readelf
(1g)
Name
readelf - Displays information about ELF files.
Synopsis
readelf [-a|--all]
[-h|--file-header]
[-l|--program-headers|--segments]
[-S|--section-headers|--sections]
[-g|--section-groups]
[-t|--section-details]
[-e|--headers]
[-s|--syms|--symbols]
[--dyn-syms]
[-n|--notes]
[-r|--relocs]
[-u|--unwind]
[-d|--dynamic]
[-V|--version-info]
[-A|--arch-specific]
[-D|--use-dynamic]
[-x <number or name>|--hex-dump=<number or name>]
[-p <number or name>|--string-dump=<number or name>]
[-R <number or name>|--relocated-dump=<number or
name>]
[-c|--archive-index]
[-w[lLiaprmfFsoRt]|
--debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index]]
[--dwarf-depth=n]
[--dwarf-start=n]
[-I|--histogram]
[-v|--version]
[-W|--wide]
[-H|--help]
elffile...
Description
GNU Development Tools READELF(1)
NAME
readelf - Displays information about ELF files.
SYNOPSIS
readelf [-a|--all]
[-h|--file-header]
[-l|--program-headers|--segments]
[-S|--section-headers|--sections]
[-g|--section-groups]
[-t|--section-details]
[-e|--headers]
[-s|--syms|--symbols]
[--dyn-syms]
[-n|--notes]
[-r|--relocs]
[-u|--unwind]
[-d|--dynamic]
[-V|--version-info]
[-A|--arch-specific]
[-D|--use-dynamic]
[-x <number or name>|--hex-dump=<number or name>]
[-p <number or name>|--string-dump=<number or name>]
[-R <number or name>|--relocated-dump=<number or
name>]
[-c|--archive-index]
[-w[lLiaprmfFsoRt]|
--debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index]]
[--dwarf-depth=n]
[--dwarf-start=n]
[-I|--histogram]
[-v|--version]
[-W|--wide]
[-H|--help]
elffile...
DESCRIPTION
readelf displays information about one or more ELF format
object files. The options control what particular
information to display.
elffile... are the object files to be examined. 32-bit and
64-bit ELF files are supported, as are archives containing
ELF files.
This program performs a similar function to objdump but it
goes into more detail and it exists independently of the BFD
library, so if there is a bug in BFD then readelf will not
be affected.
OPTIONS
The long and short forms of options, shown here as
alternatives, are equivalent. At least one option besides
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GNU Development Tools READELF(1)
-v or -H must be given.
-a
--all
Equivalent to specifying --file-header,
--program-headers, --sections, --symbols, --relocs,
--dynamic, --notes and --version-info.
-h
--file-header
Displays the information contained in the ELF header at
the start of the file.
-l
--program-headers
--segments
Displays the information contained in the file's segment
headers, if it has any.
-S
--sections
--section-headers
Displays the information contained in the file's section
headers, if it has any.
-g
--section-groups
Displays the information contained in the file's section
groups, if it has any.
-t
--section-details
Displays the detailed section information. Implies -S.
-s
--symbols
--syms
Displays the entries in symbol table section of the
file, if it has one.
--dyn-syms
Displays the entries in dynamic symbol table section of
the file, if it has one.
-e
--headers
Display all the headers in the file. Equivalent to -h
-l -S.
-n
--notes
Displays the contents of the NOTE segments and/or
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GNU Development Tools READELF(1)
sections, if any.
-r
--relocs
Displays the contents of the file's relocation section,
if it has one.
-u
--unwind
Displays the contents of the file's unwind section, if
it has one. Only the unwind sections for IA64 ELF
files, as well as ARM unwind tables (".ARM.exidx" /
".ARM.extab") are currently supported.
-d
--dynamic
Displays the contents of the file's dynamic section, if
it has one.
-V
--version-info
Displays the contents of the version sections in the
file, it they exist.
-A
--arch-specific
Displays architecture-specific information in the file,
if there is any.
