A method for preventing malicious software from execution within a computer system is disclosed. Before any actual execution of an application program on a computer system, the application program needs to be cross-compiled to yield a set of cross-compiled code of the application program. The set of cross-compiled code of the application program can then be executed in an execution module that is capable of recognizing and translating the set of cross-compiled code of the application program to the actual machine code of the processor.