/*

 * Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2012, 2017, SAP SE. 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

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 */

#ifndef CPU_PPC_VM_STUBROUTINES_PPC_HPP

#define CPU_PPC_VM_STUBROUTINES_PPC_HPP

// This file holds the platform specific parts of the StubRoutines

// definition. See stubRoutines.hpp for a description on how to

// extend it.

static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }

enum platform_dependent_constants {

  code_size1 = 20000,          // simply increase if too small (assembler will crash if too small)

  code_size2 = 20000           // simply increase if too small (assembler will crash if too small)

};

// CRC32 Intrinsics.

#define CRC32_COLUMN_SIZE 256

#define CRC32_BYFOUR

#ifdef  CRC32_BYFOUR

  #define CRC32_TABLES 8

#else

  #define CRC32_TABLES 1

#endif

#define CRC32_CONSTANTS_SIZE 1084

#define CRC32_BARRET_CONSTANTS 10

class ppc64 {

 friend class StubGenerator;

 private:

  // CRC32 Intrinsics.

  static juint _crc_table[CRC32_TABLES][CRC32_COLUMN_SIZE];

  static juint _crc32c_table[CRC32_TABLES][CRC32_COLUMN_SIZE];

  static juint* _constants;

  static juint* _barret_constants;

 public:

  // CRC32 Intrinsics.

  static void generate_load_table_addr(MacroAssembler* masm, Register table, address table_addr, uint64_t table_contents);

  static void generate_load_crc_table_addr(MacroAssembler* masm, Register table);

  static void generate_load_crc32c_table_addr(MacroAssembler* masm, Register table);

  static void generate_load_crc_constants_addr(MacroAssembler* masm, Register table);

  static void generate_load_crc_barret_constants_addr(MacroAssembler* masm, Register table);

  static juint* generate_crc_constants();

  static juint* generate_crc_barret_constants();

};

#endif // CPU_PPC_VM_STUBROUTINES_PPC_HPP