diff options
Diffstat (limited to 'bfd/elf.c')
| -rw-r--r-- | bfd/elf.c | 71 |
1 files changed, 70 insertions, 1 deletions
diff --git a/bfd/elf.c b/bfd/elf.c index c3339f93b7a..30814ae1cc4 100644 --- a/bfd/elf.c +++ b/bfd/elf.c @@ -591,6 +591,8 @@ _bfd_elf_make_section_from_shdr (abfd, hdr, name) if (hdr->sh_flags & SHF_GROUP) if (!setup_group (abfd, hdr, newsect)) return false; + if ((hdr->sh_flags & SHF_TLS) != 0) + flags |= SEC_THREAD_LOCAL; /* The debugging sections appear to be recognized only by name, not any sort of flag. */ @@ -883,6 +885,7 @@ _bfd_elf_print_private_bfd_data (abfd, farg) case PT_NOTE: pt = "NOTE"; break; case PT_SHLIB: pt = "SHLIB"; break; case PT_PHDR: pt = "PHDR"; break; + case PT_TLS: pt = "TLS"; break; case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break; } @@ -2274,6 +2277,8 @@ elf_fake_sections (abfd, asect, failedptrarg) } if (elf_group_name (asect) != NULL) this_hdr->sh_flags |= SHF_GROUP; + if ((asect->flags & SEC_THREAD_LOCAL) != 0) + this_hdr->sh_flags |= SHF_TLS; /* Check for processor-specific section types. */ if (bed->elf_backend_fake_sections @@ -2956,6 +2961,8 @@ map_sections_to_segments (abfd) asection **hdrpp; boolean phdr_in_segment = true; boolean writable; + int tls_count = 0; + asection *first_tls = NULL; asection *dynsec, *eh_frame_hdr; bfd_size_type amt; @@ -3194,6 +3201,39 @@ map_sections_to_segments (abfd) *pm = m; pm = &m->next; } + if (s->flags & SEC_THREAD_LOCAL) + { + if (! tls_count) + first_tls = s; + tls_count++; + } + } + + /* If there are any SHF_TLS output sections, add PT_TLS segment. */ + if (tls_count > 0) + { + int i; + + amt = sizeof (struct elf_segment_map); + amt += (tls_count - 1) * sizeof (asection *); + m = (struct elf_segment_map *) bfd_zalloc (abfd, amt); + if (m == NULL) + goto error_return; + m->next = NULL; + m->p_type = PT_TLS; + m->count = tls_count; + /* Mandated PF_R. */ + m->p_flags = PF_R; + m->p_flags_valid = 1; + for (i = 0; i < tls_count; ++i) + { + BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL); + m->sections[i] = first_tls; + first_tls = first_tls->next; + } + + *pm = m; + pm = &m->next; } /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME @@ -3618,6 +3658,20 @@ Error: First section in segment (%s) starts at 0x%x whereas the segment starts a if ((flags & SEC_LOAD) != 0) p->p_filesz += sec->_raw_size; + if (p->p_type == PT_TLS + && sec->_raw_size == 0 + && (sec->flags & SEC_HAS_CONTENTS) == 0) + { + struct bfd_link_order *o; + bfd_vma tbss_size = 0; + + for (o = sec->link_order_head; o != NULL; o = o->next) + if (tbss_size < o->offset + o->size) + tbss_size = o->offset + o->size; + + p->p_memsz += tbss_size; + } + if (align > p->p_align && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0)) p->p_align = align; @@ -3752,6 +3806,16 @@ get_program_header_size (abfd) } } + for (s = abfd->sections; s != NULL; s = s->next) + { + if (s->flags & SEC_THREAD_LOCAL) + { + /* We need a PT_TLS segment. */ + ++segs; + break; + } + } + /* Let the backend count up any program headers it might need. */ if (bed->elf_backend_additional_program_headers) { @@ -5045,13 +5109,18 @@ swap_out_syms (abfd, sttp, relocatable_p) sym.st_shndx = shndx; } - if ((flags & BSF_FUNCTION) != 0) + if ((flags & BSF_THREAD_LOCAL) != 0) + type = STT_TLS; + else if ((flags & BSF_FUNCTION) != 0) type = STT_FUNC; else if ((flags & BSF_OBJECT) != 0) type = STT_OBJECT; else type = STT_NOTYPE; + if (syms[idx]->section->flags & SEC_THREAD_LOCAL) + type = STT_TLS; + /* Processor-specific types */ if (type_ptr != NULL && bed->elf_backend_get_symbol_type) |