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Commit a07f7672 authored by Matt Fleming's avatar Matt Fleming Committed by H. Peter Anvin
Browse files

tools/include: Add byteshift headers for endian access 



There are various hostprogs in the kernel that are rolling their own
implementations of {get,put}_unaligned_le*(). Copy the byteshift
headers from include/linux/unaligned so that they can all use a single
implementation.

This requires changing some of the data types to the userspace
exported ones (u32 -> __u32, etc).

Signed-off-by: default avatarMatt Fleming <matt.fleming@intel.com>
Link: http://lkml.kernel.org/r/1330436245-24875-2-git-send-email-matt@console-pimps.org


Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent 6b21d18e

tools/include/tools/be_byteshift.h

0 → 100644
+70 −0
Original line number Diff line number Diff line 
#ifndef _TOOLS_BE_BYTESHIFT_H

#define _TOOLS_BE_BYTESHIFT_H



#include <linux/types.h>



static inline __u16 __get_unaligned_be16(const __u8 *p)

{

	return p[0] << 8 | p[1];

}



static inline __u32 __get_unaligned_be32(const __u8 *p)

{

	return p[0] << 24 | p[1] << 16 | p[2] << 8 | p[3];

}



static inline __u64 __get_unaligned_be64(const __u8 *p)

{

	return (__u64)__get_unaligned_be32(p) << 32 |

	       __get_unaligned_be32(p + 4);

}



static inline void __put_unaligned_be16(__u16 val, __u8 *p)

{

	*p++ = val >> 8;

	*p++ = val;

}



static inline void __put_unaligned_be32(__u32 val, __u8 *p)

{

	__put_unaligned_be16(val >> 16, p);

	__put_unaligned_be16(val, p + 2);

}



static inline void __put_unaligned_be64(__u64 val, __u8 *p)

{

	__put_unaligned_be32(val >> 32, p);

	__put_unaligned_be32(val, p + 4);

}



static inline __u16 get_unaligned_be16(const void *p)

{

	return __get_unaligned_be16((const __u8 *)p);

}



static inline __u32 get_unaligned_be32(const void *p)

{

	return __get_unaligned_be32((const __u8 *)p);

}



static inline __u64 get_unaligned_be64(const void *p)

{

	return __get_unaligned_be64((const __u8 *)p);

}



static inline void put_unaligned_be16(__u16 val, void *p)

{

	__put_unaligned_be16(val, p);

}



static inline void put_unaligned_be32(__u32 val, void *p)

{

	__put_unaligned_be32(val, p);

}



static inline void put_unaligned_be64(__u64 val, void *p)

{

	__put_unaligned_be64(val, p);

}



#endif /* _TOOLS_BE_BYTESHIFT_H */

tools/include/tools/le_byteshift.h

0 → 100644
+70 −0
Original line number Diff line number Diff line 
#ifndef _TOOLS_LE_BYTESHIFT_H

#define _TOOLS_LE_BYTESHIFT_H



#include <linux/types.h>



static inline __u16 __get_unaligned_le16(const __u8 *p)

{

	return p[0] | p[1] << 8;

}



static inline __u32 __get_unaligned_le32(const __u8 *p)

{

	return p[0] | p[1] << 8 | p[2] << 16 | p[3] << 24;

}



static inline __u64 __get_unaligned_le64(const __u8 *p)

{

	return (__u64)__get_unaligned_le32(p + 4) << 32 |

	       __get_unaligned_le32(p);

}



static inline void __put_unaligned_le16(__u16 val, __u8 *p)

{

	*p++ = val;

	*p++ = val >> 8;

}



static inline void __put_unaligned_le32(__u32 val, __u8 *p)

{

	__put_unaligned_le16(val >> 16, p + 2);

	__put_unaligned_le16(val, p);

}



static inline void __put_unaligned_le64(__u64 val, __u8 *p)

{

	__put_unaligned_le32(val >> 32, p + 4);

	__put_unaligned_le32(val, p);

}



static inline __u16 get_unaligned_le16(const void *p)

{

	return __get_unaligned_le16((const __u8 *)p);

}



static inline __u32 get_unaligned_le32(const void *p)

{

	return __get_unaligned_le32((const __u8 *)p);

}



static inline __u64 get_unaligned_le64(const void *p)

{

	return __get_unaligned_le64((const __u8 *)p);

}



static inline void put_unaligned_le16(__u16 val, void *p)

{

	__put_unaligned_le16(val, p);

}



static inline void put_unaligned_le32(__u32 val, void *p)

{

	__put_unaligned_le32(val, p);

}



static inline void put_unaligned_le64(__u64 val, void *p)

{

	__put_unaligned_le64(val, p);

}



#endif /* _TOOLS_LE_BYTESHIFT_H */