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| author | Raphael Poggi <poggi.raph@gmail.com> | 2016-07-04 13:52:46 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-07-06 11:23:48 +0200 |
| commit | e1287b1a8b27d366f459e890fb260deea2906749 (patch) | |
| tree | b2cca10b510e578438db046639fb6aa0f6e0d043 /arch/arm/lib32/memcpy.S | |
| parent | 375170a3c9fad9d119a0a729da87b6285a2731ca (diff) | |
| download | barebox-e1287b1a8b27d366f459e890fb260deea2906749.tar.gz barebox-e1287b1a8b27d366f459e890fb260deea2906749.tar.xz | |
arm: rework lib directory to support arm64
This commit create a common directory, lib/,
for arm and arm64 common code.
It also create lib32/ and lib64/ for 32bit
and 64bit code respectively.
Signed-off-by: Raphael Poggi <poggi.raph@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/lib32/memcpy.S')
| -rw-r--r-- | arch/arm/lib32/memcpy.S | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/lib32/memcpy.S b/arch/arm/lib32/memcpy.S new file mode 100644 index 0000000000..5123691ca9 --- /dev/null +++ b/arch/arm/lib32/memcpy.S @@ -0,0 +1,64 @@ +/* + * 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> + +#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 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) + |