Executor work

src/main/java/info/sigterm/deob/ClassFile.java

@@ -115,6 +115,19 @@ public class ClassFile
 
 		return null;
 	}
+	
+	public Method findMethod(String name)
+	{
+		Method m = methods.findMethod(name);
+		if (m != null)
+			return m;
+		
+		ClassFile parent = getParent();
+		if (parent != null)
+			return parent.findMethod(name);
+
+		return null;
+	}
 
 	public void buildClassGraph()
 	{

src/main/java/info/sigterm/deob/Deob.java

@@ -1,5 +1,7 @@
 package info.sigterm.deob;
 
+import info.sigterm.deob.execution.Execution;
+
 import java.io.DataInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -24,8 +26,20 @@ public class Deob
 			InputStream is = jar.getInputStream(entry);
 			group.addClass(entry.getName(), new DataInputStream(is));
 		}
+		jar.close();
 
 		group.buildClassGraph();
 		group.buildInstructionGraph();
+		
+		execute(group);
+	}
+	
+	private static void execute(ClassGroup group) throws IOException
+	{
+		ClassFile cf = group.findClass("client");
+		Method method = cf.findMethod("init");
+		
+		Execution e = new Execution(group);
+		e.run(cf, method);
 	}
 }

src/main/java/info/sigterm/deob/Methods.java

@@ -37,6 +37,14 @@ public class Methods
 				return m;
 		return null;
 	}
+	
+	public Method findMethod(String name)
+	{
+		for (Method m : methods)
+			if (m.getName().equals(name))
+				return m;
+		return null;
+	}
 
 	public void buildInstructionGraph()
 	{

src/main/java/info/sigterm/deob/attributes/Code.java

@@ -31,7 +31,7 @@ public class Code extends Attribute
 
 	public int getMaxStack()
 	{
-		return getMaxStack();
+		return maxStack;
 	}
 
 	public int getMaxLocals()

src/main/java/info/sigterm/deob/attributes/code/InstructionType.java

@@ -174,12 +174,12 @@ public enum InstructionType
 	GOTO(0xa7, "goto", Goto.class),
 	TABLESWITCH(0xaa, "tableswitch", TableSwitch.class),
 	LOOKUPSWITCH(0xab, "lookupswitch", LookupSwitch.class),
-	IRETURN(0xac, "ireturn", Instruction.class),
+	IRETURN(0xac, "ireturn", Return.class),
-	LRETURN(0xad, "lreturn", Instruction.class),
+	LRETURN(0xad, "lreturn", Return.class),
-	FRETURN(0xae, "freturn", Instruction.class),
+	FRETURN(0xae, "freturn", Return.class),
-	DRETURN(0xaf, "dreturn", Instruction.class),
+	DRETURN(0xaf, "dreturn", Return.class),
-	ARETURN(0xb0, "areturn", Instruction.class),
+	ARETURN(0xb0, "areturn", Return.class),
-	RETURN(0xb1, "return", Instruction.class),
+	RETURN(0xb1, "return", VReturn.class),
 	GETSTATIC(0xb2, "getstatic", GetStatic.class),
 	PUTSTATIC(0xb3, "putstatic", PutStatic.class),
 	GETFIELD(0xb4, "getfield", GetField.class),
@@ -192,7 +192,7 @@ public enum InstructionType
 	NEWARRAY(0xbc, "newarray", NewArray.class),
 	ANEWARRAY(0xbd, "anewarray", ANewArray.class),
 	ARRAYLENGTH(0xbe, "arraylength", ArrayLength.class),
-	ATHROW(0xbf, "athrow", Instruction.class),
+	ATHROW(0xbf, "athrow", AThrow.class),
 	CHECKCAST(0xc0, "checkcast", CheckCast.class),
 	INSTANCEOf(0xc1, "instanceof", InstanceOf.class),
 	MONITORENTER(0xc2, "monitorenter", MonitorEnter.class),

src/main/java/info/sigterm/deob/attributes/code/instructions/AALoad.java

@@ -22,6 +22,6 @@ public class AALoad extends Instruction
 		int index = (int) stack.pop();
 		ArrayInstance array = (ArrayInstance) stack.pop();
 		
