--- /dev/null
+++ Libc/Libc-583/sys/gettimeofday.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2003-2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ * Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved
+ *
+ * 	File:	libc/sys/gettimeofday.c
+ */
+
+#include <time.h>
+#include <tzfile.h>
+#include <sys/time.h>
+#include <errno.h>
+#include <unistd.h>
+
+#define	__APPLE_API_PRIVATE
+#include <machine/cpu_capabilities.h>
+#undef	__APPLE_API_PRIVATE
+
+extern int __gettimeofday(struct timeval *, struct timezone *);
+extern int __commpage_gettimeofday(struct timeval *);
+
+int gettimeofday (struct timeval *tp, void *vtzp)
+{
+	static int validtz = 0;
+	static struct timezone cached_tz = {0};
+	struct timezone *tzp = (struct timezone *)vtzp;
+	struct timeval atv;
+
+	if (tp == NULL) {
+	    if (tzp == NULL)
+		return	(0);
+	    tp = &atv;
+	}
+
+	if (__commpage_gettimeofday(tp)) {		/* first try commpage */
+		if (__gettimeofday(tp, NULL) < 0) {	/* if it fails, use syscall */
+			return (-1);
+		}
+	}
+
+	if (tzp) {
+	    if (validtz == 0)  {
+		struct tm *localtm = localtime ((time_t *)&tp->tv_sec);
+		cached_tz.tz_dsttime = localtm->tm_isdst;
+		cached_tz.tz_minuteswest =
+		    (-localtm->tm_gmtoff / SECSPERMIN) +
+		    (localtm->tm_isdst * MINSPERHOUR);
+		validtz = 1;
+	    }
+	    tzp->tz_dsttime = cached_tz.tz_dsttime;
+	    tzp->tz_minuteswest = cached_tz.tz_minuteswest;
+	}
+	return (0);
+}