source: trunk/libs/newlib/src/newlib/libc/machine/w65/smulhi3.S @ 444

Last change on this file since 444 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 153 bytes
Line 
1        .global ___smulhi3
2___smulhi3:     
3
4
5       
6        lda     #0
7mult1:  ldx     <r4
8        beq     done
9        lsr     <r4
10        bcc     mult2
11        clc
12        adc     <r5
13
14mult2:  asl     <r5
15        bra     mult1
16
17done:   sta     <r0
18        rtl
19
20
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