path: root/upstream/archlinux/man1/readelf.1

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.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
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.\" ========================================================================
.\"
.IX Title "READELF 1"
.TH READELF 1 2024-05-07 binutils-2.42.0 "GNU Development Tools"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH NAME
readelf \- display information about ELF files
.SH SYNOPSIS
.IX Header "SYNOPSIS"
readelf [\fB\-a\fR|\fB\-\-all\fR]
        [\fB\-h\fR|\fB\-\-file\-header\fR]
        [\fB\-l\fR|\fB\-\-program\-headers\fR|\fB\-\-segments\fR]
        [\fB\-S\fR|\fB\-\-section\-headers\fR|\fB\-\-sections\fR]
        [\fB\-g\fR|\fB\-\-section\-groups\fR]
        [\fB\-t\fR|\fB\-\-section\-details\fR]
        [\fB\-e\fR|\fB\-\-headers\fR]
        [\fB\-s\fR|\fB\-\-syms\fR|\fB\-\-symbols\fR]
        [\fB\-\-dyn\-syms\fR|\fB\-\-lto\-syms\fR]
        [\fB\-\-sym\-base=[0|8|10|16]\fR]
        [\fB\-\-demangle\fR\fI=style\fR|\fB\-\-no\-demangle\fR]
        [\fB\-\-quiet\fR]
        [\fB\-\-recurse\-limit\fR|\fB\-\-no\-recurse\-limit\fR]
        [\fB\-U\fR \fImethod\fR|\fB\-\-unicode=\fR\fImethod\fR]
        [\fB\-X\fR|\fB\-\-extra\-sym\-info\fR|\fB\-\-no\-extra\-sym\-info\fR]
        [\fB\-n\fR|\fB\-\-notes\fR]
        [\fB\-r\fR|\fB\-\-relocs\fR]
        [\fB\-u\fR|\fB\-\-unwind\fR]
        [\fB\-d\fR|\fB\-\-dynamic\fR]
        [\fB\-V\fR|\fB\-\-version\-info\fR]
        [\fB\-A\fR|\fB\-\-arch\-specific\fR]
        [\fB\-D\fR|\fB\-\-use\-dynamic\fR]
        [\fB\-L\fR|\fB\-\-lint\fR|\fB\-\-enable\-checks\fR]
        [\fB\-x\fR <number or name>|\fB\-\-hex\-dump=\fR<number or name>]
        [\fB\-p\fR <number or name>|\fB\-\-string\-dump=\fR<number or name>]
        [\fB\-R\fR <number or name>|\fB\-\-relocated\-dump=\fR<number or name>]
        [\fB\-z\fR|\fB\-\-decompress\fR]
        [\fB\-c\fR|\fB\-\-archive\-index\fR]
        [\fB\-w[lLiaprmfFsoORtUuTgAck]\fR|
         \fB\-\-debug\-dump\fR[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames\-interp,=str,=str\-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links]]
        [\fB\-wK\fR|\fB\-\-debug\-dump=follow\-links\fR]
        [\fB\-wN\fR|\fB\-\-debug\-dump=no\-follow\-links\fR]
        [\fB\-wD\fR|\fB\-\-debug\-dump=use\-debuginfod\fR]
        [\fB\-wE\fR|\fB\-\-debug\-dump=do\-not\-use\-debuginfod\fR]
        [\fB\-P\fR|\fB\-\-process\-links\fR]
        [\fB\-\-dwarf\-depth=\fR\fIn\fR]
        [\fB\-\-dwarf\-start=\fR\fIn\fR]
        [\fB\-\-ctf=\fR\fIsection\fR]
        [\fB\-\-ctf\-parent=\fR\fIsection\fR]
        [\fB\-\-ctf\-symbols=\fR\fIsection\fR]
        [\fB\-\-ctf\-strings=\fR\fIsection\fR]
        [\fB\-\-sframe=\fR\fIsection\fR]
        [\fB\-I\fR|\fB\-\-histogram\fR]
        [\fB\-v\fR|\fB\-\-version\fR]
        [\fB\-W\fR|\fB\-\-wide\fR]
        [\fB\-T\fR|\fB\-\-silent\-truncation\fR]
        [\fB\-H\fR|\fB\-\-help\fR]
        \fIelffile\fR...
