DUMP(1) User Commands DUMP(1)

NAME

dump - dump selected parts of an object file

SYNOPSIS

dump [-aCcfghLorstV [-p]] [-T index [, indexn]] filename...


dump [-afhorstL [-p] [v]] filename...


dump [-hsr [-p] [-d number [, numbern]]] filename...


dump [-hsrt [-p] [-n name]] filename...

DESCRIPTION

The dump utility dumps selected parts of each of its object file
arguments.


The dump utility is best suited for use in shell scripts, whereas the
elfdump(1) command is recommended for more human-readable output.

OPTIONS

This utility will accept both object files and archives of object files.
It processes each file argument according to one or more of the following
options:

-a
Dumps the archive header of each member of an
archive.


-c
Dumps the string table(s).


-C
Dumps decoded symbol table names.


-f
Dumps each file header.


-g
Dumps the global symbols in the symbol table of an
archive.


-h
Dumps the section headers.


-L
Dumps dynamic linking information and static shared
library information, if available.


-o
Dumps each program execution header.


-r
Dumps relocation information.


-s
Dumps section contents in hexadecimal.


-t
Dumps symbol table entries.


-T index
-T index1,index2
Dumps only the indexed symbol table entry defined by
index or a range of entries defined by index1,index2.


-V
Prints version information.


The following modifiers are used in conjunction with the options listed
above to modify their capabilities.

-d number
-d number1,number2
Dumps the section number indicated by number or the
range of sections starting at number1 and ending at
number2. This modifier can be used with -h, -s, and
-r. When -d is used with -h or -s, the argument is
treated as the number of a section or range of
sections. When -d is used with -r, the argument is
treated as the number of the section or range of
sections to which the relocation applies. For
example, to print out all relocation entries
associated with the .text section, specify the
number of the section as the argument to -d. If
.text is section number 2 in the file, dump -r -d 2
will print all associated entries. To print out a
specific relocation section, use dump -s -n name
for raw data output, or dump -sv -n name for
interpreted output.


-n name
Dumps information pertaining only to the named
entity. This modifier can be used with -h, -s, -r,
and -t. When -n is used with -h or -s, the
argument will be treated as the name of a section.
When -n is used with -t or -r, the argument will be
treated as the name of a symbol. For example, dump
-t -n .text will dump the symbol table entry
associated with the symbol whose name is .text,
where dump -h -n .text will dump the section
header information for the .text section.


-p
Suppresses printing of the headings.


-v
Dumps information in symbolic representation rather
than numeric. This modifier can be used with

-a
(date, user id, group id)


-f
(class, data, type, machine, version, flags)


-h
(type, flags)


-L
(value)


-o
(type, flags)


-r
(name, type)


-s
(interpret section contents wherever
possible)


-t
(type, bind)

When -v is used with -s, all sections that can be
interpreted, such as the string table or symbol
table, will be interpreted. For example, dump -sv
-n .symtab filename... will produce the same
formatted output as dump -tv filename..., but dump
-s -n .symtab filename... will print raw data in
hexadecimal. Without additional modifiers, dump -sv
filename... will dump all sections in the files,
interpreting all those that it can and dumping the
rest (such as .text or .data) as raw data.


The dump utility attempts to format the information it dumps in a
meaningful way, printing certain information in character, hexadecimal,
octal, or decimal representation as appropriate.

SEE ALSO

elfdump(1), nm(1), ar.h(3HEAD), a.out(5), attributes(7)

December 19, 2018 DUMP(1)