/*
 * Copyright (c) 1997, 2023, 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 SHARE_INTERPRETER_TEMPLATEINTERPRETERGENERATOR_HPP
#define SHARE_INTERPRETER_TEMPLATEINTERPRETERGENERATOR_HPP

// This file contains the platform-independent parts
// of the template interpreter generator.

#ifndef ZERO

class TemplateInterpreterGenerator: public AbstractInterpreterGenerator {
 protected:

  // entry points for shared code sequence
  address _unimplemented_bytecode;
  address _illegal_bytecode_sequence;

  // shared code sequences
  // Converter for native abi result to tosca result
  address generate_result_handler_for(BasicType type);
  address generate_slow_signature_handler();
  address generate_error_exit(const char* msg);
  address generate_StackOverflowError_handler();
  address generate_exception_handler(const char* name, const char* message) {
    return generate_exception_handler_common(name, message, false);
  }
  address generate_klass_exception_handler(const char* name) {
    return generate_exception_handler_common(name, nullptr, true);
  }
  address generate_exception_handler_common(const char* name, const char* message, bool pass_oop);
  address generate_ClassCastException_handler();
  address generate_ArrayIndexOutOfBounds_handler();
  address generate_return_entry_for(TosState state, int step, size_t index_size);
  address generate_earlyret_entry_for(TosState state);
  address generate_deopt_entry_for(TosState state, int step, address continuation = nullptr);
  address generate_safept_entry_for(TosState state, address runtime_entry);
  void    generate_throw_exception();

  void lock_method();

  void bang_stack_shadow_pages(bool native_call);

  // Instruction generation
  void generate_and_dispatch (Template* t, TosState tos_out = ilgl);
  void set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep);
  void set_short_entry_points(Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep);
  void set_wide_entry_point  (Template* t, address& wep);

  void set_entry_points(Bytecodes::Code code);
  void set_unimplemented(int i);
  void set_entry_points_for_all_bytes();
  void set_safepoints_for_all_bytes();

  // Helpers for generate_and_dispatch
  address generate_trace_code(TosState state)   PRODUCT_RETURN0;
  void count_bytecode()                         PRODUCT_RETURN;
  void histogram_bytecode(Template* t)          PRODUCT_RETURN;
  void histogram_bytecode_pair(Template* t)     PRODUCT_RETURN;
  void trace_bytecode(Template* t)              PRODUCT_RETURN;
  void stop_interpreter_at()                    PRODUCT_RETURN;

  void generate_all();

  // entry point generator
  address generate_method_entry(AbstractInterpreter::MethodKind kind, bool native);

  // generate intrinsic method entries
  address generate_intrinsic_entry(AbstractInterpreter::MethodKind kind);

  address generate_normal_entry(bool synchronized);
  address generate_native_entry(bool synchronized);
  address generate_abstract_entry(void);
  address generate_math_entry(AbstractInterpreter::MethodKind kind);
  address generate_Reference_get_entry();
  address generate_CRC32_update_entry();
  address generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind);
  address generate_CRC32C_updateBytes_entry(AbstractInterpreter::MethodKind kind);
  address generate_currentThread();
  address generate_Float_intBitsToFloat_entry();
  address generate_Float_floatToRawIntBits_entry();
  address generate_Double_longBitsToDouble_entry();
  address generate_Double_doubleToRawLongBits_entry();
  address generate_Float_float16ToFloat_entry();
  address generate_Float_floatToFloat16_entry();

  // Some platforms don't need registers, other need two. Unused function is
  // left unimplemented.
  void generate_stack_overflow_check(void);
  void generate_stack_overflow_check(Register Rframe_size, Register Rscratch);

  void generate_counter_incr(Label* overflow);
  void generate_counter_overflow(Label& continue_entry);

  void generate_fixed_frame(bool native_call);

#ifdef AARCH64
  void generate_transcendental_entry(AbstractInterpreter::MethodKind kind, int fpargs);
#endif // AARCH64

#ifdef ARM32
  void generate_math_runtime_call(AbstractInterpreter::MethodKind kind);
#endif // ARM32

#ifdef PPC
  void lock_method(Register Rflags, Register Rscratch1, Register Rscratch2, bool flags_preloaded=false);
  void generate_fixed_frame(bool native_call, Register Rsize_of_parameters, Register Rsize_of_locals);
#endif // PPC

 public:
  TemplateInterpreterGenerator();
};

#endif // !ZERO

#endif // SHARE_INTERPRETER_TEMPLATEINTERPRETERGENERATOR_HPP