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:
Aug. 24, 1999
Filed:
Jun. 25, 1997
Ramesh Panwar, Santa Clara, CA (US);
Dani Y Dakhil, Los Altos, CA (US);
Sun Microsystems, Inc., Palo Alto, CA (US);
Abstract
In a processor speculatively executing instructions which specify logical addresses, a method and apparatus for speculatively converting logical addresses to physical addresses. The processor has a register window movable within a register file, a window pointer register maintaining a value corresponding to the location of the window in the register file, a speculative window pointer register maintaining a speculative value of the window pointer register. A controller identifies an instruction expected to modify the value in the window pointer register, and in response to identifying the instruction the controller modifies the speculative value. A mapper, coupled to the speculative window pointer register, converts the instruction specified logical addresses to physical addresses based on the speculative value contained in the speculative window pointer register.