More execution, including getstatic

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

@@ -70,6 +70,11 @@ public class ClassFile
 		return pool;
 	}
 
+	public Fields getFields()
+	{
+		return fields;
+	}
+
 	public String getName()
 	{
 		Class entry = (Class) pool.getEntry(this_class);

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

@@ -10,6 +10,16 @@ import java.util.ArrayList;
 
 public class Field
 {
+	public static int ACC_PUBLIC = 0x0001;
+	public static int ACC_PRIVATE = 0x0002;
+	public static int ACC_PROTECTED = 0x0004;
+	public static int ACC_STATIC = 0x0008;
+	public static int ACC_FINAL = 0x0010;
+	public static int ACC_VOLATILE = 0x0040;
+	public static int ACC_TRANSIENT = 0x0080;
+	public static int ACC_SYNTHETIC = 0x1000;
+	public static int ACC_ENUM = 0x4000;
+
 	private Fields fields;
 
 	private short accessFlags;
@@ -36,6 +46,11 @@ public class Field
 		return fields;
 	}
 
+	public short getAccessFlags()
+	{
+		return accessFlags;
+	}
+
 	public String getName()
 	{
 		UTF8 u = (UTF8) fields.getClassFile().getPool().getEntry(nameIndex);
@@ -48,6 +63,11 @@ public class Field
 		return u.getValue();
 	}
 
+	public Attributes getAttributes()
+	{
+		return attributes;
+	}
+
 	public void addReference(Instruction ins)
 	{
 		instructions.add(ins);

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

@@ -30,6 +30,11 @@ public class Fields
 		return classFile;
 	}
 
+	public Field[] getFields()
+	{
+		return fields;
+	}
+
 	public Field findField(NameAndType nat)
 	{
 		for (Field f : fields)

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

@@ -1,5 +1,7 @@
 package info.sigterm.deob.attributes;
 
+import info.sigterm.deob.pool.PoolEntry;
+
 import java.io.DataInputStream;
 import java.io.IOException;
 
@@ -14,4 +16,9 @@ public class ConstantValue extends Attribute
 		DataInputStream is = attributes.getStream();
 		constantVlaueIndex = is.readUnsignedShort();
 	}
+
+	public PoolEntry getValue()
+	{
+		return this.getAttributes().getClassFile().getPool().getEntry(constantVlaueIndex);
+	}
 }

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

@@ -93,12 +93,12 @@ public enum InstructionType
 	SASTORE(0x56, "sastore", Instruction.class),
 	POP(0x57, "pop", Pop.class),
 	POP2(0x58, "pop2", Pop2.class),
-	DUP(0x59, "dup", Instruction.class),
+	DUP(0x59, "dup", Dup.class),
-	DUP_X1(0x5a, "dup_x1", Instruction.class),
+	DUP_X1(0x5a, "dup_x1", Dup_X1.class),
-	DUP_X2(0x5b, "dup_x2", Instruction.class),
+	DUP_X2(0x5b, "dup_x2", Dup_X2.class),
-	DUP2(0x5c, "dup2", Instruction.class),
+	DUP2(0x5c, "dup2", Dup2.class),
-	DUP2_X1(0x5d, "dup2_x1", Instruction.class),
+	DUP2_X1(0x5d, "dup2_x1", Dup2_X1.class),
-	DUP2_X2(0x5e, "dup2_x2", Instruction.class),
+	DUP2_X2(0x5e, "dup2_x2", Dup2_X2.class),
 	SWAP(0x5f, "swap", Instruction.class),
 	IADD(0x60, "iadd", Instruction.class),
 	LADD(0x61, "ladd", Instruction.class),
@@ -137,26 +137,26 @@ public enum InstructionType
 	IXOR(0x82, "ixor", Instruction.class),
 	LXOR(0x83, "lxor", Instruction.class),
 	IINC(0x84, "iinc", IInc.class),
-	I2L(0x85, "i2l", Instruction.class),
+	I2L(0x85, "i2l", I2L.class),
-	I2F(0x86, "i2f", Instruction.class),
+	I2F(0x86, "i2f", I2F.class),
-	I2D(0x87, "i2d", Instruction.class),
+	I2D(0x87, "i2d", I2D.class),
-	L2I(0x88, "l2i", Instruction.class),
+	L2I(0x88, "l2i", L2I.class),
-	L2F(0x89, "l2f", Instruction.class),
+	L2F(0x89, "l2f", L2F.class),
-	L2D(0x8a, "l2d", Instruction.class),
+	L2D(0x8a, "l2d", L2D.class),
-	F2I(0x8b, "f2i", Instruction.class),
+	F2I(0x8b, "f2i", F2I.class),
-	F2L(0x8c, "f2l", Instruction.class),
+	F2L(0x8c, "f2l", F2L.class),
-	F2D(0x8d, "f2d", Instruction.class),
+	F2D(0x8d, "f2d", F2D.class),
-	D2I(0x8e, "d2i", Instruction.class),
+	D2I(0x8e, "d2i", D2I.class),
-	D2L(0x8f, "d2l", Instruction.class),
+	D2L(0x8f, "d2l", D2L.class),
-	D2F(0x90, "d2f", Instruction.class),
+	D2F(0x90, "d2f", D2F.class),
-	I2B(0x91, "i2b", Instruction.class),
+	I2B(0x91, "i2b", I2B.class),
-	I2C(0x92, "i2c", Instruction.class),
+	I2C(0x92, "i2c", I2C.class),
-	I2S(0x93, "i2s", Instruction.class),
+	I2S(0x93, "i2s", I2S.class),
-	LCMP(0x94, "lcmp", Instruction.class),
+	LCMP(0x94, "lcmp", LCmp.class),
-	FCMPL(0x95, "fcmpl", Instruction.class),
+	FCMPL(0x95, "fcmpl", FCmpL.class),
-	FCMPG(0x96, "fcmpg", Instruction.class),
+	FCMPG(0x96, "fcmpg", FCmpG.class),
-	DCMPL(0x97, "dcmpl", Instruction.class),
+	DCMPL(0x97, "dcmpl", DCmpL.class),
-	DCMPG(0x98, "dcmpg", Instruction.class),
+	DCMPG(0x98, "dcmpg", DCmpG.class),
 	IFEQ(0x99, "ifeq", Branch.class),
 	IFNE(0x9a, "ifne", Branch.class),
 	IFLT(0x9b, "iflt", Branch.class),

