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:
Nov. 05, 1996
Filed:
Jan. 27, 1995
Larry B Weber, Palo Alto, CA (US);
Earl A Killian, Los Altos, CA (US);
Mark I Himelstein, San Jose, CA (US);
Silicon Graphics, Inc., Mountain View, CA (US);
Abstract
A method and computer program-product for converting a program designed to be executed on a computer system employing a first predefined memory order, such as the Big Endian architecture, to a program which is executable on a computer system employing a second predefined memory order, such as the Little Endian architecture. The method and computer program-product uses the fact that performing a logical operation on the lower two bits of a byte address in one architecture converts that byte address to the equivalent byte address in the other architecture. The method and computer program-product are implemented in software by scanning the instructions of the input for load and store instructions. The software modifies the instructions by taking the contents of the register and operating on the two least significant bits of the byte address with a logical operation to generate two complementary bits used to replace the two least significant bits of the byte address to generate a new byte address that corresponds with the other architecture.