From nobody Mon May 6 12:41:12 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; dkim=fail; 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 ARC-Seal: i=1; a=rsa-sha256; t=1573743061; cv=none; d=zoho.com; s=zohoarc; b=R9gmfsTYWenGoJBUHaHNLJqqJ3ReF2bL9vGAVTvTQdX0IDjFfwIlnDA7p7BPaNAE86/AbiyIKhOKhSU3k/zCoDZLwImDml3H5ut0Nn3OsRt4upQGSXfI4vZFmB9lZIrUVgRizvQ9/FX/704UzZkZRusLNBvYKY6xtpr+ZEJCIAw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1573743061; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=Sda8jhAYFmaT4wNFwT/2rbIqomRyFRvTlCBB/wU359U=; b=Gmc7tO2J9/BGB0157Ktx/UEyztxuNKou3bx5Md5FlGpKHg/KEAOhVfhC5IBiVXZPJLprN1ACemIPpkEWRazTXAD5MRCmgaGUJIfARHzl8Fyz4OSbhnbNI8BRMVZGLFH4FvYl9eE3LmdMQIGYx9ZVxEEPqSYWJeW7hwjn7H5y1WY= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; 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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1573743061889938.4250081526724; Thu, 14 Nov 2019 06:51:01 -0800 (PST) Received: from localhost ([::1]:58376 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVGSa-0002ew-FE for importer@patchew.org; Thu, 14 Nov 2019 09:51:00 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:52662) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVGPM-0000EJ-VI for qemu-devel@nongnu.org; Thu, 14 Nov 2019 09:47:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iVGPJ-0004jA-Nw for qemu-devel@nongnu.org; Thu, 14 Nov 2019 09:47:39 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:46108 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iVGPJ-0004hq-He for qemu-devel@nongnu.org; Thu, 14 Nov 2019 09:47:37 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-285-1zTNCVlFOAinLNgcF3RHKQ-1; Thu, 14 Nov 2019 09:47:35 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 814531005511 for ; Thu, 14 Nov 2019 14:47:34 +0000 (UTC) Received: from localhost (ovpn-112-38.ams2.redhat.com [10.36.112.38]) by smtp.corp.redhat.com (Postfix) with ESMTP id 227195C1C3; Thu, 14 Nov 2019 14:47:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573742856; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=Sda8jhAYFmaT4wNFwT/2rbIqomRyFRvTlCBB/wU359U=; b=TwSDotmQySD1vUvPY/oTyP5QpFpXpSdgoQGgsR3b/f4Xsoxuxj9jlLq985WfdRjIhh1oha qLygAjzpJ1t2AK/euPw2g/wRioo+9tzjuaZyFSHjkAjRtK7dIEXo4wmn4vyEUCVlXr3amg YWQZdt16Pm82uSaJzRFecGANHZhsLRU= From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Subject: [PATCH v3] qemu-gdb: add an Object pretty printer Date: Thu, 14 Nov 2019 18:47:25 +0400 Message-Id: <20191114144725.2310-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: 1zTNCVlFOAinLNgcF3RHKQ-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 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" X-ZohoMail-DKIM: fail (Header signature does not verify) 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 f2a305c42e..b9fc1d10d4 --- a/scripts/qemu-gdb.py +++ b/scripts/qemu-gdb.py @@ -18,6 +18,9 @@ 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 @@ -44,3 +47,58 @@ 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 ObjectPrinter: + 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 ObjectPrinter(val) + return None + + +gdb.pretty_printers.append(lookup_type) --=20 2.24.0