40 lines
754 B
ArmAsm
40 lines
754 B
ArmAsm
.define .aar
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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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! use .mli2
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! 2-byte descriptor elements
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! any size array elements
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! no range checking
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! parameters:
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! stack: pointer to descriptor
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! index
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! base address of array
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! stack: result (out)
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! uses .mli2 routine
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! side-effect: size of array elements in bc
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.aar:
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pop hl ! return address
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pop ix ! pointer to descr.
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ex (sp),hl ! save ret. addr.
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! hl := index
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ld c,(ix+0) ! bc := lower bound
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ld b,(ix+1)
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xor a
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sbc hl,bc ! hl := index-lwb
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ld c,(ix+4) ! bc := size
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ld b,(ix+5)
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ex de,hl ! de := index-lwb
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call .mli2 ! hl := bc*de =
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! size*(index-lwb)
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pop ix ! return address
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pop de ! base
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add hl,de ! addr. of element
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push hl
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jp (ix) ! return
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