1READELF(1) GNU Development Tools READELF(1)
2
6 readelf - Displays information about ELF files.
7
9 readelf [-a|--all]
10 [-h|--file-header]
11 [-l|--program-headers|--segments]
12 [-S|--section-headers|--sections]
13 [-g|--section-groups]
14 [-t|--section-details]
15 [-e|--headers]
16 [-s|--syms|--symbols]
17 [--dyn-syms]
18 [-n|--notes]
19 [-r|--relocs]
20 [-u|--unwind]
21 [-d|--dynamic]
22 [-V|--version-info]
23 [-A|--arch-specific]
24 [-D|--use-dynamic]
25 [-x <number or name>|--hex-dump=<number or name>]
26 [-p <number or name>|--string-dump=<number or name>]
27 [-R <number or name>|--relocated-dump=<number or name>]
28 [-c|--archive-index]
29 [-w[lLiaprmfFsoRt]|
30 --debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges]]
31 [-I|--histogram]
32 [-v|--version]
33 [-W|--wide]
34 [-H|--help]
35 elffile...
36
38 readelf displays information about one or more ELF format object files.
39 The options control what particular information to display.
40 elffile... are the object files to be examined. 32-bit and 64-bit ELF
42 files are supported, as are archives containing ELF files.
43 This program performs a similar function to objdump but it goes into
45 more detail and it exists independently of the BFD library, so if there
46 is a bug in BFD then readelf will not be affected.
47
49 The long and short forms of options, shown here as alternatives, are
50 equivalent. At least one option besides -v or -H must be given.
51 -a
53 --all
54 Equivalent to specifying --file-header, --program-headers,
55 --sections, --symbols, --relocs, --dynamic, --notes and
56 --version-info.
57 -h
59 --file-header
60 Displays the information contained in the ELF header at the start
61 of the file.
62 -l
64 --program-headers
65 --segments
66 Displays the information contained in the file's segment headers,
67 if it has any.
68 -S
70 --sections
71 --section-headers
72 Displays the information contained in the file's section headers,
73 if it has any.
74 -g
76 --section-groups
77 Displays the information contained in the file's section groups, if
78 it has any.
79 -t
81 --section-details
82 Displays the detailed section information. Implies -S.
83 -s
85 --symbols
86 --syms
87 Displays the entries in symbol table section of the file, if it has
88 one.
89 --dyn-syms
91 Displays the entries in dynamic symbol table section of the file,
92 if it has one.
93 -e
95 --headers
96 Display all the headers in the file. Equivalent to -h -l -S.
97 -n
99 --notes
100 Displays the contents of the NOTE segments and/or sections, if any.
101 -r
103 --relocs
104 Displays the contents of the file's relocation section, if it has
105 one.
106 -u
108 --unwind
109 Displays the contents of the file's unwind section, if it has one.
110 Only the unwind sections for IA64 ELF files, as well as ARM unwind
111 tables (".ARM.exidx" / ".ARM.extab") are currently supported.
112 -d
114 --dynamic
115 Displays the contents of the file's dynamic section, if it has one.
116 -V
118 --version-info
119 Displays the contents of the version sections in the file, it they
120 exist.
121 -A
123 --arch-specific
124 Displays architecture-specific information in the file, if there is
125 any.
126 -D
128 --use-dynamic
129 When displaying symbols, this option makes readelf use the symbol
130 hash tables in the file's dynamic section, rather than the symbol
131 table sections.
132 -x <number or name>
134 --hex-dump=<number or name>
135 Displays the contents of the indicated section as a hexadecimal
136 bytes. A number identifies a particular section by index in the
137 section table; any other string identifies all sections with that
138 name in the object file.
139 -R <number or name>
141 --relocated-dump=<number or name>
142 Displays the contents of the indicated section as a hexadecimal
143 bytes. A number identifies a particular section by index in the
144 section table; any other string identifies all sections with that
145 name in the object file. The contents of the section will be
146 relocated before they are displayed.
147 -p <number or name>
149 --string-dump=<number or name>
150 Displays the contents of the indicated section as printable
151 strings. A number identifies a particular section by index in the
152 section table; any other string identifies all sections with that
153 name in the object file.
154 -c
156 --archive-index
157 Displays the file symbol index infomation contained in the header
158 part of binary archives. Performs the same function as the t
159 command to ar, but without using the BFD library.
160 -w[lLiaprmfFsoRt]
162 --debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges]
163 Displays the contents of the debug sections in the file, if any are
164 present. If one of the optional letters or words follows the
165 switch then only data found in those specific sections will be
166 dumped.
167 Note that there is no single letter option to display the content
169 of trace sections.
170 Note: the =decodedline option will display the interpreted contents
172 of a .debug_line section whereas the =rawline option dumps the
173 contents in a raw format.
174 Note: the =frames-interp option will display the interpreted
176 contents of a .debug_frame section whereas the =frames option dumps
177 the contents in a raw format.
178 -I
180 --histogram
181 Display a histogram of bucket list lengths when displaying the
182 contents of the symbol tables.
183 -v
185 --version
186 Display the version number of readelf.
187 -W
189 --wide
190 Don't break output lines to fit into 80 columns. By default readelf
191 breaks section header and segment listing lines for 64-bit ELF
192 files, so that they fit into 80 columns. This option causes readelf
193 to print each section header resp. each segment one a single line,
194 which is far more readable on terminals wider than 80 columns.
195 -H
197 --help
198 Display the command line options understood by readelf.
199 @file
201 Read command-line options from file. The options read are inserted
202 in place of the original @file option. If file does not exist, or
203 cannot be read, then the option will be treated literally, and not
204 removed.
205 Options in file are separated by whitespace. A whitespace
207 character may be included in an option by surrounding the entire
208 option in either single or double quotes. Any character (including
209 a backslash) may be included by prefixing the character to be
210 included with a backslash. The file may itself contain additional
211 @file options; any such options will be processed recursively.
212
214 objdump(1), and the Info entries for binutils.
215
217 Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
218 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free
219 Software Foundation, Inc.
220 Permission is granted to copy, distribute and/or modify this document
222 under the terms of the GNU Free Documentation License, Version 1.3 or
223 any later version published by the Free Software Foundation; with no
224 Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
225 Texts. A copy of the license is included in the section entitled "GNU
226 Free Documentation License".
227binutils-2.21 2010-12-08 READELF(1)