J9InstructionDelegate.hpp

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 * Copyright (c) 2019, 2020 IBM Corp. and others
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at http://eclipse.org/legal/epl-2.0
 * or the Apache License, Version 2.0 which accompanies this distribution
 * and is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception [1] and GNU General Public
 * License, version 2 with the OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
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 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
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#ifndef J9_ARM64_INSTRUCTIONDELEGATE_INCL
#define J9_ARM64_INSTRUCTIONDELEGATE_INCL

/*
 * The following #define and typedef must appear before any #includes in this file
 */
#ifndef J9_INSTRUCTIONDELEGATE_CONNECTOR
#define J9_INSTRUCTIONDELEGATE_CONNECTOR
namespace J9 { namespace ARM64 { class InstructionDelegate; } }
namespace J9 { typedef J9::ARM64::InstructionDelegate InstructionDelegateConnector; }
#else
#error J9::ARM64::InstructionDelegate expected to be a primary connector, but a J9 connector is already defined
#endif

#include "compiler/codegen/J9InstructionDelegate.hpp"
#include "infra/Annotations.hpp"

namespace TR { class ARM64ImmSymInstruction; }
namespace TR { class ARM64Trg1MemInstruction; }
namespace TR { class ARM64MemInstruction; }

namespace J9
{

namespace ARM64
{

class OMR_EXTENSIBLE InstructionDelegate : public J9::InstructionDelegate
   {
protected:

   InstructionDelegate() {}

public:

   /**
    * @brief Sets the return address to CallSnippet for Label target
    * @param[in] cg : CodeGenerator
    * @param[in] ins : instruction associated with CallSnippet
    * @param[in] cursor : instruction cursor
    */
   static void encodeBranchToLabel(TR::CodeGenerator *cg, TR::ARM64ImmSymInstruction *ins, uint8_t *cursor);

   /**
    * @brief Determines if this instruction will throw an implicit null pointer exception and sets appropriate flags
    * @param[in] cg    : CodeGenerator
    * @param[in] instr : instruction with memory reference
    */
   static void setupImplicitNullPointerException(TR::CodeGenerator *cg, TR::ARM64Trg1MemInstruction *instr);

   /**
    * @brief Determines if this instruction will throw an implicit null pointer exception and sets appropriate flags
    * @param[in] cg    : CodeGenerator
    * @param[in] instr : instruction with memory reference
    */
   static void setupImplicitNullPointerException(TR::CodeGenerator *cg, TR::ARM64MemInstruction *instr);

   };

}

}

#endif