[PATCH 3/4] score: Use Newlib provided <machine/endian.h>

[Sebastian Huber]

---
 cpukit/include/rtems/endian.h | 85 +++++--------------------------------------
 cpukit/include/sys/endian.h   | 46 ++++++++++++++---------
 2 files changed, 37 insertions(+), 94 deletions(-)

diff --git a/cpukit/include/rtems/endian.h b/cpukit/include/rtems/endian.h
index e670477..802cc4b 100644
--- a/cpukit/include/rtems/endian.h
+++ b/cpukit/include/rtems/endian.h
@@ -8,90 +8,23 @@
 #ifndef _RTEMS_ENDIAN_H
 #define _RTEMS_ENDIAN_H
 
-#include <rtems/score/cpu.h>
+#include <stdint.h>
 
-/*
- * BSD-style endian declaration
- */
-#define BIG_ENDIAN	4321
-#define LITTLE_ENDIAN	1234
-
-#ifndef BYTE_ORDER
-#if CPU_BIG_ENDIAN
-# define BYTE_ORDER BIG_ENDIAN
-#elif CPU_LITTLE_ENDIAN
-# define BYTE_ORDER LITTLE_ENDIAN
-#else
-# error "Can't decide which end is which!"
-#endif
-#endif
-
-#if ( CPU_BIG_ENDIAN == TRUE )
-
-/*
- *  Very simply on big endian CPUs
- */
-
-static inline uint32_t ntohl( uint32_t _x )
-{
-  return _x;
-}
-
-static inline uint16_t ntohs( uint16_t _x )
-{
-  return _x;
-}
-
-static inline uint32_t htonl( uint32_t _x )
-{
-  return _x;
-}
-
-static inline uint16_t htons( uint16_t _x )
-{
-  return _x;
-}
+#include <machine/endian.h>
 
-#define NTOHS(x)
-#define HTONS(x)
-#define NTOHL(x)
-#define HTONL(x)
-
-#elif ( CPU_LITTLE_ENDIAN == TRUE )
-
-/*
- *  A little more complicated on little endian CPUs
- */
-
-static inline uint32_t ntohl( uint32_t _x )
-{
-  return CPU_swap_u32(_x);
-}
-
-static inline uint16_t ntohs( uint16_t _x )
-{
-  return CPU_swap_u16(_x);
-}
-
-static inline uint32_t htonl( uint32_t _x )
-{
-  return CPU_swap_u32(_x);
-}
-
-static inline uint16_t htons( uint16_t _x )
-{
-  return CPU_swap_u16(_x);
-}
+#ifndef _BYTEORDER_FUNC_DEFINED
+#define	_BYTEORDER_FUNC_DEFINED
+#define	htonl(x)	__htonl(x)
+#define	htons(x)	__htons(x)
+#define	ntohl(x)	__ntohl(x)
+#define	ntohs(x)	__ntohs(x)
+#endif
 
 #define NTOHS(x) (x) = ntohs(x)
 #define HTONS(x) (x) = htons(x)
 #define NTOHL(x) (x) = ntohl(x)
 #define HTONL(x) (x) = htonl(x)
 
-#else
-#error "Unknown endian-ness for this cpu"
-#endif
-
 static inline uint16_t rtems_uint16_from_little_endian( const uint8_t *data)
 {
   uint16_t value = 0;
diff --git a/cpukit/include/sys/endian.h b/cpukit/include/sys/endian.h
index b78d8c7..f7efc5d 100644
--- a/cpukit/include/sys/endian.h
+++ b/cpukit/include/sys/endian.h
@@ -30,31 +30,41 @@
 #define _SYS_ENDIAN_H_
 
 #include <sys/cdefs.h>
-#include <rtems/endian.h>
+#include <sys/_types.h>
+#include <machine/endian.h>
+
+#ifndef _UINT8_T_DECLARED
+typedef	__uint8_t	uint8_t;
+#define	_UINT8_T_DECLARED
+#endif
+ 
+#ifndef _UINT16_T_DECLARED
+typedef	__uint16_t	uint16_t;
+#define	_UINT16_T_DECLARED
+#endif
+ 
+#ifndef _UINT32_T_DECLARED
+typedef	__uint32_t	uint32_t;
+#define	_UINT32_T_DECLARED
+#endif
+ 
+#ifndef _UINT64_T_DECLARED
+typedef	__uint64_t	uint64_t;
+#define	_UINT64_T_DECLARED
+#endif
  
 /*
  * General byte order swapping functions.
  */
-#define	bswap16(x)	CPU_swap_u16(x)
-#define	bswap32(x)	CPU_swap_u32(x)
-static __inline uint64_t
-bswap64(uint64_t v)
-{
-#ifdef __GNUC__
-	return __builtin_bswap64(v);
-#else
-	return ((v >> 56) | ((v >> 40) & 0xff00) | ((v >> 24) & 0xff0000) |
-	    ((v >> 8) & 0xff000000) | ((v << 8) & ((uint64_t)0xff << 32)) |
-	    ((v << 24) & ((uint64_t)0xff << 40)) |
-	    ((v << 40) & ((uint64_t)0xff << 48)) | ((v << 56)));
-#endif
-}
+#define	bswap16(x)	__bswap16(x)
+#define	bswap32(x)	__bswap32(x)
+#define	bswap64(x)	__bswap64(x)
 
 /*
  * Host to big endian, host to little endian, big endian to host, and little
  * endian to host byte order functions as detailed in byteorder(9).
  */
-#if BYTE_ORDER == LITTLE_ENDIAN
+#if _BYTE_ORDER == _LITTLE_ENDIAN
 #define	htobe16(x)	bswap16((x))
 #define	htobe32(x)	bswap32((x))
 #define	htobe64(x)	bswap64((x))
@@ -68,7 +78,7 @@ bswap64(uint64_t v)
 #define	le16toh(x)	((uint16_t)(x))
 #define	le32toh(x)	((uint32_t)(x))
 #define	le64toh(x)	((uint64_t)(x))
-#else /* BYTE_ORDER != LITTLE_ENDIAN */
+#else /* _BYTE_ORDER != _LITTLE_ENDIAN */
 #define	htobe16(x)	((uint16_t)(x))
 #define	htobe32(x)	((uint32_t)(x))
 #define	htobe64(x)	((uint64_t)(x))
@@ -82,7 +92,7 @@ bswap64(uint64_t v)
 #define	le16toh(x)	bswap16((x))
 #define	le32toh(x)	bswap32((x))
 #define	le64toh(x)	bswap64((x))
-#endif /* BYTE_ORDER == LITTLE_ENDIAN */
+#endif /* _BYTE_ORDER == _LITTLE_ENDIAN */
 
 /* Alignment-agnostic encode/decode bytestream to/from little/big endian. */
 
-- 
1.8.4.5