From: Ralph Blach <rblach@intrex.net>
To: Hollis Blanchard <hollis@austin.ibm.com>
Cc: embedded list <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: DBCR0 reset?
Date: Tue, 29 Oct 2002 17:10:44 -0500 [thread overview]
Message-ID: <3DBF0764.10808@intrex.net> (raw)
In-Reply-To: 1035919100.1013.1226.camel@granite.austin.ibm.com
Hollis,
The OS does this. I send you the info on how to disable it tommorrow.
Chip
Hollis Blanchard wrote:
> Has anyone had problems with hardware breakpoints from external
> debuggers? I'm using RISCWatch, which sets DBCR0 and IAC1 for me (yes
> I've verified that). I'm then using 'echo > /proc/sys' to invoke my
> code. However by the time I get to my sysctl proc handler, DBCR0 has
> been reset from 0x80810000 to 0x00010000, hence IAC1 is ignored.
>
> I don't see much use of DBCR0, other than initialization and then save
> during exception prologs and then restore during task restore. Can
> anyone point me to where it might be reset?
>
> -Hollis
>
>
>
> .
>
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-10-29 22:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-29 19:18 DBCR0 reset? Hollis Blanchard
2002-10-29 22:10 ` Ralph Blach [this message]
2002-10-30 3:15 ` David Gibson
2002-10-30 19:52 ` Matt Porter
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