From patchwork Fri Jun 3 18:43:09 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 9153917 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A39396082E for ; Fri, 3 Jun 2016 18:52:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 997C228330 for ; Fri, 3 Jun 2016 18:52:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8DEA228334; Fri, 3 Jun 2016 18:52:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 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.wl.linuxfoundation.org (Postfix) with ESMTPS id 6810028330 for ; Fri, 3 Jun 2016 18:52:08 +0000 (UTC) Received: from localhost ([::1]:57228 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8uCV-0008Nv-IF for patchwork-qemu-devel@patchwork.kernel.org; Fri, 03 Jun 2016 14:52:07 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41934) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8u5B-0001gu-27 for qemu-devel@nongnu.org; Fri, 03 Jun 2016 14:44:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b8u54-0007Q7-VD for qemu-devel@nongnu.org; Fri, 03 Jun 2016 14:44:31 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:39737 helo=mail.rt-rk.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8u54-0007Q3-Nl for qemu-devel@nongnu.org; Fri, 03 Jun 2016 14:44:26 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id C64DA1A47BB; Fri, 3 Jun 2016 20:44:24 +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 AF6D51A47B3; Fri, 3 Jun 2016 20:44:24 +0200 (CEST) From: Aleksandar Markovic To: qemu-devel@nongnu.org, leon.alrae@imgtec.com, petar.jovanovic@imgtec.com, miodrag.dinic@imgtec.com, aleksandar.markovic@imgtec.com Date: Fri, 3 Jun 2016 20:43:09 +0200 Message-Id: <1464979398-16838-4-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464979398-16838-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1464979398-16838-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PATCH v8 3/9] 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: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" 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 Reviewed-by: Leon Alrae Signed-off-by: Aleksandar Markovic --- 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 }