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 [-n⎪--notes]
18 [-r⎪--relocs]
19 [-u⎪--unwind]
20 [-d⎪--dynamic]
21 [-V⎪--version-info]
22 [-A⎪--arch-specific]
23 [-D⎪--use-dynamic]
24 [-x <number or name>⎪--hex-dump=<number or name>]
25 [-w[liaprmfFsoR]⎪
26 --debug-dump[=line,=info,=abbrev,=pub‐
27 names,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]]
28 [-I⎪-histogram]
29 [-v⎪--version]
30 [-W⎪--wide]
31 [-H⎪--help]
32 elffile...
33
35 readelf displays information about one or more ELF format object files.
36 The options control what particular information to display.
37 elffile... are the object files to be examined. 32-bit and 64-bit ELF
39 files are supported, as are archives containing ELF files.
40 This program performs a similar function to objdump but it goes into
42 more detail and it exists independently of the BFD library, so if there
43 is a bug in BFD then readelf will not be affected.
44
46 The long and short forms of options, shown here as alternatives, are
47 equivalent. At least one option besides -v or -H must be given.
48 -a
50 --all
51 Equivalent to specifying --file-header, --program-headers, --sec‐
52 tions, --symbols, --relocs, --dynamic, --notes and --version-info.
53 -h
55 --file-header
56 Displays the information contained in the ELF header at the start
57 of the file.
58 -l
60 --program-headers
61 --segments
62 Displays the information contained in the file's segment headers,
63 if it has any.
64 -S
66 --sections
67 --section-headers
68 Displays the information contained in the file's section headers,
69 if it has any.
70 -g
72 --section-groups
73 Displays the information contained in the file's section groups, if
74 it has any.
75 -t
77 --section-details
78 Displays the detailed section information. Implies -S.
79 -s
81 --symbols
82 --syms
83 Displays the entries in symbol table section of the file, if it has
84 one.
85 -e
87 --headers
88 Display all the headers in the file. Equivalent to -h -l -S.
89 -n
91 --notes
92 Displays the contents of the NOTE segments and/or sections, if any.
93 -r
95 --relocs
96 Displays the contents of the file's relocation section, if it has
97 one.
98 -u
100 --unwind
101 Displays the contents of the file's unwind section, if it has one.
102 Only the unwind sections for IA64 ELF files are currently sup‐
103 ported.
104 -d
106 --dynamic
107 Displays the contents of the file's dynamic section, if it has one.
108 -V
110 --version-info
111 Displays the contents of the version sections in the file, it they
112 exist.
113 -A
115 --arch-specific
116 Displays architecture-specific information in the file, if there is
117 any.
118 -D
120 --use-dynamic
121 When displaying symbols, this option makes readelf use the symbol
122 table in the file's dynamic section, rather than the one in the
123 symbols section.
124 -x <number or name>
126 --hex-dump=<number or name>
127 Displays the contents of the indicated section as a hexadecimal
128 dump. A number identifies a particular section by index in the
129 section table; any other string identifies all sections with that
130 name in the object file.
131 -w[liaprmfFsoR]
133 --debug-dump[=line,=info,=abbrev,=pub‐
134 names,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]
135 Displays the contents of the debug sections in the file, if any are
136 present. If one of the optional letters or words follows the
137 switch then only data found in those specific sections will be
138 dumped.
139 -I
141 --histogram
142 Display a histogram of bucket list lengths when displaying the con‐
143 tents of the symbol tables.
144 -v
146 --version
147 Display the version number of readelf.
148 -W
150 --wide
151 Don't break output lines to fit into 80 columns. By default readelf
152 breaks section header and segment listing lines for 64-bit ELF
153 files, so that they fit into 80 columns. This option causes readelf
154 to print each section header resp. each segment one a single line,
155 which is far more readable on terminals wider than 80 columns.
156 -H
158 --help
159 Display the command line options understood by readelf.
160 @file
162 Read command-line options from file. The options read are inserted
163 in place of the original @file option. If file does not exist, or
164 cannot be read, then the option will be treated literally, and not
165 removed.
166 Options in file are separated by whitespace. A whitespace charac‐
168 ter may be included in an option by surrounding the entire option
169 in either single or double quotes. Any character (including a
170 backslash) may be included by prefixing the character to be
171 included with a backslash. The file may itself contain additional
172 @file options; any such options will be processed recursively.
173
175 objdump(1), and the Info entries for binutils.
176
178 Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
179 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
180 Permission is granted to copy, distribute and/or modify this document
182 under the terms of the GNU Free Documentation License, Version 1.1 or
183 any later version published by the Free Software Foundation; with no
184 Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
185 Texts. A copy of the license is included in the section entitled "GNU
186 Free Documentation License".
187binutils-2.17.50.0.12-4 2007-04-14 READELF(1)