From nobody Tue Apr 7 23:44:29 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=htecgroup.com); dmarc=pass(p=reject dis=none) header.from=htecgroup.com ARC-Seal: i=2; a=rsa-sha256; t=1773230549; cv=pass; d=zohomail.com; s=zohoarc; b=E0U3Ke2fEZktiw+urQz1tWnAdBsmr0dHECgoMWClOfxKTamn1BF1PA1oDtlIPMvGPvtILdUkdspbX+xGujKn5DFlPuohIjZHWhajlBG/C4wcsvwG/ltrTU4EdK09FOT45raT2ywjdzxrkkbz88t4zyIWT+l7rDbNg393l0yCDM0= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1773230549; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=TpZRMbEu+DbcxNsi0jFoqxmY97B3yL0FLW/gg070UHI=; b=kxpGNM8lrkNp0ZerSiqYdtDpI8fWCyVCIbhUoDBfYqDH8WCJne4w7JZuBDyQVSoNtkDhQweVg2Myc0pWZW/NVffIHquuyHnMg1tvDTgQA2I3CFYkJh7KoGxP2t4mCDsMsdVoqsqEpLfweaZTSNOAe7TqOOEPF1lVkilxSx5ClKk= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=htecgroup.com); dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1773230549629834.2566784923994; Wed, 11 Mar 2026 05:02:29 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w0IEH-0000Cl-2m; Wed, 11 Mar 2026 07:59:57 -0400 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 1w0IDu-0008G1-0T; Wed, 11 Mar 2026 07:59:36 -0400 Received: from mail-westeuropeazlp170110003.outbound.protection.outlook.com ([2a01:111:f403:c201::3] helo=AS8PR04CU009.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w0IDr-0004dU-O7; Wed, 11 Mar 2026 07:59:32 -0400 Received: from GV2PR09MB8755.eurprd09.prod.outlook.com (2603:10a6:150:358::6) by DU0PR09MB6069.eurprd09.prod.outlook.com (2603:10a6:10:407::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9678.25; Wed, 11 Mar 2026 11:59:19 +0000 Received: from GV2PR09MB8755.eurprd09.prod.outlook.com ([fe80::939c:95df:4890:ce63]) by GV2PR09MB8755.eurprd09.prod.outlook.com ([fe80::939c:95df:4890:ce63%3]) with mapi id 15.20.9700.010; Wed, 11 Mar 2026 11:59:19 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=aNHsScdhU+n5lQve/lGQJCVYbrxeCyGHWJtRxyi/0yHOtIb6AcFcnMveuAOqpbXY+CFsTn2n/PXTDT3HsOBUYMOfYuOfnCnxHe/0XsA4Avm6qWY07t/Vlbgcbx2jQAlSuIhaABO6UzzMElyAP0JNO5kKmy0GkBLEANLQZvZn450Ujo4Fww1uZwjBiirvfdfSYO10nuNYZjfLKrp43h31Cqx/OHM8d/xrPRnT0wFlhZqprDGui+XHS9b7To8NWf0IDYmCUG2hdXcjVQtwiHUxg5bj+TWjRVhNS08Wre3jTY8w4uW9jySdwdWOYUwMVK/d4aisePE+rVyMedxtlrqrRg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=TpZRMbEu+DbcxNsi0jFoqxmY97B3yL0FLW/gg070UHI=; b=kbeaBeNwpBNo/zwUKn7HqmmOa+LBv+PJQoOUh17w4jqe+wNHBrVcLmIbGNN1UtbpiiuhOK3lFXgtAqYzmKEEpA2Lw+v8eoYPk0TLalEChnDUmSywAoPtW1A/HN2OveaBXWpO1IhQ3MbqYKOj5VDuHrOQnvR9TO868lJiwrq7WeqPGp+qBRLjId8GYtVZha8pv2+vtzVJJDDwGvEqAoRei3l/ZLuryxfPzi8Nb3WLoTzNfxP8lznJMMST+ffYoUJKPbcTREHY0xIam1R3lNimh5CY/NZEyTeV4jDsDlFsJ9vTbnM7QfEJH8pbmMwcAo6V269TDvFVs//wZZmmG5YQ3Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=htecgroup.com; dmarc=pass action=none header.from=htecgroup.com; dkim=pass header.d=htecgroup.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=htecgroup.