symtool
| Crates.io | symtool |
| lib.rs | symtool |
| version | 0.1.4 |
| created_at | 2019-11-08 03:04:39.333504+00 |
| updated_at | 2021-04-30 01:03:51.602674+00 |
| description | symtool edits static symbol tables of MachO and ELF object files and archives |
| homepage | |
| repository | https://github.com/calebzulawski/symtool |
| max_upload_size | |
| id | 179229 |
| size | 33,371 |
Caleb Zulawski (calebzulawski)
documentation
README
symtool
Static symbol manipulation tool for ELF and Mach-O objects
Installation
Manual installation
Download the latest release for your operating system.
Homebrew (macOS, Linux, Windows Subsystem for Linux)
brew tap calebzulawski/symtool http://github.com/calebzulawski/symtool.git
brew install symtool
Cargo
cargo install symtool
File type support
Supports ELF and Mach-O objects, and archives of objects.
Capability
- Changing symbol visibility
- Renaming symbols
- Actions are performed in-place, leaving the rest of the binary untouched
Examples
Change symbol visibility
Hide all symbols starting with foo and expose all symbols ending in bar.
symtool --hidden "^foo" --default "bar$" input.o output.o
Rename a symbol
Rename the symbol foo to bar.
symtool --rename foo bar input.o output.o
Note: symbols are renamed in-place so the new name cannot be longer than the original.
Why use symtool?
- Pretty fast (objects are simply patched, no regeneration or relocations necessary)
- Supports a wide variety of unusual object formats (for example, Intel's ICC merges string tables)
- Cross-platform method of adjusting symbol visibility of existing objects and archives (GNU ld can do this when linking, but Apple's ld64 cannot)
License
symtool is distributed under the terms of both the MIT license and the Apache License (Version 2.0).
See LICENSE-APACHE and LICENSE-MIT for details.