Computer system, adress redirection method and system function monitoring method for thereof

The present invention, a system function monitoring method is disclosed in a computer system, and how the address of the mobile computer system and a computer system. Embodiments of the present invention when the number of bits corresponding to the full range of addresses of a memory device that is having the memory access module that supports a memory area of ​​the number less bits than the OS environment approach, the (defined) access of the entire address range of the memory device stores the address moving function for moving to the remaining address ranges can not be accessed (specified) in the part of the address range as possible by, and can effectively use the entire address range of the memory device, which was based on the realization of the system function monitoring 64bit OS environment in 32bit OS this becomes possible in kernel mode hooks as is for a technology that can provide the same level of security with 32bit OS.