.SH DESCRIPTION
.IX Header "DESCRIPTION"
\&\fBreadelf\fR displays information about one or more ELF format object
files.  The options control what particular information to display.
.PP
\&\fIelffile\fR... are the object files to be examined.  32\-bit and
64\-bit ELF files are supported, as are archives containing ELF files.
.PP
This program performs a similar function to \fBobjdump\fR 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.
.SH OPTIONS
.IX Header "OPTIONS"
The long and short forms of options, shown here as alternatives, are
equivalent.  At least one option besides \fB\-v\fR or \fB\-H\fR must be
given.
.IP \fB\-a\fR 4
.IX Item "-a"
.PD 0
.IP \fB\-\-all\fR 4
.IX Item "--all"
.PD
Equivalent to specifying \fB\-\-file\-header\fR,
\&\fB\-\-program\-headers\fR, \fB\-\-sections\fR, \fB\-\-symbols\fR,
\&\fB\-\-relocs\fR, \fB\-\-dynamic\fR, \fB\-\-notes\fR,
\&\fB\-\-version\-info\fR, \fB\-\-arch\-specific\fR, \fB\-\-unwind\fR,
\&\fB\-\-section\-groups\fR and \fB\-\-histogram\fR.
.Sp
Note \- this option does not enable \fB\-\-use\-dynamic\fR itself, so
if that option is not present on the command line then dynamic symbols
and dynamic relocs will not be displayed.
.IP \fB\-h\fR 4
.IX Item "-h"
.PD 0
.IP \fB\-\-file\-header\fR 4
.IX Item "--file-header"
.PD
Displays the information contained in the ELF header at the start of the
file.
.IP \fB\-l\fR 4
.IX Item "-l"
.PD 0
.IP \fB\-\-program\-headers\fR 4
.IX Item "--program-headers"
.IP \fB\-\-segments\fR 4
.IX Item "--segments"
.PD
Displays the information contained in the file's segment headers, if it
has any.
.IP \fB\-\-quiet\fR 4
.IX Item "--quiet"
Suppress "no symbols" diagnostic.
.IP \fB\-S\fR 4
.IX Item "-S"
.PD 0
.IP \fB\-\-sections\fR 4
.IX Item "--sections"
.IP \fB\-\-section\-headers\fR 4
.IX Item "--section-headers"
.PD
Displays the information contained in the file's section headers, if it
has any.
.IP \fB\-g\fR 4
.IX Item "-g"
.PD 0
.IP \fB\-\-section\-groups\fR 4
.IX Item "--section-groups"
.PD
Displays the information contained in the file's section groups, if it
has any.
.IP \fB\-t\fR 4
.IX Item "-t"
.PD 0
.IP \fB\-\-section\-details\fR 4
.IX Item "--section-details"
.PD
Displays the detailed section information. Implies \fB\-S\fR.
.IP \fB\-s\fR 4
.IX Item "-s"
.PD 0
.IP \fB\-\-symbols\fR 4
.IX Item "--symbols"
.IP \fB\-\-syms\fR 4
.IX Item "--syms"
.PD
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, preceded by an @ character.  For example
\&\fBfoo@VER_1\fR.  If the version is the default version to be used
when resolving unversioned references to the symbol then it is
displayed as a suffix preceded by two @ characters.  For example
\&\fBfoo@@VER_2\fR.
.IP \fB\-\-dyn\-syms\fR 4
.IX Item "--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
\&\fB\-\-syms\fR option.
.IP \fB\-\-lto\-syms\fR 4
.IX Item "--lto-syms"
Displays the contents of any LTO symbol tables in the file.
