LC

Extract Function Names from DWARF Debug Info

hard7/10

Parse the ELF Symbol Table Parse a Windows PE Executable Header

Language

Compiler

2.0s Limit 256MB

Implementation

Implement a simplified DWARF function extractor in C.

Requirements:

Define structures for DWARF compilation unit header
Simulate or parse a minimal .debug_info section
Scan for subprogram tags (0x2E)
Extract function names from associated attributes
Print a list of functions with their addresses
Show compilation unit name
Explain the DWARF structure conceptually

Test:

Show compilation unit
Show function names extracted
Show function addresses
Explain the DWARF scanning process

Why This Matters

GDB's ability to show source lines and function names during a live debug session, and addr2line's ability to turn a crash address into a file:line, both come from walking the DW_TAG_subprogram DIEs you are extracting here. Production DWARF parsing is handled by libdwarf and elfutils's libdw, the same libraries behind `perf` and crash-reporting tools like Breakpad.

Hints

0 / 3 revealed

Validation Suite

main.c

Workspace 1.0