diff --git a/src/SVM.Assembler.Core/Assembler.cs b/src/SVM.Assembler.Core/Assembler.cs
index ca61290..1e1f49c 100644
--- a/src/SVM.Assembler.Core/Assembler.cs
+++ b/src/SVM.Assembler.Core/Assembler.cs
@@ -6,7 +6,7 @@ using System.Collections.Generic;
 
 namespace SVM.Assembler.Core
 {
-	public delegate OperationResult<IntermediateInstruction?> AssemblerFunction(ILexer lexer, IntermediateInstruction instruction, LexSegment leadingSegment);
+	public delegate OperationResult<SVMInstruction> LinkerFunction(LinkingContext context, IntermediateInstruction instruction);
 	public class Assembler
 	{
 		public const string LexDefinition =
@@ -55,13 +55,15 @@ LabelData InternalLbl
 LabelConstant InternalLbl
 ";
 		LexerDefinition? definition;
-		public Dictionary<string, AssemblerFunction> assemblerFunctions = new Dictionary<string, AssemblerFunction>();
-		public Assembler()
+		public ISADefinition ISA;
+		public Assembler(ISADefinition isaDefinition)
 		{
 			if (LexerDefinition.TryParse(LexDefinition, out definition))
 			{
 				definition.Substitute();
 			}
+
+			ISA = isaDefinition;
 		}
 		public OperationResult<LexSegment?> Lex(ILexer lexer)
 		{
@@ -113,11 +115,32 @@ LabelConstant InternalLbl
 			{
 				return operationResult;
 			}
-			if (!assemblerFunctions.TryGetValue(LexDef.LexMatchedItemId, out var assemblerFunction))
+			if (!ISA.InstructionDefinitions.TryGetValue(LexDef.LexMatchedItemId, out var instructionDef))
 			{
 				return operationResult;
 			}
-			return assemblerFunction(lexer, intermediateInstruction, LexDef);
+			foreach (var item in instructionDef.ParameterPattern)
+			{
+				var next = Lex(lexer);
+				if (operationResult.CheckAndInheritErrorAndWarnings(next))
+				{
+					return operationResult;
+				}
+				if (next.Result is null)
+				{
+					return operationResult;
+				}
+				if (next.Result.LexSegmentId is null)
+				{
+					return operationResult;
+				}
+				if (!item.AllowedTokenIds.Contains(next.Result.LexSegmentId))
+				{
+					return operationResult;
+				}
+				intermediateInstruction.Parameters.Add(next.Result);
+			}
+			return intermediateInstruction;
 		}
 		public OperationResult<IntermediateObject> AssembleIntermediateObject(string input, string ID = "main.asm")
 		{
diff --git a/src/SVM.Assembler.Core/ISADefinition.cs b/src/SVM.Assembler.Core/ISADefinition.cs
new file mode 100644
index 0000000..0b740df
--- /dev/null
+++ b/src/SVM.Assembler.Core/ISADefinition.cs
@@ -0,0 +1,21 @@
+using SVM.Core;
+using System.Collections.Generic;
+
+namespace SVM.Assembler.Core
+{
+	public class ISADefinition
+	{
+		public Dictionary<string, InstructionDefinition> InstructionDefinitions = new Dictionary<string, InstructionDefinition>();
+		public Dictionary<PrimaryInstruction, LinkerFunction> LinkerFunctions = new Dictionary<PrimaryInstruction, LinkerFunction>();
+		public void Init()
+		{
+			foreach (var item in InstructionDefinitions)
+			{
+				if (!LinkerFunctions.TryAdd(item.Value.PrimaryInstruction, item.Value.linkerFunction))
+				{
+					LinkerFunctions[item.Value.PrimaryInstruction] = item.Value.linkerFunction;
+				}
+			}
+		}
+	}
+}
diff --git a/src/SVM.Assembler.Core/InstructionDefinition.cs b/src/SVM.Assembler.Core/InstructionDefinition.cs
new file mode 100644
index 0000000..3e5af8f
--- /dev/null
+++ b/src/SVM.Assembler.Core/InstructionDefinition.cs
@@ -0,0 +1,21 @@
+using SVM.Core;
+using System;
+using System.Collections.Generic;
+
+namespace SVM.Assembler.Core
+{
+	[Serializable]
+	public class InstructionDefinition
+	{
+		public string MatchID;
+		public PrimaryInstruction PrimaryInstruction;
+		public LinkerFunction linkerFunction;
+		public InstructionDefinition(string matchID, LinkerFunction assemblerFunction)
+		{
+			MatchID = matchID;
+			this.linkerFunction = assemblerFunction;
+		}
+
+		public List<InstructionParameter> ParameterPattern = new List<InstructionParameter>();
+	}
+}
diff --git a/src/SVM.Assembler.Core/InstructionParameter.cs b/src/SVM.Assembler.Core/InstructionParameter.cs
new file mode 100644
index 0000000..23e6627
--- /dev/null
+++ b/src/SVM.Assembler.Core/InstructionParameter.cs
@@ -0,0 +1,9 @@
+using System.Collections.Generic;
+
+namespace SVM.Assembler.Core
+{
+	public class InstructionParameter
+	{
+		public List<string> AllowedTokenIds = new List<string>();
+	}
+}
diff --git a/src/SVM.Assembler.Core/Linker.cs b/src/SVM.Assembler.Core/Linker.cs
index 168caf3..8f07b1e 100644
--- a/src/SVM.Assembler.Core/Linker.cs
