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:
Oct. 16, 2012
Filed:
Dec. 22, 2008
Applicants:
Shogo Ishii, Tokyo, JP;
Koji Yura, Tokyo, JP;
Inventors:
Shogo Ishii, Tokyo, JP;
Koji Yura, Tokyo, JP;
Assignee:
Toshiba Solutions Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/455 (2006.01);
U.S. Cl.
CPC ...
Abstract
A virtualization program for being able to execute a simulation at high speed, allows a native code simulator to have a stack specific to each task that is managed by a multitask OS. Processes of creation, save, restoration and erasure of a context that a target CPU executes by means of a special control register operation is executed by an API provided by the native code simulator. When porting the multitask OS, the source code is altered so as to call the API. A stack specific to a task is assigned at the API and the stack is switched for switching the task to make context switching possible.