elfcopy,
objcopy
—
copy and translate object files
| elfcopy |
[-I
objformat |
-s objformat
|
--input-target=objformat]
[-K
symbolname |
--keep-symbol=symbolname]
[-L
symbolname |
--localize-symbol=symbolname]
[-N
symbolname |
--strip-symbol=symbolname]
[-O
objformat |
--output-target=objformat]
[-R
sectionname |
--remove-section=sectionname]
[-S |
--strip-all]
[-V |
--version]
[-W
symbolname |
--weaken-symbol=symbolname]
[-X |
--discard-locals]
[-d |
-g |
--strip-debug]
[-h |
--help]
[-j
sectionname |
--only-section=sectionname]
[-p |
--preserve-dates]
[-w |
--wildcard]
[-x |
--discard-all]
[--add-gnu-debuglink=filename]
[--add-section
sectionname=filename]
[--adjust-section-vma
section{+|-|=}val
| --change-section-address
section{+|-|=}val]
[--adjust-start=increment
|
--change-start=increment]
[--adjust-vma=increment
|
--change-addresses=increment]
[--adjust-warnings |
--change-warnings]
[--change-section-lma
section{+|-|=}val]
[--change-section-vma
section{+|-|=}val]
[--extract-dwo]
[--gap-fill=val]
[--globalize-symbol=ar
symbolname]
[--globalize-symbols=filename]
[--localize-hidden]
[--localize-symbols=filename]
[--no-adjust-warnings |
--no-change-warnings]
[--only-keep-debug]
[--pad-to=address]
[--prefix-alloc-sections=string]
[--prefix-sections=string]
[--prefix-symbols=string]
[--rename-section
oldname=newname[,flags]]
[--set-section-flags
sectionname=flags]
[--set-start=address]
[--srec-forceS3]
[--srec-len=val]
[--strip-dwo]
[--strip-symbols=filename]
[--strip-unneeded]
infile
[outfile] |
The
elfcopy utility copies the content of the
binary object named by argument
infile to
that named by argument
outfile, transforming
it according to the command line options specified. If argument
outfile is not specified,
elfcopy will create a temporary file and will
subsequently rename it as
infile.
The
elfcopy utility supports the following options:
-
-
- -I
objformat |
-s
objformat |
--input-target=objformat
- Specify that the input file named by the argument
infile is in the object format specified
by the argument objformat.
-
-
- -K
symbolname |
--keep-symbol=symbolname
- Copy the symbol named by argument
symbolname to the output.
-
-
- -L
symbolname |
--localize-symbol=symbolname
- Make the symbol named by argument
symbolname local to the output file.
-
-
- -N
symbol |
--strip-symbol=symbolname
- Do not copy the symbol named by argument
symbolname to the output.
-
-
- -O
objformat |
--output-target=objformat
- Write the output file using the object format specified in
argument objformat. The argument
objformat should be one of the target
names recognized by
elftc_bfd_find_target(3).
-
-
- -R
sectionname |
--remove-section=sectionname
- Remove any section with name
sectionname from the output file.
-
-
- -S
|
--strip-all
- Do not copy symbol and relocation information to the target
file.
-
-
- -V
|
--version
- Print a version identifier and exit.
-
-
- -W
symbolname |
--weaken-symbol=symbolname
- Mark the symbol named by argument
symbolname as weak in the output.
-
-
- -X
|
--discard-locals
- Do not copy compiler generated local symbols to the
output.
-
-
- -d
| -g |
--strip-debug
- Do not copy debugging information to the target file.
-
-
- -h
|
--help
- Display a help message and exit.
-
-
- -j
sectionname |
--only-section=sectionname
- Copy only the section named by argument
sectionname to the output.
-
-
- -p
|
--preserve-dates
- Set the access and modification times of the output file to
the same as those of the input.
-
-
- -w
|
--wildcard
- Use shell-style patterns to name symbols. The following
meta-characters are recognized in patterns:
- !
- If this is the first character of the pattern, invert
the sense of the pattern match.
*- Matches any string of characters in a symbol name.
- ?
- Matches zero or one character in a symbol name.
- [
- Mark the start of a character class.
\- Remove the special meaning of the next character in the
pattern.
- ]
- Mark the end of a character class.
-
-
- -x
|
--discard-all
- Do not copy non-global symbols to the output.
-
-
- --add-gnu-debuglink=filename
- Create a .gnu_debuglink section in the output file that
references the debug data in
filename.
