74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
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/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: Implementation of memset() and wmemset().
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*
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****************************************************************************/
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#include "variety.h"
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#include "widechar.h"
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#include <string.h>
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#include <wchar.h>
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#include "xstring.h"
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#if defined(__386__)
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extern void __STOSB( void *, int, unsigned );
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#pragma aux __STOSB "*" parm [eax] [edx] [ecx];
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extern void *__set386( void *, int, unsigned );
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#pragma aux __set386 = \
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"push EAX" /* save return value*/\
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"mov DH,DL" /* duplicate byte value thru EDX */\
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"shl EDX,8" /* ... */\
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"mov DL,DH" /* ... */\
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"shl EDX,8" /* ... */\
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"mov DL,DH" /* ... */\
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"call __STOSB" /* do store */\
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"pop EAX" /* restore return value*/\
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parm [eax] [edx] [ecx] \
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value [eax];
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#endif
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_WCRTLINK VOID_WC_TYPE *__F_NAME(memset,wmemset)( VOID_WC_TYPE *dst, INT_WC_TYPE c, size_t len )
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{
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#if defined(__INLINE_FUNCTIONS__) && !defined(__WIDECHAR__) && defined(_M_IX86)
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#if defined(__386__)
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return( __set386( dst, c, len ) );
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#else
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return( _inline_memset( dst, c, len ) );
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#endif
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#else
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CHAR_TYPE *p;
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for( p = dst; len; --len ) {
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*p++ = c;
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}
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return( dst );
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#endif
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}
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