Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/Register.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children |
| rev | line source |
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| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.asm; | |
| 26 | |
| 27 /** <P> Register is an abstraction over machine registers. </P> | |
| 28 | |
| 29 <P> FIXME: should align constants with underlying VM code </P> */ | |
| 30 | |
| 31 public abstract class Register extends ImmediateOrRegister { | |
| 32 /** Corresponds to the machine register code. -1 stands for invalid | |
| 33 register (initial value). */ | |
| 34 protected int number; | |
| 35 | |
| 36 public Register() { | |
| 37 number = -1; | |
| 38 } | |
| 39 | |
| 40 public Register(int number) { | |
| 41 this.number = number; | |
| 42 } | |
| 43 | |
| 44 /** Must be overridden by subclass to indicate number of available | |
| 45 registers on this platform */ | |
| 46 public abstract int getNumberOfRegisters(); | |
| 47 | |
| 48 public boolean isValid() { | |
| 49 return ((0 <= number) && (number <= getNumberOfRegisters())); | |
| 50 } | |
| 51 | |
| 52 public int getNumber() { | |
| 53 return number; | |
| 54 } | |
| 55 | |
| 56 public boolean equals(Object x) { | |
| 57 if (x == null) { | |
| 58 return false; | |
| 59 } | |
| 60 | |
| 61 if (!getClass().equals(x.getClass())) { | |
| 62 return false; | |
| 63 } | |
| 64 | |
| 65 Register reg = (Register) x; | |
| 66 | |
| 67 return (reg.getNumber() == getNumber()); | |
| 68 } | |
| 69 | |
| 70 public int hashCode() { | |
| 71 return number; | |
| 72 } | |
| 73 | |
| 74 public boolean isRegister() { | |
| 75 return true; | |
| 76 } | |
| 77 | |
| 78 public abstract boolean isStackPointer(); | |
| 79 public abstract boolean isFramePointer(); | |
| 80 public abstract boolean isFloat(); | |
| 81 } |