU mapped memory.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// This may perform a allocation if the data is not contiguous in memory.
|
|
/// For this reason, the span is read-only, you can't modify the data.
|
|
/// </remarks>
|
|
/// <param name="va">Virtual address of the data</param>
|
|
/// <param name="size">Size of the data</param>
|
|
/// <param name="tracked">True if read tracking is triggered on the span</param>
|
|
/// <returns>A read-only span of the data</returns>
|
|
/// <exception cref="Ryujinx.Memory.InvalidMemoryRegionException">Throw for unhandled invalid or unmapped memory accesses</exception>
|
|
protected abstract ReadOnlySpan<byte> GetSpan(ulong va, int size);
|
|
|
|
/// <summary>
|
|
/// Maps a new memory region with the contents of a existing memory region.
|
|
/// </summary>
|
|
/// <param name="src">Source memory region where the data will be taken from</param>
|
|
/// <param name="dst">Destination memory region to map</param>
|
|
/// <param name="pagesCount">Number of pages to map</param>
|
|
/// <param name="oldSrcPermission">Current protection of the source memory region</param>
|
|
/// <param name="newDstPermission">Desired protection for the destination memory region</param>
|
|
/// <returns>Result of the mapping operation</returns>
|
|
protected abstract KernelResult MapMemory(ulong src, ulong dst, ulong pagesCount, KMemoryPermission oldSrcPermission, KMemoryPermission newDstPermission);
|
|
|
|
/// <summary>
|
|
/// Unmaps a region of memory that was previously mapped with <see cref="MapMemory"/>.
|
|
/// </summary>
|
|
/// <param name="dst">Destination memory region to be unmapped</param>
|
|
/// <param name="src">Source memory region that was originally remapped</param>
|
|
/// <param name="pagesCount">Number of pages to unmap</param>
|
|
/// <param name="oldDstPermission">Current protection of the destination memory region</param>
|
|
/// <param name="newSrcPermission">Desired protection of the source memory region</param>
|
|
/// <returns>Result of the unmapping operation</returns>
|
|
protected abstract KernelResult UnmapMemory(ulong dst, ulong src, ulong pagesCount, KMemoryPermission oldDstPermission, KMemoryPermission newSrcPermission);
|
|
|
|
/// <summary>
|
|
/// Maps a region of memory into the specified physical memory region.
|
|
/// </summary>
|
|
/// <param name="dstVa">Destination virtual address that should be mapped</param>
|
|
/// <param name="pagesCount">Number of pages to map</param>
|
|
/// <param name="srcPa">Physical address where the pages should be mapped. May be ignored if aliasing is not supported</param>
|
|
/// <param name="permission">Permission of the region to be mapped</param>
|
|
/// <returns>Result of the mapping operation</returns>
|
|
protected abstract KernelResult MapPages(ulong dstVa, ulong pagesCount, ulong srcPa, KMemoryPermission permission);
|
|
|
|
/// <summary>
|
|
/// Maps a region of memory into the specified physical memory region.
|
|
/// </summary>
|
|
/// <param name="address">Destination virtual address that should be mapped</param>
|
|
/// <param name="pageList">List of physical memory pages where the pages should be mapped. May be ignored if aliasing is not supported</param>
|
|
/// <param name="permission">Permission of the region to be mapped</param>
|
|
/// <returns>Result of the mapping operation</returns>
|
|
protected abstract KernelResult MapPages(ulong address, KPageList pageList, KMemoryPermission permission);
|
|
|
|
/// <summary>
|
|
/// Maps a region of memory into the specified host memory ranges.
|
|
/// </summary>
|
|
/// <param name="address">Destination virtual address that should be mapped</param>
|
|
/// <param name="ranges">Ranges of host memory that should be mapped</param>
|
|
/// <param name="permission">Permission of the region to be mapped</param>
|
|
/// <returns>Result of the mapping operation</returns>
|
|
/// <exception cref="NotSupportedException">The implementation does not support memory aliasing</exception>
|
|
protected abstract KernelResult MapPages(ulong address, IEnumerable<HostMemoryRange> ranges, KMemoryPermission permission);
|
|
|
|
/// <summary>
|
|
/// Unmaps a region of memory that was previously mapped with one of the page mapping methods.
|
|
/// </summary>
|
|
/// <param name="address">Virtual address of the region to unmap</param>
|
|
/// <param name="pagesCount">Number of pages to unmap</param>
|
|
/// <returns>Result of the unmapping operation</returns>
|
|
protected abstract KernelResult Unmap(ulong address, ulong pagesCount);
|
|
|
|
/// <summary>
|
|
/// Changes the permissions of a given virtual memory region.
|
|
/// </summary>
|
|
/// <param name="address">Virtual address of the region to have the permission changes</param>
|
|
/// <param name="pagesCount">Number of pages to have their permissions changed</param>
|
|
/// <param name="permission">New permission</param>
|
|
/// <returns>Result of the permission change operation</returns>
|
|
protected abstract KernelResult Reprotect(ulong address, ulong pagesCount, KMemoryPermission permission);
|
|
|
|
/// <summary>
|
|
/// Changes the permissions of a given virtual memory region.
|
|
/// </summary>
|
|
/// <param name="address">Virtual address of the region to have the permission changes</param>
|
|
/// <param name="pagesCount">Number of pages to have their permissions changed</param>
|
|
/// <param name="permission">New permission</param>
|
|
/// <returns>Result of the permission change operation</returns>
|
|
protected abstract KernelResult ReprotectWithAttributes(ulong address, ulong pagesCount, KMemoryPermission permission);
|
|
|
|
/// <summary>
|
|
/// Alerts the memory tracking that a given region has been read from or written to.
|
|
/// This should be called before read/write is performed.
|
|
/// </summary>
|
|
/// <param name="va">Virtual address of the region</param>
|
|
/// <param name="size">Size of the region</param>
|
|
protected abstract void SignalMemoryTracking(ulong va, ulong size, bool write);
|
|
|
|
/// <summary>
|
|
/// Writes data to CPU mapped memory, with write tracking.
|
|
/// </summary>
|
|
/// <param name="va">Virtual address to write the data into</param>
|
|
/// <param name="data">Data to be written</param>
|
|
/// <exception cref="Ryujinx.Memory.InvalidMemoryRegionException">Throw for unhandled invalid or unmapped memory accesses</exception>
|
|
protected abstract void Write(ulong va, ReadOnlySpan<byte> data);
|
|
}
|
|
} |