jdk8-mips64-public/hotspot: src/cpu/x86/vm/interpreter

6378821: bitCount() should use POPC on SPARC processors and AMD+10h
Summary: bitCount() should use POPC on SPARC processors where POPC is implemented directly in hardware.
Reviewed-by: kvn, never

     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  public:

    27   // Sentinel placed in the code for interpreter returns so

    28   // that i2c adapters and osr code can recognize an interpreter

    29   // return address and convert the return to a specialized

    30   // block of code to handle compiedl return values and cleaning

    31   // the fpu stack.

    32   static const int return_sentinel;

    35   static Address::ScaleFactor stackElementScale() {

    36     return TaggedStackInterpreter? Address::times_8 : Address::times_4;

    37   }

    39   // Offset from rsp (which points to the last stack element)

    40   static int expr_offset_in_bytes(int i) { return stackElementSize()*i ; }

    41   static int expr_tag_offset_in_bytes(int i) {

    42     assert(TaggedStackInterpreter, "should not call this");

    43     return expr_offset_in_bytes(i) + wordSize;

    44   }

    46   // Support for Tagged Stacks

    48   // Stack index relative to tos (which points at value)

    49   static int expr_index_at(int i)     {

    50     return stackElementWords() * i;

    51   }

    53   static int expr_tag_index_at(int i) {

    54     assert(TaggedStackInterpreter, "should not call this");

    55     // tag is one word above java stack element

    56     return stackElementWords() * i + 1;

    57   }

    59   // Already negated by c++ interpreter

    60   static int local_index_at(int i)     {

    61     assert(i<=0, "local direction already negated");

    62     return stackElementWords() * i + (value_offset_in_bytes()/wordSize);

    63   }

    65   static int local_tag_index_at(int i) {

    66     assert(i<=0, "local direction already negated");

    67     assert(TaggedStackInterpreter, "should not call this");

    68     return stackElementWords() * i + (tag_offset_in_bytes()/wordSize);

    69   }

src/cpu/x86/vm/interpreter_x86.hpp@c771b7f43bbf

src/cpu/x86/vm/interpreter_x86.hpp

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

src/cpu/x86/vm/interpreter_x86.hpp@c771b7f43bbf

src/cpu/x86/vm/interpreter_x86.hpp