1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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__FBSDID("$FreeBSD$");
32
33#include "softfloat-for-gcc.h"
34#include "milieu.h"
35#include "softfloat.h"
36
37#include "aeabi_vfp.h"
38
39extern int _libc_arm_fpu_present;
40
41flag __unordsf2(float32, float32);
42
43/* These are written in asm and are only called from this file */
44int __aeabi_fcmpeq_vfp(float32, float32);
45int __aeabi_fcmplt_vfp(float32, float32);
46int __aeabi_fcmple_vfp(float32, float32);
47int __aeabi_fcmpgt_vfp(float32, float32);
48int __aeabi_fcmpge_vfp(float32, float32);
49int __aeabi_fcmpun_vfp(float32, float32);
50int __aeabi_f2iz_vfp(float32);
51float64 __aeabi_f2d_vfp(float32);
52float32 __aeabi_i2f_vfp(int);
53float32 __aeabi_fadd_vfp(float32, float32);
54float32 __aeabi_fdiv_vfp(float32, float32);
55float32 __aeabi_fmul_vfp(float32, float32);
56float32 __aeabi_fsub_vfp(float32, float32);
57
58/*
59 * Depending on the target these will:
60 *  On armv6 with a vfp call the above function, or
61 *  Call the softfloat function in the 3rd argument.
62 */
63int AEABI_FUNC2(fcmpeq, float32, float32_eq)
64int AEABI_FUNC2(fcmplt, float32, float32_lt)
65int AEABI_FUNC2(fcmple, float32, float32_le)
66int AEABI_FUNC2_REV(fcmpge, float32, float32_le)
67int AEABI_FUNC2_REV(fcmpgt, float32, float32_lt)
68int AEABI_FUNC2(fcmpun, float32, __unordsf2)
69
70int AEABI_FUNC(f2iz, float32, float32_to_int32_round_to_zero)
71float64 AEABI_FUNC(f2d, float32, float32_to_float64)
72float32 AEABI_FUNC(i2f, int, int32_to_float32)
73
74float32 AEABI_FUNC2(fadd, float32, float32_add)
75float32 AEABI_FUNC2(fdiv, float32, float32_div)
76float32 AEABI_FUNC2(fmul, float32, float32_mul)
77float32 AEABI_FUNC2(fsub, float32, float32_sub)
78
79int
80__aeabi_cfcmpeq_helper(float32 a, float32 b)
81{
82	int quiet = 0;
83
84	/* Check if a is a NaN */
85	if ((a << 1) > 0xff000000u) {
86		/* If it's a signalling NaN we will always signal */
87		if ((a & 0x00400000u) == 0)
88			return (0);
89
90		quiet = 1;
91	}
92
93	/* Check if b is a NaN */
94	if ((b << 1) > 0xff000000u) {
95		/* If it's a signalling NaN we will always signal */
96		if ((b & 0x00400000u) == 0)
97			return (0);
98
99		quiet = 1;
100	}
101
102	return (quiet);
103}
104