Subversion Repositories or1k

#ifndef _M68K_DIV64_H

#define _M68K_DIV64_H

/* n = n / base; return rem; */

#if 1

#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;                                                  \

})

#else

#define do_div(n,base) ({                                       \

        int __res;                                              \

        __res = ((unsigned long) n) % (unsigned) base;          \

        n = ((unsigned long) n) / (unsigned) base;              \

        __res;                                                  \

})

#endif

#endif /* _M68K_DIV64_H */