From nobody Mon Feb 9 14:50:37 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1571931801; cv=none; d=zoho.com; s=zohoarc; b=Wh/x+MmqpVYd67sNTuOFh+vCDfPCXaF8CYvFI25jZFdXgx+VDko6dE5a96x0ZpTD1+Zp1G7B/cwCgXwvEzrvPZURrhi1jYrsvWx1cJ3nk4Z9ZnTt7LHcmVsrlXMu8lF7G+wqsEoI2qPp3c5MmWdoSX09FqDoPnK1ETXRJOt2/RM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1571931801; h=Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=ACSSwd4vLiPduucfk8qILiYK3BU6NBbxPynhmSEzC6A=; b=fMAXco6V+QhVf2UUyMRt1un+9uriNCzGMEd6T+9Lre90kWiQcy92f2mr50bZB8BgDkdIqc8YClQBZA05thue/SRUddlKsxOwP1+2UuGI2RjUS3RLPmicfbZL9BI+4WAD/frlfQUduPFGWbNyKG72o7r5US8yIj7YnLNDbj7DpFw= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1571931801811498.67670481816947; Thu, 24 Oct 2019 08:43:21 -0700 (PDT) Received: from localhost ([::1]:45552 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNfGi-0000z1-HL for importer@patchew.org; Thu, 24 Oct 2019 11:43:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35030) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iNdjF-0008LG-L8 for qemu-devel@nongnu.org; Thu, 24 Oct 2019 10:04:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iNdjE-0007xB-7I for qemu-devel@nongnu.org; Thu, 24 Oct 2019 10:04:41 -0400 Received: from mail-wr1-x442.google.com ([2a00:1450:4864:20::442]:33228) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iNdjE-0007we-17 for qemu-devel@nongnu.org; Thu, 24 Oct 2019 10:04:40 -0400 Received: by mail-wr1-x442.google.com with SMTP id s1so17473487wro.0 for ; Thu, 24 Oct 2019 07:04:39 -0700 (PDT) Received: from 640k.localdomain ([93.56.166.5]) by smtp.gmail.com with ESMTPSA id b7sm10610155wrn.53.2019.10.24.07.04.38 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 24 Oct 2019 07:04:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:subject:date:message-id:in-reply-to:references; bh=ACSSwd4vLiPduucfk8qILiYK3BU6NBbxPynhmSEzC6A=; b=YXoEhScKkoeIwTfYdNx/Gv6m/u6kNPKPze0mWwwCVCV3hmU7UNVgefmnmw41th7Rp+ mZjC7jet6BAgq6QFHKGuYGQVcB/k8CuoRx+Z0xpdESTe4sIiXz3sCkTSA+5psfnEZbZT hnBR5fvkkHuqQzFT70VHLeIBfct0yKoOq/pzdJp6aHdnWGVsERR+PNkZHVZDLWRiyQ4v oMCZ4SS6QJzexh3bwll0nFREhKrIrXTFZQGLwdfP3c+jMQvUsCsUMALv+uyNXK1FXN1q 0p8hD3evedbLYF6yJo17raNzCpMdV/TzW8RfQ/281Fbt/DniAOC8+1HbSWMafNbYPb0m 9a5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:subject:date:message-id :in-reply-to:references; bh=ACSSwd4vLiPduucfk8qILiYK3BU6NBbxPynhmSEzC6A=; b=lNhj03OERNVT/G+tZ6hli91wl2gRu7lBr5pdQOOFQIzW26Jdf0S6iyWsA1dPBw2JzH A3p3SDqQW6zBrk3uaRVFtSShW+FReHh3jksWxv5gNidV3YP8ZEgTDSOHMmMxOPaoXAqU jqRRLszm8k3vbdbtUesPMR0Jbhzu0oI3WFBmNpHZjXy9IsSR3mwscj4GJXlLurEqX9MC vuN/HfQyVo4CEyAtIcedMp7guXbOdUUjGTmFWWIwIn3yBbohx/I9XXP5eLRTPJ41xfWH 9V+p/vIPGpztTDLJOoJ0WhCczcHWaI25ywDL9YRhFPPhrdGU695gE+5+EMek61/yq8Bv ySYw== X-Gm-Message-State: APjAAAVZ6Wuv67X3YHayvVjpSz77yK57yvyCHcSCKXrqc2pvKe2llt4r ZIqTnBgSfnu2R+QEte4+WYKLhlWh X-Google-Smtp-Source: APXvYqxQDSGFdpPuxTzYN3MHJYdSlYSzwda4d+Kf9uxWHaQVOqAYtpeAGeGCSf89acBPCLRhsIRDXQ== X-Received: by 2002:adf:a48c:: with SMTP id g12mr3830271wrb.212.1571925878701; Thu, 24 Oct 2019 07:04:38 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 38/39] target/i386: introduce cpu_set_fpus Date: Thu, 24 Oct 2019 16:03:54 +0200 Message-Id: <1571925835-31930-39-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1571925835-31930-1-git-send-email-pbonzini@redhat.com> References: <1571925835-31930-1-git-send-email-pbonzini@redhat.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::442 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" In the next patch, this will provide a hook to detect clearing of FSW.ES. Signed-off-by: Paolo Bonzini --- target/i386/fpu_helper.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/target/i386/fpu_helper.c b/target/i386/fpu_helper.c index 4db0059..6825024 100644 --- a/target/i386/fpu_helper.c +++ b/target/i386/fpu_helper.c @@ -1053,6 +1053,12 @@ void helper_fstenv(CPUX86State *env, target_ulong pt= r, int data32) do_fstenv(env, ptr, data32, GETPC()); } =20 +static void cpu_set_fpus(CPUX86State *env, uint16_t fpus) +{ + env->fpstt =3D (fpus >> 11) & 7; + env->fpus =3D fpus & ~0x3800; +} + static void do_fldenv(CPUX86State *env, target_ulong ptr, int data32, uintptr_t retaddr) { @@ -1067,8 +1073,7 @@ static void do_fldenv(CPUX86State *env, target_ulong = ptr, int data32, fpus =3D cpu_lduw_data_ra(env, ptr + 2, retaddr); fptag =3D cpu_lduw_data_ra(env, ptr + 4, retaddr); } - env->fpstt =3D (fpus >> 11) & 7; - env->fpus =3D fpus & ~0x3800; + cpu_set_fpus(env, fpus); for (i =3D 0; i < 8; i++) { env->fptags[i] =3D ((fptag & 3) =3D=3D 3); fptag >>=3D 2; @@ -1316,8 +1321,7 @@ static void do_xrstor_fpu(CPUX86State *env, target_ul= ong ptr, uintptr_t ra) fpus =3D cpu_lduw_data_ra(env, ptr + XO(legacy.fsw), ra); fptag =3D cpu_lduw_data_ra(env, ptr + XO(legacy.ftw), ra); cpu_set_fpuc(env, fpuc); - env->fpstt =3D (fpus >> 11) & 7; - env->fpus =3D fpus & ~0x3800; + cpu_set_fpus(env, fpus); fptag ^=3D 0xff; for (i =3D 0; i < 8; i++) { env->fptags[i] =3D ((fptag >> i) & 1); --=20 1.8.3.1