-D
--use-dynamic
When displaying symbols, this option makes readelf use
the symbol hash tables in the file's dynamic section,
rather than the symbol table sections.
-x <number or name>
--hex-dump=<number or name>
Displays the contents of the indicated section as a
hexadecimal bytes. A number identifies a particular
section by index in the section table; any other string
identifies all sections with that name in the object
file.
-R <number or name>
--relocated-dump=<number or name>
Displays the contents of the indicated section as a
hexadecimal bytes. A number identifies a particular
section by index in the section table; any other string
identifies all sections with that name in the object
file. The contents of the section will be relocated
before they are displayed.
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GNU Development Tools READELF(1)
-p <number or name>
--string-dump=<number or name>
Displays the contents of the indicated section as
printable strings. A number identifies a particular
section by index in the section table; any other string
identifies all sections with that name in the object
file.
-c
--archive-index
Displays the file symbol index infomation contained in
the header part of binary archives. Performs the same
function as the t command to ar, but without using the
BFD library.
-w[lLiaprmfFsoRt]
--debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index]
Displays the contents of the debug sections in the file,
if any are present. If one of the optional letters or
words follows the switch then only data found in those
specific sections will be dumped.
Note that there is no single letter option to display
the content of trace sections or .gdb_index.
Note: the =decodedline option will display the
interpreted contents of a .debug_line section whereas
the =rawline option dumps the contents in a raw format.
Note: the =frames-interp option will display the
interpreted contents of a .debug_frame section whereas
the =frames option dumps the contents in a raw format.
Note: the output from the =info option can also be
affected by the options --dwarf-depth and --dwarf-start.
--dwarf-depth=n
Limit the dump of the ".debug_info" section to n
children. This is only useful with --debug-dump=info.
The default is to print all DIEs; the special value 0
for n will also have this effect.
With a non-zero value for n, DIEs at or deeper than n
levels will not be printed. The range for n is zero-
based.
--dwarf-start=n
Print only DIEs beginning with the DIE numbered n. This
is only useful with --debug-dump=info.
If specified, this option will suppress printing of any
header information and all DIEs before the DIE numbered
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GNU Development Tools READELF(1)
n. Only siblings and children of the specified DIE will
be printed.
This can be used in conjunction with --dwarf-depth.
-I
--histogram
Display a histogram of bucket list lengths when
displaying the contents of the symbol tables.
-v
--version
Display the version number of readelf.
-W
--wide
Don't break output lines to fit into 80 columns. By
default readelf breaks section header and segment
listing lines for 64-bit ELF files, so that they fit
into 80 columns. This option causes readelf to print
each section header resp. each segment one a single
line, which is far more readable on terminals wider than
80 columns.
-H
--help
Display the command line options understood by readelf.
@file
Read command-line options from file. The options read
are inserted in place of the original @file option. If
file does not exist, or cannot be read, then the option
will be treated literally, and not removed.
Options in file are separated by whitespace. A
whitespace character may be included in an option by
surrounding the entire option in either single or double
quotes. Any character (including a backslash) may be
included by prefixing the character to be included with
a backslash. The file may itself contain additional
@file options; any such options will be processed
recursively.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
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GNU Development Tools READELF(1)
+---------------+------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------------+
|Availability | developer/gnu-binutils |
+---------------+------------------------+
|Stability | Uncommitted |
+---------------+------------------------+
SEE ALSO
objdump(1), and the Info entries for binutils.
COPYRIGHT
Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation
License, Version 1.3 or any later version published by the
Free Software Foundation; with no Invariant Sections, with
no Front-Cover Texts, and with no Back-Cover Texts. A copy
of the license is included in the section entitled "GNU Free
Documentation License".
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://ftp.gnu.org/gnu/binutils/binutils-2.23.1.tar.bz2
Further information about this software can be found on the
open source community website at
http://www.gnu.org/software/binutils/.
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