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 __unorddf2(float64, float64);
39
40 /* These are written in asm and are only called from this file */
41 int __aeabi_dcmpeq_vfp(float64, float64);
42 int __aeabi_dcmplt_vfp(float64, float64);
43 int __aeabi_dcmple_vfp(float64, float64);
44 int __aeabi_dcmpgt_vfp(float64, float64);
45 int __aeabi_dcmpge_vfp(float64, float64);
46 int __aeabi_dcmpun_vfp(float64, float64);
47 int __aeabi_d2iz_vfp(float64);
48 float32 __aeabi_d2f_vfp(float64);
49 float64 __aeabi_i2d_vfp(int);
50 float64 __aeabi_dadd_vfp(float64, float64);
51 float64 __aeabi_ddiv_vfp(float64, float64);
52 float64 __aeabi_dmul_vfp(float64, float64);
53 float64 __aeabi_dsub_vfp(float64, float64);
54
55 /*
56 * Depending on the target these will:
57 * On armv7 with a vfp call the above function, or
58 * Call the softfloat function in the 3rd argument.
59 */
AEABI_FUNC2(dcmpeq,float64,float64_eq)60 int AEABI_FUNC2(dcmpeq, float64, float64_eq)
61 int AEABI_FUNC2(dcmplt, float64, float64_lt)
62 int AEABI_FUNC2(dcmple, float64, float64_le)
63 int AEABI_FUNC2_REV(dcmpge, float64, float64_le)
64 int AEABI_FUNC2_REV(dcmpgt, float64, float64_lt)
65 int AEABI_FUNC2(dcmpun, float64, __unorddf2)
66
67 int AEABI_FUNC(d2iz, float64, float64_to_int32_round_to_zero)
68 float32 AEABI_FUNC(d2f, float64, float64_to_float32)
69 float64 AEABI_FUNC(i2d, int, int32_to_float64)
70
71 float64 AEABI_FUNC2(dadd, float64, float64_add)
72 float64 AEABI_FUNC2(ddiv, float64, float64_div)
73 float64 AEABI_FUNC2(dmul, float64, float64_mul)
74 float64 AEABI_FUNC2(dsub, float64, float64_sub)
75
76 int
77 __aeabi_cdcmpeq_helper(float64 a, float64 b)
78 {
79 int quiet = 0;
80
81 /* Check if a is a NaN */
82 if ((a << 1) > 0xffe0000000000000ull) {
83 /* If it's a signalling NaN we will always signal */
84 if ((a & 0x0008000000000000ull) == 0)
85 return (0);
86
87 quiet = 1;
88 }
89
90 /* Check if b is a NaN */
91 if ((b << 1) > 0xffe0000000000000ull) {
92 /* If it's a signalling NaN we will always signal */
93 if ((b & 0x0008000000000000ull) == 0)
94 return (0);
95
96 quiet = 1;
97 }
98
99 return (quiet);
100 }
101