1 /*

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

     3  * Copyright (c) 2012, 2017, SAP SE. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    25 

    26 #ifndef CPU_PPC_VM_STUBROUTINES_PPC_HPP

    27 #define CPU_PPC_VM_STUBROUTINES_PPC_HPP

    28 

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

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

    31 // extend it.

    32 

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

    34 

    35 enum platform_dependent_constants {

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

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

    38 };

    39 

    40 // CRC32 Intrinsics.

    41 #define CRC32_COLUMN_SIZE 256

    42 #define CRC32_BYFOUR

    43 #ifdef  CRC32_BYFOUR

    44   #define CRC32_TABLES 8

    45 #else

    46   #define CRC32_TABLES 1

    47 #endif

    48 #define CRC32_CONSTANTS_SIZE 1084

    49 #define CRC32_BARRET_CONSTANTS 10

    50 

    51 class ppc64 {

    52  friend class StubGenerator;

    53 

    54  private:

    55 

    56   // CRC32 Intrinsics.

    57   static juint _crc_table[CRC32_TABLES][CRC32_COLUMN_SIZE];

    58   static juint _crc32c_table[CRC32_TABLES][CRC32_COLUMN_SIZE];

    59   static juint* _constants;

    60   static juint* _barret_constants;

    61 

    62  public:

    63 

    64   // CRC32 Intrinsics.

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

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

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

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

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

    70   static juint* generate_crc_constants();

    71   static juint* generate_crc_barret_constants();

    72 

    73 };

    74 

    75 #endif // CPU_PPC_VM_STUBROUTINES_PPC_HPP