1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
/* Internal libc stuff for floating point environment routines. e500 version.
Copyright (C) 2004-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _FENV_LIBC_H
#define _FENV_LIBC_H 1
#include <fenv.h>
int __feraiseexcept_spe (int);
libm_hidden_proto (__feraiseexcept_spe)
int __feraiseexcept_soft (int);
libc_hidden_proto (__feraiseexcept_soft)
int __fexcepts_to_spe (int);
libm_hidden_proto (__fexcepts_to_spe)
int __fexcepts_from_spe (int);
libm_hidden_proto (__fexcepts_from_spe)
int __fexcepts_to_prctl (int);
libm_hidden_proto (__fexcepts_to_prctl)
int __fexcepts_from_prctl (int);
libm_hidden_proto (__fexcepts_from_prctl)
void __fe_note_change (void);
libm_hidden_proto (__fe_note_change)
/* Equivalent to fegetenv, but returns an unsigned int instead of
taking a pointer. */
#define fegetenv_register() \
({ unsigned int fscr; asm volatile ("mfspefscr %0" : "=r" (fscr)); fscr; })
/* Equivalent to fesetenv, but takes an unsigned int instead of a
pointer. */
#define fesetenv_register(fscr) \
({ asm volatile ("mtspefscr %0" : : "r" (fscr)); })
typedef union
{
fenv_t fenv;
unsigned int l[2];
} fenv_union_t;
/* Definitions of all the SPEFSCR bit numbers. */
enum {
SPEFSCR_SOVH = 0x80000000,
SPEFSCR_OVH = 0x40000000,
SPEFSCR_FGH = 0x20000000,
SPEFSCR_FXH = 0x10000000,
SPEFSCR_FINVH = 0x08000000,
SPEFSCR_FDBZH = 0x04000000,
SPEFSCR_FUNFH = 0x02000000,
SPEFSCR_FOVFH = 0x01000000,
/* 2 unused bits. */
SPEFSCR_FINXS = 0x00200000,
SPEFSCR_FINVS = 0x00100000,
SPEFSCR_FDBZS = 0x00080000,
SPEFSCR_FUNFS = 0x00040000,
SPEFSCR_FOVFS = 0x00020000,
/* Combination of the exception bits. */
SPEFSCR_ALL_EXCEPT = 0x003e0000,
SPEFSCR_MODE = 0x00010000,
SPEFSCR_SOV = 0x00008000,
SPEFSCR_OV = 0x00004000,
SPEFSCR_FG = 0x00002000,
SPEFSCR_FX = 0x00001000,
SPEFSCR_FINV = 0x00000800,
SPEFSCR_FDBZ = 0x00000400,
SPEFSCR_FUNF = 0x00000200,
SPEFSCR_FOVF = 0x00000100,
/* 1 unused bit. */
SPEFSCR_FINXE = 0x00000040,
SPEFSCR_FINVE = 0x00000020,
SPEFSCR_FDBZE = 0x00000010,
SPEFSCR_FUNFE = 0x00000008,
SPEFSCR_FOVFE = 0x00000004,
/* Combination of the exception trap enable bits. */
SPEFSCR_ALL_EXCEPT_ENABLE = 0x0000007c,
SPEFSCR_FRMC = 0x00000003
};
#endif /* fenv_libc.h */
|