-		stack.push(array.get(index));
+		stack.push(this, array.get(index));
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/AConstNull.java

@@ -19,6 +19,6 @@ public class AConstNull extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(null);
+		stack.push(this, null);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ALoad.java

@@ -25,6 +25,6 @@ public class ALoad extends Instruction
 	public void execute(Frame frame)
 	{
 		Object obj = frame.getVariables().get(index);
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ALoad_0.java

@@ -19,6 +19,6 @@ public class ALoad_0 extends Instruction
 	{
 		Object obj = frame.getVariables().get(0);
 		assert obj != null;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ALoad_1.java

@@ -18,7 +18,6 @@ public class ALoad_1 extends Instruction
 	public void execute(Frame frame)
 	{
 		Object obj = frame.getVariables().get(1);
-		assert obj != null;
+		frame.getStack().push(this, obj);
-		frame.getStack().push(obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ALoad_2.java

@@ -18,7 +18,6 @@ public class ALoad_2 extends Instruction
 	public void execute(Frame frame)
 	{
 		Object obj = frame.getVariables().get(2);
-		assert obj != null;
+		frame.getStack().push(this, obj);
-		frame.getStack().push(obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ALoad_3.java

@@ -19,6 +19,6 @@ public class ALoad_3 extends Instruction
 	{
 		Object obj = frame.getVariables().get(3);
 		assert obj != null;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ANewArray.java

@@ -36,13 +36,13 @@ public class ANewArray extends Instruction
 		ClassFile cf = thisClass.getGroup().findClass(clazz.getName());
 		if (cf == null)
 		{
-			frame.getStack().push(null);
+			frame.getStack().push(this, null);
 			return;
 		}
 		
 		ClassInstance type = frame.getPath().getClassInstance(cf);
 		ArrayInstance array = frame.getPath().createArray(type, count);
 		
-		frame.getStack().push(array);
+		frame.getStack().push(this, array);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/AStore_1.java

@@ -18,7 +18,6 @@ public class AStore_1 extends Instruction
 	public void execute(Frame frame)
 	{
 		Object obj = frame.getStack().pop();
-		assert obj != null;
 		frame.getVariables().set(1, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/AStore_2.java

@@ -18,7 +18,6 @@ public class AStore_2 extends Instruction
 	public void execute(Frame frame)
 	{
 		Object obj = frame.getStack().pop();
-		assert obj != null;
 		frame.getVariables().set(2, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/AThrow.java

@@ -0,0 +1,24 @@
+package info.sigterm.deob.attributes.code.instructions;
+
+import info.sigterm.deob.attributes.code.Instruction;
+import info.sigterm.deob.attributes.code.InstructionType;
+import info.sigterm.deob.attributes.code.Instructions;
+import info.sigterm.deob.execution.Frame;
+import info.sigterm.deob.execution.ObjectInstance;
+
+import java.io.IOException;
+
+public class AThrow extends Instruction
+{
+	public AThrow(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame e)
+	{
+		ObjectInstance exception = (ObjectInstance) e.getStack().pop();
+		e.getPath().throwException(exception);
+	}
+}

src/main/java/info/sigterm/deob/attributes/code/instructions/ArrayLength.java

@@ -3,6 +3,7 @@ package info.sigterm.deob.attributes.code.instructions;
 import info.sigterm.deob.attributes.code.Instruction;
 import info.sigterm.deob.attributes.code.InstructionType;
 import info.sigterm.deob.attributes.code.Instructions;
+import info.sigterm.deob.execution.ArrayInstance;
 import info.sigterm.deob.execution.Frame;
 
 import java.io.IOException;
@@ -17,7 +18,7 @@ public class ArrayLength extends Instruction
 	@Override
 	public void execute(Frame frame)
 	{
-		Object[] array = (Object[]) frame.getStack().pop();
+		ArrayInstance array = (ArrayInstance) frame.getStack().pop();
-		frame.getStack().push(array.length);
+		frame.getStack().push(this, array.getLength());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/BALoad.java

@@ -21,6 +21,6 @@ public class BALoad extends Instruction
 		int index = (int) stack.pop();
 		boolean[] array = (boolean[]) stack.pop();
 		
