Subversion Repositories HelenOS

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Regard whitespace Rev 4344 → Rev 4345

/branches/dynload/kernel/arch/ia32/include/atomic.h
41,17 → 41,29
 
static inline void atomic_inc(atomic_t *val) {
#ifdef CONFIG_SMP
asm volatile ("lock incl %0\n" : "+m" (val->count));
asm volatile (
"lock incl %[count]\n"
: [count] "+m" (val->count)
);
#else
asm volatile ("incl %0\n" : "+m" (val->count));
asm volatile (
"incl %[count]\n"
: [count] "+m" (val->count)
);
#endif /* CONFIG_SMP */
}
 
static inline void atomic_dec(atomic_t *val) {
#ifdef CONFIG_SMP
asm volatile ("lock decl %0\n" : "+m" (val->count));
asm volatile (
"lock decl %[count]\n"
: [count] "+m" (val->count)
);
#else
asm volatile ("decl %0\n" : "+m" (val->count));
asm volatile (
"decl %[count]\n"
: "+m" (val->count)
);
#endif /* CONFIG_SMP */
}
 
60,8 → 72,8
long r = 1;
 
asm volatile (
"lock xaddl %1, %0\n"
: "+m" (val->count), "+r" (r)
"lock xaddl %[r], %[count]\n"
: [count] "+m" (val->count), [r] "+r" (r)
);
 
return r;
72,8 → 84,8
long r = -1;
asm volatile (
"lock xaddl %1, %0\n"
: "+m" (val->count), "+r"(r)
"lock xaddl %[r], %[count]\n"
: [count] "+m" (val->count), [r] "+r"(r)
);
return r;
86,9 → 98,9
uint32_t v;
asm volatile (
"movl $1, %0\n"
"xchgl %0, %1\n"
: "=r" (v),"+m" (val->count)
"movl $1, %[v]\n"
"xchgl %[v], %[count]\n"
: [v] "=r" (v), [count] "+m" (val->count)
);
return v;
105,15 → 117,15
#ifdef CONFIG_HT
"pause\n" /* Pentium 4's HT love this instruction */
#endif
"mov %0, %1\n"
"testl %1, %1\n"
"mov %[count], %[tmp]\n"
"testl %[tmp], %[tmp]\n"
"jnz 0b\n" /* lightweight looping on locked spinlock */
"incl %1\n" /* now use the atomic operation */
"xchgl %0, %1\n"
"testl %1, %1\n"
"incl %[tmp]\n" /* now use the atomic operation */
"xchgl %[count], %[tmp]\n"
"testl %[tmp], %[tmp]\n"
"jnz 0b\n"
: "+m" (val->count), "=&r"(tmp)
: [count] "+m" (val->count), [tmp] "=&r" (tmp)
);
/*
* Prevent critical section code from bleeding out this way up.