https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105169
Michael Matz <matz at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |matz at gcc dot gnu.org --- Comment #8 from Michael Matz <matz at gcc dot gnu.org> --- Something like this would be needed. It's proof-of-concept. It actually just copy-pastes code from default_function_rodata_section without proper integration and caring for other cases handled there. To be done properly it would need abstracting what default_function_rodata_section does, just with a choosable prefix. Additionally the whole section dealing in GCC should be changed such that internally not the section name is the only differentiator for the section hash table: currently that's the reason the comdat name has to be appended to the section name, although ELF doesn't need this for comdat sections. So, terrible hack, but ... diff --git a/gcc/targhooks.c b/gcc/targhooks.c index c9b5208853d..1ca5a4c3592 100644 --- a/gcc/targhooks.c +++ b/gcc/targhooks.c @@ -1963,14 +1963,36 @@ default_print_patchable_function_entry_1 (FILE *file, char buf[256]; static int patch_area_number; section *previous_section = in_section; + section *sect; const char *asm_op = integer_asm_op (POINTER_SIZE_UNITS, false); gcc_assert (asm_op != NULL); patch_area_number++; ASM_GENERATE_INTERNAL_LABEL (buf, "LPFE", patch_area_number); - switch_to_section (get_section ("__patchable_function_entries", - flags, current_function_decl)); + if (DECL_COMDAT_GROUP (current_function_decl) && HAVE_COMDAT_GROUP) + { + const char *dot; + size_t len; + char* rname; + const char *sname = "__patchable_function_entries"; + const char *name = DECL_SECTION_NAME (current_function_decl); + + dot = strchr (name + 1, '.'); + if (!dot) + dot = name; + len = strlen (dot) + strlen (sname) + 1; + rname = (char *) alloca (len); + + strcpy (rname, sname); + strcat (rname, dot); + sect = get_section (rname, (SECTION_LINKONCE | flags), + current_function_decl); + } + else + sect = get_section ("__patchable_function_entries", flags, + current_function_decl); + switch_to_section (sect); assemble_align (POINTER_SIZE); fputs (asm_op, file); assemble_name_raw (file, buf);