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From: Marcel Moolenaar <marcel@xcllnt.net>
Date: Wed, 23 Aug 2006 21:10:45 -0700
To: Peter Grehan <grehan@freebsd.org>
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Subject: Re: gdb(1) in the tree
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On Aug 23, 2006, at 9:00 PM, Peter Grehan wrote:

>  PowerPC has separate non-coherent I and D caches - writing to  
> instruction memory requires a a flush of the D cache and an  
> invalidate of the I cache for that particular memory address.
>
>  This sounds like that type of problem. I'm assuming that gdb uses  
> a ptrace write to do the breakpoint. There probably needs to be an  
> MD callout after a PT_WRITE_I.

Yes, I was thinking along those lines as well, though I didn't had
the details.

>  I'll see if I can work out what NetBSD does.

Ok. In the mean time I'll work on kgdb...

-- 
  Marcel Moolenaar         USPA: A-39004          marcel@xcllnt.net