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annotate graal/com.oracle.graal.truffle.hotspot/src/com/oracle/graal/truffle/hotspot/OptimizedCallTargetInstrumentation.java @ 15291:471e28b8f03b

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Move UnsafeAccess to graal.compiler.common.
author Josef Eisl <josef.eisl@jku.at>
date Tue, 22 Apr 2014 15:24:14 +0200
parents 96bb07a5d667
children 1c92d437179b
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dad021298158 use CompilationResultBuilderFactory to do patching of OptimizedCallTarget.call()
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1 /*
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2 * Copyright (c) 2013, 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
dad021298158 use CompilationResultBuilderFactory to do patching of OptimizedCallTarget.call()
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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
dad021298158 use CompilationResultBuilderFactory to do patching of OptimizedCallTarget.call()
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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.graal.truffle.hotspot;
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24
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25 import java.lang.reflect.*;
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26
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27 import com.oracle.graal.api.code.*;
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28 import com.oracle.graal.api.code.CompilationResult.Mark;
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29 import com.oracle.graal.asm.*;
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30 import com.oracle.graal.compiler.common.*;
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31 import com.oracle.graal.hotspot.*;
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32 import com.oracle.graal.hotspot.meta.HotSpotCodeCacheProvider.MarkId;
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33 import com.oracle.graal.hotspot.meta.*;
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34 import com.oracle.graal.lir.*;
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35 import com.oracle.graal.lir.asm.*;
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36 import com.oracle.graal.truffle.*;
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37
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38 /**
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39 * Mechanism for injecting special code into {@link OptimizedCallTarget#call(Object[])} .
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40 */
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41 public abstract class OptimizedCallTargetInstrumentation extends CompilationResultBuilder {
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42
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43 public OptimizedCallTargetInstrumentation(CodeCacheProvider codeCache, ForeignCallsProvider foreignCalls, FrameMap frameMap, Assembler asm, FrameContext frameContext,
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44 CompilationResult compilationResult) {
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45 super(codeCache, foreignCalls, frameMap, asm, frameContext, compilationResult);
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46 }
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47
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48 @Override
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49 public Mark recordMark(Object id) {
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50 Mark mark = super.recordMark(id);
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51 if (MarkId.getEnum((int) id) == MarkId.VERIFIED_ENTRY) {
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52 HotSpotRegistersProvider registers = HotSpotGraalRuntime.runtime().getHostProviders().getRegisters();
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53 injectTailCallCode(HotSpotGraalRuntime.runtime().getConfig(), registers);
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54 }
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55 return mark;
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56 }
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57
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58 protected static int getFieldOffset(String name, Class<?> declaringClass) {
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59 try {
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60 declaringClass.getDeclaredField(name).setAccessible(true);
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61 Field field = declaringClass.getDeclaredField(name);
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62 return (int) UnsafeAccess.unsafe.objectFieldOffset(field);
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63 } catch (NoSuchFieldException | SecurityException e) {
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64 throw GraalInternalError.shouldNotReachHere();
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65 }
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66 }
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67
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68 /**
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69 * Injects code into the verified entry point of that makes a tail-call to the target callee.
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70 */
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71 protected abstract void injectTailCallCode(HotSpotVMConfig config, HotSpotRegistersProvider registers);
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72 }