Data processing system featuring subroutine linkage...

Details Data processing system featuring subroutine linkage... Data processing system featuring subroutine linkage...

G - Physics

06

F

354/230.81

G06F 9/40 (2006.01) G06F 9/42 (2006.01)

Patent

CA 1089105

DATA PROCESSING SYSTEM FEATURING SUBROUTINE LINKAGE OPERATIONS USING HARDWARE CONTROLLED STACKS Abstract A data processing system is described wherein, during linkage to a subroutine, by a single machine instruction, a complete status save and the assignment of a dynamic work area are effected. By another single machine instruc- tion the process is reversed. The elements of the complete machine status and the dynamic work area are retained in a hardware controlled stack, thus permitting nesting of the subroutine calls.

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