private void Translate_Not(CflowStack stack, Instruction instr)
{
var val1 = stack.Pop();
if (val1 is BitVecExpr)
{
stack.Push(ctx.MkBVNot(val1 as BitVecExpr));
}
else
{
stack.PushUnknown();
}
}
private void Translate_Ldind_I4(CflowStack stack, Instruction instr)
{
var addr = stack.Pop();
if (addr is Address && (addr as Address).Value is BitVecExpr)
{
stack.Push((addr as Address).Value);
}
else
{
stack.PushUnknown();
}
}
private void Translate_Clt_Un(CflowStack stack, Instruction instr)
{
var val2 = stack.Pop();
var val1 = stack.Pop();
if (val1 is BitVecExpr && (val1 as BitVecExpr).Simplify().IsNumeral&& val2 is BitVecExpr && (val2 as BitVecExpr).Simplify().IsNumeral)
{
stack.Push((BitVecExpr)ctx.MkITE(ctx.MkBVULT(val1 as BitVecExpr, val2 as BitVecExpr), ctx.MkBV(1, 32), ctx.MkBV(0, 32)));
}
else
{
stack.PushUnknown();
}
}
private void Translate_Shr_Un(CflowStack stack, Instruction instr)
{
var val2 = stack.Pop();
var val1 = stack.Pop();
if (val1 is BitVecExpr && val2 is BitVecExpr)
{
stack.Push(ctx.MkBVLSHR(val1 as BitVecExpr, val2 as BitVecExpr));
}
else
{
stack.PushUnknown();
}
}
private void Translate_Mul_Ovf_Un(CflowStack stack, Instruction instr)
{
var val2 = stack.Pop();
var val1 = stack.Pop();
if (val1 is BitVecExpr && val2 is BitVecExpr)
{
stack.Push((BitVecExpr)ctx.MkITE(ctx.MkBVMulNoOverflow(val1 as BitVecExpr, val2 as BitVecExpr, false), ctx.MkBVMul(val1 as BitVecExpr, val2 as BitVecExpr), stack.Unknown() as BitVecExpr));
}
else
{
stack.PushUnknown();
}
}
private void Translate_Sub_Ovf(CflowStack stack, Instruction instr)
{
var val2 = stack.Pop();
var val1 = stack.Pop();
if (val1 is BitVecExpr && val2 is BitVecExpr)
{
stack.Push((BitVecExpr)ctx.MkITE(ctx.MkBVSubNoUnderflow(val1 as BitVecExpr, val2 as BitVecExpr, true), ctx.MkBVSub(val1 as BitVecExpr, val2 as BitVecExpr), stack.Unknown() as BitVecExpr));
}
else
{
stack.PushUnknown();
}
}
private void Translate_Ldlen(CflowStack stack, Instruction instr)
{
var val = stack.Pop();
if (val is IField)
{
if ((val as IField).FullName == "System.Type[] System.Type::EmptyTypes")
{
stack.Push(ctx.MkBV(0, 32));
return;
}
}
stack.PushUnknown();
}
private void UpdateStack(CflowStack stack, Instruction instr)
{
int pushes, pops;
instr.CalculateStackUsage(out pushes, out pops);
if (pops == -1)
{
stack.Clear();
}
else
{
stack.Pop(pops);
stack.Push(pushes);
}
}
private void Translate_Ldloca(CflowStack stack, List <BitVecExpr> locals, Local local)
{
stack.Push(new Address(GetLocal(stack, locals, local)));
SetLocal(locals, local == null ? -1 : local.Index, GetUnknownLocal(stack));
}
private void Translate_Sizeof(CflowStack stack, Instruction instr)
{
if (instr.Operand is TypeRef)
{
if ((instr.Operand as TypeRef).FullName == "System.Boolean")
{
stack.Push(ctx.MkBV(sizeof(System.Boolean), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Byte")
{
stack.Push(ctx.MkBV(sizeof(System.Byte), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.SByte")
{
stack.Push(ctx.MkBV(sizeof(System.SByte), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Char")
{
stack.Push(ctx.MkBV(sizeof(System.Char), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Int16")
{
stack.Push(ctx.MkBV(sizeof(System.Int16), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Int32")
{
stack.Push(ctx.MkBV(sizeof(System.Int32), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Int64")
{
stack.Push(ctx.MkBV(sizeof(System.Int64), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.UInt16")
{
stack.Push(ctx.MkBV(sizeof(System.UInt16), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.UInt32")
{
stack.Push(ctx.MkBV(sizeof(System.UInt32), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.UInt64")
{
stack.Push(ctx.MkBV(sizeof(System.UInt64), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Single")
{
stack.Push(ctx.MkBV(sizeof(System.Single), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Double")
{
stack.Push(ctx.MkBV(sizeof(System.Double), 32));
return;
}
else if ((instr.Operand as TypeRef).FullName == "System.Guid")
{
stack.Push(ctx.MkBV(0x10, 32));
return;
}
}
stack.PushUnknown();
}
private void Translate_Ldsfld(CflowStack stack, Instruction instr)
{
stack.Push(instr.Operand as IField);
}
