From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from EUR04-DB3-obe.outbound.protection.outlook.com (mail-db3eur04on2049.outbound.protection.outlook.com [40.107.6.49]) by sourceware.org (Postfix) with ESMTPS id 0B9903857722 for ; Wed, 14 Feb 2024 09:20:50 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 0B9903857722 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 0B9903857722 Authentication-Results: server2.sourceware.org; arc=pass smtp.remote-ip=40.107.6.49 ARC-Seal: i=3; a=rsa-sha256; d=sourceware.org; s=key; t=1707902452; cv=pass; b=fZ+KtMDVR6ElE0uSLYcS6xaGxWzyMoeg8aXzcZxZsNbA/S8ywq3p+/H7YY1Zkr+gjXX5hWCtgwfhd4CYZrxoBNXh+s6pVsK6H/KkdVhEeMmmHih6pRgtZZcnbkK4Cmdb3f/FJ6+gUq4AhBGJPAyMES3CAAfXu3mmo4hsmnP6egg= ARC-Message-Signature: i=3; a=rsa-sha256; d=sourceware.org; s=key; t=1707902452; c=relaxed/simple; bh=qeakYT6XSXYXSHVU7HKnYLp/nCrh68ntMSOQfwfMTE0=; h=DKIM-Signature:DKIM-Signature:Message-ID:Date:Subject:To:From: MIME-Version; b=BeoZKG6JfGWVyl+L0okCOjpQKcU9u9UMi72nHpBQppVRBTwSI2D0nAMAmkjlxU5iIL3JqBaObX7wpEke2VAxE70x4Owi59PNPisVy9p82TVm3yXQX1BpfqmiBqaQT2LheNYsaVxvmb+exuKrsMyFKTRVQW2OLa20HoZAbZDuYhs= ARC-Authentication-Results: i=3; server2.sourceware.org ARC-Seal: i=2; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=pass; b=beLpDPInn8M2xnCJBZdr45qy3KhxNzzYjN75ZxnePB4krQRlDrsHvqp0VnPBGN4J8LdoWm+ZTGyJF9GOgM33L6JJqUo/frTBpapt8gAHf2q/DxVB924N8XBt1yggfkVG8kZamwoq/YeWpzk8fHNO4PWBohoXoj7kMPaeemSaLennuR8Rj+GyIaoMz8xw7N4DuivPGFCOVOnvKhdOPadxmCZS4GyfvQrpVDhkFLy5D708T03A2EhRF/rQc0FBLLIYTHvQ4Z9//sJ+uohM22/iGMLKGDhxcx9QWny37GuloALYHKsLUWd3/EHHfwhJllrUtusWL7z4wjrgh4u3HwCxOA== 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=o+MvOhBFIGcAqoFN5rwisFS4Wx9FTM+l0HDa8n9wQiE=; b=WoMN8RQITd2ua9ez4R7qC8kwUsNblbtLouZ8Z6ydrsMP39WVdCz72b3HQWmrwB54bFwzXmVIMHWuK/Che3QmcnK5x4dfOAt8WKJ1aZ49JbSRXR4JYvy4p6iuEbBJXoL6IQdX/UxVqvGTWT2aW4scKe8/KN47kn7S6qiLShzSRScZt9pgwK6vWECnTSd0IjdPCs0SxYqTOUqr3apMMoa8NFeXEjsa85dulnd36jo4GrSE2/omFyV5zHlIVdKsZ3v/ghY0RkbSHr6itS/9UZvlp2zg4u3A0QaazWHzPCaaOTSK/z3+CynAHdqVfXNyWZg5mIDwqEMjGiF7vpk2FccAtA== ARC-Authentication-Results: i=2; mx.microsoft.com 1; spf=pass (sender ip is 63.35.35.123) smtp.rcpttodomain=gcc.gnu.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] dkim=[1,1,header.d=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=o+MvOhBFIGcAqoFN5rwisFS4Wx9FTM+l0HDa8n9wQiE=; b=mj0Cctm1F5AxvfJLrqsE4tZU+k7y5oMtXXsu/6Gkx3r2RQJDny30Krcvs+CY/gP215EO6wbGG9CxKKsRNAeJgj1i+6FoD5AS3x/CI6n6ITSom1ITXdfIqDxqvC8o8E7F7It9cKohOYG7FB+qs8FP+ul2Dvx/0EPJUyra3OrmVgI= Received: from AS9PR05CA0302.eurprd05.prod.outlook.com (2603:10a6:20b:491::30) by AS8PR08MB8609.eurprd08.prod.outlook.com (2603:10a6:20b:565::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7270.39; Wed, 