1 #ifndef _INTERNAA_ATOMIC_H
2 #define _INTERNAA_ATOMIC_H
6 static inline int a_ctz_64(uint64_t x)
9 __asm__( "bsf %1,%0" : "=r"(r) : "r"(x) );
14 static inline void a_and_64(volatile uint64_t *p, uint64_t v)
16 __asm__( "lock ; andq %1, %0"
17 : "=m"(*(long *)p) : "r"(v) : "memory" );
20 static inline void a_or_64(volatile uint64_t *p, uint64_t v)
22 __asm__( "lock ; orq %1, %0"
23 : "=m"(*(long *)p) : "r"(v) : "memory" );
26 static inline void a_store_l(volatile void *p, long x)
28 __asm__( "movq %1, %0" : "=m"(*(long *)p) : "r"(x) : "memory" );
31 static inline void a_or_l(volatile void *p, long v)
33 __asm__( "lock ; orq %1, %0"
34 : "=m"(*(long *)p) : "r"(v) : "memory" );
37 static inline void *a_cas_p(volatile void *p, void *t, void *s)
39 __asm__( "lock ; cmpxchg %3, %1"
40 : "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
44 static inline long a_cas_l(volatile void *p, long t, long s)
46 __asm__( "lock ; cmpxchg %3, %1"
47 : "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
51 static inline int a_cas(volatile int *p, int t, int s)
53 __asm__( "lock ; cmpxchgl %3, %1"
54 : "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
58 static inline void *a_swap_p(void *volatile *x, void *v)
60 __asm__( "xchg %0, %1" : "=r"(v), "=m"(*(void **)x) : "0"(v) : "memory" );
63 static inline long a_swap_l(volatile void *x, long v)
65 __asm__( "xchg %0, %1" : "=r"(v), "=m"(*(long *)x) : "0"(v) : "memory" );
69 static inline void a_or(volatile void *p, int v)
71 __asm__( "lock ; orl %1, %0"
72 : "=m"(*(int *)p) : "r"(v) : "memory" );
75 static inline void a_and(volatile void *p, int v)
77 __asm__( "lock ; andl %1, %0"
78 : "=m"(*(int *)p) : "r"(v) : "memory" );
81 static inline int a_swap(volatile int *x, int v)
83 __asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
89 static inline int a_fetch_add(volatile int *x, int v)
91 __asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
95 static inline void a_inc(volatile int *x)
97 __asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
100 static inline void a_dec(volatile int *x)
102 __asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
105 static inline void a_store(volatile int *p, int x)
107 __asm__( "movl %1, %0" : "=m"(*p) : "r"(x) : "memory" );
110 static inline void a_spin()
112 __asm__ __volatile__( "pause" : : : "memory" );