1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/utilities/elfFile.hpp Sat Dec 11 13:20:56 2010 -0500
1.3 @@ -0,0 +1,140 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef __ELF_FILE_HPP
1.29 +#define __ELF_FILE_HPP
1.30 +
1.31 +#ifndef _WINDOWS
1.32 +
1.33 +#include <elf.h>
1.34 +#include <stdio.h>
1.35 +
1.36 +#ifdef _LP64
1.37 +
1.38 +typedef Elf64_Half Elf_Half;
1.39 +typedef Elf64_Word Elf_Word;
1.40 +typedef Elf64_Off Elf_Off;
1.41 +typedef Elf64_Addr Elf_Addr;
1.42 +
1.43 +typedef Elf64_Ehdr Elf_Ehdr;
1.44 +typedef Elf64_Shdr Elf_Shdr;
1.45 +typedef Elf64_Sym Elf_Sym;
1.46 +
1.47 +#define ELF_ST_TYPE ELF64_ST_TYPE
1.48 +
1.49 +#else
1.50 +
1.51 +typedef Elf32_Half Elf_Half;
1.52 +typedef Elf32_Word Elf_Word;
1.53 +typedef Elf32_Off Elf_Off;
1.54 +typedef Elf32_Addr Elf_Addr;
1.55 +
1.56 +
1.57 +typedef Elf32_Ehdr Elf_Ehdr;
1.58 +typedef Elf32_Shdr Elf_Shdr;
1.59 +typedef Elf32_Sym Elf_Sym;
1.60 +
1.61 +#define ELF_ST_TYPE ELF32_ST_TYPE
1.62 +#endif
1.63 +
1.64 +#include "globalDefinitions.hpp"
1.65 +#include "memory/allocation.hpp"
1.66 +#include "utilities/decoder.hpp"
1.67 +
1.68 +
1.69 +class ElfStringTable;
1.70 +class ElfSymbolTable;
1.71 +
1.72 +
1.73 +// On Solaris/Linux platforms, libjvm.so does contain all private symbols.
1.74 +// ElfFile is basically an elf file parser, which can lookup the symbol
1.75 +// that is the nearest to the given address.
1.76 +// Beware, this code is called from vm error reporting code, when vm is already
1.77 +// in "error" state, so there are scenarios, lookup will fail. We want this
1.78 +// part of code to be very defensive, and bait out if anything went wrong.
1.79 +
1.80 +class ElfFile: public CHeapObj {
1.81 + friend class Decoder;
1.82 + public:
1.83 + ElfFile(const char* filepath);
1.84 + ~ElfFile();
1.85 +
1.86 + const char* decode(address addr, int* offset);
1.87 + const char* filepath() {
1.88 + return m_filepath;
1.89 + }
1.90 +
1.91 + bool same_elf_file(const char* filepath) {
1.92 + assert(filepath, "null file path");
1.93 + assert(m_filepath, "already out of memory");
1.94 + return (m_filepath && !strcmp(filepath, m_filepath));
1.95 + }
1.96 +
1.97 + Decoder::decoder_status get_status() {
1.98 + return m_status;
1.99 + }
1.100 +
1.101 + private:
1.102 + // sanity check, if the file is a real elf file
1.103 + bool is_elf_file(Elf_Ehdr&);
1.104 +
1.105 + // load string tables from the elf file
1.106 + bool load_tables();
1.107 +
1.108 + // string tables are stored in a linked list
1.109 + void add_string_table(ElfStringTable* table);
1.110 +
1.111 + // symbol tables are stored in a linked list
1.112 + void add_symbol_table(ElfSymbolTable* table);
1.113 +
1.114 + // return a string table at specified section index
1.115 + ElfStringTable* get_string_table(int index);
1.116 +
1.117 + // look up an address and return the nearest symbol
1.118 + const char* look_up(Elf_Shdr shdr, address addr, int* offset);
1.119 +
1.120 + protected:
1.121 + ElfFile* m_next;
1.122 +
1.123 + private:
1.124 + // file
1.125 + const char* m_filepath;
1.126 + FILE* m_file;
1.127 +
1.128 + // Elf header
1.129 + Elf_Ehdr m_elfHdr;
1.130 +
1.131 + // symbol tables
1.132 + ElfSymbolTable* m_symbol_tables;
1.133 +
1.134 + // string tables
1.135 + ElfStringTable* m_string_tables;
1.136 +
1.137 + Decoder::decoder_status m_status;
1.138 +};
1.139 +
1.140 +#endif // _WINDOWS
1.141 +
1.142 +#endif // __ELF_FILE_HPP
1.143 +
