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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)
|
|