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class D2F extends Instruction
+{
+	public D2F(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Double;
+
+		Double d = (Double) obj;
+		stack.push(d.floatValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class D2I extends Instruction
+{
+	public D2I(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Double;
+
+		Double d = (Double) obj;
+		stack.push(d.intValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class D2L extends Instruction
+{
+	public D2L(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Double;
+
+		Double d = (Double) obj;
+		stack.push(d.longValue());
+	}
+}

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

@@ -0,0 +1,35 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class DCmpG extends Instruction
+{
+	public DCmpG(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Double one = (Double) stack.pop();
+		Double two = (Double) stack.pop();
+
+		if (one.isNaN() || two.isNaN())
+			stack.push(1);
+		else if (one > two)
+			stack.push(1);
+		else if (one < two)
+			stack.push(-1);
+		else
+			stack.push(0);
+	}
+}

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

@@ -0,0 +1,35 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class DCmpL extends Instruction
+{
+	public DCmpL(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Double one = (Double) stack.pop();
+		Double two = (Double) stack.pop();
+
+		if (one.isNaN() || two.isNaN())
+			stack.push(-1);
+		else if (one > two)
+			stack.push(1);
+		else if (one < two)
+			stack.push(-1);
+		else
+			stack.push(0);
+	}
+}

src/main/java/info/sigterm/deob/attributes/code/instructions/Dup.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 java.io.IOException;
+
+public class Dup extends Instruction
+{
+	public Dup(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Object obj = frame.getStack().pop();
+		frame.getStack().push(obj);
+		frame.getStack().push(obj);
+	}
+}

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

@@ -0,0 +1,36 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class Dup2 extends Instruction
+{
+	public Dup2(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object one = stack.pop();
+		Object two = null;
+		if (!(one instanceof Double) && !(one instanceof Long))
+			two = stack.pop();
+
+		if (!(one instanceof Double) && !(one instanceof Long))
+			stack.push(two);
+		stack.push(one);
+
+		if (!(one instanceof Double) && !(one instanceof Long))
+			stack.push(two);
+		stack.push(one);
+	}
+}

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

@@ -0,0 +1,39 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class Dup2_X1 extends Instruction
+{
+	public Dup2_X1(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object one = stack.pop();
+		Object two = null;
+		if (!(one instanceof Double) && !(one instanceof Long))
+			two = stack.pop();
+		Object three = stack.pop();
+
+		if (!(one instanceof Double) && !(one instanceof Long))
+			stack.push(two);
+		stack.push(one);
+
+		stack.push(three);
+
+		if (!(one instanceof Double) && !(one instanceof Long))
+			stack.push(two);
+		stack.push(one);
+	}
+}

