From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2DBEBC47087 for ; Fri, 28 May 2021 15:37:00 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BD4C66139A for ; Fri, 28 May 2021 15:36:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BD4C66139A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=users.sourceforge.jp Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48628 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lmeXi-0002zh-VF for qemu-devel@archiver.kernel.org; Fri, 28 May 2021 11:36:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59240) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lmeWP-0000wf-He for qemu-devel@nongnu.org; Fri, 28 May 2021 11:35:37 -0400 Received: from mail01.asahi-net.or.jp ([202.224.55.13]:40258) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lmeWN-0007OB-Gg for qemu-devel@nongnu.org; Fri, 28 May 2021 11:35:37 -0400 Received: from sakura.ysato.name (ik1-413-38519.vs.sakura.ne.jp [153.127.30.23]) (Authenticated sender: PQ4Y-STU) by mail01.asahi-net.or.jp (Postfix) with ESMTPA id D089E1014A4; Sat, 29 May 2021 00:35:30 +0900 (JST) Received: from yo-satoh-debian.ysato.ml (ZM005235.ppp.dion.ne.jp [222.8.5.235]) by sakura.ysato.name (Postfix) with ESMTPSA id 292341C050B; Sat, 29 May 2021 00:35:30 +0900 (JST) Date: Sat, 29 May 2021 00:34:55 +0900 Message-ID: <87eedq7ty8.wl-ysato@users.sourceforge.jp> From: Yoshinori Sato To: Richard Henderson Subject: Re: [PATCH 06/11] target/rx: Handle the FPSW.DN bit in helper_set_fpsw In-Reply-To: <20210527041405.391567-7-richard.henderson@linaro.org> References: <20210527041405.391567-1-richard.henderson@linaro.org> <20210527041405.391567-7-richard.henderson@linaro.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?ISO-8859-4?Q?Goj=F2?=) APEL/10.8 EasyPG/1.0.0 Emacs/27 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Received-SPF: softfail client-ip=202.224.55.13; envelope-from=ysato@users.sourceforge.jp; helo=mail01.asahi-net.or.jp X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no autolearn_force=no X-Spam_action: no action 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: , Cc: mmorrell@tachyum.com, alex.bennee@linaro.org, qemu-devel@nongnu.org, Philippe =?ISO-8859-1?Q?Mathieu-Daud=E9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 27 May 2021 13:14:00 +0900, Richard Henderson wrote: >=20 > Both input and output denormals flush to zero when DN is set. >=20 > Cc: Philippe Mathieu-Daud=E9 > Cc: Yoshinori Sato > Signed-off-by: Richard Henderson Reviewd-by: Yoshinori Sato > --- > target/rx/op_helper.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) >=20 > diff --git a/target/rx/op_helper.c b/target/rx/op_helper.c > index ef904eb5f9..2139def3b2 100644 > --- a/target/rx/op_helper.c > +++ b/target/rx/op_helper.c > @@ -127,13 +127,20 @@ void helper_set_fpsw(CPURXState *env, uint32_t val) > float_round_down, > }; > uint32_t fpsw =3D env->fpsw; > + bool dn; > + > fpsw |=3D 0x7fffff03; > val &=3D ~0x80000000; > fpsw &=3D val; > FIELD_DP32(fpsw, FPSW, FS, FIELD_EX32(fpsw, FPSW, FLAGS) !=3D 0); > env->fpsw =3D fpsw; > - set_float_rounding_mode(roundmode[FIELD_EX32(env->fpsw, FPSW, RM)], > + > + set_float_rounding_mode(roundmode[FIELD_EX32(fpsw, FPSW, RM)], > &env->fp_status); > + > + dn =3D FIELD_EX32(env->fpsw, FPSW, DN); > + set_flush_to_zero(dn, &env->fp_status); > + set_flush_inputs_to_zero(dn, &env->fp_status); > } > =20 > #define FLOATOP(op, func) \ > --=20 > 2.25.1 >=20 >=20