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);
