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

     1 /*

     2  * Copyright (c) 1997, 2014, 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 #include "precompiled.hpp"

    27 #include "asm/macroAssembler.hpp"

    28 #include "asm/macroAssembler.inline.hpp"

    29 #include "memory/resourceArea.hpp"

    30 #include "runtime/java.hpp"

    31 #include "runtime/stubCodeGenerator.hpp"

    32 #include "vm_version_mips.hpp"

    33 #ifdef TARGET_OS_FAMILY_linux

    34 # include "os_linux.inline.hpp"

    35 #endif

    36 #ifdef TARGET_OS_FAMILY_solaris

    37 # include "os_solaris.inline.hpp"

    38 #endif

    39 #ifdef TARGET_OS_FAMILY_windows

    40 # include "os_windows.inline.hpp"

    41 #endif

    42 #ifdef TARGET_OS_FAMILY_bsd

    43 # include "os_bsd.inline.hpp"

    44 #endif

    45 /*

    46 int VM_Version::_cpu;

    47 int VM_Version::_model;

    48 int VM_Version::_stepping;

    49 int VM_Version::_cpuFeatures;

    50 const char*           VM_Version::_features_str = "";

    51 VM_Version::CpuidInfo VM_Version::_cpuid_info   = { 0, };

    53 static BufferBlob* stub_blob;

    54 static const int stub_size = 300;

    56 extern "C" {

    57   typedef void (*getPsrInfo_stub_t)(void*);

    58 }

    59 static getPsrInfo_stub_t getPsrInfo_stub = NULL;

    60 */

    61 int VM_Version::_features = VM_Version::unknown_m;

    62 const char* VM_Version::_features_str = "";

    63 /*

    64 class VM_Version_StubGenerator: public StubCodeGenerator {

    65  public:

    67   VM_Version_StubGenerator(CodeBuffer *c) : StubCodeGenerator(c) {}

    69   address generate_getPsrInfo() {

    70   };

    71 };

    74 void VM_Version::get_processor_features() {

    75 }

    76 */

    77 void VM_Version::initialize() {

    79   _features = determine_features();

    80   //no need, Abstract_VM_Version already define it as false

    81   _supports_cx8 = true;

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

    84 #ifdef COMPILER2

    85   if (MaxVectorSize > 0) {

    86     if (!is_power_of_2(MaxVectorSize)) {

    87       warning("MaxVectorSize must be a power of 2");

    88       MaxVectorSize = 8;

    89     }

    90     if (MaxVectorSize > 0 && supports_ps()) {

    91       MaxVectorSize = 8;

    92     }

    93   }

    95   if (is_gs464e()) {

    96     if (FLAG_IS_DEFAULT(UseCountTrailingZerosInstruction)) {

    97       FLAG_SET_DEFAULT(UseCountTrailingZerosInstruction, 1);

    98     }

    99   } else if (UseCountTrailingZerosInstruction) {

   100     if (!FLAG_IS_DEFAULT(UseCountTrailingZerosInstruction))

   101       warning("Only 3A2000/3000 CPUs support UseCountTrailingZerosInstruction");

   102     FLAG_SET_DEFAULT(UseCountTrailingZerosInstruction, 0);

   103   }

   104 #endif

   105   UseSSE = 0; // Only on x86 and x64

   107   if (is_loongson()) {

   108     if (FLAG_IS_DEFAULT(UseLoongsonISA)) {

   109       FLAG_SET_DEFAULT(UseLoongsonISA, 1);

   110     }

   111   } else if (UseLoongsonISA) {

   112     if (!FLAG_IS_DEFAULT(UseLoongsonISA))

   113       warning("Only Loongson CPUs support LoongISA");

   114     FLAG_SET_DEFAULT(UseLoongsonISA, 0);

   115   }

   117   if (is_gs464e()) {

   118     if (FLAG_IS_DEFAULT(Use3A2000)) {

   119       FLAG_SET_DEFAULT(Use3A2000, 1);

   120     }

   121   } else if (Use3A2000) {

   122     if (!FLAG_IS_DEFAULT(Use3A2000))

   123       warning("Only 3A2000/3000 CPUs support this option");

   124     FLAG_SET_DEFAULT(Use3A2000, 0);

   125   }

   127   if (TieredCompilation) {

   128     if (!FLAG_IS_DEFAULT(TieredCompilation))

   129       warning("TieredCompilation not supported");

   130     FLAG_SET_DEFAULT(TieredCompilation, false);

   131   }

   133   char buf[256];

   134   jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",

   135               (has_l2_cache() ? ", has_l2_cache" : ""),

   136               (has_16k_page() ? ", has_16k_page" : ""),

   137               (is_loongson()  ? ", on_loongson"  : ""),

   138               (is_gs464() ? ", 3A1000" : ""),

   139               (is_gs464v() ? ", 3B1500" : "" ),

   140               (is_gs464e() ? ", 3A2000/3A3000" : ""),

   141               (UseLoongsonISA ? ", UseLoongsonISA" : ""),

   142               (UseCountTrailingZerosInstruction ? ", UseCountTrailingZerosInstruction" : ""),

   143               (Use3A2000 ? ", Use3A2000" : ""));

   145   // buf is started with ", " or is empty

   146   _features_str = strdup(strlen(buf) > 2 ? buf + 2 : buf);

   148   if (FLAG_IS_DEFAULT(AllocatePrefetchStyle)) {

   149     FLAG_SET_DEFAULT(AllocatePrefetchStyle, 1);

   150   }

   152   if (FLAG_IS_DEFAULT(AllocatePrefetchLines)) {

   153     FLAG_SET_DEFAULT(AllocatePrefetchLines, 1);

   154   }

   156   if (FLAG_IS_DEFAULT(AllocatePrefetchStepSize)) {

   157     FLAG_SET_DEFAULT(AllocatePrefetchStepSize, 64);

   158   }

   160   if (FLAG_IS_DEFAULT(AllocatePrefetchDistance)) {

   161     FLAG_SET_DEFAULT(AllocatePrefetchDistance, 64);

   162   }

   164   if (FLAG_IS_DEFAULT(AllocateInstancePrefetchLines)) {

   165     FLAG_SET_DEFAULT(AllocateInstancePrefetchLines, 1);

   166   }

   168   NOT_PRODUCT( if (PrintMiscellaneous && Verbose) print_features(); );

   169 }

   171 void VM_Version::print_features() {

   172   tty->print_cr("Version:%s", cpu_features());

   173 }

   175 int VM_Version::determine_features() {

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

   177   int features = platform_features(unknown_m);

   178   //spt_16k_page_m;

   179   return features;

   180 }

   182 static int saved_features = 0;

   184 void VM_Version::allow_all() {

   185   saved_features = _features;

   186   _features      = all_features_m;

   187 }

   189 void VM_Version::revert() {

   190   _features = saved_features;

   191 }

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