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@c

@c  RTEMS Remote Debugger Server Specifications

@c

@c  Written by: Eric Valette 

@c              Emmanuel Raguet 

@c

@c

@c  intro.t,v 1.2 2002/01/17 21:47:46 joel Exp

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@chapter Introduction

The TOOLS project aims to provide a complete development environment

for RTEMS OS. This environment must be as close as possible to the Chorus one

(gnu compiler, gnu linker, gnu debugger, ...), because it is currently the OS

which is the most used at CRF and we want to simplify the migration path from

the ChorusOs environment to the RTEMS environment. One important item of this

development environment is the remote debugger which allows the developer to

debug his software on a target machine from a host machine via a communication

link (Ethernet, serial link, ...).

The choice of GDB as debugger has been made with because in CRF, every

developer, which uses the ChorusOs development environment, debugs his software

using the remote debugging functionality of GDB. Providing a remote GDB debug

server running on RTEMS, will enable the developers to use transparently the

same debugger for a different RTOS. Another reason for the choice of GDB is

its constant evolution, and that it can be interfaced with graphic user interfaces

like DDD providing a very powerfull debugging environment.

The subject of this document is to explain how GDB works and the way

to implement a daemon on RTEMS that will be used as a debugger server for a

GDB client. We will call this daemon Rtems GDB Debug Server Daemon (RGDBSD).

We aim to provide this debugger running at least on 2 host systems : Linux 2.x

and Solaris 2.5.1 as they are the two platforms used for developing Chorus applications

today.