From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20582 invoked by alias); 29 Jan 2012 16:53:27 -0000 Received: (qmail 20570 invoked by uid 22791); 29 Jan 2012 16:53:26 -0000 X-SWARE-Spam-Status: No, hits=-6.6 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sun, 29 Jan 2012 16:53:08 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q0TGr8IQ023241 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Sun, 29 Jan 2012 11:53:08 -0500 Received: from host2.jankratochvil.net (ovpn-116-47.ams2.redhat.com [10.36.116.47]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q0TGr40k026284 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Sun, 29 Jan 2012 11:53:07 -0500 Date: Sun, 29 Jan 2012 16:53:00 -0000 From: Jan Kratochvil To: Xin Tong Cc: gdb@sourceware.org Subject: Re: software breakpoint in gdb Message-ID: <20120129165303.GA18465@host2.jankratochvil.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2012-01/txt/msg00109.txt.bz2 On Sun, 29 Jan 2012 17:48:30 +0100, Xin Tong wrote: > What if the interrupt instruction is bigger than breakpointed > instruction ? I do not know about such architecture, it probably does not exist. > Where is the breakpointed instruction kept after it is > overwritten by an interrupt instruction in gdb ? struct breakpoint->loc->target_info->shadow_contents Regards, Jan