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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | #define a_cas a_cas static inline int a_cas(volatile int *p, int t, int s) { __asm__ __volatile__ ( "lock ; cmpxchg %3, %1" : "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" ); return t; } #define a_swap a_swap static inline int a_swap(volatile int *p, int v) { __asm__ __volatile__( "xchg %0, %1" : "=r"(v), "=m"(*p) : "0"(v) : "memory" ); return v; } #define a_fetch_add a_fetch_add static inline int a_fetch_add(volatile int *p, int v) { __asm__ __volatile__( "lock ; xadd %0, %1" : "=r"(v), "=m"(*p) : "0"(v) : "memory" ); return v; } #define a_and a_and static inline void a_and(volatile int *p, int v) { __asm__ __volatile__( "lock ; and %1, %0" : "=m"(*p) : "r"(v) : "memory" ); } #define a_or a_or static inline void a_or(volatile int *p, int v) { __asm__ __volatile__( "lock ; or %1, %0" : "=m"(*p) : "r"(v) : "memory" ); } #define a_inc a_inc static inline void a_inc(volatile int *p) { __asm__ __volatile__( "lock ; incl %0" : "=m"(*p) : "m"(*p) : "memory" ); } #define a_dec a_dec static inline void a_dec(volatile int *p) { __asm__ __volatile__( "lock ; decl %0" : "=m"(*p) : "m"(*p) : "memory" ); } #define a_store a_store static inline void a_store(volatile int *p, int x) { __asm__ __volatile__( "mov %1, %0 ; lock ; orl $0,(%%esp)" : "=m"(*p) : "r"(x) : "memory" ); } #define a_barrier a_barrier static inline void a_barrier() { __asm__ __volatile__( "" : : : "memory" ); } #define a_spin a_spin static inline void a_spin() { __asm__ __volatile__( "pause" : : : "memory" ); } #define a_crash a_crash static inline void a_crash() { __asm__ __volatile__( "hlt" : : : "memory" ); } #define a_ctz_64 a_ctz_64 static inline int a_ctz_64(uint64_t x) { int r; __asm__( "bsf %1,%0 ; jnz 1f ; bsf %2,%0 ; add $32,%0\n1:" : "=&r"(r) : "r"((unsigned)x), "r"((unsigned)(x>>32)) ); return r; } #define a_ctz_l a_ctz_l static inline int a_ctz_l(unsigned long x) { long r; __asm__( "bsf %1,%0" : "=r"(r) : "r"(x) ); return r; } #define a_clz_32 a_clz_32 static inline int a_clz_32(uint32_t x) { __asm__( "bsr %1,%0 ; xor $31,%0" : "=r"(x) : "r"(x) ); return x; } |