jdk8-mips64-public/hotspot: src/os_cpu/windows_x86/vm/threadLS_windows

6822204: volatile fences should prefer lock:addl to actual mfence instructions
Reviewed-by: kvn, phh

     1 /*

     2  * Copyright 1998-2003 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 // Provides an entry point we can link against and

    26 // a buffer we can emit code into. The buffer is

    27 // filled by ThreadLocalStorage::generate_code_for_get_thread

    28 // and called from ThreadLocalStorage::thread()

    30 #include "incls/_precompiled.incl"

    31 #include "incls/_threadLS_windows_x86.cpp.incl"

    33 int ThreadLocalStorage::_thread_ptr_offset = 0;

    35 static void call_wrapper_dummy() {}

    37 // We need to call the os_exception_wrapper once so that it sets

    38 // up the offset from FS of the thread pointer.

    39 void ThreadLocalStorage::generate_code_for_get_thread() {

    40       os::os_exception_wrapper( (java_call_t)call_wrapper_dummy,

    41                                 NULL, NULL, NULL, NULL);

    42 }

    44 void ThreadLocalStorage::pd_init() { }

    46 void ThreadLocalStorage::pd_set_thread(Thread* thread)  {

    47   os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread);

    48 }

src/os_cpu/windows_x86/vm/threadLS_windows_x86.cpp@d0994e5bebce