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. 13, 2012
Filed:
Jan. 31, 2007
Ulfar Erlingsson, San Francisco, CA (US);
Martin Abadi, Palo Alto, CA (US);
Mihai-dan Budiu, Sunnyvale, CA (US);
Ulfar Erlingsson, San Francisco, CA (US);
Martin Abadi, Palo Alto, CA (US);
Mihai-Dan Budiu, Sunnyvale, CA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Instruction set architecture (ISA) extension support is described for control-flow integrity (CFI) and for XFI memory protection. ISA replaces CFI guard code with single instructions. ISA support is provided for XFI in the form of bounds-check instructions. Compared to software guards, hardware support for CFI and XFI increases the efficiency and simplicity of enforcement. In addition, the semantics for CFI instructions allows more precise static control-flow graph encodings than were possible with a prior software CFI implementation.