Tue, 24 Jul 2018 13:22:11 +0800
#7048 added Loongson release info to hs_err crash files
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #include "precompiled.hpp" |
aoqi@0 | 26 | |
aoqi@0 | 27 | #if !defined(_WINDOWS) && !defined(__APPLE__) |
aoqi@0 | 28 | |
aoqi@0 | 29 | #include "memory/allocation.inline.hpp" |
aoqi@0 | 30 | #include "utilities/elfFuncDescTable.hpp" |
aoqi@0 | 31 | #include "utilities/elfSymbolTable.hpp" |
aoqi@0 | 32 | |
aoqi@0 | 33 | ElfSymbolTable::ElfSymbolTable(FILE* file, Elf_Shdr shdr) { |
aoqi@0 | 34 | assert(file, "null file handle"); |
aoqi@0 | 35 | m_symbols = NULL; |
aoqi@0 | 36 | m_next = NULL; |
aoqi@0 | 37 | m_file = file; |
aoqi@0 | 38 | m_status = NullDecoder::no_error; |
aoqi@0 | 39 | |
aoqi@0 | 40 | // try to load the string table |
aoqi@0 | 41 | long cur_offset = ftell(file); |
aoqi@0 | 42 | if (cur_offset != -1) { |
aoqi@0 | 43 | // call malloc so we can back up if memory allocation fails. |
aoqi@0 | 44 | m_symbols = (Elf_Sym*)os::malloc(shdr.sh_size, mtInternal); |
aoqi@0 | 45 | if (m_symbols) { |
aoqi@0 | 46 | if (fseek(file, shdr.sh_offset, SEEK_SET) || |
aoqi@0 | 47 | fread((void*)m_symbols, shdr.sh_size, 1, file) != 1 || |
aoqi@0 | 48 | fseek(file, cur_offset, SEEK_SET)) { |
aoqi@0 | 49 | m_status = NullDecoder::file_invalid; |
aoqi@0 | 50 | os::free(m_symbols); |
aoqi@0 | 51 | m_symbols = NULL; |
aoqi@0 | 52 | } |
aoqi@0 | 53 | } |
aoqi@0 | 54 | if (!NullDecoder::is_error(m_status)) { |
aoqi@0 | 55 | memcpy(&m_shdr, &shdr, sizeof(Elf_Shdr)); |
aoqi@0 | 56 | } |
aoqi@0 | 57 | } else { |
aoqi@0 | 58 | m_status = NullDecoder::file_invalid; |
aoqi@0 | 59 | } |
aoqi@0 | 60 | } |
aoqi@0 | 61 | |
aoqi@0 | 62 | ElfSymbolTable::~ElfSymbolTable() { |
aoqi@0 | 63 | if (m_symbols != NULL) { |
aoqi@0 | 64 | os::free(m_symbols); |
aoqi@0 | 65 | } |
aoqi@0 | 66 | |
aoqi@0 | 67 | if (m_next != NULL) { |
aoqi@0 | 68 | delete m_next; |
aoqi@0 | 69 | } |
aoqi@0 | 70 | } |
aoqi@0 | 71 | |
aoqi@0 | 72 | bool ElfSymbolTable::lookup(address addr, int* stringtableIndex, int* posIndex, int* offset, ElfFuncDescTable* funcDescTable) { |
aoqi@0 | 73 | assert(stringtableIndex, "null string table index pointer"); |
aoqi@0 | 74 | assert(posIndex, "null string table offset pointer"); |
aoqi@0 | 75 | assert(offset, "null offset pointer"); |
aoqi@0 | 76 | |
aoqi@0 | 77 | if (NullDecoder::is_error(m_status)) { |
aoqi@0 | 78 | return false; |
aoqi@0 | 79 | } |
aoqi@0 | 80 | |
aoqi@0 | 81 | size_t sym_size = sizeof(Elf_Sym); |
aoqi@0 | 82 | assert((m_shdr.sh_size % sym_size) == 0, "check size"); |
aoqi@0 | 83 | int count = m_shdr.sh_size / sym_size; |
