32 lines
413 B
ArmAsm
32 lines
413 B
ArmAsm
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.define .inn
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! d0 : set size in bytes
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! d1 : bitnumber
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.text
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.inn:
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movem.l d1/d2/a0/a1,.savreg
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move.l (sp)+,.savret
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move.l (sp)+,d1
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move.l sp,a1
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add.l d0,a1
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move.l sp,a0
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move.l d1,d2
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asr.l #4,d2
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!bchg.l #0,d2
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cmp.l d0,d2
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bcc 1f
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add.l d2,a0
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move.l (a0),d2
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btst d1,d2 !eigenlijk .l
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beq 1f
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move.l #1,d0
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bra 2f
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1:
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clr.l d0
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2:
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move.l a1,sp
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movem.l .savreg,d1/d2/a0/a1
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move.l .savret,-(sp)
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rts
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