1 #ifndef _INTERNAL_ATOMIC_H
2 #define _INTERNAL_ATOMIC_H
6 static inline int a_ctz_64(uint64_t x)
8 __asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
12 static inline int a_ctz_l(unsigned long x)
14 __asm__( "bsf %1,%0" : "=r"(x) : "r"(x) );
18 static inline void a_and_64(volatile uint64_t *p, uint64_t v)
20 __asm__( "lock ; and %1, %0"
21 : "=m"(*p) : "r"(v) : "memory" );
24 static inline void a_or_64(volatile uint64_t *p, uint64_t v)
26 __asm__( "lock ; or %1, %0"
27 : "=m"(*p) : "r"(v) : "memory" );
30 static inline void a_store_l(volatile void *p, long x)
32 __asm__( "mov %1, %0" : "=m"(*(long *)p) : "r"(x) : "memory" );
35 static inline void a_or_l(volatile void *p, long v)
37 __asm__( "lock ; or %1, %0"
38 : "=m"(*(long *)p) : "r"(v) : "memory" );
41 static inline void *a_cas_p(volatile void *p, void *t, void *s)
43 __asm__( "lock ; cmpxchg %3, %1"
44 : "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
48 static inline long a_cas_l(volatile void *p, long t, long s)
50 __asm__( "lock ; cmpxchg %3, %1"
51 : "=a"(t), "=m"(*(long *)p) : "a"(t), "r"(s) : "memory" );
55 static inline int a_cas(volatile int *p, int t, int s)
57 __asm__( "lock ; cmpxchg %3, %1"
58 : "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
62 static inline void *a_swap_p(void *volatile *x, void *v)
64 __asm__( "xchg %0, %1" : "=r"(v), "=m"(*(void **)x) : "0"(v) : "memory" );
67 static inline long a_swap_l(volatile void *x, long v)
69 __asm__( "xchg %0, %1" : "=r"(v), "=m"(*(long *)x) : "0"(v) : "memory" );
73 static inline void a_or(volatile void *p, int v)
75 __asm__( "lock ; or %1, %0"
76 : "=m"(*(int *)p) : "r"(v) : "memory" );
79 static inline void a_and(volatile void *p, int v)
81 __asm__( "lock ; and %1, %0"
82 : "=m"(*(int *)p) : "r"(v) : "memory" );
85 static inline int a_swap(volatile int *x, int v)
87 __asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
93 static inline int a_fetch_add(volatile int *x, int v)
95 __asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
99 static inline void a_inc(volatile int *x)
101 __asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
104 static inline void a_dec(volatile int *x)
106 __asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
109 static inline void a_store(volatile int *p, int x)
111 __asm__( "mov %1, %0" : "=m"(*p) : "r"(x) : "memory" );
114 static inline void a_spin()
116 __asm__ __volatile__( "pause" : : : "memory" );
119 static inline void a_crash()
121 __asm__ __volatile__( "hlt" : : : "memory" );