Subversion Repositories HelenOS

Rev

Rev 2071 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2071 Rev 2082
Line 36... Line 36...
36 
 
 36 
 
37 
#ifndef LIBC_amd64_ATOMIC_H_
 37 
#ifndef LIBC_amd64_ATOMIC_H_
38 
#define LIBC_amd64_ATOMIC_H_
 38 
#define LIBC_amd64_ATOMIC_H_
39 
 
 39 
 
40 
static inline void atomic_inc(atomic_t *val) {
 40 
static inline void atomic_inc(atomic_t *val) {
41 
    __asm__ volatile ("lock incq %0\n" : "=m" (val->count));
 41 
    asm volatile ("lock incq %0\n" : "=m" (val->count));
42 
}
 42 
}
43 
 
 43 
 
44 
static inline void atomic_dec(atomic_t *val) {
 44 
static inline void atomic_dec(atomic_t *val) {
45 
    __asm__ volatile ("lock decq %0\n" : "=m" (val->count));
 45 
    asm volatile ("lock decq %0\n" : "=m" (val->count));
46 
}
 46 
}
47 
 
 47 
 
48 
static inline long atomic_postinc(atomic_t *val)
 48 
static inline long atomic_postinc(atomic_t *val)
49 
{
 49 
{
50 
    long r;
 50 
    long r;
51 
 
 51 
 
52 
    __asm__ volatile (
 52 
    asm volatile (
53 
        "movq $1, %0\n"
 53 
        "movq $1, %0\n"
54 
        "lock xaddq %0, %1\n"
 54 
        "lock xaddq %0, %1\n"
55 
        : "=r" (r), "=m" (val->count)
 55 
        : "=r" (r), "=m" (val->count)
56 
    );
 56 
    );
57 
 
 57 
 
Line 60... Line 60...
60 
 
 60 
 
61 
static inline long atomic_postdec(atomic_t *val)
 61 
static inline long atomic_postdec(atomic_t *val)
62 
{
 62 
{
63 
    long r;
 63 
    long r;
64 
   
 64 
   
65 
    __asm__ volatile (
 65 
    asm volatile (
66 
        "movq $-1, %0\n"
 66 
        "movq $-1, %0\n"
67 
        "lock xaddq %0, %1\n"
 67 
        "lock xaddq %0, %1\n"
68 
        : "=r" (r), "=m" (val->count)
 68 
        : "=r" (r), "=m" (val->count)
69 
    );
 69 
    );
70 
   
 70