From patchwork Sat Feb 24 13:02:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Demin Han X-Patchwork-Id: 1903847 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Thpy324v9z23d2 for ; Sun, 25 Feb 2024 01:23:07 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rdsvU-0001O2-Pc; Sat, 24 Feb 2024 09:22:52 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rdrgA-0002wY-6d; Sat, 24 Feb 2024 08:02:58 -0500 Received: from mail-sh0chn02on20711.outbound.protection.partner.outlook.cn ([2406:e500:4420:2::711] helo=CHN02-SH0-obe.outbound.protection.partner.outlook.cn) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rdrg8-0001VP-1w; Sat, 24 Feb 2024 08:02:57 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Uf6WtkmWpu9Ohem9XfTM1NhO/5Q5wz9OxY0rVk39prpNyXcSAx3ZjI8OoJIZo55KLGs8Z3/ttXjV/t65MiEiynnO5m2Mn3eadu3YYwMloDpSib6XfKCXyV/VUEQFtri4rkDFs6Jy0v13chGthxHpET32VFQQZFk5BcGIu14GE9F/TQJcaGhHGm7rObayoSm3HUIYz4+0IM/EOOuTZKaG0a5nJMrLutI5uugbqDDkWWHGOvcgFY1ZTw+5Nv2ttFlLTzm+ZH/LcWbdEyK/p1hSdAvYC2ZlRV22Epts+VydAg9vnOdAPV6LoxS2VcCFXac1yKdTJjCPByObSTGLoatd3Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=cWauh5qbR7+5H40NhmX90nMlGZMSJkHhCWDRtBrFsaQ=; b=HmKx9NkTm5qU2oKyXhcwSYVCD4VA3KXWIkm6oi6B6KUDetvFztwDU/PKBhSEm0IqQPqZP7DVd9I1V2nYjp4uuw+y8pxOGeuegZijvzinG5YNbWz2+q9q5nmyMlWO2NskY55W9PLZX/4gO+RmeDngtIXIF9z+BUHTztXYQPAo0mffWRACOySf3ArOKS4nB4U9zMmjdHo8IguH9vpFJRjYup+aoAOjcpZZ0cR4UDJ0Ra7Fg7ZQC9VwDzs5Dfni3qf70mZ5m4yk/452x9S2/vAd+9V8ZzEMInAAOeNfbkj4YsoYAyE/RZmBma2O6xpo/k85wMOastadBmag03FV6dR1hA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=starfivetech.com; dmarc=pass action=none header.from=starfivetech.com; dkim=pass header.d=starfivetech.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=starfivetech.com; Received: from ZQ0PR01MB1063.CHNPR01.prod.partner.outlook.cn (2406:e500:c550:d::13) by ZQ0PR01MB1319.CHNPR01.prod.partner.outlook.cn (2406:e500:c550:1c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7270.47; Sat, 24 Feb 2024 13:02:43 +0000 Received: from ZQ0PR01MB1063.CHNPR01.prod.partner.outlook.cn ([fe80::21d1:48e1:7ca0:1d76]) by ZQ0PR01MB1063.CHNPR01.prod.partner.outlook.cn ([fe80::21d1:48e1:7ca0:1d76%4]) with mapi id 15.20.7270.047; Sat, 24 Feb 2024 13:02:43 +0000 From: "demin.han" To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, dbarboza@ventanamicro.com, alistair.francis@wdc.com Subject: [PATCH] target/riscv: Fix shift count overflow Date: Sat, 24 Feb 2024 21:02:35 +0800 Message-ID: <20240224130235.340584-1-demin.han@starfivetech.com> X-Mailer: git-send-email 2.43.2 X-ClientProxiedBy: NT0PR01CA0027.CHNPR01.prod.partner.outlook.cn (2406:e500:c510:c::20) To ZQ0PR01MB1063.CHNPR01.prod.partner.outlook.cn (2406:e500:c550:d::13) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: ZQ0PR01MB1063:EE_|ZQ0PR01MB1319:EE_ X-MS-Office365-Filtering-Correlation-Id: 13792232-4dff-4275-0093-08dc3538e393 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: RFhmKHqpxBsnSEWqt/oPJwIL9231b+dYKGSlcneo0aiOM/qAYeTBVyfV+jOk6gAtY3Wbi+TuPzsvPDxJizaL2YFRawz3+aetCi8ShelRsfWKNF5JSv1uvyFKyNrx0ersQHm0q1qhEekkDzsaZWjwztf+rt+BsafUupao50k0h1JLLPAmsalb06dH21tdRkggckp34H02mNgC8ymbf7toq2X5VA+5Rf7kTt+Afa0yr7y/3rbpmasjlP9ZBXdESPpf2B34EXOqt/OaFrzRjyFbTrOQDQR+DG2eh+ITxLQalA9c3oNqagv7uQcF2RjHvzx1XIjAWRugVYCTbtz2el0C+SdmCBDTJrW7IJkoFK3hPWahoL+3yadE+Wvkkh8AyyE7vEc9ylNodvj7H3/XePkbPDRqf/IOjxp/e1MZiLBKLAbvTKfTZ9pIk87SzEkh6RtPN2JoQJP+Y6xqbCoQzqx8xodA/qCROerPZUA+ee1AztrxxN9yngPHSenZm4kqt8wT9osXHHE7QMllzHU8Aiqih3zCPY206O6n9bYcN2qJ6+lU70VwLaHFiQZqS6+goVYN X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:ZQ0PR01MB1063.CHNPR01.prod.partner.outlook.cn; PTR:; CAT:NONE; SFS:(13230031)(38350700005); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: starfivetech.com X-MS-Exchange-CrossTenant-Network-Message-Id: 13792232-4dff-4275-0093-08dc3538e393 X-MS-Exchange-CrossTenant-AuthSource: ZQ0PR01MB1063.CHNPR01.prod.partner.outlook.cn X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2024 13:02:43.5363 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 06fe3fa3-1221-43d3-861b-5a4ee687a85c X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: D6EI5SbmX0bAdmoduyoME5NqCdijP0s8SQogQr2QTPmLuXhCOjhDuQPp1MCKvyRw71Mb927bqC4VceghIpG3TWXii1+cSou4sQ7j+LTmXGs= X-MS-Exchange-Transport-CrossTenantHeadersStamped: ZQ0PR01MB1319 Received-SPF: pass client-ip=2406:e500:4420:2::711; envelope-from=demin.han@starfivetech.com; helo=CHN02-SH0-obe.outbound.protection.partner.outlook.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Sat, 24 Feb 2024 09:22:42 -0500 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The result of (8 - 3 - vlmul) is negtive when vlmul >= 6, and results in wrong vill. Signed-off-by: demin.han --- target/riscv/vector_helper.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 84cec73eb2..ced0aca633 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -53,10 +53,9 @@ target_ulong HELPER(vsetvl)(CPURISCVState *env, target_ulong s1, * VLEN * LMUL >= SEW * VLEN >> (8 - lmul) >= sew * (vlenb << 3) >> (8 - lmul) >= sew - * vlenb >> (8 - 3 - lmul) >= sew */ if (vlmul == 4 || - cpu->cfg.vlenb >> (8 - 3 - vlmul) < sew) { + (cpu->cfg.vlenb << 3) >> (8 - vlmul) < sew) { vill = true; } }