-		stack.push(array[index]);
+		stack.push(this, array[index]);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/BiPush.java

@@ -24,6 +24,6 @@ public class BiPush extends Instruction
 	@Override
 	public void execute(Frame frame)
 	{
-		frame.getStack().push((int) b);
+		frame.getStack().push(this, (int) b);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/CALoad.java

@@ -21,6 +21,6 @@ public class CALoad extends Instruction
 		int index = (int) stack.pop();
 		char[] array = (char[]) stack.pop();
 		
-		stack.push(array[index]);
+		stack.push(this, array[index]);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/CheckCast.java

@@ -36,7 +36,7 @@ public class CheckCast extends Instruction
 		ObjectInstance obj = (ObjectInstance) e.getStack().pop();
 		if (obj == null)
 		{
-			e.getStack().push(null);
+			e.getStack().push(this, null);
 			return;
 		}
 		
@@ -48,7 +48,7 @@ public class CheckCast extends Instruction
 			// XXX throw
 		}
 		
-		e.getStack().push(obj);
+		e.getStack().push(this, obj);
 	}
 
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/D2F.java

@@ -24,6 +24,6 @@ public class D2F extends Instruction
 		assert obj instanceof Double;
 
 		Double d = (Double) obj;
-		stack.push(d.floatValue());
+		stack.push(this, d.floatValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/D2I.java

@@ -24,6 +24,6 @@ public class D2I extends Instruction
 		assert obj instanceof Double;
 
 		Double d = (Double) obj;
-		stack.push(d.intValue());
+		stack.push(this, d.intValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/D2L.java

@@ -24,6 +24,6 @@ public class D2L extends Instruction
 		assert obj instanceof Double;
 
 		Double d = (Double) obj;
-		stack.push(d.longValue());
+		stack.push(this, d.longValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DALoad.java

@@ -21,6 +21,6 @@ public class DALoad extends Instruction
 		int index = (int) stack.pop();
 		double[] array = (double[]) stack.pop();
 		
-		stack.push(array[index]);
+		stack.push(this, array[index]);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DAdd.java

@@ -21,6 +21,6 @@ public class DAdd extends Instruction
 		Double two = (Double) stack.pop();
 		Double one = (Double) stack.pop();
 		
-		stack.push(one + two);
+		stack.push(this, one + two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DCmpG.java

@@ -24,12 +24,12 @@ public class DCmpG extends Instruction
 		Double two = (Double) stack.pop();
 
 		if (one.isNaN() || two.isNaN())
-			stack.push(1);
+			stack.push(this, 1);
 		else if (one > two)
-			stack.push(1);
+			stack.push(this, 1);
 		else if (one < two)
-			stack.push(-1);
+			stack.push(this, -1);
 		else
-			stack.push(0);
+			stack.push(this, 0);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DCmpL.java

@@ -24,12 +24,12 @@ public class DCmpL extends Instruction
 		Double two = (Double) stack.pop();
 
 		if (one.isNaN() || two.isNaN())
-			stack.push(-1);
+			stack.push(this, -1);
 		else if (one > two)
-			stack.push(1);
+			stack.push(this, 1);
 		else if (one < two)
-			stack.push(-1);
+			stack.push(this, -1);
 		else
-			stack.push(0);
+			stack.push(this, 0);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DConst_0.java

@@ -19,6 +19,6 @@ public class DConst_0 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(0d);
+		stack.push(this, 0d);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DConst_1.java

@@ -19,6 +19,6 @@ public class DConst_1 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(1d);
+		stack.push(this, 1d);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DDiv.java

@@ -21,6 +21,6 @@ public class DDiv extends Instruction
 		Double two = (Double) stack.pop();
 		Double one = (Double) stack.pop();
 		
-		stack.push(one / two);
+		stack.push(this, one / two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DLoad.java

@@ -25,6 +25,6 @@ public class DLoad extends Instruction
 	public void execute(Frame frame)
 	{
 		double d = (double) frame.getVariables().get(index);
-		frame.getStack().push(d);
+		frame.getStack().push(this, d);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DLoad_0.java

@@ -19,6 +19,6 @@ public class DLoad_0 extends Instruction
 	{
 		Object obj = frame.getVariables().get(0);
 		assert obj instanceof Double;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DLoad_1.java

