source: trunk/minix/lib/i86/int64/mul64u.s@ 16

!       mul64u() - unsigned long by unsigned multiply giving 64 bit result
!                                                       Author: Kees J. Bot
!                                                               24 Dec 1995
.sect .text
.define _mul64u

_mul64u:                        ! u64_t mul64u(unsigned long i, unsigned j);
        push    bp
        mov     bp, sp
        mov     bx, 4(bp)
        mov     ax, 6(bp)
        mul     10(bp)
        mov     (bx), ax
        mov     2(bx), dx
        mov     ax, 8(bp)
        mul     10(bp)
        add     2(bx), ax
        adc     dx, #0
        mov     4(bx), dx
        mov     6(bx), #0
        mov     ax, bx
        pop     bp
        ret