size —
display
section sizes and total size of ELF objects
| size |
[--format=format]
[--help]
[--radix=radix]
[--totals]
[--version]
[-ABVdhotx]
[file ...] |
The
size utility lists the sizes of ELF sections,
and optionally the total size, for each input
file specified on the command line. The
size utility can operate on ELF objects, on
ar(1) archives containing ELF
objects, and on core dumps. If no file name is specified on the command-line,
a.out is assumed.
The
size utility recognized the following options:
-
-
- --format=format
- Display output using the format specified by argument
format. Supported values for this
argument are: ‘berkeley’ and ‘sysv’. The
default output format is ‘berkeley’. See
Display Formats below
for more information.
-
-
- --help
- Display a help message and exit.
-
-
- --radix=radix
- Display numeric values using the radix specified by
argument radix. Supported values for
radix are 8, 10 and 16. The default radix
is 10.
-
-
- --totals
- Shows cumulative totals of section sizes from all objects.
This option is ignored for System V style output.
-
-
- --version
- Display a version identifier and exit.
-
-
- -A
- Equivalent to specifying option
--format=sysv.
-
-
- -B
- Equivalent to specifying option
--format=berkeley.
-
-
- -V
- Equivalent to specifying option
--version.
-
-
- -d
- Equivalent to specifying option
--radix=10.
-
-
- -h
- Equivalent to specifying option
--help.
-
-
- -o
- Equivalent to specifying option
--radix=8.
-
-
- -t
- Equivalent to specifying option
--totals.
-
-
- -x
- Equivalent to specifying option
--radix=16.
If ‘berkeley’ style output is in effect, an initial header line
naming fields will be output, followed by one line of output for each ELF
object specified on the command line or found in an archive.
Each line will contain the following whitespace separated fields in order:
- The size of the text segment in the object.
- The size of the data segment in the object.
- The size of the ‘bss’ segment in the
object.
- The total size of the object in either decimal or octal.
Decimal output is used if the specified output radix for numeric values is
10 or 16. Octal output is used if the radix being used for numeric values
is 8.
- The total size of the object in hexadecimal.
- The file name of the object.
If option
--totals was specified, an additional
line in the same format as above will be output at the end containing the sum
of the respective fields. The file name field for the line will contain the
string ‘(TOTALS)’.
If System V style output is selected,
size will
output the following information for each object:
- The name of the object followed by a colon.
- A header line containing the names of fields of subsequent
lines.
- One line per section present in the object. Each line has
three fields:
- The name of the section.
- Its size, in the selected radix for numeric
values.
- The address associated with the section, in the
selected numeric radix.
- A line whose section name field contains the string
‘Total’ and whose size field contains the sum of all
reported section sizes.
The
size utility exits 0 on success,
and >0 if an error occurs.
To display the section sizes for
/bin/ls use:
$ size /bin/ls
text data bss dec hex filename
20975 540 392 21907 5593 /bin/ls
To display sizes and total for
/bin/ls and
/bin/dd in hexadecimal, use:
$ size -tx /bin/ls /bin/dd
text data bss dec hex filename
0x51ef 0x21c 0x188 21907 5593 /bin/ls
0x3df5 0x170 0x200 16741 4165 /bin/dd
0x8fe4 0x38c 0x388 38648 96f8 (TOTALS)
To display section sizes for
/bin/ls in System V
format use:
$ size -A /bin/ls
/bin/ls :
section size addr
.interp 21 4194704
.note.ABI-tag 24 4194728
.hash 624 4194752
.dynsym 2088 4195376
.dynstr 810 4197464
.rela.dyn 120 4198280
.rela.plt 1656 4198400
.init 19 4200056
.plt 1120 4200076
.text 15224 4201200
.fini 14 4216424
.rodata 1472 4216448
.data 80 5267456
.eh_frame 1624 5267536
.dynamic 384 5269160
.ctors 16 5269544
.dtors 16 5269560
.jcr 8 5269576
.got 576 5269584
.bss 528 5270176
.comment 686 0
Total 27110
ar(1),
nm(1),
objdump(1),
readelf(1),
strings(1),
elf(3),
gelf(3)
AT&T Unix Systems Labs,
System V Application Binary Interface,
http://www.sco.com/developers/gabi/.
The
size utility first appeared in
Version 6 AT&T UNIX.
The
size utility was re-written by
S. Sam Arun Raj
<
samarunraj@gmail.com>
This manual page was written by
S. Sam Arun
Raj
<
samarunraj@gmail.com>