APPARATUS AND METHOD FOR PERFORMING A PLURALITY OF PROGRAM SEGMENTS WITH DIFFERENT OBJECT CODE TYPES IN ONE PROGRAM OR ONE PROCESSOR ENVIRONMENT

摘要

PROBLEM TO BE SOLVED: To provide a method and its device for calling a program procedure, and switching performances of a plurality of object code types having various restrictions for a stack operation.;SOLUTION: A computer system includes a routine describer, a stack switch frame, a mode switching mechanism for switching a code or call restriction type from a first processor to a second processor and a means for performing instructions of various code types. The routine describer describes a program, or a code segment, the code type and the call restriction. In encountering the instructions, control is transferred to the mode switching mechanism. When a routine calls the routine including another stack model, the mode switching mechanism uses the stack switch frame in order to provide transfer between the two stack types.;COPYRIGHT: (C)2005,JPO&NCIPI