diff options
Diffstat (limited to 'bfd/elf64-ppc.c')
| -rw-r--r-- | bfd/elf64-ppc.c | 321 |
1 files changed, 235 insertions, 86 deletions
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index d744990..f154658 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -1874,6 +1874,20 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ + HOWTO (R_PPC64_JMP_IREL, /* type */ + 0, /* rightshift */ + 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ + 0, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc64_elf_unhandled_reloc, /* special_function */ + "R_PPC64_JMP_IREL", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + HOWTO (R_PPC64_IRELATIVE, /* type */ 0, /* rightshift */ 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ @@ -1888,6 +1902,67 @@ static reloc_howto_type ppc64_elf_howto_raw[] = { ONES (64), /* dst_mask */ FALSE), /* pcrel_offset */ + /* A 16 bit relative relocation. */ + HOWTO (R_PPC64_REL16, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC64_REL16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* A 16 bit relative relocation without overflow. */ + HOWTO (R_PPC64_REL16_LO, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont,/* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC64_REL16_LO", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* The high order 16 bits of a relative address. */ + HOWTO (R_PPC64_REL16_HI, /* type */ + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_PPC64_REL16_HI", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* The high order 16 bits of a relative address, plus 1 if the contents of + the low 16 bits, treated as a signed number, is negative. */ + HOWTO (R_PPC64_REL16_HA, /* type */ + 16, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + ppc64_elf_ha_reloc, /* special_function */ + "R_PPC64_REL16_HA", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + /* GNU extension to record C++ vtable hierarchy. */ HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ 0, /* rightshift */ @@ -2156,6 +2231,14 @@ ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, break; case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; break; + case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; + break; + case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; + break; + case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; + break; + case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; + break; case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; break; case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; @@ -4763,6 +4846,29 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, tls_type = 0; ifunc = NULL; + if (h != NULL) + { + if (h->type == STT_GNU_IFUNC) + { + h->needs_plt = 1; + ifunc = &h->plt.plist; + } + } + else + { + Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, + abfd, r_symndx); + if (isym == NULL) + return FALSE; + + if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) + { + ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, + rel->r_addend, PLT_IFUNC); + if (ifunc == NULL) + return FALSE; + } + } r_type = ELF64_R_TYPE (rel->r_info); if (is_branch_reloc (r_type)) { @@ -4780,29 +4886,6 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, } /* STT_GNU_IFUNC symbols must have a PLT entry. */ - if (h != NULL) - { - if (h->type == STT_GNU_IFUNC) - { - h->needs_plt = 1; - ifunc = &h->plt.plist; - } - } - else - { - Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, - abfd, r_symndx); - if (isym == NULL) - return FALSE; - - if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) - { - ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, - rel->r_addend, PLT_IFUNC); - if (ifunc == NULL) - return FALSE; - } - } if (ifunc != NULL && !update_plt_info (abfd, ifunc, rel->r_addend)) return FALSE; @@ -4944,6 +5027,12 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, break; /* Nor do these. */ + case R_PPC64_REL16: + case R_PPC64_REL16_LO: + case R_PPC64_REL16_HI: + case R_PPC64_REL16_HA: + break; + case R_PPC64_TOC16: case R_PPC64_TOC16_LO: case R_PPC64_TOC16_HI: @@ -5194,7 +5283,9 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, && !info->shared && h != NULL && (h->root.type == bfd_link_hash_defweak - || !h->def_regular))) + || !h->def_regular)) + || (!info->shared + && ifunc != NULL)) { struct ppc_dyn_relocs *p; struct ppc_dyn_relocs **head; @@ -7990,7 +8081,8 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) for (pent = h->plt.plist; pent != NULL; pent = pent->next) if (pent->plt.refcount > 0) { - if (!htab->elf.dynamic_sections_created) + if (!htab->elf.dynamic_sections_created + || h->dynindx == -1) { s = htab->iplt; pent->plt.offset = s->size; @@ -8069,12 +8161,14 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) if (gent->got.refcount > 0) { bfd_boolean dyn; + asection *rsec; /* Make sure this symbol is output as a dynamic symbol. Undefined weak syms won't yet be marked as dynamic, nor will all TLS symbols. */ if (h->dynindx == -1 && !h->forced_local + && h->type != STT_GNU_IFUNC && htab->elf.dynamic_sections_created) { if (! bfd_elf_link_record_dynamic_symbol (info, h)) @@ -8097,20 +8191,25 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) s->size += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; dyn = htab->elf.dynamic_sections_created; + rsec = NULL; if ((info->shared || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT || h->root.type != bfd_link_hash_undefweak)) - ppc64_elf_tdata (gent->owner)->relgot->size - += (gent->tls_type & eh->tls_mask & TLS_GD - ? 