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