From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from outbound-ss-761.bluehost.com (outbound-ss-761.bluehost.com [74.220.211.250]) by sourceware.org (Postfix) with ESMTPS id B78A03858D28 for ; Sun, 23 Jul 2023 19:51:58 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org B78A03858D28 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tromey.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=tromey.com Received: from cmgw11.mail.unifiedlayer.com (unknown [10.0.90.126]) by progateway8.mail.pro1.eigbox.com (Postfix) with ESMTP id 131991004BBAA for ; Sun, 23 Jul 2023 19:51:52 +0000 (UTC) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with ESMTP id Nf7PqYCPNqK42Nf7PqVISD; Sun, 23 Jul 2023 19:51:52 +0000 X-Authority-Reason: nr=8 X-Authority-Analysis: v=2.4 cv=Uoymi88B c=1 sm=1 tr=0 ts=64bd84d8 a=ApxJNpeYhEAb1aAlGBBbmA==:117 a=ApxJNpeYhEAb1aAlGBBbmA==:17 a=OWjo9vPv0XrRhIrVQ50Ab3nP57M=:19 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=ws7JD89P4LkA:10:nop_rcvd_month_year a=Qbun_eYptAEA:10:endurance_base64_authed_username_1 a=cE_jovpWt-9_qpTy6oMA:9 a=ZXulRonScM0A:10:nop_mobile_phish_fin_act DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date:References :Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=olCEC1wkQp03atKgwH1wwoTIIG/VPxVFlJL0mR/N1eE=; b=EQ4jWEAR6geZ+0c2xO6DwkZ3eu OFUyYCjDNGI/VWYWnZ2LFNyUwI9uNNTNFoHuxXSBg5KDX01CluIIACVTGS9iq3rw7g1JTB9pvkKho IoWJCDfXDETaX9qzDexXS8/2R; Received: from 75-166-135-140.hlrn.qwest.net ([75.166.135.140]:51692 helo=prentzel) by box5379.bluehost.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1qNf7P-000syv-1O; Sun, 23 Jul 2023 13:51:51 -0600 From: Tom Tromey To: Andrew Haley via Gdb Cc: Paul Koning , John Baldwin , Andrew Haley Subject: Re: GDB / AArch64 / MacOS References: <4F50AD08-F333-45D8-8B1E-C050A7636295@comcast.net> X-Attribution: Tom Date: Sun, 23 Jul 2023 13:51:50 -0600 In-Reply-To: (Andrew Haley via Gdb's message of "Wed, 19 Jul 2023 20:02:40 +0100") Message-ID: <87h6pu9zjd.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 75.166.135.140 X-Source-L: No X-Exim-ID: 1qNf7P-000syv-1O X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 75-166-135-140.hlrn.qwest.net (prentzel) [75.166.135.140]:51692 X-Source-Auth: tom+tromey.com X-Email-Count: 1 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-Spam-Status: No, score=-3019.2 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,JMQ_SPF_NEUTRAL,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Andrew> Maybe I could start with the AArch64/BSD target, do you think? The Andrew> differences would be the way that args are passed between functions Andrew> and stack layouts, I guess. There's two parts to a gdb port like this. One is the "tdep" code. This holds target- and arch-dependent information. This is where you'd put things like knowledge of the ABI. There's also the "nat" code. This is host dependent code that knows how to do low-level debugging. E.g., linux-nat handles calling ptrace. The split is done so cross debugging can work -- the tdep code can be built anywhere and be used for remote debugging. These days the nat code tends to be shared somewhat with gdbserver, though I don't think that was ever ported to Darwin. For a new Darwin port you will probably need both of these. Tom