From patchwork Fri Dec 8 16:32:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Szabolcs Nagy X-Patchwork-Id: 81756 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id E6A013858285 for ; Fri, 8 Dec 2023 16:33:23 +0000 (GMT) X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from EUR01-HE1-obe.outbound.protection.outlook.com (mail-he1eur01on2081.outbound.protection.outlook.com [40.107.13.81]) by sourceware.org (Postfix) with ESMTPS id B9C83385AC22 for ; Fri, 8 Dec 2023 16:32:54 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org B9C83385AC22 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=arm.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org B9C83385AC22 Authentication-Results: server2.sourceware.org; arc=pass smtp.remote-ip=40.107.13.81 ARC-Seal: i=3; a=rsa-sha256; d=sourceware.org; s=key; t=1702053176; cv=pass; b=ByCTLnxdUQqaorquBqUFdr9v3MlGQpI5R9z3CmMCmB+KDmEL8g2ODqqJCHnFDc5ZFegxMG2WVBFK34ibQTTaikzQklCKBAomgDXKcM2zoGBrZgkIbpJVOJRpLWKplGIoCa7tw/f01OQJbdyKgxcns2nYenvTS9nUNc0L8U+bv6k= ARC-Message-Signature: i=3; a=rsa-sha256; d=sourceware.org; s=key; t=1702053176; c=relaxed/simple; bh=E6TuMv8fVjNDvp7Os45R/9rRddgo4OL+2JWK+Yb30Gc=; h=DKIM-Signature:DKIM-Signature:From:To:Subject:Date:Message-ID: MIME-Version; b=U2tJH8hSro2KU8yfAiHZ6XPIp3Wr/w3HMCFocdicsFXRRBZRKVj/uZMfDJ/kvGUj8S3gnVCMs1ad7oYXwdLy2PEEJzjSHQmlGIb4f3pMm/38XojWY8GXc7/+KlnraWbkRs1LOQzfoV5t+tr7Rzxw0B84RuB5+RVg33jhvXhXAvY= ARC-Authentication-Results: i=3; server2.sourceware.org ARC-Seal: i=2; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=pass; b=GWz5S1NSVYxRzpnPIZRpQk1neUOznM1UdQFnSXIlt2sQfBn1xq3FfD43gZwU9uVH9a2lLV1XMehk9+4LcCZP4KG0lOvxPrMM254DAkYuNCbCSlRiPiGWM4rN6hwmj/wej3eu2Xgdu9pv5HFdo/M68DFUJKZd3qwVQe3h5sBxxrGw5QtEjsiy9lhbzKrSzp7OVvqh/zMQv38KwvcQvU0R1l6Cqr1NlaLL8Jw6OVpP1dl/Yy8YezaUyCjnzpTyG7AUKumqRGEBoRGq3jdO/HETv/ImFSDscx1s7TJf+dVM5OgeSiZ/i47D3D9t7OZFdItyVen2X3rGkbb6pOJtQEoYHA== ARC-Message-Signature: i=2; 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=UdELP0QAUY+4QT6rLmd+uO6TBrq2DeeEvNCEQKaqLQE=; b=Nu7EnltyyEg9j3Y4W7Q7Wiw+MbpOk4vAH1NtPuo3FE6rd9l4/NVu8S5tk+f+VC7cx+BcZPFZEQOg80OCtX8YwB1ckW/7umEio3h/ZaxY1BfkBLdvlk1cJmS9NtHV8Y3L1vcq2juuysESHHW+YWaNha20MIGD028cGwRf8zV5pu9TB01jFM17+DJ9/KyfcbC90Q6spZ9Hq6aXgNvTCsTcqYud6dksP7Vwd8ioVusVK/5KNHFpTbH0I5fRVYfxGmNXWmdibtdt3HAyUGfZlbaZkpwcpbsQcO5hCF3F7iiGLS2Ju9rZiyxJzp+us+UVq4bU39dejmd8BDHbE5tB7Ays6w== ARC-Authentication-Results: i=2; mx.microsoft.com 1; spf=pass (sender ip is 63.35.35.123) smtp.rcpttodomain=sourceware.org smtp.mailfrom=arm.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=arm.com; dkim=pass (signature was verified) header.d=armh.onmicrosoft.com; arc=pass (0 oda=1 ltdi=1 spf=[1, 1, smtp.mailfrom=arm.com] dmarc=[1, 1, header.from=arm.com]) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector2-armh-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=UdELP0QAUY+4QT6rLmd+uO6TBrq2DeeEvNCEQKaqLQE=; b=QS2P9k4lXNqxctA3hb1I8g7bqmTyZADjA3YFpevUCln391H6rnJuRAGGXdYddAmrtOBJfaBMA88L2Chm2Sea83XfU7rsXMezhD8BIFlKPz3BhQyvNmixLemzGYGDU/gV+4sHhdtVDQDtg0yUJ/8RqOuGQw3JHlIO9oRVTeMRLMg= Received: from DU2PR04CA0220.eurprd04.prod.outlook.com (2603:10a6:10:2b1::15) by DU0PR08MB8164.eurprd08.prod.outlook.com (2603:10a6:10:3ef::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7068.28; Fri, 8 Dec 2023 16:32:50 +0000 Received: from DB5PEPF00014B94.eurprd02.prod.outlook.com (2603:10a6:10:2b1:cafe::2c) by DU2PR04CA0220.outlook.office365.com (2603:10a6:10:2b1::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7068.25 via Frontend Transport; Fri, 8 Dec 2023 16:32:50 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 63.35.35.123) smtp.mailfrom=arm.com; dkim=pass (signature was verified) header.d=armh.onmicrosoft.com;dmarc=pass action=none header.from=arm.com; Received-SPF: Pass (protection.outlook.com: domain of arm.com designates 63.35.35.123 as permitted sender) receiver=protection.outlook.com; client-ip=63.35.35.123; helo=64aa7808-outbound-1.mta.getcheckrecipient.com; pr=C Received: from 64aa7808-outbound-1.mta.getcheckrecipient.com (63.35.35.123) by DB5PEPF00014B94.mail.protection.outlook.com (10.167.8.232) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7068.20 via Frontend Transport; Fri, 8 Dec 2023 16:32:50 +0000 Received: ("Tessian outbound 20615a7e7970:v228"); Fri, 08 Dec 2023 16:32:50 +0000 X-CheckRecipientChecked: true X-CR-MTA-CID: 141cef550b73624e X-CR-MTA-TID: 64aa7808 Received: from 5e72deb117d5.1 by 64aa7808-outbound-1.mta.getcheckrecipient.com id 2455237E-C712-4C2C-9800-98304CF2A438.1; Fri, 08 Dec 2023 16:32:43 +0000 Received: from EUR02-VI1-obe.outbound.protection.outlook.com by 64aa7808-outbound-1.mta.getcheckrecipient.com with ESMTPS id 5e72deb117d5.1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384); Fri, 08 Dec 2023 16:32:43 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=MQ6XlYzwRLchvyKCF56N7/Hb77ZC62olMny5p59knzUSRMW+YlIvGo8MAcx4GbrkJqsrXaKyj7I9jVtbN/ofNsLpeVAhfFpj3fsar7K/ToWDKUhjy84BU/GvoibzjpVt/siURLArbMWwYy0rUg0s30lsbmVLhBWv4pxuV443EkgoOqw3BtvCEnCRtP2pk9IszOE25ru+4/w0OlEld16DVnEgAQfNWB5p1MnGDDMQ2s6CnFXjg9CG7AAsj6JYoLLGi2M5qBEmL42NyWQdAk33RNDFMcR1M65LK6Jr3MelxwWNLGMIOYnrc0AAutqVH/78Z01nLNYycQ7jP1I+SOualg== 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=UdELP0QAUY+4QT6rLmd+uO6TBrq2DeeEvNCEQKaqLQE=; b=m5tyAylj2wH4MbhyISDEKuRA6w60L2QuIbWyPoZNHfj7kyrCQgpnVnrFTIJGdJxkWY7t/VMvMl0ZdTskw7zaR6ue0GMckDSGHy870MkmX21m5FuZYlL+JN6xFwUccg67ARXiyQQk9JV0/LI8VyyV2fS0VNzJWtSxY8IawHXYhHBKZRyl33b1RjNO7Aijg7Nr/nBvLkIcOwkezRmKKvK1jKS9U3W2mRLm1VkA+LzNpoM4ekcDY6LzduFR5HlIIQnTr8Wzr7PW36QwRsQoI9N5xwmMKCKJ1hEGXWDyQ52klXO3D/b/P0eC0/zlIFCnrebYS3sCWvnJDHtgnHtvUF6H7A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 40.67.248.234) smtp.rcpttodomain=sourceware.org smtp.mailfrom=arm.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=arm.