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. 16, 2011
Filed:
Sep. 27, 2007
Alexander B. Brown, Sheffield, GB;
Alexander B. Brown, Sheffield, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A target computing systemis adapted to support a register window architecture, particularly for use when converting non-native subject codeinstead into target codeexecuted by a target processor. A subject register stack data structure (an 'SR stack')in memory has a plurality of frameseach containing a set of entriescorresponding to a subset of subject registersof one register windowin a subject processor. The SR stackis accessed by the target codeexecuting on the target processor. The SR stackstores a large plurality of such framesand thereby avoids overhead such as modelling automatic spill and fill operations from the windowed register file of the subject architecture. In one embodiment, a target computing systemhaving sixteen general purpose working registers is adapted to support a register window architecture reliant upon a register file containing tens or hundreds of subject registers