From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3DBF0764.10808@intrex.net> Date: Tue, 29 Oct 2002 17:10:44 -0500 From: Ralph Blach MIME-Version: 1.0 To: Hollis Blanchard Cc: embedded list Subject: Re: DBCR0 reset? References: <1035919100.1013.1226.camel@granite.austin.ibm.com> Content-Type: text/plain; charset=us-ascii; format=flowed Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: 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/