Subject: Re: issues with KGDB and ARM
To: Karl Janmar <>
From: Hiroyuki Bessho <>
List: port-arm
Date: 03/29/2005 16:38:28
At Tue, 29 Mar 2005 01:13:05 +0200,
Karl Janmar wrote:
> Hi there ARM hackers!
> I have put some work in my GP32 port (which I talked about erlier in 
> this list). I had some issues when I was using KGDB with netbsd/arm.
> I use the 2.0 Release as my source base.
>   I needed to do some modification to generate a valid KGDB undefined 
> instruction when single stepping, if I don't do this the kernel will 
> generate an unhandled undefined exception.
> This happen when sys/ddb/db_run.c: db_set_single_step() calling machdep 
> stuff in db_machdep.c inserting a BKPT_INST.

  Do you have both DDB and KGDB defined in your config file?  I guess
so because db_run.c:db_set_single_step() is in #if defined(DDB)

  Do you have same problems if you undefine DDB?