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 17#define LDR1W_SHIFT 0 18#define STR1W_SHIFT 0 19 20 .macro ldr1w ptr reg abort 21 W(ldr) \reg, [\ptr], #4 22 .endm 23 24 .macro ldr4w ptr reg1 reg2 reg3 reg4 abort 25 ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4} 26 .endm 27 28 .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort 29 ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} 30 .endm 31 32 .macro ldr1b ptr reg cond=al abort 33 ldr\cond\()b \reg, [\ptr], #1 34 .endm 35 36 .macro str1w ptr reg abort 37 W(str) \reg, [\ptr], #4 38 .endm 39 40 .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort 41 stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} 42 .endm 43 44 .macro str1b ptr reg cond=al abort 45 str\cond\()b \reg, [\ptr], #1 46 .endm 47 48 .macro enter reg1 reg2 49 stmdb sp!, {r0, \reg1, \reg2} 50 .endm 51 52 .macro usave reg1 reg2 53 UNWIND( .save {r0, \reg1, \reg2} ) 54 .endm 55 56 .macro exit reg1 reg2 57 ldmfd sp!, {r0, \reg1, \reg2} 58 .endm 59 60 .text 61 62/* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ 63 64ENTRY(memcpy) 65 66#include "copy_template.S" 67 68ENDPROC(memcpy) 69