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

@@ -0,0 +1,44 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class Dup2_X2 extends Instruction
+{
+	public Dup2_X2(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object one = stack.pop();
+		Object two = null;
+		if (!(one instanceof Double) && !(one instanceof Long))
+			two = stack.pop();
+		Object three = stack.pop();
+		Object four = null;
+		if (!(three instanceof Double) && !(three instanceof Long))
+			four = stack.pop();
+
+		if (!(one instanceof Double) && !(one instanceof Long))
+			stack.push(two);
+		stack.push(one);
+
+		if (!(three instanceof Double) && !(three instanceof Long))
+			stack.push(four);
+		stack.push(three);
+
+		if (!(one instanceof Double) && !(one instanceof Long))
+			stack.push(two);
+		stack.push(one);
+	}
+}

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

@@ -0,0 +1,30 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class Dup_X1 extends Instruction
+{
+	public Dup_X1(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object one = stack.pop();
+		Object two = stack.pop();
+
+		stack.push(one);
+		stack.push(two);
+		stack.push(one);
+	}
+}

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

@@ -0,0 +1,35 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class Dup_X2 extends Instruction
+{
+	public Dup_X2(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object one = stack.pop();
+		Object two = stack.pop();
+		Object three = null;
+		if (!(two instanceof Double) && !(two instanceof Long))
+			three = stack.pop();
+
+		stack.push(one);
+		if (!(two instanceof Double) && !(two instanceof Long))
+			stack.push(three);
+		stack.push(two);
+		stack.push(one);
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class F2D extends Instruction
+{
+	public F2D(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Float;
+
+		Float f = (Float) obj;
+		stack.push(f.doubleValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class F2I extends Instruction
+{
+	public F2I(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Float;
+
+		Float f = (Float) obj;
+		stack.push(f.intValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class F2L extends Instruction
+{
+	public F2L(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Float;
+
+		Float f = (Float) obj;
+		stack.push(f.longValue());
+	}
+}

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

@@ -0,0 +1,35 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class FCmpG extends Instruction
+{
+	public FCmpG(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Float one = (Float) stack.pop();
+		Float two = (Float) stack.pop();
+
+		if (one.isNaN() || two.isNaN())
+			stack.push(1);
+		else if (one > two)
+			stack.push(1);
+		else if (one < two)
+			stack.push(-1);
+		else
+			stack.push(0);
+	}
+}

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

@@ -0,0 +1,35 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class FCmpL extends Instruction
+{
+	public FCmpL(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Float one = (Float) stack.pop();
+		Float two = (Float) stack.pop();
+
+		if (one.isNaN() || two.isNaN())
+			stack.push(-1);
+		else if (one > two)
+			stack.push(1);
+		else if (one < two)
+			stack.push(-1);
+		else
+			stack.push(0);
+	}
+}

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

@@ -2,12 +2,17 @@ package info.sigterm.deob.attributes.code.instructions;
 
 import info.sigterm.deob.ClassFile;
 import info.sigterm.deob.ConstantPool;
+import info.sigterm.deob.attributes.ConstantValue;
 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.ClassInstance;
+import info.sigterm.deob.execution.Frame;
+import info.sigterm.deob.execution.StaticFieldInstance;
 import info.sigterm.deob.pool.Class;
 import info.sigterm.deob.pool.Field;
 import info.sigterm.deob.pool.NameAndType;
+import info.sigterm.deob.pool.PoolEntry;
 
 import java.io.DataInputStream;
 import java.io.IOException;
@@ -25,6 +30,35 @@ public class GetStatic extends Instruction
 		length += 2;
 	}
 
+	@Override
+	public void execute(Frame frame)
+	{
+		ClassFile thisClass = this.getInstructions().getCode().getAttributes().getClassFile();
+
+		ConstantPool pool = thisClass.getPool();
+		Field entry = (Field) pool.getEntry(index);
+
+		Class clazz = entry.getClassEntry();
+		NameAndType nat = entry.getNameAndType();
+
+		ClassFile cf = thisClass.getGroup().findClass(clazz.getName());
+		if (cf == null)
+		{
+			Object ovalue = nat.getStackObject();
+			frame.getStack().push(ovalue);
+			return;
+		}
+
+		ClassInstance ci = frame.getPath().getClassInstance(cf);
+		StaticFieldInstance fi = ci.findStaticField(nat);
+		ConstantValue value = fi.getValue();
+
+		PoolEntry pe = value.getValue();
+		Object ovalue = pe.getObject();
+
+		frame.getStack().push(ovalue);
+	}
+
 	@Override
 	public void buildInstructionGraph()
 	{

