Date: 27 Sep 1997 12:00:29 +0800 From: grog@lemis.com (Greg Lehey) To: questions@freebsd.org Subject: Re: disassembler - is there any for FreeBSD Message-ID: <60i0ct$nhv$1@FreeBSD.csie.NCTU.edu.tw>
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On Fri, Sep 26, 1997 at 09:19:04AM -0400, William Bulley wrote: > According to Greg Lehey: >> >> gdb and ddb both include one. It would probably be easier to extract >> ddb's one, but last time I looked at it, I gave up due to lack of >> time. It's not completely trivial. > > I have a man page for ddb (2.2-970814-RELENG) but I can't find the > program itself... > > There is no Makefile in /usr/src/sys/ddb so I can't use that to > determine where the ddb debugger ends up. :-( ddb is part of the kernel--it's the kernel debugger. You install it by adding the following lines to the kernel config file: options DDB # # Don't drop into DDB for a panic. Intended for unattended operation # where you may want to drop to DDB from the console, but still want # the machine to recover from a panic # options DDB_UNATTENDED options BREAK_TO_DEBUGGER Then you build a new kernel. The usual way to invoke ddb is to hit CTRL-ALT-ESC. This will suspend the operating system until you return. Greg
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