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#ifndef __ARCH_M68K_ATOMIC__
#define __ARCH_M68K_ATOMIC__
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc..
*/
/*
* We do not have SMP m68k systems, so we don't have to deal with that.
*/
typedef int atomic_t;
static __inline__ void atomic_add(atomic_t i, atomic_t *v)
{
__asm__ __volatile__("addl %1,%0" : : "m" (*v), "id" (i));
}
static __inline__ void atomic_sub(atomic_t i, atomic_t *v)
{
__asm__ __volatile__("subl %1,%0" : : "m" (*v), "id" (i));
}
static __inline__ void atomic_inc(atomic_t *v)
{
__asm__ __volatile__("addql #1,%0" : : "m" (*v));
}
static __inline__ void atomic_dec(atomic_t *v)
{
__asm__ __volatile__("subql #1,%0" : : "m" (*v));
}
static __inline__ int atomic_dec_and_test(atomic_t *v)
{
char c;
__asm__ __volatile__("subql #1,%1; seq %0" : "=d" (c) : "m" (*v));
return c != 0;
}
#endif /* __ARCH_M68K_ATOMIC __ */
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