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

     1 /*

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

     3  * Copyright (c) 2015, 2016, 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      with_gs_support = 5,

    42      //////////////////////add some other feature here//////////////////

    43    };

    45    enum Feature_Flag_Set {

    46      unknown_m    = 0,

    47      all_features_m    = -1,

    48      with_l2_cache_m  = 1 << with_l2_cache,

    49      spt_16k_page_m   = 1 << spt_16k_page,

    50      with_gs_support_m = 1 << with_gs_support,

    51      gs464_m  = 1 << gs464,

    52      gs464v_m = 1 << gs464v,

    53      gs464e_m = 1 << gs464e,

    55      //////////////////////add some other feature here//////////////////

    56    };

    58   static int  _features;

    59   static const char* _features_str;

    61   static void print_features();

    62   static int  determine_features();

    63   static int  platform_features(int features);

    65 public:

    66   // Initialization

    67   static void initialize();

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

    70   static bool supports_compare_and_exchange() { return false; }

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

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

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

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

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

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

    78   static bool support_dsp()  { return _features & gs464e_m; }

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

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

    82   //////////////////////add some other feature here//////////////////

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

    86   // Assembler testing

    87   static void allow_all();

    88   static void revert();

    89 };

    91 #endif // CPU_MIPS_VM_VM_VERSION_MIPS_HPP

src/cpu/mips/vm/vm_version_mips.hpp@4bfb40d1e17a