From: Hollis Blanchard <hollis@austin.ibm.com>
To: embedded list <linuxppc-embedded@lists.linuxppc.org>
Subject: DBCR0 reset?
Date: 29 Oct 2002 13:18:19 -0600 [thread overview]
Message-ID: <1035919100.1013.1226.camel@granite.austin.ibm.com> (raw)
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 reply other threads:[~2002-10-29 19:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-29 19:18 Hollis Blanchard [this message]
2002-10-29 22:10 ` DBCR0 reset? Ralph Blach
2002-10-30 3:15 ` David Gibson
2002-10-30 19:52 ` Matt Porter
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