diff options
| author | Joakim Tjernlund <Joakim.Tjernlund@transmode.se> | 2010-05-24 14:33:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 08:07:02 -0700 |
| commit | b3b77c8caef1750ebeea1054e39e358550ea9f55 (patch) | |
| tree | 9026ca0b3453226434a4ca8878832a4910b48664 /include/linux/byteorder | |
| parent | e47103b1af5df52fa69e18b14d3012472f78817d (diff) | |
| download | lwn-b3b77c8caef1750ebeea1054e39e358550ea9f55.tar.gz lwn-b3b77c8caef1750ebeea1054e39e358550ea9f55.zip | |
endian: #define __BYTE_ORDER
Linux does not define __BYTE_ORDER in its endian header files which makes
some header files bend backwards to get at the current endian. Lets
#define __BYTE_ORDER in big_endian.h/litte_endian.h to make it easier for
header files that are used in user space too.
In userspace the convention is that
1. _both_ __LITTLE_ENDIAN and __BIG_ENDIAN are defined,
2. you have to test for e.g. __BYTE_ORDER == __BIG_ENDIAN.
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/byteorder')
| -rw-r--r-- | include/linux/byteorder/big_endian.h | 3 | ||||
| -rw-r--r-- | include/linux/byteorder/little_endian.h | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/byteorder/big_endian.h b/include/linux/byteorder/big_endian.h index 3c80fd7e8b56..d53a67dff018 100644 --- a/include/linux/byteorder/big_endian.h +++ b/include/linux/byteorder/big_endian.h @@ -7,6 +7,9 @@ #ifndef __BIG_ENDIAN_BITFIELD #define __BIG_ENDIAN_BITFIELD #endif +#ifndef __BYTE_ORDER +#define __BYTE_ORDER __BIG_ENDIAN +#endif #include <linux/types.h> #include <linux/swab.h> diff --git a/include/linux/byteorder/little_endian.h b/include/linux/byteorder/little_endian.h index 83195fb82962..f7f8ad13adb6 100644 --- a/include/linux/byteorder/little_endian.h +++ b/include/linux/byteorder/little_endian.h @@ -7,6 +7,9 @@ #ifndef __LITTLE_ENDIAN_BITFIELD #define __LITTLE_ENDIAN_BITFIELD #endif +#ifndef __BYTE_ORDER +#define __BYTE_ORDER __LITTLE_ENDIAN +#endif #include <linux/types.h> #include <linux/swab.h> |