refactored code and minor bug fixing

bindings/dotnet/UnicornSamples/Utils.cs

@@ -0,0 +1,47 @@
+using Gee.External.Capstone;
+using Gee.External.Capstone.X86;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UnicornSamples
+{
+    internal static class Utils
+    {
+        public static Int64 ToInt(Byte[] val)
+        {
+            UInt64 res = 0;
+            for (var i = 0; i < val.Length; i++)
+            {
+                var v = val[i] & 0xFF;
+                res += (UInt64)(v << (i * 8));
+            }
+            return (Int64)res;
+        }
+
+        public static Byte[] Int64ToBytes(Int64 intVal)
+        {
+            var res = new Byte[8];
+            var uval = (UInt64)intVal;
+            for (var i = 0; i < res.Length; i++)
+            {
+                res[i] = (Byte)(uval & 0xff);
+                uval = uval >> 8;
+            }
+            return res;
+        }
+
+        public static String Disassemble(CapstoneDisassembler<X86Instruction, X86Register, X86InstructionGroup, X86InstructionDetail> disassembler, Byte[] code)
+        {
+            var sb = new StringBuilder();
+            var instructions = disassembler.DisassembleAll(code);
+            foreach (var instruction in instructions)
+            {
+                sb.AppendFormat("{0} {1}{2}", instruction.Mnemonic, instruction.Operand, Environment.NewLine);
+            }
+            return sb.ToString().Trim();
+        }
+    }
+}