31 lines
491 B
ArmAsm
31 lines
491 B
ArmAsm
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.define .csa4
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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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.csa4:
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move.l (sp)+,a0 ! case descriptor
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move.l (sp)+,d0 ! index
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move.l (a0)+,a1 ! default address
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sub.l (a0)+,d0 ! index - lower bound
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blt 1f
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cmp.l (a0)+,d0 ! rel. index <-> upper - lower bound
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bgt 1f
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asl.l #2,d0
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add.l d0,a0
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move.l (a0),d1 ! test jump address
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move.l d1,d0
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beq 1f
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move.l d1,a1
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bra 3f
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1:
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move.l a1,d0 ! test default jump address
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beq 2f
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3:
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jmp (a1)
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2:
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move.w #ECASE,-(sp)
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jmp .fat
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