From owner-freebsd-hackers@FreeBSD.ORG Sat May 9 23:04:02 2015 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 90963895 for ; Sat, 9 May 2015 23:04:02 +0000 (UTC) Received: from mail-qg0-x22b.google.com (mail-qg0-x22b.google.com [IPv6:2607:f8b0:400d:c04::22b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4815B1ECC for ; Sat, 9 May 2015 23:04:02 +0000 (UTC) Received: by qgej70 with SMTP id j70so52440308qge.2 for ; Sat, 09 May 2015 16:04:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-type; bh=Zxl8p/IzhkcV1QC/JnrjlM+QO4SZkW4ZD3xgb4LZXtM=; b=UVtnCKeW9Ng23FP07D9FbgVS/1aU8DQ8NTb4VCbKRLBO9NKLt+mGepk2yz4VqrxIyH e8OgPGKd+WpjQ4+ohuCNY152RBXKyGbAtl5QUakjtLm+25Mjts6q/xVRJQe54dhBpawc /IKkTuf5qSAjS3M5S18+8X+x5vH89QSECr0IzE4r8B8M3CxhnzzczQnaZcKvwtzGvRmj aNxIvYY3yaRAnm32elErFXF2plfDlcuzSD7ziTS8fbyW19kVYDYVaDLg052ogU8hdN+G mJjmzzZjBbR9Zee9PbLz+buld6r33nO8ZR2t9L4kVnOLdrI9vl7RBTkSOBg+KuDi09v6 ewEQ== X-Received: by 10.55.56.8 with SMTP id f8mr8933142qka.97.1431212640918; Sat, 09 May 2015 16:04:00 -0700 (PDT) Received: from kan ([2601:6:6780:7e0:226:18ff:fe00:232e]) by mx.google.com with ESMTPSA id i137sm6697407qhc.49.2015.05.09.16.03.59 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 09 May 2015 16:03:59 -0700 (PDT) Date: Sat, 9 May 2015 19:03:47 -0400 From: Alexander Kabaev To: Sean Bruno Cc: freebsd-hackers@freebsd.org Subject: Re: How to get anything useful out of kgdb? Message-ID: <20150509190347.10e1e2c2@kan> In-Reply-To: <554E5263.8010205@ignoranthack.me> References: <554E41EE.2010202@ignoranthack.me> <554E4BD1.1030802@ignoranthack.me> <406EAA27-D825-408B-985E-DC3FFE746473@frob.org> <554E5263.8010205@ignoranthack.me> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.27; amd64-portbld-freebsd11.0) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/HoDQHSc/C35Ivq6dbtjpCCj"; protocol="application/pgp-signature" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 09 May 2015 23:04:02 -0000 --Sig_/HoDQHSc/C35Ivq6dbtjpCCj Content-Type: text/plain; charset=KOI8-R Content-Transfer-Encoding: quoted-printable On Sat, 09 May 2015 11:30:59 -0700 Sean Bruno wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 >=20 > On 05/09/15 11:09, Jeff Meegan wrote: > > You could try -O0, but also if you just care about txr, go up to > > frame 12 where txr initialized to the context arg to em_handle_tx() > > and print it out there. > >=20 > > -j >=20 > I'm guessing that the place to change -O2 -> -O0 is in kern.pre.mk ? >=20 > sean No, it means you need to iescover DEBUG and how it affects optimization level :) .if defined(DEBUG) _MINUS_O=3D -O CTFFLAGS+=3D -g .else ... Say, I have 'makeoptions DEBUG=3D"-g -gdwarf-2"' in my kernel config file. -gdwarf-2 is probably not required anymore. -- Alexander Kabaev --Sig_/HoDQHSc/C35Ivq6dbtjpCCj Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlVOklQACgkQQ6z1jMm+XZawEQCfdtOyX2ZDFNaeCuRs2ny8SgCi q30AoIKRovuIr1jaoo4zSs+f2PF1ss+e =PmPR -----END PGP SIGNATURE----- --Sig_/HoDQHSc/C35Ivq6dbtjpCCj--