Date: Wed, 11 Sep 2002 19:24:33 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: hackers@freebsd.org Cc: nate@root.org Subject: Re: interrupting target kernel using single sio Message-ID: <200209120224.g8C2OXO9032528@vashon.polstra.com> In-Reply-To: <Pine.BSF.4.21.0209111315170.22261-100000@root.org> References: <Pine.BSF.4.21.0209111315170.22261-100000@root.org>
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In article <Pine.BSF.4.21.0209111315170.22261-100000@root.org>, Nate Lawson <nate@root.org> wrote: > On Mon, 9 Sep 2002, John Polstra wrote: > > > > BSD/OS has a little state machine in its sio driver which notices > > if something looking like a kgdb packet comes in and interrupts > > the target automatically. It's extremely handy. You just type > > "target remote /dev/tty00" into kgdb and the target breaks into the > > debugger -- no muss, no fuss. I wish we had this feature too. It > > should obviously be under the control of a sysctl to protect against > > accidental entry into the debugger. > > > > Another nice thing about BSD/OS is that when you exit kgdb, the target > > OS automatically starts running again. So you can enter and exit the > > debugger painlessly, as many times as you'd like. > > Any chance of getting that from BSD/OS? If not, perhaps we could > reimplement. We used to have the BSD/OS sources on-line, and we had carte blanche to take things from them and put them into FreeBSD. I don't know what the situation is now. John -- John Polstra John D. Polstra & Co., Inc. Seattle, Washington USA "Disappointment is a good sign of basic intelligence." -- Chögyam Trungpa To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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