ack/mach/m68k2/libem/cmu.s

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1984-12-14 15:41:14 +00:00
.define .cmu
.sect .text
.sect .rom
.sect .data
.sect .bss
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! d0 : # bytes of 1 block
.sect .text
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.cmu:
move.l (sp)+,d2 ! reta
move.l sp,a0 ! top block
move.l sp,a1
move.l d2,-(sp)
add d0,a1 ! lower block
move d0,d2
asr #1,d0
move.l #1,d1 ! greater
1:
cmp (a0)+,(a1)+
bne 2f
sub #1,d0
bgt 1b
clr d1 ! equal
2:
bcc 3f
neg d1 ! less
3:
move.l (sp)+,a0
asl #1,d2
add d2,sp ! new sp
jmp (a0)