xnu-7195.101.1.tar.gz

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

diff --git a/libkern/kmod/cplus_stop.c b/libkern/kmod/cplus_stop.c
index b4ce5236a338f02adb886df697aff78a81a7392b..9f23e486c9dd7ab6d2af7494d9c93e89dc9b6bdd 100644 (file)
--- a/libkern/kmod/cplus_stop.c
+++ b/libkern/kmod/cplus_stop.c
@@ -1,8 +1,8 @@
 /*
- * Copyright (c) 2000,2008-2009 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000,2008-2012 Apple Inc. All rights reserved.
  *
  * @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
@@ -11,10 +11,10 @@
  * 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
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -22,50 +22,23 @@
  * 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_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.
-
-    If you do any maintenance on any of the following files make sure great care is taken to keep them in Sync.
-    KernelModule.bproj/kmod.make
-    KernelModule.bproj/CreateKModInfo.perl
-    KernelModule.bproj/kmodc++/pure.c
-    KernelModule.bproj/kmodc++/cplus_start.c
-    KernelModule.bproj/kmodc++/cplus_start.c
-    KernelModule.bproj/kmodc/c_start.c
-    KernelModule.bproj/kmodc/c_stop.c
-
-    The trick is that the linkline links all of the developers modules.  If any static constructors are used .constructors_used will be left as an undefined symbol.  This symbol is exported by the cplus_start.c routine which automatically brings in the appropriate C++ _start routine.  However the actual _start symbol is only required by the kmod_info structure that is created and initialized by the CreateKModInfo.perl script.  If no C++ was used the _start will be an undefined symbol that is finally satisfied by the c_start module in the kmod library.
-
-    The linkline must look like this.
-        *.o -lkmodc++ kmod_info.o -lkmod
+ *   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.
+ *
+ *   If you do any maintenance on any of the following files make sure great care is taken to keep them in Sync.
+ *   KernelModule.bproj/kmod.make
+ *   KernelModule.bproj/CreateKModInfo.perl
+ *   KernelModule.bproj/kmodc++/pure.c
+ *   KernelModule.bproj/kmodc++/cplus_start.c
+ *   KernelModule.bproj/kmodc++/cplus_start.c
+ *   KernelModule.bproj/kmodc/c_start.c
+ *   KernelModule.bproj/kmodc/c_stop.c
+ *
+ *   The trick is that the linkline links all of the developers modules.  If any static constructors are used .constructors_used will be left as an undefined symbol.  This symbol is exported by the cplus_start.c routine which automatically brings in the appropriate C++ _start routine.  However the actual _start symbol is only required by the kmod_info structure that is created and initialized by the CreateKModInfo.perl script.  If no C++ was used the _start will be an undefined symbol that is finally satisfied by the c_start module in the kmod library.
+ *
+ *   The linkline must look like this.
+ *.o -lkmodc++ kmod_info.o -lkmod
  */
-#if __i386__ || __ppc__
-#include <mach/mach_types.h>
-
-asm(".destructors_used = 0");
-asm(".private_extern .destructors_used");
-
-// Functions defined in libkern/c++/OSRuntime.cpp
-extern kern_return_t OSRuntimeFinalizeCPP(kmod_info_t *ki, void *data);
-
-// This global symbols will be defined by CreateInfo script's info.c file.
-extern kmod_stop_func_t *_antimain;
-
-__private_extern__ kern_return_t _stop(kmod_info_t *ki, void *data)
-{
-    kern_return_t result = KERN_SUCCESS;
-
-    if (_antimain) {
-        result = (*_antimain)(ki, data);
-    }
-    
-    if (result == KERN_SUCCESS) {
-        result = OSRuntimeFinalizeCPP(ki, data);
-    }
-    
-    return result;
-}
-#endif