/*      $NetBSD: strchr.S,v 1.5 2017/02/25 21:16:50 joerg Exp $ */

/*-
* Copyright (c) 1991, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <mips/asm.h>

#if defined(LIBC_SCCS) && !defined(lint)
       ASMSTR("from: @(#)index.s       8.1 (Berkeley) 6/4/93")
       ASMSTR("$NetBSD: strchr.S,v 1.5 2017/02/25 21:16:50 joerg Exp $")
#endif /* LIBC_SCCS and not lint */

#ifdef __mips_abicalls
       .abicalls
#endif

LEAF(strchr)
XLEAF(index)
       and     a1, 0xff                # limit to byte value
1:
       lbu     a2, 0(a0)               # get a byte
       PTR_ADDU a0, 1
       beq     a2, a1, fnd
       bne     a2, zero, 1b
notfnd:
       move    v0, zero
       j       ra
fnd:
       PTR_SUBU v0, a0, 1
       j       ra
END(strchr)