.IP \fB\-\-sym\-base=[0|8|10|16]\fR 4
.IX Item "--sym-base=[0|8|10|16]"
Forces the size field of the symbol table to use the given base.  Any
unrecognized options will be treated as \fB0\fR.  \fB\-\-sym\-base=0\fR
represents the default and legacy behaviour.  This will output sizes as decimal
for numbers less than 100000.  For sizes 100000 and greater hexadecimal notation
will be used with a 0x prefix.
\&\fB\-\-sym\-base=8\fR will give the symbol sizes in octal.
\&\fB\-\-sym\-base=10\fR will always give the symbol sizes in decimal.
\&\fB\-\-sym\-base=16\fR will always give the symbol sizes in hexadecimal with a
0x prefix.
.IP \fB\-C\fR 4
.IX Item "-C"
.PD 0
.IP \fB\-\-demangle[=\fR\fIstyle\fR\fB]\fR 4
.IX Item "--demangle[=style]"
.PD
Decode (\fIdemangle\fR) low-level symbol names into user-level names.
This makes C++ function names readable.  Different compilers have
different mangling styles.  The optional demangling style argument can
be used to choose an appropriate demangling style for your
compiler.
.IP \fB\-\-no\-demangle\fR 4
.IX Item "--no-demangle"
Do not demangle low-level symbol names.  This is the default.
.IP \fB\-\-recurse\-limit\fR 4
.IX Item "--recurse-limit"
.PD 0
.IP \fB\-\-no\-recurse\-limit\fR 4
.IX Item "--no-recurse-limit"
.IP \fB\-\-recursion\-limit\fR 4
.IX Item "--recursion-limit"
.IP \fB\-\-no\-recursion\-limit\fR 4
.IX Item "--no-recursion-limit"
.PD
Enables or disables a limit on the amount of recursion performed
whilst demangling strings.  Since the name mangling formats allow for
an infinite level of recursion it is possible to create strings whose
decoding will exhaust the amount of stack space available on the host
machine, triggering a memory fault.  The limit tries to prevent this
from happening by restricting recursion to 2048 levels of nesting.
.Sp
The default is for this limit to be enabled, but disabling it may be
necessary in order to demangle truly complicated names.  Note however
that if the recursion limit is disabled then stack exhaustion is
possible and any bug reports about such an event will be rejected.
.IP "\fB\-U\fR \fI[d|i|l|e|x|h]\fR" 4
.IX Item "-U [d|i|l|e|x|h]"
.PD 0
.IP \fB\-\-unicode=[default|invalid|locale|escape|hex|highlight]\fR 4
.IX Item "--unicode=[default|invalid|locale|escape|hex|highlight]"
.PD
Controls the display of non-ASCII characters in identifier names.
The default (\fB\-\-unicode=locale\fR or \fB\-\-unicode=default\fR) 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 \fB\-\-unicode=invalid\fR option is used then
they are displayed as a sequence of hex bytes, encloses in curly
parethesis characters.
.Sp
Using the \fB\-\-unicode=escape\fR option will display the characters
as as unicode escape sequences (\fI\euxxxx\fR).  Using the
\&\fB\-\-unicode=hex\fR will display the characters as hex byte
sequences enclosed between angle brackets.
.Sp
Using the \fB\-\-unicode=highlight\fR 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.
.IP \fB\-X\fR 4
.IX Item "-X"
.PD 0
.IP \fB\-\-extra\-sym\-info\fR 4
.IX Item "--extra-sym-info"
.PD
When displaying details of symbols, include extra information not
normally presented.  Currently this just adds the name of the section
referenced by the symbol's index field, if there is one.  In the
future more information may be displayed when this option is enabled.
.Sp
Enabling this option effectively enables the \fB\-\-wide\fR option as
well, at least when displaying symbol information.
.IP \fB\-\-no\-extra\-sym\-info\fR 4
.IX Item "--no-extra-sym-info"
Disables the effect of the \fB\-\-extra\-sym\-info\fR option.  This
is the default.
