From patchwork Fri Feb 10 07:23:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bharata B Rao X-Patchwork-Id: 9566045 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 5BEF7602B6 for ; Fri, 10 Feb 2017 07:25:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4877F2852A for ; Fri, 10 Feb 2017 07:25:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3D13328545; Fri, 10 Feb 2017 07:25:20 +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 D0FEC2852A for ; Fri, 10 Feb 2017 07:25:19 +0000 (UTC) Received: from localhost ([::1]:42290 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cc5a2-0007XL-S7 for patchwork-qemu-devel@patchwork.kernel.org; Fri, 10 Feb 2017 02:25:18 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60151) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cc5Z9-0007Es-M1 for qemu-devel@nongnu.org; Fri, 10 Feb 2017 02:24:25 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cc5Z6-0000M0-HH for qemu-devel@nongnu.org; Fri, 10 Feb 2017 02:24:23 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:43025) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cc5Z6-0000LI-7p for qemu-devel@nongnu.org; Fri, 10 Feb 2017 02:24:20 -0500 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v1A7Il1j028904 for ; Fri, 10 Feb 2017 02:24:19 -0500 Received: from e23smtp03.au.ibm.com (e23smtp03.au.ibm.com [202.81.31.145]) by mx0a-001b2d01.pphosted.com with ESMTP id 28h4cn90pk-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 10 Feb 2017 02:24:18 -0500 Received: from localhost by e23smtp03.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 10 Feb 2017 17:24:15 +1000 Received: from d23relay09.au.ibm.com (d23relay09.au.ibm.com [9.185.63.181]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 274A03578052; Fri, 10 Feb 2017 18:24:15 +1100 (EST) Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay09.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v1A7O7bk32309420; Fri, 10 Feb 2017 18:24:15 +1100 Received: from d23av03.au.ibm.com (localhost [127.0.0.1]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v1A7Ng5x023616; Fri, 10 Feb 2017 18:23:42 +1100 Received: from bharata.in.ibm.com ([9.77.205.48]) by d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v1A7NYCs023032; Fri, 10 Feb 2017 18:23:41 +1100 From: Bharata B Rao To: qemu-devel@nongnu.org Date: Fri, 10 Feb 2017 12:53:07 +0530 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1486711391-12247-1-git-send-email-bharata@linux.vnet.ibm.com> References: <1486711391-12247-1-git-send-email-bharata@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17021007-0008-0000-0000-00000109064F X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17021007-0009-0000-0000-000009084D81 Message-Id: <1486711391-12247-4-git-send-email-bharata@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-02-10_02:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000 definitions=main-1702100074 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH 3/7] softfloat: Add float128_to_uint32_round_to_zero() 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: rth@twiddle.net, qemu-ppc@nongnu.org, Bharata B Rao , nikunj@linux.vnet.ibm.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP float128_to_uint32_round_to_zero() is needed by xscvqpuwz instruction of PowerPC ISA 3.0. Signed-off-by: Bharata B Rao Reviewed-by: Peter Maydell --- Earlier posted separately at: https://lists.nongnu.org/archive/html/qemu-devel/2017-02/msg01326.html fpu/softfloat.c | 28 ++++++++++++++++++++++++++++ include/fpu/softfloat.h | 1 + 2 files changed, 29 insertions(+) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 47e4646..485a006 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -6188,6 +6188,34 @@ uint64_t float128_to_uint64_round_to_zero(float128 a, float_status *status) /*---------------------------------------------------------------------------- | Returns the result of converting the quadruple-precision floating-point +| value `a' to the 32-bit unsigned integer format. The conversion +| is performed according to the IEC/IEEE Standard for Binary Floating-Point +| Arithmetic except that the conversion is always rounded toward zero. +| If `a' is a NaN, the largest positive integer is returned. Otherwise, +| if the conversion overflows, the largest unsigned integer is returned. +| If 'a' is negative, the value is rounded and zero is returned; negative +| values that do not round to zero will raise the inexact exception. +*----------------------------------------------------------------------------*/ + +uint32_t float128_to_uint32_round_to_zero(float128 a, float_status *status) +{ + uint64_t v; + uint32_t res; + int old_exc_flags = get_float_exception_flags(status); + + v = float128_to_uint64_round_to_zero(a, status); + if (v > 0xffffffff) { + res = 0xffffffff; + } else { + return v; + } + set_float_exception_flags(old_exc_flags, status); + float_raise(float_flag_invalid, status); + return res; +} + +/*---------------------------------------------------------------------------- +| Returns the result of converting the quadruple-precision floating-point | value `a' to the single-precision floating-point format. The conversion | is performed according to the IEC/IEEE Standard for Binary Floating-Point | Arithmetic. diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index a09ad0e..f1288ef 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -716,6 +716,7 @@ int64_t float128_to_int64(float128, float_status *status); int64_t float128_to_int64_round_to_zero(float128, float_status *status); uint64_t float128_to_uint64(float128, float_status *status); uint64_t float128_to_uint64_round_to_zero(float128, float_status *status); +uint32_t float128_to_uint32_round_to_zero(float128, float_status *status); float32 float128_to_float32(float128, float_status *status); float64 float128_to_float64(float128, float_status *status); floatx80 float128_to_floatx80(float128, float_status *status);