Date: Wed, 24 May 2000 18:07:59 -0700 (PDT) From: Archie Cobbs <archie@whistle.com> To: n_hibma@calcaphon.com (Nick Hibma) Cc: jcm@freebsd-uk.eu.org (J McKitrick), hackers@FreeBSD.ORG Subject: Re: boot/kernel debugging Message-ID: <200005250107.SAA02960@bubba.whistle.com> In-Reply-To: <Pine.BSF.4.20.0005211157520.797-100000@localhost> from Nick Hibma at "May 21, 2000 12:02:53 pm"
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Nick Hibma writes: > In general it is well possible to single step anything in the > kernel. You might find occasions where things stop working, and odd > cases were things all of a sudden start working, but normally, apart > from hardware things, most things are not time critical, or create > problems through spin locks. > > You can single step at boot time, by setting the flags in the loader. > > set boot_ddb # jump to debugger > set boot_gdb # use remote gdb for debugging by default Also don't for get 'sysctl -w debug.enter_debugger=ddb' (or gdb) to enter the debugger from the command line. -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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