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 *
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 *
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 * @param MEMCPY_DST(%esp)	Destination address.
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 * @param MEMCPY_DST(%esp)	Destination address.
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 * @param MEMCPY_SRC(%esp)	Source address.
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 * @param MEMCPY_SRC(%esp)	Source address.
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 * @param MEMCPY_SIZE(%esp)	Size.
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 * @param MEMCPY_SIZE(%esp)	Size.
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 *
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 *
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 * @return MEMCPY_SRC(%esp) on success and 0 on failure.
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 * @return MEMCPY_DST(%esp) on success and 0 on failure.
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 */
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 */
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memcpy:
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memcpy:
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memcpy_from_uspace:
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memcpy_from_uspace:
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memcpy_to_uspace:
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memcpy_to_uspace:
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	movl %edi, %edx			/* save %edi */
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	movl %edi, %edx			/* save %edi */
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	rep movsb			/* copy the rest byte by byte */
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	rep movsb			/* copy the rest byte by byte */
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0:
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0:
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	movl %edx, %edi
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	movl %edx, %edi
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	movl %eax, %esi
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	movl %eax, %esi
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	movl MEMCPY_SRC(%esp), %eax	/* MEMCPY_SRC(%esp), success */
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	movl MEMCPY_DST(%esp), %eax	/* MEMCPY_DST(%esp), success */
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	ret
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	ret
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/*
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/*
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 * We got here from as_page_fault() after the memory operations
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 * We got here from as_page_fault() after the memory operations
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 * above had caused a page fault.
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 * above had caused a page fault.