From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 54737 invoked by alias); 3 Mar 2015 18:18:42 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 54724 invoked by uid 89); 3 Mar 2015 18:18:41 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.0 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Tue, 03 Mar 2015 18:18:40 +0000 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t23IIaiq013594 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 3 Mar 2015 13:18:37 -0500 Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t23IIYo5026355; Tue, 3 Mar 2015 13:18:35 -0500 Message-ID: <54F5FAF9.8090308@redhat.com> Date: Tue, 03 Mar 2015 18:18:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Sergio Durigan Junior CC: Yao Qi , gdb-patches@sourceware.org Subject: Re: [RFC] Support command "catch syscall" properly on different targets References: <1425047015-1906-1-git-send-email-qiyaoltc@gmail.com> <877fv3kqx1.fsf@redhat.com> <86lhjei8md.fsf@gmail.com> <54F5A90E.8050704@redhat.com> <87bnkaklbe.fsf@redhat.com> In-Reply-To: <87bnkaklbe.fsf@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-SW-Source: 2015-03/txt/msg00108.txt.bz2 On 03/03/2015 06:06 PM, Sergio Durigan Junior wrote: > On Tuesday, March 03 2015, Pedro Alves wrote: > >> On 03/03/2015 12:11 PM, Yao Qi wrote: >>> Sergio Durigan Junior writes: >>> >>>> You mean it's possible to use "catch syscall" on HP-UX targets? I >>>> wonder how it works. >>> >>> Yes, that is what I meant, at least that is what I can tell from the >>> source. >> >> TARGET_WAITKIND_SYSCALL_ENTRY / TARGET_WAITKIND_SYSCALL_RETURN >> was supported by the HP-UX target long before GNU/Linux gained >> support. See inf-ttrace.c. However, I don't think "catch syscall" >> itself ever did. inf_ttrace_enable_syscall_events is only used >> for watchpoints. Not that I find we should go fix it, mind you. > > Exactly, that's what I meant by my question. Sorry for not being > clear. > Ahah, looks like we've been through this before: https://sourceware.org/ml/gdb-patches/2013-12/msg00587.html I apologize on behalf of my former self. He was silly. :-) > I remember seeing TARGET_WAITKIND_SYSCALL_{ENTRY,RETURN} when > implementing "catch syscall", and I even remember making a decision to > use them instead of creating other TARGET_WAITKIND's. However, the > "catch syscall" itself doesn't work on HP-UX. > > Anyway, I just raised this point because we shouldn't "return 1" when > asked if inf-ttrace.c supports "catch syscall". Yeah. In any case, AFAIR, we were going to remove support for hpux, as nobody really cares about it anymore... Thanks, Pedro Alves