--- xnu/xnu-123.5/libsa/bootstrap.cpp
+++ xnu/xnu-792.6.76/libsa/bootstrap.cpp
@@ -23,13 +23,12 @@
 #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 +49,6 @@
  */
 extern int kernelLinkerPresent;
 
-extern IOLock * kld_lock;
-};
-
 
 class KLDBootstrap {
 public:
@@ -69,8 +65,7 @@
  */
 KLDBootstrap::KLDBootstrap() {
 
-    kld_lock = IOLockAlloc();
-    IOLockLock(kld_lock);
+    malloc_init();
 
     kmod_load_function = &load_kernel_extension;
 
@@ -79,8 +74,6 @@
     remove_startup_extension_function = &removeStartupExtension;
 
     kernelLinkerPresent = 1;
-
-    IOLockUnlock(kld_lock);
 }
 
 /* The destructor frees all wired memory regions held
@@ -88,16 +81,15 @@
  */
 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);
-
 }