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annotate graal/com.oracle.max.asm/src/com/oracle/max/asm/AbstractAssembler.java @ 3733:e233f5660da4

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Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
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children bc8527f3071c
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3733
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1 /*
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2 * Copyright (c) 2009, 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.oracle.max.asm;
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24
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25 import com.sun.cri.ci.*;
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26 import com.sun.cri.ci.CiArchitecture.*;
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27
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28 /**
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29 * The platform-independent base class for the assembler.
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30 */
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31 public abstract class AbstractAssembler {
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32 public final CiTarget target;
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33 public final Buffer codeBuffer;
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34
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35 public AbstractAssembler(CiTarget target) {
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36 this.target = target;
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37
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38 if (target.arch.byteOrder == ByteOrder.BigEndian) {
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39 this.codeBuffer = new Buffer.BigEndian();
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40 } else {
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41 this.codeBuffer = new Buffer.LittleEndian();
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42 }
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43 }
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44
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45 public final void bind(Label l) {
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46 assert !l.isBound() : "can bind label only once";
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47 l.bind(codeBuffer.position());
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48 l.patchInstructions(this);
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49 }
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50
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51 protected abstract void patchJumpTarget(int branch, int target);
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52
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53 protected final void emitByte(int x) {
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54 codeBuffer.emitByte(x);
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55 }
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56
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57 protected final void emitShort(int x) {
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58 codeBuffer.emitShort(x);
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59 }
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60
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61 protected final void emitInt(int x) {
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62 codeBuffer.emitInt(x);
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63 }
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64
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65 protected final void emitLong(long x) {
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66 codeBuffer.emitLong(x);
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67 }
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68 }