| |
| On 4 Apr 06, the debuginfo reader (m_debuginfo) was majorly cleaned up |
| and restructured. It has been a bit of a tangle for a while. On 18 Sep 14 |
| the STABS support was completely removed. The new structure looks like this: |
| |
| debuginfo.c |
| |
| readelf.c |
| |
| readdwarf.c |
| |
| storage.c |
| |
| Each .c can only call those below it on the page. |
| |
| storage.c contains the SegInfo structure and stuff for |
| maintaining/searching arrays of symbols, line-numbers, and Dwarf CF |
| info records. |
| |
| readdwarf.c parses the relevant kind of info and call storage.c to |
| store the results. |
| |
| readelf.c reads ELF format, hands syms directly to storage.c, |
| then delegates to readdwarf.c for debug info. All straightforward. |
| |
| debuginfo.c is the top-level file, and is quite small. |
| |
| There are 2 goals to this: |
| |
| (1) Generally tidy up something which needs tidying up |
| |
| (2) Introduce more modularity, so as to make it easier to add |
| readers for other formats, if needed |
| |
| Rationale for (1) and (2) are obvious. |
| |
| Originally there was also goal (3) Simplify the stabs reader. |
| But stabs support was broken since 3.9.0 and completely removed in 3.10.0. |
| |
| The worst thing is that it is the stabs type reader that was crashing, |
| not the stabs line-number reader. |
| Old versions of the stabs type reader can be found in the subversion repository |
| as m_debuginfo/UNUSED_STABS.txt, the stabs line-number reader was in |
| m_debuginfo/readstabs.c. The old version of this file explained more |
| about the setup. |
