udiv10.s

来自「arm ads1.2 with crack.rar」· S 代码 · 共 27 行

; generated by ARM divc

        CODE32

        AREA |div10$code|, CODE, READONLY

        EXPORT udiv10

udiv10
; takes argument in a1
; returns quotient in a1, remainder in a2
; cycles could be saved if only divide or remainder is required
        SUB     a2, a1, #10
        SUB     a1, a1, a1, lsr #2
        ADD     a1, a1, a1, lsr #4
        ADD     a1, a1, a1, lsr #8
        ADD     a1, a1, a1, lsr #16
        MOV     a1, a1, lsr #3
        ADD     a3, a1, a1, lsl #2
        SUBS    a2, a2, a3, lsl #1
        ADDPL   a1, a1, #1
        ADDMI   a2, a2, #10
        MOV     pc, lr

        END