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| 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 |