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#ifndef _ARCH_I386_LOCAL_H
#define _ARCH_I386_LOCAL_H

#include <linux/percpu.h>

typedef struct
{
        volatile unsigned long counter;
} local_t;

#define LOCAL_INIT(i)   { (i) }

#define local_read(v)   ((v)->counter)
#define local_set(v,i)  (((v)->counter) = (i))

static __inline__ void local_inc(local_t *v)
{
        __asm__ __volatile__(
                "incl %0"
                :"=m" (v->counter)
                :"m" (v->counter));
}

static __inline__ void local_dec(local_t *v)
{
        __asm__ __volatile__(
                "decl %0"
                :"=m" (v->counter)
                :"m" (v->counter));
}

static __inline__ void local_add(unsigned long i, local_t *v)
{
        __asm__ __volatile__(
                "addl %1,%0"
                :"=m" (v->counter)
                :"ir" (i), "m" (v->counter));
}

static __inline__ void local_sub(unsigned long i, local_t *v)
{
        __asm__ __volatile__(
                "subl %1,%0"
                :"=m" (v->counter)
                :"ir" (i), "m" (v->counter));
}

/* On x86, these are no better than the atomic variants. */
#define __local_inc(l)          local_inc(l)
#define __local_dec(l)          local_dec(l)
#define __local_add(i,l)        local_add((i),(l))
#define __local_sub(i,l)        local_sub((i),(l))

/* Use these for per-cpu local_t variables: on some archs they are
 * much more efficient than these naive implementations.  Note they take
 * a variable, not an address.
 */
#define cpu_local_read(v)       local_read(&__get_cpu_var(v))
#define cpu_local_set(v, i)     local_set(&__get_cpu_var(v), (i))
#define cpu_local_inc(v)        local_inc(&__get_cpu_var(v))
#define cpu_local_dec(v)        local_dec(&__get_cpu_var(v))
#define cpu_local_add(i, v)     local_add((i), &__get_cpu_var(v))
#define cpu_local_sub(i, v)     local_sub((i), &__get_cpu_var(v))

#define __cpu_local_inc(v)      cpu_local_inc(v)
#define __cpu_local_dec(v)      cpu_local_dec(v)
#define __cpu_local_add(i, v)   cpu_local_add((i), (v))
#define __cpu_local_sub(i, v)   cpu_local_sub((i), (v))

#endif /* _ARCH_I386_LOCAL_H */