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#include "precompiled.hpp"
26
27#if !defined(_WINDOWS) && !defined(__APPLE__)
28#include "decoder_elf.hpp"
29#include "memory/allocation.inline.hpp"
30
31ElfDecoder::~ElfDecoder() {
32 if (_opened_elf_files != NULL) {
33 delete _opened_elf_files;
34 _opened_elf_files = NULL;
35 }
36}
37
38bool ElfDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* filepath, bool demangle_name) {
39 assert(filepath, "null file path");
40 assert(buf != NULL && buflen > 0, "Invalid buffer");
41 if (has_error()) return false;
42 ElfFile* file = get_elf_file(filepath);
43 if (file == NULL) {
44 return false;
45 }
46
47 if (!file->decode(addr, buf, buflen, offset)) {
48 return false;
49 }
50 if (demangle_name && (buf[0] != '\0')) {
51 demangle(buf, buf, buflen);
52 }
53 return true;
54}
55
56ElfFile* ElfDecoder::get_elf_file(const char* filepath) {
57 ElfFile* file;
58
59 file = _opened_elf_files;
60 while (file != NULL) {
61 if (file->same_elf_file(filepath)) {
62 return file;
63 }
64 file = file->next();
65 }
66
67 file = new (std::nothrow)ElfFile(filepath);
68 if (file != NULL) {
69 if (_opened_elf_files != NULL) {
70 file->set_next(_opened_elf_files);
71 }
72 _opened_elf_files = file;
73 }
74
75 return file;
76}
77#endif // !_WINDOWS && !__APPLE__
78