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Refactor memory managers to a common base class, consolidate Read() method logic (#6360)

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* - add new abstract class `VirtualMemoryManagerBase`
- rename `MemoryManagerBase` to `VirtualMemoryManagerRefCountedBase` and derive from `VirtualMemoryManagerBase`
- change `AddressSpaceManager`, `HvMemoryManager`, `MemoryManager`, and `MemoryManagerHostMapped` to implement abstract members and use the inherited `void VirtualMemoryManagerBase.Read(TVirtual va, Span<byte> data)` implementation.

* move property `AddressSpaceSize` up by the other properties
This commit is contained in:
jhorv 2024-03-09 19:01:51 -05:00 committed by GitHub
parent 3924bd1a43
commit a3a63d4394
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6 changed files with 161 additions and 295 deletions
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114
src/Ryujinx.Cpu/AppleHv/HvMemoryManager.cs
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@ -16,12 +16,8 @@ namespace Ryujinx.Cpu.AppleHv
/// Represents a CPU memory manager which maps guest virtual memory directly onto the Hypervisor page table.
/// </summary>
[SupportedOSPlatform("macos")]
public class HvMemoryManager : MemoryManagerBase, IMemoryManager, IVirtualMemoryManagerTracked, IWritableBlock
public class HvMemoryManager : VirtualMemoryManagerRefCountedBase<ulong, ulong>, IMemoryManager, IVirtualMemoryManagerTracked, IWritableBlock
{
public const int PageBits = 12;
public const int PageSize = 1 << PageBits;
public const int PageMask = PageSize - 1;
public const int PageToPteShift = 5; // 32 pages (2 bits each) in one ulong page table entry.
public const ulong BlockMappedMask = 0x5555555555555555; // First bit of each table entry set.
@ -39,8 +35,6 @@ namespace Ryujinx.Cpu.AppleHv
private readonly InvalidAccessHandler _invalidAccessHandler;
private readonly ulong _addressSpaceSize;
private readonly HvAddressSpace _addressSpace;
internal HvAddressSpace AddressSpace => _addressSpace;
@ -62,6 +56,8 @@ namespace Ryujinx.Cpu.AppleHv
public event Action<ulong, ulong> UnmapEvent;
protected override ulong AddressSpaceSize { get; }
/// <summary>
/// Creates a new instance of the Hypervisor memory manager.
/// </summary>
@ -73,7 +69,7 @@ namespace Ryujinx.Cpu.AppleHv
_backingMemory = backingMemory;
_pageTable = new PageTable<ulong>();
_invalidAccessHandler = invalidAccessHandler;
_addressSpaceSize = addressSpaceSize;
AddressSpaceSize = addressSpaceSize;
ulong asSize = PageSize;
int asBits = PageBits;
@ -92,42 +88,6 @@ namespace Ryujinx.Cpu.AppleHv
Tracking = new MemoryTracking(this, PageSize, invalidAccessHandler);
}
/// <summary>
/// Checks if the virtual address is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address</param>
/// <returns>True if the virtual address is part of the addressable space</returns>
private bool ValidateAddress(ulong va)
{
return va < _addressSpaceSize;
}
/// <summary>
/// Checks if the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <returns>True if the combination of virtual address and size is part of the addressable space</returns>
private bool ValidateAddressAndSize(ulong va, ulong size)
{
ulong endVa = va + size;
return endVa >= va && endVa >= size && endVa <= _addressSpaceSize;
}
/// <summary>
/// Ensures the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <exception cref="InvalidMemoryRegionException">Throw when the memory region specified outside the addressable space</exception>
private void AssertValidAddressAndSize(ulong va, ulong size)
{
if (!ValidateAddressAndSize(va, size))
{
throw new InvalidMemoryRegionException($"va=0x{va:X16}, size=0x{size:X16}");
}
}
/// <inheritdoc/>
public void Map(ulong va, ulong pa, ulong size, MemoryMapFlags flags)
{
@ -209,9 +169,19 @@ namespace Ryujinx.Cpu.AppleHv
}
/// <inheritdoc/>
public void Read(ulong va, Span<byte> data)
public override void Read(ulong va, Span<byte> data)
{
ReadImpl(va, data);
try
{
base.Read(va, data);
}
catch (InvalidMemoryRegionException)
{
if (_invalidAccessHandler == null || !_invalidAccessHandler(va))
{
throw;
}
}
}
/// <inheritdoc/>
@ -340,7 +310,7 @@ namespace Ryujinx.Cpu.AppleHv
{
Span<byte> data = new byte[size];
ReadImpl(va, data);
base.Read(va, data);
return data;
}
@ -367,7 +337,7 @@ namespace Ryujinx.Cpu.AppleHv
{
Memory<byte> memory = new byte[size];
ReadImpl(va, memory.Span);
base.Read(va, memory.Span);
return new WritableRegion(this, va, memory);
}
@ -576,48 +546,6 @@ namespace Ryujinx.Cpu.AppleHv
return regions;
}
private void ReadImpl(ulong va, Span<byte> data)
{
if (data.Length == 0)
{
return;
}
try
{
AssertValidAddressAndSize(va, (ulong)data.Length);
int offset = 0, size;
if ((va & PageMask) != 0)
{
ulong pa = GetPhysicalAddressChecked(va);
size = Math.Min(data.Length, PageSize - (int)(va & PageMask));
_backingMemory.GetSpan(pa, size).CopyTo(data[..size]);
offset += size;
}
for (; offset < data.Length; offset += size)
{
ulong pa = GetPhysicalAddressChecked(va + (ulong)offset);
size = Math.Min(data.Length - offset, PageSize);
_backingMemory.GetSpan(pa, size).CopyTo(data.Slice(offset, size));
}
}
catch (InvalidMemoryRegionException)
{
if (_invalidAccessHandler == null || !_invalidAccessHandler(va))
{
throw;
}
}
}
/// <inheritdoc/>
/// <remarks>
/// This function also validates that the given range is both valid and mapped, and will throw if it is not.
@ -936,6 +864,10 @@ namespace Ryujinx.Cpu.AppleHv
_addressSpace.Dispose();
}
private static void ThrowInvalidMemoryRegionException(string message) => throw new InvalidMemoryRegionException(message);
protected override Span<byte> GetPhysicalAddressSpan(ulong pa, int size)
=> _backingMemory.GetSpan(pa, size);
protected override ulong TranslateVirtualAddressForRead(ulong va)
=> GetPhysicalAddressChecked(va);
}
}

