4803
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include "precompiled.hpp"
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26
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27 #if !defined(_WINDOWS) && !defined(__APPLE__)
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28 #include "decoder_elf.hpp"
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29
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30 ElfDecoder::~ElfDecoder() {
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31 if (_opened_elf_files != NULL) {
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32 delete _opened_elf_files;
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33 _opened_elf_files = NULL;
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34 }
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35 }
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36
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37 bool ElfDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* filepath) {
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38 assert(filepath, "null file path");
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39 assert(buf != NULL && buflen > 0, "Invalid buffer");
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40 if (has_error()) return false;
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41 ElfFile* file = get_elf_file(filepath);
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42 if (file == NULL) {
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43 return false;
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44 }
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45
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46 if (!file->decode(addr, buf, buflen, offset)) {
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47 return false;
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48 }
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49 if (buf[0] != '\0') {
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50 demangle(buf, buf, buflen);
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51 }
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52 return true;
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53 }
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54
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55 ElfFile* ElfDecoder::get_elf_file(const char* filepath) {
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56 ElfFile* file;
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57
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58 file = _opened_elf_files;
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59 while (file != NULL) {
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60 if (file->same_elf_file(filepath)) {
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61 return file;
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62 }
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63 file = file->next();
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64 }
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65
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66 file = new (std::nothrow)ElfFile(filepath);
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67 if (file != NULL) {
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68 if (_opened_elf_files != NULL) {
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69 file->set_next(_opened_elf_files);
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70 }
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71 _opened_elf_files = file;
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72 }
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73
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74 return file;
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75 }
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76 #endif
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