/*

 * Copyright (c) 2015, 2018, 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.

 */

#ifndef SHARE_GC_Z_C1_ZBARRIERSETC1_HPP

#define SHARE_GC_Z_C1_ZBARRIERSETC1_HPP

#include "c1/c1_CodeStubs.hpp"

#include "c1/c1_IR.hpp"

#include "c1/c1_LIR.hpp"

#include "gc/shared/c1/barrierSetC1.hpp"

#include "oops/accessDecorators.hpp"

class ZLoadBarrierStubC1 : public CodeStub {

private:

  DecoratorSet  _decorators;

  LIR_Opr       _ref_addr;

  LIR_Opr       _ref;

  LIR_Opr       _tmp;

  CodeEmitInfo* _patch_info;

  address       _runtime_stub;

public:

  ZLoadBarrierStubC1(LIRAccess& access, LIR_Opr ref, address runtime_stub);

  DecoratorSet decorators() const;

  LIR_Opr ref() const;

  LIR_Opr ref_addr() const;

  LIR_Opr tmp() const;

  LIR_PatchCode patch_code() const;

  CodeEmitInfo*& patch_info();

  address runtime_stub() const;

  virtual void emit_code(LIR_Assembler* ce);

  virtual void visit(LIR_OpVisitState* visitor);

#ifndef PRODUCT

  virtual void print_name(outputStream* out) const;

#endif // PRODUCT

};

class ZBarrierSetC1 : public BarrierSetC1 {

private:

  address _load_barrier_on_oop_field_preloaded_runtime_stub;

  address _load_barrier_on_weak_oop_field_preloaded_runtime_stub;

  address load_barrier_on_oop_field_preloaded_runtime_stub(DecoratorSet decorators) const;

  void load_barrier(LIRAccess& access, LIR_Opr result) const;

protected:

  virtual void load_at_resolved(LIRAccess& access, LIR_Opr result);

  virtual LIR_Opr atomic_xchg_at_resolved(LIRAccess& access, LIRItem& value);

  virtual LIR_Opr atomic_cmpxchg_at_resolved(LIRAccess& access, LIRItem& cmp_value, LIRItem& new_value);

public:

  ZBarrierSetC1();

  virtual void generate_c1_runtime_stubs(BufferBlob* blob);

};

#endif // SHARE_GC_Z_C1_ZBARRIERSETC1_HPP