Date: Wed, 2 Mar 2005 16:05:53 +0100 From: "Leubner, Achim" <Achim_Leubner@adaptec.com> To: <freebsd-scsi@freebsd.org>, <freebsd-hackers@freebsd.org> Subject: Remote kernel debugging using GDB Message-ID: <B51CDBDEB98C094BB6E1985861F53AF302DE88@nkse2k01.adaptec.com>
next in thread | raw e-mail | index | archive | help
Hello all, I want to do some remote kernel debugging using GDB on FreeBSD 5.3. I connected host and target with a null-modem cable on COM1 and made a debug kernel with "options GDB", "options DDB", "options KDB" and "makeoptions DEBUG=-g" and I set the port flags of sio0 to 0x80. But if I start the debug kernel on the target machine with "boot -d" I always get the message "GDB: no debug ports present" and if I want to start GDB I get "The remote GDB backend could not be selected". In "debug.kdb.available" I only see the ddb and "sysctl -w debug.kdb.current=gdb" fails. Does anybody know what´s going wrong here? Any help is greatly appreciated. Thanks, Achim Leubner ICP vortex GmbH / Adaptec Inc. Phone: +49-351-8718291
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?B51CDBDEB98C094BB6E1985861F53AF302DE88>