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
-cris_elf_gc_sweep_hook (bfd *abfd,
- struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
-{
- struct elf_cris_link_hash_table * htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_signed_vma *local_got_refcounts;
- const Elf_Internal_Rela *rel, *relend;
- bfd *dynobj;
- asection *sgot;
- asection *srelgot;
-
- if (bfd_link_relocatable (info))
- return TRUE;
-
- dynobj = elf_hash_table (info)->dynobj;
- if (dynobj == NULL)
- return TRUE;
-
- htab = elf_cris_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
-
- sgot = htab->root.sgot;
- srelgot = htab->root.srelgot;
-
- relend = relocs + sec->reloc_count;
- for (rel = relocs; rel < relend; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h = NULL;
- bfd_signed_vma got_element_size = 4;
- bfd_signed_vma *specific_refcount = NULL;
- enum elf_cris_reloc_type r_type;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- }
-
- r_type = ELF32_R_TYPE (rel->r_info);
- switch (r_type)
- {
- case R_CRIS_32_GOT:
- case R_CRIS_16_GOT:
- case R_CRIS_16_GOTPLT:
- case R_CRIS_32_GOTPLT:
- specific_refcount = h != NULL
- ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
- : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
- break;
-
- case R_CRIS_32_GD:
- case R_CRIS_32_GOT_GD:
- case R_CRIS_16_GOT_GD:
- got_element_size = 8;
- specific_refcount = h != NULL
- ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
- : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
- break;
-
- case R_CRIS_32_IE:
- case R_CRIS_16_GOT_TPREL:
- case R_CRIS_32_GOT_TPREL:
- specific_refcount = h != NULL
- ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
- : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
- break;
-
- default:
- break;
- }
-
- switch (r_type)
- {
- case R_CRIS_32_IE:
- case R_CRIS_32_GD:
- case R_CRIS_16_GOT_TPREL:
- case R_CRIS_32_GOT_TPREL:
- case R_CRIS_32_GOT_GD:
- case R_CRIS_16_GOT_GD:
- case R_CRIS_16_GOT:
- case R_CRIS_32_GOT:
- if (h != NULL)
- {
- /* If the counters are 0 when we got here, we've
- miscounted somehow somewhere, an internal error. */
- BFD_ASSERT (h->got.refcount > 0);
- --h->got.refcount;
-
- BFD_ASSERT (*specific_refcount > 0);
- --*specific_refcount;
- if (*specific_refcount == 0)
- {
- /* We don't need the .got entry any more. */
- sgot->size -= got_element_size;
- srelgot->size -= sizeof (Elf32_External_Rela);
- }
- break;
- }
-
- local_got_reloc:
- if (local_got_refcounts != NULL)
- {
- /* If the counters are 0 when we got here, we've
- miscounted somehow somewhere, an internal error. */
- BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
- --local_got_refcounts[r_symndx];
-
- BFD_ASSERT (*specific_refcount > 0);
- --*specific_refcount;
- if (*specific_refcount == 0)
- {
- /* We don't need the .got entry any more. */
- sgot->size -= got_element_size;
- if (bfd_link_pic (info))
- srelgot->size -= sizeof (Elf32_External_Rela);
- }
- }
- break;
-
- case R_CRIS_16_GOTPLT:
- case R_CRIS_32_GOTPLT:
- /* For local symbols, treat these like GOT relocs. */
- if (h == NULL)
- goto local_got_reloc;
- else
- /* For global symbols, adjust the reloc-specific refcount. */
- elf_cris_hash_entry (h)->gotplt_refcount--;
- /* Fall through. */
-
- case R_CRIS_32_PLT_GOTREL:
- /* FIXME: We don't garbage-collect away the .got section. */
- if (local_got_refcounts != NULL)
- local_got_refcounts[-1]--;
- /* Fall through. */
-
- case R_CRIS_8:
- case R_CRIS_16:
- case R_CRIS_32:
- case R_CRIS_8_PCREL:
- case R_CRIS_16_PCREL:
- case R_CRIS_32_PCREL:
- case R_CRIS_32_PLT_PCREL:
- /* Negate the increment we did in cris_elf_check_relocs. */
- if (h != NULL)
- {
- if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- && h->plt.refcount > 0)
- --h->plt.refcount;
- }
- break;
-
- case R_CRIS_32_DTPREL:
- /* This'd be a .dtpreld entry in e.g. debug info. */
- if ((sec->flags & SEC_ALLOC) == 0)
- break;
- /* Fall through. */
- case R_CRIS_16_DTPREL:
- htab->dtpmod_refcount--;
- if (htab->dtpmod_refcount == 0)
- htab->next_gotplt_entry -= 8;
- BFD_ASSERT (local_got_refcounts != NULL);
- local_got_refcounts[-1]--;
- break;
-
- default:
- break;
- }
- }
-
- return TRUE;
-}
-
/* The elf_backend_plt_sym_val hook function. */
static bfd_vma
#define elf_info_to_howto cris_info_to_howto_rela
#define elf_backend_relocate_section cris_elf_relocate_section
#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
#define elf_backend_plt_sym_val cris_elf_plt_sym_val
#define elf_backend_check_relocs cris_elf_check_relocs
#define elf_backend_grok_prstatus cris_elf_grok_prstatus
projects / deliverable / binutils-gdb.git / blobdiff