/*

 * Copyright (c) 2011, 2019, 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_JVMCI_JVMCICODEINSTALLER_HPP

#define SHARE_JVMCI_JVMCICODEINSTALLER_HPP

#include "jvmci/jvmciEnv.hpp"

#if INCLUDE_AOT

class RelocBuffer : public StackObj {

  enum { stack_size = 1024 };

public:

  RelocBuffer() : _size(0), _buffer(0) {}

  ~RelocBuffer();

  void ensure_size(size_t bytes);

  void set_size(size_t bytes);

  address begin() const;

  size_t size() const { return _size; }

private:

  size_t _size;

  char _static_buffer[stack_size];

  char *_buffer;

};

class AOTOopRecorder : public OopRecorder {

public:

  virtual int find_index(Metadata* h);

  virtual int find_index(jobject h);

  int nr_meta_refs() const;

  jobject meta_element(int pos) const;

private:

  void record_meta_ref(jobject ref, int index);

  GrowableArray<jobject>* _meta_refs;

};

class CodeMetadata {

public:

  CodeMetadata() {}

  CodeBlob* get_code_blob() const { return _cb; }

  PcDesc* get_pc_desc() const { return _pc_desc; }

  int get_nr_pc_desc() const { return _nr_pc_desc; }

  u_char* get_scopes_desc() const { return _scopes_desc; }

  int get_scopes_size() const { return _nr_scopes_desc; }

  RelocBuffer* get_reloc_buffer() { return &_reloc_buffer; }

  AOTOopRecorder* get_oop_recorder() { return _oop_recorder; }

  ExceptionHandlerTable* get_exception_table() { return _exception_table; }

  void set_pc_desc(PcDesc* desc, int count) {

    _pc_desc = desc;

    _nr_pc_desc = count;

  }

  void set_scopes(u_char* scopes, int size) {

    _scopes_desc = scopes;

    _nr_scopes_desc = size;

  }

  void set_oop_recorder(AOTOopRecorder* recorder) {

    _oop_recorder = recorder;

  }

  void set_exception_table(ExceptionHandlerTable* table) {

    _exception_table = table;

  }

private:

  CodeBlob* _cb;

  PcDesc* _pc_desc;

  int _nr_pc_desc;

  u_char* _scopes_desc;

  int _nr_scopes_desc;

  RelocBuffer _reloc_buffer;

  AOTOopRecorder* _oop_recorder;

  ExceptionHandlerTable* _exception_table;

};

/*

 * This class handles the conversion from a InstalledCode to a CodeBlob or an nmethod.

 */

class CodeInstaller : public StackObj {

  friend class JVMCIVMStructs;

private:

  enum MarkId {

    VERIFIED_ENTRY                         = 1,

    UNVERIFIED_ENTRY                       = 2,

    OSR_ENTRY                              = 3,

    EXCEPTION_HANDLER_ENTRY                = 4,

    DEOPT_HANDLER_ENTRY                    = 5,

    INVOKEINTERFACE                        = 6,

    INVOKEVIRTUAL                          = 7,

    INVOKESTATIC                           = 8,

    INVOKESPECIAL                          = 9,

    INLINE_INVOKE                          = 10,

    POLL_NEAR                              = 11,

    POLL_RETURN_NEAR                       = 12,

    POLL_FAR                               = 13,

    POLL_RETURN_FAR                        = 14,

    CARD_TABLE_ADDRESS                     = 15,

    CARD_TABLE_SHIFT                       = 16,

    HEAP_TOP_ADDRESS                       = 17,

    HEAP_END_ADDRESS                       = 18,

    NARROW_KLASS_BASE_ADDRESS              = 19,

    NARROW_OOP_BASE_ADDRESS                = 20,

    CRC_TABLE_ADDRESS                      = 21,

    LOG_OF_HEAP_REGION_GRAIN_BYTES         = 22,

    INLINE_CONTIGUOUS_ALLOCATION_SUPPORTED = 23,

    INVOKE_INVALID                         = -1

  };

  Arena         _arena;

  CodeOffsets   _offsets;

  jint          _code_size;

  jint          _total_frame_size;

  jint          _orig_pc_offset;

  jint          _parameter_count;

  jint          _constants_size;

  bool          _has_wide_vector;

  MarkId        _next_call_type;

  address       _invoke_mark_pc;

  CodeSection*  _instructions;

  CodeSection*  _constants;

  OopRecorder*              _oop_recorder;

  DebugInformationRecorder* _debug_recorder;

  Dependencies*             _dependencies;

  ExceptionHandlerTable     _exception_handler_table;

  bool _immutable_pic_compilation;  // Installer is called for Immutable PIC compilation.

  static ConstantOopWriteValue* _oop_null_scope_value;

  static ConstantIntValue*    _int_m1_scope_value;

  static ConstantIntValue*    _int_0_scope_value;

  static ConstantIntValue*    _int_1_scope_value;

  static ConstantIntValue*    _int_2_scope_value;

  static LocationValue*       _illegal_value;

#ifndef PRODUCT

#endif

public:

#if INCLUDE_AOT

#endif

  static address runtime_call_target_address(oop runtime_call);

  static bool is_general_purpose_reg(VMReg hotspotRegister);

  const OopMapSet* oopMapSet() const { return _debug_recorder->_oopmaps; }

protected:

#ifdef _LP64

#endif

  // extract the fields of the HotSpotCompiledCode

  // perform data and call relocation on the CodeBuffer

  /**

   * Specifies the level of detail to record for a scope.

   */

  enum ScopeMode {

    // Only record a method and BCI

    BytecodePosition,

    // Record a method, bci and JVM frame state

    FullFrame

  };

  int map_jvmci_bci(int bci);

  }

  int estimateStubSpace(int static_call_stubs);

};

#endif // SHARE_JVMCI_JVMCICODEINSTALLER_HPP