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector2-armh-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=UdELP0QAUY+4QT6rLmd+uO6TBrq2DeeEvNCEQKaqLQE=; b=QS2P9k4lXNqxctA3hb1I8g7bqmTyZADjA3YFpevUCln391H6rnJuRAGGXdYddAmrtOBJfaBMA88L2Chm2Sea83XfU7rsXMezhD8BIFlKPz3BhQyvNmixLemzGYGDU/gV+4sHhdtVDQDtg0yUJ/8RqOuGQw3JHlIO9oRVTeMRLMg= Received: from AM5PR0101CA0001.eurprd01.prod.exchangelabs.com (2603:10a6:206:16::14) by DU0PR08MB7542.eurprd08.prod.outlook.com (2603:10a6:10:321::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7068.27; Fri, 8 Dec 2023 16:32:41 +0000 Received: from AMS0EPF000001B7.eurprd05.prod.outlook.com (2603:10a6:206:16:cafe::ad) by AM5PR0101CA0001.outlook.office365.com (2603:10a6:206:16::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7046.34 via Frontend Transport; Fri, 8 Dec 2023 16:32:41 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 40.67.248.234) smtp.mailfrom=arm.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=arm.com; Received-SPF: Pass (protection.outlook.com: domain of arm.com designates 40.67.248.234 as permitted sender) receiver=protection.outlook.com; client-ip=40.67.248.234; helo=nebula.arm.com; pr=C Received: from nebula.arm.com (40.67.248.234) by AMS0EPF000001B7.mail.protection.outlook.com (10.167.16.171) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7068.20 via Frontend Transport; Fri, 8 Dec 2023 16:32:40 +0000 Received: from AZ-NEU-EX03.Arm.com (10.251.24.31) by AZ-NEU-EX03.Arm.com (10.251.24.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.32; Fri, 8 Dec 2023 16:32:40 +0000 Received: from armchair.cambridge.arm.com (10.2.80.71) by mail.arm.com (10.251.24.31) with Microsoft SMTP Server id 15.1.2507.32 via Frontend Transport; Fri, 8 Dec 2023 16:32:40 +0000 From: Szabolcs Nagy To: Subject: [PATCH 4/4] aarch64: Add longjmp test for SME Date: Fri, 8 Dec 2023 16:32:40 +0000 Message-ID: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 X-EOPAttributedMessage: 1 X-MS-TrafficTypeDiagnostic: AMS0EPF000001B7:EE_|DU0PR08MB7542:EE_|DB5PEPF00014B94:EE_|DU0PR08MB8164:EE_ X-MS-Office365-Filtering-Correlation-Id: 8fa7e464-616c-4d2f-2122-08dbf80b51ae x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0; X-Microsoft-Antispam-Message-Info-Original: 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 X-Forefront-Antispam-Report-Untrusted: CIP:40.67.248.234; CTRY:IE; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:nebula.arm.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230031)(4636009)(346002)(376002)(396003)(136003)(39860400002)(230922051799003)(186009)(1800799012)(64100799003)(451199024)(82310400011)(46966006)(40470700004)(36840700001)(44832011)(70206006)(36860700001)(40480700001)(478600001)(70586007)(356005)(8936002)(82740400003)(8676002)(26005)(316002)(2616005)(336012)(6916009)(7696005)(426003)(81166007)(5660300002)(86362001)(40460700003)(2906002)(41300700001)(83380400001)(47076005)(36756003)(2004002)(36900700001); DIR:OUT; SFP:1101; X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR08MB7542 X-MS-Exchange-Transport-CrossTenantHeadersStripped: