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. 01, 2005
Filed:
Oct. 05, 2001
Dan Tormey, Richardson, TX (US);
Joe Bolding, Allen, TX (US);
Bjorn Helgaas, Windsor, CO (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A system and method for setting and executing breakpoints utilized for debugging program code. A user interface (UI) stores breakpoint addresses in a breakpoint table within a central processing unit (CPU). Multiple breakpoint addresses may be stored in the table as a range of addresses in a single entry. A flag indicates whether each stored address or address range is a physical or virtual address. When executing the program code on the CPU, an instruction core requests from an instruction cache, an instruction associated with a particular address. The cache first determines from the breakpoint table within the CPU whether there is a breakpoint associated with the particular address. If so, the cache returns control to the UI. Otherwise, the cache goes out to a coherency controller to fetch the instruction from memory.