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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
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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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54
src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs
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@ -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;
}
}