DB5PEPF00014B94.eurprd02.prod.outlook.com X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id-Prvs: 473fc288-0dd4-4c60-161b-08dbf80b4c39 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 9JAzvV1pPlrZHXJbC6MNg89kTEk8YOfP7GTFkcSBTjIUXenSEztgsjM1rTpsU6ovfYV+rasCjd7UOZoiUtBsVL3YPMXv9Di5cr+61cTEqOZ+xwIovlM2/gnxJLwCCKtZI2IU5LKFqsrZ28a2CTQOdczGUdS/0ENT39cMPjLcXEOvwNhlROSrN3/qm8hONmokwDxGDO/W5Lci+bjwfVc4vsDWWk5yYuqOd4Wg475QXhfcVhGqdtkuey0NGhlxw+E07BTs8zNOvoLVbv6fqj++B47t4XLU3uGOhrfzRQoQsu3a92WvA3wlwfEVf9bCp4SygO0PcDu/pJp//+0V8mUZIZ0CUqL+eD04iWGL6iCC6C/clfTZy9+FTA+YtgkPyM715/f8QgJy2tTErUSjP+BA6WMIS+3SszfKY9NZszEsdj2dBdqsmC0aqeYuWWIccqAd4pvsHoqS5bo/pSr65CZ4L2eyirL1HCzRMgHAOJ7PDHK8Tk9z5DR7R4Ix4klYGpoK4sYji/JtWMaidJ9S1dowVmdK/UHnARLYIPz9cewwTpCayxgBhWx7CpoQuOhowkBzgtl8COW9PFp4lIzd9SAsnYZLWCOGn/1JqvbJ2YEWnkXTFSPQmm7Dizr0sWbkVU4lcmew//2lr6afMX0GDTHTS3KhcuuUhj1k2rtOWn6vvXVk2H2Ve9AJ7bIEII6LXj5YKrHYgVF+fL/EwZmsdb+g061nok5FQpMnpf5L9w1r216e2Qf8TVnqcxGLyHQGwBL7 X-Forefront-Antispam-Report: CIP:63.35.35.123; CTRY:IE; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:64aa7808-outbound-1.mta.getcheckrecipient.com; PTR:ec2-63-35-35-123.eu-west-1.compute.amazonaws.com; CAT:NONE; SFS:(13230031)(4636009)(396003)(376002)(136003)(39860400002)(346002)(230922051799003)(64100799003)(451199024)(1800799012)(186009)(82310400011)(46966006)(40470700004)(36840700001)(478600001)(44832011)(36860700001)(82740400003)(7696005)(26005)(5660300002)(336012)(86362001)(70206006)(316002)(6916009)(70586007)(40480700001)(2616005)(8676002)(8936002)(426003)(40460700003)(2906002)(83380400001)(41300700001)(36756003)(81166007)(47076005)(2004002); DIR:OUT; SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Dec 2023 16:32:50.1752 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8fa7e464-616c-4d2f-2122-08dbf80b51ae X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DB5PEPF00014B94.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR08MB8164 X-Spam-Status: No, score=-11.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, FORGED_SPF_HELO, GIT_PATCH_0, KAM_DMARC_NONE, KAM_SHORT, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY 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: libc-alpha@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Includes test for setcontext too. The test directly checks after longjmp if ZA got disabled and the ZA contents got saved following the lazy saving scheme. It does not use ACLE code to verify that gcc can interoperate with glibc. Reviewed-by: Adhemerval Zanella --- sysdeps/aarch64/Makefile | 3 + sysdeps/aarch64/tst-sme-jmp.c | 278 ++++++++++++++++++++++++++++++++++ 2 files changed, 281 insertions(+) create mode 100644 sysdeps/aarch64/tst-sme-jmp.c diff --git a/sysdeps/aarch64/Makefile b/sysdeps/aarch64/Makefile index 9d8844d9c8..141d7d9cc2 100644 --- a/sysdeps/aarch64/Makefile +++ b/sysdeps/aarch64/Makefile @@ -68,6 +68,9 @@ sysdep_routines += \ __mtag_tag_zero_region \ __mtag_tag_region \ __arm_za_disable + +tests += \ + tst-sme-jmp endif ifeq ($(subdir),malloc) diff --git a/sysdeps/aarch64/tst-sme-jmp.c b/sysdeps/aarch64/tst-sme-jmp.c new file mode 100644 index 0000000000..08dd291b0c --- /dev/null +++ b/sysdeps/aarch64/tst-sme-jmp.c @@ -0,0 +1,278 @@ +/* Test for SME longjmp. + Copyright (C) 2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include +#include +#include +#include +#include +#include +#include +#include + +struct blk { + void *za_save_buffer; + uint16_t num_za_save_slices; + char __reserved[6]; +}; + +static unsigned long svl; +static uint8_t *za_orig; +static uint8_t *za_dump; +static uint8_t *za_save; + +static unsigned long +get_svl (void) +{ + register unsigned long x0 asm ("x0"); + asm volatile ( + ".inst 0x04bf5820 /* rdsvl x0, 1 */\n" + : "=r" (x0)); + return x0; +} + +/* PSTATE.ZA = 1, set ZA state to active. */ +static void +start_za (void) +{ + asm volatile ( + ".inst 0xd503457f /* smstart za */"); +} + +/* Read SVCR to get SM (bit0) and ZA (bit1) state. */ +static unsigned long +get_svcr (void) +{ + register unsigned long x0 asm ("x0"); + asm volatile ( + ".inst 0xd53b4240 /* mrs x0, svcr */\n" + : "=r" (x0)); + return x0; +} + +/* Load data into ZA byte by byte from p. */ +static void __attribute__ ((noinline)) +load_za (const void *p) +{ + register unsigned long x15 asm ("x15") = 0; + register unsigned long x16 asm ("x16") = (unsigned long)p; + register unsigned long x17 asm ("x17") = svl; + + asm volatile ( + ".inst 0xd503437f /* smstart sm */\n" + ".L_ldr_loop:\n" + ".inst 0xe1006200 /* ldr za[w15, 0], [x16] */\n" + "add w15, w15, 1\n" + ".inst 0x04305030 /* addvl x16, x16, 1 */\n" + "cmp w15, w17\n" + "bne .L_ldr_loop\n" + ".inst 0xd503427f /* smstop sm */\n" + : "+r"(x15), "+r"(x16), "+r"(x17)); +} + +/* Set tpidr2 to BLK. */ +static void +set_tpidr2 (struct blk *blk) +{ + register unsigned long x0 asm ("x0") = (unsigned long)blk; + asm volatile ( + ".inst 0xd51bd0a0 /* msr tpidr2_el0, x0 */\n" + :: "r"(x0) : "memory"); +} + +/* Returns tpidr2. */ +static void * +get_tpidr2 (void) +{ + register unsigned long x0 asm ("x0"); + asm volatile ( + ".inst 0xd53bd0a0 /* mrs x0, tpidr2_el0 */\n" + : "=r"(x0) :: "memory"); + return (void *) x0; +} + +static void +print_data(const char *msg, void *p) +{ + unsigned char *a = p; + printf ("%s:\n", msg); + for (int i = 0; i < svl; i++) + { + printf ("%d: ", i); + for (int j = 0; j < svl; j++) + printf("%02x,", a[i*svl+j]); + printf("\n"); + } + printf(".\n"); + fflush (stdout); +} + +__attribute__ ((noinline)) +static void +do_longjmp (jmp_buf env) +{ + longjmp (env, 1); +} + +__attribute__ ((noinline)) +static void +do_setcontext (const ucontext_t *p) +{ + setcontext (p); +} + +static void +longjmp_test (void) +{ + unsigned long svcr; + jmp_buf env; + void *p; + int r; + struct blk blk = {za_save, svl, {0}}; + + printf ("longjmp test:\n"); + p = get_tpidr2 (); + printf ("initial tp2 = %p\n", p); + if (p != NULL) + FAIL_EXIT1 ("tpidr2 is not initialized to 