Method of implementing a relocated compiled library program with an interpreter to control a manufacturing line

Method of executing a relocated compiled library program with an interpreter to control a manufacturing line which comprises memory means in which a user memory area is set for storing a middle word of an interpreter type language program, and processor means for executing, separately, said compiled library program stored in a library area of said user memory area and said middle word of said interpreter type language program;

• wherein said method comprises the steps of:
• A) in said library area in which said complied library program is stored, creating:
• a) an adapter area set at a top of said library area, said adapter area storing adapter programs for stacking arguments of said interpreter type language program and for calling main functions in said compiled library program,
• b) a data area set at a rear of said library area, said data area storing initial data of static variables to be used in execution of said main functions in said compiled library program, and
• c) an address converting table set at a bottom of said library area, said address converting table respectively storing each of a plurality of relative addresses (X) and (y) as a pair, wherein each said relative address (X) comprises an address relative from a top address of said compiled library program to one of a plurality of position dependent code addresses, and each said relative address (Y) comprises an address relative from said top address of said compiled library program to one of a plurality of branch destination addresses indicated by said one of said plurality dependent code addresses;
• B) after loading said compiled library program in said library area, performing the following steps:
• a) changing said interpreter type language program, said changing resulting in a shift position of said library area, and
• b) changing each of said plurality of relative addresses (X) and (Y) in said address converting table as a result of said changing;
• C) when said interpreter starts and said interpreter type language program is executed, performing the following steps:
• a) copying said initial data in said data area into the main functions in said complied library program,
• b) changing the plurality of branch destination addresses using said changed relative addresses (X) and (Y) in said address converting table,
• c) calling said compiled library program as a subroutine,
• d) executing said adapter programs to stack the arguments of said interpreter type language program and call the main functions in said compiled library program, and
• e) executing said main functions in said compiled library program using said stacked arguments.