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 "softfloat-for-gcc.h" 31 #include "milieu.h" 32 #include "softfloat.h" 33 34 #include "aeabi_vfp.h" 35 36 extern int _libc_arm_fpu_present; 37 38 flag __unordsf2(float32, float32); 39 40 /* These are written in asm and are only called from this file */ 41 int __aeabi_fcmpeq_vfp(float32, float32); 42 int __aeabi_fcmplt_vfp(float32, float32); 43 int __aeabi_fcmple_vfp(float32, float32); 44 int __aeabi_fcmpgt_vfp(float32, float32); 45 int __aeabi_fcmpge_vfp(float32, float32); 46 int __aeabi_fcmpun_vfp(float32, float32); 47 int __aeabi_f2iz_vfp(float32); 48 float64 __aeabi_f2d_vfp(float32); 49 float32 __aeabi_i2f_vfp(int); 50 float32 __aeabi_fadd_vfp(float32, float32); 51 float32 __aeabi_fdiv_vfp(float32, float32); 52 float32 __aeabi_fmul_vfp(float32, float32); 53 float32 __aeabi_fsub_vfp(float32, float32); 54 55 /* 56 * Depending on the target these will: 57 * On armv6 with a vfp call the above function, or 58 * Call the softfloat function in the 3rd argument. 59 */ 60 int AEABI_FUNC2(fcmpeq, float32, float32_eq) 61 int AEABI_FUNC2(fcmplt, float32, float32_lt) 62 int AEABI_FUNC2(fcmple, float32, float32_le) 63 int AEABI_FUNC2_REV(fcmpge, float32, float32_le) 64 int AEABI_FUNC2_REV(fcmpgt, float32, float32_lt) 65 int AEABI_FUNC2(fcmpun, float32, __unordsf2) 66 67 int AEABI_FUNC(f2iz, float32, float32_to_int32_round_to_zero) 68 float64 AEABI_FUNC(f2d, float32, float32_to_float64) 69 float32 AEABI_FUNC(i2f, int, int32_to_float32) 70 71 float32 AEABI_FUNC2(fadd, float32, float32_add) 72 float32 AEABI_FUNC2(fdiv, float32, float32_div) 73 float32 AEABI_FUNC2(fmul, float32, float32_mul) 74 float32 AEABI_FUNC2(fsub, float32, float32_sub) 75 76 int 77 __aeabi_cfcmpeq_helper(float32 a, float32 b) 78 { 79 int quiet = 0; 80 81 /* Check if a is a NaN */ 82 if ((a << 1) > 0xff000000u) { 83 /* If it's a signalling NaN we will always signal */ 84 if ((a & 0x00400000u) == 0) 85 return (0); 86 87 quiet = 1; 88 } 89 90 /* Check if b is a NaN */ 91 if ((b << 1) > 0xff000000u) { 92 /* If it's a signalling NaN we will always signal */ 93 if ((b & 0x00400000u) == 0) 94 return (0); 95 96 quiet = 1; 97 } 98 99 return (quiet); 100 } 101