Root/include/asm-generic/atomic-long.h

1#ifndef _ASM_GENERIC_ATOMIC_LONG_H
2#define _ASM_GENERIC_ATOMIC_LONG_H
3/*
4 * Copyright (C) 2005 Silicon Graphics, Inc.
5 * Christoph Lameter
6 *
7 * Allows to provide arch independent atomic definitions without the need to
8 * edit all arch specific atomic.h files.
9 */
10
11#include <asm/types.h>
12
13/*
14 * Suppport for atomic_long_t
15 *
16 * Casts for parameters are avoided for existing atomic functions in order to
17 * avoid issues with cast-as-lval under gcc 4.x and other limitations that the
18 * macros of a platform may have.
19 */
20
21#if BITS_PER_LONG == 64
22
23typedef atomic64_t atomic_long_t;
24
25#define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
26
27static inline long atomic_long_read(atomic_long_t *l)
28{
29    atomic64_t *v = (atomic64_t *)l;
30
31    return (long)atomic64_read(v);
32}
33
34static inline void atomic_long_set(atomic_long_t *l, long i)
35{
36    atomic64_t *v = (atomic64_t *)l;
37
38    atomic64_set(v, i);
39}
40
41static inline void atomic_long_inc(atomic_long_t *l)
42{
43    atomic64_t *v = (atomic64_t *)l;
44
45    atomic64_inc(v);
46}
47
48static inline void atomic_long_dec(atomic_long_t *l)
49{
50    atomic64_t *v = (atomic64_t *)l;
51
52    atomic64_dec(v);
53}
54
55static inline void atomic_long_add(long i, atomic_long_t *l)
56{
57    atomic64_t *v = (atomic64_t *)l;
58
59    atomic64_add(i, v);
60}
61
62static inline void atomic_long_sub(long i, atomic_long_t *l)
63{
64    atomic64_t *v = (atomic64_t *)l;
65
66    atomic64_sub(i, v);
67}
68
69static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
70{
71    atomic64_t *v = (atomic64_t *)l;
72
73    return atomic64_sub_and_test(i, v);
74}
75
76static inline int atomic_long_dec_and_test(atomic_long_t *l)
77{
78    atomic64_t *v = (atomic64_t *)l;
79
80    return atomic64_dec_and_test(v);
81}
82
83static inline int atomic_long_inc_and_test(atomic_long_t *l)
84{
85    atomic64_t *v = (atomic64_t *)l;
86
87    return atomic64_inc_and_test(v);
88}
89
90static inline int atomic_long_add_negative(long i, atomic_long_t *l)
91{
92    atomic64_t *v = (atomic64_t *)l;
93
94    return atomic64_add_negative(i, v);
95}
96
97static inline long atomic_long_add_return(long i, atomic_long_t *l)
98{
99    atomic64_t *v = (atomic64_t *)l;
100
101    return (long)atomic64_add_return(i, v);
102}
103
104static inline long atomic_long_sub_return(long i, atomic_long_t *l)
105{
106    atomic64_t *v = (atomic64_t *)l;
107
108    return (long)atomic64_sub_return(i, v);
109}
110
111static inline long atomic_long_inc_return(atomic_long_t *l)
112{
113    atomic64_t *v = (atomic64_t *)l;
114
115    return (long)atomic64_inc_return(v);
116}
117
118static inline long atomic_long_dec_return(atomic_long_t *l)
119{
120    atomic64_t *v = (atomic64_t *)l;
121
122    return (long)atomic64_dec_return(v);
123}
124
125static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
126{
127    atomic64_t *v = (atomic64_t *)l;
128
129    return (long)atomic64_add_unless(v, a, u);
130}
131
132#define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l))
133
134#define atomic_long_cmpxchg(l, old, new) \
135    (atomic64_cmpxchg((atomic64_t *)(l), (old), (new)))
136#define atomic_long_xchg(v, new) \
137    (atomic64_xchg((atomic64_t *)(v), (new)))
138
139#else /* BITS_PER_LONG == 64 */
140
141typedef atomic_t atomic_long_t;
142
143#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
144static inline long atomic_long_read(atomic_long_t *l)
145{
146    atomic_t *v = (atomic_t *)l;
147
148    return (long)atomic_read(v);
149}
150
151static inline void atomic_long_set(atomic_long_t *l, long i)
152{
153    atomic_t *v = (atomic_t *)l;
154
155    atomic_set(v, i);
156}
157
158static inline void atomic_long_inc(atomic_long_t *l)
159{
160    atomic_t *v = (atomic_t *)l;
161
162    atomic_inc(v);
163}
164
165static inline void atomic_long_dec(atomic_long_t *l)
166{
167    atomic_t *v = (atomic_t *)l;
168
169    atomic_dec(v);
170}
171
172static inline void atomic_long_add(long i, atomic_long_t *l)
173{
174    atomic_t *v = (atomic_t *)l;
175
176    atomic_add(i, v);
177}
178
179static inline void atomic_long_sub(long i, atomic_long_t *l)
180{
181    atomic_t *v = (atomic_t *)l;
182
183    atomic_sub(i, v);
184}
185
186static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
187{
188    atomic_t *v = (atomic_t *)l;
189
190    return atomic_sub_and_test(i, v);
191}
192
193static inline int atomic_long_dec_and_test(atomic_long_t *l)
194{
195    atomic_t *v = (atomic_t *)l;
196
197    return atomic_dec_and_test(v);
198}
199
200static inline int atomic_long_inc_and_test(atomic_long_t *l)
201{
202    atomic_t *v = (atomic_t *)l;
203
204    return atomic_inc_and_test(v);
205}
206
207static inline int atomic_long_add_negative(long i, atomic_long_t *l)
208{
209    atomic_t *v = (atomic_t *)l;
210
211    return atomic_add_negative(i, v);
212}
213
214static inline long atomic_long_add_return(long i, atomic_long_t *l)
215{
216    atomic_t *v = (atomic_t *)l;
217
218    return (long)atomic_add_return(i, v);
219}
220
221static inline long atomic_long_sub_return(long i, atomic_long_t *l)
222{
223    atomic_t *v = (atomic_t *)l;
224
225    return (long)atomic_sub_return(i, v);
226}
227
228static inline long atomic_long_inc_return(atomic_long_t *l)
229{
230    atomic_t *v = (atomic_t *)l;
231
232    return (long)atomic_inc_return(v);
233}
234
235static inline long atomic_long_dec_return(atomic_long_t *l)
236{
237    atomic_t *v = (atomic_t *)l;
238
239    return (long)atomic_dec_return(v);
240}
241
242static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
243{
244    atomic_t *v = (atomic_t *)l;
245
246    return (long)atomic_add_unless(v, a, u);
247}
248
249#define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l))
250
251#define atomic_long_cmpxchg(l, old, new) \
252    (atomic_cmpxchg((atomic_t *)(l), (old), (new)))
253#define atomic_long_xchg(v, new) \
254    (atomic_xchg((atomic_t *)(v), (new)))
255
256#endif /* BITS_PER_LONG == 64 */
257
258#endif /* _ASM_GENERIC_ATOMIC_LONG_H */
259

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