The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2000
Filed:
Jun. 23, 1997
Applicant:
Inventors:
Gary Lauterbach, Los Altos Hills, CA (US);
Kit Tam, Belmont, CA (US);
Assignee:
Sun Microsystems, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395580 ;
Abstract
A technique for eliminating the performance penalty of implementing jump instructions in a deeply pipelined processor includes a pipeline having a signal for indicating that the top of the address return stack has been updated by an address moved to the return register. An instruction moving a previously computed jump target address to the return register is included in code to be executed. The pipeline uses the instruction at the top of the RAS as a guess of the target instruction of a fetched jump instruction and immediately begins fetching instructions indicated by the guess.