.IP \fB\-e\fR 4
.IX Item "-e"
.PD 0
.IP \fB\-\-headers\fR 4
.IX Item "--headers"
.PD
Display all the headers in the file.  Equivalent to \fB\-h \-l \-S\fR.
.IP \fB\-n\fR 4
.IX Item "-n"
.PD 0
.IP \fB\-\-notes\fR 4
.IX Item "--notes"
.PD
Displays the contents of the NOTE segments and/or sections, if any.
.IP \fB\-r\fR 4
.IX Item "-r"
.PD 0
.IP \fB\-\-relocs\fR 4
.IX Item "--relocs"
.PD
Displays the contents of the file's relocation section, if it has one.
.IP \fB\-u\fR 4
.IX Item "-u"
.PD 0
.IP \fB\-\-unwind\fR 4
.IX Item "--unwind"
.PD
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
(\f(CW\*(C`.ARM.exidx\*(C'\fR / \f(CW\*(C`.ARM.extab\*(C'\fR) are currently supported.  If
support is not yet implemented for your architecture you could try
dumping the contents of the \fI.eh_frames\fR section using the
\&\fB\-\-debug\-dump=frames\fR or \fB\-\-debug\-dump=frames\-interp\fR
options.
.IP \fB\-d\fR 4
.IX Item "-d"
.PD 0
.IP \fB\-\-dynamic\fR 4
.IX Item "--dynamic"
.PD
Displays the contents of the file's dynamic section, if it has one.
.IP \fB\-V\fR 4
.IX Item "-V"
.PD 0
.IP \fB\-\-version\-info\fR 4
.IX Item "--version-info"
.PD
Displays the contents of the version sections in the file, it they
exist.
.IP \fB\-A\fR 4
.IX Item "-A"
.PD 0
.IP \fB\-\-arch\-specific\fR 4
.IX Item "--arch-specific"
.PD
Displays architecture-specific information in the file, if there
is any.
.IP \fB\-D\fR 4
.IX Item "-D"
.PD 0
.IP \fB\-\-use\-dynamic\fR 4
.IX Item "--use-dynamic"
.PD
When displaying symbols, this option makes \fBreadelf\fR use the
symbol hash tables in the file's dynamic section, rather than the
symbol table sections.
.Sp
When displaying relocations, this option makes \fBreadelf\fR
display the dynamic relocations rather than the static relocations.
.IP \fB\-L\fR 4
.IX Item "-L"
.PD 0
.IP \fB\-\-lint\fR 4
.IX Item "--lint"
.IP \fB\-\-enable\-checks\fR 4
.IX Item "--enable-checks"
.PD
Displays warning messages about possible problems with the file(s)
being examined.  If used on its own then all of the contents of the
file(s) will be examined.  If used with one of the dumping options
then the warning messages will only be produced for the things being
displayed.
.IP "\fB\-x <number or name>\fR" 4
.IX Item "-x <number or name>"
.PD 0
.IP "\fB\-\-hex\-dump=<number or name>\fR" 4
.IX Item "--hex-dump=<number or name>"
.PD
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.
.IP "\fB\-R <number or name>\fR" 4
.IX Item "-R <number or name>"
.PD 0
.IP "\fB\-\-relocated\-dump=<number or name>\fR" 4
.IX Item "--relocated-dump=<number or name>"
.PD
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.
.IP "\fB\-p <number or name>\fR" 4
.IX Item "-p <number or name>"
.PD 0
.IP "\fB\-\-string\-dump=<number or name>\fR" 4
.IX Item "--string-dump=<number or name>"
.PD
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.
.IP \fB\-z\fR 4
.IX Item "-z"
.PD 0
.IP \fB\-\-decompress\fR 4
.IX Item "--decompress"
.PD
Requests that the section(s) being dumped by \fBx\fR, \fBR\fR or
\&\fBp\fR options are decompressed before being displayed.  If the
section(s) are not compressed then they are displayed as is.
