diff options
Diffstat (limited to 'src/Ryujinx.Cpu')
| -rw-r--r-- | src/Ryujinx.Cpu/AddressSpace.cs | 45 | ||||
| -rw-r--r-- | src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs | 19 |
2 files changed, 48 insertions, 16 deletions
diff --git a/src/Ryujinx.Cpu/AddressSpace.cs b/src/Ryujinx.Cpu/AddressSpace.cs index 9dc32426..0e27b158 100644 --- a/src/Ryujinx.Cpu/AddressSpace.cs +++ b/src/Ryujinx.Cpu/AddressSpace.cs @@ -5,7 +5,7 @@ using System; namespace Ryujinx.Cpu { - class AddressSpace : IDisposable + public class AddressSpace : IDisposable { private const ulong PageSize = 0x1000; @@ -154,7 +154,9 @@ namespace Ryujinx.Cpu public MemoryBlock Base { get; } public MemoryBlock Mirror { get; } - public AddressSpace(MemoryBlock backingMemory, ulong asSize, bool supports4KBPages) + public ulong AddressSpaceSize { get; } + + public AddressSpace(MemoryBlock backingMemory, MemoryBlock baseMemory, MemoryBlock mirrorMemory, ulong addressSpaceSize, bool supports4KBPages) { if (!supports4KBPages) { @@ -163,17 +165,48 @@ namespace Ryujinx.Cpu _privateTree = new IntrusiveRedBlackTree<PrivateMapping>(); _treeLock = new object(); - _mappingTree.Add(new Mapping(0UL, asSize, MappingType.None)); - _privateTree.Add(new PrivateMapping(0UL, asSize, default)); + _mappingTree.Add(new Mapping(0UL, addressSpaceSize, MappingType.None)); + _privateTree.Add(new PrivateMapping(0UL, addressSpaceSize, default)); } _backingMemory = backingMemory; _supports4KBPages = supports4KBPages; + Base = baseMemory; + Mirror = mirrorMemory; + AddressSpaceSize = addressSpaceSize; + } + + public static bool TryCreate(MemoryBlock backingMemory, ulong asSize, bool supports4KBPages, out AddressSpace addressSpace) + { + addressSpace = null; + MemoryAllocationFlags asFlags = MemoryAllocationFlags.Reserve | MemoryAllocationFlags.ViewCompatible; - Base = new MemoryBlock(asSize, asFlags); - Mirror = new MemoryBlock(asSize, asFlags); + ulong minAddressSpaceSize = Math.Min(asSize, 1UL << 36); + + // Attempt to create the address space with expected size or try to reduce it until it succeed. + for (ulong addressSpaceSize = asSize; addressSpaceSize >= minAddressSpaceSize; addressSpaceSize >>= 1) + { + MemoryBlock baseMemory = null; + MemoryBlock mirrorMemory = null; + + try + { + baseMemory = new MemoryBlock(addressSpaceSize, asFlags); + mirrorMemory = new MemoryBlock(addressSpaceSize, asFlags); + addressSpace = new AddressSpace(backingMemory, baseMemory, mirrorMemory, addressSpaceSize, supports4KBPages); + + break; + } + catch (OutOfMemoryException) + { + baseMemory?.Dispose(); + mirrorMemory?.Dispose(); + } + } + + return addressSpace != null; } public void Map(ulong va, ulong pa, ulong size, MemoryMapFlags flags) diff --git a/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs b/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs index 363f9000..3686eb08 100644 --- a/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs +++ b/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs @@ -38,7 +38,8 @@ namespace Ryujinx.Cpu.Jit private readonly bool _unsafeMode; private readonly AddressSpace _addressSpace; - private readonly ulong _addressSpaceSize; + + public ulong AddressSpaceSize { get; } private readonly PageTable<ulong> _pageTable; @@ -62,21 +63,21 @@ namespace Ryujinx.Cpu.Jit /// <summary> /// Creates a new instance of the host mapped memory manager. /// </summary> - /// <param name="backingMemory">Physical backing memory where virtual memory will be mapped to</param> - /// <param name="addressSpaceSize">Size of the address space</param> + /// <param name="addressSpace">Address space instance to use</param> /// <param name="unsafeMode">True if unmanaged access should not be masked (unsafe), false otherwise.</param> /// <param name="invalidAccessHandler">Optional function to handle invalid memory accesses</param> - public MemoryManagerHostMapped(MemoryBlock backingMemory, ulong addressSpaceSize, bool unsafeMode, InvalidAccessHandler invalidAccessHandler = null) + public MemoryManagerHostMapped(AddressSpace addressSpace, bool unsafeMode, InvalidAccessHandler invalidAccessHandler) { + _addressSpace = addressSpace; _pageTable = new PageTable<ulong>(); _invalidAccessHandler = invalidAccessHandler; _unsafeMode = unsafeMode; - _addressSpaceSize = addressSpaceSize; + AddressSpaceSize = addressSpace.AddressSpaceSize; ulong asSize = PageSize; int asBits = PageBits; - while (asSize < addressSpaceSize) + while (asSize < AddressSpaceSize) { asSize <<= 1; asBits++; @@ -86,8 +87,6 @@ namespace Ryujinx.Cpu.Jit _pageBitmap = new ulong[1 << (AddressSpaceBits - (PageBits + PageToPteShift))]; - _addressSpace = new AddressSpace(backingMemory, asSize, Supports4KBPages); - Tracking = new MemoryTracking(this, (int)MemoryBlock.GetPageSize(), invalidAccessHandler); _memoryEh = new MemoryEhMeilleure(_addressSpace.Base, _addressSpace.Mirror, Tracking); } @@ -99,7 +98,7 @@ namespace Ryujinx.Cpu.Jit /// <returns>True if the virtual address is part of the addressable space</returns> private bool ValidateAddress(ulong va) { - return va < _addressSpaceSize; + return va < AddressSpaceSize; } /// <summary> @@ -111,7 +110,7 @@ namespace Ryujinx.Cpu.Jit private bool ValidateAddressAndSize(ulong va, ulong size) { ulong endVa = va + size; - return endVa >= va && endVa >= size && endVa <= _addressSpaceSize; + return endVa >= va && endVa >= size && endVa <= AddressSpaceSize; } /// <summary> |