Initial KLEE checkin.

 - Lots more tweaks, documentation, and web page content is needed,
   but this should compile & work on OS X & Linux.


git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@72205 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 49 insertions, 0 deletions

diff --git a/runtime/klee-libc/htonl.c b/runtime/klee-libc/htonl.c
new file mode 100644
index 00000000..cec2d0f5
--- /dev/null
+++ b/runtime/klee-libc/htonl.c
@@ -0,0 +1,49 @@
+//===-- htonl.c -----------------------------------------------------------===//
+//
+//                     The KLEE Symbolic Virtual Machine
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <stdint.h>
+
+#undef htons
+#undef htonl
+#undef ntohs
+#undef ntohl
+
+// Make sure we can recognize the endianness.
+#if (!defined(BYTE_ORDER) || !defined(BIG_ENDIAN) || !defined(LITTLE_ENDIAN))
+#error "Unknown platform endianness!"
+#endif
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+
+uint16_t htons(uint16_t v) {
+  return (v >> 8) | (v << 8);
+}
+uint32_t htonl(uint32_t v) {
+  return htons(v >> 16) | (htons((uint16_t) v) << 16);
+}
+
+#else
+
+uint16_t htons(uint16_t v) {
+  return v;
+}
+uint32_t htonl(uint32_t v) {
+  return v;
+}
+
+#endif
+
+uint16_t ntohs(uint32_t v) {
+  return htons(v);
+}
+uint32_t ntohl(uint32_t v) {
+  return htonl(v);
+}