Support for parsing .debug_types section introduced in DWARF version 4

eliben / pyelftools

Parsing ELF and DWARF in Python

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Support for parsing .debug_types section introduced in DWARF version 4 #520

Open dinkark-dev opened 10 months ago

dinkark-dev commented 10 months ago

Adds support for parsing the .debug_types section introduced in DWARF version 4.

Intends to address the issue #193

Changes:

Support for parsing type units from the .debug_types section
Added logic to generate debug_types with readelf tool
Added test binaries generated using IAR Embedded Workbench for ARM toolchain (dwarf_debug_types.elf)

Known issues: When running unit tests with new ELF binaries generated using the IAR EWARM toolchain,

Parsing of the .debug_frames section results in an infinite loop
Parsing of the .debug_aranges section causes stream parsing errors

Credits: Builds over .debug_types updates introduced in #265

sevaa commented 10 months ago

Just a heads up, please run the autotests locally and follow up until they all succeed. If you add binaries to the corpus, it's up to you to make sure the autotest doesn't fail on those - regardless of the primary purpose of the PR. I, too, had to debug unrelated discrepancies on readelf/dwarfdump, and the library only became better for that.

On Windows it's doable too, but somewhat trickier.

sevaa commented 9 months ago

@dinkark-dev : are you working on this?

dinkark-dev commented 9 months ago

Yes, I am working on it. However, I am not quite familiar with the .debug_frames or .debug_aranges sections thus it's taking a while.

driftregion commented 8 months ago

Hi @dinkark-dev, thanks for your work on this. I've pushed a test binary generated by TI Code Composer Studio for a TMS320 device to https://github.com/driftregion/pyelftools/blob/dinkar/dwarf-v4-debug-types-support/test/testfiles_for_dwarfdump/dwarf_ticcs.elf

It contains DW_FORM_ref_sig8 tags which pyelftools 0.30 does not yet handle.