Remote Debugging

Peter Dufault dufault at
Fri May 15 12:40:26 UTC 2015

> On May 14, 2015, at 22:44 , Chris Johns <chrisj at> wrote:
> On 15/05/2015 1:24 am, Wu, Mark H. wrote:
>> I'm evaluating RTEMS for use on a project I'm working on, and have several questions. I'll probably use 4.11, but since the documentation is only available for 4.10, I'll ask regarding the documentation.
>> The target platform we plan to use is x86. I've built RTEMS with --enable-rdbg, but the resulting target.cfg and bsp.cfg in
>> $(exec_prefix)/$(RTEMS_BSP)/make/bsp.cfg
>> Show 
>> RTEMS_HAS_RDBG = no (target.cfg)
>> HAS_RDBG = no (bsp.cfg)
>> Is there no rdbg support in the x86 platform?
> I cannot see any support in the 4.11 sources. The code use to be part of
> Till's pages he supported outside of the RTEMS project. I am not across
> the current state of that code.

I have Till's code working for the MPC5554, it needed a fair amount of changes.  I hope around June I’ll have some time to get it added, in the meantime if someone is interested in that I can send it.  It’s specific for the PowerPC.

>> I've also been looking for documentation on how to use and configure rdbg (and the server needed for it), and I haven't had much luck. The RTEMS/GDB User's Guide isn't in the documentation as of version 4.8, so I don't know if it's still valid. I'm also specifically looking for debugging over Ethernet.
>> Any help or pointers would be appreciated!
> Personally I have been using a serial port and I mean a real RS232 DB9
> port on an old Dell box to debug on x86. I have not done any work on x86
> for a while.
> I had the PXE loader load a networked grub build I made and that loaded
> the kernel over the network and it breaks in the serial gdb stub so I
> can connect gdb. It has been great using a serial port because it is
> simple but it is showing its age.
> It would be nice to have an alternative to this but there is nothing
> happening in RTEMS project I know of. I would like to see users
> interested in x86 platform contact me directly about possible solutions
> for better support for debugging.
> The Atom devices have a JTAG based debug protocol called ITP which is
> covered by NDA and so there are no open source solutions. I talked to
> Intel about this and it went no where.
> Chris
> _______________________________________________
> users mailing list
> users at

Peter Dufault
HD Associates, Inc.      Software and System Engineering

More information about the users mailing list