1#define a_cas a_cas 2static inline int a_cas(volatile int *p, int t, int s) 3{ 4 __asm__ __volatile__ ( 5 "lock ; cmpxchg %3, %1" 6 : "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" ); 7 return t; 8} 9 10#define a_swap a_swap 11static inline int a_swap(volatile int *p, int v) 12{ 13 __asm__ __volatile__( 14 "xchg %0, %1" 15 : "=r"(v), "=m"(*p) : "0"(v) : "memory" ); 16 return v; 17} 18 19#define a_fetch_add a_fetch_add 20static inline int a_fetch_add(volatile int *p, int v) 21{ 22 __asm__ __volatile__( 23 "lock ; xadd %0, %1" 24 : "=r"(v), "=m"(*p) : "0"(v) : "memory" ); 25 return v; 26} 27 28#define a_and a_and 29static inline void a_and(volatile int *p, int v) 30{ 31 __asm__ __volatile__( 32 "lock ; and %1, %0" 33 : "=m"(*p) : "r"(v) : "memory" ); 34} 35 36#define a_or a_or 37static inline void a_or(volatile int *p, int v) 38{ 39 __asm__ __volatile__( 40 "lock ; or %1, %0" 41 : "=m"(*p) : "r"(v) : "memory" ); 42} 43 44#define a_and_64 a_and_64 45static inline void a_and_64(volatile uint64_t *p, uint64_t v) 46{ 47 __asm__ __volatile( 48 "lock ; and %1, %0" 49 : "=m"(*p) : "r"(v) : "memory" ); 50} 51 52#define a_or_64 a_or_64 53static inline void a_or_64(volatile uint64_t *p, uint64_t v) 54{ 55 __asm__ __volatile__( 56 "lock ; or %1, %0" 57 : "=m"(*p) : "r"(v) : "memory" ); 58} 59 60#define a_inc a_inc 61static inline void a_inc(volatile int *p) 62{ 63 __asm__ __volatile__( 64 "lock ; incl %0" 65 : "=m"(*p) : "m"(*p) : "memory" ); 66} 67 68#define a_dec a_dec 69static inline void a_dec(volatile int *p) 70{ 71 __asm__ __volatile__( 72 "lock ; decl %0" 73 : "=m"(*p) : "m"(*p) : "memory" ); 74} 75 76#define a_store a_store 77static inline void a_store(volatile int *p, int x) 78{ 79 __asm__ __volatile__( 80 "mov %1, %0 ; lock ; orl $0,(%%rsp)" 81 : "=m"(*p) : "r"(x) : "memory" ); 82} 83 84#define a_barrier a_barrier 85static inline void a_barrier() 86{ 87 __asm__ __volatile__( "" : : : "memory" ); 88} 89 90#define a_spin a_spin 91static inline void a_spin() 92{ 93 __asm__ __volatile__( "pause" : : : "memory" ); 94} 95 96#define a_crash a_crash 97static inline void a_crash() 98{ 99 __asm__ __volatile__( "hlt" : : : "memory" ); 100} 101 102#define a_ctz_64 a_ctz_64 103static inline int a_ctz_64(uint64_t x) 104{ 105 __asm__( "bsf %1,%0" : "=r"(x) : "r"(x) ); 106 return x; 107} 108 109#define a_ctz_l a_ctz_l 110static inline int a_ctz_l(unsigned long x) 111{ 112 __asm__( "bsf %1,%0" : "=r"(x) : "r"(x) ); 113 return x; 114} 115