src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.hpp
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8216989: CardTableBarrierSetAssembler::gen_write_ref_array_post_barrier() does not check for zero length on AARCH64 Reviewed-by: adinn
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/*
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 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#ifndef CPU_AARCH64_GC_G1_G1BARRIERSETASSEMBLER_AARCH64_HPP
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#define CPU_AARCH64_GC_G1_G1BARRIERSETASSEMBLER_AARCH64_HPP
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#include "asm/macroAssembler.hpp"
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#include "gc/shared/modRefBarrierSetAssembler.hpp"
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#include "utilities/macros.hpp"
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class LIR_Assembler;
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class StubAssembler;
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class G1PreBarrierStub;
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class G1PostBarrierStub;
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class G1BarrierSetAssembler: public ModRefBarrierSetAssembler {
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protected:
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  void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
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                                       Register addr, Register count, RegSet saved_regs);
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  void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
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                                        Register start, Register count, Register tmp, RegSet saved_regs);
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  void g1_write_barrier_pre(MacroAssembler* masm,
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                            Register obj,
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                            Register pre_val,
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                            Register thread,
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                            Register tmp,
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                            bool tosca_live,
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                            bool expand_call);
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  void g1_write_barrier_post(MacroAssembler* masm,
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                             Register store_addr,
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                             Register new_val,
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                             Register thread,
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                             Register tmp,
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                             Register tmp2);
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  virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
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                            Address dst, Register val, Register tmp1, Register tmp2);
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public:
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#ifdef COMPILER1
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  void gen_pre_barrier_stub(LIR_Assembler* ce, G1PreBarrierStub* stub);
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  void gen_post_barrier_stub(LIR_Assembler* ce, G1PostBarrierStub* stub);
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  void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
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  void generate_c1_post_barrier_runtime_stub(StubAssembler* sasm);
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#endif
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  void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
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               Register dst, Address src, Register tmp1, Register tmp_thread);
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};
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#endif // CPU_AARCH64_GC_G1_G1BARRIERSETASSEMBLER_AARCH64_HPP