From 4025353c276c5dce0358199e59379a1ca6e72bbb Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Mon, 9 Aug 2004 00:22:53 +0000 Subject: [PATCH] * elf64-ppc.c (get_opd_info): New function. (adjust_opd_syms): Use get_opd_info. Define removed symbols as zero. (ppc64_elf_edit_opd): Use get_opd_info. Check that sym has a dot before calling get_fdh. Test fdh rather than h before dereferencing fdh. Mark removed symbols in opd_adjust. (ppc64_elf_tls_optimize): Don't bother with opd adjustment here. (ppc64_elf_relocate_section): Use get_opd_info, and handle removed opd symbols. (ppc64_elf_output_symbol_hook): Likewise. --- bfd/ChangeLog | 12 +++++++ bfd/elf64-ppc.c | 92 ++++++++++++++++++++++++++++++------------------- 2 files changed, 68 insertions(+), 36 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 42132adf014..1d3d30521c4 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,15 @@ +2004-08-09 Alan Modra + + * elf64-ppc.c (get_opd_info): New function. + (adjust_opd_syms): Use get_opd_info. Define removed symbols as zero. + (ppc64_elf_edit_opd): Use get_opd_info. Check that sym has a dot + before calling get_fdh. Test fdh rather than h before dereferencing + fdh. Mark removed symbols in opd_adjust. + (ppc64_elf_tls_optimize): Don't bother with opd adjustment here. + (ppc64_elf_relocate_section): Use get_opd_info, and handle removed + opd symbols. + (ppc64_elf_output_symbol_hook): Likewise. + 2004-08-06 Paul Brook * elfarm-nabi.c (elf32_arm_howto_table): Add new EABI relocations. diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index d269b9f8d60..1adb7a50dfa 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -2492,6 +2492,16 @@ ppc64_elf_new_section_hook (bfd *abfd, asection *sec) return _bfd_elf_new_section_hook (abfd, sec); } + +static void * +get_opd_info (asection * sec) +{ + if (sec != NULL + && ppc64_elf_section_data (sec) != NULL + && ppc64_elf_section_data (sec)->opd.adjust != NULL) + return ppc64_elf_section_data (sec)->opd.adjust; + return NULL; +} /* The following functions are specific to the ELF linker, while functions above are used generally. Those named ppc64_elf_* are @@ -4935,11 +4945,19 @@ adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) return TRUE; sym_sec = eh->elf.root.u.def.section; - if (sym_sec != NULL - && elf_section_data (sym_sec) != NULL - && (opd_adjust = ppc64_elf_section_data (sym_sec)->opd.adjust) != NULL) + opd_adjust = get_opd_info (sym_sec); + if (opd_adjust != NULL) { eh->elf.root.u.def.value += opd_adjust[eh->elf.root.u.def.value / 24]; + long adjust = opd_adjust[eh->elf.root.u.def.value / 24]; + if (adjust == -1) + { + /* This entry has been deleted. */ + eh->elf.root.u.def.value = 0; + eh->elf.root.u.def.section = &bfd_abs_section; + } + else + eh->elf.root.u.def.value += adjust; eh->adjust_done = 1; } return TRUE; @@ -4966,7 +4984,7 @@ ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info) struct elf_link_hash_entry **sym_hashes; bfd_vma offset; bfd_size_type amt; - long *adjust; + long *opd_adjust; bfd_boolean need_edit; sec = bfd_get_section_by_name (ibfd, ".opd"); @@ -4974,15 +4992,15 @@ ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info) continue; amt = sec->size * sizeof (long) / 24; - adjust = ppc64_elf_section_data (sec)->opd.adjust; - if (adjust == NULL) + opd_adjust = get_opd_info (sec); + if (opd_adjust == NULL) { /* Must be a ld -r link. ie. check_relocs hasn't been called. */ - adjust = bfd_zalloc (obfd, amt); - ppc64_elf_section_data (sec)->opd.adjust = adjust; + opd_adjust = bfd_zalloc (obfd, amt); + ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; } - memset (adjust, 0, amt); + memset (opd_adjust, 0, amt); if (sec->output_section == bfd_abs_section_ptr) continue; @@ -5134,7 +5152,8 @@ ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info) if (rel->r_offset == offset) { struct ppc_link_hash_entry *fdh = NULL; - if (h != NULL) + if (h != NULL + && h->root.root.string[0] == '.') fdh = get_fdh ((struct ppc_link_hash_entry *) h, ppc_hash_table (info)); @@ -5142,19 +5161,20 @@ ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info) || sym_sec->output_section == bfd_abs_section_ptr); if (skip) { - if (h != NULL && sym_sec->owner == ibfd) + if (fdh != NULL && sym_sec->owner == ibfd) { /* Arrange for the function descriptor sym to be dropped. */ fdh->elf.root.u.def.value = 0; fdh->elf.root.u.def.section = sym_sec; } + opd_adjust[rel->r_offset / 24] = -1; } else { /* We'll be keeping this opd entry. */ - if (h != NULL) + if (fdh != NULL) { /* Redefine the function descriptor symbol to this location in the opd section. It is @@ -5173,7 +5193,7 @@ ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info) for the function descriptor sym which we don't have at the moment. So keep an array of adjustments. */ - adjust[rel->r_offset / 24] = wptr - rptr; + opd_adjust[rel->r_offset / 24] = wptr - rptr; if (wptr != rptr) memcpy (wptr, rptr, 24); @@ -5345,17 +5365,9 @@ ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) value = h->root.u.def.value; } else - { - value = sym->st_value; - - if (elf_section_data (sym_sec) != NULL) - { - long *adjust; - adjust = ppc64_elf_section_data (sym_sec)->opd.adjust; - if (adjust != NULL) - value += adjust[value / 24]; - } - } + /* Symbols referenced by TLS relocs must be of type + STT_TLS. So no need for .opd local sym adjust. */ + value = sym->st_value; ok_tprel = FALSE; is_local = FALSE; @@ -7455,18 +7467,21 @@ ppc64_elf_relocate_section (bfd *output_bfd, if (r_symndx < symtab_hdr->sh_info) { /* It's a local symbol. */ + long *opd_adjust; + sym = local_syms + r_symndx; sec = local_sections[r_symndx]; sym_name = bfd_elf_local_sym_name (input_bfd, sym); sym_type = ELF64_ST_TYPE (sym->st_info); relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - if (elf_section_data (sec) != NULL) + opd_adjust = get_opd_info (sec); + if (opd_adjust != NULL) { - long *opd_sym_adjust; - - opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust; - if (opd_sym_adjust != NULL) - relocation += opd_sym_adjust[sym->st_value / 24]; + long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 24]; + if (adjust == -1) + relocation = 0; + else + relocation += adjust; } } else @@ -8745,20 +8760,25 @@ ppc64_elf_output_symbol_hook (struct bfd_link_info *info, asection *input_sec, struct elf_link_hash_entry *h) { - long *adjust; + long *opd_adjust, adjust; bfd_vma value; - if (h != NULL - || input_sec == NULL - || ppc64_elf_section_data (input_sec) == NULL - || (adjust = ppc64_elf_section_data (input_sec)->opd.adjust) == NULL) + if (h != NULL) + return TRUE; + + opd_adjust = get_opd_info (input_sec); + if (opd_adjust == NULL) return TRUE; value = elfsym->st_value - input_sec->output_offset; if (!info->relocatable) value -= input_sec->output_section->vma; - elfsym->st_value += adjust[value / 24]; + adjust = opd_adjust[value / 24]; + if (adjust == -1) + elfsym->st_value = 0; + else + elfsym->st_value += adjust; return TRUE; } -- 2.30.2