Call instruction for ring crossing architecture

Details Call instruction for ring crossing architecture Call instruction for ring crossing architecture

G - Physics

06

F

354/243

G06F 12/14 (2006.01) G06F 9/46 (2006.01)

Patent

CA 1260622

ABSTRACT In combination with a multiprocessing/multiprogramming computer system having a ring protection mechanism for protecting computer programs from unauthorized access, a new call instruction architecture implemented partly in firmware and partly in hardware is disclosed. Also included in the invention is a new stack mechanism for storing hardware managed control information in a control frame and software controlled data in a data frame.

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