Mercurial > hg > truffle
annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/MutableAssembledObject.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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1 /* |
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2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.max.asm; |
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24 |
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25 /** |
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26 * An assembled object whose position and size may change. |
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27 * Examples include span-dependent jump instructions to labels and padding bytes for memory alignment. |
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28 */ |
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29 public abstract class MutableAssembledObject extends AssembledObject { |
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30 |
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31 protected abstract void assemble() throws AssemblyException; |
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32 |
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33 private final Assembler assembler; |
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34 private int variablePosition; |
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35 protected int variableSize; |
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36 |
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37 protected MutableAssembledObject(Assembler assembler, int startPosition, int endPosition) { |
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38 super(startPosition, endPosition); |
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39 this.assembler = assembler; |
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40 this.variablePosition = startPosition; |
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41 this.variableSize = endPosition - startPosition; |
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42 } |
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43 |
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44 protected Assembler assembler() { |
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45 return assembler; |
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46 } |
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47 |
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48 public final int initialStartPosition() { |
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49 return super.startPosition(); |
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50 } |
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51 |
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52 public final int initialEndPosition() { |
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53 return super.endPosition(); |
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54 } |
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55 |
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56 public final int initialSize() { |
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57 return super.size(); |
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58 } |
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59 |
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60 public void adjust(int delta) { |
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61 variablePosition += delta; |
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62 } |
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63 |
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64 @Override |
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65 public int startPosition() { |
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66 return variablePosition; |
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67 } |
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68 |
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69 @Override |
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70 public int endPosition() { |
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71 return variablePosition + variableSize; |
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72 } |
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73 |
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74 @Override |
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75 public int size() { |
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76 return variableSize; |
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77 } |
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78 } |