src/hotspot/cpu/x86/gc/z/zBarrierSetAssembler_x86.hpp
author pliden
Tue, 12 Jun 2018 17:40:28 +0200
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8204210: Implementation: JEP 333: ZGC: A Scalable Low-Latency Garbage Collector (Experimental) Reviewed-by: pliden, stefank, eosterlund, ehelin, sjohanss, rbackman, coleenp, ihse, jgeorge, lmesnik, rkennke Contributed-by: per.liden@oracle.com, stefan.karlsson@oracle.com, erik.osterlund@oracle.com, mikael.gerdin@oracle.com, kim.barrett@oracle.com, nils.eliasson@oracle.com, rickard.backman@oracle.com, rwestrel@redhat.com, coleen.phillimore@oracle.com, robbin.ehn@oracle.com, gerard.ziemski@oracle.com, hugh.wilkinson@intel.com, sandhya.viswanathan@intel.com, bill.npo.wheeler@intel.com, vinay.k.awasthi@intel.com, yasuenag@gmail.com
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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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#ifndef CPU_X86_GC_Z_ZBARRIERSETASSEMBLER_X86_HPP
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#define CPU_X86_GC_Z_ZBARRIERSETASSEMBLER_X86_HPP
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#ifdef COMPILER1
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class LIR_Assembler;
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class LIR_OprDesc;
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typedef LIR_OprDesc* LIR_Opr;
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class StubAssembler;
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class ZLoadBarrierStubC1;
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#endif // COMPILER1
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class ZBarrierSetAssembler : public ZBarrierSetAssemblerBase {
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  address _load_barrier_slow_stub[RegisterImpl::number_of_registers];
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  address _load_barrier_weak_slow_stub[RegisterImpl::number_of_registers];
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public:
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  ZBarrierSetAssembler() :
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    _load_barrier_slow_stub(),
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    _load_barrier_weak_slow_stub() {}
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  address load_barrier_slow_stub(Register reg) { return _load_barrier_slow_stub[reg->encoding()]; }
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  address load_barrier_weak_slow_stub(Register reg) { return _load_barrier_weak_slow_stub[reg->encoding()]; }
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  virtual void load_at(MacroAssembler* masm,
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                       DecoratorSet decorators,
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                       BasicType type,
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                       Register dst,
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                       Address src,
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                       Register tmp1,
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                       Register tmp_thread);
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#ifdef ASSERT
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  virtual void store_at(MacroAssembler* masm,
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                        DecoratorSet decorators,
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                        BasicType type,
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                        Address dst,
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                        Register src,
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                        Register tmp1,
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                        Register tmp2);
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#endif // ASSERT
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  virtual void arraycopy_prologue(MacroAssembler* masm,
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                                  DecoratorSet decorators,
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                                  BasicType type,
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                                  Register src,
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                                  Register dst,
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                                  Register count);
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  virtual void try_resolve_jobject_in_native(MacroAssembler* masm,
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                                             Register jni_env,
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                                             Register obj,
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                                             Register tmp,
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                                             Label& slowpath);
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#ifdef COMPILER1
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  void generate_c1_load_barrier_test(LIR_Assembler* ce,
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                                     LIR_Opr ref) const;
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  void generate_c1_load_barrier_stub(LIR_Assembler* ce,
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                                     ZLoadBarrierStubC1* stub) const;
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  void generate_c1_load_barrier_runtime_stub(StubAssembler* sasm,
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                                             DecoratorSet decorators) const;
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#endif // COMPILER1
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  virtual void barrier_stubs_init();
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};
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#endif // CPU_X86_GC_Z_ZBARRIERSETASSEMBLER_X86_HPP