aeabi_float.c revision 302408
1133094Ssimon/* 2143460Ssimon * Copyright (C) 2012 Andrew Turner 3133094Ssimon * All rights reserved. 4133094Ssimon * 5133094Ssimon * Redistribution and use in source and binary forms, with or without 6133094Ssimon * modification, are permitted provided that the following conditions 7133094Ssimon * are met: 8133094Ssimon * 1. Redistributions of source code must retain the above copyright 9133094Ssimon * notice, this list of conditions and the following disclaimer. 10133094Ssimon * 2. Redistributions in binary form must reproduce the above copyright 11133094Ssimon * notice, this list of conditions and the following disclaimer in the 12133094Ssimon * documentation and/or other materials provided with the distribution. 13133094Ssimon * 14133094Ssimon * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15133094Ssimon * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16133094Ssimon * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17133094Ssimon * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18133094Ssimon * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19133094Ssimon * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20133094Ssimon * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21133094Ssimon * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22133094Ssimon * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23133094Ssimon * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24133094Ssimon * SUCH DAMAGE. 25133094Ssimon * 26133094Ssimon */ 27133094Ssimon 28133094Ssimon#include <sys/cdefs.h> 29133094Ssimon__FBSDID("$FreeBSD: stable/11/lib/libc/arm/aeabi/aeabi_float.c 273088 2014-10-14 14:27:51Z andrew $"); 30133094Ssimon 31133094Ssimon#include "softfloat-for-gcc.h" 32133094Ssimon#include "milieu.h" 33133094Ssimon#include "softfloat.h" 34133094Ssimon 35133094Ssimon#include "aeabi_vfp.h" 36133094Ssimon 37133094Ssimonextern int _libc_arm_fpu_present; 38134652Sbrueffer 39133094Ssimonflag __unordsf2(float32, float32); 40133094Ssimon 41133094Ssimon/* These are written in asm and are only called from this file */ 42133094Ssimonint __aeabi_fcmpeq_vfp(float32, float32); 43135126Sbruefferint __aeabi_fcmplt_vfp(float32, float32); 44133094Ssimonint __aeabi_fcmple_vfp(float32, float32); 45133343Ssimonint __aeabi_fcmpgt_vfp(float32, float32); 46144426Sbruefferint __aeabi_fcmpge_vfp(float32, float32); 47134264Ssimonint __aeabi_fcmpun_vfp(float32, float32); 48134401Ssimonint __aeabi_f2iz_vfp(float32); 49135126Sbruefferfloat64 __aeabi_f2d_vfp(float32); 50133094Ssimonfloat32 __aeabi_i2f_vfp(int); 51134316Sbruefferfloat32 __aeabi_fadd_vfp(float32, float32); 52157648Sbruefferfloat32 __aeabi_fdiv_vfp(float32, float32); 53153665Sbruefferfloat32 __aeabi_fmul_vfp(float32, float32); 54139404Sbruefferfloat32 __aeabi_fsub_vfp(float32, float32); 55133343Ssimon 56150242Sjoel/* 57135126Sbrueffer * Depending on the target these will: 58155296Sbrueffer * On armv6 with a vfp call the above function, or 59133094Ssimon * Call the softfloat function in the 3rd argument. 60135560Speter */ 61133094Ssimonint AEABI_FUNC2(fcmpeq, float32, float32_eq) 62133094Ssimonint AEABI_FUNC2(fcmplt, float32, float32_lt) 63134826Ssimonint AEABI_FUNC2(fcmple, float32, float32_le) 64135126Sbruefferint AEABI_FUNC2_REV(fcmpge, float32, float32_le) 65133094Ssimonint AEABI_FUNC2_REV(fcmpgt, float32, float32_lt) 66135126Sbruefferint AEABI_FUNC2(fcmpun, float32, __unordsf2) 67135126Sbrueffer 68135336Sbruefferint AEABI_FUNC(f2iz, float32, float32_to_int32_round_to_zero) 69134786Sbruefferfloat64 AEABI_FUNC(f2d, float32, float32_to_float64) 70150293Sbruefferfloat32 AEABI_FUNC(i2f, int, int32_to_float32) 71134772Ssimon 72133094Ssimonfloat32 AEABI_FUNC2(fadd, float32, float32_add) 73135143Sbruefferfloat32 AEABI_FUNC2(fdiv, float32, float32_div) 74133778Ssimonfloat32 AEABI_FUNC2(fmul, float32, float32_mul) 75135120Ssimonfloat32 AEABI_FUNC2(fsub, float32, float32_sub) 76149874Sbrueffer 77133343Ssimonint 78134772Ssimon__aeabi_cfcmpeq_helper(float32 a, float32 b) 79135126Sbrueffer{ 80133343Ssimon int quiet = 0; 81134218Sbrueffer 82135126Sbrueffer /* Check if a is a NaN */ 83134273Sbrueffer if ((a << 1) > 0xff000000u) { 84157274Sbrueffer /* If it's a signalling NaN we will always signal */ 85135126Sbrueffer if ((a & 0x00400000u) == 0) 86135126Sbrueffer return (0); 87159606Sbrueffer 88133094Ssimon quiet = 1; 89134047Ssimon } 90133457Ssimon 91138967Sbrueffer /* Check if b is a NaN */ 92135143Sbrueffer if ((b << 1) > 0xff000000u) { 93135081Sbrueffer /* If it's a signalling NaN we will always signal */ 94133343Ssimon if ((b & 0x00400000u) == 0) 95146397Sbrueffer return (0); 96133343Ssimon 97141288Sbrueffer quiet = 1; 98135143Sbrueffer } 99143338Ssimon 100143783Sbrueffer return (quiet); 101158111Sbrueffer} 102134316Sbrueffer