From mboxrd@z Thu Jan 1 00:00:00 1970 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! Violators will be prosecuted for from ; Fri, 10 Feb 2017 17:24:16 +1000 From: Bharata B Rao Date: Fri, 10 Feb 2017 12:53:07 +0530 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> Message-Id: <1486711391-12247-4-git-send-email-bharata@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 3/7] softfloat: Add float128_to_uint32_round_to_zero() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, rth@twiddle.net, nikunj@linux.vnet.ibm.com, Bharata B Rao 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); -- 2.7.4