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 package org.graalvm.compiler.hotspot.aarch64;
  24 
  25 import static org.graalvm.compiler.core.common.LocationIdentity.any;
  26 import static org.graalvm.compiler.hotspot.HotSpotBackend.Options.PreferGraalStubs;
  27 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.JUMP_ADDRESS;
  28 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.RegisterEffect.PRESERVES_REGISTERS;
  29 import static org.graalvm.compiler.hotspot.HotSpotForeignCallLinkage.Transition.LEAF;
  30 import static org.graalvm.compiler.hotspot.replacements.CRC32Substitutions.UPDATE_BYTES_CRC32;
  31 import static jdk.vm.ci.aarch64.AArch64.r0;
  32 import static jdk.vm.ci.aarch64.AArch64.r3;
  33 import static jdk.vm.ci.hotspot.HotSpotCallingConventionType.NativeCall;
  34 import static jdk.vm.ci.meta.Value.ILLEGAL;
  35 
  36 import org.graalvm.compiler.core.common.LIRKind;
  37 import org.graalvm.compiler.debug.GraalError;
  38 import org.graalvm.compiler.hotspot.HotSpotBackend;
  39 import org.graalvm.compiler.hotspot.HotSpotForeignCallLinkageImpl;
  40 import org.graalvm.compiler.hotspot.HotSpotGraalRuntimeProvider;
  41 import org.graalvm.compiler.hotspot.GraalHotSpotVMConfig;
  42 import org.graalvm.compiler.hotspot.meta.HotSpotHostForeignCallsProvider;
  43 import org.graalvm.compiler.hotspot.meta.HotSpotProviders;
  44 import org.graalvm.compiler.word.WordTypes;
  45 
  46 import jdk.vm.ci.code.CallingConvention;
  47 import jdk.vm.ci.code.CodeCacheProvider;
  48 import jdk.vm.ci.code.RegisterValue;
  49 import jdk.vm.ci.code.TargetDescription;
  50 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider;
  51 import jdk.vm.ci.meta.MetaAccessProvider;
  52 import jdk.vm.ci.meta.PlatformKind;
  53 import jdk.vm.ci.meta.Value;
  54 
  55 public class AArch64HotSpotForeignCallsProvider extends HotSpotHostForeignCallsProvider {
  56 
  57     private final Value[] nativeABICallerSaveRegisters;
  58 
  59     public AArch64HotSpotForeignCallsProvider(HotSpotJVMCIRuntimeProvider jvmciRuntime, HotSpotGraalRuntimeProvider runtime, MetaAccessProvider metaAccess, CodeCacheProvider codeCache,
  60                     WordTypes wordTypes, Value[] nativeABICallerSaveRegisters) {
  61         super(jvmciRuntime, runtime, metaAccess, codeCache, wordTypes);
  62         this.nativeABICallerSaveRegisters = nativeABICallerSaveRegisters;
  63     }
  64 
  65     @Override
  66     public void initialize(HotSpotProviders providers) {
  67         GraalHotSpotVMConfig config = runtime.getVMConfig();
  68         TargetDescription target = providers.getCodeCache().getTarget();
  69         PlatformKind word = target.arch.getWordKind();
  70 
  71         // The calling convention for the exception handler stub is (only?) defined in
  72         // TemplateInterpreterGenerator::generate_throw_exception()
  73         RegisterValue exception = r0.asValue(LIRKind.reference(word));
  74         RegisterValue exceptionPc = r3.asValue(LIRKind.value(word));
  75         CallingConvention exceptionCc = new CallingConvention(0, ILLEGAL, exception, exceptionPc);
  76         register(new HotSpotForeignCallLinkageImpl(HotSpotBackend.EXCEPTION_HANDLER, 0L, PRESERVES_REGISTERS, LEAF, exceptionCc, null, NOT_REEXECUTABLE, any()));
  77         register(new HotSpotForeignCallLinkageImpl(HotSpotBackend.EXCEPTION_HANDLER_IN_CALLER, JUMP_ADDRESS, PRESERVES_REGISTERS, LEAF, exceptionCc, null, NOT_REEXECUTABLE, any()));
  78 
  79         if (PreferGraalStubs.getValue()) {
  80             throw GraalError.unimplemented("PreferGraalStubs");
  81         }
  82 
  83         // These stubs do callee saving
  84         if (config.useCRC32Intrinsics) {
  85             registerForeignCall(UPDATE_BYTES_CRC32, config.updateBytesCRC32Stub, NativeCall, PRESERVES_REGISTERS, LEAF, NOT_REEXECUTABLE, any());
  86         }
  87 
  88         super.initialize(providers);
  89     }
  90 
  91     @Override
  92     public Value[] getNativeABICallerSaveRegisters() {
  93         return nativeABICallerSaveRegisters;
  94     }
  95 
  96 }