.debug_info
Introduction
The .debug_info section of an ELF contains information generated by compilers to describe the source code while debugging by keeping symbols and its type, scope, file, line number, etc. The .debug_info[1] section is one of the main components of DWARF[2][3] debug info files.[4] This is generated by a compiler when -g switch or its variants are used.
Other debug ELF sections
| Section Name | Description |
|---|---|
| .debug_types | Contains the non-trivial types. Stored as a hash structure so that duplicate type definition can be removed easily. |
| .debug_str | Contains strings that are not placed in the .debug_info and .debug_types sections. The linker merges the string tables to eliminate duplicates. |
| .debug_aranges | Contain range lists to define what pieces of a program's text belong to which subprograms and compilation units. |
| .debug_loc | Contain lists of expressions that describe to the debugger the location of a variable based on the PC value. |
| .debug_line | Contain a description of the mapping from PC values to source locations. |
| .debug_abbrev | Provide the definitions for abbreviation codes used in describing the debug info in the .debug_info and .debug_types sections. |
| .debug_pubnames | Is an index to help fetching of symbol debug information without having to scan object files. |
| .debug_pubtypes | Is an index to help fetching of type information. |
References
- "Debugging Options (Using the GNU Compiler Collection (GCC))". gcc.gnu.org.
- "Dwarf Extensions". gcc.gnu.org.
- You, Ilsun; Youn, Taek-Young (2023-02-03). Information Security Applications: 23rd International Conference, WISA 2022, Jeju Island, South Korea, August 24–26, 2022, Revised Selected Papers. Springer Nature. ISBN 978-3-031-25659-2.
- "ELF section retrieval with debuginfod". www.redhat.com. Retrieved 2023-09-25.
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