/****************************************************************************
*
* 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 wcschr().
*
****************************************************************************/
#include "variety.h"
#include "widechar.h"
#include <stddef.h>
#include <string.h>
#include "riscstr.h"
#if defined(M_I86) && !defined(__WIDECHAR__)
extern char * _scan1();
/* use scan1 to find the char we are looking for */
#if defined(__SMALL_DATA__)
#pragma aux _scan1 = 0xad /* L1:lodsw */\
0x38 0xd0 /* cmp al,dl */\
0x74 0x20 /* je L3 */\
0x84 0xc0 /* test al,al*/\
0x74 0x19 /* je L2 */\
0x38 0xd4 /* cmp ah,dl */\
0x74 0x19 /* je L4 */\
0x84 0xe4 /* test ah,ah*/\
0x74 0x11 /* je L2 */\
0xad /* lodsw */\
0x38 0xd0 /* cmp al,dl */\
0x74 0x0f /* je L3 */\
0x84 0xc0 /* test al,al*/\
0x74 0x08 /* je L2 */\
0x38 0xd4 /* cmp ah,dl */\
0x74 0x08 /* je L4 */\
0x84 0xe4 /* test ah,ah*/\
0x75 0xde /* jne L1 */\
0x31 0xf6 /* L2:xor si,si */\
0xa9 /* test ax,... */\
0x4e /* L3:dec si */\
0x4e /* L4:dec si */\
parm caller [si] [dl]\
value [si]\
modify [ax si];
#else
#pragma aux _scan1 = \
0x1e /* push ds */ \
0x8e 0xd9 /* mov ds,cx */ \
0x8c 0xda /* mov dx,ds */\
0xad /* L1:lodsw */\
0x38 0xd8 /* cmp al,bl */\
0x74 0x22 /* je L3 */\
0x84 0xc0 /* test al,al*/\
0x74 0x19 /* je L2 */\
0x38 0xdc /* cmp ah,bl */\
0x74 0x1b /* je L4 */\
0x84 0xe4 /* test ah,ah*/\
0x74 0x11 /* je L2 */\
0xad /* lodsw */\
0x38 0xd8 /* cmp al,bl */\
0x74 0x11 /* je L3 */\
0x84 0xc0 /* test al,al*/\
0x74 0x08 /* je L2 */\
0x38 0xdc /* cmp ah,bl */\
0x74 0x0a /* je L4 */\
0x84 0xe4 /* test ah,ah*/\
0x75 0xde /* jne L1 */\
0x31 0xf6 /* L2:xor si,si*/\
0x89 0xf2 /* mov dx,si */\
0xa9 /* test ax,... */\
0x4e /* L3:dec si */\
0x4e /* L4:dec si */\
0x1f /* pop ds */ \
parm caller [cx si] [bl]\
value [dx si]\
modify [ax dx si];
#endif
#endif
/* locate the first occurrence of c in the initial n characters of 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.
*/
#undef strchr
#if defined(__RISCSTR__) && defined(__WIDECHAR__)
_WCRTLINK CHAR_TYPE *__simple_wcschr( const CHAR_TYPE *s, INTCHAR_TYPE c )
#else
_WCRTLINK CHAR_TYPE
*__F_NAME
(strchr,wcschr)( const CHAR_TYPE
*s
, INTCHAR_TYPE c
)#endif
{
CHAR_TYPE cc = c;
do {
if( *s == cc ) return( (CHAR_TYPE *)s );
} while( *s++ != NULLCHAR );
return( NULL );
}