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-rw-r--r--Ryujinx.Cpu/MemoryHelper.cs73
1 files changed, 73 insertions, 0 deletions
diff --git a/Ryujinx.Cpu/MemoryHelper.cs b/Ryujinx.Cpu/MemoryHelper.cs
new file mode 100644
index 00000000..5ba5ef38
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+++ 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());
+ }
+ }
+ }
+} \ No newline at end of file