@@ -19,6 +19,6 @@ public class DLoad_1 extends Instruction
 	{
 		Object obj = frame.getVariables().get(1);
 		assert obj instanceof Double;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DLoad_2.java

@@ -19,6 +19,6 @@ public class DLoad_2 extends Instruction
 	{
 		Object obj = frame.getVariables().get(2);
 		assert obj instanceof Double;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DLoad_3.java

@@ -19,6 +19,6 @@ public class DLoad_3 extends Instruction
 	{
 		Object obj = frame.getVariables().get(3);
 		assert obj instanceof Double;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DMul.java

@@ -21,6 +21,6 @@ public class DMul extends Instruction
 		Double two = (Double) stack.pop();
 		Double one = (Double) stack.pop();
 		
-		stack.push(one * two);
+		stack.push(this, one * two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DNeg.java

@@ -19,6 +19,6 @@ public class DNeg extends Instruction
 		Stack stack = frame.getStack();
 		
 		Double value = (Double) stack.pop();
-		stack.push(-value);
+		stack.push(this, -value);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DRem.java

@@ -21,6 +21,6 @@ public class DRem extends Instruction
 		Double two = (Double) stack.pop();
 		Double one = (Double) stack.pop();
 		
-		stack.push(one % two);
+		stack.push(this, one % two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/DSub.java

@@ -21,6 +21,6 @@ public class DSub extends Instruction
 		Double two = (Double) stack.pop();
 		Double one = (Double) stack.pop();
 		
-		stack.push(one - two);
+		stack.push(this, one - two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/Dup.java

@@ -18,7 +18,7 @@ public class Dup extends Instruction
 	public void execute(Frame frame)
 	{
 		Object obj = frame.getStack().pop();
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/Dup2.java

@@ -26,11 +26,11 @@ public class Dup2 extends Instruction
 			two = stack.pop();
 
 		if (!(one instanceof Double) && !(one instanceof Long))
-			stack.push(two);
+			stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 
 		if (!(one instanceof Double) && !(one instanceof Long))
-			stack.push(two);
+			stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/Dup2_X1.java

@@ -27,13 +27,13 @@ public class Dup2_X1 extends Instruction
 		Object three = stack.pop();
 
 		if (!(one instanceof Double) && !(one instanceof Long))
-			stack.push(two);
+			stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 
-		stack.push(three);
+		stack.push(this, three);
 
 		if (!(one instanceof Double) && !(one instanceof Long))
-			stack.push(two);
+			stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/Dup2_X2.java

@@ -30,15 +30,15 @@ public class Dup2_X2 extends Instruction
 			four = stack.pop();
 
 		if (!(one instanceof Double) && !(one instanceof Long))
-			stack.push(two);
+			stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 
 		if (!(three instanceof Double) && !(three instanceof Long))
-			stack.push(four);
+			stack.push(this, four);
-		stack.push(three);
+		stack.push(this, three);
 
 		if (!(one instanceof Double) && !(one instanceof Long))
-			stack.push(two);
+			stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/Dup_X1.java

@@ -23,8 +23,8 @@ public class Dup_X1 extends Instruction
 		Object one = stack.pop();
 		Object two = stack.pop();
 
-		stack.push(one);
+		stack.push(this, one);
-		stack.push(two);
+		stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/Dup_X2.java

@@ -26,10 +26,10 @@ public class Dup_X2 extends Instruction
 		if (!(two instanceof Double) && !(two instanceof Long))
 			three = stack.pop();
 
-		stack.push(one);
+		stack.push(this, one);
 		if (!(two instanceof Double) && !(two instanceof Long))
-			stack.push(three);
+			stack.push(this, three);
-		stack.push(two);
+		stack.push(this, two);
-		stack.push(one);
+		stack.push(this, one);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/F2D.java

@@ -24,6 +24,6 @@ public class F2D extends Instruction
 		assert obj instanceof Float;
 
 		Float f = (Float) obj;
-		stack.push(f.doubleValue());
+		stack.push(this, f.doubleValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/F2I.java

@@ -24,6 +24,6 @@ public class F2I extends Instruction
 		assert obj instanceof Float;
 
