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 [-p <number or name>|--string-dump=<number or name>]
26 [-c|--archive-index]
27 [-w[lLiaprmfFsoR]|
28 --debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]]
29 [-I|-histogram]
30 [-v|--version]
31 [-W|--wide]
32 [-H|--help]
33 elffile...
34
36 readelf displays information about one or more ELF format object files.
37 The options control what particular information to display.
38 elffile... are the object files to be examined. 32-bit and 64-bit ELF
40 files are supported, as are archives containing ELF files.
41 This program performs a similar function to objdump but it goes into
43 more detail and it exists independently of the BFD library, so if there
44 is a bug in BFD then readelf will not be affected.
45
47 The long and short forms of options, shown here as alternatives, are
48 equivalent. At least one option besides -v or -H must be given.
49 -a
51 --all
52 Equivalent to specifying --file-header, --program-headers,
53 --sections, --symbols, --relocs, --dynamic, --notes and
54 --version-info.
55 -h
57 --file-header
58 Displays the information contained in the ELF header at the start
59 of the file.
60 -l
62 --program-headers
63 --segments
64 Displays the information contained in the file's segment headers,
65 if it has any.
66 -S
68 --sections
69 --section-headers
70 Displays the information contained in the file's section headers,
71 if it has any.
72 -g
74 --section-groups
75 Displays the information contained in the file's section groups, if
76 it has any.
77 -t
79 --section-details
80 Displays the detailed section information. Implies -S.
81 -s
83 --symbols
84 --syms
85 Displays the entries in symbol table section of the file, if it has
86 one.
87 -e
89 --headers
90 Display all the headers in the file. Equivalent to -h -l -S.
91 -n
93 --notes
94 Displays the contents of the NOTE segments and/or sections, if any.
95 -r
97 --relocs
98 Displays the contents of the file's relocation section, if it has
99 one.
100 -u
102 --unwind
103 Displays the contents of the file's unwind section, if it has one.
104 Only the unwind sections for IA64 ELF files are currently
105 supported.
106 -d
108 --dynamic
109 Displays the contents of the file's dynamic section, if it has one.
110 -V
112 --version-info
113 Displays the contents of the version sections in the file, it they
114 exist.
115 -A
117 --arch-specific
118 Displays architecture-specific information in the file, if there is
119 any.
120 -D
122 --use-dynamic
123 When displaying symbols, this option makes readelf use the symbol
124 table in the file's dynamic section, rather than the one in the
125 symbols section.
126 -x <number or name>
128 --hex-dump=<number or name>
129 Displays the contents of the indicated section as a hexadecimal
130 dump. A number identifies a particular section by index in the
131 section table; any other string identifies all sections with that
132 name in the object file.
133 -p <number or name>
135 --string-dump=<number or name>
136 Displays the contents of the indicated section as printable
137 strings. A number identifies a particular section by index in the
138 section table; any other string identifies all sections with that
139 name in the object file.
140 -c
142 --archive-index
143 Displays the file symbol index infomation contained in the header
144 part of binary archives. Performs the same function as the t
145 command to ar, but without using the BFD library.
146 -w[lLiaprmfFsoR]
148 --debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]
149 Displays the contents of the debug sections in the file, if any are
150 present. If one of the optional letters or words follows the
151 switch then only data found in those specific sections will be
152 dumped.
153 Note: the =decodedline option will display the interpreted contents
155 of a .debug_line section whereas the =rawline option dumps the
156 contents in a raw format.
157 -I
159 --histogram
160 Display a histogram of bucket list lengths when displaying the
161 contents of the symbol tables.
162 -v
164 --version
165 Display the version number of readelf.
166 -W
168 --wide
169 Don't break output lines to fit into 80 columns. By default readelf
170 breaks section header and segment listing lines for 64-bit ELF
171 files, so that they fit into 80 columns. This option causes readelf
172 to print each section header resp. each segment one a single line,
173 which is far more readable on terminals wider than 80 columns.
174 -H
176 --help
177 Display the command line options understood by readelf.
178 @file
180 Read command-line options from file. The options read are inserted
181 in place of the original @file option. If file does not exist, or
182 cannot be read, then the option will be treated literally, and not
183 removed.
184 Options in file are separated by whitespace. A whitespace
186 character may be included in an option by surrounding the entire
187 option in either single or double quotes. Any character (including
188 a backslash) may be included by prefixing the character to be
189 included with a backslash. The file may itself contain additional
190 @file options; any such options will be processed recursively.
191
193 objdump(1), and the Info entries for binutils.
194
196 Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
197 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
198 Foundation, Inc.
199 Permission is granted to copy, distribute and/or modify this document
201 under the terms of the GNU Free Documentation License, Version 1.2 or
202 any later version published by the Free Software Foundation; with no
203 Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
204 Texts. A copy of the license is included in the section entitled "GNU
205 Free Documentation License".
206binutils-2.19.50.0.1 2009-07-28 READELF(1)