107
src/Ryujinx.Cpu/Jit/MemoryManager.cs
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@ -14,12 +14,8 @@ namespace Ryujinx.Cpu.Jit
/// <summary>
/// Represents a CPU memory manager.
/// </summary>
public sealed class MemoryManager : MemoryManagerBase, IMemoryManager, IVirtualMemoryManagerTracked, IWritableBlock
public sealed class MemoryManager : VirtualMemoryManagerRefCountedBase<ulong, ulong>, IMemoryManager, IVirtualMemoryManagerTracked, IWritableBlock
{
public const int PageBits = 12;
public const int PageSize = 1 << PageBits;
public const int PageMask = PageSize - 1;
private const int PteSize = 8;
private const int PointerTagBit = 62;
@ -35,8 +31,6 @@ namespace Ryujinx.Cpu.Jit
/// </summary>
public int AddressSpaceBits { get; }
private readonly ulong _addressSpaceSize;
private readonly MemoryBlock _pageTable;
/// <summary>
@ -50,6 +44,8 @@ namespace Ryujinx.Cpu.Jit
public event Action<ulong, ulong> UnmapEvent;
protected override ulong AddressSpaceSize { get; }
/// <summary>
/// Creates a new instance of the memory manager.
/// </summary>
@ -71,7 +67,7 @@ namespace Ryujinx.Cpu.Jit
}
AddressSpaceBits = asBits;
_addressSpaceSize = asSize;
AddressSpaceSize = asSize;
_pageTable = new MemoryBlock((asSize / PageSize) * PteSize);
Tracking = new MemoryTracking(this, PageSize);
@ -153,9 +149,19 @@ namespace Ryujinx.Cpu.Jit
}
/// <inheritdoc/>
public void Read(ulong va, Span<byte> data)
public override void Read(ulong va, Span<byte> data)
{
ReadImpl(va, data);
try
{
base.Read(va, data);
}
catch (InvalidMemoryRegionException)
{
if (_invalidAccessHandler == null || !_invalidAccessHandler(va))
{
throw;
}
}
}
/// <inheritdoc/>
@ -290,7 +296,7 @@ namespace Ryujinx.Cpu.Jit
{
Span<byte> data = new byte[size];
ReadImpl(va, data);
base.Read(va, data);
return data;
}
@ -462,48 +468,6 @@ namespace Ryujinx.Cpu.Jit
return regions;
}
private void ReadImpl(ulong va, Span<byte> data)
{
if (data.Length == 0)
{
return;
}
try
{
AssertValidAddressAndSize(va, (ulong)data.Length);
int offset = 0, size;
if ((va & PageMask) != 0)
{
ulong pa = GetPhysicalAddressInternal(va);
size = Math.Min(data.Length, PageSize - (int)(va & PageMask));
_backingMemory.GetSpan(pa, size).CopyTo(data[..size]);
offset += size;
}
for (; offset < data.Length; offset += size)
{
ulong pa = GetPhysicalAddressInternal(va + (ulong)offset);
size = Math.Min(data.Length - offset, PageSize);
_backingMemory.GetSpan(pa, size).CopyTo(data.Slice(offset, size));
}
}
catch (InvalidMemoryRegionException)
{
if (_invalidAccessHandler == null || !_invalidAccessHandler(va))
{
throw;
}
}
}
/// <inheritdoc/>
public bool IsRangeMapped(ulong va, ulong size)
{
@ -544,37 +508,6 @@ namespace Ryujinx.Cpu.Jit
return _pageTable.Read<ulong>((va / PageSize) * PteSize) != 0;
}
private bool ValidateAddress(ulong va)
{
return va < _addressSpaceSize;
}
/// <summary>
/// Checks if the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <returns>True if the combination of virtual address and size is part of the addressable space</returns>
private bool ValidateAddressAndSize(ulong va, ulong size)
{
ulong endVa = va + size;
return endVa >= va && endVa >= size && endVa <= _addressSpaceSize;
}
/// <summary>
/// Ensures the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <exception cref="InvalidMemoryRegionException">Throw when the memory region specified outside the addressable space</exception>
private void AssertValidAddressAndSize(ulong va, ulong size)
{
if (!ValidateAddressAndSize(va, size))
{
throw new InvalidMemoryRegionException($"va=0x{va:X16}, size=0x{size:X16}");
}
}
private ulong GetPhysicalAddressInternal(ulong va)
{
return PteToPa(_pageTable.Read<ulong>((va / PageSize) * PteSize) & ~(0xffffUL << 48)) + (va & PageMask);
@ -691,5 +624,11 @@ namespace Ryujinx.Cpu.Jit
/// Disposes of resources used by the memory manager.
/// </summary>
protected override void Destroy() => _pageTable.Dispose();
protected override Span<byte> GetPhysicalAddressSpan(ulong pa, int size)
=> _backingMemory.GetSpan(pa, size);
protected override ulong TranslateVirtualAddressForRead(ulong va)
=> GetPhysicalAddressInternal(va);
}
}

