forked from KolibriOS/kolibrios
105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
|
/****************************************************************************
|
||
|
|
*
|
||
|
|
* Open Watcom Project
|
||
|
|
*
|
||
|
|
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* ========================================================================
|
||
|
|
*
|
||
|
|
* This file contains Original Code and/or Modifications of Original
|
||
|
|
* Code as defined in and that are subject to the Sybase Open Watcom
|
||
|
|
* Public License version 1.0 (the 'License'). You may not use this file
|
||
|
|
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
|
||
|
|
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
|
||
|
|
* provided with the Original Code and Modifications, and is also
|
||
|
|
* available at www.sybase.com/developer/opensource.
|
||
|
|
*
|
||
|
|
* The Original Code and all software distributed under the License are
|
||
|
|
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
|
||
|
|
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
|
||
|
|
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
|
||
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
|
||
|
|
* NON-INFRINGEMENT. Please see the License for the specific language
|
||
|
|
* governing rights and limitations under the License.
|
||
|
|
*
|
||
|
|
* ========================================================================
|
||
|
|
*
|
||
|
|
* Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
|
||
|
|
* DESCRIBE IT HERE!
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
|
||
|
|
#include "variety.h"
|
||
|
|
#include "widechar.h"
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include "riscstr.h"
|
||
|
|
|
||
|
|
#if defined(M_I86) && !defined(__WIDECHAR__)
|
||
|
|
|
||
|
|
extern int _fast_strncmp( const char *, const char _WCFAR *, size_t );
|
||
|
|
|
||
|
|
#if defined(__SMALL_DATA__)
|
||
|
|
#pragma aux _fast_strncmp = \
|
||
|
|
0x89 0xfa /* mov dx,di */ \
|
||
|
|
0x30 0xc0 /* xor al,al */ \
|
||
|
|
0xf2 0xae /* repne scasb */ \
|
||
|
|
0x89 0xf9 /* mov cx,di */ \
|
||
|
|
0x89 0xd7 /* mov di,dx */ \
|
||
|
|
0x29 0xf9 /* sub cx,di */ \
|
||
|
|
0xf3 0xa6 /* repe cmpsb */ \
|
||
|
|
0x74 0x05 /* je L1 */ \
|
||
|
|
0x19 0xc9 /* sbb cx,cx */ \
|
||
|
|
0x83 0xd9 0xff /* sbb cx,ffffh */ \
|
||
|
|
/* L1: */ \
|
||
|
|
parm caller [si] [es di] [cx] \
|
||
|
|
value [cx] \
|
||
|
|
modify exact [dx ax di cx si];
|
||
|
|
#else
|
||
|
|
#pragma aux _fast_strncmp = \
|
||
|
|
0x1e /* push ds */ \
|
||
|
|
0x8e 0xda /* mov ds,dx */ \
|
||
|
|
0x89 0xfa /* mov dx,di */ \
|
||
|
|
0x30 0xc0 /* xor al,al */ \
|
||
|
|
0xf2 0xae /* repne scasb */ \
|
||
|
|
0x89 0xf9 /* mov cx,di */ \
|
||
|
|
0x89 0xd7 /* mov di,dx */ \
|
||
|
|
0x29 0xf9 /* sub cx,di */ \
|
||
|
|
0xf3 0xa6 /* repe cmpsb */ \
|
||
|
|
0x74 0x05 /* je L1 */ \
|
||
|
|
0x19 0xc9 /* sbb cx,cx */ \
|
||
|
|
0x83 0xd9 0xff /* sbb cx,ffffh */ \
|
||
|
|
/* L1: */ \
|
||
|
|
0x1f /* pop ds */ \
|
||
|
|
parm caller [dx si] [es di] [cx] \
|
||
|
|
value [cx] \
|
||
|
|
modify exact [dx ax di cx si];
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* return <0 if s<t, 0 if s==t, >0 if s>t */
|
||
|
|
|
||
|
|
#if defined(__RISCSTR__) && defined(__WIDECHAR__)
|
||
|
|
_WCRTLINK int __simple_wcsncmp( const CHAR_TYPE *s, const CHAR_TYPE *t, size_t n )
|
||
|
|
#else
|
||
|
|
_WCRTLINK int __F_NAME(strncmp,wcsncmp)( const CHAR_TYPE *s, const CHAR_TYPE *t, size_t n )
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
#if defined(M_I86) && !defined(__WIDECHAR__)
|
||
|
|
if( n ) {
|
||
|
|
return( _fast_strncmp( s, t, n ) );
|
||
|
|
}
|
||
|
|
return( 0 );
|
||
|
|
#else
|
||
|
|
for(;;) {
|
||
|
|
if( n == 0 ) return( 0 ); /* equal */
|
||
|
|
if( *s != *t ) return( *s - *t ); /* less than or greater than */
|
||
|
|
if( *s == NULLCHAR ) return( 0 ); /* equal */
|
||
|
|
++s;
|
||
|
|
++t;
|
||
|
|
--n;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|