jdk8-mips64-public/hotspot: src/cpu/mips/vm/vm_version

#7569 update copyright time of files modified in 2017 and 2018
Reviewed-by: aoqi

     1 /*

     2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright (c) 2015, 2017, Loongson Technology. 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  */

    26 #ifndef CPU_MIPS_VM_VM_VERSION_MIPS_HPP

    27 #define CPU_MIPS_VM_VM_VERSION_MIPS_HPP

    29 #include "runtime/globals_extension.hpp"

    30 #include "runtime/vm_version.hpp"

    33 class VM_Version: public Abstract_VM_Version {

    34 protected:

    35   enum Feature_Flag {

    36     with_l2_cache   = 0,

    37     spt_16k_page    = 1,

    38     gs464v          = 2,

    39     gs464e          = 3,

    40     gs464           = 4,

    41     gs264           = 5,

    42     with_gs_support = 6,

    43      //////////////////////add some other feature here//////////////////

    44   };

    46   enum Feature_Flag_Set {

    47     unknown_m         = 0,

    48     all_features_m    = -1,

    49     with_l2_cache_m   = 1 << with_l2_cache,

    50     spt_16k_page_m    = 1 << spt_16k_page,

    51     with_gs_support_m = 1 << with_gs_support,

    52     gs464_m           = 1 << gs464,

    53     gs464v_m          = 1 << gs464v,

    54     gs464e_m          = 1 << gs464e,

    55     gs264_m           = 1 << gs264,

    57     //////////////////////add some other feature here//////////////////

    58   };

    60   static int  _features;

    61   static const char* _features_str;

    63   static void print_features();

    64   static int  determine_features();

    65   static int  platform_features(int features);

    67 public:

    68   // Initialization

    69   static void initialize();

    71   //mips has no such instructions, use ll/sc instead

    72   static bool supports_compare_and_exchange() { return false; }

    74   static bool has_l2_cache() { return _features & with_l2_cache_m; }

    75   static bool has_16k_page() { return _features & spt_16k_page_m; }

    76   static bool is_gs264()     { return _features & gs264_m; }

    77   static bool is_gs464()     { return _features & gs464_m; }

    78   static bool is_gs464v()    { return _features & gs464v_m; }

    79   static bool is_gs464e()    { return _features & gs464e_m; }

    80   static bool is_loongson()  { return _features & with_gs_support_m; }

    81   static bool supports_dsp() { return 0; /*Loongson CPUs do not support DSP instructions well*/}

    82   static bool supports_ps()  { return 1; /*Loongson CPUs support ps instructions*/}

    83   static bool supports_3d()  { return 0; /*Loongson CPUs do not support 3d instructions*/}

    85   //////////////////////add some other feature here//////////////////

    87   static const char* cpu_features() { return _features_str; }

    89   // Assembler testing

    90   static void allow_all();

    91   static void revert();

    92 };

    94 #endif // CPU_MIPS_VM_VM_VERSION_MIPS_HPP

src/cpu/mips/vm/vm_version_mips.hpp@1ccc5a3b3671