1 /*

     2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 package sun.jvm.hotspot.asm.x86;

    26 

    27 import sun.jvm.hotspot.utilities.*;

    28 

    29 /* 8 64-bit registers called MMX registers*/

    30 

    31 public class X86MMXRegisters {

    32 

    33    public static final int NUM_MMX_REGISTERS = 8;

    34 

    35    public static final X86MMXRegister MM0;

    36    public static final X86MMXRegister MM1;

    37    public static final X86MMXRegister MM2;

    38    public static final X86MMXRegister MM3;

    39    public static final X86MMXRegister MM4;

    40    public static final X86MMXRegister MM5;

    41    public static final X86MMXRegister MM6;

    42    public static final X86MMXRegister MM7;

    43 

    44    private static X86MMXRegister mmxRegisters[];

    45 

    46    static {

    47       //MMX registers

    48       MM0 = new X86MMXRegister(0, "%mm0");

    49       MM1 = new X86MMXRegister(1, "%mm1");

    50       MM2 = new X86MMXRegister(2, "%mm2");

    51       MM3 = new X86MMXRegister(3, "%mm3");

    52       MM4 = new X86MMXRegister(4, "%mm4");

    53       MM5 = new X86MMXRegister(5, "%mm5");

    54       MM6 = new X86MMXRegister(6, "%mm6");

    55       MM7 = new X86MMXRegister(7, "%mm7");

    56 

    57       mmxRegisters = (new X86MMXRegister[] {

    58             MM0, MM1, MM2, MM3, MM4, MM5, MM6, MM7

    59       });

    60    }

    61 

    62    public static int getNumberOfRegisters() {

    63       return NUM_MMX_REGISTERS;

    64    }

    65 

    66    //Return the register name

    67    public static String getRegisterName(int regNum) {

    68       if (Assert.ASSERTS_ENABLED) {

    69          Assert.that(regNum > -1 && regNum < NUM_MMX_REGISTERS, "invalid MMX register number!");

    70       }

    71       return mmxRegisters[regNum].toString();

    72    }

    73 

    74    public static X86MMXRegister getRegister(int regNum) {

    75       if (Assert.ASSERTS_ENABLED) {

    76          Assert.that(regNum > -1 && regNum < NUM_MMX_REGISTERS, "invalid MMX register number!");

    77       }

    78      return mmxRegisters[regNum];

    79    }

    80 }