1290001Sglebius#define a_cas a_cas
2290001Sglebiusstatic inline int a_cas(volatile int *p, int t, int s)
3290001Sglebius{
4290001Sglebius	__asm__ __volatile__ (
5290001Sglebius		"lock ; cmpxchg %3, %1"
6290001Sglebius		: "=a"(t), "=m"(*p) : "a"(t), "r"(s) : "memory" );
7290001Sglebius	return t;
8290001Sglebius}
9290001Sglebius
10290001Sglebius#define a_swap a_swap
11290001Sglebiusstatic inline int a_swap(volatile int *p, int v)
12290001Sglebius{
13290001Sglebius	__asm__ __volatile__(
14290001Sglebius		"xchg %0, %1"
15290001Sglebius		: "=r"(v), "=m"(*p) : "0"(v) : "memory" );
16290001Sglebius	return v;
17290001Sglebius}
18290001Sglebius
19290001Sglebius#define a_fetch_add a_fetch_add
20290001Sglebiusstatic inline int a_fetch_add(volatile int *p, int v)
21290001Sglebius{
22290001Sglebius	__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_inc a_inc
45static inline void a_inc(volatile int *p)
46{
47	__asm__ __volatile__(
48		"lock ; incl %0"
49		: "=m"(*p) : "m"(*p) : "memory" );
50}
51
52#define a_dec a_dec
53static inline void a_dec(volatile int *p)
54{
55	__asm__ __volatile__(
56		"lock ; decl %0"
57		: "=m"(*p) : "m"(*p) : "memory" );
58}
59
60#define a_store a_store
61static inline void a_store(volatile int *p, int x)
62{
63	__asm__ __volatile__(
64		"mov %1, %0 ; lock ; orl $0,(%%esp)"
65		: "=m"(*p) : "r"(x) : "memory" );
66}
67
68#define a_barrier a_barrier
69static inline void a_barrier()
70{
71	__asm__ __volatile__( "" : : : "memory" );
72}
73
74#define a_spin a_spin
75static inline void a_spin()
76{
77	__asm__ __volatile__( "pause" : : : "memory" );
78}
79
80#define a_crash a_crash
81static inline void a_crash()
82{
83	__asm__ __volatile__( "hlt" : : : "memory" );
84}
85
86#define a_ctz_64 a_ctz_64
87static inline int a_ctz_64(uint64_t x)
88{
89	int r;
90	__asm__( "bsf %1,%0 ; jnz 1f ; bsf %2,%0 ; add $32,%0\n1:"
91		: "=&r"(r) : "r"((unsigned)x), "r"((unsigned)(x>>32)) );
92	return r;
93}
94
95#define a_ctz_32 a_ctz_32
96static inline int a_ctz_32(uint32_t x)
97{
98	int r;
99	__asm__( "bsf %1,%0" : "=r"(r) : "r"(x) );
100	return r;
101}
102
103#define a_clz_32 a_clz_32
104static inline int a_clz_32(uint32_t x)
105{
106	__asm__( "bsr %1,%0 ; xor $31,%0" : "=r"(x) : "r"(x) );
107	return x;
108}
109