From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1B661C432C3 for ; Fri, 15 Nov 2019 23:41:48 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E485F206D6 for ; Fri, 15 Nov 2019 23:41:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E485F206D6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=keithp.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45682 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVlDn-000137-1N for qemu-devel@archiver.kernel.org; Fri, 15 Nov 2019 18:41:47 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:35295) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVlDA-0000ch-SR for qemu-devel@nongnu.org; Fri, 15 Nov 2019 18:41:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iVlD9-0005Sp-SP for qemu-devel@nongnu.org; Fri, 15 Nov 2019 18:41:08 -0500 Received: from home.keithp.com ([63.227.221.253]:58898 helo=elaine.keithp.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iVlD9-0005SP-Ma for qemu-devel@nongnu.org; Fri, 15 Nov 2019 18:41:07 -0500 Received: from localhost (localhost [127.0.0.1]) by elaine.keithp.com (Postfix) with ESMTP id 71F243F29B26; Fri, 15 Nov 2019 15:41:04 -0800 (PST) X-Virus-Scanned: Debian amavisd-new at keithp.com Received: from elaine.keithp.com ([127.0.0.1]) by localhost (elaine.keithp.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id fT4qjkNEgsCj; Fri, 15 Nov 2019 15:41:04 -0800 (PST) Received: from keithp.com (unknown [172.58.45.253]) by elaine.keithp.com (Postfix) with ESMTPSA id C3F6D3F29B25; Fri, 15 Nov 2019 15:41:03 -0800 (PST) Received: by keithp.com (Postfix, from userid 1000) id 3C0B9158212B; Fri, 15 Nov 2019 15:40:59 -0800 (PST) From: "Keith Packard" To: Peter Maydell Subject: Re: [PATCH] Semihost SYS_READC implementation (v4) In-Reply-To: References: <89ada4b1-ee3d-a512-07c2-9bc1ba5806da@redhat.com> <20191024224622.12371-1-keithp@keithp.com> <8736fhm9tw.fsf@linaro.org> <87pnik4w9n.fsf@keithp.com> <87mudo4owu.fsf@keithp.com> <87r22at7po.fsf@keithp.com> Date: Fri, 15 Nov 2019 15:40:58 -0800 Message-ID: <87imnku2r9.fsf@keithp.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 63.227.221.253 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: Alex =?utf-8?Q?Benn?= =?utf-8?Q?=C3=A9e?= , Richard Henderson , QEMU Developers Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Peter Maydell writes: > It's on my queue to review if nobody else gets to it first, but since > we're in freeze right now it won't be landing til after the release > happens (expected mid-December). Thanks in advance! I'll get started pushing questions about the RISC-V semihosting ABI into that standard group and see if we can't at least have the existing situation clarified. I think at a minimum we need: 1) Explicit reference to the intended ARM API, with an explicit mapping between ARM architecture concepts to the ones used for RISC-V, especially for how arguments are passed. 2) Resolution of how to handle sequence which cross page boundaries. =2D-=20 =2Dkeith --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEw4O3eCVWE9/bQJ2R2yIaaQAAABEFAl3PN4oACgkQ2yIaaQAA ABH4IQ/6AugMYtN0MpZtZsrtTHcjS/88ei+CRC0qrTZjzTPF9Wj0/Ai76ila1y8K z5deL7dU+QcX5IDPh/cmOwmdL1kEzsJcIEuXzTwas7Fczl0+KpvnGbU9Ucr5DOjK D7ZIStBYEcJUgzyIdd85a+xPQ8AsFiF5tevnIUVlS1LJTxND8ul+4mAvCXeLBWwT c6YxHZwVHxVyNkBVrmAbnoJshuJ6fw9eOVF308ilX4F5HCGKLS7T4IzCwqsFL6BI sS8gXbWDZj12AAxZbzaZ5CLop1PTjrrZHfFa8Cvn/AvvsN7BoB5kfZcmHBcn2/bQ t39+JOzESCLeJ1HPCqHwC9gefxRqHYhFQWsraegGFB/0bGHgGOICKc6S/ex5HD9t U7mIvt6x7v8vximu1lFgOOCxXgHz6FIgygokv+ylrFdCteHJmuTIR5g2gvUkOx7V NzON8etFC0DSHs12cs6AEKPJW5cBNCI8JTw1qzGWSXFftWS7a7OZGF+wCeRPTGVK ctFHWrS5BqRw0L3jlriqprJdiR7WDHgi+n3PYyycDae5uJ0LEZTbl+54CtNQr/6o RhF7yM/wAuz6pItwmC8CxLydT+8qzYSeVDQamT6h201fkxt24L4vSlR+VDhMjtUd o/FDqEzLWHlYiT9LTc4itKSy0AGsA8+CBaOimZfL+otCKMOgq1w= =DEwE -----END PGP SIGNATURE----- --=-=-=--