// natFirstThread.cc - Implementation of FirstThread native methods.

/* Copyright (C) 1998, 1999  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 <stdlib.h>

#include <gcj/cni.h>
#include <jvm.h>

#include <gnu/gcj/runtime/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
gnu::gcj::runtime::FirstThread::run (void)
{
  Utf8Const* main_signature = _Jv_makeUtf8Const ("([Ljava.lang.String;)V", 22);
  Utf8Const* main_name = _Jv_makeUtf8Const ("main", 4);

  if (klass == NULL)
    {
      klass = java::lang::Class::forName (klass_name);
      if (klass != NULL) _Jv_InitClass (klass);
    }

  _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);
}