SHF_GROUP flag set on a section indicates that it is part of a section group and that if the section is removed, the other sections in the same group should be removed as well [1]. Since section group are guide for the linking process, they do not have any meaning after linking has occured. TCC rightfully [2] discard such sections (by not recognizing the section type) but keeps the SHF_GROUP flag set on sections that were part of a section group which confuses binutils (objdump and gdb at least). Clearing that bit makes objdump and gdb accept binaries created by TCC. [1] https://docs.oracle.com/cd/E19683-01/816-1386/chapter7-26/index.html [2] GNU ld does the same
Unified · Split
| @@ -3047,7 +3047,7 @@ ST_FUNC int tcc_load_object_file(TCCState *s1, · 3046 unmodified lines | |||
| 3047 | } | 3047 | } |
| 3048 | } | 3048 | } |
| 3049 | /* not found: create new section */ | 3049 | /* not found: create new section */ |
| 3050 | s = new_section(s1, sh_name, sh->sh_type, sh->sh_flags); | 3050 | s = new_section(s1, sh_name, sh->sh_type, sh->sh_flags & ~SHF_GROUP); |
| 3051 | /* take as much info as possible from the section. sh_link and | 3051 | /* take as much info as possible from the section. sh_link and |
| 3052 | sh_info will be updated later */ | 3052 | sh_info will be updated later */ |
| 3053 | s->sh_addralign = sh->sh_addralign; | 3053 | s->sh_addralign = sh->sh_addralign; |