Abstract: A program processing method, in an evaluation process, analyzes a source program (PB), computes usage cost values of the resources of the computer, in units of prescribed program modules comprised by the source program, and selects a program module (M,N) for which the usage cost value is high; in an editing process, generates a hardware module object (OBm,OBn) which configures dynamically reconfigurable hardware into a configuration for processing of the selected program module; in an execution process, executes the modified source program by means of hardware configured according to the hardware module object and the computer. According to the method, the optimal program module for replacement by dynamically reconfigurable hardware is selected. Hence by replacing the selected program module with hardware, a minimal amount of dynamically reconfigurable hardware can be used to maximize the execution efficiency of the source program.