.IP \fB\-c\fR 4
.IX Item "-c"
.PD 0
.IP \fB\-\-archive\-index\fR 4
.IX Item "--archive-index"
.PD
Displays the file symbol index information contained in the header part
of binary archives.  Performs the same function as the \fBt\fR
command to \fBar\fR, but without using the BFD library.
.IP \fB\-w[lLiaprmfFsOoRtUuTgAckK]\fR 4
.IX Item "-w[lLiaprmfFsOoRtUuTgAckK]"
.PD 0
.IP \fB\-\-debug\-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames\-interp,=str,=str\-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow\-links]\fR 4
.IX Item "--debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow-links]"
.PD
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:
.RS 4
.ie n .IP """a""" 4
.el .IP \f(CWa\fR 4
.IX Item "a"
.PD 0
.ie n .IP """=abbrev""" 4
.el .IP \f(CW=abbrev\fR 4
.IX Item "=abbrev"
.PD
Displays the contents of the \fB.debug_abbrev\fR section.
.ie n .IP """A""" 4
.el .IP \f(CWA\fR 4
.IX Item "A"
.PD 0
.ie n .IP """=addr""" 4
.el .IP \f(CW=addr\fR 4
.IX Item "=addr"
.PD
Displays the contents of the \fB.debug_addr\fR section.
.ie n .IP """c""" 4
.el .IP \f(CWc\fR 4
.IX Item "c"
.PD 0
.ie n .IP """=cu_index""" 4
.el .IP \f(CW=cu_index\fR 4
.IX Item "=cu_index"
.PD
Displays the contents of the \fB.debug_cu_index\fR and/or
\&\fB.debug_tu_index\fR sections.
.ie n .IP """f""" 4
.el .IP \f(CWf\fR 4
.IX Item "f"
.PD 0
.ie n .IP """=frames""" 4
.el .IP \f(CW=frames\fR 4
.IX Item "=frames"
.PD
Display the raw contents of a \fB.debug_frame\fR section.
.ie n .IP """F""" 4
.el .IP \f(CWF\fR 4
.IX Item "F"
.PD 0
.ie n .IP """=frames\-interp""" 4
.el .IP \f(CW=frames\-interp\fR 4
.IX Item "=frames-interp"
.PD
Display the interpreted contents of a \fB.debug_frame\fR section.
.ie n .IP """g""" 4
.el .IP \f(CWg\fR 4
.IX Item "g"
.PD 0
.ie n .IP """=gdb_index""" 4
.el .IP \f(CW=gdb_index\fR 4
.IX Item "=gdb_index"
.PD
Displays the contents of the \fB.gdb_index\fR and/or
\&\fB.debug_names\fR sections.
.ie n .IP """i""" 4
.el .IP \f(CWi\fR 4
.IX Item "i"
.PD 0
.ie n .IP """=info""" 4
.el .IP \f(CW=info\fR 4
.IX Item "=info"
.PD
Displays the contents of the \fB.debug_info\fR section.  Note: the
output from this option can also be restricted by the use of the 
\&\fB\-\-dwarf\-depth\fR and \fB\-\-dwarf\-start\fR options.
.ie n .IP """k""" 4
.el .IP \f(CWk\fR 4
.IX Item "k"
.PD 0
.ie n .IP """=links""" 4
.el .IP \f(CW=links\fR 4
.IX Item "=links"
.PD
Displays the contents of the \fB.gnu_debuglink\fR,
\&\fB.gnu_debugaltlink\fR and \fB.debug_sup\fR sections, if any of
them are present.  Also displays any links to separate dwarf object
files (dwo), if they are specified by the DW_AT_GNU_dwo_name or
DW_AT_dwo_name attributes in the \fB.debug_info\fR section.
.ie n .IP """K""" 4
.el .IP \f(CWK\fR 4
.IX Item "K"
.PD 0
.ie n .IP """=follow\-links""" 4
.el .IP \f(CW=follow\-links\fR 4
.IX Item "=follow-links"
.PD
Display the contents of any selected debug sections that are found in
linked, separate debug info file(s).  This can result in multiple
versions of the same debug section being displayed if it exists in
more than one file.
