1/* 2 * linux/arch/arm/lib/memcpy.S 3 * 4 * Author: Nicolas Pitre 5 * Created: Sep 28, 2005 6 * Copyright: MontaVista Software, Inc. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13#include <linux/linkage.h> 14#include <asm/assembler.h> 15#include <asm/unwind.h> 16#include <asm/export.h> 17 18#define LDR1W_SHIFT 0 19#define STR1W_SHIFT 0 20 21 .macro ldr1w ptr reg abort 22 W(ldr) \reg, [\ptr], #4 23 .endm 24 25 .macro ldr4w ptr reg1 reg2 reg3 reg4 abort 26 ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4} 27 .endm 28 29 .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort 30 ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} 31 .endm 32 33 .macro ldr1b ptr reg cond=al abort 34 ldr\cond\()b \reg, [\ptr], #1 35 .endm 36 37 .macro str1w ptr reg abort 38 W(str) \reg, [\ptr], #4 39 .endm 40 41 .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort 42 stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} 43 .endm 44 45 .macro str1b ptr reg cond=al abort 46 str\cond\()b \reg, [\ptr], #1 47 .endm 48 49 .macro enter reg1 reg2 50 stmdb sp!, {r0, \reg1, \reg2} 51 .endm 52 53 .macro usave reg1 reg2 54 UNWIND( .save {r0, \reg1, \reg2} ) 55 .endm 56 57 .macro exit reg1 reg2 58 ldmfd sp!, {r0, \reg1, \reg2} 59 .endm 60 61 .text 62 63/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ 64 65ENTRY(mmiocpy) 66ENTRY(memcpy) 67 68#include "copy_template.S" 69 70ENDPROC(memcpy) 71ENDPROC(mmiocpy) 72EXPORT_SYMBOL(memcpy) 73EXPORT_SYMBOL(mmiocpy) 74