54 lines
591 B
ArmAsm
54 lines
591 B
ArmAsm
.define .sar
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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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! use .trp.z
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! 2-byte descriptors
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! any size array elements
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! parameters:
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! on stack
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! uses .mli2
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! adapted from .aar and .sts
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.sar:
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pop hl
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pop ix
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ex (sp),hl
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ld c,(ix+0)
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ld b,(ix+1)
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xor a
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sbc hl,bc
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ld c,(ix+4)
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ld b,(ix+5)
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ex de,hl
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call .mli2
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pop ix
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pop de
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add hl,de
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srl b ! bc contains #bytes to transfer
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rr c ! divide bc by 2
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jr nc,1f
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ld a,c
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or b
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jr nz,.trp.z
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pop bc
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ld (hl),c
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jp (ix)
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1:
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pop de
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ld (hl),e
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inc hl
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ld (hl),d
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inc hl
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dec bc
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ld a,b
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or c
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jr nz,1b
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jp (ix)
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