 		Float f = (Float) obj;
-		stack.push(f.intValue());
+		stack.push(this, f.intValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/F2L.java

@@ -24,6 +24,6 @@ public class F2L extends Instruction
 		assert obj instanceof Float;
 
 		Float f = (Float) obj;
-		stack.push(f.longValue());
+		stack.push(this, f.longValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FALoad.java

@@ -21,6 +21,6 @@ public class FALoad extends Instruction
 		int index = (int) stack.pop();
 		float[] array = (float[]) stack.pop();
 		
-		stack.push(array[index]);
+		stack.push(this, array[index]);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FAdd.java

@@ -21,6 +21,6 @@ public class FAdd extends Instruction
 		Float one = (Float) stack.pop();
 		Float two = (Float) stack.pop();
 		
-		stack.push(one + two);
+		stack.push(this, one + two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FCmpG.java

@@ -24,12 +24,12 @@ public class FCmpG extends Instruction
 		Float two = (Float) stack.pop();
 
 		if (one.isNaN() || two.isNaN())
-			stack.push(1);
+			stack.push(this, 1);
 		else if (one > two)
-			stack.push(1);
+			stack.push(this, 1);
 		else if (one < two)
-			stack.push(-1);
+			stack.push(this, -1);
 		else
-			stack.push(0);
+			stack.push(this, 0);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FCmpL.java

@@ -24,12 +24,12 @@ public class FCmpL extends Instruction
 		Float two = (Float) stack.pop();
 
 		if (one.isNaN() || two.isNaN())
-			stack.push(-1);
+			stack.push(this, -1);
 		else if (one > two)
-			stack.push(1);
+			stack.push(this, 1);
 		else if (one < two)
-			stack.push(-1);
+			stack.push(this, -1);
 		else
-			stack.push(0);
+			stack.push(this, 0);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FConst_0.java

@@ -19,6 +19,6 @@ public class FConst_0 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(0f);
+		stack.push(this, 0f);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FConst_1.java

@@ -19,6 +19,6 @@ public class FConst_1 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(1f);
+		stack.push(this, 1f);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FConst_2.java

@@ -19,6 +19,6 @@ public class FConst_2 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(2f);
+		stack.push(this, 2f);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FDiv.java

@@ -21,6 +21,6 @@ public class FDiv extends Instruction
 		Float two = (Float) stack.pop();
 		Float one = (Float) stack.pop();
 		
-		stack.push(one / two);
+		stack.push(this, one / two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FLoad.java

@@ -25,6 +25,6 @@ public class FLoad extends Instruction
 	public void execute(Frame frame)
 	{
 		float f = (float) frame.getVariables().get(index);
-		frame.getStack().push(f);
+		frame.getStack().push(this, f);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FLoad_0.java

@@ -19,6 +19,6 @@ public class FLoad_0 extends Instruction
 	{
 		Object obj = frame.getVariables().get(0);
 		assert obj instanceof Float;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FLoad_1.java

@@ -19,6 +19,6 @@ public class FLoad_1 extends Instruction
 	{
 		Object obj = frame.getVariables().get(1);
 		assert obj instanceof Float;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FLoad_2.java

@@ -19,6 +19,6 @@ public class FLoad_2 extends Instruction
 	{
 		Object obj = frame.getVariables().get(2);
 		assert obj instanceof Float;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FLoad_3.java

@@ -19,6 +19,6 @@ public class FLoad_3 extends Instruction
 	{
 		Object obj = frame.getVariables().get(3);
 		assert obj instanceof Float;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FMul.java

@@ -21,6 +21,6 @@ public class FMul extends Instruction
 		Float two = (Float) stack.pop();
 		Float one = (Float) stack.pop();
 		
-		stack.push(one * two);
+		stack.push(this, one * two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FNeg.java

@@ -19,6 +19,6 @@ public class FNeg extends Instruction
 		Stack stack = frame.getStack();
 		
 		Float value = (Float) stack.pop();
-		stack.push(-value);
+		stack.push(this, -value);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FRem.java

@@ -21,6 +21,6 @@ public class FRem extends Instruction
 		Float two = (Float) stack.pop();
 		Float one = (Float) stack.pop();
 		
