READELF(1)                   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 -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.

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

COPYRIGHT
       Copyright (c) 1991-2014 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".



binutils-2.25                     2014-12-23                        READELF(1)
