Move solution and projects to src

src/Ryujinx.Memory/WritableRegion.cs

@@ -0,0 +1,38 @@
+using System;
+
+namespace Ryujinx.Memory
+{
+    public sealed class WritableRegion : IDisposable
+    {
+        private readonly IWritableBlock _block;
+        private readonly ulong _va;
+        private readonly bool _tracked;
+
+        private bool NeedsWriteback => _block != null;
+
+        public Memory<byte> Memory { get; }
+
+        public WritableRegion(IWritableBlock block, ulong va, Memory<byte> memory, bool tracked = false)
+        {
+            _block = block;
+            _va = va;
+            _tracked = tracked;
+            Memory = memory;
+        }
+
+        public void Dispose()
+        {
+            if (NeedsWriteback)
+            {
+                if (_tracked)
+                {
+                    _block.Write(_va, Memory.Span);
+                }
+                else
+                {
+                    _block.WriteUntracked(_va, Memory.Span);
+                }
+            }
+        }
+    }
+}