0"); + svcr = get_svcr (); + if (svcr != 0) + FAIL_EXIT1 ("svcr != 0: %lu", svcr); + set_tpidr2 (&blk); + start_za (); + load_za (za_orig); + + print_data ("za save space", za_save); + p = get_tpidr2 (); + printf ("before setjmp: tp2 = %p\n", p); + if (p != &blk) + FAIL_EXIT1 ("tpidr2 is not set to BLK %p", (void *)&blk); + if (setjmp (env) == 0) + { + p = get_tpidr2 (); + printf ("before longjmp: tp2 = %p\n", p); + if (p != &blk) + FAIL_EXIT1 ("tpidr2 is clobbered"); + do_longjmp (env); + FAIL_EXIT1 ("longjmp returned"); + } + p = get_tpidr2 (); + printf ("after longjmp: tp2 = %p\n", p); + if (p != NULL) + FAIL_EXIT1 ("tpidr2 is not set to 0"); + svcr = get_svcr (); + if (svcr != 0) + FAIL_EXIT1 ("svcr != 0: %lu", svcr); + print_data ("za save space", za_save); + r = memcmp (za_orig, za_save, svl*svl); + if (r != 0) + FAIL_EXIT1 ("saving za failed"); +} + +static void +setcontext_test (void) +{ + volatile int setcontext_done = 0; + unsigned long svcr; + ucontext_t ctx; + void *p; + int r; + struct blk blk = {za_save, svl, {0}}; + + printf ("setcontext test:\n"); + p = get_tpidr2 (); + printf ("initial tp2 = %p\n", p); + if (p != NULL) + FAIL_EXIT1 ("tpidr2 is not initialized to 0"); + svcr = get_svcr (); + if (svcr != 0) + FAIL_EXIT1 ("svcr != 0: %lu", svcr); + set_tpidr2 (&blk); + start_za (); + load_za (za_orig); + + print_data ("za save space", za_save); + p = get_tpidr2 (); + printf ("before getcontext: tp2 = %p\n", p); + if (p != &blk) + FAIL_EXIT1 ("tpidr2 is not set to BLK %p", (void *)&blk); + r = getcontext (&ctx); + if (r != 0) + FAIL_EXIT1 ("getcontext failed"); + if (setcontext_done == 0) + { + p = get_tpidr2 (); + printf ("before setcontext: tp2 = %p\n", p); + if (p != &blk) + FAIL_EXIT1 ("tpidr2 is clobbered"); + setcontext_done = 1; + do_setcontext (&ctx); + FAIL_EXIT1 ("setcontext returned"); + } + p = get_tpidr2 (); + printf ("after setcontext: tp2 = %p\n", p); + if (p != NULL) + FAIL_EXIT1 ("tpidr2 is not set to 0"); + svcr = get_svcr (); + if (svcr != 0) + FAIL_EXIT1 ("svcr != 0: %lu", svcr); + print_data ("za save space", za_save); + r = memcmp (za_orig, za_save, svl*svl); + if (r != 0) + FAIL_EXIT1 ("saving za failed"); +} + +static int +do_test (void) +{ + unsigned long hwcap2; + + hwcap2 = getauxval (AT_HWCAP2); + if ((hwcap2 & HWCAP2_SME) == 0) + return 77; + + svl = get_svl (); + printf ("svl: %lu\n", svl); + if (svl < 16 || svl % 16 != 0 || svl >= (1 << 16)) + FAIL_EXIT1 ("invalid svl"); + + za_orig = malloc (svl*svl); + za_save = malloc (svl*svl); + za_dump = malloc (svl*svl); + memset (za_orig, 1, svl*svl); + memset (za_save, 2, svl*svl); + memset (za_dump, 3, svl*svl); + for (int i = 0; i < svl; i++) + for (int j = 0; j < svl; j++) + za_orig[i*svl+j] = i*svl+j; + print_data ("original data", za_orig); + + longjmp_test (); + + memset (za_save, 2, svl*svl); + memset (za_dump, 3, svl*svl); + + setcontext_test (); + + free (za_orig); + free (za_save); + free (za_dump); + return 0; +} + +#include