Subversion Repositories HelenOS-historic

Rev

Rev 534 | Rev 627 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 534 Rev 557
Line 51... Line 51...
51
 
51
 
52
static inline atomic_t atomic_inc_pre(atomic_t *val)
52
static inline atomic_t atomic_inc_pre(atomic_t *val)
53
{
53
{
54
    atomic_t r;
54
    atomic_t r;
55
    __asm__ volatile (
55
    __asm__ volatile (
56
        "movl $1,%0;"
56
        "movl $1, %0\n"
57
        "lock xaddl %0,%1;"
57
        "lock xaddl %0, %1\n"
58
        : "=r"(r), "=m" (*val)
58
        : "=r"(r), "=m" (*val)
59
    );
59
    );
60
    return r;
60
    return r;
61
}
61
}
62
 
62
 
Line 64... Line 64...
64
 
64
 
65
static inline atomic_t atomic_dec_pre(atomic_t *val)
65
static inline atomic_t atomic_dec_pre(atomic_t *val)
66
{
66
{
67
    atomic_t r;
67
    atomic_t r;
68
    __asm__ volatile (
68
    __asm__ volatile (
69
        "movl $-1,%0;"
69
        "movl $-1, %0\n"
70
        "lock xaddl %0,%1;"
70
        "lock xaddl %0, %1\n"
71
        : "=r"(r), "=m" (*val)
71
        : "=r"(r), "=m" (*val)
72
    );
72
    );
73
    return r;
73
    return r;
74
}
74
}
75
 
75
 
76
#define atomic_inc_post(val) (atomic_inc_pre(val)+1)
76
#define atomic_inc_post(val) (atomic_inc_pre(val)+1)
77
#define atomic_dec_post(val) (atomic_dec_pre(val)-1)
77
#define atomic_dec_post(val) (atomic_dec_pre(val)-1)
78
 
78
 
79
 
-
 
80
 
-
 
81
static inline int test_and_set(volatile int *val) {
79
static inline int test_and_set(volatile int *val) {
82
    int v;
80
    int v;
83
   
81
   
84
    __asm__ volatile (
82
    __asm__ volatile (
85
        "movl $1, %0\n"
83
        "movl $1, %0\n"