+
+#elif defined(__FreeBSD__)
+
+#include <sys/endian.h>
+
+#define lttng_ust_bswap_16(x) bswap16(x)
+#define lttng_ust_bswap_32(x) bswap32(x)
+#define lttng_ust_bswap_64(x) bswap64(x)
+
+#define LTTNG_UST_BYTE_ORDER BYTE_ORDER
+#define LTTNG_UST_LITTLE_ENDIAN LITTLE_ENDIAN
+#define LTTNG_UST_BIG_ENDIAN BIG_ENDIAN
+#define FLOAT_WORD_ORDER BYTE_ORDER
+
+#else
+#error "Please add support for your OS."
+#endif