From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5565 invoked by alias); 15 Jun 2015 10:57:11 -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 5539 invoked by uid 89); 15 Jun 2015 10:57:10 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=1.5 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,KAM_LOTSOFHASH,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-ob0-f174.google.com Received: from mail-ob0-f174.google.com (HELO mail-ob0-f174.google.com) (209.85.214.174) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Mon, 15 Jun 2015 10:57:09 +0000 Received: by obcej4 with SMTP id ej4so61372498obc.0 for ; Mon, 15 Jun 2015 03:57:07 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.182.79.197 with SMTP id l5mr2214128obx.70.1434365827414; Mon, 15 Jun 2015 03:57:07 -0700 (PDT) Received: by 10.202.184.213 with HTTP; Mon, 15 Jun 2015 03:57:07 -0700 (PDT) In-Reply-To: References: Date: Mon, 15 Jun 2015 10:57:00 -0000 Message-ID: Subject: Re: Is there single step debugging support being added to aarch64-linux? From: Prafull Suryawanshi To: Andreas Schwab Cc: gdb@sourceware.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes X-SW-Source: 2015-06/txt/msg00016.txt.bz2 I am using kgdb and trying to do single step (software single step). I see that infrun loops. (I enabled remote_debug option and compiled gdb 7.7 as 7.9 has issue with connection) infrun: clear_proceed_status_thread (Thread 3462) infrun: clear_proceed_status_thread (Thread 3444) infrun: proceed (addr=3D0xffffffffffffffff, signal=3DGDB_SIGNAL_DEFAULT, st= ep=3D1) infrun: resume (step=3D1, signal=3DGDB_SIGNAL_0), trap_expected=3D1, current thread [Thread 3462] at 0xffffffc00021014c Sending packet: $Hcd86#7d...Ack Packet received: OK Sending packet: $s#73...Ack infrun: wait_for_inferior () Packet received: T05thread:0d86; infrun: target_wait (-1, status) =3D infrun: 42000 [Thread 3462], infrun: status->kind =3D stopped, signal =3D GDB_SIGNAL_TRAP infrun: infwait_normal_state infrun: TARGET_WAITKIND_STOPPED Sending packet: $g#67...Ack Packet received: c045b049c0ffffff01000000000000004c012100c0fffffff912a660c0ffffff28849f36c0f= fffff000000000000000030334901c0ffffff00000000000000003f00000000000000000000= 0000000000009000000000000001000000000000000100000000000000c012800820000000c= 012800820000000c0e0000000000000d8981a00c0ffffffdc1c650820000000c01280082000= 0000c045b049c0ffffff010000000000000001000000000000000000000000000000c8be0d3= 5c0ffffff80e91b58c0ffffff0010000000000000f845b049c0ffffff00a0c5082000000000= 800d35c0ffffffc0bd0d35c0fffffffcea1c00c0fffffff0bb0d35c0ffffff50012100c0fff= fff450100000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000000000000000000000000000000000000000000000000000000000000000000000= 000000000 infrun: stop_pc =3D 0xffffffc000210150 Sending packet: $mffffffc000210150,4#4d...Ack Packet received: fd030091 Sending packet: $mffffffc00021014c,4#7f...Ack Packet received: fd7ba3a9 Sending packet: $mffffffc000210150,4#4d...Ack Packet received: fd030091 infrun: stepping inside range [0xffffffc00021014c-0xffffffc000210170] Sending packet: $Z0,ffffffc00021014c,4#c8...Ack Packet received: OK infrun: resume (step=3D1, signal=3DGDB_SIGNAL_0), trap_expected=3D0, current thread [Thread 3462] at 0xffffffc000210150 Sending packet: $Hc0#db...Ack Packet received: OK Sending packet: $s#73...Ack infrun: prepare_to_wait Then I build the gdb using arch_dump enable option gdbarch_dump: gdbarch_software_single_step_p() =3D 0 I see that in gdb code, function aarch64_linux_software_single_step not pre= sent. I guess above loop expected if aarch64_linux_software_single_step absent, r= ight? Thanks, Prafull On Mon, Jun 15, 2015 at 4:08 PM, Andreas Schwab wrote: > Prafull Suryawanshi writes: > >> I am trying it on 64 bit armv8 system but not able to doit. >> Found issue in gdb source code and absence of this function in >> aarch64-linux-tdep.c file. Anyone knows if support getting added or >> not? > > The stepi command is working fine on aarch64. What do you get if you > try it? > > Andreas. > > -- > Andreas Schwab, SUSE Labs, schwab@suse.de > GPG Key fingerprint =3D 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 > "And now for something completely different."