Mercurial > hg > graal-compiler
annotate graal/com.oracle.max.asm/src/com/oracle/max/asm/AbstractAssembler.java @ 5580:69358a2182a3
added printf-like facility (Log.java) for logging debug output in snippets
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 13 Jun 2012 00:15:15 +0200 |
parents | b6617d13ea44 |
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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.oracle.graal.api.code.*; |
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26 import com.oracle.graal.api.code.Architecture.*; |
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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 TargetDescription target; |
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33 public final Buffer codeBuffer; |
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34 |
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35 public AbstractAssembler(TargetDescription 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 public abstract void align(int modulus); |
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52 |
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53 public abstract void jmp(Label l); |
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54 |
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55 protected abstract void patchJumpTarget(int branch, int jumpTarget); |
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56 |
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57 /** |
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58 * Emits instruction(s) that access an address specified by a given displacement from the stack pointer |
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59 * in the direction that the stack grows (which is down on most architectures). |
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60 * |
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61 * @param disp the displacement from the stack pointer at which the stack should be accessed |
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62 */ |
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63 public abstract void bangStack(int disp); |
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64 |
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65 protected final void emitByte(int x) { |
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66 codeBuffer.emitByte(x); |
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67 } |
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68 |
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69 protected final void emitShort(int x) { |
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70 codeBuffer.emitShort(x); |
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71 } |
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72 |
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73 protected final void emitInt(int x) { |
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74 codeBuffer.emitInt(x); |
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75 } |
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76 |
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77 protected final void emitLong(long x) { |
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78 codeBuffer.emitLong(x); |
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79 } |
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80 } |