-		stack.push(one % two);
+		stack.push(this, one % two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/FSub.java

@@ -21,6 +21,6 @@ public class FSub extends Instruction
 		Float two = (Float) stack.pop();
 		Float one = (Float) stack.pop();
 		
-		stack.push(one - two);
+		stack.push(this, one - two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/GetField.java

@@ -39,7 +39,13 @@ public class GetField extends Instruction
 
 		NameAndType nat = entry.getNameAndType();
 		
+		if (object == null)
+		{
+			frame.getStack().push(this, null);
+			return;
+		}
+		
 		FieldInstance field = object.getField(nat);
-		frame.getStack().push(field.getValue());
+		frame.getStack().push(this, field.getValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/GetStatic.java

@@ -43,7 +43,7 @@ public class GetStatic extends Instruction
 		if (cf == null)
 		{
 			Object ovalue = nat.getStackObject();
-			frame.getStack().push(ovalue);
+			frame.getStack().push(this, ovalue);
 			return;
 		}
 
@@ -51,7 +51,7 @@ public class GetStatic extends Instruction
 		StaticFieldInstance fi = ci.findStaticField(nat);
 		Object ovalue = fi.getValue();
 
-		frame.getStack().push(ovalue);
+		frame.getStack().push(this, ovalue);
 	}
 
 	@Override

src/main/java/info/sigterm/deob/attributes/code/instructions/I2B.java

@@ -24,6 +24,6 @@ public class I2B extends Instruction
 		assert obj instanceof Integer;
 
 		Integer i = (Integer) obj;
-		stack.push(i.byteValue());
+		stack.push(this, i.byteValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/I2C.java

@@ -24,6 +24,6 @@ public class I2C extends Instruction
 		assert obj instanceof Integer;
 
 		Integer i = (Integer) obj;
-		stack.push((char) i.intValue());
+		stack.push(this, (char) i.intValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/I2D.java

@@ -24,6 +24,6 @@ public class I2D extends Instruction
 		assert obj instanceof Integer;
 
 		Integer i = (Integer) obj;
-		stack.push(i.doubleValue());
+		stack.push(this, i.doubleValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/I2F.java

@@ -24,6 +24,6 @@ public class I2F extends Instruction
 		assert obj instanceof Integer;
 
 		Integer i = (Integer) obj;
-		stack.push(i.floatValue());
+		stack.push(this, i.floatValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/I2L.java

@@ -24,6 +24,6 @@ public class I2L extends Instruction
 		assert obj instanceof Integer;
 
 		Integer i = (Integer) obj;
-		stack.push(i.longValue());
+		stack.push(this, i.longValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/I2S.java

@@ -24,6 +24,6 @@ public class I2S extends Instruction
 		assert obj instanceof Integer;
 
 		Integer i = (Integer) obj;
-		stack.push(i.shortValue());
+		stack.push(this, i.shortValue());
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IALoad.java

@@ -21,6 +21,6 @@ public class IALoad extends Instruction
 		int index = (int) stack.pop();
 		int[] array = (int[]) stack.pop();
 		
-		stack.push(array[index]);
+		stack.push(this, array[index]);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IAdd.java

@@ -21,6 +21,6 @@ public class IAdd extends Instruction
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
 		
-		stack.push(one + two);
+		stack.push(this, one + two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IAnd.java

@@ -20,6 +20,6 @@ public class IAnd extends Instruction
 		
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
-		stack.push(one & two);
+		stack.push(this, one & two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IConst_0.java

@@ -19,6 +19,6 @@ public class IConst_0 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(0);
+		stack.push(this, 0);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IConst_1.java

@@ -19,6 +19,6 @@ public class IConst_1 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(1);
+		stack.push(this, 1);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IConst_2.java

@@ -19,6 +19,6 @@ public class IConst_2 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(2);
+		stack.push(this, 2);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IConst_3.java

@@ -19,6 +19,6 @@ public class IConst_3 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(3);
+		stack.push(this, 3);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IConst_4.java

@@ -19,6 +19,6 @@ public class IConst_4 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(4);
+		stack.push(this, 4);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IConst_5.java

@@ -19,6 +19,6 @@ public class IConst_5 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(5);
+		stack.push(this, 5);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IConst_M1.java

