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blackfin: 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 14:56:30 -08:00 committed by Linus Torvalds
parent af8e24e96f
commit cfcac2f7dd
3 changed files with 50 additions and 42 deletions
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1
arch/blackfin/include/asm/Kbuild
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@ -1,3 +1,4 @@
include include/asm-generic/Kbuild.asm
unifdef-y += fixed_code.h
unifdef-y += swab.h

43
arch/blackfin/include/asm/byteorder.h
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@ -1,48 +1,7 @@
#ifndef _BLACKFIN_BYTEORDER_H
#define _BLACKFIN_BYTEORDER_H
#include <asm/types.h>
#include <linux/compiler.h>
#ifdef __GNUC__
static __inline__ __attribute_const__ __u32 ___arch__swahb32(__u32 xx)
{
__u32 tmp;
__asm__("%1 = %0 >> 8 (V);\n\t"
"%0 = %0 << 8 (V);\n\t"
"%0 = %0 | %1;\n\t"
: "+d"(xx), "=&d"(tmp));
return xx;
}
static __inline__ __attribute_const__ __u32 ___arch__swahw32(__u32 xx)
{
__u32 rv;
__asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx));
return rv;
}
#define __arch__swahb32(x) ___arch__swahb32(x)
#define __arch__swahw32(x) ___arch__swahw32(x)
#define __arch__swab32(x) ___arch__swahb32(___arch__swahw32(x))
static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 xx)
{
__u32 xw = xx;
__asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw));
return (__u16)xw;
}
#define __arch__swab16(x) ___arch__swab16(x)
#endif
#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
# define __BYTEORDER_HAS_U64__
# define __SWAB_64_THRU_32__
#endif
#include <asm/swab.h>
#include <linux/byteorder/little_endian.h>
#endif /* _BLACKFIN_BYTEORDER_H */

48
arch/blackfin/include/asm/swab.h Normal file
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@ -0,0 +1,48 @@
#ifndef _BLACKFIN_SWAB_H
#define _BLACKFIN_SWAB_H
#include <asm/types.h>
#include <linux/compiler.h>
#if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
# define __SWAB_64_THRU_32__
#endif
#ifdef __GNUC__
static __inline__ __attribute_const__ __u32 __arch_swahb32(__u32 xx)
{
__u32 tmp;
__asm__("%1 = %0 >> 8 (V);\n\t"
"%0 = %0 << 8 (V);\n\t"
"%0 = %0 | %1;\n\t"
: "+d"(xx), "=&d"(tmp));
return xx;
}
#define __arch_swahb32 __arch_swahb32
static __inline__ __attribute_const__ __u32 __arch_swahw32(__u32 xx)
{
__u32 rv;
__asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx));
return rv;
}
#define __arch_swahw32 __arch_swahw32
static __inline__ __attribute_const__ __u32 __arch_swab32(__u32 xx)
{
return __arch_swahb32(__arch_swahw32(xx));
}
#define __arch_swab32 __arch_swab32
static __inline__ __attribute_const__ __u16 __arch_swab16(__u16 xx)
{
__u32 xw = xx;
__asm__("%0 <<= 8;\n %0.L = %0.L + %0.H (NS);\n": "+d"(xw));
return (__u16)xw;
}
#define __arch_swab16 __arch_swab16
#endif /* __GNUC__ */
#endif /* _BLACKFIN_SWAB_H */