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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>
This commit is contained in:
Harvey Harrison 2009-01-06 14:56:27 -08:00 committed by Linus Torvalds
parent 1af84a6253
commit f4d2b14501
3 changed files with 48 additions and 44 deletions
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1
arch/sparc/include/asm/Kbuild
View file

@ -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
arch/sparc/include/asm/byteorder.h
View file

@ -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
arch/sparc/include/asm/swab.h Normal file
View file

@ -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 */