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().

14 files changed, 37 insertions, 18 deletions

diff --git a/libc/string/sh64/memset.S b/libc/string/sh64/memset.S
index e1679230b..d87879717 100644
--- a/libc/string/sh64/memset.S
+++ b/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
diff --git a/libc/string/sh64/strcpy.S b/libc/string/sh64/strcpy.S
index faa071c50..f662cc859 100644
--- a/libc/string/sh64/strcpy.S
+++ b/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
diff --git a/libc/sysdeps/linux/sh/bits/kernel_stat.h b/libc/sysdeps/linux/sh/bits/kernel_stat.h
index cd818464d..c841b0cee 100644
--- a/libc/sysdeps/linux/sh/bits/kernel_stat.h
+++ b/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 */
diff --git a/libm/fp_private.h b/libm/fp_private.h
index 505400e33..0ddb616c4 100644
--- a/libm/fp_private.h
+++ b/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
diff --git a/libm/powerpc/s_ceil.c b/libm/powerpc/s_ceil.c
index fd073de7b..f6680eedf 100644
--- a/libm/powerpc/s_ceil.c
+++ b/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
diff --git a/libm/powerpc/s_floor.c b/libm/powerpc/s_floor.c
index 94677b4d2..0ddbb9b66 100644
--- a/libm/powerpc/s_floor.c
+++ b/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
diff --git a/libm/powerpc/s_frexp.c b/libm/powerpc/s_frexp.c
index 9909f2ce7..7c998f81a 100644
--- a/libm/powerpc/s_frexp.c
+++ b/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
diff --git a/libm/powerpc/s_ldexp.c b/libm/powerpc/s_ldexp.c
index ce9ec8b1b..7e52352ae 100644
--- a/libm/powerpc/s_ldexp.c
+++ b/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
diff --git a/libm/powerpc/s_logb.c b/libm/powerpc/s_logb.c
index 23c7270f9..3caecd95f 100644
--- a/libm/powerpc/s_logb.c
+++ b/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
diff --git a/libm/powerpc/s_modf.c b/libm/powerpc/s_modf.c
index f4344bda8..cb8338a90 100644
--- a/libm/powerpc/s_modf.c
+++ b/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
diff --git a/libm/powerpc/s_rint.c b/libm/powerpc/s_rint.c
index 72c4834d0..c229515c4 100644
--- a/libm/powerpc/s_rint.c
+++ b/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
diff --git a/libm/powerpc/s_round.c b/libm/powerpc/s_round.c
index 81f4d0fec..a0f72ebe3 100644
--- a/libm/powerpc/s_round.c
+++ b/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
diff --git a/libm/powerpc/s_trunc.c b/libm/powerpc/s_trunc.c
index 4b61355ea..7db7606b6 100644
--- a/libm/powerpc/s_trunc.c
+++ b/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
diff --git a/libm/powerpc/w_scalb.c b/libm/powerpc/w_scalb.c
index c93c74b68..fe23ece53 100644
--- a/libm/powerpc/w_scalb.c
+++ b/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