/*

 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.

 * Copyright 2008 Red Hat, Inc.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "assembler_zero.inline.hpp"

#include "entry_zero.hpp"

#include "interpreter/cppInterpreter.hpp"

#include "memory/resourceArea.hpp"

#include "nativeInst_zero.hpp"

#include "oops/oop.inline.hpp"

#include "runtime/handles.hpp"

#include "runtime/sharedRuntime.hpp"

#include "runtime/stubRoutines.hpp"

#include "utilities/ostream.hpp"

#ifdef COMPILER1

#include "c1/c1_Runtime1.hpp"

#endif

// This method is called by nmethod::make_not_entrant_or_zombie to

// insert a jump to SharedRuntime::get_handle_wrong_method_stub()

// (dest) at the start of a compiled method (verified_entry) to avoid

// a race where a method is invoked while being made non-entrant.

//

// In Shark, verified_entry is a pointer to a SharkEntry.  We can

// handle this simply by changing it's entry point to point at the

// interpreter.  This only works because the interpreter and Shark

// calling conventions are the same.

void NativeJump::patch_verified_entry(address entry,

                                      address verified_entry,

                                      address dest) {

  assert(dest == SharedRuntime::get_handle_wrong_method_stub(), "should be");

#ifdef CC_INTERP

  ((ZeroEntry*) verified_entry)->set_entry_point(

    (address) CppInterpreter::normal_entry);

#else

  Unimplemented();

#endif // CC_INTERP

}