100 lines
2.5 KiB
ArmAsm
100 lines
2.5 KiB
ArmAsm
/* $NetBSD: movstr.S,v 1.9 2009/01/07 22:15:18 uwe Exp $ */
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/*-
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* Copyright (C) 1999 Tsubai Masanari. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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#ifdef __ELF__
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.hidden __movstr, __movmem
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#endif
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NENTRY(__movstr)
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mov #16, r0
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cmp/gt r0, r6
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bf loop2
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.align 2
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loop1:
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mov.l @r5+, r0
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mov.l r0, @r4
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mov.l @r5+, r0
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mov.l r0, @(4, r4)
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mov.l @r5+, r0
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mov.l r0, @(8, r4)
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mov.l @r5+, r0
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mov.l r0, @(12, r4)
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mov.l @r5+, r0
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mov.l r0, @(16, r4)
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mov.l @r5+, r0
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mov.l r0, @(20, r4)
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mov.l @r5+, r0
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mov.l r0, @(24, r4)
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mov.l @r5+, r0
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mov.l r0, @(28, r4)
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mov.l @r5+, r0
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mov.l r0, @(32, r4)
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mov.l @r5+, r0
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mov.l r0, @(36, r4)
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mov.l @r5+, r0
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mov.l r0, @(40, r4)
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mov.l @r5+, r0
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mov.l r0, @(44, r4)
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mov.l @r5+, r0
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mov.l r0, @(48, r4)
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mov.l @r5+, r0
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mov.l r0, @(52, r4)
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mov.l @r5+, r0
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mov.l r0, @(56, r4)
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mov.l @r5+, r0
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mov.l r0, @(60, r4)
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add #-16, r6
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add #64, r4
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mov #16, r0
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cmp/gt r0, r6
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bt loop1
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loop2:
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add #-32, r6
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.align 2
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1:
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mov.l @r5+, r0
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mov.l r0, @r4
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add #4, r4
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add #1, r6
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tst r6, r6
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bf 1b
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rts
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nop
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/* gcc4 uses movmem, older versions use movstr */
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STRONG_ALIAS(__movmem, __movstr)
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