From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:53653) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gmMwZ-0006Si-Rr for qemu-devel@nongnu.org; Wed, 23 Jan 2019 13:08:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gmMwY-0002Py-Sk for qemu-devel@nongnu.org; Wed, 23 Jan 2019 13:08:07 -0500 Received: from out5-smtp.messagingengine.com ([66.111.4.29]:37869) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gmMwY-0002Pb-HL for qemu-devel@nongnu.org; Wed, 23 Jan 2019 13:08:06 -0500 Date: Wed, 23 Jan 2019 13:08:04 -0500 From: "Emilio G. Cota" Message-ID: <20190123180804.GA1040@flamenco> References: <251451940.431966.1548259107629.ref@mail.yahoo.com> <251451940.431966.1548259107629@mail.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <251451940.431966.1548259107629@mail.yahoo.com> Subject: Re: [Qemu-devel] m68k gdb has stopped single stepping correctly List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Lucien Anti-Spam Cc: "qemu-devel@nongnu.org" On Wed, Jan 23, 2019 at 15:58:27 +0000, Lucien Anti-Spam via Qemu-devel wrote: > Hi folks, > I noticed that with 3.x release that the GDB options (-S -s) for certain CPU results in very weird stepping.Usually stops afer a few steps, whilst the stub continues responding the PC doesnt update, however, I have only deeply looked at the m68k. > In the case of the m68K the SR gets the trace bit set (T=10b), and the PC doesnt update.The m68k gdbstub, and main gdbstub seem mostly unchanged.But it seems the INSN handling has changed greatly for the m68k. > Does anyone have any ideas what happened? Can you please bisect to find at which point things start misbehaving? Thanks, Emilio