1 files changed, 60 insertions, 0 deletions
diff --git a/c/src/libnetworking/machine/endian.h b/c/src/libnetworking/machine/endian.h
new file mode 100644
index 0000000000..cd0d6f551c
--- /dev/null
+++ b/c/src/libnetworking/machine/endian.h
@@ -0,0 +1,60 @@
+#ifndef _MACHINE_ENDIAN_H_
+#define _MACHINE_ENDIAN_H_
+
+#include <rtems/score/cpu.h>
+
+/*
+ * BSD-style endian declaration
+ */
+#define BIG_ENDIAN	4321
+#define LITTLE_ENDIAN	1234
+
+#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
+
+#if ( CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES == FALSE )
+
+#if ( CPU_BIG_ENDIAN == TRUE )
+
+/*
+ *  Very simply on big endian CPUs
+ */
+
+#define       ntohl(_x)        (_x)
+#define       ntohs(_x)        (_x)
+#define       htonl(_x)        (_x)
+#define       htons(_x)        (_x)
+
+#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
+ */
+
+#define       ntohl(_x)        ((long)  CPU_swap_u32((unsigned32)_x))
+#define       ntohs(_x)        ((short) CPU_swap_u16((unsigned16)_x))
+#define       htonl(_x)        ((long)  CPU_swap_u32((unsigned32)_x))
+#define       htons(_x)        ((short) CPU_swap_u16((unsigned16)_x))
+
+#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
+
+#endif  /* CPU_HAS_OWN_HOST_TO_NETWORK_ROUTINES */
+
+#endif /* _MACHINE_ENDIAN_H_ */