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. 24, 2020
Filed:
Apr. 26, 2018
Marvell World Trade Ltd., St. Michael, BB;
Richard Eugene Kessler, Northborough, MA (US);
Wilson P. Snyder, II, Holliston, MA (US);
Shubhendu Sekhar Mukherjee, Southborough, MA (US);
Marvell World Trade Ltd., St. Michael, BB;
Abstract
A predicted branch result is determined based on at least a portion of branch prediction information, which is updated based on an actual branch result, which is provided based on an executed branch instruction. For a first execution of a first branch instruction, the updating includes: computing a randomized value and storing the randomized value in association with an identified subset of one or more contexts that includes a context associated with the first branch instruction, obfuscating the actual branch result based at least in part on the randomized value, and storing a resulting obfuscated value in the branch prediction information. Providing a predicted branch result for a second execution of the first branch instruction includes: retrieving the obfuscated value from the branch prediction information, retrieving the randomized value, and de-obfuscating the obfuscated value using the randomized value to recover the actual branch result as the predicted branch result.