aoqi@0 | 84 | if (m_symbols != NULL) { |
aoqi@0 | 85 | for (int index = 0; index < count; index ++) { |
aoqi@0 | 86 | if (STT_FUNC == ELF_ST_TYPE(m_symbols[index].st_info)) { |
aoqi@0 | 87 | Elf_Word st_size = m_symbols[index].st_size; |
aoqi@0 | 88 | address sym_addr; |
aoqi@0 | 89 | if (funcDescTable != NULL && funcDescTable->get_index() == m_symbols[index].st_shndx) { |
aoqi@0 | 90 | // We need to go another step trough the function descriptor table (currently PPC64 only) |
aoqi@0 | 91 | sym_addr = funcDescTable->lookup(m_symbols[index].st_value); |
aoqi@0 | 92 | } else { |
aoqi@0 | 93 | sym_addr = (address)m_symbols[index].st_value; |
aoqi@0 | 94 | } |
aoqi@0 | 95 | if (sym_addr <= addr && (Elf_Word)(addr - sym_addr) < st_size) { |
aoqi@0 | 96 | *offset = (int)(addr - sym_addr); |
aoqi@0 | 97 | *posIndex = m_symbols[index].st_name; |
aoqi@0 | 98 | *stringtableIndex = m_shdr.sh_link; |
aoqi@0 | 99 | return true; |
aoqi@0 | 100 | } |
aoqi@0 | 101 | } |
aoqi@0 | 102 | } |
aoqi@0 | 103 | } else { |
aoqi@0 | 104 | long cur_pos; |
aoqi@0 | 105 | if ((cur_pos = ftell(m_file)) == -1 || |
aoqi@0 | 106 | fseek(m_file, m_shdr.sh_offset, SEEK_SET)) { |
aoqi@0 | 107 | m_status = NullDecoder::file_invalid; |
aoqi@0 | 108 | return false; |
aoqi@0 | 109 | } |
aoqi@0 | 110 | |
aoqi@0 | 111 | Elf_Sym sym; |
aoqi@0 | 112 | for (int index = 0; index < count; index ++) { |
aoqi@0 | 113 | if (fread(&sym, sym_size, 1, m_file) == 1) { |
aoqi@0 | 114 | if (STT_FUNC == ELF_ST_TYPE(sym.st_info)) { |
aoqi@0 | 115 | Elf_Word st_size = sym.st_size; |
aoqi@0 | 116 | address sym_addr; |
aoqi@0 | 117 | if (funcDescTable != NULL && funcDescTable->get_index() == sym.st_shndx) { |
aoqi@0 | 118 | // We need to go another step trough the function descriptor table (currently PPC64 only) |
aoqi@0 | 119 | sym_addr = funcDescTable->lookup(sym.st_value); |
aoqi@0 | 120 | } else { |
aoqi@0 | 121 | sym_addr = (address)sym.st_value; |
aoqi@0 | 122 | } |
aoqi@0 | 123 | if (sym_addr <= addr && (Elf_Word)(addr - sym_addr) < st_size) { |
aoqi@0 | 124 | *offset = (int)(addr - sym_addr); |
aoqi@0 | 125 | *posIndex = sym.st_name; |
aoqi@0 | 126 | *stringtableIndex = m_shdr.sh_link; |
aoqi@0 | 127 | return true; |
aoqi@0 | 128 | } |
aoqi@0 | 129 | } |
aoqi@0 | 130 | } else { |
aoqi@0 | 131 | m_status = NullDecoder::file_invalid; |
aoqi@0 | 132 | return false; |
aoqi@0 | 133 | } |
aoqi@0 | 134 | } |
aoqi@0 | 135 | fseek(m_file, cur_pos, SEEK_SET); |
aoqi@0 | 136 | } |
aoqi@0 | 137 | return true; |
aoqi@0 | 138 | } |
aoqi@0 | 139 | |
aoqi@0 | 140 | #endif // !_WINDOWS && !__APPLE__ |