public void X86St_OnBeforeCall_DecrementStackRegister()
{
var arch = new X86ArchitectureFlat32("x86-protected-32");
var state = new X86State(arch);
var esp = CreateId(Registers.esp);
state.SetRegister(Registers.esp, Constant.Word32(-4));
state.OnProcedureEntered();
var site = state.OnBeforeCall(esp, 4);
Assert.AreEqual(4, site.SizeOfReturnAddressOnStack);
Assert.AreEqual("0xFFFFFFFC", state.GetValue(esp).ToString());
}