24 lines
679 B
ArmAsm
Executable File
24 lines
679 B
ArmAsm
Executable File
! memcpy() Author: Kees J. Bot
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! 27 Jan 1994
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.sect .text; .sect .rom; .sect .data; .sect .bss
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! void *memcpy(void *s1, const void *s2, size_t n)
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! Copy a chunk of memory.
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! This routine need not handle overlap, so it does not handle overlap.
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! One could simply call __memmove, the cost of the overlap check is
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! negligible, but you are dealing with a programmer who believes that
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! if anything can go wrong, it should go wrong.
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!
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.sect .text
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.define _memcpy
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_memcpy:
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push bp
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mov bp, sp
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push si
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push di
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mov di, 4(bp) ! String s1
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mov si, 6(bp) ! String s2
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mov cx, 8(bp) ! Length
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! No overlap check here
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jmp __memcpy ! Call the part of __memmove that copies up
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