Initial revision

From-SVN: r26263

libjava/java/lang/natFirstThread.cc

@@ -0,0 +1,56 @@
+// natFirstThread.cc - Implementation of FirstThread native methods.
+
+/* Copyright (C) 1998, 1999  Cygnus Solutions
+
+   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 <stdlib.h>
+
+#include <cni.h>
+#include <jvm.h>
+
+#include <java/lang/FirstThread.h>
+#include <java/lang/Class.h>
+#include <java/lang/String.h>
+#include <java/lang/System.h>
+#include <java/lang/reflect/Modifier.h>
+#include <java/io/PrintStream.h>
+
+#define DIE(Message)  die (JvNewStringLatin1 (Message))
+
+typedef void main_func (jobject);
+
+void
+java::lang::FirstThread::run (void)
+{
+  Utf8Const* main_signature = _Jv_makeUtf8Const ("([Ljava.lang.String;)V", 22);
+  Utf8Const* main_name = _Jv_makeUtf8Const ("main", 4);
+
+#if 0
+  // Note: this turns out to be more painful than useful.  Apparently
+  // many people rely on being able to have main in a non-public
+  // class.
+  // This is based on my reading of 12.3.3.
+  if (! java::lang::reflect::Modifier::isPublic(klass->getModifiers()))
+    DIE ("class must be public");
+#endif
+
+  _Jv_Method *meth = _Jv_GetMethodLocal (klass, main_name, main_signature);
+
+  // Some checks from Java Spec section 12.1.4.
+  if (meth == NULL)
+    DIE ("no suitable method `main' in class");
+  if (! java::lang::reflect::Modifier::isStatic(meth->accflags))
+    DIE ("`main' must be static");
+  if (! java::lang::reflect::Modifier::isPublic(meth->accflags))
+    DIE ("`main' must be public");
+
+  main_func *real_main = (main_func *) meth->ncode;
+  (*real_main) (args);
+}