Fixup byte order handling. Not all architectures define __BIG_ENDIAN__ so i.e.

on big endian mips the code is compiled as little-endian and the wrong half of
the 64-bit point value is examined to check for NaN, etc.  This bug also broke
fpclassify(), isfinite(), isnormal(), isinf(), finite(), and signbit().

libc/string/sh64/memset.S

@@ -9,7 +9,9 @@
 ! Copyright 2002 SuperH Ltd.
 !
 
-#ifdef __LITTLE_ENDIAN__
+#include <endian.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
 #define SHHI shlld
 #define SHLO shlrd
 #else

libc/string/sh64/strcpy.S

@@ -6,7 +6,9 @@
 !
 ! SH5 code Copyright 2002 SuperH Ltd.
 
-#ifdef __LITTLE_ENDIAN__
+#include <endian.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
 #define SHHI shlld
 #define SHLO shlrd
 #else
@@ -67,7 +69,7 @@ no_lddst:
 	add r5, r63, r4
 	addi r0, 8, r0
 shortstring:
-#ifndef __LITTLE_ENDIAN__
+#if __BYTE_ORDER != __LITTLE_ENDIAN
 	pta/l shortstring2,tr1
 	byterev r4,r4
 #endif

libc/sysdeps/linux/sh/bits/kernel_stat.h

@@ -30,10 +30,10 @@ struct kernel_stat {
 };
 
 struct kernel_stat64 {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
 	unsigned char   __pad0b[6];
 	unsigned short	st_dev;
-#elif defined(__LITTLE_ENDIAN__)
+#elif (__BYTE_ORDER == __LITTLE_ENDIAN)
 	unsigned short	st_dev;
 	unsigned char	__pad0b[6];
 #else
@@ -48,7 +48,7 @@ struct kernel_stat64 {
 	unsigned long	st_uid;
 	unsigned long	st_gid;
 
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
 	unsigned char	__pad3b[6];
 	unsigned short	st_rdev;
 #else /* Must be little */
@@ -60,7 +60,7 @@ struct kernel_stat64 {
 	long long	st_size;
 	unsigned long	st_blksize;
 
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
 	unsigned long	__pad4;		/* Future possible st_blocks hi bits */
 	unsigned long	st_blocks;	/* Number 512-byte blocks allocated. */
 #else /* Must be little */

libm/fp_private.h

@@ -70,10 +70,11 @@
 *******************************************************************************/
 
 #include <stdint.h>
+#include <endian.h>
 
 typedef struct                   /*      Hex representation of a double.      */
       {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
       uint32_t high;
       uint32_t low;
 #else

libm/powerpc/s_ceil.c

@@ -21,13 +21,15 @@
 *                                                                              *
 *******************************************************************************/
 
+#include <endian.h>
+
 static const double        twoTo52  = 4503599627370496.0;
 static const unsigned long signMask = 0x80000000ul;
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
 	unsigned long int hi;
 	unsigned long int lo;
 #else

libm/powerpc/s_floor.c

@@ -21,13 +21,15 @@
 *                                                                              *
 *******************************************************************************/
 
+#include <endian.h>
+
 static const double        twoTo52  = 4503599627370496.0;
 static const unsigned long signMask = 0x80000000ul;
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
 	unsigned long int hi;
 	unsigned long int lo;
 #else

libm/powerpc/s_frexp.c

@@ -21,13 +21,14 @@
 
 #include <limits.h>
 #include <math.h>
+#include <endian.h>
 
 static const double two54 =  1.80143985094819840000e+16; /* 0x43500000, 0x00000000 */
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else

libm/powerpc/s_ldexp.c

@@ -21,11 +21,12 @@
 
 #include <limits.h>
 #include <math.h>
+#include <endian.h>
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else

libm/powerpc/s_logb.c

@@ -32,10 +32,12 @@
 *     Standard 754.                                                            *
 *******************************************************************************/
 
+#include <endian.h>
+
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else

libm/powerpc/s_modf.c

@@ -45,13 +45,14 @@
 
 #include <limits.h>
 #include <math.h>
+#include <endian.h>
 
 #define      SET_INVALID      0x01000000UL
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else

libm/powerpc/s_rint.c

@@ -46,13 +46,14 @@
 
 #include <limits.h>
 #include <math.h>
+#include <endian.h>
 
 #define      SET_INVALID      0x01000000UL
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else

libm/powerpc/s_round.c

@@ -1,10 +1,11 @@
 #include <limits.h>
 #include <math.h>
+#include <endian.h>
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else

libm/powerpc/s_trunc.c

@@ -1,10 +1,11 @@
 #include <limits.h>
 #include <math.h>
+#include <endian.h>
 
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else

libm/powerpc/w_scalb.c

@@ -19,10 +19,12 @@
 **
 ***********************************************************************/
 
+#include <endian.h>
+
 typedef union
       {
       struct {
-#if defined(__BIG_ENDIAN__)
+#if (__BYTE_ORDER == __BIG_ENDIAN)
         unsigned long int hi;
         unsigned long int lo;
 #else