From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Cz02h-0004pl-M0 for qemu-devel@nongnu.org; Wed, 09 Feb 2005 17:10:40 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Cz02X-0004k3-Ku for qemu-devel@nongnu.org; Wed, 09 Feb 2005 17:10:35 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Cz02W-0004iC-2f for qemu-devel@nongnu.org; Wed, 09 Feb 2005 17:10:28 -0500 Received: from [212.216.176.224] (helo=vsmtp4.tin.it) by monty-python.gnu.org with esmtp (Exim 4.34) id 1CyziY-0002Qs-NZ for qemu-devel@nongnu.org; Wed, 09 Feb 2005 16:49:50 -0500 Received: from [82.52.93.14] (82.52.93.14) by vsmtp4.tin.it (7.0.027) id 420A62A8000113DA for qemu-devel@nongnu.org; Wed, 9 Feb 2005 22:49:48 +0100 Message-ID: <420A8591.4090208@email.it> Date: Wed, 09 Feb 2005 22:50:09 +0100 From: Paolo Minazzi MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Debugging registers DR0, DR7 don't work Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org I'm Paolo Minazzi and I am a new user of QEMU. I use it to learn protected mode programming in asm. QEMU is very useful as I can avoid to reset continuosly my PC. Nevertheless I have a problem. I have tried to write an asm program to try dr0 and dr7 debugging register. I have found that this register don' work and I cannot receive the excepction 1. My program instead works fine in a real DOS system. Does someone indicate me how to enable debugging register with QEMU ? Thanks in advance Paolo Minazzi