0N/A/*
553N/A * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
0N/A * Copyright 2008 Red Hat, Inc.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
553N/A *
553N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
553N/A * or visit www.oracle.com if you need additional information or have any
0N/A * questions.
0N/A *
0N/A */
0N/A
0N/A#include "precompiled.hpp"
0N/A#include "assembler_zero.inline.hpp"
0N/A#include "memory/resourceArea.hpp"
0N/A#include "nativeInst_zero.hpp"
0N/A#include "oops/oop.inline.hpp"
0N/A#include "runtime/handles.hpp"
0N/A#include "runtime/sharedRuntime.hpp"
0N/A#include "runtime/stubRoutines.hpp"
0N/A#include "utilities/ostream.hpp"
0N/A#ifdef COMPILER1
0N/A#include "c1/c1_Runtime1.hpp"
0N/A#endif
0N/A
0N/A// This method is called by nmethod::make_not_entrant_or_zombie to
0N/A// insert a jump to SharedRuntime::get_handle_wrong_method_stub()
0N/A// (dest) at the start of a compiled method (verified_entry) to avoid
0N/A// a race where a method is invoked while being made non-entrant.
0N/A//
0N/A// 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
}