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=TpZRMbEu+DbcxNsi0jFoqxmY97B3yL0FLW/gg070UHI=; b=SGmZM1xJ2S1aJesMKdvjGFMxbVzSwI6dNBCPw7903OzG58ZMQvouzBY7Z/eaCZHWoyPobNzH3SCzcicm0d0D4FNSxEHaYkO5kZAgVPBifQpw95WsFuRiqSi/0ZlyJxlVSI0lLuB2vOE0GaMKewTXRH/JyIwSs4vixSpqxG/Cq3qn1u+5SOpRE6oMD//WYMOZ1NSIkyuF1QQOuciEqCdLSHBxsdZuT2EJlB7IHFvVyTaYHG3YHoMKHT93yJP2r/c4rUJ21ixcrGbl0fsqUeDcLuK9EdxGv3gb00bSSaJ7NVwmt+oc5EQw4Avsg9B1b9+pR+DwZy13aSbctBdoSXu+pg== From: Djordje Todorovic To: "qemu-devel@nongnu.org" CC: "qemu-riscv@nongnu.org" , "cfu@mips.com" , "mst@redhat.com" , "marcel.apfelbaum@gmail.com" , "dbarboza@ventanamicro.com" , "philmd@linaro.org" , "alistair23@gmail.com" , "thuth@redhat.com" , Djordje Todorovic Subject: [PATCH v3 4/9] target/riscv: Set endianness MSTATUS bits at CPU reset Thread-Topic: [PATCH v3 4/9] target/riscv: Set endianness MSTATUS bits at CPU reset Thread-Index: AQHcsU5967JdqHXbmECHWiSK6MnYgw== Date: Wed, 11 Mar 2026 11:59:18 +0000 Message-ID: <20260311115910.564481-5-djordje.todorovic@htecgroup.com> References: <20260311115910.564481-1-djordje.todorovic@htecgroup.com> In-Reply-To: <20260311115910.564481-1-djordje.todorovic@htecgroup.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=htecgroup.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: GV2PR09MB8755:EE_|DU0PR09MB6069:EE_ x-ms-office365-filtering-correlation-id: fe46bcbc-c589-4ef5-fedf-08de7f65a05d x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; ARA:13230040|376014|366016|1800799024|38070700021|18002099003|22082099003|56012099003; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:GV2PR09MB8755.eurprd09.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(376014)(366016)(1800799024)(38070700021)(18002099003)(22082099003)(56012099003); DIR:OUT; SFP:1102; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?iso-8859-1?Q?0+lkIFTs0ao9FvuYLLGdS0Fn3dis2tlSjRGw8GS063txhI7g0u1qJhocCO?= =?iso-8859-1?Q?sPFVJQptOuLSBiyvIKcF67kdqWaAEA9rrOQiR5ub+lCB9od/TOMU0JamrV?= =?iso-8859-1?Q?2Fq3bcFVeFGAZllK74iQs8QgTSdbCnI7ck1aG8lSoEeFbE1psDKtJW38NW?= =?iso-8859-1?Q?6iwBK+v4nphXuLgj/YqM2oUevOiN5MfPnBlrCErZSuJ5/CeSg2q44TS9pV?= =?iso-8859-1?Q?LEdk+ybU2PQHJVK2bjCaRS+jCfs4XCSdMy78rS4njrWgAzlimoDxUlPQJj?= =?iso-8859-1?Q?zX2uYUbWEfQmoxjgEtXyxZvsSlIlroU3ZWr9hUxPDLmYOq4NnmcWUYvFlP?= =?iso-8859-1?Q?x9uaqGtrjfPgWOy0/+7CbYvOsTXCGEr6wOZ9r29q5l/I18BXUGas/01ybe?= =?iso-8859-1?Q?Wplb+sUYPbK4/olWIksJhmow+niPTc+WTqmEAQ6aajvn4E8G8cJ3fvy6PZ?= =?iso-8859-1?Q?MTftEwBdNvXaZi1yXNg05o1WjRbwm/fRV2l/S1IfRunD7NjcSMp5FEuB7x?= =?iso-8859-1?Q?1UJh5gUwZ0RGwED+DhLGcqQUJcL5SLr4/LAB2nGcKnu/5ovQ/c3bSKCxFI?= =?iso-8859-1?Q?kc+SmoHy4GwFFMczq/wY6sJKHSEX42vQpyR5suqkwOqt7d2cop74MHnS1s?= =?iso-8859-1?Q?JlQHi1WPXdjD9swM6eO/+aHcmxC5524/DsiGzt3xeFVSkfJnaE/73MDtBA?= =?iso-8859-1?Q?iv2EhpYlvDSXeX+vJKQwM6WZU3qynfByIdXIaegs0LzwflAqHaHKvi9Gch?= =?iso-8859-1?Q?go/Rh1Q/Fvcc/1JSBzzFttLiG0/Phs8Y57x3QzWnUhQ/SOYeBlH9qrm0qr?= =?iso-8859-1?Q?+pPZanGKReFSzBpfMy/QhCZWmA1fVInT06PnwNT0Wtjbr8A5Akz5rJJD7Q?= =?iso-8859-1?Q?xFtxdfgQdDHGSiSxDRxDxSPTo4OpCsReKKSIeSuj73mk9xcZj1NbWAXA8H?= =?iso-8859-1?Q?heEjfEYALaI/T6Ne4Ihex120/SD2lbnVUJGiGYj2PDGfZ1NvMQXECshIMm?= =?iso-8859-1?Q?40iNEdtPUXHMG2mNENLZWJypgaTexIZYk8xrjYN4x8At5xY4jxhE53fAUl?= =?iso-8859-1?Q?gQOnKZjqTAj7ZxyurWrNnXw6xm616gYzlSjosSkCIjVipvcgZlhNLNm4bK?= =?iso-8859-1?Q?DP9CvdrtiMc0R8RLDuEDO0pSvb2UbSlFhq0IysPIY//Ml9xwiUIFgaE6rx?= =?iso-8859-1?Q?j21R3XAbXwYQtsMXksAXUir7SLryzLNGuN8EMJLxrrHPJctqha5NAkWyQb?= =?iso-8859-1?Q?afk2j+oJtCAEP/8dHWYKnQesGL7PfgXTufkNViOQXEgOczT7owVeU/3OIO?