.Sp
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.
.Sp
Note \- in some distributions this option is enabled by default.  It
can be disabled via the \fBN\fR debug option.  The default can be
chosen when configuring the binutils via the
\&\fB\-\-enable\-follow\-debug\-links=yes\fR or
\&\fB\-\-enable\-follow\-debug\-links=no\fR options.  If these are not
used then the default is to enable the following of debug links.
.Sp
Note \- if support for the debuginfod protocol was enabled when the
binutils were built then this option will also include an attempt to
contact any debuginfod servers mentioned in the \fIDEBUGINFOD_URLS\fR
environment variable.  This could take some time to resolve.  This
behaviour can be disabled via the \fB=do\-not\-use\-debuginfod\fR debug
option.
.ie n .IP """N""" 4
.el .IP \f(CWN\fR 4
.IX Item "N"
.PD 0
.ie n .IP """=no\-follow\-links""" 4
.el .IP \f(CW=no\-follow\-links\fR 4
.IX Item "=no-follow-links"
.PD
Disables the following of links to separate debug info files.
.ie n .IP """D""" 4
.el .IP \f(CWD\fR 4
.IX Item "D"
.PD 0
.ie n .IP """=use\-debuginfod""" 4
.el .IP \f(CW=use\-debuginfod\fR 4
.IX Item "=use-debuginfod"
.PD
Enables contacting debuginfod servers if there is a need to follow
debug links.  This is the default behaviour.
.ie n .IP """E""" 4
.el .IP \f(CWE\fR 4
.IX Item "E"
.PD 0
.ie n .IP """=do\-not\-use\-debuginfod""" 4
.el .IP \f(CW=do\-not\-use\-debuginfod\fR 4
.IX Item "=do-not-use-debuginfod"
.PD
Disables contacting debuginfod servers when there is a need to follow
debug links.
.ie n .IP """l""" 4
.el .IP \f(CWl\fR 4
.IX Item "l"
.PD 0
.ie n .IP """=rawline""" 4
.el .IP \f(CW=rawline\fR 4
.IX Item "=rawline"
.PD
Displays the contents of the \fB.debug_line\fR section in a raw
format.
.ie n .IP """L""" 4
.el .IP \f(CWL\fR 4
.IX Item "L"
.PD 0
.ie n .IP """=decodedline""" 4
.el .IP \f(CW=decodedline\fR 4
.IX Item "=decodedline"
.PD
Displays the interpreted contents of the \fB.debug_line\fR section.
.ie n .IP """m""" 4
.el .IP \f(CWm\fR 4
.IX Item "m"
.PD 0
.ie n .IP """=macro""" 4
.el .IP \f(CW=macro\fR 4
.IX Item "=macro"
.PD
Displays the contents of the \fB.debug_macro\fR and/or
\&\fB.debug_macinfo\fR sections.
.ie n .IP """o""" 4
.el .IP \f(CWo\fR 4
.IX Item "o"
.PD 0
.ie n .IP """=loc""" 4
.el .IP \f(CW=loc\fR 4
.IX Item "=loc"
.PD
Displays the contents of the \fB.debug_loc\fR and/or
\&\fB.debug_loclists\fR sections.
.ie n .IP """O""" 4
.el .IP \f(CWO\fR 4
.IX Item "O"
.PD 0
.ie n .IP """=str\-offsets""" 4
.el .IP \f(CW=str\-offsets\fR 4
.IX Item "=str-offsets"
.PD
Displays the contents of the \fB.debug_str_offsets\fR section.
.ie n .IP """p""" 4
.el .IP \f(CWp\fR 4
.IX Item "p"
.PD 0
.ie n .IP """=pubnames""" 4
.el .IP \f(CW=pubnames\fR 4
.IX Item "=pubnames"
.PD
Displays the contents of the \fB.debug_pubnames\fR and/or
\&\fB.debug_gnu_pubnames\fR sections.
