1READELF(1)                   GNU Development Tools                  READELF(1)
2
3
4

NAME

6       readelf - Displays information about ELF files.
7

SYNOPSIS

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               [-R <number or name>|--relocated-dump=<number or name>]
27               [-c|--archive-index]
28               [-w[lLiaprmfFsoR]|
29                --debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]]
30               [-I|-histogram]
31               [-v|--version]
32               [-W|--wide]
33               [-H|--help]
34               elffile...
35

DESCRIPTION

37       readelf displays information about one or more ELF format object files.
38       The options control what particular information to display.
39
40       elffile... are the object files to be examined.  32-bit and 64-bit ELF
41       files are supported, as are archives containing ELF files.
42
43       This program performs a similar function to objdump but it goes into
44       more detail and it exists independently of the BFD library, so if there
45       is a bug in BFD then readelf will not be affected.
46

OPTIONS

48       The long and short forms of options, shown here as alternatives, are
49       equivalent.  At least one option besides -v or -H must be given.
50
51       -a
52       --all
53           Equivalent to specifying --file-header, --program-headers,
54           --sections, --symbols, --relocs, --dynamic, --notes and
55           --version-info.
56
57       -h
58       --file-header
59           Displays the information contained in the ELF header at the start
60           of the file.
61
62       -l
63       --program-headers
64       --segments
65           Displays the information contained in the file's segment headers,
66           if it has any.
67
68       -S
69       --sections
70       --section-headers
71           Displays the information contained in the file's section headers,
72           if it has any.
73
74       -g
75       --section-groups
76           Displays the information contained in the file's section groups, if
77           it has any.
78
79       -t
80       --section-details
81           Displays the detailed section information. Implies -S.
82
83       -s
84       --symbols
85       --syms
86           Displays the entries in symbol table section of the file, if it has
87           one.
88
89       -e
90       --headers
91           Display all the headers in the file.  Equivalent to -h -l -S.
92
93       -n
94       --notes
95           Displays the contents of the NOTE segments and/or sections, if any.
96
97       -r
98       --relocs
99           Displays the contents of the file's relocation section, if it has
100           one.
101
102       -u
103       --unwind
104           Displays the contents of the file's unwind section, if it has one.
105           Only the unwind sections for IA64 ELF files are currently
106           supported.
107
108       -d
109       --dynamic
110           Displays the contents of the file's dynamic section, if it has one.
111
112       -V
113       --version-info
114           Displays the contents of the version sections in the file, it they
115           exist.
116
117       -A
118       --arch-specific
119           Displays architecture-specific information in the file, if there is
120           any.
121
122       -D
123       --use-dynamic
124           When displaying symbols, this option makes readelf use the symbol
125           table in the file's dynamic section, rather than the one in the
126           symbols section.
127
128       -x <number or name>
129       --hex-dump=<number or name>
130           Displays the contents of the indicated section as a hexadecimal
131           bytes.  A number identifies a particular section by index in the
132           section table; any other string identifies all sections with that
133           name in the object file.
134
135       -R <number or name>
136       --relocated-dump=<number or name>
137           Displays the contents of the indicated section as a hexadecimal
138           bytes.  A number identifies a particular section by index in the
139           section table; any other string identifies all sections with that
140           name in the object file.  The contents of the section will be
141           relocated before they are displayed.
142
143       -p <number or name>
144       --string-dump=<number or name>
145           Displays the contents of the indicated section as printable
146           strings.  A number identifies a particular section by index in the
147           section table; any other string identifies all sections with that
148           name in the object file.
149
150       -c
151       --archive-index
152           Displays the file symbol index infomation contained in the header
153           part of binary archives.  Performs the same function as the t
154           command to ar, but without using the BFD library.
155
156       -w[lLiaprmfFsoR]
157       --debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges]
158           Displays the contents of the debug sections in the file, if any are
159           present.  If one of the optional letters or words follows the
160           switch then only data found in those specific sections will be
161           dumped.
162
163           Note: the =decodedline option will display the interpreted contents
164           of a .debug_line section whereas the =rawline option dumps the
165           contents in a raw format.
166
167       -I
168       --histogram
169           Display a histogram of bucket list lengths when displaying the
170           contents of the symbol tables.
171
172       -v
173       --version
174           Display the version number of readelf.
175
176       -W
177       --wide
178           Don't break output lines to fit into 80 columns. By default readelf
179           breaks section header and segment listing lines for 64-bit ELF
180           files, so that they fit into 80 columns. This option causes readelf
181           to print each section header resp. each segment one a single line,
182           which is far more readable on terminals wider than 80 columns.
183
184       -H
185       --help
186           Display the command line options understood by readelf.
187
188       @file
189           Read command-line options from file.  The options read are inserted
190           in place of the original @file option.  If file does not exist, or
191           cannot be read, then the option will be treated literally, and not
192           removed.
193
194           Options in file are separated by whitespace.  A whitespace
195           character may be included in an option by surrounding the entire
196           option in either single or double quotes.  Any character (including
197           a backslash) may be included by prefixing the character to be
198           included with a backslash.  The file may itself contain additional
199           @file options; any such options will be processed recursively.
200

SEE ALSO

202       objdump(1), and the Info entries for binutils.
203
205       Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
206       2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free
207       Software Foundation, Inc.
208
209       Permission is granted to copy, distribute and/or modify this document
210       under the terms of the GNU Free Documentation License, Version 1.3 or
211       any later version published by the Free Software Foundation; with no
212       Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
213       Texts.  A copy of the license is included in the section entitled "GNU
214       Free Documentation License".
215
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218binutils-2.20                     2009-10-16                        READELF(1)
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