| /* |
| * Copyright (c) 2013, 2015, 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 org.graalvm.compiler.hotspot; |
| |
| import static jdk.vm.ci.code.CodeUtil.getCallingConvention; |
| import static jdk.vm.ci.common.InitTimer.timer; |
| |
| import org.graalvm.compiler.core.common.spi.ForeignCallDescriptor; |
| import org.graalvm.compiler.hotspot.meta.HotSpotHostForeignCallsProvider; |
| import org.graalvm.compiler.hotspot.meta.HotSpotLoweringProvider; |
| import org.graalvm.compiler.hotspot.meta.HotSpotProviders; |
| import org.graalvm.compiler.hotspot.stubs.DeoptimizationStub; |
| import org.graalvm.compiler.hotspot.stubs.Stub; |
| import org.graalvm.compiler.hotspot.stubs.UncommonTrapStub; |
| import org.graalvm.compiler.lir.asm.CompilationResultBuilder; |
| import org.graalvm.compiler.lir.framemap.ReferenceMapBuilder; |
| import org.graalvm.compiler.nodes.StructuredGraph; |
| |
| import jdk.vm.ci.code.CallingConvention; |
| import jdk.vm.ci.common.InitTimer; |
| import jdk.vm.ci.hotspot.HotSpotCallingConventionType; |
| import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime; |
| import jdk.vm.ci.meta.JavaType; |
| import jdk.vm.ci.runtime.JVMCICompiler; |
| |
| /** |
| * Common functionality of HotSpot host backends. |
| */ |
| public abstract class HotSpotHostBackend extends HotSpotBackend { |
| |
| /** |
| * Descriptor for {@code SharedRuntime::deopt_blob()->unpack()} or |
| * {@link DeoptimizationStub#deoptimizationHandler} depending on |
| * {@link HotSpotBackend.Options#PreferGraalStubs}. |
| */ |
| public static final ForeignCallDescriptor DEOPTIMIZATION_HANDLER = new ForeignCallDescriptor("deoptHandler", void.class); |
| |
| /** |
| * Descriptor for {@code SharedRuntime::deopt_blob()->uncommon_trap()} or |
| * {@link UncommonTrapStub#uncommonTrapHandler} depending on |
| * {@link HotSpotBackend.Options#PreferGraalStubs}. |
| */ |
| public static final ForeignCallDescriptor UNCOMMON_TRAP_HANDLER = new ForeignCallDescriptor("uncommonTrapHandler", void.class); |
| |
| protected final GraalHotSpotVMConfig config; |
| |
| public HotSpotHostBackend(GraalHotSpotVMConfig config, HotSpotGraalRuntimeProvider runtime, HotSpotProviders providers) { |
| super(runtime, providers); |
| this.config = config; |
| } |
| |
| @Override |
| @SuppressWarnings("try") |
| public void completeInitialization(HotSpotJVMCIRuntime jvmciRuntime) { |
| final HotSpotProviders providers = getProviders(); |
| HotSpotHostForeignCallsProvider foreignCalls = (HotSpotHostForeignCallsProvider) providers.getForeignCalls(); |
| final HotSpotLoweringProvider lowerer = (HotSpotLoweringProvider) providers.getLowerer(); |
| |
| try (InitTimer st = timer("foreignCalls.initialize")) { |
| foreignCalls.initialize(providers); |
| } |
| try (InitTimer st = timer("lowerer.initialize")) { |
| lowerer.initialize(providers, config); |
| } |
| } |
| |
| protected CallingConvention makeCallingConvention(StructuredGraph graph, Stub stub) { |
| if (stub != null) { |
| return stub.getLinkage().getIncomingCallingConvention(); |
| } |
| |
| CallingConvention cc = getCallingConvention(getCodeCache(), HotSpotCallingConventionType.JavaCallee, graph.method(), this); |
| if (graph.getEntryBCI() != JVMCICompiler.INVOCATION_ENTRY_BCI) { |
| // for OSR, only a pointer is passed to the method. |
| JavaType[] parameterTypes = new JavaType[]{getMetaAccess().lookupJavaType(long.class)}; |
| CallingConvention tmp = getCodeCache().getRegisterConfig().getCallingConvention(HotSpotCallingConventionType.JavaCallee, getMetaAccess().lookupJavaType(void.class), parameterTypes, this); |
| cc = new CallingConvention(cc.getStackSize(), cc.getReturn(), tmp.getArgument(0)); |
| } |
| return cc; |
| } |
| |
| public void emitStackOverflowCheck(CompilationResultBuilder crb) { |
| if (config.useStackBanging) { |
| // Each code entry causes one stack bang n pages down the stack where n |
| // is configurable by StackShadowPages. The setting depends on the maximum |
| // depth of VM call stack or native before going back into java code, |
| // since only java code can raise a stack overflow exception using the |
| // stack banging mechanism. The VM and native code does not detect stack |
| // overflow. |
| // The code in JavaCalls::call() checks that there is at least n pages |
| // available, so all entry code needs to do is bang once for the end of |
| // this shadow zone. |
| // The entry code may need to bang additional pages if the framesize |
| // is greater than a page. |
| |
| int pageSize = config.vmPageSize; |
| int bangEnd = config.stackShadowPages * pageSize; |
| |
| // This is how far the previous frame's stack banging extended. |
| int bangEndSafe = bangEnd; |
| |
| int frameSize = Math.max(crb.frameMap.frameSize(), crb.compilationResult.getMaxInterpreterFrameSize()); |
| if (frameSize > pageSize) { |
| bangEnd += frameSize; |
| } |
| |
| int bangOffset = bangEndSafe; |
| if (bangOffset <= bangEnd) { |
| crb.blockComment("[stack overflow check]"); |
| } |
| while (bangOffset <= bangEnd) { |
| // Need at least one stack bang at end of shadow zone. |
| bangStackWithOffset(crb, bangOffset); |
| bangOffset += pageSize; |
| } |
| } |
| } |
| |
| protected abstract void bangStackWithOffset(CompilationResultBuilder crb, int bangOffset); |
| |
| @Override |
| public ReferenceMapBuilder newReferenceMapBuilder(int totalFrameSize) { |
| return new HotSpotReferenceMapBuilder(totalFrameSize, config.maxOopMapStackOffset); |
| } |
| |
| } |