smartsharp / elfhash

elfhash

elfhash is a utility to manipulate hash table of ELF file.

#Features:

0, Architecture indepent, That means you can handle 32bit arm ELF in x86/x86_64 platform.

1, Convert GNU style hashtable in ELF to sysV style.

2, Rebuild sysv hashtable, if you change ELF dynamic symbols manually, you may need re-hash it.

3, Rename symbols to new name as same length. "The same length" is a limition: If new symbol name has different length, we need handle so many offset problem.

#Build:

$make

$sudo make install

It will install 'elfhash' to handle both 32bit and 64bit ELF.

#Usage:

$elfhash : convert gnu style hash to sysv style if it exists.

$elfhash -r : rebuild sysv hash.

$elfhash -f old_symbol -t new_symbol :rename old symbol name to new name

$elfhash -l : list the contents of elf

#NOTE:

!!!!!!!!!!!!!!!!!!!!!!!!!!!! DO not use it to manipulate system libraries, it is dangerous!!!!

#Thanks:

1.some codes come from PadicoTM project.

svn co svn://scm.gforge.inria.fr/svn/pm2/trunk

2.elf.h comes from elfutils without modifications.