/*
* Copyright (c) 2007, 2011, 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 com.sun.max.asm.sparc;
import com.sun.max.asm.*;
import com.sun.max.util.*;
/**
* The argument to the Write State Register and Read State Register instructions.
*/
public class StateRegister extends AbstractSymbolicArgument {
StateRegister(int value) {
super(value);
}
public static class Writable extends StateRegister {
Writable(int value) {
super(value);
}
}
public static final class ASR extends Writable {
private ASR(int value) {
super(value);
}
}
/**
* @return true if this is the Y register or an Ancillary State register
*/
public boolean isYorASR() {
return this == Y || value() >= 16 && value() <= 31;
}
public static final Writable Y = new Writable(0);
public static final Writable CCR = new Writable(2);
public static final Writable ASI = new Writable(3);
public static final StateRegister TICK = new StateRegister(4);
public static final StateRegister PC = new StateRegister(5);
public static final Writable FPRS = new Writable(6);
public static final ASR ASR16 = new ASR(16);
public static final ASR ASR17 = new ASR(17);
public static final ASR ASR18 = new ASR(18);
public static final ASR ASR19 = new ASR(19);
public static final ASR ASR20 = new ASR(20);
public static final ASR ASR21 = new ASR(21);
public static final ASR ASR22 = new ASR(22);
public static final ASR ASR23 = new ASR(23);
public static final ASR ASR24 = new ASR(24);
public static final ASR ASR25 = new ASR(25);
public static final ASR ASR26 = new ASR(26);
public static final ASR ASR27 = new ASR(27);
public static final ASR ASR28 = new ASR(28);
public static final ASR ASR29 = new ASR(29);
public static final ASR ASR30 = new ASR(30);
public static final ASR ASR31 = new ASR(31);
public static final Symbolizer<StateRegister> SYMBOLIZER = Symbolizer.Static.initialize(StateRegister.class);
public static final Symbolizer<Writable> WRITE_ONLY_SYMBOLIZER = Symbolizer.Static.initialize(StateRegister.class, Writable.class);
}