.\" Copyright (c) 2003 David O'Brien
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD: src/usr.bin/elfdump/elfdump.1,v 1.6 2005/01/18 13:43:48 ru Exp $
.\" $Id: elfdump.1 3231 2015-07-30 13:47:56Z emaste $
.\"
.Dd August 25, 2011
.Dt ELFDUMP 1
.Os
.Sh NAME
.Nm elfdump
.Nd "display information about"
.Tn ELF
files
.Sh SYNOPSIS
.Nm
.Fl a | cdeGhiknprsv
.Op Fl S
.Op Fl V
.Op Fl N Ar name
.Op Fl w Ar file
.Ar file ...
.Sh DESCRIPTION
The
.Nm
utility
dumps various information about the specified
.Tn ELF
.Ar file .
.Pp
The options are as follows:
.Bl -tag -width ".Fl w Ar file"
.It Fl a
Dump all information.
.It Fl c
Dump section headers.
.It Fl d
Dump dynamic symbols.
.It Fl e
Dump ELF header.
.It Fl G
Dump the GOT.
.It Fl h
Dump the hash values.
.It Fl i
Dump the dynamic interpreter.
.It Fl k
Dump the ELF checksum.
.It Fl n
Dump note sections.
.It Fl N Ar name
Only dump the section with the specific
.Ar name .
Archive symbol table can be specified with
the special section name ARSYM.
More than one
.Fl N
option may appear.
.It Fl p
Dump the program header.
.It Fl r
Dump relocations.
.It Fl s
Dump the symbol table.
.It Fl S
Output in the Solaris
.Nm
format.
.It Fl v
Dump the symbol-versioning sections.
.It Fl V
Print a version identifier and exit.
.It Fl w Ar file
Write output to a
.Ar file
instead of the standard output.
.El
.Sh EXIT STATUS
.Ex -std
.Sh EXAMPLES
The following is an example of a typical usage
of the
.Nm
command:
.Pp
.Dl "elfdump -a -w output /bin/ls"
.Pp
To dump the content of '.dynsym' symbol table:
.Pp
.Dl "elfdump -s -N .dynsym /bin/ls"
.Pp
To dump the archive symbol table,
but not the symbol tables of archive members:
.Pp
.Dl "elfdump -s -N ARSYM /usr/lib/libelf.a"
.Pp
To dump the content of .got section and
the symbol-versioning sections in Solaris
.Nm
format:
.Pp
.Dl "elfdump -S -Gv /bin/ls"
.Sh SEE ALSO
.Xr objdump 1 ,
.Xr readelf 1 ,
.Xr elf 3
.Rs
.%A "AT&T Unix Systems Labs"
.%T "System V Application Binary Interface"
.%O http://www.sco.com/developers/gabi/
.Re
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 5.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
utility
was written by
.An Jake Burkholder Aq Mt jake@FreeBSD.org .
Later it was rewritten based on the
libelf library.
This
manual page was written by
.An David O'Brien Aq Mt obrien@FreeBSD.org .
.Pp
.An Kai Wang Aq Mt kaiw@FreeBSD.org
rewrote it using the
.Lb libelf
and implemented additional functionality.
.Sh BUGS
Does not fully implement the
.Tn ELF
gABI.