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Commit b3b77c8c authored by Joakim Tjernlund's avatar Joakim Tjernlund Committed by Linus Torvalds
Browse files

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: default avatarJoakim Tjernlund <Joakim.Tjernlund@transmode.se>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e47103b1

arch/alpha/math-emu/sfp-util.h

+0 −5
Original line number Diff line number Diff line
@@ -28,8 +28,3 @@ extern unsigned long __udiv_qrnnd (unsigned long *, unsigned long, 
#define UDIV_NEEDS_NORMALIZATION 1  



#define abort()			goto bad_insn
 


#ifndef __LITTLE_ENDIAN

#define __LITTLE_ENDIAN -1

#endif

#define __BYTE_ORDER __LITTLE_ENDIAN

arch/powerpc/include/asm/sfp-machine.h

+0 −6
Original line number Diff line number Diff line
@@ -353,12 +353,6 @@ 
#define abort()								\

	return 0



#ifdef __BIG_ENDIAN

#define __BYTE_ORDER __BIG_ENDIAN

#else

#define __BYTE_ORDER __LITTLE_ENDIAN

#endif



/* Exception flags. */

#define EFLAG_INVALID		(1 << (31 - 2))

#define EFLAG_OVERFLOW		(1 << (31 - 3))

arch/s390/include/asm/sfp-util.h

+0 −2
Original line number Diff line number Diff line
@@ -73,5 +73,3 @@ extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int, 
#define UDIV_NEEDS_NORMALIZATION 0



#define abort() return 0
 


#define __BYTE_ORDER __BIG_ENDIAN

arch/sh/math-emu/sfp-util.h

+0 −4
Original line number Diff line number Diff line
@@ -66,7 +66,3 @@ 
  } while (0)



#define abort()	return 0
 


#define __BYTE_ORDER __LITTLE_ENDIAN

arch/sparc/math-emu/sfp-util_32.h

+0 −6
Original line number Diff line number Diff line
@@ -107,9 +107,3 @@ 


#define abort()								\

	return 0
 


#ifdef __BIG_ENDIAN

#define __BYTE_ORDER __BIG_ENDIAN

#else

#define __BYTE_ORDER __LITTLE_ENDIAN

#endif