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| 553 | serge | 1 | /**************************************************************************** |
| 2 | * |
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| 3 | * Open Watcom Project |
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| 4 | * |
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| 5 | * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
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| 6 | * |
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| 7 | * ======================================================================== |
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| 8 | * |
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| 9 | * This file contains Original Code and/or Modifications of Original |
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| 10 | * Code as defined in and that are subject to the Sybase Open Watcom |
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| 11 | * Public License version 1.0 (the 'License'). You may not use this file |
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| 12 | * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
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| 13 | * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
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| 14 | * provided with the Original Code and Modifications, and is also |
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| 15 | * available at www.sybase.com/developer/opensource. |
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| 16 | * |
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| 17 | * The Original Code and all software distributed under the License are |
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| 18 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
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| 19 | * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
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| 20 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
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| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
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| 22 | * NON-INFRINGEMENT. Please see the License for the specific language |
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| 23 | * governing rights and limitations under the License. |
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| 24 | * |
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| 25 | * ======================================================================== |
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| 26 | * |
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| 27 | * Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE |
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| 28 | * DESCRIBE IT HERE! |
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| 29 | * |
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| 30 | ****************************************************************************/ |
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| 31 | |||
| 32 | |||
| 33 | #include "variety.h" |
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| 34 | #include |
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| 35 | |||
| 36 | #ifdef M_I86 |
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| 37 | |||
| 38 | extern char _WCFAR * _scan1( char _WCFAR *s, int c ); |
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| 39 | |||
| 40 | /* use scan1 to find the char we are looking for */ |
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| 41 | |||
| 42 | #pragma aux _scan1 = 0x1e /* push ds */\ |
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| 43 | 0x8e 0xda /* mov ds,dx */\ |
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| 44 | 0xad /* L1:lodsw */\ |
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| 45 | 0x38 0xd8 /* cmp al,bl */\ |
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| 46 | 0x74 0x22 /* je L3 */\ |
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| 47 | 0x84 0xc0 /* test al,al*/\ |
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| 48 | 0x74 0x19 /* je L2 */\ |
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| 49 | 0x38 0xdc /* cmp ah,bl */\ |
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| 50 | 0x74 0x1b /* je L4 */\ |
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| 51 | 0x84 0xe4 /* test ah,ah*/\ |
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| 52 | 0x74 0x11 /* je L2 */\ |
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| 53 | 0xad /* lodsw */\ |
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| 54 | 0x38 0xd8 /* cmp al,bl */\ |
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| 55 | 0x74 0x11 /* je L3 */\ |
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| 56 | 0x84 0xc0 /* test al,al*/\ |
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| 57 | 0x74 0x08 /* je L2 */\ |
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| 58 | 0x38 0xdc /* cmp ah,bl */\ |
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| 59 | 0x74 0x0a /* je L4 */\ |
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| 60 | 0x84 0xe4 /* test ah,ah*/\ |
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| 61 | 0x75 0xde /* jne L1 */\ |
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| 62 | 0x31 0xf6 /* L2:xor si,si*/\ |
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| 63 | 0x89 0xf2 /* mov dx,si */\ |
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| 64 | 0xa9 /* test ax,... */\ |
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| 65 | 0x4e /* L3:dec si */\ |
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| 66 | 0x4e /* L4:dec si */\ |
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| 67 | 0x1f /* pop ds */\ |
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| 68 | parm caller [dx si] [bl]\ |
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| 69 | value [dx si]\ |
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| 70 | modify [ax dx si]; |
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| 71 | #endif |
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| 72 | |||
| 73 | |||
| 74 | /* locate the first occurrence of c in the initial n characters of the |
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| 75 | string pointed to by s. The terminating null character is considered |
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| 76 | to be part of the string. |
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| 77 | If the character c is not found, NULL is returned. |
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| 78 | */ |
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| 79 | #undef _fstrchr |
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| 80 | |||
| 81 | _WCRTLINK char _WCFAR *_fstrchr( const char _WCFAR *s, int c ) |
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| 82 | { |
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| 83 | //#if defined(M_I86) |
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| 84 | //return( _scan1( (char _WCFAR *)s, c ) ); |
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| 85 | //#else |
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| 86 | do { |
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| 87 | if( *s == c ) return( (char _WCFAR *)s ); |
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| 88 | } while( *s++ != '\0' ); |
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| 89 | return( NULL ); |
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| 90 | //#endif |
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| 91 | } |