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

ctz/dctz are only supported on 3A2000/3A3000 CPUs (Follows changeset:32b76f240db3).

     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() {

    78 	_features = determine_features();

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

    80 	_supports_cx8 = true;

    82 	char buf[256];

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

    84 #ifdef OPT_RANGECHECK

    85 			", optimized range check"

    86 #endif

    87 #ifdef OPT_PHI_1

    88 			", optimized phi"

    89 #endif

    90 #ifdef OPT_MERGE

    91 			", optimized merge"

    92 #endif

    93 			,	(has_l2_cache() ? "has_l2_cache" : ""), (has_16k_page() ? "has_16k_page" : "")

    94 	);

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

    96 #ifdef COMPILER2

    97   if (MaxVectorSize > 0) {

    98     if (!is_power_of_2(MaxVectorSize)) {

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

   100       MaxVectorSize = 8;

   101     }

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

   103       MaxVectorSize = 8;

   104     }

   105   }

   106   if (UseLoongsonISA)

   107     UseCountTrailingZerosInstruction = false;  // 2017.01.22 Now this guy is only supported on 3A2000/3A3000.

   108 #endif

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

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

   112 	_features_str = strdup(buf);

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

   114 }

   116 void VM_Version::print_features() {

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

   118 }

   120 int VM_Version::determine_features() {

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

   122 	return spt_16k_page_m;

   123 }

   125 static int saved_features = 0;

   127 void VM_Version::allow_all() {

   128 	saved_features = _features;

   129 	_features     = all_features_m;

   130 }

   132 void VM_Version::revert() {

   133 	_features = saved_features;

   134 }

src/cpu/mips/vm/vm_version_mips.cpp@45cd2837a395