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m68k: merge the non-MMU and MMU versions of swab.h 

It is trivial to merge the non-MMU and MMU versions of swab.h.
Without a single file "make headers_install" is broken for m68k
(since each of the sub-varients of swab.h are not installed).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
hifive-unleashed-5.1
Greg Ungerer 2009-03-16 17:54:49 +10:00
parent f9847004bf
commit 9863a0babc
3 changed files with 26 additions and 44 deletions
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30
arch/m68k/include/asm/swab.h
View File

@ -1,5 +1,27 @@
#ifdef __uClinux__
#include "swab_no.h"
#else
#include "swab_mm.h"
#ifndef _M68K_SWAB_H
#define _M68K_SWAB_H
#include <asm/types.h>
#include <linux/compiler.h>
#define __SWAB_64_THRU_32__
#if defined (__mcfisaaplus__) || defined (__mcfisac__)
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
__asm__("byterev %0" : "=d" (val) : "0" (val));
return val;
}
#define __arch_swab32 __arch_swab32
#elif !defined(__uClinux__)
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
#endif /* _M68K_SWAB_H */

16
arch/m68k/include/asm/swab_mm.h
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@ -1,16 +0,0 @@
#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 */

24
arch/m68k/include/asm/swab_no.h
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@ -1,24 +0,0 @@
#ifndef _M68KNOMMU_SWAB_H
#define _M68KNOMMU_SWAB_H
#include <linux/types.h>
#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
# define __SWAB_64_THRU_32__
#endif
#if defined (__mcfisaaplus__) || defined (__mcfisac__)
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
asm(
"byterev %0"
: "=d" (val)
: "0" (val)
);
return val;
}
#define __arch_swab32 __arch_swab32
#endif
#endif /* _M68KNOMMU_SWAB_H */