1 /*

     2  * Copyright (c) 2011, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    24 

    25 #ifndef SHARE_VM_CODE_RELOCINFO_EXT_HPP

    26 #define SHARE_VM_CODE_RELOCINFO_EXT_HPP

    27 

    28 // symbolic_Relocation allows to anotate some addresses in the generated code.

    29 //

    30 // This class was initially defined using the last unused relocType. The

    31 // new version tries to limit the impact on open source code changes.

    32 //

    33 // Without compiled code support, symbolic_Relocation need not be a real

    34 // relocation. To avoid using the last unused relocType, the

    35 // symbolic_Relocation::spec(<any symbolic type>) has been replaced

    36 // by additional methods using directly the symbolic type.

    37 //

    38 // Note: the order of the arguments in some methods had to reversed

    39 // to avoid confusion between the relocType enum and the

    40 // symbolic_reference enum.

    41 class symbolic_Relocation : AllStatic {

    42 

    43  public:

    44   enum symbolic_reference {

    45     card_table_reference,

    46     eden_top_reference,

    47     heap_end_reference,

    48     polling_page_reference,

    49     mark_bits_reference,

    50     mark_mask_reference,

    51     oop_bits_reference,

    52     oop_mask_reference,

    53     debug_string_reference,

    54     last_symbolic_reference

    55   };

    56 

    57   // get the new value for a given symbolic type

    58   static address symbolic_value(symbolic_reference t);

    59 };

    60 

    61 #endif // SHARE_VM_CODE_RELOCINFO_EXT_HPP