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

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 1997-2004 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/_icache_sparc.cpp.incl"

    28 #define __ _masm->

    30 void ICacheStubGenerator::generate_icache_flush(

    31   ICache::flush_icache_stub_t* flush_icache_stub

    32 ) {

    33   StubCodeMark mark(this, "ICache", "flush_icache_stub");

    34   address start = __ pc();

    36   Label L;

    37   __ bind(L);

    38   __ flush( O0, G0 );

    39   __ deccc( O1 );

    40   __ br(Assembler::positive, false, Assembler::pn, L);

    41   __ delayed()->inc( O0, 8 );

    42   __ retl(false);

    43   __ delayed()->mov( O2, O0 ); // handshake with caller to make sure it happened!

    45   // Must be set here so StubCodeMark destructor can call the flush stub.

    46   *flush_icache_stub = (ICache::flush_icache_stub_t)start;

    47 };

    49 #undef __

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

src/cpu/sparc/vm/icache_sparc.cpp

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

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

src/cpu/sparc/vm/icache_sparc.cpp