--- xnu/xnu-1228/libkern/c++/OSSerialize.cpp
+++ xnu/xnu-2782.20.48/libkern/c++/OSSerialize.cpp
@@ -36,6 +36,7 @@
 #include <libkern/c++/OSContainers.h>
 #include <libkern/c++/OSLib.h>
 #include <libkern/c++/OSDictionary.h>
+#include <libkern/OSSerializeBinary.h>
 
 #define super OSObject
 
@@ -65,8 +66,17 @@
 
 void OSSerialize::clearText()
 {
-	bzero((void *)data, capacity);
-	length = 1;
+	if (binary)
+	{
+		length = sizeof(kOSSerializeBinarySignature);
+		bzero(&data[length], capacity - length);
+		endCollection = true;
+	}
+    else
+    {
+		bzero((void *)data, capacity);
+		length = 1;
+    }
 	tag = 0;
 	tags->flushCollection();
 }
@@ -76,9 +86,12 @@
 	char temp[16];
 	OSString *tagString;
 
+	if (binary) return (binarySerialize(o));
+
 	// look it up
 	tagString = (OSString *)tags->getObject((const OSSymbol *) o);
 
+// xx-review: no error checking here for addString calls!
 	// does it exist?
 	if (tagString) {
 		addString("<reference IDREF=\"");
@@ -100,6 +113,11 @@
 
 bool OSSerialize::addXMLStartTag(const OSMetaClassBase *o, const char *tagString)
 {
+	if (binary)
+    {
+		printf("class %s: xml serialize\n", o->getMetaClass()->getClassName());
+		return (false);
+	}
 
 	if (!addChar('<')) return false;
 	if (!addString(tagString)) return false;
@@ -123,6 +141,12 @@
 
 bool OSSerialize::addChar(const char c)
 {
+	if (binary)
+    {
+		printf("xml serialize\n");
+		return (false);
+	}
+
 	// add char, possibly extending our capacity
 	if (length >= capacity && length >=ensureCapacity(capacity+capacityIncrement))
 		return false;