1 /*
   2  * Copyright 2003 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any 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 }