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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 7D052C43600 for ; Wed, 19 May 2021 14:31:45 +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 33A3E6008E for ; Wed, 19 May 2021 14:31:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 33A3E6008E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ilande.co.uk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:44420 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ljNEe-0002u0-8F for qemu-devel@archiver.kernel.org; Wed, 19 May 2021 10:31:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57330) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljNCW-0000WD-2g for qemu-devel@nongnu.org; Wed, 19 May 2021 10:29:32 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]:37842 helo=mail.default.ilande.bv.iomart.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ljNCU-0008GD-3b for qemu-devel@nongnu.org; Wed, 19 May 2021 10:29:31 -0400 Received: from host217-39-58-213.range217-39.btcentralplus.com ([217.39.58.213] helo=kentang.home) by mail.default.ilande.bv.iomart.io with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ljNCN-0003Tz-GR; Wed, 19 May 2021 15:29:27 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, laurent@vivier.eu Date: Wed, 19 May 2021 15:29:13 +0100 Message-Id: <20210519142917.16693-1-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 217.39.58.213 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH 0/4] target/m68k: implement m68k "any instruction" trace mode X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.default.ilande.bv.iomart.io) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.default.ilande.bv.iomart.io 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, SPF_HELO_NONE=0.001, SPF_PASS=-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" 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(-) -- 2.20.1