30 lines
460 B
ArmAsm
30 lines
460 B
ArmAsm
.define .csa
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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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ECASE=20
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.sect .text
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.csa:
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! jump table address in a0
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! index in d0
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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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move.l (a0,d0.l*4), d1 ! jump address
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beq 1f
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move.l d1,a1
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jmp (a1)
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1:
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move.l a1, d0
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beq 2f
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jmp (a1) ! jump to specified address
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2:
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move.l #ECASE, -(sp)
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jmp (.fatal)
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.align 2
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