gimli

gimli is a library for reading and writing the DWARF debugging format.

• Zero copy: everything is just a reference to the original input buffer. No copies of the input data get made.

• Lazy: you can iterate compilation units without parsing their contents. Parse only as many debugging information entry (DIE) trees as you iterate over. gimli also uses DW_AT_sibling references to avoid parsing a DIE's children to find its next sibling, when possible.

• Cross-platform: gimli makes no assumptions about what kind of object file you're working with. The flipside to that is that it's up to you to provide an ELF loader on Linux or Mach-O loader on macOS.

  • Unsure which object file parser to use? Try the cross-platform object crate. See the gimli-examples crate for usage with gimli.

Install

To add a gimli dependency to your Cargo.toml, run:

$ cargo add gimli

The minimum supported Rust version is:

• 1.60.0 for the read feature and its dependencies.
• 1.65.0 for other features.

Documentation

• Documentation on docs.rs

• Example programs:

  • A simple .debug_info parser

  • A simple .debug_line parser

  • A simple DWARF writer

  • A simple DWARF converter to read DWARF sections then write them back out again.

  • A dwarfdump clone

  • An addr2line clone

  • ddbug, a utility giving insight into code generation by making debugging information readable.

  • dwprod, a tiny utility to list the compilers used to create each compilation unit within a shared library or executable (via DW_AT_producer).

  • dwarf-validate, a program to validate the integrity of some DWARF and its references between sections and compilation units.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.

Contribution

See CONTRIBUTING.md for hacking.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.