54
src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs
View File

@ -13,12 +13,8 @@ namespace Ryujinx.Cpu.Jit
/// <summary>
/// Represents a CPU memory manager which maps guest virtual memory directly onto a host virtual region.
/// </summary>
public sealed class MemoryManagerHostMapped : MemoryManagerBase, IMemoryManager, IVirtualMemoryManagerTracked, IWritableBlock
public sealed class MemoryManagerHostMapped : VirtualMemoryManagerRefCountedBase<ulong, ulong>, IMemoryManager, IVirtualMemoryManagerTracked, IWritableBlock
{
public const int PageBits = 12;
public const int PageSize = 1 << PageBits;
public const int PageMask = PageSize - 1;
public const int PageToPteShift = 5; // 32 pages (2 bits each) in one ulong page table entry.
public const ulong BlockMappedMask = 0x5555555555555555; // First bit of each table entry set.
@ -39,8 +35,6 @@ namespace Ryujinx.Cpu.Jit
private readonly AddressSpace _addressSpace;
public ulong AddressSpaceSize { get; }
private readonly PageTable<ulong> _pageTable;
private readonly MemoryEhMeilleure _memoryEh;
@ -60,6 +54,8 @@ namespace Ryujinx.Cpu.Jit
public event Action<ulong, ulong> UnmapEvent;
protected override ulong AddressSpaceSize { get; }
/// <summary>
/// Creates a new instance of the host mapped memory manager.
/// </summary>
@ -91,42 +87,6 @@ namespace Ryujinx.Cpu.Jit
_memoryEh = new MemoryEhMeilleure(_addressSpace.Base, _addressSpace.Mirror, Tracking);
}
/// <summary>
/// Checks if the virtual address is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address</param>
/// <returns>True if the virtual address is part of the addressable space</returns>
private bool ValidateAddress(ulong va)
{
return va < AddressSpaceSize;
}
/// <summary>
/// Checks if the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <returns>True if the combination of virtual address and size is part of the addressable space</returns>
private bool ValidateAddressAndSize(ulong va, ulong size)
{
ulong endVa = va + size;
return endVa >= va && endVa >= size && endVa <= AddressSpaceSize;
}
/// <summary>
/// Ensures the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <exception cref="InvalidMemoryRegionException">Throw when the memory region specified outside the addressable space</exception>
private void AssertValidAddressAndSize(ulong va, ulong size)
{
if (!ValidateAddressAndSize(va, size))
{
throw new InvalidMemoryRegionException($"va=0x{va:X16}, size=0x{size:X16}");
}
}
/// <summary>
/// Ensures the combination of virtual address and size is part of the addressable space and fully mapped.
/// </summary>
@ -235,7 +195,7 @@ namespace Ryujinx.Cpu.Jit
}
/// <inheritdoc/>
public void Read(ulong va, Span<byte> data)
public override void Read(ulong va, Span<byte> data)
{
try
{
@ -816,6 +776,10 @@ namespace Ryujinx.Cpu.Jit
_memoryEh.Dispose();
}
private static void ThrowInvalidMemoryRegionException(string message) => throw new InvalidMemoryRegionException(message);
protected override Span<byte> GetPhysicalAddressSpan(ulong pa, int size)
=> _addressSpace.Mirror.GetSpan(pa, size);
protected override ulong TranslateVirtualAddressForRead(ulong va)
=> va;
}
}

