Add function versions of ntohl and friends

2 files changed, 68 insertions, 1 deletions

diff --git a/libc/inet/Makefile b/libc/inet/Makefile
index ef3d6cf69..5ca42ddf2 100644
--- a/libc/inet/Makefile
+++ b/libc/inet/Makefile
@@ -52,7 +52,7 @@ MOBJ3= accept.o bind.o connect.o getpeername.o getsockname.o getsockopt.o \
 
 CSRC =getservice.c getproto.c hostid.c getnetent.c getnetbynm.c getnetbyad.c \
       inet_net.c ntop.c herror.c if_nametoindex.c gai_strerror.c getaddrinfo.c \
-      in6_addr.c ether_addr.c
+      in6_addr.c ether_addr.c ntohl.c
 
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 
diff --git a/libc/inet/ntohl.c b/libc/inet/ntohl.c
new file mode 100644
index 000000000..4fbdf7096
--- /dev/null
+++ b/libc/inet/ntohl.c
@@ -0,0 +1,67 @@
+/* vi: set sw=4 ts=4:
+ * Functions to convert between host and network byte order.
+ *
+ * Copyright (C) 2003 by Erik Andersen <andersen@uclibc.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdint.h>
+#include <endian.h>
+#include <byteswap.h>
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+extern uint32_t ntohl (uint32_t x)
+{
+	return x;
+}
+
+extern uint16_t ntohs (uint16_t x)
+{
+	return x;
+}
+
+extern uint32_t htonl (uint32_t x)
+{
+	return x;
+}
+
+extern uint16_t htons (uint16_t x)
+{
+	return x;
+}
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+extern uint32_t ntohl (uint32_t x)
+{
+	return __bswap_32(x);
+}
+
+extern uint16_t ntohs (uint16_t x)
+{
+	return __bswap_16(x);
+}
+
+extern uint32_t htonl (uint32_t x)
+{
+	return __bswap_32(x);
+}
+
+extern uint16_t htons (uint16_t x)
+{
+	return __bswap_16(x);
+}
+#else
+#error "You seem to have an unsupported byteorder"
+#endif