Blame view
arch/unicore32/lib/copy_page.S
833 Bytes
77c93b2f2
unicore32 additio...
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 |
/* * 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) |