mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-14 02:47:07 +03:00
107 lines
3.8 KiB
C
107 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: Implementation of strchr() and wcsrchr().
|
|
*
|
|
****************************************************************************/
|
|
|
|
|
|
#include "variety.h"
|
|
#include "widechar.h"
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
#include "riscstr.h"
|
|
|
|
#if defined(M_I86) && !defined(__WIDECHAR__)
|
|
|
|
extern char *_fast_strrchr( const char _WCFAR *, char );
|
|
|
|
#if defined(__SMALL_DATA__)
|
|
#pragma aux _fast_strrchr = \
|
|
0xb9 0xff 0xff /* mov cx,ffffh */ \
|
|
0x30 0xc0 /* xor al,al */ \
|
|
0xf2 0xae /* repne scasb */ \
|
|
0xf7 0xd1 /* not cx */ \
|
|
0x4f /* dec di */ \
|
|
0x88 0xd0 /* mov al,dl */ \
|
|
0xfd /* std */ \
|
|
0xf2 0xae /* repne scasb */ \
|
|
0xfc /* cld */ \
|
|
0x75 0x03 /* jne L1 */ \
|
|
0x89 0xf9 /* mov cx,di */ \
|
|
0x41 /* inc cx */ \
|
|
/* L1: */ \
|
|
parm caller [es di] [dl] \
|
|
value [cx] \
|
|
modify exact [cx ax di];
|
|
#else
|
|
#pragma aux _fast_strrchr = \
|
|
0xb9 0xff 0xff /* mov cx,ffffh */ \
|
|
0x30 0xc0 /* xor al,al */ \
|
|
0xf2 0xae /* repne scasb */ \
|
|
0xf7 0xd1 /* not cx */ \
|
|
0x4f /* dec di */ \
|
|
0x88 0xd8 /* mov al,bl */ \
|
|
0xfd /* std */ \
|
|
0xf2 0xae /* repne scasb */ \
|
|
0xfc /* cld */ \
|
|
0x75 0x04 /* jne L1 */ \
|
|
0x89 0xf9 /* mov cx,di */ \
|
|
0x41 /* inc cx */ \
|
|
0xa9 /* hide 2 bytes */ \
|
|
0x8e 0xc1 /* L1: mov es,cx */ \
|
|
parm caller [es di] [bl] \
|
|
value [es cx] \
|
|
modify exact [es cx ax di];
|
|
#endif
|
|
#endif
|
|
|
|
/* Locate the last occurrence of c in the string pointed to by s.
|
|
The terminating null character is considered to be part of the string.
|
|
If the character c is not found, NULL is returned.
|
|
*/
|
|
|
|
|
|
#if defined(__RISCSTR__) && defined(__WIDECHAR__)
|
|
_WCRTLINK CHAR_TYPE *__simple_wcsrchr( const CHAR_TYPE *s, INTCHAR_TYPE c )
|
|
#else
|
|
_WCRTLINK CHAR_TYPE *__F_NAME(strrchr,wcsrchr)( const CHAR_TYPE *s, INTCHAR_TYPE c )
|
|
#endif
|
|
{
|
|
#if defined(M_I86) && !defined(__WIDECHAR__)
|
|
return( _fast_strrchr( s, c ) );
|
|
#else
|
|
CHAR_TYPE *p;
|
|
CHAR_TYPE cc = c;
|
|
|
|
p = NULL; /* assume c will not be found */
|
|
do {
|
|
if( *s == cc ) p = (CHAR_TYPE *)s;
|
|
} while( *s++ != NULLCHAR );
|
|
return( p );
|
|
#endif
|
|
}
|