Blame src/string/ntapi_tt_aligned_memcpy_utf16.c

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/********************************************************/
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/*  ntapi: Native API core library                      */
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/*  Copyright (C) 2013--2017  Z. Gilboa                 */
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/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
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/********************************************************/
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#include <psxtypes/psxtypes.h>
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__attr_protected__
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wchar16_t * __cdecl __ntapi_tt_aligned_memcpy_utf16(
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	__in	uintptr_t *	dst,
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	__in	uintptr_t *	src,
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	__in	size_t		bytes)
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{
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	size_t 		aligned_block;
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	size_t		copied;
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	wchar16_t *	wch_src;
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	wchar16_t *	wch_dst;
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	#if defined (__X86_64_MODEL)
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	uint32_t *	uint32_src;
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	uint32_t *	uint32_dst;
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	#endif
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	aligned_block = bytes;
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	aligned_block /= sizeof(uintptr_t);
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	aligned_block *= sizeof(uintptr_t);
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	copied = 0;
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	while (copied < aligned_block) {
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		*dst = *src;
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		src++;
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		dst++;
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		copied += sizeof(uintptr_t);
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	}
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	#if defined (__X86_64_MODEL)
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		switch (bytes % sizeof(uintptr_t)) {
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			case 6:
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				uint32_src = (uint32_t *)src;
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				uint32_dst = (uint32_t *)dst;
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				*uint32_dst = *uint32_src;
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				uint32_src++;
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				uint32_dst++;
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				/* make the compiler happy */
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				wch_src = (wchar16_t *)uint32_src;
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				wch_dst = (wchar16_t *)uint32_dst;
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				*wch_dst = *wch_src;
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				break;
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			case 4:
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				uint32_src = (uint32_t *)src;
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				uint32_dst = (uint32_t *)dst;
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				*uint32_dst = *uint32_src;
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				break;
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		}
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	#endif
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	if (bytes % sizeof(uintptr_t)) {
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		/* the remainder must be 2 */
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		wch_src = (wchar16_t *)src;
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		wch_dst = (wchar16_t *)dst;
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		*wch_dst = *wch_src;
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	}
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	return (wchar16_t *)dst;
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}