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:
Dec. 17, 2013
Filed:
Dec. 17, 2007
Garth D. Hillman, Lakeway, TX (US);
Geoffrey Strongin, Austin, TX (US);
Andrew R. Rawson, Austin, TX (US);
Gary H. Simpson, Framingham, MA (US);
Ralf Findeisen, Dresden, DE;
Garth D. Hillman, Lakeway, TX (US);
Geoffrey Strongin, Austin, TX (US);
Andrew R. Rawson, Austin, TX (US);
Gary H. Simpson, Framingham, MA (US);
Ralf Findeisen, Dresden, DE;
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
In one embodiment, a processor comprises a programmable map and a circuit. The programmable map is configured to store data that identifies at least one instruction for which an architectural modification of an instruction set architecture implemented by the processor has been defined, wherein the processor does not implement the modification. The circuitry is configured to detect the instruction or its memory operands and cause a transition to Known Good Code (KGC), wherein the KGC is protected from unauthorized modification and is provided from an authenticated entity. The KGC comprises code that, when executed, emulates the modification. In another embodiment, an integrated circuit comprises at least one processor core; at least one other circuit; and a KGC source configured to supply KGC to the processor core for execution. The KGC comprises interface code for the other circuit whereby an application executing on the processor core interfaces to the other circuit through the KGC.