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Apparatus and method for floating-point exception prediction and recovery
 
   
Document Number
US Patent 7373489
Issued Date
May 13, 2008
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Abstract
An apparatus and method for floating point exception prediction and recovery. In one embodiment, a processor may include instruction fetch logic configured to issue a first instruction from one of a plurality of threads and to successively issue a second instruction from another one of the plurality of threads. The processor may also include floating-point arithmetic logic configured to execute a floating-point instruction issued by the instruction fetch logic from a given one of the plurality of threads, and further configured to determine whether the floating-point instruction generates an exception, and may further include exception prediction logic configured to predict whether the floating-point instruction will generate the exception, where the prediction occurs before the floating-point arithmetic logic determines whether the floating-point instruction generates the exception.
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Number of Claims:
24
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Owner
Sun Microsystems, Inc. (Santa Clara, CA)
Published
May 13, 2008
Application Number
10/880,713
Filed
June 30, 2004
US Classification
712/244   708/495 708/498 712/222
Int'l Classification
G06F   9/00   (20060101)   G06F   7/38   (20060101)   G06F   9/44   (20060101)  
Examiner
Assistant Examiner
USPTO Field of Search
712/244   712/222   708/498   708/495  
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