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annotate graal/com.oracle.graal.truffle.hotspot.amd64/src/com/oracle/graal/truffle/hotspot/amd64/AMD64OptimizedCallTargetInstrumentationFactory.java @ 23394:964f28c04d7b default tip

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Don't fill the code cache with nmethods from CTW
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Fri, 05 Feb 2016 22:48:36 -0800
parents 39f9960bb6ae
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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, 2016, 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.amd64;
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24
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25 import static jdk.vm.ci.hotspot.HotSpotCallingConventionType.JavaCall;
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26 import jdk.vm.ci.amd64.AMD64;
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27 import jdk.vm.ci.code.CodeCacheProvider;
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28 import jdk.vm.ci.code.InstalledCode;
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29 import jdk.vm.ci.code.Register;
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30 import jdk.vm.ci.meta.JavaKind;
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31
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32 import com.oracle.graal.asm.Assembler;
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33 import com.oracle.graal.asm.Label;
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34 import com.oracle.graal.asm.amd64.AMD64Address;
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35 import com.oracle.graal.asm.amd64.AMD64Assembler.ConditionFlag;
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36 import com.oracle.graal.asm.amd64.AMD64MacroAssembler;
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37 import com.oracle.graal.code.CompilationResult;
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38 import com.oracle.graal.compiler.common.spi.ForeignCallsProvider;
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39 import com.oracle.graal.hotspot.amd64.AMD64HotSpotBackend;
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40 import com.oracle.graal.lir.asm.CompilationResultBuilder;
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41 import com.oracle.graal.lir.asm.DataBuilder;
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42 import com.oracle.graal.lir.asm.FrameContext;
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43 import com.oracle.graal.lir.framemap.FrameMap;
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44 import com.oracle.graal.serviceprovider.ServiceProvider;
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45 import com.oracle.graal.truffle.hotspot.OptimizedCallTargetInstrumentation;
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46 import com.oracle.graal.truffle.hotspot.OptimizedCallTargetInstrumentationFactory;
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47
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48 @ServiceProvider(OptimizedCallTargetInstrumentationFactory.class)
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49 public class AMD64OptimizedCallTargetInstrumentationFactory extends OptimizedCallTargetInstrumentationFactory {
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50
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51 public CompilationResultBuilder createBuilder(CodeCacheProvider codeCache, ForeignCallsProvider foreignCalls, FrameMap frameMap, Assembler asm, DataBuilder dataBuilder, FrameContext frameContext,
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52 CompilationResult compilationResult) {
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53 return new OptimizedCallTargetInstrumentation(codeCache, foreignCalls, frameMap, asm, dataBuilder, frameContext, compilationResult, config, registers) {
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54 @Override
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55 protected void injectTailCallCode() {
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56 @SuppressWarnings("hiding")
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57 AMD64MacroAssembler asm = (AMD64MacroAssembler) this.asm;
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58 Register thisRegister = codeCache.getRegisterConfig().getCallingConventionRegisters(JavaCall, JavaKind.Object)[0];
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59 Register spillRegister = AMD64.r10; // TODO(mg): fix me
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60 Label doProlog = new Label();
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61 int pos = asm.position();
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62
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63 AMD64Address codeBlobAddress = new AMD64Address(thisRegister, getFieldOffset("entryPoint", InstalledCode.class));
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64 /*
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65 * The first instruction must be at least 5 bytes long to be safe for not entrant
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66 * patching, so force a wider encoding of the movq instruction.
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67 */
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68 asm.movq(spillRegister, codeBlobAddress, true);
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69 assert asm.position() - pos >= AMD64HotSpotBackend.PATCHED_VERIFIED_ENTRY_POINT_INSTRUCTION_SIZE;
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70 asm.testq(spillRegister, spillRegister);
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71 asm.jcc(ConditionFlag.Equal, doProlog);
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72 asm.jmp(spillRegister);
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73
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74 asm.bind(doProlog);
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75 }
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76 };
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77 }
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78
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79 @Override
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80 public String getArchitecture() {
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81 return "AMD64";
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82 }
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83 }