-
-
- --add-section
sectionname=filename
- Add a new section to the output file with name
sectionname. The contents of the section
are taken from the file named by argument
filename. The size of the section will be
the number of bytes in file
filename.
-
-
- --adjust-section-vma
section{+|-|=}val
|
--change-section-address
section{+|-|=}val
- Depending on the operator specified, increase, decrease or
set both the virtual memory address and the load memory address of the
section named by the argument section.
The argument val specifies the desired
increment, decrement or new value for the address.
-
-
- --adjust-start=increment
|
--change-start=increment
- Increase the entry point address of the output ELF object
by the value specified in the argument
increment.
-
-
- --adjust-vma=increment
|
--change-addresses=increment
- Increase the virtual memory address and the load memory
address of all sections by the value specified by the argument
increment.
-
-
- --adjust-warnings
|
--change-warnings
- Issue a warning if the section specified by the options
--change-section-address,
--change-section-lma or
--change-section-vma does not exist in the
input object. This is the default.
-
-
- --change-section-lma
section{+|-|=}val
- Change or set the load memory address of the section named
by the argument section. Depending on the
operator specified, the value in argument
val will be used as an increment, a
decrement or as the new value of the load memory address.
-
-
- --change-section-vma
section{+|-|=}val
- Change or set the virtual memory address of the section
named by the argument section. Depending
on the operator specified, the value in argument
val will be used as an increment, a
decrement or as the new value of the virtual memory address.
-
-
- Copy only .dwo debug sections to the output file.
-
-
- --gap-fill=val
- Fill the gaps between sections with the byte value
specified by the argument val.
-
-
- --globalize-symbol=symbolname
- Make the symbol named by argument
symbolname global, so that it is visible
outside of the file in which it is defined.
-
-
- --globalize-symbols=filename
- Make each symbol listed in the file specified by
filename global.
-
-
- --localize-hidden
- Make all hidden symbols local to the output file. This
includes symbols with internal visiblity.
-
-
- --localize-symbols=filename
- Make each symbol listed in the file specified by
filename local to the output file.
-
-
- --no-adjust-warnings
|
--no-change-warnings
- Do not issue a warning if the section specified by the
options --change-section-address,
--change-section-lma or
--change-section-vma is missing in the input
object.
-
-
- --only-keep-debug
- Copy only debugging information to the output file.
-
-
- --pad-to=address
- Pad the load memory address of the output object to the
value specified by the argument address
by increasing the size of the section with the highest load memory
address.
-
-
- --prefix-alloc-sections=string
- Prefix the section names of all the allocated sections with
string.
-
-
- --prefix-sections=string
- Prefix the section names of all the sections with
string.
-
-
- --prefix-symbols=string
- Prefix the symbol names of all the symbols with
string.
-
-
- --rename-section
oldname=newname[,flags]
- Rename the section named by argument
oldname to
newname, optionally changing the sections
flags to that specified by argument
flags. Allowed values for the argument
flags are as for option
--set-section-flags below.
-
-
- --set-section-flags
sectionname=flags
- Set the flags for the section named by argument
sectionname to those specified by
argument flags. Argument
flags is a comma separated list of the
following flag names:
- alloc
- The section occupies space in the output file.
- code
- The section contains machine instructions.
- contents
- This flag is accepted but is ignored.
- data
- The section contains writeable data.
- debug
- The section holds debugging information.
- load
- The section is loadable.
- noload
- The section should not be loaded into memory.
- readonly
- The section is not writable.
- rom
- The section contains ROM'able contents.
- share
- This flag is accepted but is ignored.
-
-
- --set-start=address
- Set the start address of the output ELF object to the value
specified by the argument address.
-
-
- --srec-forceS3
- Only generate S-records of type “S3”. This
option is only meaningful when the output target is set to
“srec”.
-
-
- --srec-len=val
- Set the maximum length of an S-record line to
val. This option is only meaningful when
the output target is set to “srec”.
-
-
- --strip-dwo
- Do not copy .dwo debug sections to the output file.
-
-
- --strip-symbols=filename
- Do not copy any of the symbols specified by
filename to the output.
-
-
- --strip-unneeded
- Do not copy symbols that are not needed for relocation
processing.
The
elfcopy utility exits 0 on success,
and >0 if an error occurs.
ar(1),
ld(1),
mcs(1),
strip(1),
elf(3),
elftc_bfd_find_target(3),
ar(5),
elf(5)
The
elfcopy utility is expected to be option
compatible with GNU
objcopy.
elfcopy has been implemented by
Kai Wang
<
kaiwang27@users.sourceforge.net>.