高性能BWDSP处理器指令代码压缩技术研究  

Research of instruction code compression based on high-performance BWDSP processor

作　　者：洪兴勇[1] 洪一[1,2] 李文谨[3] 江志雄[1] 

机构地区：[1]中国电子科技集团公司第38所,安徽合肥230031 [2]合肥工业大学计算机与信息学院,安徽合肥230009 [3]安徽新华学院电子通信工程学院,安徽合肥230088

出　　处：《电子技术应用》2013年第10期8-10,14,共4页Application of Electronic Technique

基　　金：核高基重大专项(2009ZX01034-001-001-002)

摘　　要：DSP处理器的功能日益强大,软件程序的复杂程度也在不断增大,软件的代码量迅速增加。采用LZW字典压缩对由源程序指令代码经过编译、汇编后生成的二进制机器代码进行压缩,可减少指令代码存储空间大小,这样在BWDSP处理器存储空间有限的条件下可以存储更多指令程序代码,同时增加Cache命中率,提高BWDSP处理整体性能。BWDSP处理器指令Cache代码压缩系统以指令Cache块为压缩单元。在高性能BWDSP处理器平台上对典型雷达信号程序代码压缩进行仿真实验,得出平均代码压缩率为60%左右。The DSP processor is becoming more and more powerful,and the software program complexity is also increasing and software code volume increases rapidly.The binary machine instruction codes which are generated by the compiler and assembler are compressed by LZW compression technique.The code compression can reduce instruction code storage space size,so that the DSP processor with limited storage space can store more instruction code,while increasing the Cache hit rate and improving the overall performance of the BWDSP processing.The code compression system of the digital signal processor （BWDSP） uses the LZW dictionary compression algorithm to compress each instruction cache line.The experiments on the high performance BWDSP simulator show that the code compression system of BWDSP can achieve average compression ratio 60％ on typical radar signal processing programs.

关 键 词：代码压缩 BWDSP 指令CACHE LZW 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]