From patchwork Thu May 6 12:30:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Weimer X-Patchwork-Id: 43268 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 9C2D53AA9835; Thu, 6 May 2021 12:30:09 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9C2D53AA9835 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1620304209; bh=Ae3LX7Tw6Eoco8RqtnbuozMD0MGK5dqsDe1/RvHPC74=; h=To:Subject:In-Reply-To:References:Date:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To: From; b=bUwwn/5iFUe/uo5ZKQSgvw5Qbiy7l3uYkb7yqkB/aVTlUSrOl1sOsVrVATu6jmbPW S9NKDebR8/2fhI+lxF4qqAANc+Vrb/2ACpdwqYcOn19GdVwDLLvYsNgVT5ms63pYkN +ibYRmaOtEN5iSGvrj9c7hnuSfLug2CIzVkZoITA= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by sourceware.org (Postfix) with ESMTP id 94E8B3AA9835 for ; Thu, 6 May 2021 12:30:07 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 94E8B3AA9835 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-169-i6Ckbf4kOt2MgTiuzn839g-1; Thu, 06 May 2021 08:30:05 -0400 X-MC-Unique: i6Ckbf4kOt2MgTiuzn839g-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7D131107ACE4 for ; Thu, 6 May 2021 12:30:03 +0000 (UTC) Received: from oldenburg.str.redhat.com (ovpn-112-137.ams2.redhat.com [10.36.112.137]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E55D65C1A1 for ; Thu, 6 May 2021 12:30:02 +0000 (UTC) To: libc-alpha@sourceware.org Subject: [PATCH 3/3] s390x: Check HWCAP bits against compiler flags In-Reply-To: References: Message-Id: Date: Thu, 06 May 2021 14:30:21 +0200 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-12.8 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Florian Weimer via Libc-alpha From: Florian Weimer Reply-To: Florian Weimer Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" When compiled with GCC 11.1 and -march=z14 -O3 build flags, running ld.so (or any dynamically linked program) prints: Fatal glibc error: CPU lacks VXE support (z14 or later required) Co-Authored-By: Stefan Liebler Reviewed-by: Stefan Liebler --- sysdeps/s390/s390-64/dl-hwcap-check.h | 40 +++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 sysdeps/s390/s390-64/dl-hwcap-check.h diff --git a/sysdeps/s390/s390-64/dl-hwcap-check.h b/sysdeps/s390/s390-64/dl-hwcap-check.h new file mode 100644 index 0000000000..87e18be6bd --- /dev/null +++ b/sysdeps/s390/s390-64/dl-hwcap-check.h @@ -0,0 +1,40 @@ +/* Check for hardware capabilities after HWCAP parsing. S390 version. + Copyright (C) 2021 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 + . */ + +#ifndef _DL_HWCAP_CHECK_H +#define _DL_HWCAP_CHECK_H + +#include + +static inline void +dl_hwcap_check (void) +{ +#if defined __ARCH__ +# if __ARCH__ >= 13 + if (!(GLRO(dl_hwcap) & HWCAP_S390_VXRS_EXT2)) + _dl_fatal_printf ("\ +Fatal glibc error: CPU lacks VXRS_EXT2 support (z15 or later required)\n"); +# elif __ARCH__ >= 12 + if (!(GLRO(dl_hwcap) & HWCAP_S390_VXE)) + _dl_fatal_printf ("\ +Fatal glibc error: CPU lacks VXE support (z14 or later required)\n"); +# endif +#endif /* __ARCH__ */ +} + +#endif /* _DL_HWCAP_CHECK_H */