1 /*
   2  * Copyright (c) 2017, 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_VM_GC_G1_G1BSCODEGEN_AARCH64_HPP
  26 #define CPU_AARCH64_VM_GC_G1_G1BSCODEGEN_AARCH64_HPP
  27 
  28 #include "asm/macroAssembler.hpp"
  29 #include "gc/shared/modRefBSCodeGen.hpp"
  30 
  31 class LIR_Assembler;
  32 class StubAssembler;
  33 class G1PreBarrierStub;
  34 class G1PostBarrierStub;
  35 
  36 class G1BSCodeGen: public ModRefBSCodeGen {
  37 protected:
  38   void gen_write_ref_array_pre_barrier(MacroAssembler* masm, DecoratorSet decorators,
  39                                        Register addr, Register count, RegSet saved_regs);
  40   void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
  41                                         Register start, Register end, Register tmp, RegSet saved_regs);
  42 
  43   void g1_write_barrier_pre(MacroAssembler* masm,
  44                             Register obj,
  45                             Register pre_val,
  46                             Register thread,
  47                             Register tmp,
  48                             bool tosca_live,
  49                             bool expand_call);
  50   
  51   void g1_write_barrier_post(MacroAssembler* masm,
  52                              Register store_addr,
  53                              Register new_val,
  54                              Register thread,
  55                              Register tmp,
  56                              Register tmp2);
  57 
  58   virtual void oop_store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  59                             Address dst, Register val, Register tmp1, Register tmp2);
  60 
  61 public:
  62   void gen_g1_pre_barrier_stub(LIR_Assembler* ce, G1PreBarrierStub* stub);
  63   void gen_g1_post_barrier_stub(LIR_Assembler* ce, G1PostBarrierStub* stub);
  64 
  65   void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
  66   void generate_c1_post_barrier_runtime_stub(StubAssembler* sasm);
  67 
  68   void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  69                Register dst, Address src, Register tmp1, Register tmp_thread);
  70 };
  71 
  72 #endif // CPU_AARCH64_VM_GC_G1_G1BSCODEGEN_AARCH64_HPP