public MachineState(MachineState copyMe)
{
instructionPointer = copyMe.instructionPointer;
registers = new RegisterCollection(copyMe.registers);
dataSegment = new Dictionary<UInt32, AbstractValue>(copyMe.dataSegment);
zeroFlag = copyMe.zeroFlag;
}
private static RegisterCollection createRegistersForLinuxStart()
{
var linuxMainDefaultValues = new RegisterCollection();
var arg0 = new AbstractValue(1).AddTaint();
var argvBuffer = new[] { arg0 };
var argvPointer = new AbstractValue(argvBuffer);
var argvPointerBuffer = new[] { argvPointer };
var argvPointerPointer = new AbstractValue(argvPointerBuffer);
var stackBuffer = AbstractValue.GetNewBuffer(0x200);
var buffer = new AbstractBuffer(stackBuffer);
var modifiedBuffer = buffer.DoOperation(OperatorEffect.Add, new AbstractValue(0x100));
// linux ABI dictates
modifiedBuffer[5] = argvPointerPointer;
// gcc generates code that accesses this at some optimization levels
modifiedBuffer[0xfc] = new AbstractValue(1);
var stackPointer = new AbstractValue(modifiedBuffer);
linuxMainDefaultValues[RegisterName.ESP] = stackPointer;
return(linuxMainDefaultValues);
}
public MachineState(RegisterCollection registers)
{
dataSegment = new Dictionary<UInt32, AbstractValue>();
this.registers = registers;
instructionPointer = 0x00;
zeroFlag = false;
}
public void SetUp()
{
var registers = new RegisterCollection();
registers[RegisterName.ESP] = new AbstractValue(AbstractValue.GetNewBuffer(1));
state = new MachineState(registers);
contract = new GLibcStartMainContract();
}
public MachineState(RegisterCollection registers)
{
dataSegment = new Dictionary <UInt32, AbstractValue>();
this.registers = registers;
instructionPointer = 0x00;
zeroFlag = false;
}
public MachineState(MachineState copyMe)
{
instructionPointer = copyMe.instructionPointer;
registers = new RegisterCollection(copyMe.registers);
dataSegment = new Dictionary <UInt32, AbstractValue>(copyMe.dataSegment);
zeroFlag = copyMe.zeroFlag;
}
public void SetUp()
{
var registers = new RegisterCollection();
registers[RegisterName.ESP] = new AbstractValue(AbstractValue.GetNewBuffer(1));
state = new MachineState(registers);
contract = new GLibcStartMainContract();
}
public RegisterCollection(RegisterCollection _copyMe)
{
registers = new AbstractValue[8];
for (UInt32 i = 0; i < registers.Length; ++i)
{
registers[i] = new AbstractValue(_copyMe.registers[i]);
}
}
public RegisterCollection(RegisterCollection _copyMe)
{
registers = new AbstractValue[8];
for (UInt32 i = 0; i < registers.Length; ++i)
{
registers[i] = new AbstractValue(_copyMe.registers[i]);
}
}
public void InitialRegisters()
{
var registers = new RegisterCollection();
registers[RegisterName.EAX] = one;
state = new MachineState(registers);
var newState = X86Emulator.Run(reportItems, state, new byte[] { 0x90 });
Assert.AreEqual(one, newState.Registers[RegisterName.EAX]);
Assert.AreNotSame(state, newState);
Assert.AreNotEqual(state, newState);
}
public void Copy()
{
registers[RegisterName.ESP] = new AbstractValue(new AbstractBuffer(AbstractValue.GetNewBuffer(10)));
var newRegisters = new RegisterCollection(registers);
for (UInt32 i = 0; i < 7; i++)
{
var register = (RegisterName)i;
Assert.AreNotSame(newRegisters[register], registers[register]);
}
Assert.AreNotSame(newRegisters[RegisterName.ESP].PointsTo, registers[RegisterName.ESP].PointsTo);
}
public void Copy()
{
registers[RegisterName.ESP] = new AbstractValue(new AbstractBuffer(AbstractValue.GetNewBuffer(10)));
var newRegisters = new RegisterCollection(registers);
for (UInt32 i = 0; i < 7; i++)
{
var register = (RegisterName)i;
Assert.AreNotSame(newRegisters[register], registers[register]);
}
Assert.AreNotSame(newRegisters[RegisterName.ESP].PointsTo, registers[RegisterName.ESP].PointsTo);
}
public void Equality()
{
var same = new MachineState(new RegisterCollection());
same.DataSegment[0] = new AbstractValue(2);
var same2 = new MachineState(new RegisterCollection());
same2.DataSegment[0] = new AbstractValue(2);
var registers = new RegisterCollection();
registers[RegisterName.EAX] = new AbstractValue(1);
var differentViaRegisters = new MachineState(registers);
differentViaRegisters.DataSegment[0] = new AbstractValue(2);
Assert.IsTrue(same.Equals(same2));
Assert.IsFalse(differentViaRegisters.Equals(same));
Assert.IsTrue(same == same2);
Assert.IsTrue(same != differentViaRegisters);
Assert.AreEqual(same.GetHashCode(), same2.GetHashCode());
Assert.AreNotEqual(same.GetHashCode(), differentViaRegisters.GetHashCode());
registers = new RegisterCollection();
var differentViaDataSegmentKey = new MachineState(registers);
differentViaDataSegmentKey.DataSegment[1] = new AbstractValue(2);
Assert.IsFalse(same.Equals(differentViaDataSegmentKey));
registers = new RegisterCollection();
var differentViaDataSegmentValue = new MachineState(registers);
differentViaDataSegmentValue.DataSegment[0] = new AbstractValue(1);
Assert.IsFalse(same.Equals(differentViaDataSegmentValue));
}
public void SetUp()
{
registers = new RegisterCollection();
}
public void SetUp()
{
registers = new RegisterCollection();
}
public void Equality()
{
var same = new MachineState(new RegisterCollection());
same.DataSegment[0] = new AbstractValue(2);
var same2 = new MachineState(new RegisterCollection());
same2.DataSegment[0] = new AbstractValue(2);
var registers = new RegisterCollection();
registers[RegisterName.EAX] = new AbstractValue(1);
var differentViaRegisters = new MachineState(registers);
differentViaRegisters.DataSegment[0] = new AbstractValue(2);
Assert.IsTrue(same.Equals(same2));
Assert.IsFalse(differentViaRegisters.Equals(same));
Assert.IsTrue(same == same2);
Assert.IsTrue(same != differentViaRegisters);
Assert.AreEqual(same.GetHashCode(), same2.GetHashCode());
Assert.AreNotEqual(same.GetHashCode(), differentViaRegisters.GetHashCode());
registers = new RegisterCollection();
var differentViaDataSegmentKey = new MachineState(registers);
differentViaDataSegmentKey.DataSegment[1] = new AbstractValue(2);
Assert.IsFalse(same.Equals(differentViaDataSegmentKey));
registers = new RegisterCollection();
var differentViaDataSegmentValue = new MachineState(registers);
differentViaDataSegmentValue.DataSegment[0] = new AbstractValue(1);
Assert.IsFalse(same.Equals(differentViaDataSegmentValue));
}
public void InitialRegisters()
{
var registers = new RegisterCollection();
registers[RegisterName.EAX] = one;
state = new MachineState(registers);
var newState = X86Emulator.Run(reportItems, state, new byte[] {0x90});
Assert.AreEqual(one, newState.Registers[RegisterName.EAX]);
Assert.AreNotSame(state, newState);
Assert.AreNotEqual(state, newState);
}