@@ -19,6 +19,6 @@ public class IConst_M1 extends Instruction
 	public void execute(Frame frame)
 	{
 		Stack stack = frame.getStack();
-		stack.push(-1);
+		stack.push(this, -1);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IDiv.java

@@ -21,6 +21,6 @@ public class IDiv extends Instruction
 		Double two = (Double) stack.pop();
 		Double one = (Double) stack.pop();
 		
-		stack.push(one / two);
+		stack.push(this, one / two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ILoad.java

@@ -25,6 +25,6 @@ public class ILoad extends Instruction
 	public void execute(Frame frame)
 	{
 		int i = (int) frame.getVariables().get(index);
-		frame.getStack().push(i);
+		frame.getStack().push(this, i);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ILoad_0.java

@@ -19,6 +19,6 @@ public class ILoad_0 extends Instruction
 	{
 		Object obj = frame.getVariables().get(0);
 		assert obj instanceof Integer;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ILoad_1.java

@@ -19,6 +19,6 @@ public class ILoad_1 extends Instruction
 	{
 		Object obj = frame.getVariables().get(1);
 		assert obj instanceof Integer;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ILoad_2.java

@@ -19,6 +19,6 @@ public class ILoad_2 extends Instruction
 	{
 		Object obj = frame.getVariables().get(2);
 		assert obj instanceof Integer;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ILoad_3.java

@@ -19,6 +19,6 @@ public class ILoad_3 extends Instruction
 	{
 		Object obj = frame.getVariables().get(3);
 		assert obj instanceof Integer;
-		frame.getStack().push(obj);
+		frame.getStack().push(this, obj);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IMul.java

@@ -21,6 +21,6 @@ public class IMul extends Instruction
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
 		
-		stack.push(one * two);
+		stack.push(this, one * two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/INeg.java

@@ -19,6 +19,6 @@ public class INeg extends Instruction
 		Stack stack = frame.getStack();
 		
 		Integer value = (Integer) stack.pop();
-		stack.push(-value);
+		stack.push(this, -value);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IOr.java

@@ -20,6 +20,6 @@ public class IOr extends Instruction
 		
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
-		stack.push(one | two);
+		stack.push(this, one | two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IRem.java

@@ -21,6 +21,6 @@ public class IRem extends Instruction
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
 		
-		stack.push(one % two);
+		stack.push(this, one % two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IShL.java

@@ -20,6 +20,6 @@ public class IShL extends Instruction
 		
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
-		stack.push(one << (two & 0x1F));
+		stack.push(this, one << (two & 0x1F));
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IShR.java

@@ -20,6 +20,6 @@ public class IShR extends Instruction
 		
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
-		stack.push(one >> (two & 0x1F));
+		stack.push(this, one >> (two & 0x1F));
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/ISub.java

@@ -21,6 +21,6 @@ public class ISub extends Instruction
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
 		
-		stack.push(one - two);
+		stack.push(this, one - two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IUShR.java

@@ -20,6 +20,6 @@ public class IUShR extends Instruction
 		
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
-		stack.push(one >>> (two & 0x1F));
+		stack.push(this, one >>> (two & 0x1F));
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/IXor.java

@@ -20,6 +20,6 @@ public class IXor extends Instruction
 		
 		Integer two = (Integer) stack.pop();
 		Integer one = (Integer) stack.pop();
-		stack.push(one ^ two);
+		stack.push(this, one ^ two);
 	}
 }

src/main/java/info/sigterm/deob/attributes/code/instructions/InstanceOf.java

@@ -36,13 +36,13 @@ public class InstanceOf extends Instruction
 		ObjectInstanceBase obj = (ObjectInstanceBase) e.getStack().pop();
 		if (obj == null)
 		{
-			e.getStack().push(0);
+			e.getStack().push(this, 0);
 			return;
 			
 		}
 		
 		ClassFile otherClass = thisClass.getGroup().findClass(clazz.getName());
 		boolean instanceOf = obj.getType().getClassFile().instanceOf(otherClass);
-		e.getStack().push(instanceOf ? 1 : 0);
+		e.getStack().push(this, instanceOf ? 1 : 0);
 	}
 }