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:
Jan. 28, 2014
Filed:
Feb. 14, 2011
Raul Esteban Silvera, Woodbridge, CA;
Kai-ting Amy Wang, North York, CA;
Peng Wu, Mt. Kisco, NY (US);
Mark Wayne Yamashita, Toronto, CA;
Xiaotong Zhuang, White Plains, NY (US);
Raul Esteban Silvera, Woodbridge, CA;
Kai-Ting Amy Wang, North York, CA;
Peng Wu, Mt. Kisco, NY (US);
Mark Wayne Yamashita, Toronto, CA;
Xiaotong Zhuang, White Plains, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A process for check pointing in speculative execution frameworks, identifies calls to a set of setjmp/longjmp instructions to form identified calls to setjmp/longjmp, determines a control flow path between a call to a setjmp and a longjmp pair of instructions in the identified calls to setjmp/longjmp and replaces calls to the setjmp/longjmp pair of instructions with calls to an improved_setjmp and improved_longjmp instruction pair. The process creates a context data structure in memory, computes a non-volatile save/restore set and replaces the call to improved_setjmp of the setjmp/longjmp pair of instructions with instructions to save all required non-volatile and special purpose registers and replaces a call to improved_longjmp of the setjmp/longjmp pair of instructions with instructions to restore all required non-volatile and special purpose registers and to branch to an instruction immediately following a block of code containing the call to improved_setjmp.