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28 | 28 | ||
29 | #ifndef __ia64_ATOMIC_H__ |
29 | #ifndef __ia64_ATOMIC_H__ |
30 | #define __ia64_ATOMIC_H__ |
30 | #define __ia64_ATOMIC_H__ |
31 | 31 | ||
32 | #include <arch/types.h> |
32 | #include <arch/types.h> |
- | 33 | #include <typedefs.h> |
|
33 | 34 | ||
34 | typedef struct { volatile __u64 count; } atomic_t; |
- | |
35 | 35 | ||
36 | /** Atomic addition. |
36 | /** Atomic addition. |
37 | * |
37 | * |
38 | * @param val Atomic value. |
38 | * @param val Atomic value. |
39 | * @param imm Value to add. |
39 | * @param imm Value to add. |
40 | * |
40 | * |
41 | * @return Value before addition. |
41 | * @return Value before addition. |
42 | */ |
42 | */ |
43 | static inline count_t atomic_add(atomic_t *val, int imm) |
43 | static inline long atomic_add(atomic_t *val, int imm) |
44 | { |
44 | { |
45 | count_t v; |
45 | long v; |
46 | 46 | ||
47 | __asm__ volatile ("fetchadd8.rel %0 = %1, %2\n" : "=r" (v), "+m" (val->count) : "i" (imm)); |
47 | __asm__ volatile ("fetchadd8.rel %0 = %1, %2\n" : "=r" (v), "+m" (val->count) : "i" (imm)); |
48 | 48 | ||
49 | return v; |
49 | return v; |
50 | } |
50 | } |
51 | 51 | ||
52 | static inline void atomic_set(atomic_t *val, __u64 i) |
- | |
53 | { |
- | |
54 | val->count = i; |
- | |
55 | } |
- | |
56 | - | ||
57 | static inline __u32 atomic_get(atomic_t *val) |
- | |
58 | { |
- | |
59 | return val->count; |
- | |
60 | } |
- | |
61 | - | ||
62 | static inline void atomic_inc(atomic_t *val) { atomic_add(val, 1); } |
52 | static inline void atomic_inc(atomic_t *val) { atomic_add(val, 1); } |
63 | static inline void atomic_dec(atomic_t *val) { atomic_add(val, -1); } |
53 | static inline void atomic_dec(atomic_t *val) { atomic_add(val, -1); } |
64 | 54 | ||
65 | static inline count_t atomic_preinc(atomic_t *val) { return atomic_add(val, 1) + 1; } |
55 | static inline long atomic_preinc(atomic_t *val) { return atomic_add(val, 1) + 1; } |
66 | static inline count_t atomic_predec(atomic_t *val) { return atomic_add(val, -1) - 1; } |
56 | static inline long atomic_predec(atomic_t *val) { return atomic_add(val, -1) - 1; } |
67 | 57 | ||
68 | static inline count_t atomic_postinc(atomic_t *val) { return atomic_add(val, 1); } |
58 | static inline long atomic_postinc(atomic_t *val) { return atomic_add(val, 1); } |
69 | static inline count_t atomic_postdec(atomic_t *val) { return atomic_add(val, -1); } |
59 | static inline long atomic_postdec(atomic_t *val) { return atomic_add(val, -1); } |
70 | 60 | ||
71 | #endif |
61 | #endif |