NAME

readelf — display information about ELF objects

SYNOPSIS

DESCRIPTION

The readelf utility displays information about ELF objects and ar(1) archives.

The readelf utility recognizes the following options:

-a | --all

Turn on the following flags: -d, -h, -I, -l, -n, -r, -s, -u, -A, -S and -V.

-c | --archive-index

Print the archive symbol table for archives.

-d | --dynamic

Print the contents of the SHT_DYNAMIC sections in the ELF object.

-e | --headers

Print all program, file and section headers in the ELF object.

-g | --section-groups

Print the contents of the section groups in the ELF object.

-h | --file-header

Print the file header of the ELF object.

-l | --program-headers

Print the content of the program header table for the object.

-n | --notes

Print the contents of PT_NOTE segments or SHT_NOTE sections present in the ELF object.

-p section | --string-dump=section

Print the contents of the specified section as printable strings. The argument section should be the name of a section or a numeric section index.

-r | --relocs

Print relocation information.

-s | --syms | --symbols

Print symbol tables.

-t | --section-details

Print additional information about sections, such as the flags fields in section headers. Implies -S.

-u | --unwind

Not yet implemented (option accepted but ignored).

-v | --version

Prints a version identifier for readelf and exits.

-w[afilmoprsFLR] | --debug-dump[=long-option-name,...]

Display DWARF information. The -w option is used with the short options in the following table; the --debug-dump option is used with a comma-separated list of the corresponding long option names:

Short Option	Long Option	Description
a	abbrev	Show abbreviation information.
f	frames	Show frame information, displaying frame instructions.
i	info	Show debugging information entries.
l	rawline	Show line information in raw form.
m	macro	Show macro information.
o	loc	Show location list information.
p	pubnames	Show global names.
r	aranges|ranges	Show address range information.
s	str	Show the debug string table.
F	frames-interp	Show frame information, displaying register rules.
L	decodedline	Show line information in decoded form.
R	Ranges	Show range lists.

If no sub-options are specified, the default is to show information corresponding to the a, f, i, l, o, p, r, s and R short options.

-x section | --hex-dump=section

Display the contents of the specified section in hexadecimal. The argument section should be the name of a section or a numeric section index.

-z | --decompress

Decompress contents of sections specified by -x or -p before displaying. If the specified section is not compressed, it is displayed as is.

-A | --arch-specific

This option is accepted but is currently unimplemented.

-D | --use-dynamic

Print the symbol table specified by the DT_SYMTAB entry in the “.dynamic” section.

-H | --help

Print a help message.

-I | --histogram

Print information on bucket list lengths for sections of type SHT_HASH and SHT_GNU_HASH.

-N | --full-section-name

This option is accepted but is currently unimplemented.

-S | --sections | --section-headers

Print information in the section headers for each ELF object.

-V | --version-info

Print symbol versioning information.

-W | --wide

Print information about ELF structures using one long line per structure. If this option is not specified, readelf will list information in the headers of 64 bit ELF objects on two separate lines.

EXIT STATUS

The readelf utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

nm(1), addr2line(1), elfcopy(1),

AUTHORS

The readelf utility was written by Kai Wang <kaiwang27@users.sourceforge.net>.