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src/hotspot/cpu/x86/gc/shared/modRefBarrierSetAssembler_x86.hpp

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   1 /*
   2  * Copyright (c) 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 
  25 #ifndef CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
  26 #define CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
  27 
  28 #include "asm/macroAssembler.hpp"
  29 #include "gc/shared/barrierSetAssembler.hpp"
  30 
  31 // The ModRefBarrierSetAssembler filters away accesses on BasicTypes other
  32 // than T_OBJECT/T_ARRAY (oops). The oop accesses call one of the protected
  33 // accesses, which are overridden in the concrete BarrierSetAssembler.
  34 
  35 class ModRefBarrierSetAssembler: public BarrierSetAssembler {
  36 protected:
  37   virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
  38                                                Register addr, Register count) {}
  39   virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
  40                                                 Register addr, Register count, Register tmp) {}
  41   virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  42                             Address dst, Register val, Register tmp1, Register tmp2) = 0;
  43 public:
  44   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  45                                   Register src, Register dst, Register count);
  46   virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  47                                   Register src, Register dst, Register count);
  48 
  49   virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  50                         Address dst, Register val, Register tmp1, Register tmp2);
  51 };
  52 
  53 #endif // CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
   1 /*
   2  * Copyright (c) 2018, 2019, 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 
  25 #ifndef CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
  26 #define CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
  27 
  28 #include "asm/macroAssembler.hpp"
  29 #include "gc/shared/barrierSetAssembler.hpp"
  30 
  31 // The ModRefBarrierSetAssembler filters away accesses on BasicTypes other
  32 // than T_OBJECT/T_ARRAY (oops). The oop accesses call one of the protected
  33 // accesses, which are overridden in the concrete BarrierSetAssembler.
  34 
  35 class ModRefBarrierSetAssembler: public BarrierSetAssembler {
  36 protected:
  37   virtual void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
  38                                                Register addr, Register count) {}
  39   virtual void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
  40                                                 Register addr, Register count, Register tmp) {}
  41   virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  42                             Address dst, Register val, Register tmp1, Register tmp2, Register tmp3) = 0;
  43 public:
  44   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  45                                   Register src, Register dst, Register count);
  46   virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  47                                   Register src, Register dst, Register count);
  48 
  49   virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  50                         Address dst, Register val, Register tmp1, Register tmp2, Register tmp3);
  51 };
  52 
  53 #endif // CPU_X86_GC_SHARED_MODREFBARRIERSETASSEMBLER_X86_HPP
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