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      1  1.4  joerg /*	$NetBSD: strrchr.S,v 1.4 2017/02/25 21:16:50 joerg Exp $	*/
      2  1.1    dsl 
      3  1.1    dsl /*-
      4  1.1    dsl  * Copyright (c) 1991, 1993
      5  1.1    dsl  *	The Regents of the University of California.  All rights reserved.
      6  1.1    dsl  *
      7  1.1    dsl  * This code is derived from software contributed to Berkeley by
      8  1.1    dsl  * Ralph Campbell.
      9  1.1    dsl  *
     10  1.1    dsl  * Redistribution and use in source and binary forms, with or without
     11  1.1    dsl  * modification, are permitted provided that the following conditions
     12  1.1    dsl  * are met:
     13  1.1    dsl  * 1. Redistributions of source code must retain the above copyright
     14  1.1    dsl  *    notice, this list of conditions and the following disclaimer.
     15  1.1    dsl  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1    dsl  *    notice, this list of conditions and the following disclaimer in the
     17  1.1    dsl  *    documentation and/or other materials provided with the distribution.
     18  1.1    dsl  * 3. Neither the name of the University nor the names of its contributors
     19  1.1    dsl  *    may be used to endorse or promote products derived from this software
     20  1.1    dsl  *    without specific prior written permission.
     21  1.1    dsl  *
     22  1.1    dsl  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  1.1    dsl  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  1.1    dsl  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  1.1    dsl  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  1.1    dsl  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  1.1    dsl  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  1.1    dsl  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  1.1    dsl  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  1.1    dsl  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  1.1    dsl  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  1.1    dsl  * SUCH DAMAGE.
     33  1.1    dsl  */
     34  1.1    dsl 
     35  1.1    dsl #include <mips/asm.h>
     36  1.1    dsl 
     37  1.1    dsl #if defined(LIBC_SCCS) && !defined(lint)
     38  1.1    dsl 	ASMSTR("from: @(#)rindex.s	8.1 (Berkeley) 6/4/93")
     39  1.4  joerg 	ASMSTR("$NetBSD: strrchr.S,v 1.4 2017/02/25 21:16:50 joerg Exp $")
     40  1.1    dsl #endif /* LIBC_SCCS and not lint */
     41  1.1    dsl 
     42  1.4  joerg #ifdef __mips_abicalls
     43  1.1    dsl 	.abicalls
     44  1.1    dsl #endif
     45  1.1    dsl 
     46  1.1    dsl LEAF(strrchr)
     47  1.1    dsl XLEAF(rindex)
     48  1.3   matt 	and	a1, 0xff		# limit to byte value
     49  1.1    dsl 	move	v0, zero		# default if not found
     50  1.1    dsl 1:
     51  1.1    dsl 	lbu	a3, 0(a0)		# get a byte
     52  1.2   matt 	PTR_ADDU a0, a0, 1
     53  1.1    dsl 	bne	a3, a1, 2f
     54  1.2   matt 	PTR_SUBU v0, a0, 1		# save address of last match
     55  1.1    dsl 2:
     56  1.1    dsl 	bne	a3, zero, 1b		# continue if not end
     57  1.1    dsl 	j	ra
     58  1.1    dsl END(strrchr)
     59