diff options
Diffstat (limited to 'Ryujinx.Cpu/MemoryManager.cs')
| -rw-r--r-- | Ryujinx.Cpu/MemoryManager.cs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Ryujinx.Cpu/MemoryManager.cs b/Ryujinx.Cpu/MemoryManager.cs index 001c41f8..211a8c0d 100644 --- a/Ryujinx.Cpu/MemoryManager.cs +++ b/Ryujinx.Cpu/MemoryManager.cs @@ -194,6 +194,38 @@ namespace Ryujinx.Cpu } /// <summary> + /// Gets a region of memory that can be written to. + /// </summary> + /// <remarks> + /// If the requested region is not contiguous in physical memory, + /// this will perform an allocation, and flush the data (writing it + /// back to guest memory) on disposal. + /// </remarks> + /// <param name="va">Virtual address of the data</param> + /// <param name="size">Size of the data</param> + /// <returns>A writable region of memory containing the data</returns> + public WritableRegion GetWritableRegion(ulong va, int size) + { + if (size == 0) + { + return new WritableRegion(null, va, Memory<byte>.Empty); + } + + if (IsContiguous(va, size)) + { + return new WritableRegion(null, va, _backingMemory.GetMemory(GetPhysicalAddressInternal(va), size)); + } + else + { + Memory<byte> memory = new byte[size]; + + GetSpan(va, size).CopyTo(memory.Span); + + return new WritableRegion(this, va, memory); + } + } + + /// <summary> /// Gets a reference for the given type at the specified virtual memory address. /// </summary> /// <remarks> |