Split main project into core,graphics and chocolarm4 subproject (#29)

1 files changed, 73 insertions, 0 deletions

diff --git a/ChocolArm64/Memory/AMemoryHelper.cs b/ChocolArm64/Memory/AMemoryHelper.cs
new file mode 100644
index 00000000..219aeebf
--- /dev/null
+++ b/ChocolArm64/Memory/AMemoryHelper.cs
@@ -0,0 +1,73 @@
+using System.IO;
+using System.Text;
+
+namespace ChocolArm64.Memory
+{
+    public static class AMemoryHelper
+    {
+        public static void FillWithZeros(AMemory Memory, long Position, int Size)
+        {
+            int Size8 = Size & ~(8 - 1);
+
+            for (int Offs = 0; Offs < Size8; Offs += 8)
+            {
+                Memory.WriteInt64(Position + Offs, 0);
+            }
+
+            for (int Offs = Size8; Offs < (Size - Size8); Offs++)
+            {
+                Memory.WriteByte(Position + Offs, 0);
+            }
+        }
+
+        public static byte[] ReadBytes(AMemory Memory, long Position, int Size)
+        {
+            byte[] Data = new byte[Size];
+
+            for (int Offs = 0; Offs < Size; Offs++)
+            {
+                Data[Offs] = (byte)Memory.ReadByte(Position + Offs);
+            }
+
+            return Data;
+        }
+
+        public static void WriteBytes(AMemory Memory, long Position, byte[] Data)
+        {
+            for (int Offs = 0; Offs < Data.Length; Offs++)
+            {
+                Memory.WriteByte(Position + Offs, Data[Offs]);
+            }
+        }
+
+        public static string ReadAsciiString(AMemory Memory, long Position, int MaxSize = -1)
+        {
+            using (MemoryStream MS = new MemoryStream())
+            {
+                for (int Offs = 0; Offs < MaxSize || MaxSize == -1; Offs++)
+                {
+                    byte Value = (byte)Memory.ReadByte(Position + Offs);
+
+                    if (Value == 0)
+                    {
+                        break;
+                    }
+
+                    MS.WriteByte(Value);
+                }
+
+                return Encoding.ASCII.GetString(MS.ToArray());
+            }
+        }
+
+        public static long PageRoundUp(long Value)
+        {
+            return (Value + AMemoryMgr.PageMask) & ~AMemoryMgr.PageMask;
+        }
+
+        public static long PageRoundDown(long Value)
+        {
+            return Value & ~AMemoryMgr.PageMask;
+        }
+    }
+}
\ No newline at end of file