/*      $NetBSD: movstr.S,v 1.9 2009/01/07 22:15:18 uwe Exp $   */

/*-
 * Copyright (C) 1999 Tsubai Masanari.  All rights reserved.
 *
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <machine/asm.h>


#ifdef __ELF__
        .hidden __movstr, __movmem
#endif


NENTRY(__movstr)
        mov     #16, r0
        cmp/gt  r0, r6
        bf      loop2

        .align  2
loop1:
        mov.l   @r5+, r0
        mov.l   r0, @r4
        mov.l   @r5+, r0
        mov.l   r0, @(4, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(8, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(12, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(16, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(20, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(24, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(28, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(32, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(36, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(40, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(44, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(48, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(52, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(56, r4)
        mov.l   @r5+, r0
        mov.l   r0, @(60, r4)
        add     #-16, r6
        add     #64, r4

        mov     #16, r0
        cmp/gt  r0, r6
        bt      loop1

loop2:
        add     #-32, r6
        .align  2
1:
        mov.l   @r5+, r0
        mov.l   r0, @r4
        add     #4, r4
        add     #1, r6
        tst     r6, r6
        bf      1b

        rts
         nop


/* gcc4 uses movmem, older versions use movstr */
STRONG_ALIAS(__movmem, __movstr)