METHOD, SYSTEM, PROGRAM, AND DATA STRUCTURES FOR TRANSFORMING AN INSTRUCTION IN A FIRST BIT ARCHITECTURE TO AN INSTRUCTION IN A SECOND BIT ARCHITECTURE

摘要

METHOD, SYSTEM, PROGRAM, AND DATA STRUCTURES FOR TRANSFORMING AN INSTRUCTION IN A FIRST BIT ARCHITECTURE TO AN INSTRUCTION IN A SECOND BIT ARCHETECTURE ABSTRACTDisclosed is a method, system, program, and data structures for transforming an instruction in afirst bit architecture, e.g., 32 bit, to an instruction in a second bit architecture, e.g., 64 bit. Codeis transformed from an instruction in the first bit architecture having an operation code and atleast one operand. A transformation table (30) is accessed (108) including information fortransforming the instruction in the first bit architecture to the second bit architecture. Theinstruction in the first bit architecture is transformed (112, 114, 116, 118) to a correspondinginstruction in the second bit architecture if the transform table includes information indicating tomodify the instruction in the first bit architecture. The transformation is based in transformationoperations that modify the instruction in the first bit architecture to generate the instruction in thesecond bit architecture.