/* Not needed on 64bit architectures */
#if BITS_PER_LONG == 32
-uint32_t __div64_32(uint64_t *n, uint32_t base)
+uint32_t __attribute__((weak)) __div64_32(uint64_t *n, uint32_t base)
{
uint64_t rem = *n;
uint64_t b = base;
/* 64bit divisor, dividend and result. dynamic precision */
uint64_t div64_64(uint64_t dividend, uint64_t divisor)
{
- uint32_t d = divisor;
+ uint32_t high, d;
- if (divisor > 0xffffffffULL) {
- unsigned int shift = fls(divisor >> 32);
+ high = divisor >> 32;
+ if (high) {
+ unsigned int shift = fls(high);
d = divisor >> shift;
dividend >>= shift;
- }
+ } else
+ d = divisor;
- /* avoid 64 bit division if possible */
- if (dividend >> 32)
- do_div(dividend, d);
- else
- dividend = (uint32_t) dividend / d;
+ do_div(dividend, d);
return dividend;
}