readelf - phpMan

File: binutils.info,  Node: readelf,  Next: elfedit,  Prev: dlltool,  Up: Top
15 readelf
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     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[lLiaprmfFsoRtUuTgAckK]|
              --debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow-links]]
             [--dwarf-depth=N]
             [--dwarf-start=N]
             [-I|--histogram]
             [-v|--version]
             [-W|--wide]
             [-H|--help]
             [-U METHOD|--unicode=METHOD]
             ELFFILE...
   '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.
   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',
     '--version-info', '--arch-specific', '--unwind', '--section-groups'
     and '--histogram'.
     Note - this option does not enable '--use-dynamic' itself, so if
     that option is not present on the command line then dynamic symbols
     and dynamic relocs will not be displayed.
'-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.  If a symbol has version information associated with it then
     this is displayed as well.  The version string is displayed as a
     suffix to the symbol name, preceeded by an @ character.  For
     example 'foo@VER_1'.  If the version is the default version to be
     used when resolving unversioned references to the symbol then it is
     displayed as a suffix preceeded by two @ characters.  For example
     'foo@@VER_2'.
'--dyn-syms'
     Displays the entries in dynamic symbol table section of the file,
     if it has one.  The output format is the same as the format used by
     the '--syms' option.
'-U [D|I|L|E|X|H]'
'--unicode=[default|invalid|locale|escape|hex|highlight]'
     Controls the display of non-ASCII characters in identifier names.
     The default ('--unicode=locale' or '--unicode=default') is to treat
     them as multibyte characters and display them in the current
     locale.  All other versions of this option treat the bytes as UTF-8
     encoded values and attempt to interpret them.  If they cannot be
     interpreted or if the '--unicode=invalid' option is used then they
     are displayed as a sequence of hex bytes, encloses in curly
     parethesis characters.
     Using the '--unicode=escape' option will display the characters as
     as unicode escape sequences (\UXXXX).  Using the '--unicode=hex'
     will display the characters as hex byte sequences enclosed between
     angle brackets.
     Using the '--unicode=highlight' will display the characters as
     unicode escape sequences but it will also highlighted them in red,
     assuming that colouring is supported by the output device.  The
     colouring is intended to draw attention to the presence of unicode
     sequences when they might not be expected.
'-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.
     When displaying relocations, this option makes 'readelf' display
     the dynamic relocations rather than the static relocations.
'-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.  *Note ar::.
'-w[lLiaprmfFsoRtUuTgAckK]'
'--debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow-links]'
     Displays the contents of the DWARF debug sections in the file, if
     any are present.  Compressed debug sections are automatically
     decompressed (temporarily) before they are displayed.  If one or
     more of the optional letters or words follows the switch then only
     those type(s) of data will be dumped.  The letters and words refer
     to the following information:
     'a'
     '=abbrev'
          Displays the contents of the '.debug_abbrev' section.
     'A'
     '=addr'
          Displays the contents of the '.debug_addr' section.
     'c'
     '=cu_index'
          Displays the contents of the '.debug_cu_index' and/or
          '.debug_tu_index' sections.
     'f'
     '=frames'
          Display the raw contents of a '.debug_frame' section.
     'F'
     '=frame-interp'
          Display the interpreted contents of a '.debug_frame' section.
     'g'
     '=gdb_index'
          Displays the contents of the '.gdb_index' and/or
          '.debug_names' sections.
     'i'
     '=info'
          Displays the contents of the '.debug_info' section.  Note: the
          output from this option can also be restricted by the use of
          the '--dwarf-depth' and '--dwarf-start' options.
     'k'
     '=links'
          Displays the contents of the '.gnu_debuglink' and/or
          '.gnu_debugaltlink' sections.  Also displays the link to a
          separate dwarf object file (dwo), if one is specified by the
          DW_AT_GNU_dwo_name or DW_AT_dwo_name attributes in the
          '.debug_info' section.
     'K'
     '=follow-links'
          Display the contents of any selected debug sections that are
          found in a linked, separate debug info file.  This can result
          in multiple versions of the same debug section being displayed
          if both the main file and the separate debug info file contain
          sections with the same name.
          In addition, when displaying DWARF attributes, if a form is
          found that references the separate debug info file, then the
          referenced contents will also be displayed.
     'l'
     '=rawline'
          Displays the contents of the '.debug_line' section in a raw
          format.
     'L'
     '=decodedline'
          Displays the interpreted contents of the '.debug_line'
          section.
     'm'
     '=macro'
          Displays the contents of the '.debug_macro' and/or
          '.debug_macinfo' sections.
     'o'
     '=loc'
          Displays the contents of the '.debug_loc' and/or
          '.debug_loclists' sections.
     'p'
     '=pubnames'
          Displays the contents of the '.debug_pubnames' and/or
          '.debug_gnu_pubnames' sections.
     'r'
     '=aranges'
          Displays the contents of the '.debug_aranges' section.
     'R'
     '=Ranges'
          Displays the contents of the '.debug_ranges' and/or
          '.debug_rnglists' sections.
     's'
     '=str'
          Displays the contents of the '.debug_str', '.debug_line_str'
          and/or '.debug_str_offsets' sections.
     't'
     '=pubtype'
          Displays the contents of the '.debug_pubtypes' and/or
          '.debug_gnu_pubtypes' sections.
     'T'
     '=trace_aranges'
          Displays the contents of the '.trace_aranges' section.
     'u'
     '=trace_abbrev'
          Displays the contents of the '.trace_abbrev' section.
     'U'
     '=trace_info'
          Displays the contents of the '.trace_info' section.
     Note: displaying the contents of '.debug_static_funcs',
     '.debug_static_vars' and 'debug_weaknames' sections is not
     currently supported.
'--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'.