gcj.texi (Code Generation): Document -fbootstrap-classes.

gcc/java:
	* gcj.texi (Code Generation): Document -fbootstrap-classes.
	* decl.c (GCJ_BOOTSTRAP_LOADER_ADDITION): New macro.
	(parse_version): Use it.
	* lang.opt (-fbootstrap-classes): New option.
libjava:
	* external/w3c_dom/Makefile.in: Rebuilt.
	* external/w3c_dom/Makefile.am (libw3c_gcj_la_GCJFLAGS): Added
	-fbootstrap-classes.
	* external/sax/Makefile.in: Rebuilt.
	* external/sax/Makefile.am (libsax_gcj_la_GCJFLAGS): Added
	-fbootstrap-classes.
	* java/lang/Class.h (_Jv_CopyClassesToSystemLoader): Declare as
	friend.
	* java/lang/natVMClassLoader.cc (getSystemClassLoaderInternal):
	Call _Jv_CopyClassesToSystemLoader.
	* java/lang/natClassLoader.cc (system_class_list): New global.
	(_Jv_RegisterClassHookDefault): Handle bootstrap and system
	classes differently.
	(_Jv_CopyClassesToSystemLoader): New function.
	(SYSTEM_LOADER_INITIALIZED): New define.
	* include/jvm.h (GCJ_BOOTSTRAP_LOADER_ADDITION): New define.
	(_Jv_CheckABIVersion): Use it.
	(_Jv_ClassForBootstrapLoader): New function.
	* Makefile.in: Rebuilt.
	* Makefile.am (AM_GCJFLAGS): Added -fbootstrap-classes.

From-SVN: r99604

3 files changed, 45 insertions, 3 deletions

diff --git a/libjava/java/lang/Class.h b/libjava/java/lang/Class.h
index 8548560..28721d7 100644
--- a/libjava/java/lang/Class.h
+++ b/libjava/java/lang/Class.h
@@ -236,6 +236,8 @@ jclass _Jv_GetArrayClass (jclass klass, java::lang::ClassLoader *loader);
 
 jboolean _Jv_IsInterpretedClass (jclass);
 
+void _Jv_CopyClassesToSystemLoader (java::lang::ClassLoader *);
+
 #ifdef INTERPRETER
 void _Jv_InitField (jobject, jclass, int);
 
@@ -494,6 +496,8 @@ private:
 
   friend void *::_Jv_ResolvePoolEntry (jclass this_class, jint index);
 
+  friend void ::_Jv_CopyClassesToSystemLoader (java::lang::ClassLoader *);
+
   // Chain for class pool.  This also doubles as the ABI version
   // number.  It is only used for this purpose at class registration
   // time, and only for precompiled classes.
diff --git a/libjava/java/lang/natClassLoader.cc b/libjava/java/lang/natClassLoader.cc
index ed43b7a..2fa3f49 100644
--- a/libjava/java/lang/natClassLoader.cc
+++ b/libjava/java/lang/natClassLoader.cc
@@ -52,6 +52,15 @@ details.  */
 
 static jclass loaded_classes[HASH_LEN];
 
+// This records classes which will be registered with the system class
+// loader when it is initialized.
+static jclass system_class_list;
+
+// This is used as the value of system_class_list after we have
+// initialized the system class loader; it lets us know that we should
+// no longer pay attention to the system abi flag.
+#define SYSTEM_LOADER_INITIALIZED ((jclass) -1)
+
 // This is the root of a linked list of classes
 static jclass stack_head;
 
@@ -165,6 +174,22 @@ _Jv_RegisterClasses_Counted (const jclass * classes, size_t count)
 void
 _Jv_RegisterClassHookDefault (jclass klass)
 {
+  // This is bogus, but there doesn't seem to be a better place to do
+  // it.
+  if (! klass->engine)
+    klass->engine = &_Jv_soleCompiledEngine;
+
+  if (system_class_list != SYSTEM_LOADER_INITIALIZED)
+    {
+      unsigned long abi = (unsigned long) klass->next_or_version;
+      if (! _Jv_ClassForBootstrapLoader (abi))
+	{
+	  klass->next_or_version = system_class_list;
+	  system_class_list = klass;
+	  return;
+	}
+    }
+
   jint hash = HASH_UTF (klass->name);
 
   // If the class is already registered, don't re-register it.
@@ -193,9 +218,6 @@ _Jv_RegisterClassHookDefault (jclass klass)
 	}
     }
 
-  // FIXME: this is really bogus!
-  if (! klass->engine)
-    klass->engine = &_Jv_soleCompiledEngine;
   klass->next_or_version = loaded_classes[hash];
   loaded_classes[hash] = klass;
 }
@@ -216,6 +238,21 @@ _Jv_RegisterClass (jclass klass)
   _Jv_RegisterClasses (classes);
 }
 
+// This is used during initialization to register all compiled-in
+// classes that are not part of the core with the system class loader.
+void
+_Jv_CopyClassesToSystemLoader (java::lang::ClassLoader *loader)
+{
+  for (jclass klass = system_class_list;
+       klass;
+       klass = klass->next_or_version)
+    {
+      klass->loader = loader;
+      loader->loadedClasses->put(klass->name->toString(), klass);
+    }
+  system_class_list = SYSTEM_LOADER_INITIALIZED;
+}
+
 jclass
 _Jv_FindClass (_Jv_Utf8Const *name, java::lang::ClassLoader *loader)
 {
diff --git a/libjava/java/lang/natVMClassLoader.cc b/libjava/java/lang/natVMClassLoader.cc
index a94bf98..2e7b90d 100644
--- a/libjava/java/lang/natVMClassLoader.cc
+++ b/libjava/java/lang/natVMClassLoader.cc
@@ -99,6 +99,7 @@ java::lang::ClassLoader *
 java::lang::VMClassLoader::getSystemClassLoaderInternal()
 {
   _Jv_InitClass (&gnu::gcj::runtime::ExtensionClassLoader::class$);
+  _Jv_CopyClassesToSystemLoader (gnu::gcj::runtime::ExtensionClassLoader::system_instance);
   return gnu::gcj::runtime::ExtensionClassLoader::system_instance;
 }