/*
 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
 * 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.
 */
package jdk.vm.ci.code.site;

Represents a pointer to some location in the data section that should be patched into the code.
/** * Represents a pointer to some location in the data section that should be {@link DataPatch * patched} into the code. */
public final class DataSectionReference extends Reference { private boolean initialized; private int offset; public DataSectionReference() { // will be set after the data section layout is fixed offset = 0xDEADDEAD; } public int getOffset() { assert initialized; return offset; } public void setOffset(int offset) { assert !initialized; initialized = true; this.offset = offset; } @Override public int hashCode() { return offset; } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (obj instanceof DataSectionReference) { DataSectionReference that = (DataSectionReference) obj; return this.offset == that.offset; } return false; } @Override public String toString() { if (initialized) { return String.format("DataSection[0x%x]", offset); } else { return "DataSection[?]"; } } }