001/*
002 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.hotspot.meta;
024
025import jdk.internal.jvmci.code.*;
026
027public class HotSpotRegisters implements HotSpotRegistersProvider {
028
029    private final Register threadRegister;
030    private final Register heapBaseRegister;
031    private final Register stackPointerRegister;
032
033    public HotSpotRegisters(Register threadRegister, Register heapBaseRegister, Register stackPointerRegister) {
034        this.threadRegister = threadRegister;
035        this.heapBaseRegister = heapBaseRegister;
036        this.stackPointerRegister = stackPointerRegister;
037    }
038
039    public Register getThreadRegister() {
040        assert !threadRegister.equals(Register.None) : "thread register is not defined";
041        return threadRegister;
042    }
043
044    public Register getHeapBaseRegister() {
045        assert !heapBaseRegister.equals(Register.None) : "heap base register is not defined";
046        return heapBaseRegister;
047    }
048
049    public Register getStackPointerRegister() {
050        assert !stackPointerRegister.equals(Register.None) : "stack pointer register is not defined";
051        return stackPointerRegister;
052    }
053}