From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B991C47089 for ; Wed, 26 May 2021 18:47:30 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E0B87613BF for ; Wed, 26 May 2021 18:47:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E0B87613BF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=vivier.eu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:39574 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1llyYy-0007mV-UJ for qemu-devel@archiver.kernel.org; Wed, 26 May 2021 14:47:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36046) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llyY4-0006SQ-Sa for qemu-devel@nongnu.org; Wed, 26 May 2021 14:46:32 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:33079) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llyY2-0007Uw-Rz for qemu-devel@nongnu.org; Wed, 26 May 2021 14:46:32 -0400 Received: from [192.168.100.1] ([82.142.6.50]) by mrelayeu.kundenserver.de (mreue011 [213.165.67.103]) with ESMTPSA (Nemesis) id 1Mbies-1l8nBC36R4-00dHmS; Wed, 26 May 2021 20:46:28 +0200 Subject: Re: [PATCH 0/4] target/m68k: implement m68k "any instruction" trace mode To: Mark Cave-Ayland , qemu-devel@nongnu.org References: <20210519142917.16693-1-mark.cave-ayland@ilande.co.uk> From: Laurent Vivier Message-ID: Date: Wed, 26 May 2021 20:46:28 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <20210519142917.16693-1-mark.cave-ayland@ilande.co.uk> Content-Type: text/plain; charset=utf-8 Content-Language: fr Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:rDvKtY+SF6M+HACWDGAhIsGEepMWU4fohpeqNAzOu4ER3kHdd8U dOADUnaOE2CtVeWdGvZ/nAXtPA6ygvGYrg/16jXYaJ/Pc2ERfriXBNuGt3hQssIL/7jUYIX CDeSnpJ8X0Jkyw+Ux6f8JsGmLvGiLYeLrxdwwO9XNe3Ec5I/TUTDZWeVJaUzOVB+v9oaF9i BZTUkwXnOx1j3zt3uvY7g== X-UI-Out-Filterresults: notjunk:1;V03:K0:QBG/1sTAtJU=:YA+o9Vo4iqOgRDN2mKBNXC 90rE4KwzB9mAy8e9hb8Wu469nLQgyI/PJZYNkBMrl7MF3pU7yCeCU3+csoa9dAaHZat/Tz+c/ k1LGJ8F9c/DM9GUKn0OOVIXv7UpVcarowO//bTuz1e1WuHwkvVuQZNK1enFBZj7/4fWneW8FU 4yYdWQ8RifX+VGYqHlBSiK2PyTab5s2Hisi5Et+avB3ZA6jMF+D8IxyVDgt6Y8TogElhT5iuS CFGb1mPwXlSPwAEiTgpG/EWdF5OaS/RVCBL02vRknCLz+VP2uBiv2hL0HPaz/p3D+P8/li3Kx 6pWs8rnlLeMAcJuAAV5UedGBt4Qvj4M4MCf47GhN2mRhyJgUQSPrb/Q+y5jEqGxTFELmKkXm3 inkL0hvXtyRkynovc/fVr0ol0a2ofQ54xIggSjDYgIL89egK4Fok5DlXj/vxGAgggZe4laYva hG85Evc28PHk2Ou+anPVCE/s5akrFZncOy0P5yaXHNiJ6GXD4uSi4LcL6blUShBpgo8M/9d2M Iq/3XHhnYDDPkJdh6fA0fg= Received-SPF: none client-ip=212.227.126.133; envelope-from=laurent@vivier.eu; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Le 19/05/2021 à 16:29, Mark Cave-Ayland a écrit : > This patchset implements the m68k "any instruction" tracing mode which is used > by the NetBSD kernel debugger to implement single-stepping. It is based upon > reading through the M68000 PRM and looking at how the ARM target handles both > gdbstub and architectural single-step exceptions. > > With this patchset it becomes possible to single-step the NetBSD kernel using > the in-built kernel debugger: > > Stopped in pid 0.1 (system) at netbsd:cpu_Debugger+0x6: unlk a6 > db> s > Stopped in pid 0.1 (system) at netbsd:cpu_Debugger+0x8: rts > db> > Stopped in pid 0.1 (system) at netbsd:main+0x2c: jsr kernel_lock_init > [addr:0x1a38f6 ] > db> > Stopped in pid 0.1 (system) at netbsd:kernel_lock_init: linkw a6,#0 > db> > Stopped in pid 0.1 (system) at netbsd:kernel_lock_init+0x4: clrb kernel_l > ock [addr:0x33f400 ] > db> > Stopped in pid 0.1 (system) at netbsd:kernel_lock_init+0xa: clrb kernel_l > ock_dodebug [addr:0x35b48c ] > db> > Stopped in pid 0.1 (system) at netbsd:kernel_lock_init+0x10: unlk a6 > db> > Stopped in pid 0.1 (system) at netbsd:kernel_lock_init+0x12: rts > db> c > Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, > [ 1.0000000] 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, > [ 1.0000000] 2018, 2019, 2020 The NetBSD Foundation, Inc. All rights reserved. > [ 1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993 > [ 1.0000000] The Regents of the University of California. All rights reserved. > > [ 1.0000000] NetBSD 9.1 (GENERIC) #0: Sun Oct 18 19:24:30 UTC 2020 > ... etc ... > > > Signed-off-by: Mark Cave-Ayland > > [q800-macos-upstream patchset series: 2] > > Mark Cave-Ayland (4): > target/m68k: introduce is_singlestepping() function > target/m68k: call gen_raise_exception() directly if single-stepping in > gen_jmp_tb() > target/m68k: introduce gen_singlestep_exception() function > target/m68k: implement m68k "any instruction" trace mode > > target/m68k/cpu.h | 8 +++++++ > target/m68k/translate.c | 51 ++++++++++++++++++++++++++++++++++------- > 2 files changed, 51 insertions(+), 8 deletions(-) > Applied to my m68k-for-6.1 tree. Thanks, Laurent