f14fb60209
* Updating common/lib * Updating lib/csu * Updating lib/libc * Updating libexec/ld.elf_so * Corrected test on __minix in featuretest to actually follow the meaning of the comment. * Cleaned up _REENTRANT-related defintions. * Disabled -D_REENTRANT for libfetch * Removing some unneeded __NBSD_LIBC defines and tests Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
72 lines
2.1 KiB
ArmAsm
72 lines
2.1 KiB
ArmAsm
/* $NetBSD: memcpy.S,v 1.1 2011/06/16 16:39:14 joerg Exp $ */
|
|
/*-
|
|
* Copyright (c) 2011 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Joerg Sonnenberger.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <machine/asm.h>
|
|
RCSID("$NetBSD: memcpy.S,v 1.1 2011/06/16 16:39:14 joerg Exp $")
|
|
|
|
# ifdef BCOPY
|
|
ENTRY(bcopy)
|
|
pushl %esi
|
|
pushl %edi
|
|
movl 12(%esp), %esi
|
|
movl 16(%esp), %edi
|
|
jmp __memmove_start
|
|
# endif
|
|
# if defined(MEMMOVE)
|
|
ENTRY(memcpy)
|
|
ENTRY(memmove)
|
|
pushl %esi
|
|
pushl %edi
|
|
movl 12(%esp), %edi
|
|
movl 16(%esp), %esi
|
|
.globl __memmove_start
|
|
__memmove_start:
|
|
movl 20(%esp), %ecx
|
|
pushl %edi
|
|
testl %ecx, %ecx
|
|
jz 2f
|
|
cmpl %esi, %edi
|
|
jb 1f
|
|
addl %ecx, %esi
|
|
decl %esi
|
|
addl %ecx, %edi
|
|
decl %edi
|
|
std
|
|
1:
|
|
rep
|
|
movsb
|
|
2:
|
|
cld
|
|
popl %eax
|
|
popl %edi
|
|
popl %esi
|
|
ret
|
|
# endif /* MEMMOVE */
|