14 Feb 2024 09:20:47 +0000 Received: from AM2PEPF0001C70C.eurprd05.prod.outlook.com (2603:10a6:20b:491:cafe::bb) by AS9PR05CA0302.outlook.office365.com (2603:10a6:20b:491::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7270.39 via Frontend Transport; Wed, 14 Feb 2024 09:20:47 +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 AM2PEPF0001C70C.mail.protection.outlook.com (10.167.16.200) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.25 via Frontend Transport; Wed, 14 Feb 2024 09:20:46 +0000 Received: ("Tessian outbound 982a51ae93a5:v228"); Wed, 14 Feb 2024 09:20:46 +0000 X-CheckRecipientChecked: true X-CR-MTA-CID: 4b29a1b4a5b41a7f X-CR-MTA-TID: 64aa7808 Received: from 93fc6cf804dc.2 by 64aa7808-outbound-1.mta.getcheckrecipient.com id E415F4B6-EFCD-408A-B08F-5DAFAD487DCB.1; Wed, 14 Feb 2024 09:20:39 +0000 Received: from EUR04-HE1-obe.outbound.protection.outlook.com by 64aa7808-outbound-1.mta.getcheckrecipient.com with ESMTPS id 93fc6cf804dc.2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384); Wed, 14 Feb 2024 09:20:39 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=P+1EzNflo+t3jpkDzR/p+p3A9AlkWCFbaNjASNifjTF2XD5oE1cTpTcuE8BvmrS/JL2H/BWH3LgycBGShpS2vKA9L1Lv8cRng5VRwjzCkptUoNeaUAFdJ5g7mFvELnvZ6aJO/veel2j5Mu/NSrHF4VNg+imsph5QmXnN6UmVVDpm8mEBuDBAr7wOIgVacpyzlzyxa0FoVqQoncgBz8mwaq+xcXcKutNkRwY7EcKwzonMY6IWGSPXQwHjckJmGoJ2r9teiofTTEwHoi7d8f6z6HO8ykTYpuyI4OVXQfw3G1awKncYu8SokySaqv8jKl6VgVkXk+m0GZlKSeZqNGP8fw== 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=o+MvOhBFIGcAqoFN5rwisFS4Wx9FTM+l0HDa8n9wQiE=; b=a0Vcf8cPAGua+eDpgc258mIsHu9ytdCD+TqnNwC+FEWvMYHbRd95Oa2Pdw8EHvGFmwCgARSAL706vb8aiBjX4jlDpUjQPX4u5OnzVP8fjqhsyIKUU+w8XgewVCCmTb5uFHYGrJ51KigzGmDei0T2UGesfoLpGBykyen9PRWILV4A/SxT/TsINs+JgKiskb3v/+vIEhbjWBoTjepJyCA88PMw+GqiX+Z+7sekP5f4lxajoLAFqnIx8Ta4pbQSClCxFgi4DFoqamZjqDOj2O4ik+mbYsU2+Anu60ldIhl7EH4M63fAufHaiA3+R2pQafhzaHw/Z1rkTZ7nZQVaHzODSg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=arm.com; dmarc=pass action=none header.from=arm.com; dkim=pass header.d=arm.com; arc=none 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=o+MvOhBFIGcAqoFN5rwisFS4Wx9FTM+l0HDa8n9wQiE=; b=mj0Cctm1F5AxvfJLrqsE4tZU+k7y5oMtXXsu/6Gkx3r2RQJDny30Krcvs+CY/gP215EO6wbGG9CxKKsRNAeJgj1i+6FoD5AS3x/CI6n6ITSom1ITXdfIqDxqvC8o8E7F7It9cKohOYG7FB+qs8FP+ul2Dvx/0EPJUyra3OrmVgI= Authentication-Results-Original: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=arm.com; Received: from AS8PR08MB7079.eurprd08.prod.outlook.com (2603:10a6:20b:400::12) by PAXPR08MB7320.eurprd08.prod.outlook.com (2603:10a6:102:223::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7270.33; Wed, 14 Feb 2024 09:20:35 +0000 Received: from AS8PR08MB7079.eurprd08.prod.outlook.com ([fe80::c463:f1a5:61fe:6490]) by AS8PR08MB7079.eurprd08.prod.outlook.com ([fe80::c463:f1a5:61fe:6490%5]) with mapi id 15.20.7270.036; Wed, 14 Feb 2024 09:20:35 +0000 Content-Type: multipart/mixed; boundary="------------gZS6mzgHbFVfmixFujiktmOg" Message-ID: Date: Wed, 14 Feb 2024 14:50:30 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] Arm: Fix incorrect tailcall-generation for indirect calls [PR113780] Content-Language: en-US To: "Richard Earnshaw (lists)" , gcc-patches@gcc.gnu.org Cc: rearnsha@arm.com References: <20240207075921.2151371-1-tejas.belagod@arm.com> <91ae00db-b7a6-44c1-87db-385ccafb3a53@arm.com> From: Tejas Belagod In-Reply-To: <91ae00db-b7a6-44c1-87db-385ccafb3a53@arm.com> X-ClientProxiedBy: PN2PR01CA0088.INDPRD01.PROD.OUTLOOK.COM (2603:1096:c01:23::33) To AS8PR08MB7079.eurprd08.prod.outlook.com (2603:10a6:20b:400::12) MIME-Version: 1.0 X-MS-TrafficTypeDiagnostic: AS8PR08MB7079:EE_|PAXPR08MB7320:EE_|AM2PEPF0001C70C:EE_|AS8PR08MB8609:EE_ X-MS-Office365-Filtering-Correlation-Id: 51522a62-4896-4ae8-d431-08dc2d3e3a59 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: WWExDVzJI394vO/ljx4CdOIfte6ZGzv67oCGhcCjfFQPFsOrAIXVsAaJ+pZl7N4VLRgsx1emmCZOnZQITcoVVbxFRWvjLtMFVLjMLVKvfyQjTP0vleEbZGJoWShFEjGrbC3pv68rfJsMjGITFKzAoFe9jq6IiGDEk4WYJAiThHcLkNi5E9WdS/Gpl23f4Hy740LAP/+X2WghPfePNBxtHI14uXv6C03lQ+Ixjb0GsrAw3xQDsUul/smH7jKwls6aNrSPfxM9SKhpWlDduMmSljXSpWqJVsZHC+8nzJoHIGycv23myni3p/fVmtcljwLlZlOv18BwqSAbULhVN8TKltrAEKQKc52ZIiXku6VokRivXQNO+Wd6KChIupo6wY1O/6PVdHBCOy6UN0WeJxqFTLSM1ImjsvLdudk2APDzYl+7Qko1n6YRxpkgjAib33XF3HZthcHeMjbueOVijc1fp0ZNRXhLvckq7t3am0X8lwi0gv5DLgsILtTM5sJ0ed/TnlXCl6NFcQ+k6GuyEWtb6X5cX0SAmoAFq/wrIaZ1xZQ= X-Forefront-Antispam-Report-Untrusted: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS8PR08MB7079.eurprd08.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(39860400002)(396003)(366004)(376002)(136003)(346002)(230922051799003)(451199024)(1800799012)(64100799003)(186009)(8676002)(66556008)(66476007)(235185007)(66946007)(44832011)(2906002)(4326008)(21480400003)(86362001)(36756003)(478600001)(38100700002)(83380400001)(316002)(53546011)(6666004)(6486002)(6506007)(6512007)(33964004)(966005)(26005)(41300700001)(8936002)(84970400001)(5660300002)(31686004)(2616005)(31696002);DIR:OUT;SFP:1101; X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAXPR08MB7320 Original-Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=arm.com; X-EOPAttributedMessage: 0 X-MS-Exchange-Transport-CrossTenantHeadersStripped: AM2PEPF0001C70C.eurprd05.prod.outlook.com X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id-Prvs: b7d75092-0ede-4161-bdea-08dc2d3e337b X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 