From nobody Fri Nov 7 09:11:03 2025 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 (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1547819884990738.7063063922693; Fri, 18 Jan 2019 05:58:04 -0800 (PST) Received: from localhost ([127.0.0.1]:39846 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gkUep-0006yY-OV for importer@patchew.org; Fri, 18 Jan 2019 08:58:03 -0500 Received: from eggs.gnu.org ([209.51.188.92]:52447) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gkUW1-0000HZ-Vw for qemu-devel@nongnu.org; Fri, 18 Jan 2019 08:48:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gkUVz-0003OO-Qn for qemu-devel@nongnu.org; Fri, 18 Jan 2019 08:48:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:60768) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gkUVx-0003Im-SX for qemu-devel@nongnu.org; Fri, 18 Jan 2019 08:48:54 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 68D09C067831 for ; Fri, 18 Jan 2019 13:48:50 +0000 (UTC) Received: from localhost (unknown [10.36.112.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id 969F2600C2; Fri, 18 Jan 2019 13:48:46 +0000 (UTC) From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Date: Fri, 18 Jan 2019 17:48:43 +0400 Message-Id: <20190118134843.28916-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 18 Jan 2019 13:48:50 +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] 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 --- 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 690827e6fc6..90c6fd13b93 --- 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] >=3D 3: + long =3D int + # 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]")% (long(self.val), name) + return ("0x%x") % (long(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