diff options
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 12 | ||||
| -rw-r--r-- | bfd/elf64-ppc.c | 85 |
2 files changed, 85 insertions, 12 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 31613e8..044d95e 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,11 @@ +2011-03-10 Alan Modra <amodra@gmail.com> + + * elf64-ppc.c (bfd_elf64_bfd_link_just_syms): Define. + (ppc64_elf_link_just_syms): New function. + (opd_entry_value): Don't assume big-endian host. + (get_r2off): New function. + (ppc_build_one_stub, ppc_size_one_stub): Use it here. + 2011-03-06 Michael Snyder <msnyder@vmware.com> * compress.c (bfd_compress_section_contents): Check for out of mem. @@ -33,8 +41,8 @@ 2011-03-02 Bernd Schmidt <bernds@codesourcery.com> - * elflink.c (is_reloc_section): Remove function. - (get_dynamic_reloc_section_name): Construct string manually. + * elflink.c (is_reloc_section): Remove function. + (get_dynamic_reloc_section_name): Construct string manually. 2011-02-28 Kai Tietz <kai.tietz@onevision.com> diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index 856c68a..4c35757 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -79,12 +79,13 @@ static bfd_vma opd_entry_value #define bfd_elf64_mkobject ppc64_elf_mkobject #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup -#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup +#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab +#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms #define elf_backend_object_p ppc64_elf_object_p #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus @@ -4745,6 +4746,25 @@ ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, return TRUE; } +/* If --just-symbols against a final linked binary, then assume we need + toc adjusting stubs when calling functions defined there. */ + +static void +ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) +{ + if ((sec->flags & SEC_CODE) != 0 + && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 + && is_ppc64_elf (sec->owner)) + { + asection *got = bfd_get_section_by_name (sec->owner, ".got"); + if (got != NULL + && got->size >= elf_backend_got_header_size + && bfd_get_section_by_name (sec->owner, ".opd") != NULL) + sec->has_toc_reloc = 1; + } + _bfd_elf_link_just_syms (sec, info); +} + static struct plt_entry ** update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, unsigned long r_symndx, bfd_vma r_addend, int tls_type) @@ -5465,9 +5485,12 @@ opd_entry_value (asection *opd_sec, /* No relocs implies we are linking a --just-symbols object. */ if (opd_sec->reloc_count == 0) { - if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) + char buf[8]; + + if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8)) return (bfd_vma) -1; + val = bfd_get_64 (opd_bfd, buf); if (code_sec != NULL) { asection *sec, *likely = NULL; @@ -9401,6 +9424,37 @@ get_relocs (asection *sec, int count) return relocs; } +static bfd_vma +get_r2off (struct ppc_link_hash_table *htab, + struct ppc_stub_hash_entry *stub_entry) +{ + bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; + + if (r2off == 0) + { + /* Support linking -R objects. Get the toc pointer from the + opd entry. */ + char buf[8]; + asection *opd = stub_entry->h->elf.root.u.def.section; + bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; + + if (strcmp (opd->name, ".opd") != 0 + || opd->reloc_count != 0) + { + (*_bfd_error_handler) (_("cannot find opd entry toc for %s"), + stub_entry->h->elf.root.root.string); + bfd_set_error (bfd_error_bad_value); + return 0; + } + if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) + return 0; + r2off = bfd_get_64 (opd->owner, buf); + r2off -= elf_gp (stub_entry->id_sec->output_section->owner); + } + r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; + return r2off; +} + static bfd_boolean ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) { @@ -9445,10 +9499,13 @@ ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) size = 4; if (stub_entry->stub_type == ppc_stub_long_branch_r2off) { - bfd_vma r2off; + bfd_vma r2off = get_r2off (htab, stub_entry); - r2off = (htab->stub_group[stub_entry->target_section->id].toc_off - - htab->stub_group[stub_entry->id_sec->id].toc_off); + if (r2off == 0) + { + htab->stub_error = TRUE; + return FALSE; + } bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); loc += 4; size = 12; @@ -9632,10 +9689,14 @@ ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) } else { - bfd_vma r2off; + bfd_vma r2off = get_r2off (htab, stub_entry); + + if (r2off == 0) + { + htab->stub_error = TRUE; + return FALSE; + } - r2off = (htab->stub_group[stub_entry->target_section->id].toc_off - - htab->stub_group[stub_entry->id_sec->id].toc_off); bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); loc += 4; size = 20; @@ -9875,8 +9936,12 @@ ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) size = 4; if (stub_entry->stub_type == ppc_stub_long_branch_r2off) { - r2off = (htab->stub_group[stub_entry->target_section->id].toc_off - - htab->stub_group[stub_entry->id_sec->id].toc_off); + r2off = get_r2off (htab, stub_entry); + if (r2off == 0) + { + htab->stub_error = TRUE; + return FALSE; + } size = 12; if (PPC_HA (r2off) != 0) size = 16; |