/* * linux/arch/arm/lib/memcpy.S * * Author: Nicolas Pitre * Created: Sep 28, 2005 * Copyright: MontaVista Software, Inc. * * 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. */ #include <linux/linkage.h> #include <asm/assembler.h> #include <asm/unwind.h> #define LDR1W_SHIFT 0 #define STR1W_SHIFT 0 .macro ldr1w ptr reg abort W(ldr) \reg, [\ptr], #4 .endm .macro ldr4w ptr reg1 reg2 reg3 reg4 abort ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4} .endm .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} .endm .macro ldr1b ptr reg cond=al abort ldr\cond\()b \reg, [\ptr], #1 .endm .macro str1w ptr reg abort W(str) \reg, [\ptr], #4 .endm .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8} .endm .macro str1b ptr reg cond=al abort str\cond\()b \reg, [\ptr], #1 .endm .macro enter reg1 reg2 stmdb sp!, {r0, \reg1, \reg2} .endm .macro usave reg1 reg2 UNWIND( .save {r0, \reg1, \reg2} ) .endm .macro exit reg1 reg2 ldmfd sp!, {r0, \reg1, \reg2} .endm .text /* Prototype: void *memcpy(void *dest, const void *src, size_t n); */ ENTRY(memcpy) #include "copy_template.S" ENDPROC(memcpy)