diff --git a/include/metalsvm/stdlib.h b/include/metalsvm/stdlib.h
index 883818b6..6a74fac6 100644
--- a/include/metalsvm/stdlib.h
+++ b/include/metalsvm/stdlib.h
@@ -43,6 +43,7 @@ void* mem_allocation(size_t sz, uint32_t flags);
 void kfree(void*, size_t);
 
 long strtol(const char* str, char** endptr, int base);
+unsigned long strtoul(const char* nptr, char** endptr, int base);
 
 static inline int atoi(const char *str)
 {
diff --git a/libkern/Makefile b/libkern/Makefile
index 6ed0f196..e21e0c9b 100644
--- a/libkern/Makefile
+++ b/libkern/Makefile
@@ -1,4 +1,4 @@
-C_source := string.c stdio.c printf.c sprintf.c ucmpdi2.c lshrdi3.c qdivrem.c udivdi3.c divdi3.c moddi3.c umoddi3.c strtol.c
+C_source := string.c stdio.c printf.c sprintf.c ucmpdi2.c lshrdi3.c qdivrem.c udivdi3.c divdi3.c moddi3.c umoddi3.c strtol.c strtoul.c
 MODULE := libkern
 
 include $(TOPDIR)/Makefile.inc
diff --git a/libkern/strtoul.c b/libkern/strtoul.c
new file mode 100644
index 00000000..d54ce48e
--- /dev/null
+++ b/libkern/strtoul.c
@@ -0,0 +1,112 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * From: @(#)strtoul.c	8.1 (Berkeley) 6/4/93
+ */
+
+/* 
+ * The code has been taken from FreeBSD (sys/libkern/strtoul.c) and is therefore 
+ * BSD-licensed. Unnecessary functions have been removed and all typedefs required 
+ * have been added.
+ */
+
+/* MetalSVM prelude */
+#include <metalsvm/stddef.h>
+#include <metalsvm/ctype.h>
+#include <asm/limits.h>
+
+/*
+ * Convert a string to an unsigned long integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+unsigned long
+strtoul(nptr, endptr, base)
+	const char *nptr;
+	char **endptr;
+	int base;
+{
+	const char *s = nptr;
+	unsigned long acc;
+	unsigned char c;
+	unsigned long cutoff;
+	int neg = 0, any, cutlim;
+
+	/*
+	 * See strtol for comments as to the logic used.
+	 */
+	do {
+		c = *s++;
+	} while (isspace(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+')
+		c = *s++;
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+	cutoff = (unsigned long)ULONG_MAX / (unsigned long)base;
+	cutlim = (unsigned long)ULONG_MAX % (unsigned long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (!isascii(c))
+			break;
+		if (isdigit(c))
+			c -= '0';
+		else if (isalpha(c))
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		else
+			break;
+		if (c >= base)
+			break;
+		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
+			any = -1;
+		else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = ULONG_MAX;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*((const char **)endptr) = any ? s - 1 : nptr;
+	return (acc);
+}
+