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. 02, 2005
Filed:
Jun. 19, 2001
Matthew H. Reilly, Stow, MA (US);
Matthew C. Mattina, Hudson, MA (US);
Shane L. Bell, Shrewsbury, MA (US);
Chuan-hua Chang, Natick, MA (US);
Matthew H. Reilly, Stow, MA (US);
Matthew C. Mattina, Hudson, MA (US);
Shane L. Bell, Shrewsbury, MA (US);
Chuan-Hua Chang, Natick, MA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
An exception handler for a processor is split into two functional units to permit exceptions to be classified into two categories. The first category of exceptions includes performance critical excepted instructions, while the second category includes non-performance critical excepted instructions. The performance critical exceptions are routed to a speculative exception handler, which resolves the exceptions speculatively, even though the excepted instruction may lie in a speculative path of the program flow. The non-performance critical exceptions are routed to a non-speculative exception handler that only resolves exceptions when the excepted instruction is certain to execute in an actual path of the program flow.