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class I2B extends Instruction
+{
+	public I2B(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Integer;
+
+		Integer i = (Integer) obj;
+		stack.push(i.byteValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class I2C extends Instruction
+{
+	public I2C(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Integer;
+
+		Integer i = (Integer) obj;
+		stack.push((char) i.intValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class I2D extends Instruction
+{
+	public I2D(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Integer;
+
+		Integer i = (Integer) obj;
+		stack.push(i.doubleValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class I2F extends Instruction
+{
+	public I2F(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Integer;
+
+		Integer i = (Integer) obj;
+		stack.push(i.floatValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class I2L extends Instruction
+{
+	public I2L(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Integer;
+
+		Integer i = (Integer) obj;
+		stack.push(i.longValue());
+	}
+}

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

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class I2S extends Instruction
+{
+	public I2S(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Integer;
+
+		Integer i = (Integer) obj;
+		stack.push(i.shortValue());
+	}
+}

src/main/java/info/sigterm/deob/attributes/code/instructions/L2D.java

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class L2D extends Instruction
+{
+	public L2D(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Long;
+
+		Long l = (Long) obj;
+		stack.push(l.doubleValue());
+	}
+}

src/main/java/info/sigterm/deob/attributes/code/instructions/L2F.java

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class L2F extends Instruction
+{
+	public L2F(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Long;
+
+		Long l = (Long) obj;
+		stack.push(l.floatValue());
+	}
+}

src/main/java/info/sigterm/deob/attributes/code/instructions/L2I.java

@@ -0,0 +1,29 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class L2I extends Instruction
+{
+	public L2I(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Object obj = stack.pop();
+		assert obj instanceof Long;
+
+		Long l = (Long) obj;
+		stack.push(l.intValue());
+	}
+}

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

@@ -0,0 +1,33 @@
+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.Stack;
+
+import java.io.IOException;
+
+public class LCmp extends Instruction
+{
+	public LCmp(Instructions instructions, InstructionType type, int pc) throws IOException
+	{
+		super(instructions, type, pc);
+	}
+
+	@Override
+	public void execute(Frame frame)
+	{
+		Stack stack = frame.getStack();
+
+		Long one = (Long) stack.pop();
+		Long two = (Long) stack.pop();
+
+		if (one > two)
+			stack.push(1);
+		else if (one < two)
+			stack.push(-1);
+		else
+			stack.push(0);
+	}
+}

src/main/java/info/sigterm/deob/execution/ClassInstance.java

@@ -0,0 +1,54 @@
+package info.sigterm.deob.execution;
+
+import info.sigterm.deob.ClassFile;
+import info.sigterm.deob.Field;
+import info.sigterm.deob.Fields;
+import info.sigterm.deob.attributes.AttributeType;
+import info.sigterm.deob.attributes.Attributes;
+import info.sigterm.deob.attributes.ConstantValue;
+import info.sigterm.deob.pool.NameAndType;
+
+import java.util.ArrayList;
+
+public class ClassInstance
+{
+	private Path path;
+	private ClassFile clazz;
+	private ArrayList<StaticFieldInstance> fields = new ArrayList<StaticFieldInstance>();
+
+	public ClassInstance(Path path, ClassFile clazz)
+	{
+		this.path = path;
+		this.clazz = clazz;
+
+		/* initialize static fields */
+		Fields fields = clazz.getFields();
+		for (Field field : fields.getFields())
+			if ((field.getAccessFlags() & Field.ACC_STATIC) != 0)
+			{
+				Attributes attributes = field.getAttributes();
+				ConstantValue cv = (ConstantValue) attributes.findType(AttributeType.CONSTANT_VALUE);
+
+				StaticFieldInstance fi = new StaticFieldInstance(field, cv);
+				this.fields.add(fi);
+			}
+	}
+
+	public Path getPath()
+	{
+		return path;
+	}
+
+	public ClassFile getClassFile()
+	{
+		return clazz;
+	}
+
+	public StaticFieldInstance findStaticField(NameAndType nat)
+	{
+		for (StaticFieldInstance f : fields)
+				if (f.getField().getName().equals(nat.getName()) && f.getField().getDescriptor().equals(nat.getDescriptor()))
+					return f;
+		return null;
+	}
+}

src/main/java/info/sigterm/deob/execution/Frame.java

@@ -21,6 +21,11 @@ public class Frame
 		variables = new Variables(code.getMaxLocals());
 	}
 
