Mercurial > hg > truffle

annotate src/share/vm/utilities/elfFile.hpp @ 2177:3582bf76420e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6990754: Use native memory and reference counting to implement SymbolTable Summary: move symbols from permgen into C heap and reference count them Reviewed-by: never, acorn, jmasa, stefank
author coleenp
date Thu, 27 Jan 2011 16:11:27 -0800
parents 2d4762ec74af
children f08d439fab8c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2022
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
1 /*
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
4 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
7 * published by the Free Software Foundation.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
8 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
13 * accompanied this code).
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
14 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
18 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
21 * questions.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
22 *
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
23 */
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
24
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
25 #ifndef __ELF_FILE_HPP
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
26 #define __ELF_FILE_HPP
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
27
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
28 #ifndef _WINDOWS
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
29
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
30 #include <elf.h>
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
31 #include <stdio.h>
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
32
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
33 #ifdef _LP64
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
34
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
35 typedef Elf64_Half Elf_Half;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
36 typedef Elf64_Word Elf_Word;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
37 typedef Elf64_Off Elf_Off;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
38 typedef Elf64_Addr Elf_Addr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
39
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
40 typedef Elf64_Ehdr Elf_Ehdr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
41 typedef Elf64_Shdr Elf_Shdr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
42 typedef Elf64_Sym Elf_Sym;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
43
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
44 #define ELF_ST_TYPE ELF64_ST_TYPE
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
45
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
46 #else
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
47
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
48 typedef Elf32_Half Elf_Half;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
49 typedef Elf32_Word Elf_Word;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
50 typedef Elf32_Off Elf_Off;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
51 typedef Elf32_Addr Elf_Addr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
52
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
53
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
54 typedef Elf32_Ehdr Elf_Ehdr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
55 typedef Elf32_Shdr Elf_Shdr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
56 typedef Elf32_Sym Elf_Sym;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
57
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
58 #define ELF_ST_TYPE ELF32_ST_TYPE
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
59 #endif
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
60
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
61 #include "globalDefinitions.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
62 #include "memory/allocation.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
63 #include "utilities/decoder.hpp"
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
64
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
65
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
66 class ElfStringTable;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
67 class ElfSymbolTable;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
68
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
69
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
70 // On Solaris/Linux platforms, libjvm.so does contain all private symbols.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
71 // ElfFile is basically an elf file parser, which can lookup the symbol
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
72 // that is the nearest to the given address.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
73 // Beware, this code is called from vm error reporting code, when vm is already
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
74 // in "error" state, so there are scenarios, lookup will fail. We want this
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
75 // part of code to be very defensive, and bait out if anything went wrong.
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
76
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
77 class ElfFile: public CHeapObj {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
78 friend class Decoder;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
79 public:
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
80 ElfFile(const char* filepath);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
81 ~ElfFile();
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
82
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
83 const char* decode(address addr, int* offset);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
84 const char* filepath() {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
85 return m_filepath;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
86 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
87
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
88 bool same_elf_file(const char* filepath) {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
89 assert(filepath, "null file path");
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
90 assert(m_filepath, "already out of memory");
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
91 return (m_filepath && !strcmp(filepath, m_filepath));
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
92 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
93
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
94 Decoder::decoder_status get_status() {
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
95 return m_status;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
96 }
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
97
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
98 private:
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
99 // sanity check, if the file is a real elf file
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
100 bool is_elf_file(Elf_Ehdr&);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
101
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
102 // load string tables from the elf file
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
103 bool load_tables();
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
104
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
105 // string tables are stored in a linked list
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
106 void add_string_table(ElfStringTable* table);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
107
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
108 // symbol tables are stored in a linked list
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
109 void add_symbol_table(ElfSymbolTable* table);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
110
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
111 // return a string table at specified section index
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
112 ElfStringTable* get_string_table(int index);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
113
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
114 // look up an address and return the nearest symbol
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
115 const char* look_up(Elf_Shdr shdr, address addr, int* offset);
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
116
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
117 protected:
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
118 ElfFile* m_next;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
119
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
120 private:
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
121 // file
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
122 const char* m_filepath;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
123 FILE* m_file;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
124
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
125 // Elf header
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
126 Elf_Ehdr m_elfHdr;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
127
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
128 // symbol tables
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
129 ElfSymbolTable* m_symbol_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
130
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
131 // string tables
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
132 ElfStringTable* m_string_tables;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
133
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
134 Decoder::decoder_status m_status;
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
135 };
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
136
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
137 #endif // _WINDOWS
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
138
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
139 #endif // __ELF_FILE_HPP
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
zgu
parents:
diff changeset
140