text: /*
   * Copyright (c) 2018, 2020, 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 CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP
  #define CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP
  
  #include "asm/macroAssembler.hpp"
  #include "gc/shared/barrierSet.hpp"
  #include "gc/shared/barrierSetNMethod.hpp"
  #include "memory/allocation.hpp"
  #include "oops/access.hpp"
  
  class BarrierSetAssembler: public CHeapObj<mtGC> {
  private:
    void incr_allocated_bytes(MacroAssembler* masm,
                              Register var_size_in_bytes, int con_size_in_bytes,
                              Register t1 = noreg);
  
  public:
    virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
                                    Register src, Register dst, Register count, RegSet saved_regs) {}
    virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
                                    Register start, Register end, Register tmp, RegSet saved_regs) {}
    virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
                         Register dst, Address src, Register tmp1, Register tmp_thread);
    virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
                          Address dst, Register val, Register tmp1, Register tmp2);
  
    virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
                                               Register obj, Register tmp, Label& slowpath);
  
    virtual void tlab_allocate(MacroAssembler* masm,
      Register obj,                      // result: pointer to object after successful allocation
      Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
      int      con_size_in_bytes,        // object size in bytes if   known at compile time
      Register t1,                       // temp register
      Register t2,                       // temp register
      Label&   slow_case                 // continuation point if fast allocation fails
    );
  
    void eden_allocate(MacroAssembler* masm,
      Register obj,                      // result: pointer to object after successful allocation
      Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
      int      con_size_in_bytes,        // object size in bytes if   known at compile time
      Register t1,                       // temp register
      Label&   slow_case                 // continuation point if fast allocation fails
    );
    virtual void barrier_stubs_init() {}
  
    virtual void nmethod_entry_barrier(MacroAssembler* masm);
    virtual void c2i_entry_barrier(MacroAssembler* masm);
  
  };
  
  #endif // CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP
  