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Datei: nativeInst_zero.cpp Sprache: C

/*
* Copyright (c) 2003, 2020, 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 "asm/assembler.inline.hpp"
#include "entry_zero.hpp"
#include "interpreter/zero/zeroInterpreter.hpp"
#include "nativeInst_zero.hpp"
#include "runtime/sharedRuntime.hpp"

// This method is called by nmethod::make_not_entrant 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.

void NativeJump::patch_verified_entry(address entry,
                                      address verified_entry,
                                      address dest) {
  assert(dest == SharedRuntime::get_handle_wrong_method_stub(), "should be");

  ((ZeroEntry*) verified_entry)->set_entry_point(
    (address) ZeroInterpreter::normal_entry);
}

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