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. 16, 2010
Filed:
May. 30, 2003
Donald C. Soltis, Fort Collins, CO (US);
Dale C. Morris, Steamboat Springs, CO (US);
Dean Ahmad Mulla, Saratoga, CA (US);
Achmed Rumi Zahir, Menlo Park, CA (US);
Amy Lynn O'donnell, Ann Arbor, MI (US);
Allan Douglas Knies, San Francisco, CA (US);
Donald C. Soltis, Fort Collins, CO (US);
Dale C. Morris, Steamboat Springs, CO (US);
Dean Ahmad Mulla, Saratoga, CA (US);
Achmed Rumi Zahir, Menlo Park, CA (US);
Amy Lynn O'Donnell, Ann Arbor, MI (US);
Allan Douglas Knies, San Francisco, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Atomic sixteen-byte memory accesses are provided in a 64-bit system in which eight of the bytes are stored in a 64-bit general-purpose register and eight of the bytes are stored in a 64-bit special-purpose register. A 16-byte load instruction transfers the low eight bytes to an explicitly specified general-purpose register, while the high eight bytes are transferred to the special-purpose register. Likewise, a 16-byte store instruction transfers data from a general-purpose register and the special-purpose register. Also provided is an 8-byte compare conditioning a 16-byte exchange semaphore instruction that can be used to accelerate algorithms that use multiple processors to simultaneously read and update large databases.