Implement a new physical memory manager and replace DeviceMemory (#856)

* Implement a new physical memory manager and replace DeviceMemory * Proper generic constraints * Fix debug build * Add memory tests * New CPU memory manager and general code cleanup * Remove host memory management from CPU project, use Ryujinx.Memory instead * Fix tests * Document exceptions on MemoryBlock * Fix leak on unix memory allocation * Proper disposal of some objects on tests * Fix JitCache not being set as initialized * GetRef without checks for 8-bits and 16-bits CAS * Add MemoryBlock destructor * Throw in separate method to improve codegen * Address PR feedback * QueryModified improvements * Fix memory write tracking not marking all pages as modified in some cases * Simplify MarkRegionAsModified * Remove XML doc for ghost param * Add back optimization to avoid useless buffer updates * Add Ryujinx.Cpu project, move MemoryManager there and remove MemoryBlockWrapper * Some nits * Do not perform address translation when size is 0 * Address PR feedback and format NativeInterface class * Remove ghost parameter description * Update Ryujinx.Cpu to .NET Core 3.1 * Address PR feedback * Fix build * Return a well defined value for GetPhysicalAddress with invalid VA, and do not return unmapped ranges as modified * Typo
2020-05-03 19:54:50 -03:00 · 2020-05-03 19:54:50 -03:00 · f77694e4f7
commit f77694e4f7
parent 1758424208
126 changed files with 2176 additions and 2092 deletions
--- a/Ryujinx.Cpu/MemoryHelper.cs
+++ b/Ryujinx.Cpu/MemoryHelper.cs
@ -0,0 +1,73 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Ryujinx.Cpu
+{
+    public static class MemoryHelper
+    {
+        public static void FillWithZeros(MemoryManager memory, long position, int size)
+        {
+            int size8 = size & ~(8 - 1);
+
+            for (int offs = 0; offs < size8; offs += 8)
+            {
+                memory.Write<long>((ulong)(position + offs), 0);
+            }
+
+            for (int offs = size8; offs < (size - size8); offs++)
+            {
+                memory.Write<byte>((ulong)(position + offs), 0);
+            }
+        }
+
+        public unsafe static T Read<T>(MemoryManager memory, long position) where T : struct
+        {
+            long size = Marshal.SizeOf<T>();
+
+            byte[] data = new byte[size];
+
+            memory.Read((ulong)position, data);
+
+            fixed (byte* ptr = data)
+            {
+                return Marshal.PtrToStructure<T>((IntPtr)ptr);
+            }
+        }
+
+        public unsafe static void Write<T>(MemoryManager memory, long position, T value) where T : struct
+        {
+            long size = Marshal.SizeOf<T>();
+
+            byte[] data = new byte[size];
+
+            fixed (byte* ptr = data)
+            {
+                Marshal.StructureToPtr<T>(value, (IntPtr)ptr, false);
+            }
+
+            memory.Write((ulong)position, data);
+        }
+
+        public static string ReadAsciiString(MemoryManager memory, long position, long maxSize = -1)
+        {
+            using (MemoryStream ms = new MemoryStream())
+            {
+                for (long offs = 0; offs < maxSize || maxSize == -1; offs++)
+                {
+                    byte value = memory.Read<byte>((ulong)(position + offs));
+
+                    if (value == 0)
+                    {
+                        break;
+                    }
+
+                    ms.WriteByte(value);
+                }
+
+                return Encoding.ASCII.GetString(ms.ToArray());
+            }
+        }
+    }
+}