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.ia64;

    26 

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

    28 import sun.jvm.hotspot.runtime.*;

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

    30 

    31 public class IA64Register extends Register {

    32 

    33   //

    34   private static final int STACKED_BASE = 32;

    35   private static final int STACKED_END = 127;

    36 

    37   // We put application registers here too rather than separate types

    38   private static final int APPL_BASE   = 128;

    39 

    40   private static final int nofRegisters = 129;  // total number of registers

    41 

    42   /** Constructor for an explicitly numbered register */

    43   public IA64Register(int number) {

    44     super(number);

    45   }

    46 

    47   public int getNumberOfRegisters() {

    48     return nofRegisters;

    49   }

    50 

    51   public boolean isStacked() {

    52     return (32 <= getNumber());

    53   }

    54 

    55   /** NOTE: this returns an offset in BYTES in this system! */

    56   public long spOffsetInSavedWindow() {

    57     return 0;

    58   }

    59 

    60   public String toString() {

    61     return IA64Registers.getRegisterName(number);

    62   }

    63 

    64   public boolean isFramePointer() {

    65     return number == APPL_BASE;

    66   }

    67 

    68   public boolean isStackPointer() {

    69     return number == 12;

    70   }

    71 

    72   public boolean isFloat() {

    73     return false;

    74   }

    75 

    76 }