Mercurial > hg > truffle
view graal/com.oracle.graal.truffle.hotspot/src/com/oracle/graal/truffle/hotspot/OptimizedCallTargetInstrumentation.java @ 21541:5e868236654f
moved UnsafeAccess to com.oracle.jvmci.common (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 25 May 2015 22:17:10 +0200 |
parents | 1da7aef31a08 |
children | 93c50cefb9e8 |
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/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.graal.truffle.hotspot; import java.lang.reflect.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.code.CompilationResult.Mark; import com.oracle.graal.asm.*; import com.oracle.graal.compiler.common.*; import com.oracle.graal.hotspot.*; import com.oracle.graal.hotspot.jvmci.*; import com.oracle.graal.hotspot.meta.*; import com.oracle.graal.lir.asm.*; import com.oracle.graal.lir.framemap.*; import com.oracle.graal.truffle.*; import com.oracle.jvmci.common.*; /** * Mechanism for injecting special code into {@link OptimizedCallTarget#call(Object[])} . */ public abstract class OptimizedCallTargetInstrumentation extends CompilationResultBuilder { public OptimizedCallTargetInstrumentation(CodeCacheProvider codeCache, ForeignCallsProvider foreignCalls, FrameMap frameMap, Assembler asm, FrameContext frameContext, CompilationResult compilationResult) { super(codeCache, foreignCalls, frameMap, asm, frameContext, compilationResult); } @Override public Mark recordMark(Object id) { Mark mark = super.recordMark(id); HotSpotCodeCacheProvider hsCodeCache = (HotSpotCodeCacheProvider) codeCache; if ((int) id == hsCodeCache.config.MARKID_VERIFIED_ENTRY) { HotSpotRegistersProvider registers = HotSpotGraalRuntime.runtime().getHostProviders().getRegisters(); injectTailCallCode(HotSpotGraalRuntime.runtime().getConfig(), registers); } return mark; } protected static int getFieldOffset(String name, Class<?> declaringClass) { try { declaringClass.getDeclaredField(name).setAccessible(true); Field field = declaringClass.getDeclaredField(name); return (int) UnsafeAccess.unsafe.objectFieldOffset(field); } catch (NoSuchFieldException | SecurityException e) { throw GraalInternalError.shouldNotReachHere(); } } /** * Injects code into the verified entry point of that makes a tail-call to the target callee. */ protected abstract void injectTailCallCode(HotSpotVMConfig config, HotSpotRegistersProvider registers); }