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
23 typedef atomic64_t atomic_long_t;
24
25 #define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
26 #define ATOMIC_LONG_PFX(x) atomic64 ## x
27
28 #else
29
30 typedef atomic_t atomic_long_t;
31
32 #define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
33 #define ATOMIC_LONG_PFX(x) atomic ## x
34
35 #endif
36
37 #define ATOMIC_LONG_READ_OP(mo) \
38 static inline long atomic_long_read##mo(const atomic_long_t *l) \
39 { \
40 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
41 \
42 return (long)ATOMIC_LONG_PFX(_read##mo)(v); \
43 }
44 ATOMIC_LONG_READ_OP()
ATOMIC_LONG_READ_OP(_acquire)45 ATOMIC_LONG_READ_OP(_acquire)
46
47 #undef ATOMIC_LONG_READ_OP
48
49 #define ATOMIC_LONG_SET_OP(mo) \
50 static inline void atomic_long_set##mo(atomic_long_t *l, long i) \
51 { \
52 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
53 \
54 ATOMIC_LONG_PFX(_set##mo)(v, i); \
55 }
56 ATOMIC_LONG_SET_OP()
57 ATOMIC_LONG_SET_OP(_release)
58
59 #undef ATOMIC_LONG_SET_OP
60
61 #define ATOMIC_LONG_ADD_SUB_OP(op, mo) \
62 static inline long \
63 atomic_long_##op##_return##mo(long i, atomic_long_t *l) \
64 { \
65 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
66 \
67 return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(i, v); \
68 }
69 ATOMIC_LONG_ADD_SUB_OP(add,)
70 ATOMIC_LONG_ADD_SUB_OP(add, _relaxed)
71 ATOMIC_LONG_ADD_SUB_OP(add, _acquire)
72 ATOMIC_LONG_ADD_SUB_OP(add, _release)
73 ATOMIC_LONG_ADD_SUB_OP(sub,)
74 ATOMIC_LONG_ADD_SUB_OP(sub, _relaxed)
75 ATOMIC_LONG_ADD_SUB_OP(sub, _acquire)
76 ATOMIC_LONG_ADD_SUB_OP(sub, _release)
77
78 #undef ATOMIC_LONG_ADD_SUB_OP
79
80 #define atomic_long_cmpxchg_relaxed(l, old, new) \
81 (ATOMIC_LONG_PFX(_cmpxchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(l), \
82 (old), (new)))
83 #define atomic_long_cmpxchg_acquire(l, old, new) \
84 (ATOMIC_LONG_PFX(_cmpxchg_acquire)((ATOMIC_LONG_PFX(_t) *)(l), \
85 (old), (new)))
86 #define atomic_long_cmpxchg_release(l, old, new) \
87 (ATOMIC_LONG_PFX(_cmpxchg_release)((ATOMIC_LONG_PFX(_t) *)(l), \
88 (old), (new)))
89 #define atomic_long_cmpxchg(l, old, new) \
90 (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))
91
92 #define atomic_long_xchg_relaxed(v, new) \
93 (ATOMIC_LONG_PFX(_xchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
94 #define atomic_long_xchg_acquire(v, new) \
95 (ATOMIC_LONG_PFX(_xchg_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
96 #define atomic_long_xchg_release(v, new) \
97 (ATOMIC_LONG_PFX(_xchg_release)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
98 #define atomic_long_xchg(v, new) \
99 (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
100
101 static inline void atomic_long_inc(atomic_long_t *l)
102 {
103 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
104
105 ATOMIC_LONG_PFX(_inc)(v);
106 }
107
atomic_long_dec(atomic_long_t * l)108 static inline void atomic_long_dec(atomic_long_t *l)
109 {
110 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
111
112 ATOMIC_LONG_PFX(_dec)(v);
113 }
114
115 #define ATOMIC_LONG_OP(op) \
116 static inline void \
117 atomic_long_##op(long i, atomic_long_t *l) \
118 { \
119 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
120 \
121 ATOMIC_LONG_PFX(_##op)(i, v); \
122 }
123
124 ATOMIC_LONG_OP(add)
ATOMIC_LONG_OP(sub)125 ATOMIC_LONG_OP(sub)
126 ATOMIC_LONG_OP(and)
127 ATOMIC_LONG_OP(or)
128 ATOMIC_LONG_OP(xor)
129 ATOMIC_LONG_OP(andnot)
130
131 #undef ATOMIC_LONG_OP
132
133 static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
134 {
135 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
136
137 return ATOMIC_LONG_PFX(_sub_and_test)(i, v);
138 }
139
atomic_long_dec_and_test(atomic_long_t * l)140 static inline int atomic_long_dec_and_test(atomic_long_t *l)
141 {
142 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
143
144 return ATOMIC_LONG_PFX(_dec_and_test)(v);
145 }
146
atomic_long_inc_and_test(atomic_long_t * l)147 static inline int atomic_long_inc_and_test(atomic_long_t *l)
148 {
149 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
150
151 return ATOMIC_LONG_PFX(_inc_and_test)(v);
152 }
153
atomic_long_add_negative(long i,atomic_long_t * l)154 static inline int atomic_long_add_negative(long i, atomic_long_t *l)
155 {
156 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
157
158 return ATOMIC_LONG_PFX(_add_negative)(i, v);
159 }
160
161 #define ATOMIC_LONG_INC_DEC_OP(op, mo) \
162 static inline long \
163 atomic_long_##op##_return##mo(atomic_long_t *l) \
164 { \
165 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
166 \
167 return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(v); \
168 }
169 ATOMIC_LONG_INC_DEC_OP(inc,)
ATOMIC_LONG_INC_DEC_OP(inc,_relaxed)170 ATOMIC_LONG_INC_DEC_OP(inc, _relaxed)
171 ATOMIC_LONG_INC_DEC_OP(inc, _acquire)
172 ATOMIC_LONG_INC_DEC_OP(inc, _release)
173 ATOMIC_LONG_INC_DEC_OP(dec,)
174 ATOMIC_LONG_INC_DEC_OP(dec, _relaxed)
175 ATOMIC_LONG_INC_DEC_OP(dec, _acquire)
176 ATOMIC_LONG_INC_DEC_OP(dec, _release)
177
178 #undef ATOMIC_LONG_INC_DEC_OP
179
180 static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
181 {
182 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
183
184 return (long)ATOMIC_LONG_PFX(_add_unless)(v, a, u);
185 }
186
187 #define atomic_long_inc_not_zero(l) \
188 ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l))
189
190 #endif /* _ASM_GENERIC_ATOMIC_LONG_H */
191