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authorJoakim Tjernlund <Joakim.Tjernlund@transmode.se>2010-05-24 14:33:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 08:07:02 -0700
commitb3b77c8caef1750ebeea1054e39e358550ea9f55 (patch)
tree9026ca0b3453226434a4ca8878832a4910b48664
parente47103b1af5df52fa69e18b14d3012472f78817d (diff)
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>
-rw-r--r--arch/alpha/math-emu/sfp-util.h5
-rw-r--r--arch/powerpc/include/asm/sfp-machine.h6
-rw-r--r--arch/s390/include/asm/sfp-util.h2
-rw-r--r--arch/sh/math-emu/sfp-util.h4
-rw-r--r--arch/sparc/math-emu/sfp-util_32.h6
-rw-r--r--arch/sparc/math-emu/sfp-util_64.h6
-rw-r--r--arch/x86/boot/compressed/relocs.c4
-rw-r--r--include/linux/byteorder/big_endian.h3
-rw-r--r--include/linux/byteorder/little_endian.h3
9 files changed, 8 insertions, 31 deletions
diff --git a/arch/alpha/math-emu/sfp-util.h b/arch/alpha/math-emu/sfp-util.h
index f53707f7745..d4c6ae7fee4 100644
--- a/arch/alpha/math-emu/sfp-util.h
+++ b/arch/alpha/math-emu/sfp-util.h
@@ -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
diff --git a/arch/powerpc/include/asm/sfp-machine.h b/arch/powerpc/include/asm/sfp-machine.h
index 3a7a67a0d00..8b8fab91ad1 100644
--- a/arch/powerpc/include/asm/sfp-machine.h
+++ b/arch/powerpc/include/asm/sfp-machine.h
@@ -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))
diff --git a/arch/s390/include/asm/sfp-util.h b/arch/s390/include/asm/sfp-util.h
index 0addc6466d9..7d43fee17e3 100644
--- a/arch/s390/include/asm/sfp-util.h
+++ b/arch/s390/include/asm/sfp-util.h
@@ -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
diff --git a/arch/sh/math-emu/sfp-util.h b/arch/sh/math-emu/sfp-util.h
index 8ae1bd310ad..e8526021892 100644
--- a/arch/sh/math-emu/sfp-util.h
+++ b/arch/sh/math-emu/sfp-util.h
@@ -66,7 +66,3 @@
} while (0)
#define abort() return 0
-
-#define __BYTE_ORDER __LITTLE_ENDIAN
-
-
diff --git a/arch/sparc/math-emu/sfp-util_32.h b/arch/sparc/math-emu/sfp-util_32.h
index d1b2aff3c25..0ea35afbb91 100644
--- a/arch/sparc/math-emu/sfp-util_32.h
+++ b/arch/sparc/math-emu/sfp-util_32.h
@@ -107,9 +107,3 @@
#define abort() \
return 0
-
-#ifdef __BIG_ENDIAN
-#define __BYTE_ORDER __BIG_ENDIAN
-#else
-#define __BYTE_ORDER __LITTLE_ENDIAN
-#endif
diff --git a/arch/sparc/math-emu/sfp-util_64.h b/arch/sparc/math-emu/sfp-util_64.h
index 425d3cf01af..d17c9bc7218 100644
--- a/arch/sparc/math-emu/sfp-util_64.h
+++ b/arch/sparc/math-emu/sfp-util_64.h
@@ -112,9 +112,3 @@
#define abort() \
return 0
-
-#ifdef __BIG_ENDIAN
-#define __BYTE_ORDER __BIG_ENDIAN
-#else
-#define __BYTE_ORDER __LITTLE_ENDIAN
-#endif
diff --git a/arch/x86/boot/compressed/relocs.c b/arch/x86/boot/compressed/relocs.c
index 89bbf4e4d05..7b1aaa20c7b 100644
--- a/arch/x86/boot/compressed/relocs.c
+++ b/arch/x86/boot/compressed/relocs.c
@@ -195,11 +195,11 @@ static const char *sym_name(const char *sym_strtab, Elf32_Sym *sym)
-#if BYTE_ORDER == LITTLE_ENDIAN
+#if __BYTE_ORDER == __LITTLE_ENDIAN
#define le16_to_cpu(val) (val)
#define le32_to_cpu(val) (val)
#endif
-#if BYTE_ORDER == BIG_ENDIAN
+#if __BYTE_ORDER == __BIG_ENDIAN
#define le16_to_cpu(val) bswap_16(val)
#define le32_to_cpu(val) bswap_32(val)
#endif
diff --git a/include/linux/byteorder/big_endian.h b/include/linux/byteorder/big_endian.h
index 3c80fd7e8b5..d53a67dff01 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 83195fb8296..f7f8ad13adb 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>