rev 58062 : 8239081: Shenandoah: Consolidate C1 LRB and native barriers

   1 /*
   2  * Copyright (c) 2018, 2019, Red Hat, Inc. 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_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_AARCH64_HPP
  26 #define CPU_AARCH64_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_AARCH64_HPP
  27 
  28 #include "asm/macroAssembler.hpp"
  29 #include "gc/shared/barrierSetAssembler.hpp"
  30 #ifdef COMPILER1
  31 class LIR_Assembler;
  32 class ShenandoahPreBarrierStub;
  33 class ShenandoahLoadReferenceBarrierStub;
  34 class StubAssembler;
  35 #endif
  36 class StubCodeGenerator;
  37 
  38 class ShenandoahBarrierSetAssembler: public BarrierSetAssembler {
  39 private:
  40 
  41   static address _shenandoah_lrb;
  42 
  43   void satb_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   void shenandoah_write_barrier_pre(MacroAssembler* masm,
  51                                     Register obj,
  52                                     Register pre_val,
  53                                     Register thread,
  54                                     Register tmp,
  55                                     bool tosca_live,
  56                                     bool expand_call);
  57 
  58   void resolve_forward_pointer(MacroAssembler* masm, Register dst, Register tmp = noreg);
  59   void resolve_forward_pointer_not_null(MacroAssembler* masm, Register dst, Register tmp = noreg);
  60   void load_reference_barrier(MacroAssembler* masm, Register dst, Address load_addr);
  61   void load_reference_barrier_not_null(MacroAssembler* masm, Register dst, Address load_addr);
  62   void load_reference_barrier_native(MacroAssembler* masm, Register dst, Address load_addr);
  63 
  64   address generate_shenandoah_lrb(StubCodeGenerator* cgen);
  65 
  66 public:
  67   static address shenandoah_lrb();
  68 
  69   void storeval_barrier(MacroAssembler* masm, Register dst, Register tmp);
  70 
  71 #ifdef COMPILER1
  72   void gen_pre_barrier_stub(LIR_Assembler* ce, ShenandoahPreBarrierStub* stub);
  73   void gen_load_reference_barrier_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
  74   void generate_c1_pre_barrier_runtime_stub(StubAssembler* sasm);
  75   void generate_c1_load_reference_barrier_runtime_stub(StubAssembler* sasm, bool is_native);
  76 #endif
  77 
  78   virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, bool is_oop,
  79                                   Register src, Register dst, Register count, RegSet saved_regs);
  80   virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  81                        Register dst, Address src, Register tmp1, Register tmp_thread);
  82   virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
  83                         Address dst, Register val, Register tmp1, Register tmp2);
  84   virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
  85                                              Register obj, Register tmp, Label& slowpath);
  86   void cmpxchg_oop(MacroAssembler* masm, Register addr, Register expected, Register new_val,
  87                    bool acquire, bool release, bool weak, bool is_cae, Register result);
  88 
  89   virtual void barrier_stubs_init();
  90 };
  91 
  92 #endif // CPU_AARCH64_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_AARCH64_HPP
--- EOF ---