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sparc: 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>
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Harvey Harrison authored and Linus Torvalds committed Jan 7, 2009
1 parent 1af84a6 commit f4d2b14
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Showing 3 changed files with 48 additions and 44 deletions.
1 change: 1 addition & 0 deletions arch/sparc/include/asm/Kbuild
Original file line number Diff line number Diff line change
Expand Up @@ -17,3 +17,4 @@ header-y += traps.h
header-y += uctx.h
header-y += utrap.h
header-y += watchdog.h
header-y += swab.h
46 changes: 2 additions & 44 deletions arch/sparc/include/asm/byteorder.h
Original file line number Diff line number Diff line change
@@ -1,49 +1,7 @@
#ifndef _SPARC_BYTEORDER_H
#define _SPARC_BYTEORDER_H

#include <linux/types.h>
#include <asm/asi.h>

#define __BIG_ENDIAN

#if defined(__sparc__) && defined(__arch64__)
static inline __u16 __arch_swab16p(const __u16 *addr)
{
__u16 ret;

__asm__ __volatile__ ("lduha [%1] %2, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab16p __arch_swab16p

static inline __u32 __arch_swab32p(const __u32 *addr)
{
__u32 ret;

__asm__ __volatile__ ("lduwa [%1] %2, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab32p __arch_swab32p

static inline __u64 __arch_swab64p(const __u64 *addr)
{
__u64 ret;

__asm__ __volatile__ ("ldxa [%1] %2, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab64p __arch_swab64p

#else
#define __SWAB_64_THRU_32__
#endif /* defined(__sparc__) && defined(__arch64__) */

#include <linux/byteorder.h>
#include <asm/swab.h>
#include <linux/byteorder/big_endian.h>

#endif /* _SPARC_BYTEORDER_H */
45 changes: 45 additions & 0 deletions arch/sparc/include/asm/swab.h
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
#ifndef _SPARC_SWAB_H
#define _SPARC_SWAB_H

#include <linux/types.h>
#include <asm/asi.h>

#if defined(__sparc__) && defined(__arch64__)
static inline __u16 __arch_swab16p(const __u16 *addr)
{
__u16 ret;

__asm__ __volatile__ ("lduha [%1] %2, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab16p __arch_swab16p

static inline __u32 __arch_swab32p(const __u32 *addr)
{
__u32 ret;

__asm__ __volatile__ ("lduwa [%1] %2, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab32p __arch_swab32p

static inline __u64 __arch_swab64p(const __u64 *addr)
{
__u64 ret;

__asm__ __volatile__ ("ldxa [%1] %2, %0"
: "=r" (ret)
: "r" (addr), "i" (ASI_PL));
return ret;
}
#define __arch_swab64p __arch_swab64p

#else
#define __SWAB_64_THRU_32__
#endif /* defined(__sparc__) && defined(__arch64__) */

#endif /* _SPARC_SWAB_H */

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