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 __unorddf2(float64, float64);
42
43/* These are written in asm and are only called from this file */
44int __aeabi_dcmpeq_vfp(float64, float64);
45int __aeabi_dcmplt_vfp(float64, float64);
46int __aeabi_dcmple_vfp(float64, float64);
47int __aeabi_dcmpgt_vfp(float64, float64);
48int __aeabi_dcmpge_vfp(float64, float64);
49int __aeabi_dcmpun_vfp(float64, float64);
50int __aeabi_d2iz_vfp(float64);
51float32 __aeabi_d2f_vfp(float64);
52float64 __aeabi_i2d_vfp(int);
53float64 __aeabi_dadd_vfp(float64, float64);
54float64 __aeabi_ddiv_vfp(float64, float64);
55float64 __aeabi_dmul_vfp(float64, float64);
56float64 __aeabi_dsub_vfp(float64, float64);
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(dcmpeq, float64, float64_eq)
64int AEABI_FUNC2(dcmplt, float64, float64_lt)
65int AEABI_FUNC2(dcmple, float64, float64_le)
66int AEABI_FUNC2_REV(dcmpge, float64, float64_le)
67int AEABI_FUNC2_REV(dcmpgt, float64, float64_lt)
68int AEABI_FUNC2(dcmpun, float64, __unorddf2)
69
70int AEABI_FUNC(d2iz, float64, float64_to_int32_round_to_zero)
71float32 AEABI_FUNC(d2f, float64, float64_to_float32)
72float64 AEABI_FUNC(i2d, int, int32_to_float64)
73
74float64 AEABI_FUNC2(dadd, float64, float64_add)
75float64 AEABI_FUNC2(ddiv, float64, float64_div)
76float64 AEABI_FUNC2(dmul, float64, float64_mul)
77float64 AEABI_FUNC2(dsub, float64, float64_sub)
78
79int
80__aeabi_cdcmpeq_helper(float64 a, float64 b)
81{
82	int quiet = 0;
83
84	/* Check if a is a NaN */
85	if ((a << 1) > 0xffe0000000000000ull) {
86		/* If it's a signalling NaN we will always signal */
87		if ((a & 0x0008000000000000ull) == 0)
88			return (0);
89
90		quiet = 1;
91	}
92
93	/* Check if b is a NaN */
94	if ((b << 1) > 0xffe0000000000000ull) {
95		/* If it's a signalling NaN we will always signal */
96		if ((b & 0x0008000000000000ull) == 0)
97			return (0);
98
99		quiet = 1;
100	}
101
102	return (quiet);
103}
104