mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 21:57:43 +00:00
97873a3daf
Based on 1 normalized pattern(s): this file is part of the linux kernel and is made available under the terms of the gnu general public license version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 28 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.534229504@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
65 lines
961 B
ArmAsm
65 lines
961 B
ArmAsm
/* 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
|
|
|
|
GLOBAL(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
|
|
ENDPROC(memcpy)
|
|
|
|
GLOBAL(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
|
|
ENDPROC(memset)
|
|
|
|
GLOBAL(copy_from_fs)
|
|
pushw %ds
|
|
pushw %fs
|
|
popw %ds
|
|
calll memcpy
|
|
popw %ds
|
|
retl
|
|
ENDPROC(copy_from_fs)
|
|
|
|
GLOBAL(copy_to_fs)
|
|
pushw %es
|
|
pushw %fs
|
|
popw %es
|
|
calll memcpy
|
|
popw %es
|
|
retl
|
|
ENDPROC(copy_to_fs)
|