1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 2012 Andrew Turner 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 */ 29 30 #include <sys/cdefs.h> 31 #include "softfloat-for-gcc.h" 32 #include "milieu.h" 33 #include "softfloat.h" 34 35 #include "aeabi_vfp.h" 36 37 extern int _libc_arm_fpu_present; 38 39 flag __unorddf2(float64, float64); 40 41 /* These are written in asm and are only called from this file */ 42 int __aeabi_dcmpeq_vfp(float64, float64); 43 int __aeabi_dcmplt_vfp(float64, float64); 44 int __aeabi_dcmple_vfp(float64, float64); 45 int __aeabi_dcmpgt_vfp(float64, float64); 46 int __aeabi_dcmpge_vfp(float64, float64); 47 int __aeabi_dcmpun_vfp(float64, float64); 48 int __aeabi_d2iz_vfp(float64); 49 float32 __aeabi_d2f_vfp(float64); 50 float64 __aeabi_i2d_vfp(int); 51 float64 __aeabi_dadd_vfp(float64, float64); 52 float64 __aeabi_ddiv_vfp(float64, float64); 53 float64 __aeabi_dmul_vfp(float64, float64); 54 float64 __aeabi_dsub_vfp(float64, float64); 55 56 /* 57 * Depending on the target these will: 58 * On armv6 with a vfp call the above function, or 59 * Call the softfloat function in the 3rd argument. 60 */ 61 int AEABI_FUNC2(dcmpeq, float64, float64_eq) 62 int AEABI_FUNC2(dcmplt, float64, float64_lt) 63 int AEABI_FUNC2(dcmple, float64, float64_le) 64 int AEABI_FUNC2_REV(dcmpge, float64, float64_le) 65 int AEABI_FUNC2_REV(dcmpgt, float64, float64_lt) 66 int AEABI_FUNC2(dcmpun, float64, __unorddf2) 67 68 int AEABI_FUNC(d2iz, float64, float64_to_int32_round_to_zero) 69 float32 AEABI_FUNC(d2f, float64, float64_to_float32) 70 float64 AEABI_FUNC(i2d, int, int32_to_float64) 71 72 float64 AEABI_FUNC2(dadd, float64, float64_add) 73 float64 AEABI_FUNC2(ddiv, float64, float64_div) 74 float64 AEABI_FUNC2(dmul, float64, float64_mul) 75 float64 AEABI_FUNC2(dsub, float64, float64_sub) 76 77 int 78 __aeabi_cdcmpeq_helper(float64 a, float64 b) 79 { 80 int quiet = 0; 81 82 /* Check if a is a NaN */ 83 if ((a << 1) > 0xffe0000000000000ull) { 84 /* If it's a signalling NaN we will always signal */ 85 if ((a & 0x0008000000000000ull) == 0) 86 return (0); 87 88 quiet = 1; 89 } 90 91 /* Check if b is a NaN */ 92 if ((b << 1) > 0xffe0000000000000ull) { 93 /* If it's a signalling NaN we will always signal */ 94 if ((b & 0x0008000000000000ull) == 0) 95 return (0); 96 97 quiet = 1; 98 } 99 100 return (quiet); 101 } 102