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
|hex-dump= ] [-p
|string-dump= ] [-R
|relocated-dump= ] [-z|decompress]
[-c|archive-index]
[-w[lLiaprmfFsoRt]|
debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=loc,=Ranges,=pubtypes,=traceinfo,=traceabbrev,=tracearanges,=gdbindex]]
[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
hex-dump=
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
relocated-dump=
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
string-dump=
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,=traceinfo,=traceabbrev,=tracearanges,=gdbindex] 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 .gdbindex. Note: the =decodedline option will display the interpreted contents of a .debugline section whereas the =rawline option dumps the contents in a raw format.
Note: the =frames-interp option will display the interpreted contents of a .debugframe 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 ".debuginfo" 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)