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 * version 2 for more details (a copy is included in the LICENSE file that
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#ifndef CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP
#define CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP

#include "asm/macroAssembler.hpp"
#include "gc/shared/barrierSetAssembler.hpp"
#include "gc/shenandoah/shenandoahBarrierSet.hpp"

#ifdef COMPILER1

class LIR_Assembler;
class ShenandoahKeepaliveBarrierStub;
class ShenandoahLoadReferenceBarrierStub;
class StubAssembler;

#endif

#ifdef COMPILER2

class MachNode;

#endif

class StubCodeGenerator;

class ShenandoahBarrierSetAssembler: public BarrierSetAssembler {
private:

  /* ==== Actual barrier implementations ==== */
  void satb_barrier_impl(MacroAssembler* masm, DecoratorSet decorators,
                         Register base, RegisterOrConstant ind_or_offs,
                         Register pre_val,
                         Register tmp1, Register tmp2,
                         MacroAssembler::PreservationLevel preservation_level,
                         int extra_stack_space = 0);

  void card_barrier(MacroAssembler* masm,
                    Register base, RegisterOrConstant ind_or_offs,
                    Register tmp);

  void load_reference_barrier_impl(MacroAssembler* masm, DecoratorSet decorators,
                                   Register base, RegisterOrConstant ind_or_offs,
                                   Register dst,
                                   Register tmp1, Register tmp2,
                                   MacroAssembler::PreservationLevel preservation_level,
                                   int extra_stack_space = 0);

  /* ==== Helper methods for barrier implementations ==== */
  void gen_write_ref_array_post_barrier(MacroAssembler* masm, DecoratorSet decorators,
                                        Register addr, Register count,
                                        Register preserve);

public:
  virtual NMethodPatchingType nmethod_patching_type() { return NMethodPatchingType::conc_instruction_and_data_patch; }

  /* ==== C1 stubs ==== */
#ifdef COMPILER1
  void keepalive_barrier_c1_stub(LIR_Assembler* ce, ShenandoahKeepaliveBarrierStub* stub);
  void keepalive_barrier_c1_runtime_stub(StubAssembler* sasm);

  void load_reference_barrier_c1_stub(LIR_Assembler* ce, ShenandoahLoadReferenceBarrierStub* stub);
  void load_reference_barrier_c1_runtime_stub(StubAssembler* sasm, DecoratorSet decorators);
#endif

  /* ==== Available barriers (facades of the actual implementations) ==== */
  void satb_barrier(MacroAssembler* masm,
                    Register base, RegisterOrConstant ind_or_offs,
                    Register tmp1, Register tmp2, Register tmp3,
                    MacroAssembler::PreservationLevel preservation_level,
                    int extra_stack_space = 0);

  void load_reference_barrier(MacroAssembler* masm, DecoratorSet decorators,
                              Register base, RegisterOrConstant ind_or_offs,
                              Register dst,
                              Register tmp1, Register tmp2,
                              MacroAssembler::PreservationLevel preservation_level,
                              int extra_stack_space = 0);

  /* ==== Access api ==== */
  virtual void arraycopy_prologue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
                                  Register src, Register dst, Register count,
                                  Register preserve1, Register preserve2);
  virtual void arraycopy_epilogue(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
                                  Register dst, Register count,
                                  Register preserve);

  virtual void store_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
                        Register base, RegisterOrConstant ind_or_offs, Register val,
                        Register tmp1, Register tmp2, Register tmp3,
                        MacroAssembler::PreservationLevel preservation_level);

  virtual void load_at(MacroAssembler* masm, DecoratorSet decorators, BasicType type,
                       Register base, RegisterOrConstant ind_or_offs, Register dst,
                       Register tmp1, Register tmp2,
                       MacroAssembler::PreservationLevel preservation_level, Label* L_handle_null = nullptr);

  virtual void try_resolve_jobject_in_native(MacroAssembler* masm, Register dst, Register jni_env,
                                             Register obj, Register tmp, Label& slowpath);

  virtual void try_peek_weak_handle_in_nmethod(MacroAssembler* masm, Register weak_handle, Register obj,
                                               Register tmp, Label& slow_path);

  virtual void check_oop(MacroAssembler *masm, Register obj, const char* msg);

#ifdef COMPILER2
  // Entry points from Matcher
  void load_c2(const MachNode* node, MacroAssembler* masm, Register dst, Register addr, int disp, Register tmp1, Register tmp2, bool narrow, bool acquire);

  void store_c2(const MachNode* node, MacroAssembler* masm,
                Register dst, int disp, bool dst_narrow, Register src, bool src_narrow, Register tmp1, Register tmp2, Register tmp3);

  void compare_and_set_c2(const MachNode* node, MacroAssembler* masm, Register res, Register addr, Register oldval,
                          Register newval, Register tmp1, Register tmp2, bool exchange, bool narrow, bool weak, bool acquire);

  void get_and_set_c2(const MachNode* node, MacroAssembler* masm,
                      Register preval, Register newval, Register addr, Register tmp1, Register tmp2);
#endif // COMPILER2
};

#endif // CPU_PPC_GC_SHENANDOAH_SHENANDOAHBARRIERSETASSEMBLER_PPC_HPP
