From patchwork Fri Sep 29 06:39:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bastian Koppelmann X-Patchwork-Id: 1841106 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=mail.uni-paderborn.de header.i=@mail.uni-paderborn.de header.a=rsa-sha256 header.s=20170601 header.b=p72Jrr1/; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RxgjT2n5Fz1yp0 for ; Fri, 29 Sep 2023 16:41:17 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qm7BC-0005kw-1U; Fri, 29 Sep 2023 02:40:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qm7Az-0005f0-Tr for qemu-devel@nongnu.org; Fri, 29 Sep 2023 02:40:39 -0400 Received: from hoth.uni-paderborn.de ([2001:638:502:c003::19]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qm7Aq-0007OA-1A for qemu-devel@nongnu.org; Fri, 29 Sep 2023 02:40:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.uni-paderborn.de; s=20170601; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=XlhIZu2wG5GEm8bOpyij8zG6k/JHGKk+P3CD/Q1HBjc=; b=p72Jrr1/q8qdyZfTZVZ36pqpoj 0JXAEkhC3ZkeSHr+E569cm8p+7JLzjiY+qegOfmUrcrUfkjXhwb7rMnvBRU3YMq9Z9Sl7mjF8GHaP 51esPrfX07kDpCrwFLReJnhJQl+vf/v0E9e1E5pJeisU3QggKTK8kq+0IsS2CCrGS2ak=; X-Envelope-From: From: Bastian Koppelmann To: qemu-devel@nongnu.org Cc: kbastian@mail.uni-paderborn.de, Richard Henderson Subject: [PULL v3 05/16] target/tricore: Clarify special case for FTOUZ insn Date: Fri, 29 Sep 2023 08:39:49 +0200 Message-ID: <20230929064000.536923-6-kbastian@mail.uni-paderborn.de> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230929064000.536923-1-kbastian@mail.uni-paderborn.de> References: <20230929064000.536923-1-kbastian@mail.uni-paderborn.de> MIME-Version: 1.0 X-IMT-spamd-action: no action X-PMX-Version: 6.4.9.2830568, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2023.9.29.63017, AntiVirus-Engine: 6.0.2, AntiVirus-Data: 2023.9.28.602002 X-Sophos-SenderHistory: ip=79.202.213.239, fs=162260, da=183578689, mc=50, sc=0, hc=50, sp=0, fso=162260, re=0, sd=0, hd=0 X-IMT-Source: Intern X-IMT-Spam-Score: 0.0 () X-IMT-Authenticated-Sender: uid=kbastian,ou=People,o=upb,c=de Received-SPF: pass client-ip=2001:638:502:c003::19; envelope-from=kbastian@mail.uni-paderborn.de; helo=hoth.uni-paderborn.de X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org this is not something other ISAs do, so clarify it with a comment. Reviewed-by: Richard Henderson Signed-off-by: Bastian Koppelmann Message-ID: <20230828112651.522058-6-kbastian@mail.uni-paderborn.de> --- target/tricore/fpu_helper.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/tricore/fpu_helper.c b/target/tricore/fpu_helper.c index 3aefeb776e..d0c474c5f3 100644 --- a/target/tricore/fpu_helper.c +++ b/target/tricore/fpu_helper.c @@ -475,6 +475,11 @@ uint32_t helper_ftouz(CPUTriCoreState *env, uint32_t arg) if (float32_is_any_nan(f_arg)) { result = 0; } + /* + * we need to check arg < 0.0 before rounding as TriCore needs to raise + * float_flag_invalid as well. For instance, when we have a negative + * exponent and sign, softfloat would only raise float_flat_inexact. + */ } else if (float32_lt_quiet(f_arg, 0, &env->fp_status)) { flags = float_flag_invalid; result = 0;