Skip to content

Commit

Permalink
powerpc: Use the new byteorder headers
Browse files Browse the repository at this point in the history
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
  • Loading branch information
Harvey Harrison authored and Paul Mackerras committed Nov 5, 2008
1 parent 5b4d218 commit 1c1b777
Showing 1 changed file with 21 additions and 17 deletions.
38 changes: 21 additions & 17 deletions arch/powerpc/include/asm/byteorder.h
Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,8 @@
#include <asm/types.h>
#include <linux/compiler.h>

#define __BIG_ENDIAN

#ifdef __GNUC__
#ifdef __KERNEL__

Expand All @@ -21,26 +23,40 @@ static __inline__ __u16 ld_le16(const volatile __u16 *addr)
__asm__ __volatile__ ("lhbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
return val;
}
#define __arch_swab16p ld_le16

static __inline__ void st_le16(volatile __u16 *addr, const __u16 val)
{
__asm__ __volatile__ ("sthbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
}

static inline void __arch_swab16s(__u16 *addr)
{
st_le16(addr, *addr);
}
#define __arch_swab16s __arch_swab16s

static __inline__ __u32 ld_le32(const volatile __u32 *addr)
{
__u32 val;

__asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (val) : "r" (addr), "m" (*addr));
return val;
}
#define __arch_swab32p ld_le32

static __inline__ void st_le32(volatile __u32 *addr, const __u32 val)
{
__asm__ __volatile__ ("stwbrx %1,0,%2" : "=m" (*addr) : "r" (val), "r" (addr));
}

static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 value)
static inline void __arch_swab32s(__u32 *addr)
{
st_le32(addr, *addr);
}
#define __arch_swab32s __arch_swab32s

static inline __attribute_const__ __u16 __arch_swab16(__u16 value)
{
__u16 result;

Expand All @@ -49,8 +65,9 @@ static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 value)
: "r" (value), "0" (value >> 8));
return result;
}
#define __arch_swab16 __arch_swab16

static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 value)
static inline __attribute_const__ __u32 __arch_swab32(__u32 value)
{
__u32 result;

Expand All @@ -61,29 +78,16 @@ static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 value)
: "r" (value), "0" (value >> 24));
return result;
}

#define __arch__swab16(x) ___arch__swab16(x)
#define __arch__swab32(x) ___arch__swab32(x)

/* The same, but returns converted value from the location pointer by addr. */
#define __arch__swab16p(addr) ld_le16(addr)
#define __arch__swab32p(addr) ld_le32(addr)

/* The same, but do the conversion in situ, ie. put the value back to addr. */
#define __arch__swab16s(addr) st_le16(addr,*addr)
#define __arch__swab32s(addr) st_le32(addr,*addr)
#define __arch_swab32 __arch_swab32

#endif /* __KERNEL__ */

#ifndef __STRICT_ANSI__
#define __BYTEORDER_HAS_U64__
#ifndef __powerpc64__
#define __SWAB_64_THRU_32__
#endif /* __powerpc64__ */
#endif /* __STRICT_ANSI__ */

#endif /* __GNUC__ */

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

#endif /* _ASM_POWERPC_BYTEORDER_H */

0 comments on commit 1c1b777

Please sign in to comment.