1 #ifndef _M68K_DIV64_H
2 #define _M68K_DIV64_H
3 
4 #ifdef CONFIG_MMU
5 
6 #include <linux/types.h>
7 
8 /* n = n / base; return rem; */
9 
10 #define do_div(n, base) ({					\
11 	union {							\
12 		unsigned long n32[2];				\
13 		unsigned long long n64;				\
14 	} __n;							\
15 	unsigned long __rem, __upper;				\
16 								\
17 	__n.n64 = (n);						\
18 	if ((__upper = __n.n32[0])) {				\
19 		asm ("divul.l %2,%1:%0"				\
20 			: "=d" (__n.n32[0]), "=d" (__upper)	\
21 			: "d" (base), "0" (__n.n32[0]));	\
22 	}							\
23 	asm ("divu.l %2,%1:%0"					\
24 		: "=d" (__n.n32[1]), "=d" (__rem)		\
25 		: "d" (base), "1" (__upper), "0" (__n.n32[1]));	\
26 	(n) = __n.n64;						\
27 	__rem;							\
28 })
29 
30 #else
31 #include <asm-generic/div64.h>
32 #endif /* CONFIG_MMU */
33 
34 #endif /* _M68K_DIV64_H */
35