+/* Return the section that should be marked against GC for a given
+ relocation. */
+
+static asection *
+elf64_alpha_gc_mark_hook (asection *sec, struct bfd_link_info *info,
+ Elf_Internal_Rela *rel,
+ struct elf_link_hash_entry *h, Elf_Internal_Sym *sym)
+{
+ /* These relocations don't really reference a symbol. Instead we store
+ extra data in their addend slot. Ignore the symbol. */
+ switch (ELF64_R_TYPE (rel->r_info))
+ {
+ case R_ALPHA_LITUSE:
+ case R_ALPHA_GPDISP:
+ case R_ALPHA_HINT:
+ return NULL;
+ }
+
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
+}
+
+/* Update the got entry reference counts for the section being removed. */
+
+static bfd_boolean
+elf64_alpha_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct alpha_elf_link_hash_entry **sym_hashes;
+ const Elf_Internal_Rela *rel, *relend;
+
+ if (info->relocatable)
+ return TRUE;
+
+ symtab_hdr = &elf_symtab_hdr (abfd);
+ sym_hashes = alpha_elf_sym_hashes (abfd);
+
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; rel++)
+ {
+ unsigned long r_symndx, r_type;
+ struct alpha_elf_link_hash_entry *h = NULL;
+ struct alpha_elf_got_entry *gotent;
+
+ r_symndx = ELF64_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.root.type == bfd_link_hash_indirect
+ || h->root.root.type == bfd_link_hash_warning)
+ h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link;
+ }
+
+ r_type = ELF64_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_ALPHA_LITERAL:
+ /* ??? Ignore re-computation of gotent_flags. We're not
+ carrying a use-count for each bit in that mask. */
+
+ case R_ALPHA_TLSGD:
+ case R_ALPHA_GOTDTPREL:
+ case R_ALPHA_GOTTPREL:
+ /* Fetch the got entry from the tables. */
+ gotent = get_got_entry (abfd, h, r_type, r_symndx, rel->r_addend);
+
+ /* The got entry *must* exist, since we should have created it
+ before during check_relocs. Also note that get_got_entry
+ assumed this was going to be another use, and so incremented
+ the use count again. Thus the use count must be at least the
+ one real use and the "use" we just added. */
+ if (gotent == NULL || gotent->use_count < 2)
+ {
+ abort ();
+ return FALSE;
+ }
+ gotent->use_count -= 2;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
projects / binutils-gdb.git / blobdiff