25 lines
420 B
NASM
25 lines
420 B
NASM
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; copy string from source pointer to destination pointer
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; if the source and destination overlap, the behavior is undefined
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; inputs:
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; r0: pointer to source
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; r1: pointer to destinaton
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; outputs:
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; none
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copy_string:
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push r0
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push r1
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push r2
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copy_string_loop:
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mov.8 r2, [r0]
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mov.8 [r1], r2
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inc r0
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inc r1
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cmp.8 r2, 0
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ifnz jmp copy_string_loop
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pop r2
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pop r1
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pop r0
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ret
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