hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotHostBackend.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotHostBackend.java Thu Feb 16 15:46:09 2017 -0800
@@ -0,0 +1,146 @@
+/*
+ * 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);
+ }
+
+}