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>
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Hello all, =20 I want to do some remote kernel debugging using GDB on FreeBSD 5.3.=20 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=3D-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=3Dgdb" fails. Does anybody know what=B4s going wrong here? Any help is greatly = appreciated. =20 Thanks, Achim Leubner ICP vortex GmbH / Adaptec Inc. Phone: +49-351-8718291 =20
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