5
src/Ryujinx.Cpu/MemoryManagerBase.cs → src/Ryujinx.Cpu/VirtualMemoryManagerRefCountedBase.cs
View File

@ -1,10 +1,13 @@
using Ryujinx.Memory;
using System.Diagnostics;
using System.Numerics;
using System.Threading;
namespace Ryujinx.Cpu
{
public abstract class MemoryManagerBase : IRefCounted
public abstract class VirtualMemoryManagerRefCountedBase<TVirtual, TPhysical> : VirtualMemoryManagerBase<TVirtual, TPhysical>, IRefCounted
where TVirtual : IBinaryInteger<TVirtual>
where TPhysical : IBinaryInteger<TPhysical>
{
private int _referenceCount;

85
src/Ryujinx.Memory/AddressSpaceManager.cs
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@ -11,12 +11,8 @@ namespace Ryujinx.Memory
/// Represents a address space manager.
/// Supports virtual memory region mapping, address translation and read/write access to mapped regions.
/// </summary>
public sealed class AddressSpaceManager : IVirtualMemoryManager, IWritableBlock
public sealed class AddressSpaceManager : VirtualMemoryManagerBase<ulong, nuint>, IVirtualMemoryManager, IWritableBlock
{
public const int PageBits = PageTable<nuint>.PageBits;
public const int PageSize = PageTable<nuint>.PageSize;
public const int PageMask = PageTable<nuint>.PageMask;
/// <inheritdoc/>
public bool Supports4KBPages => true;
@ -25,11 +21,11 @@ namespace Ryujinx.Memory
/// </summary>
public int AddressSpaceBits { get; }
private readonly ulong _addressSpaceSize;
private readonly MemoryBlock _backingMemory;
private readonly PageTable<nuint> _pageTable;
protected override ulong AddressSpaceSize { get; }
/// <summary>
/// Creates a new instance of the memory manager.
/// </summary>
@ -47,7 +43,7 @@ namespace Ryujinx.Memory
}
AddressSpaceBits = asBits;
_addressSpaceSize = asSize;
AddressSpaceSize = asSize;
_backingMemory = backingMemory;
_pageTable = new PageTable<nuint>();
}
@ -102,12 +98,6 @@ namespace Ryujinx.Memory
return MemoryMarshal.Cast<byte, T>(GetSpan(va, Unsafe.SizeOf<T>()))[0];
}
/// <inheritdoc/>
public void Read(ulong va, Span<byte> data)
{
ReadImpl(va, data);
}
/// <inheritdoc/>
public void Write<T>(ulong va, T value) where T : unmanaged
{
@ -174,7 +164,7 @@ namespace Ryujinx.Memory
{
Span<byte> data = new byte[size];
ReadImpl(va, data);
Read(va, data);
return data;
}
@ -346,34 +336,6 @@ namespace Ryujinx.Memory
return regions;
}
private void ReadImpl(ulong va, Span<byte> data)
{
if (data.Length == 0)
{
return;
}
AssertValidAddressAndSize(va, (ulong)data.Length);
int offset = 0, size;
if ((va & PageMask) != 0)
{
size = Math.Min(data.Length, PageSize - (int)(va & PageMask));
GetHostSpanContiguous(va, size).CopyTo(data[..size]);
offset += size;
}
for (; offset < data.Length; offset += size)
{
size = Math.Min(data.Length - offset, PageSize);
GetHostSpanContiguous(va + (ulong)offset, size).CopyTo(data.Slice(offset, size));
}
}
/// <inheritdoc/>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public bool IsMapped(ulong va)
@ -414,37 +376,6 @@ namespace Ryujinx.Memory
return true;
}
private bool ValidateAddress(ulong va)
{
return va < _addressSpaceSize;
}
/// <summary>
/// Checks if the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <returns>True if the combination of virtual address and size is part of the addressable space</returns>
private bool ValidateAddressAndSize(ulong va, ulong size)
{
ulong endVa = va + size;
return endVa >= va && endVa >= size && endVa <= _addressSpaceSize;
}
/// <summary>
/// Ensures the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <exception cref="InvalidMemoryRegionException">Throw when the memory region specified outside the addressable space</exception>
private void AssertValidAddressAndSize(ulong va, ulong size)
{
if (!ValidateAddressAndSize(va, size))
{
throw new InvalidMemoryRegionException($"va=0x{va:X16}, size=0x{size:X16}");
}
}
private unsafe Span<byte> GetHostSpanContiguous(ulong va, int size)
{
return new Span<byte>((void*)GetHostAddress(va), size);
@ -471,5 +402,11 @@ namespace Ryujinx.Memory
{
// Only the ARM Memory Manager has tracking for now.
}
protected override unsafe Span<byte> GetPhysicalAddressSpan(nuint pa, int size)
=> new((void*)pa, size);
protected override nuint TranslateVirtualAddressForRead(ulong va)
=> GetHostAddress(va);
}
}