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)(39860400002)(396003)(136003)(376002)(346002)(230922051799003)(82310400011)(451199024)(1800799012)(186009)(64100799003)(40470700004)(46966006)(36840700001)(31696002)(21480400003)(8936002)(8676002)(81166007)(83380400001)(82740400003)(356005)(4326008)(2906002)(235185007)(5660300002)(70586007)(70206006)(44832011)(41300700001)(26005)(336012)(2616005)(316002)(53546011)(478600001)(966005)(6486002)(6506007)(33964004)(6666004)(6512007)(86362001)(36756003)(84970400001)(31686004);DIR:OUT;SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Feb 2024 09:20:46.9330 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 51522a62-4896-4ae8-d431-08dc2d3e3a59 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: AM2PEPF0001C70C.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR08MB8609 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_LOTSOFHASH,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 List-Id: --------------gZS6mzgHbFVfmixFujiktmOg Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2/7/24 11:41 PM, Richard Earnshaw (lists) wrote: > On 07/02/2024 07:59, Tejas Belagod wrote: >> This patch fixes a bug that causes indirect calls in PAC-enabled functions >> to be tailcalled incorrectly when all argument registers R0-R3 are used. >> >> Tested on arm-none-eabi for armv8.1-m.main. OK for trunk? >> >> 2024-02-07 Tejas Belagod >> >> PR target/113780 >> * gcc/config/arm.cc (arm_function_ok_for_sibcall): Don't allow tailcalls >> for indirect calls with 4 or more arguments in pac-enabled functions. >> >> * gcc.target/arm/pac-sibcall.c: New. >> --- >> gcc/config/arm/arm.cc | 12 ++++++++---- >> gcc/testsuite/gcc.target/arm/pac-sibcall.c | 11 +++++++++++ >> 2 files changed, 19 insertions(+), 4 deletions(-) >> create mode 100644 gcc/testsuite/gcc.target/arm/pac-sibcall.c >> >> diff --git a/gcc/config/arm/arm.cc b/gcc/config/arm/arm.cc >> index c44047c377a..c1f8286a4d4 100644 >> --- a/gcc/config/arm/arm.cc >> +++ b/gcc/config/arm/arm.cc >> @@ -7980,10 +7980,14 @@ arm_function_ok_for_sibcall (tree decl, tree exp) >> && DECL_WEAK (decl)) >> return false; >> >> - /* We cannot do a tailcall for an indirect call by descriptor if all the >> - argument registers are used because the only register left to load the >> - address is IP and it will already contain the static chain. */ >> - if (!decl && CALL_EXPR_BY_DESCRIPTOR (exp) && !flag_trampolines) >> + /* We cannot do a tailcall for an indirect call by descriptor or for an >> + indirect call in a pac-enabled function if all the argument registers >> + are used because the only register left to load the address is IP and >> + it will already contain the static chain or the PAC signature in the >> + case of PAC-enabled