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/* SPDX-License-Identifier: GPL-2.0-only */
/* ----------------------------------------------------------------------- *
*
* Copyright (C) 1991, 1992 Linus Torvalds
* Copyright 2007 rPath, Inc. - All Rights Reserved
*
* ----------------------------------------------------------------------- */
#include <linux/linkage.h>
/*
* Memory copy routines
*/
.code16
.text
SYM_FUNC_START_NOALIGN(memcpy)
pushw %si
pushw %di
movw %ax, %di
movw %dx, %si
pushw %cx
shrw $2, %cx
rep; movsl
popw %cx
andw $3, %cx
rep; movsb
popw %di
popw %si
retl
SYM_FUNC_END(memcpy)
SYM_FUNC_START_NOALIGN(memset)
pushw %di
movw %ax, %di
movzbl %dl, %eax
imull $0x01010101,%eax
pushw %cx
shrw $2, %cx
rep; stosl
popw %cx
andw $3, %cx
rep; stosb
popw %di
retl
SYM_FUNC_END(memset)
SYM_FUNC_START_NOALIGN(copy_from_fs)
pushw %ds
pushw %fs
popw %ds
calll memcpy
popw %ds
retl
SYM_FUNC_END(copy_from_fs)
SYM_FUNC_START_NOALIGN(copy_to_fs)
pushw %es
pushw %fs
popw %es
calll memcpy
popw %es
retl
SYM_FUNC_END(copy_to_fs)
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