From nobody Sat Nov 8 10:05:12 2025 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; 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 Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1550069057998400.8554102069987; Wed, 13 Feb 2019 06:44:17 -0800 (PST) Received: from localhost ([127.0.0.1]:57878 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gtvlk-00083d-1m for importer@patchew.org; Wed, 13 Feb 2019 09:44:12 -0500 Received: from eggs.gnu.org ([209.51.188.92]:39542) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gtvbc-0008KJ-OU for qemu-devel@nongnu.org; Wed, 13 Feb 2019 09:33:46 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gtvbc-0002CR-1D for qemu-devel@nongnu.org; Wed, 13 Feb 2019 09:33:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51018) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gtvbb-0002Bh-RV; Wed, 13 Feb 2019 09:33:43 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 091B0C0AD1C1; Wed, 13 Feb 2019 14:33:43 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-173.ams2.redhat.com [10.36.116.173]) by smtp.corp.redhat.com (Postfix) with ESMTP id 178015D6AA; Wed, 13 Feb 2019 14:33:40 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Wed, 13 Feb 2019 15:33:14 +0100 Message-Id: <20190213143322.31371-8-david@redhat.com> In-Reply-To: <20190213143322.31371-1-david@redhat.com> References: <20190213143322.31371-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Wed, 13 Feb 2019 14:33:43 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 07/15] s390x/tcg: Fix simulated-IEEE exceptions X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Huth , Janosch Frank , David Hildenbrand , Cornelia Huck , Halil Pasic , Christian Borntraeger , qemu-s390x@nongnu.org, Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The trap is triggered based on priority of the enabled signaling flags. Only overflow and underflow allow a concurrent inexact exception. z14 PoP, 9-33, Figure 9-21 Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/fpu_helper.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/target/s390x/fpu_helper.c b/target/s390x/fpu_helper.c index ea5a37ac5e..7508c0748e 100644 --- a/target/s390x/fpu_helper.c +++ b/target/s390x/fpu_helper.c @@ -789,6 +789,19 @@ void HELPER(sfas)(CPUS390XState *env, uint64_t fpc) */ s390_exc =3D (signalling >> 16) & (fpc >> 24); if (s390_exc) { + if (s390_exc & S390_IEEE_MASK_INVALID) { + s390_exc =3D S390_IEEE_MASK_INVALID; + } else if (s390_exc & S390_IEEE_MASK_DIVBYZERO) { + s390_exc =3D S390_IEEE_MASK_DIVBYZERO; + } else if (s390_exc & S390_IEEE_MASK_OVERFLOW) { + s390_exc &=3D (S390_IEEE_MASK_OVERFLOW | S390_IEEE_MASK_INEXAC= T); + } else if (s390_exc & S390_IEEE_MASK_UNDERFLOW) { + s390_exc &=3D (S390_IEEE_MASK_UNDERFLOW | S390_IEEE_MASK_INEXA= CT); + } else if (s390_exc & S390_IEEE_MASK_INEXACT) { + s390_exc =3D S390_IEEE_MASK_INEXACT; + } else if (s390_exc & S390_IEEE_MASK_QUANTUM) { + s390_exc =3D S390_IEEE_MASK_QUANTUM; + } tcg_s390_data_exception(env, s390_exc | 3, GETPC()); } } --=20 2.17.2