+++ b/src/SVM.Assembler.Core/Linker.cs
@@ -1,6 +1,10 @@
 using LibCLCC.NET.Operations;
 using SVM.Core;
+using SVM.Core.Utils;
+using System;
 using System.Collections.Generic;
+using System.Reflection.Emit;
+using System.Text;
 
 namespace SVM.Assembler.Core
 {
@@ -33,10 +37,46 @@ namespace SVM.Assembler.Core
 			}
 			return operationResult;
 		}
-		public static OperationResult<ManagedSVMProgram?> Freeze(List<IntermediateObject> objs)
+		public unsafe static OperationResult<ManagedSVMProgram?> Finialize(ISADefinition definition, IntermediateObject Obj)
 		{
 			OperationResult<ManagedSVMProgram?> operationResult = new OperationResult<ManagedSVMProgram?>(null);
-
+			ManagedSVMProgram program = new ManagedSVMProgram();
+			LinkingContext context = new LinkingContext(program, Obj);
+			List<byte[]> Data = new List<byte[]>();
+			uint offset = 0;
+			foreach (var item in Obj.data)
+			{
+				var data = Encoding.UTF8.GetBytes(item.Value);
+				byte[] data2 = new byte[data.Length + sizeof(int)];
+				fixed (byte* ptr = data2)
+				{
+					int len = data.Length;
+					((IntPtr)ptr).SetData(len);
+				}
+				Buffer.BlockCopy(data, 0, data2, sizeof(int), data.Length);
+				context.DataOffsets.Add(item.Key, offset);
+				offset += (uint)data2.Length;
+				Data.Add(data);
+			}
+			foreach (var item in Obj.instructions)
+			{
+				if (definition.LinkerFunctions.TryGetValue(item.inst, out var func))
+				{
+					var inst = func(context, item);
+					if (operationResult.CheckAndInheritErrorAndWarnings(inst))
+					{
+						return operationResult;
+					}
+					program.instructions.Add(inst.Result);
+				}
+			}
+			program.Datas = new byte[offset];
+			int offset2 = 0;
+			foreach (var item in Data)
+			{
+				Buffer.BlockCopy(item, 0, program.Datas, offset2, item.Length);
+				offset2 += item.Length;
+			}
 			return operationResult;
 		}
 	}
diff --git a/src/SVM.Assembler.Core/LinkingContext.cs b/src/SVM.Assembler.Core/LinkingContext.cs
new file mode 100644
index 0000000..52df7cc
--- /dev/null
+++ b/src/SVM.Assembler.Core/LinkingContext.cs
@@ -0,0 +1,38 @@
+using SVM.Core;
+using System.Collections.Generic;
+
+namespace SVM.Assembler.Core
+{
+	public class LinkingContext
+	{
+		public Dictionary<string, uint> DataOffsets = new Dictionary<string, uint>();
+		public ManagedSVMProgram Program;
+		public Dictionary<string, int> label = new Dictionary<string, int>();
+		public IntermediateObject IntermediateObject;
+		public LinkingContext(ManagedSVMProgram program, IntermediateObject intermediateObject)
+		{
+			Program = program;
+			IntermediateObject = intermediateObject;
+		}
+		public bool TryFindLabel(string label, out int offset)
+		{
+			label = label + ":";
+			if (this.label.TryGetValue(label, out offset))
+			{
+				return true;
+			}
+			for (int i = 0; i < IntermediateObject.instructions.Count; i++)
+			{
+				IntermediateInstruction? item = IntermediateObject.instructions[i];
+				if (item.Label != null)
+					if (item.Label.Content == label)
+					{
+						this.label.Add(label, i);
+						offset = i;
+						return true;
+					}
+			}
+			return false;
+		}
+	}
+}
diff --git a/src/SVM.Assembler.Core/SVM.Assembler.Core.csproj b/src/SVM.Assembler.Core/SVM.Assembler.Core.csproj
index 3f0e0c6..a4a3d1f 100644
--- a/src/SVM.Assembler.Core/SVM.Assembler.Core.csproj
+++ b/src/SVM.Assembler.Core/SVM.Assembler.Core.csproj
@@ -3,6 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.1</TargetFramework>
     <Nullable>enable</Nullable>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/SVM.Core/SVMProgram.cs b/src/SVM.Core/SVMProgram.cs
index 9fba929..13fe347 100644
--- a/src/SVM.Core/SVMProgram.cs
+++ b/src/SVM.Core/SVMProgram.cs
@@ -8,7 +8,7 @@ namespace SVM.Core
 	public unsafe class ManagedSVMProgram
 	{
 		public List<SVMInstruction> instructions = new List<SVMInstruction>();
-		public List<byte> Datas = new List<byte>();
+		public byte[]? Datas;
 	}
 	public unsafe struct SVMProgram : IDisposable
 	{
diff --git a/src/SVM.Core/Utils/PointerUtils.cs b/src/SVM.Core/Utils/PointerUtils.cs
index d3881b9..f2ce592 100644
--- a/src/SVM.Core/Utils/PointerUtils.cs
+++ b/src/SVM.Core/Utils/PointerUtils.cs
@@ -41,5 +41,10 @@ namespace SVM.Core.Utils
 		{
 			GetDataWithOffsetInStructCount<T>(ptr, (IntPtr)dest, offset);
 		}
+		public static void SetData<T>(this IntPtr ptr, T data) where T : unmanaged
+		{
+			var srcPtr = (byte*)&data;
+			Buffer.MemoryCopy(srcPtr, (byte*)ptr, sizeof(T), sizeof(T));
+		}
 	}
 }