= =?iso-8859-1?Q?MsRbSlRUuJk0GHE5m3uJEFHRFT1yMb+TGbzTmyYhJ9BoOF08OOSDbuJQE/?= =?iso-8859-1?Q?CsLXTa6rFG7Yg1xJGb+ukXlqsroa6A/7l75Gilyyp1E/3J9c4YJBiJcb5u?= =?iso-8859-1?Q?hfLC0amNvNPQ6RT4/8qKzT3gQ8GEXdDWKaTY/H1sdn3RBztERG81FW2Y3O?= =?iso-8859-1?Q?gbfCQ0JyjwGbkJwevhGFhxuFt2KZzBbOzbthRhAYJETEiE+4DWtgqCLLOG?= =?iso-8859-1?Q?X/jguer6KSKTs3z/um/D4rXU8OtYkqXsgL5BtzZnyAepyT0F/WTvzPhn7c?= =?iso-8859-1?Q?txrkQ/mAWsCc3oiZLXgHQKA8FQjfoYWXzknoyI4DqoDudx0GnTrtorZQ17?= =?iso-8859-1?Q?v0zGgcsWgqehjiKoaLkS/dBoYcjmkfHk5EbksbrNVCmOhq5J+FMfiSmJXU?= =?iso-8859-1?Q?tlmgFPp/4F1Fd/4d57/39KW/LLUZEqe0K6DHEX4gP2NQlcrhkZtj+NdLPJ?= =?iso-8859-1?Q?9dvjvdyPLCWqePDqVQNpjdpm1FYmcW4NvuHbRvwMexDqQS47hyCZ?= Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: htecgroup.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: GV2PR09MB8755.eurprd09.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: fe46bcbc-c589-4ef5-fedf-08de7f65a05d X-MS-Exchange-CrossTenant-originalarrivaltime: 11 Mar 2026 11:59:18.3232 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 9f85665b-7efd-4776-9dfe-b6bfda2565ee X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: bY9olr6Sw+nwnZBx3N84Bij/WG+yEVzuauWX3nvBynxwv523TfomPx2Sgw1BvT5mVvWQKCUnIIsbXECzT485PGlgDvEsJfbe+yxgHBtDokU= X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR09MB6069 Received-SPF: pass (zohomail.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; Received-SPF: pass client-ip=2a01:111:f403:c201::3; envelope-from=Djordje.Todorovic@htecgroup.com; helo=AS8PR04CU009.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @htecgroup.com) X-ZM-MESSAGEID: 1773230551241154100 Content-Type: text/plain; charset="utf-8" When the big-endian CPU property is enabled, set the MSTATUS_UBE (User Big-Endian), MSTATUS_SBE (Supervisor Big-Endian), and MSTATUS_MBE (Machine Big-Endian) bits during CPU reset. This configures all privilege levels for big-endian data access, matching the RISC-V privileged specification's endianness control mechanism. Instructions remain little-endian regardless. Also update the disassembler comment to clarify that BFD_ENDIAN_LITTLE is correct because RISC-V instructions are always little-endian per the ISA specification. --- target/riscv/cpu.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 305a8d73ad..4e5781ff04 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -717,6 +717,9 @@ static void riscv_cpu_reset_hold(Object *obj, ResetType= type) env->mstatus =3D set_field(env->mstatus, MSTATUS_MDT, 1); } } + if (cpu->cfg.big_endian) { + env->mstatus |=3D MSTATUS_UBE | MSTATUS_SBE | MSTATUS_MBE; + } env->mcause =3D 0; env->miclaim =3D MIP_SGEIP; env->pc =3D env->resetvec; @@ -804,11 +807,8 @@ static void riscv_cpu_disas_set_info(const CPUState *s= , disassemble_info *info) info->target_info =3D &cpu->cfg; =20 /* - * A couple of bits in MSTATUS set the endianness: - * - MSTATUS_UBE (User-mode), - * - MSTATUS_SBE (Supervisor-mode), - * - MSTATUS_MBE (Machine-mode) - * but we don't implement that yet. + * RISC-V instructions are always little-endian, regardless of the + * data endianness configured via MSTATUS UBE/SBE/MBE bits. */ info->endian =3D BFD_ENDIAN_LITTLE; =20 --=20 2.34.1