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:
Jun. 23, 1998
Filed:
Jun. 09, 1995
Andrew Augustus Bjorksten, Austin, TX (US);
Duc Quang Bui, Austin, TX (US);
Richard Edmund Fry, Round Rock, TX (US);
James Edward Phillips, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for interchanging operands and loading such operands into a plurality of operand registers in an execution unit with the data processing system during execution of a complex instruction. A plurality of operands are stored within a register file, including a first operand and a second operand. An instruction is loaded into the first stage of the execution pipe within the execution unit, wherein the instruction has a plurality of fields. Such fields include a first and second field, containing a first and second operand pointer, respectively, for designating a value stored in the register file for loading into first and second operand registers, respectively. Next, the first and second operand pointers are interchanged between the first and second fields. Finally, the first operand register is loaded with the value in the register file designated by the second operand pointer stored in the first field, and the second operand register is loaded with the value in the register file designated by the first operand pointer in the second field, wherein the values in the register file designated by operand pointers in the fields of the instruction are loaded into different operand registers than originally specified by the instruction, thereby facilitating execution of a complex instruction in the execution unit.