--- xnu/xnu-124.13/libsa/bootstrap.cpp
+++ xnu/xnu-792.22.5/libsa/bootstrap.cpp
@@ -1,35 +1,40 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * 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. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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 OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 #include <IOKit/IOLib.h>
 #include <mach/kmod.h>
 #include <libkern/c++/OSDictionary.h>
 
-#include <libsa/kmod.h>
+#include <libsa/kext.h>
 #include <libsa/catalogue.h>
-extern "C" {
 #include <libsa/malloc.h>
-};
 
-extern "C" {
+#include "kld_patch.h"
+
 /*****
  * This function is used by IOCatalogue to load a kernel
  * extension. libsa initially sets it to be a function
@@ -50,9 +55,6 @@
  */
 extern int kernelLinkerPresent;
 
-extern IOLock * kld_lock;
-};
-
 
 class KLDBootstrap {
 public:
@@ -69,8 +71,7 @@
  */
 KLDBootstrap::KLDBootstrap() {
 
-    kld_lock = IOLockAlloc();
-    IOLockLock(kld_lock);
+    malloc_init();
 
     kmod_load_function = &load_kernel_extension;
 
@@ -79,8 +80,6 @@
     remove_startup_extension_function = &removeStartupExtension;
 
     kernelLinkerPresent = 1;
-
-    IOLockUnlock(kld_lock);
 }
 
 /* The destructor frees all wired memory regions held
@@ -88,16 +87,15 @@
  */
 KLDBootstrap::~KLDBootstrap() {
 
-    OSDictionary * startupExtensions;
+    kld_file_cleanup_all_resources();
 
-    IOLockLock(kld_lock);
+   /* Dump all device-tree entries for boot drivers, and all
+    * info on startup extensions. The IOCatalogue will now
+    * get personalities from kextd.
+    */
+    clearStartupExtensionsAndLoaderInfo();
 
+   /* Free all temporary malloc memory.
+    */
     malloc_reset();
-
-    startupExtensions = getStartupExtensions();
-    if (startupExtensions) startupExtensions->release();
-
-    IOLockUnlock(kld_lock);
-    IOLockFree(kld_lock);
-
 }