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_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP
  26 #define CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP
  27 
  28 #include "asm/macroAssembler.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "oops/access.hpp"
  31 
  32 class BarrierSetAssembler: public CHeapObj<mtGC> {
  33 private:
  34   void incr_allocated_bytes(MacroAssembler* masm,
  35                             Register var_size_in_bytes, int con_size_in_bytes,
  36                             Register t1 = noreg);
  37 
  38 public:
  39   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
  40                                   Register addr, Register count, RegSet saved_regs) {}
  41   virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
  42                                   Register start, Register end, Register tmp, RegSet saved_regs) {}
  43   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  44                        Register dst, Address src, Register tmp1, Register tmp_thread);
  45   virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  46                         Address dst, Register val, Register tmp1, Register tmp2);
  47 
  48   virtual void obj_equals(MacroAssembler* masm,
  49                           Register obj1, Register obj2);
  50 
  51   virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
  52                                              Register obj, Register tmp, Label& slowpath);
  53 
  54   virtual void tlab_allocate(MacroAssembler* masm,
  55     Register obj,                      // result: pointer to object after successful allocation
  56     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
  57     int      con_size_in_bytes,        // object size in bytes if   known at compile time
  58     Register t1,                       // temp register
  59     Register t2,                       // temp register
  60     Label&   slow_case                 // continuation point if fast allocation fails
  61   );
  62 
  63   void eden_allocate(MacroAssembler* masm,
  64     Register obj,                      // result: pointer to object after successful allocation
  65     Register var_size_in_bytes,        // object size in bytes if unknown at compile time; invalid otherwise
  66     int      con_size_in_bytes,        // object size in bytes if   known at compile time
  67     Register t1,                       // temp register
  68     Label&   slow_case                 // continuation point if fast allocation fails
  69   );
  70 
  71   virtual void resolve_for_read(MacroAssembler* masm, DecoratorSet decorators, Register obj);
  72   virtual void resolve_for_write(MacroAssembler* masm, DecoratorSet decorators, Register obj);
  73 
  74   virtual void barrier_stubs_init() {}
  75 };
  76 
  77 #endif // CPU_AARCH64_GC_SHARED_BARRIERSETASSEMBLER_AARCH64_HPP