From patchwork Mon Apr 18 16:03:35 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 8873681 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id ACC7BBF29F for ; Mon, 18 Apr 2016 16:04:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 111622017D for ; Mon, 18 Apr 2016 16:04:47 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DC4F52010B for ; Mon, 18 Apr 2016 16:04:44 +0000 (UTC) Received: from localhost ([::1]:40346 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asBfH-0005ho-UN for patchwork-qemu-devel@patchwork.kernel.org; Mon, 18 Apr 2016 12:04:43 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56653) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asBer-0005ch-Cf for qemu-devel@nongnu.org; Mon, 18 Apr 2016 12:04:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1asBeq-0005Zl-8Q for qemu-devel@nongnu.org; Mon, 18 Apr 2016 12:04:17 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:54393 helo=mail.rt-rk.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1asBen-0005U3-Kk; Mon, 18 Apr 2016 12:04:13 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 7630B1A463B; Mon, 18 Apr 2016 18:03:46 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw197-lin.domain.local (rtrkw197-lin.domain.local [10.10.13.82]) by mail.rt-rk.com (Postfix) with ESMTPSA id 3EDEA1A4600; Mon, 18 Apr 2016 18:03:46 +0200 (CEST) From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Mon, 18 Apr 2016 18:03:35 +0200 Message-Id: <1460995422-14373-3-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1460995422-14373-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1460995422-14373-1-git-send-email-aleksandar.markovic@rt-rk.com> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PATCH v5 2/9] softfloat: For Mips only, correct default NaN values 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: peter.maydell@linaro.org, proljc@gmail.com, kbastian@mail.uni-paderborn.de, mark.cave-ayland@ilande.co.uk, agraf@suse.de, maciej.rozycki@imgtec.com, petar.jovanovic@imgtec.com, blauwirbel@gmail.com, jcmvbkbc@gmail.com, aleksandar.markovic@imgtec.com, qemu-arm@nongnu.org, qemu-ppc@nongnu.org, edgar.iglesias@gmail.com, miodrag.dinic@imgtec.com, pbonzini@redhat.com, gxt@mprc.pku.edu.cn, leon.alrae@imgtec.com, afaerber@suse.de, aurelien@aurel32.net, rth@twiddle.net Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Aleksandar Markovic Only for Mips platform, and only for cases when snan_bit_is_one is 0, correct default NaN values (in their 16-, 32-, and 64-bit flavors). For more info, see [1], page 84, Table 6.3 "Value Supplied When a New Quiet NaN Is Created", and [2], page 52, Table 3.7 "Default NaN Encodings". [1] "MIPS® Architecture For Programmers Volume II-A: The MIPS64® Instruction Set Reference Manual", Imagination Technologies LTD, Revision 6.04, November 13, 2015 [2] "MIPS Architecture for Programmers Volume IV-j: The MIPS32® SIMD Architecture Module", Imagination Technologies LTD, Revision 1.12, February 3, 2016 Signed-off-by: Aleksandar Markovic Reviewed-by: Leon Alrae --- fpu/softfloat-specialize.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h index e03a529..093218f 100644 --- a/fpu/softfloat-specialize.h +++ b/fpu/softfloat-specialize.h @@ -97,7 +97,11 @@ float16 float16_default_nan(float_status *status) if (status->snan_bit_is_one) { return const_float16(0x7DFF); } else { +#if defined(TARGET_MIPS) + return const_float16(0x7E00); +#else return const_float16(0xFE00); +#endif } #endif } @@ -116,7 +120,11 @@ float32 float32_default_nan(float_status *status) if (status->snan_bit_is_one) { return const_float32(0x7FBFFFFF); } else { +#if defined(TARGET_MIPS) + return const_float32(0x7FC00000); +#else return const_float32(0xFFC00000); +#endif } #endif } @@ -135,7 +143,11 @@ float64 float64_default_nan(float_status *status) if (status->snan_bit_is_one) { return const_float64(LIT64(0x7FF7FFFFFFFFFFFF)); } else { +#if defined(TARGET_MIPS) + return const_float64(LIT64(0x7FF8000000000000)); +#else return const_float64(LIT64(0xFFF8000000000000)); +#endif } #endif }