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106 lines
2.9 KiB
106 lines
2.9 KiB
#ifndef _KVI_MEMMOVE_H_
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#define _KVI_MEMMOVE_H_
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//=============================================================================
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//
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// File : kvi_memmove.h
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// Creation date : Fri Mar 19 1999 03:15:21 CEST by Szymon Stefanek
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//
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// This file is part of the KVirc irc client distribution
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// Copyright (C) 1999-2006 Szymon Stefanek (pragma at kvirc dot net)
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//
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// This program is FREE software. You can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your opinion) any later version.
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//
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// This program is distributed in the HOPE that it will be USEFUL,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, write to the Free Software Foundation,
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// Inc. ,51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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//=============================================================================
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#define __KVILIB__
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#include "kvi_settings.h"
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//#undef COMPILE_WITH_SYSTEM_MEMMOVE
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//#define COMPILE_MMX_ASM
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#ifndef _KVI_MEMMOVE_CPP_
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#ifdef COMPILE_WITH_SYSTEM_MEMMOVE
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#include <string.h>
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#define kvi_memmove memmove
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#define kvi_memmoveodd memmove
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#define kvi_memset memset
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#define kvi_fastmove memcpy
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#define kvi_fastmoveodd memcpy
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#else
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#ifdef COMPILE_ON_WINDOWS
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#error "This stuff should be never compiled on Windows"
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#endif
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extern void *kvi_memmove(void *dst_ptr,const void *src_ptr,int len);
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extern void *kvi_memmoveodd(void *dst_ptr,const void *src_ptr,int len);
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extern void *kvi_memset(void *dst_ptr,char c,int len);
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// In fastmove the src and dst may not overlap
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#ifdef COMPILE_ix86_ASM
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// WE WANT repnz; movsq\n"!!!
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inline void kvi_fastmove(void * dst_ptr,const void *src_ptr,int len)
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{
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__asm__ __volatile__(
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" cld\n"
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" shr $1,%0\n"
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" jnc 1f\n"
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" movsb\n"
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"1:\n"
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" shr $1,%0\n"
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" jnc 2f\n"
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" movsw\n"
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"2:\n"
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" repnz; movsl\n"
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: "=c" (len), "=&S" (src_ptr), "=&D" (dst_ptr)
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: "0" (len), "1" (src_ptr), "2" (dst_ptr)
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);
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}
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inline void kvi_fastmoveodd(void * dst_ptr,const void *src_ptr,int len)
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{
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__asm__ __volatile__(
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" cld\n"
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" shr $2,%0\n"
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" jnc 1f\n"
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" movsw\n"
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"1:\n"
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" repnz; movsl\n"
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: "=c" (len), "=&S" (src_ptr), "=&D" (dst_ptr)
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: "0" (len), "1" (src_ptr), "2" (dst_ptr)
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);
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}
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#else // ! COMPILE_ix86_ASM
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extern void kvi_fastmove(void *dst_ptr,const void *src_ptr,int len);
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extern void kvi_fastmoveodd(void *dst_ptr,const void *src_ptr,int len);
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#endif // !COMPILE_ix86_ASM
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#endif // COMPILE_WITH_SYSTEM_MEMMOVE
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#endif // _KVI_MEMMOVE_CPP_
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#endif // !_KVI_MEMMOVE_H_
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