2 * sizeof (Elf64_External_Rela) - : sizeof (Elf64_External_Rela)); + rsec = ppc64_elf_tdata (gent->owner)->relgot; + else if (h->type == STT_GNU_IFUNC) + rsec = htab->reliplt; + if (rsec != NULL) + rsec->size += (gent->tls_type & eh->tls_mask & TLS_GD + ? 2 * sizeof (Elf64_External_Rela) + : sizeof (Elf64_External_Rela)); } else gent->got.offset = (bfd_vma) -1; if (eh->dyn_relocs == NULL - || !htab->elf.dynamic_sections_created) + || (!htab->elf.dynamic_sections_created + && h->type != STT_GNU_IFUNC)) return TRUE; /* In the shared -Bsymbolic case, discard space allocated for @@ -8160,6 +8259,11 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) } } } + else if (h->type == STT_GNU_IFUNC) + { + if (!h->non_got_ref) + eh->dyn_relocs = NULL; + } else if (ELIMINATE_COPY_RELOCS) { /* For the non-shared case, discard space for relocs against @@ -8193,6 +8297,8 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) for (p = eh->dyn_relocs; p != NULL; p = p->next) { asection *sreloc = elf_section_data (p->sec)->sreloc; + if (!htab->elf.dynamic_sections_created) + sreloc = htab->reliplt; sreloc->size += p->count * sizeof (Elf64_External_Rela); } @@ -8291,6 +8397,8 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, else if (p->count != 0) { srel = elf_section_data (p->sec)->sreloc; + if (!htab->elf.dynamic_sections_created) + srel = htab->reliplt; srel->size += p->count * sizeof (Elf64_External_Rela); if ((p->sec->output_section->flags & SEC_READONLY) != 0) info->flags |= DF_TEXTREL; @@ -8324,19 +8432,15 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, } else { + unsigned int num = 1; ent->got.offset = s->size; if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) - { - s->size += 16; - if (info->shared) - srel->size += 2 * sizeof (Elf64_External_Rela); - } - else - { - s->size += 8; - if (info->shared) - srel->size += sizeof (Elf64_External_Rela); - } + num = 2; + s->size += num * 8; + if (info->shared) + srel->size += num * sizeof (Elf64_External_Rela); + else if ((*lgot_masks & PLT_IFUNC) != 0) + htab->reliplt->size += num * sizeof (Elf64_External_Rela); } } else @@ -8356,7 +8460,7 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, ent->plt.offset = s->size; s->size += PLT_ENTRY_SIZE; - htab->reliplt += sizeof (Elf64_External_Rela); + htab->reliplt->size += sizeof (Elf64_External_Rela); } else ent->plt.offset = (bfd_vma) -1; @@ -9029,7 +9133,9 @@ ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) abort (); plt = htab->plt; - if (!htab->elf.dynamic_sections_created) + if (!htab->elf.dynamic_sections_created + || stub_entry->h == NULL + || stub_entry->h->elf.dynindx == -1) plt = htab->iplt; dest += plt->output_offset + plt->output_section->vma; @@ -9041,20 +9147,15 @@ ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) bfd_byte *rl; rela.r_offset = dest; - rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); + rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); rela.r_addend = (stub_entry->target_value + stub_entry->target_section->output_offset + stub_entry->target_section->output_section->vma); - if (!htab->elf.dynamic_sections_created) - rl = (htab->reliplt->contents - + (stub_entry->plt_ent->plt.offset - / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); - else - rl = (htab->relplt->contents - + ((stub_entry->plt_ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) - / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); - bfd_elf32_swap_reloca_out (info->output_bfd, &rela, rl); + rl = (htab->reliplt->contents + + (htab->reliplt->reloc_count++ + * sizeof (Elf64_External_Rela))); + bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); stub_entry->plt_ent->plt.offset |= 1; } @@ -9162,7 +9263,9 @@ ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) if (off >= (bfd_vma) -2) abort (); plt = htab->plt; - if (!htab->elf.dynamic_sections_created) + if (!htab->elf.dynamic_sections_created + || stub_entry->h == NULL + || stub_entry->h->elf.dynindx == -1) plt = htab->iplt; off += (plt->output_offset + plt->output_section->vma @@ -11093,7 +11196,9 @@ ppc64_elf_relocate_section (bfd *output_bfd, && sec->output_section != NULL && sec->id <= htab->top_id && (htab->stub_group[sec->id].toc_off - != htab->stub_group[input_section->id].toc_off))) + != htab->stub_group[input_section->id].toc_off)) + || (h == NULL + && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab)) != NULL && (stub_entry->stub_type == ppc_stub_plt_call @@ -11377,14 +11482,23 @@ ppc64_elf_relocate_section (bfd *output_bfd, /* Generate relocs for the dynamic linker, except in the case of TLSLD where we'll use one entry per module. */ - asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; + asection *relgot; + bfd_boolean ifunc; *offp = off | 1; + relgot = NULL; + ifunc = (h != NULL + ? h->elf.type == STT_GNU_IFUNC + : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); if ((info->shared || indx != 0) && (offp == &ppc64_tlsld_got (input_bfd)->offset || h == NULL || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT || h->elf.root.type != bfd_link_hash_undefweak)) + relgot = ppc64_elf_tdata (input_bfd)->relgot; + else if (ifunc) + relgot = htab->reliplt; + if (relgot != NULL) { outrel.r_offset = (got->output_section->vma + got->output_offset @@ -11411,9 +11525,14 @@ ppc64_elf_relocate_section (bfd *output_bfd, outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); else if (tls_type == (TLS_TLS | TLS_TPREL)) outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); - else if (indx == 0) + else if (indx != 0) + outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); + else { - outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); + if (ifunc) + outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); + else + outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); /* Write the .got section contents for the sake of prelink. */ @@ -11421,8 +11540,6 @@ ppc64_elf_relocate_section (bfd *output_bfd, bfd_put_64 (output_bfd, outrel.r_addend + relocation, loc); } - else - outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) { @@ -11541,6 +11658,12 @@ ppc64_elf_relocate_section (bfd *output_bfd, addend -= sec->output_section->vma; break; + case R_PPC64_REL16: + case R_PPC64_REL16_LO: + case R_PPC64_REL16_HI: + case R_PPC64_REL16_HA: + break; + case R_PPC64_REL14: case R_PPC64_REL14_BRNTAKEN: case R_PPC64_REL14_BRTAKEN: @@ -11633,7 +11756,11 @@ ppc64_elf_relocate_section (bfd *output_bfd, && h != NULL && h->elf.dynindx != -1 && !h->elf.non_got_ref - && !h->elf.def_regular)) + && !h->elf.def_regular) + || (!info->shared + && (h != NULL + ? h->elf.type == STT_GNU_IFUNC + : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) { Elf_Internal_Rela outrel; bfd_boolean skip, relocate; @@ -11698,19 +11825,42 @@ ppc64_elf_relocate_section (bfd *output_bfd, entry in this lib. */ unresolved_reloc = FALSE; } - outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); + if (!is_opd + && r_type == R_PPC64_ADDR64 + && (h != NULL + ? h->elf.type == STT_GNU_IFUNC + : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) + outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); + else + { + outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); - /* We need to relocate .opd contents for ld.so. - Prelink also wants simple and consistent rules - for relocs. This make all RELATIVE relocs have - *r_offset equal to r_addend. */ - relocate = TRUE; + /* We need to relocate .opd contents for ld.so. + Prelink also wants simple and consistent rules + for relocs. This make all RELATIVE relocs have + *r_offset equal to r_addend. */ + relocate = TRUE; + } } else { long indx = 0; - if (r_symndx == 0 || bfd_is_abs_section (sec)) + if (h != NULL + ? h->elf.type == STT_GNU_IFUNC + : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) + { + (*_bfd_error_handler) + (_("%B(%A+0x%lx): relocation %s for indirect " + "function %s unsupported"), + input_bfd, + input_section, + (long) rel->r_offset, + ppc64_elf_howto_table[r_type]->name, + sym_name); + ret = FALSE; + } + else if (r_symndx == 0 || bfd_is_abs_section (sec)) ; else if (sec == NULL || sec->owner == NULL) { @@ -11748,6 +11898,8 @@ ppc64_elf_relocate_section (bfd *output_bfd, } sreloc = elf_section_data (input_section)->sreloc; + if (!htab->elf.dynamic_sections_created) + sreloc = htab->reliplt; if (sreloc == NULL) abort (); @@ -11789,6 +11941,7 @@ ppc64_elf_relocate_section (bfd *output_bfd, case R_PPC64_COPY: case R_PPC64_GLOB_DAT: case R_PPC64_JMP_SLOT: + case R_PPC64_JMP_IREL: case R_PPC64_RELATIVE: /* We shouldn't ever see these dynamic relocs in relocatable files. */ @@ -11821,6 +11974,7 @@ ppc64_elf_relocate_section (bfd *output_bfd, break; case R_PPC64_ADDR16_HA: + case R_PPC64_REL16_HA: case R_PPC64_ADDR16_HIGHERA: case R_PPC64_ADDR16_HIGHESTA: case R_PPC64_TOC16_HA: @@ -12037,14 +12191,6 @@ ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, { /* This symbol has an entry in the procedure linkage table. Set it up. */ - asection *plt = htab->plt; - if (!htab->elf.dynamic_sections_created) - plt = htab->iplt; - - rela.r_offset = (plt->output_section->vma - + plt->output_offset - + ent->plt.offset); - if (!htab->elf.dynamic_sections_created || h->dynindx == -1) { @@ -12052,26 +12198,29 @@ ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, && h->def_regular && (h->root.type == bfd_link_hash_defined || h->root.type == bfd_link_hash_defweak)); - rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); + rela.r_offset = (htab->iplt->output_section->vma + + htab->iplt->output_offset + + ent->plt.offset); + rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); rela.r_addend = (h->root.u.def.value + h->root.u.def.section->output_offset + h->root.u.def.section->output_section->vma + ent->addend); + loc = (htab->reliplt->contents + + (htab->reliplt->reloc_count++ + * sizeof (Elf64_External_Rela))); } else { + rela.r_offset = (htab->plt->output_section->vma + + htab->plt->output_offset + + ent->plt.offset); rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); rela.r_addend = ent->addend; + loc = (htab->relplt->contents + + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) + / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); } - - if (!htab->elf.dynamic_sections_created) - loc = (htab->reliplt->contents - + (ent->plt.offset - / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); - else - loc = (htab->relplt->contents - + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) - / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); } |