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