From nobody Sat May 4 15:25:44 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1549274838750976.1645307097095; Mon, 4 Feb 2019 02:07:18 -0800 (PST) Received: from localhost ([127.0.0.1]:39913 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gqb9k-00082s-OE for importer@patchew.org; Mon, 04 Feb 2019 05:07:12 -0500 Received: from eggs.gnu.org ([209.51.188.92]:57178) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gqb8S-0007Pp-Om for qemu-devel@nongnu.org; Mon, 04 Feb 2019 05:05:54 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gqb8Q-0001LH-Pp for qemu-devel@nongnu.org; Mon, 04 Feb 2019 05:05:52 -0500 Received: from mx1.redhat.com ([209.132.183.28]:54254) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gqb8O-0000zH-SF for qemu-devel@nongnu.org; Mon, 04 Feb 2019 05:05:49 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A98C53DE0F for ; Mon, 4 Feb 2019 09:57:31 +0000 (UTC) Received: from localhost (ovpn-112-54.ams2.redhat.com [10.36.112.54]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0575C9F7C4; Mon, 4 Feb 2019 09:57:26 +0000 (UTC) From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Date: Mon, 4 Feb 2019 10:57:25 +0100 Message-Id: <20190204095725.27259-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Mon, 04 Feb 2019 09:57:31 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2] qemu-gdb: add a QObject pretty printer X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , ehabkost@redhat.com, crosa@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Inspired by GObject/GType pretty printer. Example: machine_set_accel (obj=3D0x555556807550 [pc-i440fx-4.0-machine],... Signed-off-by: Marc-Andr=C3=A9 Lureau --- v2: - simplify python 2 compatibility code, suggested by Eduardo scripts/qemu-gdb.py | 58 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) mode change 100644 =3D> 100755 scripts/qemu-gdb.py diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py old mode 100644 new mode 100755 index 690827e6fc..1ec666e841 --- a/scripts/qemu-gdb.py +++ b/scripts/qemu-gdb.py @@ -21,6 +21,9 @@ import gdb =20 import os, sys =20 +if sys.version_info[0] < 3: + int =3D long + # Annoyingly, gdb doesn't put the directory of scripts onto the # module search path. Do it manually. =20 @@ -47,3 +50,58 @@ coroutine.CoroutinePCFunction() # Default to silently passing through SIGUSR1, because QEMU sends it # to itself a lot. gdb.execute('handle SIGUSR1 pass noprint nostop') + + +def is_object(val): + def is_object_helper(type): + if str(type) =3D=3D "Object": + return True + + while type.code =3D=3D gdb.TYPE_CODE_TYPEDEF: + type =3D type.target() + + if type.code !=3D gdb.TYPE_CODE_STRUCT: + return False + + fields =3D type.fields() + if len (fields) < 1: + return False + + first_field =3D fields[0] + return is_object_helper(first_field.type) + + type =3D val.type + if type.code !=3D gdb.TYPE_CODE_PTR: + return False + type =3D type.target() + return is_object_helper (type) + + +def object_class_name(instance): + try: + inst =3D instance.cast(gdb.lookup_type("Object").pointer()) + klass =3D inst["class"] + typ =3D klass["type"] + return typ["name"].string() + except RuntimeError: + pass + + +class QObjectPrinter: + def __init__(self, val): + self.val =3D val + + def to_string(self): + name =3D object_class_name(self.val) + if name: + return ("0x%x [%s]")% (int(self.val), name) + return ("0x%x") % (int(self.val)) + + +def lookup_type(val): + if is_object(val): + return QObjectPrinter(val) + return None + + +gdb.pretty_printers.append(lookup_type) --=20 2.20.1.98.gecbdaf0899