Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design of On-Chip Debugging System using GNU debugger

GNU 디버거를 이용한 온칩 디버깅 시스템 설계

  • Park, Hyung-Bae (Dept. of Electronics Engineering, Pusan National University) ;
  • Ji, Jeong-Hoon (Dept. of Computer Engineering, Pusan National University) ;
  • Xu, Jingzhe (Dept. of Electronics Engineering, Pusan National University) ;
  • Woo, Gyun (Dept. of Computer Engineering, Pusan National University) ;
  • Park, Ju-Sung (Dept. of Electronics Engineering, Pusan National University)
  • 박형배 (부산대학교 전자공학과) ;
  • 지정훈 (부산대학교 컴퓨터공학과) ;
  • 허경철 (부산대학교 전자공학과) ;
  • 우균 (부산대학교 컴퓨터공학과) ;
  • 박주성 (부산대학교 전자공학과)
  • Published : 2009.01.25
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Abstract

In this paper, we implement processor debugger based on OCD(On-Chip Debugger). Implemented debugger consist of software debugger that supports a functionality of symbolic debugging, OCD integrated into target processor as a function of debugging, and Interface & Control block which interfaces software debugger and OCD at high speed rates. The debugger supports c/assembly level debugging using software debugger as OCD is integrated into target processor. After OCD block is interfaced with 32bit RISC processor core and then implemented with FPGA, the verification of On-Chip Debugging System is carried out through connecting OCD and Interface & Control block, and SW debugger.

본 논문에서는 OCD(On-Chip Debugger)기반의 프로세서 디버거 구현한 것에 대해서 소개한다. 구현한 디버거는 프로세서 칩 내부에 내장에 내장해서 디버깅 기능을 하는 OCD로직과 심볼릭(Symbolic) 디버깅 기능을 지원하는 GNU 디버거 기반의 소프트웨어 디버거, 그리고 소프트웨어 디버거와 OCD를 연결해주고 고속 디버깅을 지원하는 인터페이스 & 컨트롤(Interface & Control) 블록으로 3개의 기능 블록으로 구성되어 있다. 디버거는 대상 프로세서에 OCD블록을 내장하여 소프트웨어 디버거를 이용해서 C/Assembly 레벨에서 디버깅이 가능하다. 디버깅 시스템(On-Chip Debugging System)은 FPGA로 구현된 32비트 RISC 타입 프로세서 코어에 OCD 블록을 내장해서 소프트웨어 디버거와 인터페이스 & 컨트롤 블록을 연동하여 동작을 검증하였다.

Keywords

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