Device predicting a branch of an instruction equivalent to a...

Details Device predicting a branch of an instruction equivalent to a... Device predicting a branch of an instruction equivalent to a...

2005-05-24

2005-05-24

Gaffin, Jeffrey (Department: 2182)

Electrical computers and digital processing systems: processing

Processing control

Branching

C712S223000, C712S234000, C712S242000

Reexamination Certificate

active

06898698

ABSTRACT:
A register number of a link register, which is specified by an instruction equivalent to a subroutine call, is registered. The number of a branch destination register in a branch instruction which can possibly be an instruction equivalent to a subroutine return is compared with the registered register number. If they match, this branch instruction is identified as an instruction equivalent to a subroutine return.

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patent: 57-86952 (1982-05-01), None
patent: 8-212075 (1996-08-01), None
patent: 8-292887 (1996-11-01), None
Losq, J, “Subroutine Return Address Stack”, Dec. 1981, IBM Technical Disclosure Bulletin, vol. 24, Issue 7A, pp. 3255-3258.*
IBM ESA/390 Principles of Operation, pp. 7-14-7-17.

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