.ie n .IP """r""" 4
.el .IP \f(CWr\fR 4
.IX Item "r"
.PD 0
.ie n .IP """=aranges""" 4
.el .IP \f(CW=aranges\fR 4
.IX Item "=aranges"
.PD
Displays the contents of the \fB.debug_aranges\fR section.
.ie n .IP """R""" 4
.el .IP \f(CWR\fR 4
.IX Item "R"
.PD 0
.ie n .IP """=Ranges""" 4
.el .IP \f(CW=Ranges\fR 4
.IX Item "=Ranges"
.PD
Displays the contents of the \fB.debug_ranges\fR and/or
\&\fB.debug_rnglists\fR sections.
.ie n .IP """s""" 4
.el .IP \f(CWs\fR 4
.IX Item "s"
.PD 0
.ie n .IP """=str""" 4
.el .IP \f(CW=str\fR 4
.IX Item "=str"
.PD
Displays the contents of the \fB.debug_str\fR, \fB.debug_line_str\fR
and/or \fB.debug_str_offsets\fR sections.
.ie n .IP """t""" 4
.el .IP \f(CWt\fR 4
.IX Item "t"
.PD 0
.ie n .IP """=pubtype""" 4
.el .IP \f(CW=pubtype\fR 4
.IX Item "=pubtype"
.PD
Displays the contents of the \fB.debug_pubtypes\fR and/or
\&\fB.debug_gnu_pubtypes\fR sections.
.ie n .IP """T""" 4
.el .IP \f(CWT\fR 4
.IX Item "T"
.PD 0
.ie n .IP """=trace_aranges""" 4
.el .IP \f(CW=trace_aranges\fR 4
.IX Item "=trace_aranges"
.PD
Displays the contents of the \fB.trace_aranges\fR section.
.ie n .IP """u""" 4
.el .IP \f(CWu\fR 4
.IX Item "u"
.PD 0
.ie n .IP """=trace_abbrev""" 4
.el .IP \f(CW=trace_abbrev\fR 4
.IX Item "=trace_abbrev"
.PD
Displays the contents of the \fB.trace_abbrev\fR section.
.ie n .IP """U""" 4
.el .IP \f(CWU\fR 4
.IX Item "U"
.PD 0
.ie n .IP """=trace_info""" 4
.el .IP \f(CW=trace_info\fR 4
.IX Item "=trace_info"
.PD
Displays the contents of the \fB.trace_info\fR section.
.RE
.RS 4
.Sp
Note: displaying the contents of \fB.debug_static_funcs\fR,
\&\fB.debug_static_vars\fR and \fBdebug_weaknames\fR sections is not
currently supported.
.RE
.IP \fB\-\-dwarf\-depth=\fR\fIn\fR 4
.IX Item "--dwarf-depth=n"
Limit the dump of the \f(CW\*(C`.debug_info\*(C'\fR section to \fIn\fR children.
This is only useful with \fB\-\-debug\-dump=info\fR.  The default is
to print all DIEs; the special value 0 for \fIn\fR will also have this
effect.
.Sp
With a non-zero value for \fIn\fR, DIEs at or deeper than \fIn\fR
levels will not be printed.  The range for \fIn\fR is zero-based.
.IP \fB\-\-dwarf\-start=\fR\fIn\fR 4
.IX Item "--dwarf-start=n"
Print only DIEs beginning with the DIE numbered \fIn\fR.  This is only
useful with \fB\-\-debug\-dump=info\fR.
.Sp
If specified, this option will suppress printing of any header
information and all DIEs before the DIE numbered \fIn\fR.  Only
siblings and children of the specified DIE will be printed.
.Sp
This can be used in conjunction with \fB\-\-dwarf\-depth\fR.
.IP \fB\-P\fR 4
.IX Item "-P"
.PD 0
.IP \fB\-\-process\-links\fR 4
.IX Item "--process-links"
.PD
Display the contents of non-debug sections found in separate debuginfo
files that are linked to the main file.  This option automatically
implies the \fB\-wK\fR option, and only sections requested by other
command line options will be displayed.
