Manual: elfedit

ELFEDIT(1)				    GNU Development Tools				  ELFEDIT(1)

NAME
       elfedit - update ELF header and program property of ELF files

SYNOPSIS
       elfedit [--input-mach=machine]
	       [--input-type=type]
	       [--input-osabi=osabi]
	       [--input-abiversion=version]
	       --output-mach=machine
	       --output-type=type
	       --output-osabi=osabi
	       --output-abiversion=version
	       --enable-x86-feature=feature
	       --disable-x86-feature=feature
	       [-v|--version]
	       [-h|--help]
	       elffile...

DESCRIPTION
       elfedit updates the ELF header and program property of ELF files which have the matching ELF machine
       and file types.	The options control how and which fields in the ELF header and program property
       should be updated.

       elffile... are the ELF files to be updated.  32-bit and 64-bit ELF files are supported, as are
       archives containing ELF files.

OPTIONS
       The long and short forms of options, shown here as alternatives, are equivalent. At least one of the
       --output-mach, --output-type, --output-osabi, --output-abiversion, --enable-x86-feature and
       --disable-x86-feature options must be given.

       --input-mach=machine
	   Set	the  matching  input  ELF machine type to machine.  If --input-mach isn't specified, it will
	   match any ELF machine types.

	   The supported ELF machine types are, i386, IAMCU, L1OM, K1OM and x86-64.

       --output-mach=machine
	   Change the ELF machine type in the ELF header to machine.  The supported ELF	 machine  types	 are
	   the same as --input-mach.

       --input-type=type
	   Set the matching input ELF file type to type.  If --input-type isn't specified, it will match any
	   ELF file types.

	   The supported ELF file types are, rel, exec and dyn.

       --output-type=type
	   Change  the	ELF  file  type	 in the ELF header to type.  The supported ELF types are the same as
	   --input-type.

       --input-osabi=osabi
	   Set the matching input ELF file OSABI to osabi.  If --input-osabi isn't specified, it will  match
	   any ELF OSABIs.

	   The supported ELF OSABIs are, none, HPUX, NetBSD, GNU, Linux (alias for GNU), Solaris, AIX, Irix,
	   FreeBSD, TRU64, Modesto, OpenBSD, OpenVMS, NSK, AROS and FenixOS.

       --output-osabi=osabi
	   Change  the	ELF  OSABI  in	the  ELF  header  to osabi.  The supported ELF OSABI are the same as
	   --input-osabi.

       --input-abiversion=version
	   Set the matching input ELF file ABIVERSION to version.  version must be between 0  and  255.	  If
	   --input-abiversion isn't specified, it will match any ELF ABIVERSIONs.

       --output-abiversion=version
	   Change the ELF ABIVERSION in the ELF header to version.  version must be between 0 and 255.

       --enable-x86-feature=feature
	   Set	the  feature  bit in program property in exec or dyn ELF files with machine types of i386 or
	   x86-64.  The supported features are, ibt, shstk, lam_u48 and lam_u57.

       --disable-x86-feature=feature
	   Clear the feature bit in program property in exec or dyn ELF files with machine types of i386  or
	   x86-64.  The supported features are the same as --enable-x86-feature.

	   Note:  --enable-x86-feature	and  --disable-x86-feature  are	 available  only  on hosts with mmap
	   support.

       -v
       --version
	   Display the version number of elfedit.

       -h
       --help
	   Display the command-line options understood by elfedit.

       @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
       readelf(1), and the Info entries for binutils.

COPYRIGHT
       Copyright (c) 1991-2026 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-2.46					 2026-03-15					  ELFEDIT(1)