#ifndef _KVI_MEMMOVE_H_
#define _KVI_MEMMOVE_H_

//=============================================================================
//
//   File : kvi_memmove.h
//   Creation date : Fri Mar 19 1999 03:15:21 CEST by Szymon Stefanek
//
//   This file is part of the KVirc irc client distribution
//   Copyright (C) 1999-2001 Szymon Stefanek (pragma at kvirc dot net)
//
//   This program is FREE software. You can redistribute it and/or
//   modify it under the terms of the GNU General Public License
//   as published by the Free Software Foundation; either version 2
//   of the License, or (at your opinion) any later version.
//
//   This program is distributed in the HOPE that it will be USEFUL,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//   See the GNU General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program. If not, write to the Free Software Foundation,
//   Inc. ,59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
//=============================================================================

#include "kvi_settings.h"

//#undef COMPILE_WITH_SYSTEM_MEMMOVE
//#define COMPILE_MMX_ASM

#ifndef _KVI_MEMMOVE_CPP_

	#ifdef COMPILE_WITH_SYSTEM_MEMMOVE

		#include <string.h>

		#define kvi_memmove memmove
		#define kvi_memmoveodd memmove
		#define kvi_memset memset
		#define kvi_fastmove memcpy
		#define kvi_fastmoveodd memcpy

	#else

		#ifdef COMPILE_ON_WINDOWS
			#error "This stuff should be never compiled on Windows"
		#endif

		extern void *kvi_memmove(void *dst_ptr,const void *src_ptr,int len);
		extern void *kvi_memmoveodd(void *dst_ptr,const void *src_ptr,int len);
		extern void *kvi_memset(void *dst_ptr,char c,int len);
		// In fastmove the src and dst may not overlap
	
		#ifdef COMPILE_ix86_ASM

			// WE WANT repnz; movsq\n"!!!

			inline void kvi_fastmove(void * dst_ptr,const void *src_ptr,int len)
			{
				__asm__ __volatile__(
					"	cld\n"
					"	shr $1,%0\n"
					"	jnc 1f\n"
					"	movsb\n"
					"1:\n"
					"	shr $1,%0\n"
					"	jnc 2f\n"
					"	movsw\n"
					"2:\n"
					"	repnz; movsl\n"
					: "=c" (len), "=&S" (src_ptr), "=&D" (dst_ptr)
					: "0"  (len), "1"   (src_ptr), "2"   (dst_ptr)
				);
			}

			inline void kvi_fastmoveodd(void * dst_ptr,const void *src_ptr,int len)
			{
				__asm__ __volatile__(
					"	cld\n"
					"	shr $2,%0\n"
					"	jnc 1f\n"
					"	movsw\n"
					"1:\n"
					"	repnz; movsl\n"
					: "=c" (len), "=&S" (src_ptr), "=&D" (dst_ptr)
					: "0"  (len), "1"   (src_ptr), "2"   (dst_ptr)
				);
			}

		#else // ! COMPILE_ix86_ASM

			extern void kvi_fastmove(void *dst_ptr,const void *src_ptr,int len);
			extern void kvi_fastmoveodd(void *dst_ptr,const void *src_ptr,int len);

		#endif // !COMPILE_ix86_ASM

	#endif // COMPILE_WITH_SYSTEM_MEMMOVE

#endif // _KVI_MEMMOVE_CPP_

#endif // !_KVI_MEMMOVE_H_
