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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
6 changed files with 161 additions and 295 deletions
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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);
}
}