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

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

    39 	 };

    41 	 enum Feature_Flag_Set {

    42 		 unknown_m	  = 0,

    43 		 all_features_m	  = -1,

    44 		 with_l2_cache_m  = 1 << with_l2_cache,

    45 		 spt_16k_page_m   = 1 << spt_16k_page,

    47 		 //////////////////////add some other feature here//////////////////

    48 	 };

    50 	static int  _features;

    51 	static const char* _features_str;

    53 	static void print_features();

    54 	static int  determine_features();

    56 public:

    57 	// Initialization

    58 	static void initialize();

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

    61 	static bool supports_compare_and_exchange() { return false; }

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

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

    66 	//////////////////////add some other feature here//////////////////

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

    70 	// Assembler testing

    71 	static void allow_all();

    72 	static void revert();

    73 };

    75 #endif // CPU_MIPS_VM_VM_VERSION_MIPS_HPP

src/cpu/mips/vm/vm_version_mips.hpp@2d8a650513c2