blob: cdf11614a1712552277578ce5f0b4c4fc5e54c55 (
plain)
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
100
101
102
103
|
/*
* Copyright (c) 2018 Richard Braun.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* Isolated type definition used to avoid inclusion circular dependencies.
*/
#ifndef KERN_ATOMIC_TYPES_H
#define KERN_ATOMIC_TYPES_H
/*
* After function selection, type genericity is achieved with transparent
* unions, a GCC extension. Here are a few things to keep in mind :
* - all members must have the same representation
* - calling conventions are inferred from the first member
*/
#ifdef __LP64__
union atomic_ptr_32 {
int *i_ptr;
unsigned int *ui_ptr;
} __attribute__((transparent_union));
union atomic_constptr_32 {
const int *i_ptr;
const unsigned int *ui_ptr;
} __attribute__((transparent_union));
union atomic_val32 {
int i;
unsigned int ui;
} __attribute__((transparent_union));
union atomic_ptr_64 {
void *ptr;
unsigned long long *ull_ptr;
} __attribute__((transparent_union));
union atomic_constptr_64 {
const void *ptr;
const unsigned long long *ull_ptr;
} __attribute__((transparent_union));
union atomic_val_64 {
void *ptr;
long l;
unsigned long ul;
long long ll;
unsigned long long ull;
} __attribute__((transparent_union));
#else /* __LP64__ */
union atomic_ptr_32 {
void *ptr;
unsigned int *ui_ptr;
} __attribute__((transparent_union));
union atomic_constptr_32 {
const void *ptr;
const unsigned int *ui_ptr;
} __attribute__((transparent_union));
union atomic_val32 {
void *ptr;
int i;
unsigned int ui;
long l;
unsigned long ul;
} __attribute__((transparent_union));
union atomic_ptr_64 {
long long *ll_ptr;
unsigned long long *ull_ptr;
} __attribute__((transparent_union));
union atomic_constptr_64 {
const long long *ll_ptr;
const unsigned long long *ull_ptr;
} __attribute__((transparent_union));
union atomic_val_64 {
long long ll;
unsigned long long ull;
} __attribute__((transparent_union));
#endif /* __LP64__ */
#endif /* KERN_ATOMIC_TYPES_H */
|
