#ifndef _M68K_DIV64_H | |
#define _M68K_DIV64_H | |
#include <linux/types.h> | |
/* n = n / base; return rem; */ | |
#define do_div(n, base) ({ \ | |
union { \ | |
unsigned long n32[2]; \ | |
unsigned long long n64; \ | |
} __n; \ | |
unsigned long __rem, __upper; \ | |
\ | |
__n.n64 = (n); \ | |
if ((__upper = __n.n32[0])) { \ | |
asm ("divul.l %2,%1:%0" \ | |
: "=d" (__n.n32[0]), "=d" (__upper) \ | |
: "d" (base), "0" (__n.n32[0])); \ | |
} \ | |
asm ("divu.l %2,%1:%0" \ | |
: "=d" (__n.n32[1]), "=d" (__rem) \ | |
: "d" (base), "1" (__upper), "0" (__n.n32[1])); \ | |
(n) = __n.n64; \ | |
__rem; \ | |
}) | |
extern uint64_t div64_64(uint64_t dividend, uint64_t divisor); | |
#endif /* _M68K_DIV64_H */ |