functions. */ > > This comment is becoming a bit unwieldy. I suggest restructuring it as: > > We cannot tailcall an indirect call by descriptor if all the call-clobbered > general registers are live (r0-r3 and ip). This can happen when: > - IP contains the static chain, or > - IP is needed for validating the PAC signature. > > >> + if (!decl >> + && ((CALL_EXPR_BY_DESCRIPTOR (exp) && !flag_trampolines) >> + || arm_current_function_pac_enabled_p())) >> { >> tree fntype = TREE_TYPE (TREE_TYPE (CALL_EXPR_FN (exp))); >> CUMULATIVE_ARGS cum; >> diff --git a/gcc/testsuite/gcc.target/arm/pac-sibcall.c b/gcc/testsuite/gcc.target/arm/pac-sibcall.c >> new file mode 100644 >> index 00000000000..c57bf7a952c >> --- /dev/null >> +++ b/gcc/testsuite/gcc.target/arm/pac-sibcall.c >> @@ -0,0 +1,11 @@ >> +/* Testing return address signing. */ >> +/* { dg-do compile } */ >> +/* { dg-require-effective-target mbranch_protection_ok } */ >> +/* { dg-options " -mcpu=cortex-m85 -mbranch-protection=pac-ret+leaf -O2" } */ > > No, you can't just add options like this, you need to first check that they won't result in conflicts with other options on the command line. See https://gcc.gnu.org/pipermail/gcc-patches/2024-January/644077.html for an example of how to handle this. > Thanks for the review, Richard. Respin attached. Thanks, Tejas. >> + >> +void fail(void (*f)(int, int, int, int)) >> +{ >> + f(1, 2, 3, 4); >> +} >> + >> +/* { dg-final { scan-assembler-not "bx\tip\t@ indirect register sibling call" } } */ > > R. > --------------gZS6mzgHbFVfmixFujiktmOg Content-Type: text/plain; charset=UTF-8; name="tail-call-m.txt" Content-Disposition: attachment; filename="tail-call-m.txt" Content-Transfer-Encoding: base64 ZGlmZiAtLWdpdCBhL2djYy9jb25maWcvYXJtL2FybS5jYyBiL2djYy9jb25maWcvYXJtL2FybS5j YwppbmRleCBjNDQwNDdjMzc3YTgwMmQwYzFkYzE0MDZkZjFiODhhNmIwNzk2MDdiLi4xY2Q2OTI2 OGVlOTg2YTA5NTNjYzg1YWIyNTkzNTVkMjE5MTI1MGFjIDEwMDY0NAotLS0gYS9nY2MvY29uZmln L2FybS9hcm0uY2MKKysrIGIvZ2NjL2NvbmZpZy9hcm0vYXJtLmNjCkBAIC03OTgwLDEwICs3OTgw LDEzIEBAIGFybV9mdW5jdGlvbl9va19mb3Jfc2liY2FsbCAodHJlZSBkZWNsLCB0cmVlIGV4cCkK ICAgICAgICYmIERFQ0xfV0VBSyAoZGVjbCkpCiAgICAgcmV0dXJuIGZhbHNlOwogCi0gIC8qIFdl IGNhbm5vdCBkbyBhIHRhaWxjYWxsIGZvciBhbiBpbmRpcmVjdCBjYWxsIGJ5IGRlc2NyaXB0b3Ig aWYgYWxsIHRoZQotICAgICBhcmd1bWVudCByZWdpc3RlcnMgYXJlIHVzZWQgYmVjYXVzZSB0aGUg b25seSByZWdpc3RlciBsZWZ0IHRvIGxvYWQgdGhlCi0gICAgIGFkZHJlc3MgaXMgSVAgYW5kIGl0 IHdpbGwgYWxyZWFkeSBjb250YWluIHRoZSBzdGF0aWMgY2hhaW4uICAqLwotICBpZiAoIWRlY2wg JiYgQ0FMTF9FWFBSX0JZX0RFU0NSSVBUT1IgKGV4cCkgJiYgIWZsYWdfdHJhbXBvbGluZXMpCisg IC8qIFdlIGNhbm5vdCB0YWlsY2FsbCBhbiBpbmRpcmVjdCBjYWxsIGJ5IGRlc2NyaXB0b3IgaWYg YWxsIHRoZSBjYWxsLWNsb2JiZXJlZAorICAgICBnZW5lcmFsIHJlZ2lzdGVycyBhcmUgbGl2ZSAo