Method and system for compressing reduced instruction set computer (RISC) executable code through instruction set expansion

Research output: Patent

Abstract

A compression scheme is disclosed for program executables that run on Reduced Instruction Set Computer (RISC) processors, such as the PowerPC architecture. The RISC instruction set is expanded by adding opcodes to produce code that facilitates the removal of redundant fields. To compress a program, a compressor engine rewrites the executable using the new expanded instruction set. Next, a filter is applied to remove the redundant fields from the expanded instructions. A conventional compression technique such as Huffman encoding is then applied on the resulting code.

Original languageEnglish (US)
Patent numberUS6195743
IPCG06F 9/ 318 A I
Priority date01/29/99
StatePublished - Feb 27 2001
Externally publishedYes

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