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/*
* linux/arch/unicore32/lib/copy_page.S
*
* Code specific to PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2010 GUAN Xue-tao
*
* 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.
*
* 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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