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- /*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * the Systems Programming Group of the University of Utah Computer
- * Science Department.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that: (1) source distributions retain this entire copyright
- * notice and comment, and (2) distributions including binaries display
- * the following acknowledgement: ``This product includes software
- * developed by the University of California, Berkeley and its contributors''
- * in the documentation or other materials provided with the distribution
- * and in all advertising materials mentioning features or use of this
- * software. Neither the name of the University nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- .asciz "@(#)index.s 5.1 (Berkeley) 5/12/90"
- #endif /* LIBC_SCCS and not lint */
-
- #include "DEFS.h"
-
- ENTRY(index)
- ENTRY(strchr)
- movl sp@(4),a0 /* string */
- movb sp@(11),d0 /* char to look for */
- ixloop:
- cmpb a0@,d0 /* found our char? */
- jeq ixfound /* yes, break out */
- tstb a0@+ /* null? */
- jne ixloop /* no, keep going */
- moveq #0,d0 /* not found, return null */
- rts
- ixfound:
- movl a0,d0 /* found, return pointer */
- rts
-