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mn10300: introduce asm/swab.h

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Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Harvey Harrison 2009-01-06 14:56:34 -08:00 committed by Linus Torvalds
parent 919594765d
commit 5cbd04ae36
3 changed files with 44 additions and 40 deletions
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1
include/asm-mn10300/Kbuild
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@ -1 +1,2 @@
include include/asm-generic/Kbuild.asm
unifdef-y += swab.h

41
include/asm-mn10300/byteorder.h
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@ -1,46 +1,7 @@
/* MN10300 Byte-order primitive construction
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_BYTEORDER_H
#define _ASM_BYTEORDER_H
#include <asm/types.h>
#ifdef __GNUC__
static inline __attribute__((const))
__u32 ___arch__swab32(__u32 x)
{
__u32 ret;
asm("swap %1,%0" : "=r" (ret) : "r" (x));
return ret;
}
static inline __attribute__((const))
__u16 ___arch__swab16(__u16 x)
{
__u16 ret;
asm("swaph %1,%0" : "=r" (ret) : "r" (x));
return ret;
}
#define __arch__swab32(x) ___arch__swab32(x)
#define __arch__swab16(x) ___arch__swab16(x)
#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
# define __BYTEORDER_HAS_U64__
# define __SWAB_64_THRU_32__
#endif
#endif /* __GNUC__ */
#include <asm/swab.h>
#include <linux/byteorder/little_endian.h>
#endif /* _ASM_BYTEORDER_H */

42
include/asm-mn10300/swab.h Normal file
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@ -0,0 +1,42 @@
/* MN10300 Byte-order primitive construction
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _ASM_SWAB_H
#define _ASM_SWAB_H
#include <asm/types.h>
#ifdef __GNUC__
static inline __attribute__((const))
__u32 __arch_swab32(__u32 x)
{
__u32 ret;
asm("swap %1,%0" : "=r" (ret) : "r" (x));
return ret;
}
#define __arch_swab32 __arch_swab32
static inline __attribute__((const))
__u16 __arch_swab16(__u16 x)
{
__u16 ret;
asm("swaph %1,%0" : "=r" (ret) : "r" (x));
return ret;
}
#define __arch_swab32 __arch_swab32
#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
# define __SWAB_64_THRU_32__
#endif
#endif /* __GNUC__ */
#endif /* _ASM_SWAB_H */