1 #define a_ctz_64 a_ctz_64
2 static inline int a_ctz_64(uint64_t x)
5 __asm__( "bsf %1,%0 ; jnz 1f ; bsf %2,%0 ; addl $32,%0\n1:"
6 : "=&r"(r) : "r"((unsigned)x), "r"((unsigned)(x>>32)) );
10 #define a_ctz_l a_ctz_l
11 static inline int a_ctz_l(unsigned long x)
14 __asm__( "bsf %1,%0" : "=r"(r) : "r"(x) );
18 #define a_and_64 a_and_64
19 static inline void a_and_64(volatile uint64_t *p, uint64_t v)
21 __asm__( "lock ; andl %1, (%0) ; lock ; andl %2, 4(%0)"
22 : : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" );
25 #define a_or_64 a_or_64
26 static inline void a_or_64(volatile uint64_t *p, uint64_t v)
28 __asm__( "lock ; orl %1, (%0) ; lock ; orl %2, 4(%0)"
29 : : "r"((long *)p), "r"((unsigned)v), "r"((unsigned)(v>>32)) : "memory" );
33 static inline void a_or_l(volatile void *p, long v)
35 __asm__( "lock ; orl %1, %0"
36 : "=m"(*(long *)p) : "r"(v) : "memory" );
40 static inline int a_cas(volatile int *p, int t, int s)
42 __asm__( "lock ; cmpxchg %3, %1"
43 : "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
48 static inline void a_or(volatile int *p, int v)
50 __asm__( "lock ; orl %1, %0"
51 : "=m"(*p) : "r"(v) : "memory" );
55 static inline void a_and(volatile int *p, int v)
57 __asm__( "lock ; andl %1, %0"
58 : "=m"(*p) : "r"(v) : "memory" );
62 static inline int a_swap(volatile int *x, int v)
64 __asm__( "xchg %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
68 #define a_fetch_add a_fetch_add
69 static inline int a_fetch_add(volatile int *x, int v)
71 __asm__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*x) : "0"(v) : "memory" );
76 static inline void a_inc(volatile int *x)
78 __asm__( "lock ; incl %0" : "=m"(*x) : "m"(*x) : "memory" );
82 static inline void a_dec(volatile int *x)
84 __asm__( "lock ; decl %0" : "=m"(*x) : "m"(*x) : "memory" );
87 #define a_store a_store
88 static inline void a_store(volatile int *p, int x)
90 __asm__( "movl %1, %0 ; lock ; orl $0,(%%esp)" : "=m"(*p) : "r"(x) : "memory" );
94 static inline void a_spin()
96 __asm__ __volatile__( "pause" : : : "memory" );
99 #define a_barrier a_barrier
100 static inline void a_barrier()
102 __asm__ __volatile__( "" : : : "memory" );
105 #define a_crash a_crash
106 static inline void a_crash()
108 __asm__ __volatile__( "hlt" : : : "memory" );