hotspot/agent/src/share/classes/sun/jvm/hotspot/asm/x86/X86MMXRegisters.java

/*
 * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

package sun.jvm.hotspot.asm.x86;

import sun.jvm.hotspot.utilities.*;

/* 8 64-bit registers called MMX registers*/

public class X86MMXRegisters {

   public static final int NUM_MMX_REGISTERS = 8;

   public static final X86MMXRegister MM0;
   public static final X86MMXRegister MM1;
   public static final X86MMXRegister MM2;
   public static final X86MMXRegister MM3;
   public static final X86MMXRegister MM4;
   public static final X86MMXRegister MM5;
   public static final X86MMXRegister MM6;
   public static final X86MMXRegister MM7;

   private static X86MMXRegister mmxRegisters[];

   static {
      //MMX registers
      MM0 = new X86MMXRegister(0, "%mm0");
      MM1 = new X86MMXRegister(1, "%mm1");
      MM2 = new X86MMXRegister(2, "%mm2");
      MM3 = new X86MMXRegister(3, "%mm3");
      MM4 = new X86MMXRegister(4, "%mm4");
      MM5 = new X86MMXRegister(5, "%mm5");
      MM6 = new X86MMXRegister(6, "%mm6");
      MM7 = new X86MMXRegister(7, "%mm7");

      mmxRegisters = (new X86MMXRegister[] {
            MM0, MM1, MM2, MM3, MM4, MM5, MM6, MM7
      });
   }

   public static int getNumberOfRegisters() {
      return NUM_MMX_REGISTERS;
   }

   //Return the register name
   public static String getRegisterName(int regNum) {
      if (Assert.ASSERTS_ENABLED) {
         Assert.that(regNum > -1 && regNum < NUM_MMX_REGISTERS, "invalid MMX register number!");
      }
      return mmxRegisters[regNum].toString();
   }

   public static X86MMXRegister getRegister(int regNum) {
      if (Assert.ASSERTS_ENABLED) {
         Assert.that(regNum > -1 && regNum < NUM_MMX_REGISTERS, "invalid MMX register number!");
      }
     return mmxRegisters[regNum];
   }
}