Mercurial > hg > truffle
annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/AddressLiteral.java @ 4213:e4cfa571d8c4
Do not emit stack-to-stack moves.
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Tue, 03 Jan 2012 18:47:27 -0800 |
parents | e233f5660da4 |
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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 import com.sun.max.lang.*; |
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26 |
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27 /** |
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28 * Represents a position assembled as an absolute address. |
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29 */ |
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30 public class AddressLiteral extends MutableAssembledObject { |
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31 |
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32 protected AddressLiteral(Assembler assembler, int startPosition, int endPosition, Label label) { |
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33 super(assembler, startPosition, endPosition); |
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34 assembler.addFixedSizeAssembledObject(this); |
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35 this.label = label; |
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36 } |
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37 |
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38 private final Label label; |
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39 |
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40 @Override |
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41 protected final void assemble() throws AssemblyException { |
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42 final Assembler assembler = assembler(); |
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43 final WordWidth wordWidth = assembler.wordWidth(); |
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44 if (wordWidth == WordWidth.BITS_64) { |
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45 assembler.emitLong(assembler.baseAddress() + label.position()); |
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46 } else if (wordWidth == WordWidth.BITS_32) { |
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47 assembler.emitInt((int) (assembler.baseAddress() + label.position())); |
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48 } else if (wordWidth == WordWidth.BITS_16) { |
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49 assembler.emitShort((short) (assembler.baseAddress() + label.position())); |
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50 } else { |
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51 assert wordWidth == WordWidth.BITS_8; |
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52 assembler.emitByte((byte) (assembler.baseAddress() + label.position())); |
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53 } |
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54 } |
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55 |
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56 public final boolean isCode() { |
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57 return false; |
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58 } |
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59 } |