1 /*
 2  * Copyright (c) 2019, 2023, 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
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24 
25 #ifndef SHARE_CDS_ARCHIVEUTILS_INLINE_HPP
26 #define SHARE_CDS_ARCHIVEUTILS_INLINE_HPP
27 
28 #include "cds/archiveUtils.hpp"
29 
30 #include "utilities/bitMap.inline.hpp"
31 
32 inline bool SharedDataRelocator::do_bit(size_t offset) {
33   address* p = _patch_base + offset;
34   assert(_patch_base <= p && p < _patch_end, "must be");
35 
36   address old_ptr = *p;
37   assert(_valid_old_base <= old_ptr && old_ptr < _valid_old_end, "must be");
38   assert(old_ptr != nullptr, "bits for null pointers should have been cleaned at dump time");
39 
40   address new_ptr = old_ptr + _delta;
41   assert(new_ptr != nullptr, "don't point to the bottom of the archive"); // See ArchivePtrMarker::mark_pointer().
42   assert(_valid_new_base <= new_ptr && new_ptr < _valid_new_end, "must be");
43 
44   DEBUG_ONLY(log_trace(cds, reloc)("Patch2: @%8d [" PTR_FORMAT "] " PTR_FORMAT " -> " PTR_FORMAT,
45                                    (int)offset, p2i(p), p2i(old_ptr), p2i(new_ptr)));
46   *p = new_ptr;
47   return true; // keep iterating
48 }
49 
50 #endif // SHARE_CDS_ARCHIVEUTILS_INLINE_HPP