1 /* 2 * Copyright (c) 1997, 2010, 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 #include "prims/jvm.h" 27 #include "utilities/decoder.hpp" 28 29 Decoder::decoder_status Decoder::_decoder_status = Decoder::no_error; 30 bool Decoder::_initialized = false; 31 32 #if !defined(_WINDOWS) && !defined(__APPLE__) 33 34 // Implementation of common functionalities among Solaris and Linux 35 #include "utilities/elfFile.hpp" 36 37 ElfFile* Decoder::_opened_elf_files = NULL; 38 39 bool Decoder::can_decode_C_frame_in_vm() { 40 return true; 41 } 42 43 void Decoder::initialize() { 44 _initialized = true; 45 } 46 47 void Decoder::uninitialize() { 48 if (_opened_elf_files != NULL) { 49 delete _opened_elf_files; 50 _opened_elf_files = NULL; 51 } 52 _initialized = false; 53 } 54 55 Decoder::decoder_status Decoder::decode(address addr, const char* filepath, char *buf, int buflen, int *offset) { 56 if (_decoder_status != no_error) { 57 return _decoder_status; 58 } 59 60 ElfFile* file = get_elf_file(filepath); 61 if (_decoder_status != no_error) { 62 return _decoder_status; 63 } 64 65 const char* symbol = file->decode(addr, offset); 66 if (file->get_status() == out_of_memory) { 67 _decoder_status = out_of_memory; 68 return _decoder_status; 69 } else if (symbol != NULL) { 70 if (!demangle(symbol, buf, buflen)) { 71 jio_snprintf(buf, buflen, "%s", symbol); 72 } 73 return no_error; 74 } else { 75 return symbol_not_found; 76 } 77 } 78 79 ElfFile* Decoder::get_elf_file(const char* filepath) { 80 if (_decoder_status != no_error) { 81 return NULL; 82 } 83 ElfFile* file = _opened_elf_files; 84 while (file != NULL) { 85 if (file->same_elf_file(filepath)) { 86 return file; 87 } 88 file = file->m_next; 89 } 90 91 file = new ElfFile(filepath); 92 if (file == NULL) { 93 _decoder_status = out_of_memory; 94 } 95 if (_opened_elf_files != NULL) { 96 file->m_next = _opened_elf_files; 97 } 98 99 _opened_elf_files = file; 100 return file; 101 } 102 103 #endif