xnu-1699.32.7.tar.gz

[apple/xnu.git] / libkern / kmod / cplus_start.c

diff --git a/libkern/kmod/cplus_start.c b/libkern/kmod/cplus_start.c
index f67af6a3f891d2bd5b1f998590c13f3ebcb60585..1a2f3b9a025adba019db981f063e325b5881cc67 100644 (file)
--- a/libkern/kmod/cplus_start.c
+++ b/libkern/kmod/cplus_start.c
@@ -1,14 +1,19 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000,2008-2009 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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.
+ * 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.
+ * 
+ * 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
@@ -18,7 +23,7 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
     Subtle combination of files and libraries make up the C++ runtime system for kernel modules.  We are dependant on the KernelModule kmod.make and CreateKModInfo.perl scripts to be exactly instep with both this library module and the libkmod module as well.
@@ -37,23 +42,63 @@
     The linkline must look like this.
         *.o -lkmodc++ kmod_info.o -lkmod
  */
+
+/* The following preprocessor test must match exactly with the architectures
+ * that define the CONFIG_STATIC_CPPINIT config option.
+ */
+#if __i386__
+
 #include <mach/mach_types.h>
+#include <libkern/OSKextLib.h>
 
 asm(".constructors_used = 0");
 asm(".private_extern .constructors_used");
 
 // This global symbols will be defined by CreateInfo script's info.c file.
 extern kmod_start_func_t *_realmain;
+extern kmod_info_t KMOD_INFO_NAME;
 
 // Functions defined in libkern/c++/OSRuntime.cpp
 extern kern_return_t OSRuntimeInitializeCPP(kmod_info_t *ki, void *data);
+extern kern_return_t OSRuntimeFinalizeCPP(kmod_info_t *ki, void *data);
 
+/*********************************************************************
+*********************************************************************/
 __private_extern__ kern_return_t _start(kmod_info_t *ki, void *data)
 {
-    kern_return_t res = OSRuntimeInitializeCPP(ki, data);
+    kern_return_t result = OSRuntimeInitializeCPP(ki, data);
+
+    if ((result == KERN_SUCCESS) && _realmain) {
+        result = (*_realmain)(ki, data);
+
+       /* If _realmain failed, tear down C++.
+        */
+        if (result != KERN_SUCCESS) {
+            (void)OSRuntimeFinalizeCPP(ki, data);
+        }
+    }
+
+    return result;
+}
+
+/*********************************************************************
+*********************************************************************/
+__private_extern__ const char * OSKextGetCurrentIdentifier(void)
+{
+    return KMOD_INFO_NAME.name;
+}
 
-    if (!res && _realmain)
-        res = (*_realmain)(ki, data);
+/*********************************************************************
+*********************************************************************/
+__private_extern__ const char * OSKextGetCurrentVersionString(void)
+{
+    return KMOD_INFO_NAME.version;
+}
 
-    return res;
+/*********************************************************************
+*********************************************************************/
+__private_extern__ OSKextLoadTag OSKextGetCurrentLoadTag(void)
+{
+    return (OSKextLoadTag)KMOD_INFO_NAME.id;
 }
+#endif