.IP \fB\-\-ctf[=\fR\fIsection\fR\fB]\fR 4
.IX Item "--ctf[=section]"
Display the contents of the specified CTF section.  CTF sections themselves
contain many subsections, all of which are displayed in order.
.Sp
By default, display the name of the section named \fI.ctf\fR, which is the
name emitted by \fBld\fR.
.IP \fB\-\-ctf\-parent=\fR\fImember\fR 4
.IX Item "--ctf-parent=member"
If the CTF section contains ambiguously-defined types, it will consist
of an archive of many CTF dictionaries, all inheriting from one
dictionary containing unambiguous types.  This member is by default
named \fI.ctf\fR, like the section containing it, but it is possible to
change this name using the \f(CW\*(C`ctf_link_set_memb_name_changer\*(C'\fR
function at link time.  When looking at CTF archives that have been
created by a linker that uses the name changer to rename the parent
archive member, \fB\-\-ctf\-parent\fR can be used to specify the name
used for the parent.
.IP \fB\-\-ctf\-symbols=\fR\fIsection\fR 4
.IX Item "--ctf-symbols=section"
.PD 0
.IP \fB\-\-ctf\-strings=\fR\fIsection\fR 4
.IX Item "--ctf-strings=section"
.PD
Specify the name of another section from which the CTF file can inherit
strings and symbols.  By default, the \f(CW\*(C`.symtab\*(C'\fR and its linked
string table are used.
.Sp
If either of \fB\-\-ctf\-symbols\fR or \fB\-\-ctf\-strings\fR is specified, the
other must be specified as well.
.IP \fB\-I\fR 4
.IX Item "-I"
.PD 0
.IP \fB\-\-histogram\fR 4
.IX Item "--histogram"
.PD
Display a histogram of bucket list lengths when displaying the contents
of the symbol tables.
.IP \fB\-v\fR 4
.IX Item "-v"
.PD 0
.IP \fB\-\-version\fR 4
.IX Item "--version"
.PD
Display the version number of readelf.
.IP \fB\-W\fR 4
.IX Item "-W"
.PD 0
.IP \fB\-\-wide\fR 4
.IX Item "--wide"
.PD
Don't break output lines to fit into 80 columns. By default
\&\fBreadelf\fR breaks section header and segment listing lines for
64\-bit ELF files, so that they fit into 80 columns. This option causes
\&\fBreadelf\fR to print each section header resp. each segment one a
single line, which is far more readable on terminals wider than 80 columns.
.IP \fB\-T\fR 4
.IX Item "-T"
.PD 0
.IP \fB\-\-silent\-truncation\fR 4
.IX Item "--silent-truncation"
.PD
Normally when readelf is displaying a symbol name, and it has to
truncate the name to fit into an 80 column display, it will add a
suffix of \f(CW\*(C`[...]\*(C'\fR to the name.  This command line option
disables this behaviour, allowing 5 more characters of the name to be
displayed and restoring the old behaviour of readelf (prior to release
2.35).
.IP \fB\-H\fR 4
.IX Item "-H"
.PD 0
.IP \fB\-\-help\fR 4
.IX Item "--help"
.PD
Display the command-line options understood by \fBreadelf\fR.
.IP \fB@\fR\fIfile\fR 4
.IX Item "@file"
Read command-line options from \fIfile\fR.  The options read are
inserted in place of the original @\fIfile\fR option.  If \fIfile\fR
does not exist, or cannot be read, then the option will be treated
literally, and not removed.
.Sp
Options in \fIfile\fR 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 \fIfile\fR may itself contain additional
@\fIfile\fR options; any such options will be processed recursively.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBobjdump\fR\|(1), and the Info entries for \fIbinutils\fR.
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright (c) 1991\-2024 Free Software Foundation, Inc.
.PP
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".