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Annotation of src/common/lib/libc/arch/mips/string/strrchr.S, Revision 1.1

1.1     ! dsl         1: /*     $NetBSD: rindex.S,v 1.7 2003/08/07 16:42:16 agc Exp $   */
        !             2:
        !             3: /*-
        !             4:  * Copyright (c) 1991, 1993
        !             5:  *     The Regents of the University of California.  All rights reserved.
        !             6:  *
        !             7:  * This code is derived from software contributed to Berkeley by
        !             8:  * Ralph Campbell.
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  * 3. Neither the name of the University nor the names of its contributors
        !            19:  *    may be used to endorse or promote products derived from this software
        !            20:  *    without specific prior written permission.
        !            21:  *
        !            22:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            23:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            24:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            25:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            26:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            27:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            28:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            29:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            30:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            31:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            32:  * SUCH DAMAGE.
        !            33:  */
        !            34:
        !            35: #include <mips/asm.h>
        !            36:
        !            37: #if defined(LIBC_SCCS) && !defined(lint)
        !            38:        ASMSTR("from: @(#)rindex.s      8.1 (Berkeley) 6/4/93")
        !            39:        ASMSTR("$NetBSD: rindex.S,v 1.7 2003/08/07 16:42:16 agc Exp $")
        !            40: #endif /* LIBC_SCCS and not lint */
        !            41:
        !            42: #ifdef __ABICALLS__
        !            43:        .abicalls
        !            44: #endif
        !            45:
        !            46: LEAF(strrchr)
        !            47: XLEAF(rindex)
        !            48:        move    v0, zero                # default if not found
        !            49: 1:
        !            50:        lbu     a3, 0(a0)               # get a byte
        !            51:        addu    a0, a0, 1
        !            52:        bne     a3, a1, 2f
        !            53:        subu    v0, a0, 1               # save address of last match
        !            54: 2:
        !            55:        bne     a3, zero, 1b            # continue if not end
        !            56:        j       ra
        !            57: END(strrchr)