1 /*
   2  * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package org.graalvm.compiler.hotspot.aarch64;
  26 
  27 import static jdk.vm.ci.aarch64.AArch64.r0;
  28 import static jdk.vm.ci.aarch64.AArch64.r3;
  29 import static jdk.vm.ci.hotspot.HotSpotCallingConventionType.NativeCall;
  30 import static jdk.vm.ci.meta.Value.ILLEGAL;
  31 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.JUMP_ADDRESS;
  32 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Reexecutability.REEXECUTABLE_ONLY_AFTER_EXCEPTION;
  33 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.RegisterEffect.PRESERVES_REGISTERS;
  34 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Transition.LEAF;
  35 import static org.graalvm.compiler.hotspot.replacements.CRC32CSubstitutions.UPDATE_BYTES_CRC32C;
  36 import static org.graalvm.compiler.hotspot.replacements.CRC32Substitutions.UPDATE_BYTES_CRC32;
  37 import static jdk.internal.vm.compiler.word.LocationIdentity.any;
  38 
  39 import org.graalvm.compiler.core.common.LIRKind;
  40 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
  41 import org.graalvm.compiler.hotspot.HotSpotBackend;
  42 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkageImpl;
  43 import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;
  44 import org.graalvm.compiler.hotspot.meta.HotSpotHostForeignCallsProvider;
  45 import org.graalvm.compiler.hotspot.meta.HotSpotProviders;
  46 import org.graalvm.compiler.options.OptionValues;
  47 import org.graalvm.compiler.word.WordTypes;
  48 
  49 import jdk.vm.ci.code.CallingConvention;
  50 import jdk.vm.ci.code.CodeCacheProvider;
  51 import jdk.vm.ci.code.RegisterValue;
  52 import jdk.vm.ci.code.TargetDescription;
  53 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
  54 import jdk.vm.ci.meta.MetaAccessProvider;
  55 import jdk.vm.ci.meta.PlatformKind;
  56 import jdk.vm.ci.meta.Value;
  57 
  58 public class AArch64HotSpotForeignCallsProvider extends HotSpotHostForeignCallsProvider {
  59 
  60     private final Value[] nativeABICallerSaveRegisters;
  61 
  62     public AArch64HotSpotForeignCallsProvider(HotSpotJVMCIRuntime jvmciRuntime, HotSpotGraalRuntimeProvider runtime, MetaAccessProvider metaAccess, CodeCacheProvider codeCache,
  63                     WordTypes wordTypes, Value[] nativeABICallerSaveRegisters) {
  64         super(jvmciRuntime, runtime, metaAccess, codeCache, wordTypes);
  65         this.nativeABICallerSaveRegisters = nativeABICallerSaveRegisters;
  66     }
  67 
  68     @Override
  69     public void initialize(HotSpotProviders providers, OptionValues options) {
  70         GraalHotSpotVMConfig config = runtime.getVMConfig();
  71         TargetDescription target = providers.getCodeCache().getTarget();
  72         PlatformKind word = target.arch.getWordKind();
  73 
  74         // The calling convention for the exception handler stub is (only?) defined in
  75         // TemplateInterpreterGenerator::generate_throw_exception()
  76         RegisterValue exception = r0.asValue(LIRKind.reference(word));
  77         RegisterValue exceptionPc = r3.asValue(LIRKind.value(word));
  78         CallingConvention exceptionCc = new CallingConvention(0, ILLEGAL, exception, exceptionPc);
  79         register(new HotSpotForeignCallLinkageImpl(HotSpotBackend.EXCEPTION_HANDLER, 0L, PRESERVES_REGISTERS, LEAF, REEXECUTABLE_ONLY_AFTER_EXCEPTION, exceptionCc, null, any()));
  80         register(new HotSpotForeignCallLinkageImpl(HotSpotBackend.EXCEPTION_HANDLER_IN_CALLER, JUMP_ADDRESS, PRESERVES_REGISTERS, LEAF, REEXECUTABLE_ONLY_AFTER_EXCEPTION, exceptionCc, null, any()));
  81 
  82         // These stubs do callee saving
  83         if (config.useCRC32Intrinsics) {
  84             registerForeignCall(UPDATE_BYTES_CRC32, config.updateBytesCRC32Stub, NativeCall, PRESERVES_REGISTERS, LEAF, REEXECUTABLE_ONLY_AFTER_EXCEPTION, any());
  85         }
  86         if (config.useCRC32CIntrinsics) {
  87             registerForeignCall(UPDATE_BYTES_CRC32C, config.updateBytesCRC32C, NativeCall, PRESERVES_REGISTERS, LEAF, REEXECUTABLE_ONLY_AFTER_EXCEPTION, any());
  88         }
  89 
  90         super.initialize(providers, options);
  91     }
  92 
  93     @Override
  94     public Value[] getNativeABICallerSaveRegisters() {
  95         return nativeABICallerSaveRegisters;
  96     }
  97 
  98 }