ConstantDataSnippet.hpp

/*******************************************************************************
 * Copyright IBM Corp. and others 2000
 *
 * 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 https://www.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
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 *******************************************************************************/

#ifndef ARM64CONSTANTDATASNIPPET_INCL
#define ARM64CONSTANTDATASNIPPET_INCL

#include "codegen/Snippet.hpp"

#include <stdint.h>
#include "infra/vector.hpp"
#include "runtime/Runtime.hpp"

namespace TR { class CodeGenerator; }
namespace TR { class Node; }

namespace TR {

/**
 * ConstantDataSnippet is used to hold constant data
 */
class ARM64ConstantDataSnippet : public TR::Snippet
   {
   public:

   ARM64ConstantDataSnippet(TR::CodeGenerator *cg, TR::Node *n, void *c, size_t size, TR_ExternalRelocationTargetKind reloType = TR_NoRelocation);

   virtual Kind                   getKind()                                { return IsConstantData; }
   uint8_t*                       getRawData()                             { return _data.data(); }
   virtual size_t                 getDataSize() const                      { return _data.size(); }
   virtual uint32_t               getLength(int32_t estimatedSnippetStart) { return getDataSize(); }
   template <typename T> inline T getData()                                { return *(reinterpret_cast<T*>(getRawData())); }

   virtual uint8_t*               emitSnippetBody();
   virtual void                   print(TR::FILE* pOutFile, TR_Debug* debug);
   void                           addMetaDataForCodeAddress(uint8_t *cursor);
   TR_ExternalRelocationTargetKind getReloType() { return _reloType; }
   void                           setReloType(TR_ExternalRelocationTargetKind reloType) { _reloType = reloType; }

   private:
   TR::vector<uint8_t>            _data;
   TR_ExternalRelocationTargetKind _reloType;
   };

}
#endif