27 lines
815 B
ArmAsm
27 lines
815 B
ArmAsm
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# memcpy() Author: Kees J. Bot 2 Jan 1994
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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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.intel_syntax
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.globl _memcpy
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.text
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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, [ebp+8] # String s1
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mov esi, [ebp+12] # String s2
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mov ecx, [ebp+16] # 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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