From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from simark.ca by simark.ca with LMTP id h8e8Esk4x2ZvdBAAWB0awg (envelope-from ) for ; Thu, 22 Aug 2024 09:10:33 -0400 Authentication-Results: simark.ca; dkim=pass (1024-bit key; secure) header.d=sourceware.org header.i=@sourceware.org header.a=rsa-sha256 header.s=default header.b=l7hjJI0Z; dkim-atps=neutral Received: by simark.ca (Postfix, from userid 112) id 3459A1E0D0; Thu, 22 Aug 2024 09:10:33 -0400 (EDT) Received: from server2.sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by simark.ca (Postfix) with ESMTPS id 0FCC11E0AC for ; Thu, 22 Aug 2024 09:10:31 -0400 (EDT) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 71B05387086E for ; Thu, 22 Aug 2024 13:10:30 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 71B05387086E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1724332230; bh=tr+nY55DkJrGADYAD4zbfIwXG83h1TR/SuygZ/C/gWs=; h=Subject:In-Reply-To:Date:Cc:References:To:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From:Reply-To:From; b=l7hjJI0Zcb/PM9JGb5BjCBuavh7oSBFvfvaIiNQ0Ri2MQD4wQnKZCTDTbICu2Ey/D i9d/uuwkq0cFyZ+mj6uPjnINMU+dQCtWsHtnkWIYeJFm1UcYmX5RGi4wHfkx1gkyx6 dbCPdgLpiQQXZrZpwNt0tLsUtuqCvRCz1F/z6O3A= Received: from resdmta-h2p-547626.sys.comcast.net (resdmta-h2p-547626.sys.comcast.net [IPv6:2001:558:fd02:2446::e]) by sourceware.org (Postfix) with ESMTPS id 328AC386074B for ; Thu, 22 Aug 2024 13:09:52 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 328AC386074B ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 328AC386074B ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1724332193; cv=none; b=EzGWzaamWwigzI5sy9wWOBbXMIh4XU4hxq/oYmScK6aHIOuH0Gd/cKXUaSWl24SDvzzN9xp8O7umnWp0YAtNUZHO+wO38UDXXagje4WX2laLZSHck7JTverBE5DfTqRohqXIaZf+C5zmDKkKfHhSAAwAuu6iEHdIzxoYryYXz9c= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1724332193; c=relaxed/simple; bh=Sj4XnZGbIVbD1hqKPPWUMWJv0GCyYyTQZ0tadvzTRTA=; h=DKIM-Signature:Mime-Version:Subject:From:Date:Message-Id:To; b=rKBOscuGXtX3a+3c/OxL/2Y2BXpEoqloMKsUG+LyNJCA/Vn8ehRi97P/lUXawTOEW+dvCrwGVWgIRmIPtdKBMbZvCv51N2KapEt4g9KnwmhZzWL9gAZX8A7cAahlpW4D6/yrcxtoerDMGx/yEy7fYsQmJT+ELgqcGoYcxSlladA= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from resomta-h2p-555059.sys.comcast.net ([96.102.179.197]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 256/256 bits) (Client did not present a certificate) by resdmta-h2p-547626.sys.comcast.net with ESMTPS id h5DhspfO1YbjIh7ZVsqi7K; Thu, 22 Aug 2024 13:09:49 +0000 Received: from smtpclient.apple ([73.60.223.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 256/256 bits) (Client did not present a certificate) by resomta-h2p-555059.sys.comcast.net with ESMTPSA id h7ZTstjqXp9y9h7ZUs7Kq9; Thu, 22 Aug 2024 13:09:49 +0000 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3696.120.41.1.10\)) Subject: Re: Expose Frame Type and Stop Reason in python Unwinder API In-Reply-To: Date: Thu, 22 Aug 2024 09:09:46 -0400 Cc: gdb@sourceware.org Content-Transfer-Encoding: quoted-printable Message-Id: References: To: Andrew Wock X-Mailer: Apple Mail (2.3696.120.41.1.10) X-CMAE-Envelope: MS4xfJlHW8q2XMuDy2Sk9QzLS04Ync7vneZFBxeDyeRtbxqahQw+eA/JxxCLoRANwLG7HC7M9GPS80ypwaqOn/JxN5X1IDxF0jDPwoQF8L/gH+XZ2yFKUwV+ Xsjz1ZbB67/Rg65ci3sQiNUM9dSjnE8wV9Ko27dhznEzlTFDtgHAF74lJwPNoGRFPY3z64DDI+XzToEr/Y3Y3RcKUdh9XsybCXttGrRtfCh8iEwzGZuVnVdL X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Paul Koning via Gdb Reply-To: Paul Koning Errors-To: gdb-bounces~public-inbox=simark.ca@sourceware.org Sender: "Gdb" > On Aug 21, 2024, at 10:28 PM, Andrew Wock via Gdb = wrote: >=20 > Hello, >=20 > Recently I wrote a kernel trapframe unwinder using the python API, and > I was able to successfully extract the registers from the trapframe. > However, sometimes gdb would throw the "previous frame inner to this > frame" error on me. This is because unwinding a trapframe sometimes > results in unwinding to a different stack. >=20 > The way this is fixed in the internal unwinder API is that there are > special frame types such as SIGTRAMP_FRAME which don't get checked for > that error. >=20 > Additionally, some trapframes unwind into userspace. In those cases > I'd like to be able to stop the backtrace by setting a stop reason. For that case, stopping should be an option. In the past I have found = it very useful to be able to continue from kernel to user, in certain = situations. paul