91
src/Ryujinx.Memory/VirtualMemoryManagerBase.cs Normal file
View File

@ -0,0 +1,91 @@
using System;
using System.Numerics;
namespace Ryujinx.Memory
{
public abstract class VirtualMemoryManagerBase<TVirtual, TPhysical>
where TVirtual : IBinaryInteger<TVirtual>
where TPhysical : IBinaryInteger<TPhysical>
{
public const int PageBits = 12;
public const int PageSize = 1 << PageBits;
public const int PageMask = PageSize - 1;
protected abstract TVirtual AddressSpaceSize { get; }
public virtual void Read(TVirtual va, Span<byte> data)
{
if (data.Length == 0)
{
return;
}
AssertValidAddressAndSize(va, TVirtual.CreateChecked(data.Length));
int offset = 0, size;
if ((int.CreateTruncating(va) & PageMask) != 0)
{
TPhysical pa = TranslateVirtualAddressForRead(va);
size = Math.Min(data.Length, PageSize - ((int.CreateTruncating(va) & PageMask)));
GetPhysicalAddressSpan(pa, size).CopyTo(data[..size]);
offset += size;
}
for (; offset < data.Length; offset += size)
{
TPhysical pa = TranslateVirtualAddressForRead(va + TVirtual.CreateChecked(offset));
size = Math.Min(data.Length - offset, PageSize);
GetPhysicalAddressSpan(pa, size).CopyTo(data.Slice(offset, size));
}
}
/// <summary>
/// Ensures the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <exception cref="InvalidMemoryRegionException">Throw when the memory region specified outside the addressable space</exception>
protected void AssertValidAddressAndSize(TVirtual va, TVirtual size)
{
if (!ValidateAddressAndSize(va, size))
{
throw new InvalidMemoryRegionException($"va=0x{va:X16}, size=0x{size:X16}");
}
}
protected abstract Span<byte> GetPhysicalAddressSpan(TPhysical pa, int size);
protected abstract TPhysical TranslateVirtualAddressForRead(TVirtual va);
/// <summary>
/// Checks if the virtual address is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address</param>
/// <returns>True if the virtual address is part of the addressable space</returns>
protected bool ValidateAddress(TVirtual va)
{
return va < AddressSpaceSize;
}
/// <summary>
/// Checks if the combination of virtual address and size is part of the addressable space.
/// </summary>
/// <param name="va">Virtual address of the range</param>
/// <param name="size">Size of the range in bytes</param>
/// <returns>True if the combination of virtual address and size is part of the addressable space</returns>
protected bool ValidateAddressAndSize(TVirtual va, TVirtual size)
{
TVirtual endVa = va + size;
return endVa >= va && endVa >= size && endVa <= AddressSpaceSize;
}
protected static void ThrowInvalidMemoryRegionException(string message)
=> throw new InvalidMemoryRegionException(message);
}
}