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>]
	       [-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
       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.

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

COPYRIGHT
       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".



binutils-2.27			  2016-08-03			    READELF(1)