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:
Dec. 19, 2000
Filed:
Nov. 26, 1997
George Z Chrysos, Marlborough, MA (US);
Jeffrey Dean, Menlo Park, CA (US);
James E Hicks, Newton, MA (US);
Daniel L Leibholz, Cambridge, MA (US);
Edward J McLellan, Holliston, MA (US);
Carl A Waldspurger, Atherton, CA (US);
William E Weihl, San Francisco, CA (US);
Compaq Computer Corporation, Houston, TX (US);
Abstract
An apparatus is provided for sampling multiple concurretly executing instructions in a processor pipeline of a system. The pipeline has a plurality of processing stages. The apparatus identifies multiple selected when the instructions are fetched into a first stage of the pipeline. A subset of the the multiple selected instructions to execute concurrently in the pipeline. State information of the system is sampled while any of the multiple selected instructions are in any stage of the pipeline. Software is informed whenever all of the selected instructions leave the pipeline so that the software can read any of the state information.