31 lines
614 B
ArmAsm
31 lines
614 B
ArmAsm
// #LAYOUT# STD * #TAKE
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// #LAYOUT# * BASIC_0 #TAKE
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// #LAYOUT# * * #IGNORE
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#if CONFIG_MEMORY_MODEL_38K
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shift_mem_up:
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// Move __memmove_size bytes from __memmove_src to __memmove_dst,
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// where __memmove_dst > __memmove_src
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// This means we have to copy from the back end down.
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// This routine assumes the pointers are already pointed
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// to the end of the areas, and that Y is correctly initialised
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// to allow the copy to begin.
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php
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!:
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lda (__memmove_src),y
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sta (__memmove_dst),y
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dey
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bne !-
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dec __memmove_src+1
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dec __memmove_dst+1
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dec __memmove_size+1
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bne !-
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plp
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rts
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#endif
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