Makefile.am: New friends for java/lang/Thread.h.

* Makefile.am: New friends for java/lang/Thread.h.
	* prims.cc (runFirst): Removed.
	(JvRunMain): Merged into _Jv_RunMain. Now just calls that.
	(_Jv_RunMain): Now takes either a klass or class name parameter.
	Create a gnu.gcj.runtime.FirstThread and attach the native thread
	to that, then run it using _Jv_ThreadRun. Remove special handling of
	jar files, instead pass is_jar parameter through to FirstThread.
	* gcj/javaprims.h: Add prototypes for _Jv_ThreadRun and new variant
	of _Jv_AttachCurrentThread.
	* gnu/gcj/runtime/FirstThread.java (FirstThread): Now extends Thread.
	(run): New method. Take care of looking up main class manifest
	attribute and calling forName if neccessary. Then call call_main.
	(call_main): New native method.
	* gnu/gcj/runtime/natFirstThread.cc (call_main): New function, code
	relocated from prims.cc. Look up and call main method.
	* java/lang/Thread.java (run_): Removed.
	* java/lang/natThread.cc (run_): Renamed to...
	(_Jv_ThreadRun): this. JVMPI notification code moved to ...
	(_Jv_NotifyThreadStart): here. New function.
	(countStackFrames, destroy, resume, suspend, stop): Throw
	UnsupportedOperationExceptions rather than JvFail'ing.
	(_Jv_AttachCurrentThread): New variant takes a Thread argument.
	Existing version wraps new variant.

From-SVN: r45182

libjava/gnu/gcj/runtime/FirstThread.java

@@ -17,11 +17,44 @@ import java.util.jar.*;
  * @date August 24, 1998 
  */
 
-// This is entirely internal to our implementation.
-
-final class FirstThread
+final class FirstThread extends Thread
 {
-  public static String getMain (String name)
+  public FirstThread (Class k, String[] args)
+  {
+    super (null, null, "main");
+    klass = k;
+    this.args = args;
+  }
+
+  public FirstThread (String class_name, String[] args, boolean is_jar)
+  {
+    super (null, null, "main");
+    klass_name = class_name;
+    this.args = args;
+    this.is_jar = is_jar;
+  }
+  
+  public void run()
+  {
+    if (is_jar)
+      klass_name = getMain(klass_name);
+    
+    if (klass == null)
+      {
+        try
+	  {
+	    klass = Class.forName(klass_name);
+	  }
+	catch (ClassNotFoundException x)
+	  {
+	    throw new NoClassDefFoundError(klass_name);
+	  }
+      }
+    
+    call_main();
+  }
+
+  private String getMain (String name)
   {
     String mainName = null;
     try {
@@ -37,15 +70,21 @@ final class FirstThread
     }
 
     if (mainName == null)
-      System.err.println ("Failed to load Main-Class manifest attribute from\n"
-			  + name);
+      {
+	System.err.println ("Failed to load Main-Class manifest attribute from\n"
+			    + name);
+	System.exit(1);
+      }
     return mainName;
   }
 
+  private native void call_main ();
+
   // Private data.
   private Class klass;
   private String klass_name;
   private Object args;
+  private boolean is_jar;
 
   // If the user links statically then we need to ensure that these
   // classes are linked in.  Otherwise bootstrapping fails.  These

libjava/gnu/gcj/runtime/natFirstThread.cc

@@ -0,0 +1,47 @@
+// natFirstThread.cc - Implementation of FirstThread native methods.
+
+/* Copyright (C) 1998, 1999, 2000, 2001  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <gcj/cni.h>
+#include <jvm.h>
+
+#include <gnu/gcj/runtime/FirstThread.h>
+
+typedef void main_func (jobject);
+
+void
+gnu::gcj::runtime::FirstThread::call_main (void)
+{
+  Utf8Const* main_signature = _Jv_makeUtf8Const ("([Ljava.lang.String;)V", 22);
+  Utf8Const* main_name = _Jv_makeUtf8Const ("main", 4);
+
+  _Jv_Method *meth = _Jv_GetMethodLocal (klass, main_name, main_signature);
+
+  // Some checks from Java Spec section 12.1.4.
+  const char *msg = NULL;
+  if (meth == NULL)
+    msg = "no suitable method `main' in class";
+  else if (! java::lang::reflect::Modifier::isStatic(meth->accflags))
+    msg = "`main' must be static";
+  else if (! java::lang::reflect::Modifier::isPublic(meth->accflags))
+    msg =  "`main' must be public";
+  if (msg != NULL)
+    {
+      fprintf (stderr, "%s\n", msg);
+      ::exit(1);
+    }
+
+  main_func *real_main = (main_func *) meth->ncode;
+  (*real_main) (args);
+}