jdk8-mips64-public/hotspot: src/cpu/sparc/vm/stubRoutines

6791178: Specialize for zero as the compressed oop vm heap base
Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp

     1 /*

     2  * Copyright 1997-2007 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 #include "incls/_precompiled.incl"

    26 #include "incls/_stubRoutines_sparc.cpp.incl"

    28 // Implementation of the platform-specific part of StubRoutines - for

    29 // a description of how to extend it, see the stubRoutines.hpp file.

    32 extern "C" {

    33   address _flush_reg_windows();   // in .s file.

    34   // Flush registers to stack. In case of error we will need to stack walk.

    35   address bootstrap_flush_windows(void) {

    36     Thread* thread = ThreadLocalStorage::get_thread_slow();

    37     // Very early in process there is no thread.

    38     if (thread != NULL) {

    39       guarantee(thread->is_Java_thread(), "Not a Java thread.");

    40       JavaThread* jt = (JavaThread*)thread;

    41       guarantee(!jt->has_last_Java_frame(), "Must be able to flush registers!");

    42     }

    43     return (address)_flush_reg_windows();

    44   };

    45 };

    47 address StubRoutines::Sparc::_test_stop_entry = NULL;

    48 address StubRoutines::Sparc::_stop_subroutine_entry = NULL;

    49 address StubRoutines::Sparc::_flush_callers_register_windows_entry = CAST_FROM_FN_PTR(address, bootstrap_flush_windows);

    51 address StubRoutines::Sparc::_partial_subtype_check = NULL;

    53 int StubRoutines::Sparc::_atomic_memory_operation_lock = StubRoutines::Sparc::unlocked;

    55 int StubRoutines::Sparc::_v8_oop_lock_cache[StubRoutines::Sparc::nof_v8_oop_lock_cache_entries];

src/cpu/sparc/vm/stubRoutines_sparc.cpp@660978a2a31a

src/cpu/sparc/vm/stubRoutines_sparc.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/cpu/sparc/vm/stubRoutines_sparc.cpp@660978a2a31a

src/cpu/sparc/vm/stubRoutines_sparc.cpp