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#ifndef _HACK_ASM_SYSTEM_H
#define _HACK_ASM_SYSTEM_H
/* We don't need atomicity in the Linux code because we serialize all
entries to it. */
#include <stdint.h>
#define xchg(ptr, x) \
({ \
__typeof__ (*(ptr)) *_ptr = (ptr), _x = *_ptr; \
(uintptr_t) *_ptr = (x); _x; \
})
#define mb() ((void) 0) /* memory barrier */
#define rmb() mb()
#define wmb() mb()
#endif
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