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:
Oct. 10, 2023
Filed:
Nov. 13, 2020
Applicant:
Centaur Technology, Inc., Austin, TX (US);
Inventor:
Thomas C. McDonald, Austin, TX (US);
Assignee:
CENTAUR TECHNOLOGY, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/54 (2013.01); G06F 21/57 (2013.01); G06F 16/22 (2019.01); G06F 9/38 (2018.01); G06Q 30/018 (2023.01);
U.S. Cl.
CPC ...
G06F 21/577 (2013.01); G06F 9/3804 (2013.01); G06F 9/3844 (2013.01); G06F 9/3861 (2013.01); G06F 16/2282 (2019.01); G06F 21/54 (2013.01); G06F 2221/034 (2013.01); G06Q 30/0185 (2013.01);
Abstract
In one embodiment, a method implemented in a microprocessor, including receiving a fetched branch instruction; performing a privilege level test on a fetched branch instruction using a privilege level indicated by a first tag corresponding to a privilege level in a branch prediction table comprising plural entries, each of the plural entries comprising a tag corresponding to a privilege level; and providing a prediction branch miss for the fetched branch instruction based on a failure of the privilege level test.