From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19141 invoked by alias); 28 Sep 2016 16:27:53 -0000 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 Received: (qmail 19128 invoked by uid 89); 28 Sep 2016 16:27:52 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-4.7 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_PASS autolearn=ham version=3.3.2 spammy= X-HELO: mx5.ptsecurity.com Received: from mx5.ptsecurity.com (HELO mx5.ptsecurity.com) (45.58.112.35) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 28 Sep 2016 16:27:51 +0000 Received: from dc1-mail-01.ptsecurity.ru (10.0.52.111) by ny-mx-01.ptsecurity.ru (10.6.20.6) with Microsoft SMTP Server (TLS) id 15.1.466.34; Wed, 28 Sep 2016 19:27:48 +0300 Received: from [10.0.72.136] (10.0.72.136) by dc1-mail-01.ptsecurity.ru (10.0.52.111) with Microsoft SMTP Server (TLS) id 15.1.466.34; Wed, 28 Sep 2016 19:27:47 +0300 Subject: Re: Custom core file To: Jan Kratochvil References: <20160928145850.GA20365@host1.jankratochvil.net> <20160928153253.GA26040@host1.jankratochvil.net> CC: From: Nikolay Martyanov Message-ID: Date: Wed, 28 Sep 2016 16:27:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <20160928153253.GA26040@host1.jankratochvil.net> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: dc1-mail-01.ptsecurity.ru (10.0.52.111) To dc1-mail-01.ptsecurity.ru (10.0.52.111) X-SW-Source: 2016-09/txt/msg00072.txt.bz2 On 09/28/2016 06:32 PM, Jan Kratochvil wrote: > On Wed, 28 Sep 2016 17:18:35 +0200, Nikolay Martyanov wrote: >> Idea is very similar to `kdump`, you are right. But instead of Linux kernel >> I have a hypervisor running on a bare-metal. So, in some point of view, I >> try to implement my own kdump. And it will dump not Linux kernel mem, but >> mem of hypervisor. > > OK, so core files are not standardized the way executables+shlibs are by the > standards of ELF-generic and ELF-x86_64 or ELF-x86 addons. You can either > invent your own format (based on ELF or not) or - what I suggest - is to just > mimic the Linux kernel process format. > > Not sure I can mimic Linux format exactly. At least I have another set of registers in use (VMX of Intel x86 arch are involved). May be it's critical, may be not... Any way, Linux code was the first thing I looked at. So my way is "mimic as close as possible, adapt as few as possible". Thanks for confirmation that it is one of possible ways to solve my problem =) And in case I can't mimic it for 100%, I have to make several adaptations in GDB. The details were listed in my first message. Still hoping someone can comment on them Thanks, Nikolay