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 __unordsf2(float32, float32); 40 41 /* These are written in asm and are only called from this file */ 42 int __aeabi_fcmpeq_vfp(float32, float32); 43 int __aeabi_fcmplt_vfp(float32, float32); 44 int __aeabi_fcmple_vfp(float32, float32); 45 int __aeabi_fcmpgt_vfp(float32, float32); 46 int __aeabi_fcmpge_vfp(float32, float32); 47 int __aeabi_fcmpun_vfp(float32, float32); 48 int __aeabi_f2iz_vfp(float32); 49 float64 __aeabi_f2d_vfp(float32); 50 float32 __aeabi_i2f_vfp(int); 51 float32 __aeabi_fadd_vfp(float32, float32); 52 float32 __aeabi_fdiv_vfp(float32, float32); 53 float32 __aeabi_fmul_vfp(float32, float32); 54 float32 __aeabi_fsub_vfp(float32, float32); 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(fcmpeq, float32, float32_eq) 62 int AEABI_FUNC2(fcmplt, float32, float32_lt) 63 int AEABI_FUNC2(fcmple, float32, float32_le) 64 int AEABI_FUNC2_REV(fcmpge, float32, float32_le) 65 int AEABI_FUNC2_REV(fcmpgt, float32, float32_lt) 66 int AEABI_FUNC2(fcmpun, float32, __unordsf2) 67 68 int AEABI_FUNC(f2iz, float32, float32_to_int32_round_to_zero) 69 float64 AEABI_FUNC(f2d, float32, float32_to_float64) 70 float32 AEABI_FUNC(i2f, int, int32_to_float32) 71 72 float32 AEABI_FUNC2(fadd, float32, float32_add) 73 float32 AEABI_FUNC2(fdiv, float32, float32_div) 74 float32 AEABI_FUNC2(fmul, float32, float32_mul) 75 float32 AEABI_FUNC2(fsub, float32, float32_sub) 76 77 int 78 __aeabi_cfcmpeq_helper(float32 a, float32 b) 79 { 80 int quiet = 0; 81 82 /* Check if a is a NaN */ 83 if ((a << 1) > 0xff000000u) { 84 /* If it's a signalling NaN we will always signal */ 85 if ((a & 0x00400000u) == 0) 86 return (0); 87 88 quiet = 1; 89 } 90 91 /* Check if b is a NaN */ 92 if ((b << 1) > 0xff000000u) { 93 /* If it's a signalling NaN we will always signal */ 94 if ((b & 0x00400000u) == 0) 95 return (0); 96 97 quiet = 1; 98 } 99 100 return (quiet); 101 } 102