Patching device for a processor

Details Patching device for a processor Patching device for a processor

2005-11-04

2010-11-30

Sough, Hyung S (Department: 2194)

Data processing: software development, installation, and managem

Software upgrading or updating

C711S102000, C711S215000, C712S226000

Reexamination Certificate

active

07844962

ABSTRACT:
A code patching device is provided for use with a processor having a read-only memory which stores instruction code and a further memory for storing patch code. A plurality of patch address registers each store an address, in the read-only memory, at which a patch is to be performed. A comparator compares the address of the read-only memory that is being accessed by the processor with the addresses stored in the registers. A control unit selects between code from the read-only memory or patch code from the further memory depending on the comparison. The code patching device can replace, on-the-fly, erroneous lines of code from the read-only memory by corrected ones. During an initialization process the patch code is loaded into the further memory and the registers are loaded with the addresses which require patching.

REFERENCES:
patent: 4542453 (1985-09-01), Patrick et al.
patent: 6260157 (2001-07-01), Schurecht et al.
patent: 6438664 (2002-08-01), McGrath et al.
patent: 2004/0163080 (2004-08-01), Menon et al.
patent: 2004/0210720 (2004-10-01), Wong et al.
IEEE Standard Glossary of Software Engineering Terminology, Dec. 10 1990, IEEE Computer Society.
A Krishnaswamy, R Gupta, Profile guided selection of ARM and thumb instructions, ACM SIGPLAN Notices, vol. 37 , Issue 7 (Jul. 2002), pp. 56-64.

Affiliated with

Also associated with

Rating

Patching device for a processor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Patching device for a processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Patching device for a processor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4250847