src/hotspot/share/gc/z/c1/zBarrierSetC1.hpp
changeset 50525 767cdb97f103
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50524:04f4e983c2f7 50525:767cdb97f103
       
     1 /*
       
     2  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
       
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4  *
       
     5  * This code is free software; you can redistribute it and/or modify it
       
     6  * under the terms of the GNU General Public License version 2 only, as
       
     7  * published by the Free Software Foundation.
       
     8  *
       
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    12  * version 2 for more details (a copy is included in the LICENSE file that
       
    13  * accompanied this code).
       
    14  *
       
    15  * You should have received a copy of the GNU General Public License version
       
    16  * 2 along with this work; if not, write to the Free Software Foundation,
       
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    18  *
       
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
       
    20  * or visit www.oracle.com if you need additional information or have any
       
    21  * questions.
       
    22  */
       
    23 
       
    24 #ifndef SHARE_GC_Z_C1_ZBARRIERSETC1_HPP
       
    25 #define SHARE_GC_Z_C1_ZBARRIERSETC1_HPP
       
    26 
       
    27 #include "c1/c1_CodeStubs.hpp"
       
    28 #include "c1/c1_IR.hpp"
       
    29 #include "c1/c1_LIR.hpp"
       
    30 #include "gc/shared/c1/barrierSetC1.hpp"
       
    31 #include "oops/accessDecorators.hpp"
       
    32 
       
    33 class ZLoadBarrierStubC1 : public CodeStub {
       
    34 private:
       
    35   DecoratorSet  _decorators;
       
    36   LIR_Opr       _ref_addr;
       
    37   LIR_Opr       _ref;
       
    38   LIR_Opr       _tmp;
       
    39   CodeEmitInfo* _patch_info;
       
    40   address       _runtime_stub;
       
    41 
       
    42 public:
       
    43   ZLoadBarrierStubC1(LIRAccess& access, LIR_Opr ref, address runtime_stub);
       
    44 
       
    45   DecoratorSet decorators() const;
       
    46   LIR_Opr ref() const;
       
    47   LIR_Opr ref_addr() const;
       
    48   LIR_Opr tmp() const;
       
    49   LIR_PatchCode patch_code() const;
       
    50   CodeEmitInfo*& patch_info();
       
    51   address runtime_stub() const;
       
    52 
       
    53   virtual void emit_code(LIR_Assembler* ce);
       
    54   virtual void visit(LIR_OpVisitState* visitor);
       
    55 
       
    56 #ifndef PRODUCT
       
    57   virtual void print_name(outputStream* out) const;
       
    58 #endif // PRODUCT
       
    59 };
       
    60 
       
    61 class ZBarrierSetC1 : public BarrierSetC1 {
       
    62 private:
       
    63   address _load_barrier_on_oop_field_preloaded_runtime_stub;
       
    64   address _load_barrier_on_weak_oop_field_preloaded_runtime_stub;
       
    65 
       
    66   address load_barrier_on_oop_field_preloaded_runtime_stub(DecoratorSet decorators) const;
       
    67   void load_barrier(LIRAccess& access, LIR_Opr result) const;
       
    68 
       
    69 protected:
       
    70   virtual void load_at_resolved(LIRAccess& access, LIR_Opr result);
       
    71   virtual LIR_Opr atomic_xchg_at_resolved(LIRAccess& access, LIRItem& value);
       
    72   virtual LIR_Opr atomic_cmpxchg_at_resolved(LIRAccess& access, LIRItem& cmp_value, LIRItem& new_value);
       
    73 
       
    74 public:
       
    75   ZBarrierSetC1();
       
    76 
       
    77   virtual void generate_c1_runtime_stubs(BufferBlob* blob);
       
    78 };
       
    79 
       
    80 #endif // SHARE_GC_Z_C1_ZBARRIERSETC1_HPP