hotspot/src/cpu/ppc/vm/metaspaceShared_ppc.cpp
changeset 22824 28258dd5cb2e
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22823:40b2c6c30123 22824:28258dd5cb2e
       
     1 /*
       
     2  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
       
     3  * Copyright 2012, 2013 SAP AG. 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  */
       
    25 
       
    26 #include "precompiled.hpp"
       
    27 #include "asm/macroAssembler.inline.hpp"
       
    28 #include "asm/codeBuffer.hpp"
       
    29 #include "memory/metaspaceShared.hpp"
       
    30 
       
    31 // Generate the self-patching vtable method:
       
    32 //
       
    33 // This method will be called (as any other Klass virtual method) with
       
    34 // the Klass itself as the first argument.  Example:
       
    35 //
       
    36 //   oop obj;
       
    37 //   int size = obj->klass()->klass_part()->oop_size(this);
       
    38 //
       
    39 // for which the virtual method call is Klass::oop_size();
       
    40 //
       
    41 // The dummy method is called with the Klass object as the first
       
    42 // operand, and an object as the second argument.
       
    43 //
       
    44 
       
    45 //=====================================================================
       
    46 
       
    47 // All of the dummy methods in the vtable are essentially identical,
       
    48 // differing only by an ordinal constant, and they bear no releationship
       
    49 // to the original method which the caller intended. Also, there needs
       
    50 // to be 'vtbl_list_size' instances of the vtable in order to
       
    51 // differentiate between the 'vtable_list_size' original Klass objects.
       
    52 
       
    53 void MetaspaceShared::generate_vtable_methods(void** vtbl_list,
       
    54                                               void** vtable,
       
    55                                               char** md_top,
       
    56                                               char* md_end,
       
    57                                               char** mc_top,
       
    58                                               char* mc_end) {
       
    59   Unimplemented();
       
    60 }
       
    61