43 lines
482 B
ArmAsm
43 lines
482 B
ArmAsm
.define .cii
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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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.sect .text
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.cii:
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move.l (sp)+,a0 ! return address
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move.l (sp)+,d0 ! destination size
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move.l (sp)+,d1
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move.l (sp),d2
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cmp.l #1,d1
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bne 1f
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move.l #2,d1
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ext.w d2
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1:
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cmp.l #2,d1
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bne 1f
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move.l #4,d1
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ext.l d2
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1:
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move.l d2,(sp)
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sub.l d1,d0
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bgt 1f
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sub.l d0,sp ! pop extra bytes
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bra 3f
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1:
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clr.l d1
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tst.l d2
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bge 1f
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move.l #-1,d1
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1:
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asr #2,d0
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2:
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move.l d1,-(sp)
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dbf d0,2b
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3:
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move.l a0,-(sp)
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rts
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.align 2
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