001/*
002 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003 *
004 *  This file is licensed to You under the Eclipse Public License (EPL);
005 *  You may not use this file except in compliance with the License. You
006 *  may obtain a copy of the License at
007 *
008 *      http://www.opensource.org/licenses/eclipse-1.0.php
009 *
010 *  See the COPYRIGHT.txt file distributed with this work for information
011 *  regarding copyright ownership.
012 */
013package org.jikesrvm.architecture;
014
015import org.jikesrvm.VM;
016
017import org.vmmagic.pragma.Uninterruptible;
018
019public class ArchConstants {
020
021  @Uninterruptible
022  public static int getLogInstructionWidth() {
023    if (VM.BuildForIA32) {
024      return org.jikesrvm.ia32.RegisterConstants.LG_INSTRUCTION_WIDTH;
025    } else {
026      if (VM.VerifyAssertions) VM._assert(VM.BuildForPowerPC);
027      return org.jikesrvm.ppc.RegisterConstants.LG_INSTRUCTION_WIDTH;
028    }
029  }
030
031  @Uninterruptible
032  public static int getNumberOfGPRs() {
033    if (VM.BuildForIA32) {
034      return org.jikesrvm.ia32.RegisterConstants.NUM_GPRS;
035    } else {
036      if (VM.VerifyAssertions) VM._assert(VM.BuildForPowerPC);
037      return org.jikesrvm.ppc.RegisterConstants.NUM_GPRS;
038    }
039  }
040
041  @Uninterruptible
042  public static int getNumberOfFPRs() {
043    if (VM.BuildForIA32) {
044      return org.jikesrvm.ia32.RegisterConstants.NUM_FPRS;
045    } else {
046      if (VM.VerifyAssertions) VM._assert(VM.BuildForPowerPC);
047      return org.jikesrvm.ppc.RegisterConstants.NUM_FPRS;
048    }
049  }
050
051  @Uninterruptible
052  public static int getInstructionWidth() {
053    if (VM.BuildForIA32) {
054      return org.jikesrvm.ia32.RegisterConstants.INSTRUCTION_WIDTH;
055    } else {
056      if (VM.VerifyAssertions) VM._assert(VM.BuildForPowerPC);
057      return org.jikesrvm.ppc.RegisterConstants.INSTRUCTION_WIDTH;
058    }
059  }
060
061}