relocInfo_ext.hpp revision 12422:98fe046473c9 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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14 *
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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.
41class 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
62