24 lines
702 B
ArmAsm
24 lines
702 B
ArmAsm
! memcpy() Author: Kees J. Bot
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! 2 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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.align 16
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_memcpy:
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push ebp
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mov ebp, esp
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push esi
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push edi
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mov edi, 8(ebp) ! String s1
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mov esi, 12(ebp) ! String s2
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mov ecx, 16(ebp) ! 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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