2 * linux/arch/arm/lib/memcpy.S
4 * Author: Nicolas Pitre
5 * Created: Sep 28, 2005
6 * Copyright: MontaVista Software, Inc.
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.
13 #include <linux/linkage.h>
14 #include <asm/assembler.h>
15 #include <asm/unwind.h>
16 #include <asm/export.h>
21 .macro ldr1w ptr reg abort
22 W(ldr) \reg, [\ptr], #4
25 .macro ldr4w ptr reg1 reg2 reg3 reg4 abort
26 ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4}
29 .macro ldr8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
30 ldmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
33 .macro ldr1b ptr reg cond=al abort
34 ldr\cond\()b \reg, [\ptr], #1
37 .macro str1w ptr reg abort
38 W(str) \reg, [\ptr], #4
41 .macro str8w ptr reg1 reg2 reg3 reg4 reg5 reg6 reg7 reg8 abort
42 stmia \ptr!, {\reg1, \reg2, \reg3, \reg4, \reg5, \reg6, \reg7, \reg8}
45 .macro str1b ptr reg cond=al abort
46 str\cond\()b \reg, [\ptr], #1
49 .macro enter reg1 reg2
50 stmdb sp!, {r0, \reg1, \reg2}
53 .macro usave reg1 reg2
54 UNWIND( .save {r0, \reg1, \reg2} )
58 ldmfd sp!, {r0, \reg1, \reg2}
63 /* Prototype: void *memcpy(void *dest, const void *src, size_t n); */
68 #include "copy_template.S"
73 EXPORT_SYMBOL(mmiocpy)