Subversion Repositories HelenOS

Rev

Rev 4153 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 4153 Rev 4718
Line 50... Line 50...
50 
        "+m" (val->count) : "i" (imm));
 50 
        "+m" (val->count) : "i" (imm));
51 
 
 51 
 
52 
    return v;
 52 
    return v;
53 
}
 53 
}
54 
 
 54 
 
55 
 
 - 
 
56 
static inline uint64_t test_and_set(atomic_t *val) {
 55 
static inline uint64_t test_and_set(atomic_t *val)
- 
 
 56 
{
57 
    uint64_t v;
 57 
    uint64_t v;
58 
       
 58 
       
59 
    asm volatile (
 59 
    asm volatile (
60 
        "movl %0 = 0x01;;\n"
 60 
        "movl %0 = 0x1;;\n"
61 
        "xchg8 %0 = %1, %0;;\n"
 61 
        "xchg8 %0 = %1, %0;;\n"
62 
        : "=r" (v), "+m" (val->count)
 62 
        : "=r" (v), "+m" (val->count)
63 
    );
 63 
    );
64 
   
 64 
   
65 
    return v;
 65 
    return v;
66 
}
 66 
}
67 
 
 67 
 
- 
 
 68 
static inline void atomic_lock_arch(atomic_t *val)
- 
 
 69 
{
- 
 
 70 
    do {
- 
 
 71 
        while (val->count)
- 
 
 72 
            ;
- 
 
 73 
    } while (test_and_set(val));
- 
 
 74 
}
68 
 
 75 
 
69 
static inline void atomic_inc(atomic_t *val)
 76 
static inline void atomic_inc(atomic_t *val)
70 
{
 77 
{
71 
    atomic_add(val, 1);
 78 
    atomic_add(val, 1);
72 
}
 79 
}