cjAtcjMgYW5kIGlwKS4gIFRoaXMgY2FuIGhhcHBlbiB3aGVuOgorICAgICAgLSBJUCBjb250YWlu cyB0aGUgc3RhdGljIGNoYWluLCBvcgorICAgICAgLSBJUCBpcyBuZWVkZWQgZm9yIHZhbGlkYXRp bmcgdGhlIFBBQyBzaWduYXR1cmUuICAqLworICBpZiAoIWRlY2wKKyAgICAgICYmICgoQ0FMTF9F WFBSX0JZX0RFU0NSSVBUT1IgKGV4cCkgJiYgIWZsYWdfdHJhbXBvbGluZXMpCisJICB8fCBhcm1f Y3VycmVudF9mdW5jdGlvbl9wYWNfZW5hYmxlZF9wKCkpKQogICAgIHsKICAgICAgIHRyZWUgZm50 eXBlID0gVFJFRV9UWVBFIChUUkVFX1RZUEUgKENBTExfRVhQUl9GTiAoZXhwKSkpOwogICAgICAg Q1VNVUxBVElWRV9BUkdTIGN1bTsKZGlmZiAtLWdpdCBhL2djYy90ZXN0c3VpdGUvZ2NjLnRhcmdl dC9hcm0vcGFjLXNpYmNhbGwuYyBiL2djYy90ZXN0c3VpdGUvZ2NjLnRhcmdldC9hcm0vcGFjLXNp YmNhbGwuYwpuZXcgZmlsZSBtb2RlIDEwMDY0NAppbmRleCAwMDAwMDAwMDAwMDAwMDAwMDAwMDAw MDAwMDAwMDAwMDAwMDAwMDAwLi4yOTY4NmFkOGVjYmJiMWVlZmY4NjJkODI3YzI3ZmYzNzIxYmZh OGVhCi0tLSAvZGV2L251bGwKKysrIGIvZ2NjL3Rlc3RzdWl0ZS9nY2MudGFyZ2V0L2FybS9wYWMt c2liY2FsbC5jCkBAIC0wLDAgKzEsMTQgQEAKKy8qIElmIGFsbCBjYWxsLWNsb2JiZXJlZCBnZW5l cmFsIHJlZ2lzdGVycyBhcmUgbGl2ZSAocjAtcjMsIGlwKSwgZGlzYWJsZQorICAgaW5kaXJlY3Qg dGFpbC1jYWxsIGZvciBhIFBBQy1lbmFibGVkIGZ1bmN0aW9uLiAgKi8KKworLyogeyBkZy1kbyBj b21waWxlIH0gKi8KKy8qIHsgZGctcmVxdWlyZS1lZmZlY3RpdmUtdGFyZ2V0IG1icmFuY2hfcHJv dGVjdGlvbl9vayB9ICovCisvKiB7IGRnLWFkZC1vcHRpb25zIGFybV9hcmNoX3Y4XzFtX21haW5f cGFjYnRpIH0gKi8KKy8qIHsgZGctYWRkaXRpb25hbC1vcHRpb25zICItbWJyYW5jaC1wcm90ZWN0 aW9uPXBhYy1yZXQrbGVhZiAtTzIiIH0gKi8KKwordm9pZCBmYWlsKHZvaWQgKCpmKShpbnQsIGlu dCwgaW50LCBpbnQpKQoreworICBmKDEsIDIsIDMsIDQpOworfQorCisvKiB7IGRnLWZpbmFsIHsg c2Nhbi1hc3NlbWJsZXItbm90ICJieFx0aXBcdEAgaW5kaXJlY3QgcmVnaXN0ZXIgc2libGluZyBj YWxsIiB9IH0gKi8KZGlmZiAtLWdpdCBhL2djYy90ZXN0c3VpdGUvbGliL3RhcmdldC1zdXBwb3J0 cy5leHAgYi9nY2MvdGVzdHN1aXRlL2xpYi90YXJnZXQtc3VwcG9ydHMuZXhwCmluZGV4IGIxZmFh ZjRhYTk1NWVmZGI3OGNkYzEzYTEzOWEwYTExYjI0MDEyYTcuLjBhZjJkM2VhODBmYjFmZDg5NjZm MjgwNmZlODdlMWY4OWRhMjYxZjMgMTAwNjQ0Ci0tLSBhL2djYy90ZXN0c3VpdGUvbGliL3Rhcmdl dC1zdXBwb3J0cy5leHAKKysrIGIvZ2NjL3Rlc3RzdWl0ZS9saWIvdGFyZ2V0LXN1cHBvcnRzLmV4 cApAQCAtNTUzNCw3ICs1NTM0LDcgQEAgZm9yZWFjaCB7IGFybWZ1bmMgYXJtZmxhZyBhcm1kZWZz IH0gewogCXY4bV9tYWluICItbWFyY2g9YXJtdjgtbS5tYWluK2ZwIC1tdGh1bWIiIF9fQVJNX0FS Q0hfOE1fTUFJTl9fCiAJdjhfMW1fbWFpbiAiLW1hcmNoPWFybXY4LjEtbS5tYWluK2ZwIC1tdGh1 bWIiIF9fQVJNX0FSQ0hfOE1fTUFJTl9fCiAJdjhfMW1fbWFpbl9wYWNidGkgIi1tYXJjaD1hcm12 OC4xLW0ubWFpbitwYWNidGkrZnAgLW10aHVtYiIKLQkJIl9fQVJNX0FSQ0hfOE1fTUFJTl9fICYm IF9fQVJNX0ZFQVRVUkVfQlRJIgorCQkiX19BUk1fQVJDSF84TV9NQUlOX18gJiYgX19BUk1fRkVB VFVSRV9CVEkgJiYgX19BUk1fRkVBVFVSRV9QQVVUSCIKIAl2OWEgIi1tYXJjaD1hcm12OS1hK3Np bWQiIF9fQVJNX0FSQ0hfOUFfXyB9IHsKICAgICBldmFsIFtzdHJpbmcgbWFwIFtsaXN0IEZVTkMg JGFybWZ1bmMgRkxBRyAkYXJtZmxhZyBERUZTICRhcm1kZWZzIF0gewogCXByb2MgY2hlY2tfZWZm ZWN0aXZlX3RhcmdldF9hcm1fYXJjaF9GVU5DX29rIHsgfSB7Cg== --------------gZS6mzgHbFVfmixFujiktmOg--