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 armv7 with a vfp call the above function, or
58 * Call the softfloat function in the 3rd argument.
59 */
AEABI_FUNC2(fcmpeq,float32,float32_eq)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