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linux-next/arch/unicore32/lib/copy_page.S

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-04 16:11:33 +08:00
/* SPDX-License-Identifier: GPL-2.0-only */
unicore32 additional architecture files: low-level lib: uaccess This patch implements low-level uaccess libraries. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-02-26 18:49:26 +08:00
/*
* linux/arch/unicore32/lib/copy_page.S
*
* Code specific to PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2010 GUAN Xue-tao
*
* ASM optimised string functions
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <generated/asm-offsets.h>
#include <asm/cache.h>
#define COPY_COUNT (PAGE_SZ/256)
.text
.align 5
/*
* UniCore optimised copy_page routine
*/
ENTRY(copy_page)
stm.w (r17 - r19, lr), [sp-]
mov r17, r0
mov r18, r1
mov r19, #COPY_COUNT
1:
.rept 4
ldm.w (r0 - r15), [r18]+
stm.w (r0 - r15), [r17]+
.endr
sub.a r19, r19, #1
bne 1b
ldm.w (r17 - r19, pc), [sp]+
ENDPROC(copy_page)
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