1#ifndef _M68K_DIV64_H
2#define _M68K_DIV64_H
3
4#include <linux/types.h>
5
6/* n = n / base; return rem; */
7
8#define do_div(n, base) ({					\
9	union {							\
10		unsigned long n32[2];				\
11		unsigned long long n64;				\
12	} __n;							\
13	unsigned long __rem, __upper;				\
14								\
15	__n.n64 = (n);						\
16	if ((__upper = __n.n32[0])) {				\
17		asm ("divul.l %2,%1:%0"				\
18			: "=d" (__n.n32[0]), "=d" (__upper)	\
19			: "d" (base), "0" (__n.n32[0]));	\
20	}							\
21	asm ("divu.l %2,%1:%0"					\
22		: "=d" (__n.n32[1]), "=d" (__rem)		\
23		: "d" (base), "1" (__upper), "0" (__n.n32[1]));	\
24	(n) = __n.n64;						\
25	__rem;							\
26})
27
28extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
29#endif /* _M68K_DIV64_H */
30