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m68k: introduce asm/swab.h 

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Harvey Harrison 2009-01-06 14:56:28 -08:00 committed by Linus Torvalds
parent 5d30a68388
commit c6f09f0c32
3 changed files with 19 additions and 14 deletions
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1
include/asm-m68k/Kbuild
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@ -1,2 +1,3 @@
include include/asm-generic/Kbuild.asm
header-y += cachectl.h
unifdef-y += swab.h

16
include/asm-m68k/byteorder.h
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@ -1,19 +1,7 @@
#ifndef _M68K_BYTEORDER_H
#define _M68K_BYTEORDER_H
#include <asm/types.h>
#include <linux/compiler.h>
#define __BIG_ENDIAN
#define __SWAB_64_THRU_32__
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
__asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
return val;
}
#define __arch_swab32 __arch_swab32
#include <linux/byteorder.h>
#include <asm/swab.h>
#include <linux/byteorder/big_endian.h>
#endif /* _M68K_BYTEORDER_H */

16
include/asm-m68k/swab.h 100644
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@ -0,0 +1,16 @@
#ifndef _M68K_SWAB_H
#define _M68K_SWAB_H
#include <asm/types.h>
#include <linux/compiler.h>
#define __SWAB_64_THRU_32__
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
__asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
return val;
}
#define __arch_swab32 __arch_swab32
#endif /* _M68K_SWAB_H */