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annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/MutableAssembledObject.java @ 4235:23f41c48b19b

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Re-enabled Java cleaning in gate.
author Doug Simon <doug.simon@oracle.com>
date Fri, 06 Jan 2012 14:22:57 +0100
parents e233f5660da4
children
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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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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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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 }