+	public Path getPath()
+	{
+		return path;
+	}
+
 	public Stack getStack()
 	{
 		return stack;

src/main/java/info/sigterm/deob/execution/ObjectInstance.java

@@ -0,0 +1,6 @@
+package info.sigterm.deob.execution;
+
+public class ObjectInstance
+{
+	private ClassInstance type;
+}

src/main/java/info/sigterm/deob/execution/Path.java

@@ -1,10 +1,14 @@
 package info.sigterm.deob.execution;
 
+import info.sigterm.deob.ClassFile;
 import info.sigterm.deob.Method;
 
+import java.util.ArrayList;
+
 public class Path
 {
 	private Execution execution;
+	private ArrayList<ClassInstance> classes = new ArrayList<ClassInstance>();
 	private java.util.Stack<Frame> frames = new java.util.Stack<Frame>(); // current execution frames
 
 	public Path(Execution execution)
@@ -12,6 +16,28 @@ public class Path
 		this.execution = execution;
 	}
 
+	public Execution getExecution()
+	{
+		return execution;
+	}
+
+	public ClassInstance getClassInstance(ClassFile clazz)
+	{
+		for (ClassInstance cl : classes)
+			if (cl.getClassFile() == clazz)
+				return cl;
+
+		/* load parent */
+		ClassFile parent = clazz.getParent();
+		if (parent != null)
+			getClassInstance(parent);
+
+		ClassInstance cl = new ClassInstance(this, clazz);
+		classes.add(cl);
+
+		return cl;
+	}
+
 	public void init(Method method, Object[] args)
 	{
 		Frame f = new Frame(this, method);

src/main/java/info/sigterm/deob/execution/StaticFieldInstance.java

@@ -0,0 +1,26 @@
+package info.sigterm.deob.execution;
+
+import info.sigterm.deob.Field;
+import info.sigterm.deob.attributes.ConstantValue;
+
+public class StaticFieldInstance
+{
+	private Field field;
+	private ConstantValue value;
+
+	public StaticFieldInstance(Field field, ConstantValue value)
+	{
+		this.field = field;
+		this.value = value;
+	}
+
+	public Field getField()
+	{
+		return field;
+	}
+
+	public ConstantValue getValue()
+	{
+		return value;
+	}
+}

src/main/java/info/sigterm/deob/pool/Double.java

@@ -23,4 +23,10 @@ public class Double extends PoolEntry
 	{
 		return 2;
 	}
+
+	@Override
+	public Object getObject()
+	{
+		return value;
+	}
 }

src/main/java/info/sigterm/deob/pool/Float.java

@@ -17,4 +17,10 @@ public class Float extends PoolEntry
 
 		value = is.readFloat();
 	}
+
+	@Override
+	public Object getObject()
+	{
+		return value;
+	}
 }

src/main/java/info/sigterm/deob/pool/Integer.java

@@ -17,4 +17,10 @@ public class Integer extends PoolEntry
 
 		value = is.readInt();
 	}
+
+	@Override
+	public Object getObject()
+	{
+		return value;
+	}
 }

src/main/java/info/sigterm/deob/pool/Long.java

@@ -23,4 +23,10 @@ public class Long extends PoolEntry
 	{
 		return 2;
 	}
+
+	@Override
+	public Object getObject()
+	{
+		return value;
+	}
 }

src/main/java/info/sigterm/deob/pool/NameAndType.java

@@ -31,4 +31,30 @@ public class NameAndType extends PoolEntry
 		UTF8 u = (UTF8) this.getPool().getEntry(descriptorIndex);
 		return u.getValue();
 	}
+
+	public Object getStackObject()
+	{
+		java.lang.String desc = getDescriptor();
+		switch (desc)
+		{
+			case "B":
+				return (byte) 0;
+			case "C":
+				return (char) 0;
+			case "I":
+				return 0;
+			case "S":
+				return null;
+			case "Z":
+				return false;
+			case "D":
+				return 0d;
+			case "F":
+				return 0f;
+			case "L":
+				return 0L;
+			default:
+				return null;
+		}
+	}
 }

src/main/java/info/sigterm/deob/pool/PoolEntry.java

@@ -22,4 +22,9 @@ public abstract class PoolEntry
 	{
 		return 1;
 	}
+
+	public Object getObject()
+	{
+		throw new RuntimeException("No getObject implemented for " + this);
+	}
 }

src/main/java/info/sigterm/deob/pool/String.java

@@ -17,4 +17,10 @@ public class String extends PoolEntry
 
 		stringIndex = is.readUnsignedShort();
 	}
+
+	@Override
+	public Object getObject()
+	{
+		return stringIndex;
+	}
 }