NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | COPYRIGHT | COLOPHON

READELF(1)                  GNU Development Tools                 READELF(1)

NAME         top

       readelf - Displays information about ELF files.

SYNOPSIS         top

       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>]
               [-z|--decompress]
               [-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         top

       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         top

       The long and short forms of options, shown here as alternatives, are
       equivalent.  At least one option besides -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 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.

       -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.

       -z
       --decompress
           Requests that the section(s) being dumped by x, R or p options
           are decompressed before being displayed.  If the section(s) are
           not compressed then they are displayed as is.

       -c
       --archive-index
           Displays the file symbol index information 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 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.

SEE ALSO         top

       objdump(1), and the Info entries for binutils.

COPYRIGHT         top

       Copyright (c) 1991-2016 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".

COLOPHON         top

       This page is part of the binutils (a collection of tools for working
       with executable binaries) project.  Information about the project can
       be found at ⟨http://www.gnu.org/software/binutils/⟩.  If you have a
       bug report for this manual page, see 
       ⟨http://sourceware.org/bugzilla/enter_bug.cgi?product=binutils⟩.  This
       page was obtained from the project's upstream Git repository 
       ⟨git://sourceware.org/git/binutils-gdb.git⟩ on 2016-09-01.  If you
       discover any rendering problems in this HTML version of the page, or
       you believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail
       to man-pages@man7.org

binutils-2.27.51                 2016-08-07                       READELF(1)