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. 25, 2025
Filed:
Mar. 01, 2023
Applicant:
Sifive, Inc., San Mateo, CA (US);
Inventor:
Josh Smith, San Francisco, CA (US);
Assignee:
SiFive, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/30 (2018.01); G06F 9/38 (2018.01);
U.S. Cl.
CPC ...
G06F 9/30101 (2013.01); G06F 9/30145 (2013.01); G06F 9/384 (2013.01); G06F 9/3856 (2023.08);
Abstract
A method for renaming architectural register, such as control and status register (CSR), is disclosed. The method includes decoding an instruction for updating CSR, updating the CSR based on a respective instruction of the one or more instructions, allocating a unique tag to the instruction in pipeline, and writing the tag into a mapping table for renaming the CSR. The tag can identify the CSR included in the instruction or the updated values of the CSR. The tag can be associated with a unique value. Moreover, the method can employ a First In, First Out (FIFO) queuing technique and virtual bits.