METHOD AND PROCESSOR FOR DYNAMICALLY CHANGING SEMANTIC OF INSTRUCTION BASED ON PROGRAMMABLE INFORMATION

摘要

PURPOSE: A method and a processor for dynamically changing semantic of an instruction based on programmable information are provided to monitor a code determining a performance related to the instruction or change of instruction operation based on the programmable information separated from the instruction. CONSTITUTION: The processor includes an instruction fetch logic(154) searching the instruction from a memory, a decode logic(152) connected to the instruction fetch logic, and a vector table accessible to the decode logic and including multiple entries. Each entry is equipped with a configuration bit corresponding/related to the instruction. The configuration bit specifies whether the related instruction is replaced with other instruction sequence. The entry of the configuration bit specifying replacement of the related instruction includes a pointer for other instruction sequence.