diff options
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 5 | ||||
| -rw-r--r-- | bfd/elf-bfd.h | 3 | ||||
| -rw-r--r-- | bfd/elf-eh-frame.c | 57 |
3 files changed, 47 insertions, 18 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 623eefa..634591d 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,10 @@ 2004-10-10 Alan Modra <amodra@bigpond.net.au> + * elf-bfd.h (struct eh_frame_hdr_info): Add offsets_adjusted. + * elf-eh-frame.c (_bfd_elf_write_section_eh_frame): Adjust + offsets stored in struct eh_cie_fde entries before doing other + work. + * elf-bfd.h (struct eh_cie_fde): Add cie_inf, remove sec. (struct eh_frame_hdr_info): Add last_cie_inf, remove last_cie_offset. * elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Delete code diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index f9b1b4a..f452d3b 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -328,6 +328,7 @@ struct eh_frame_hdr_info We build it if we successfully read all .eh_frame input sections and recognize them. */ bfd_boolean table; + bfd_boolean offsets_adjusted; }; /* ELF linker hash table. */ @@ -1259,7 +1260,7 @@ struct elf_obj_tdata unsigned int cverrefs; /* Segment flags for the PT_GNU_STACK segment. */ - unsigned int stack_flags; + unsigned int stack_flags; /* Should the PT_GNU_RELRO segment be emitted? */ bfd_boolean relro; diff --git a/bfd/elf-eh-frame.c b/bfd/elf-eh-frame.c index 9bc5ea4..6302cf0 100644 --- a/bfd/elf-eh-frame.c +++ b/bfd/elf-eh-frame.c @@ -234,7 +234,7 @@ _bfd_elf_discard_section_eh_frame && bfd_is_abs_section (sec->output_section))) { /* At least one of the sections is being discarded from the - link, so we should just ignore them. */ + link, so we should just ignore them. */ return FALSE; } @@ -284,14 +284,14 @@ _bfd_elf_discard_section_eh_frame #define SKIP_RELOCS(buf) \ while (cookie->rel < cookie->relend \ - && (cookie->rel->r_offset \ + && (cookie->rel->r_offset \ < (bfd_size_type) ((buf) - ehbuf))) \ cookie->rel++ #define GET_RELOC(buf) \ ((cookie->rel < cookie->relend \ && (cookie->rel->r_offset \ - == (bfd_size_type) ((buf) - ehbuf))) \ + == (bfd_size_type) ((buf) - ehbuf))) \ ? cookie->rel : NULL) for (;;) @@ -511,7 +511,7 @@ _bfd_elf_discard_section_eh_frame /* For shared libraries, try to get rid of as many RELATIVE relocs as possible. */ - if (info->shared + if (info->shared && (get_elf_backend_data (abfd) ->elf_backend_can_make_relative_eh_frame (abfd, info, sec)) @@ -798,6 +798,39 @@ _bfd_elf_write_section_eh_frame (bfd *abfd, sec_info = elf_section_data (sec)->sec_info; htab = elf_hash_table (info); hdr_info = &htab->eh_info; + + /* First convert all offsets to output section offsets, so that a + CIE offset is valid if the CIE is used by a FDE from some other + section. This can happen when duplicate CIEs are deleted in + _bfd_elf_discard_section_eh_frame. We do all sections here because + this function might not be called on sections in the same order as + _bfd_elf_discard_section_eh_frame. */ + if (!hdr_info->offsets_adjusted) + { + bfd *ibfd; + asection *eh; + struct eh_frame_sec_info *eh_inf; + + for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) + { + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || (ibfd->flags & DYNAMIC) != 0) + continue; + + eh = bfd_get_section_by_name (ibfd, ".eh_frame"); + if (eh == NULL || eh->sec_info_type != ELF_INFO_TYPE_EH_FRAME) + continue; + + eh_inf = elf_section_data (eh)->sec_info; + for (ent = eh_inf->entry; ent < eh_inf->entry + eh_inf->count; ++ent) + { + ent->offset += eh->output_offset; + ent->new_offset += eh->output_offset; + } + } + hdr_info->offsets_adjusted = TRUE; + } + if (hdr_info->table && hdr_info->array == NULL) hdr_info->array = bfd_malloc (hdr_info->fde_count * sizeof(*hdr_info->array)); @@ -810,16 +843,6 @@ _bfd_elf_write_section_eh_frame (bfd *abfd, if (ent->removed) continue; - /* First convert all offsets to output section offsets, so that a - CIE offset is valid if the CIE is used by a FDE from some other - section. This can happen when duplicate CIEs are deleted in - _bfd_elf_discard_section_eh_frame. - FIXME: This assumes that _bfd_elf_discard_section_eh_frame is - called on sections in the same order as this function, which - isn't necessarily so. */ - ent->offset += sec->output_offset; - ent->new_offset += sec->output_offset; - if (ent->cie) { /* CIE */ @@ -864,7 +887,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd, break; case 'P': per_encoding = *buf++; - per_width = get_DW_EH_PE_width (per_encoding, ptr_size); + per_width = get_DW_EH_PE_width (per_encoding, ptr_size); BFD_ASSERT (per_width != 0); BFD_ASSERT (((per_encoding & 0x70) == DW_EH_PE_pcrel) == ent->per_encoding_relative); @@ -1013,8 +1036,8 @@ _bfd_elf_write_section_eh_frame (bfd *abfd, BFD_ASSERT ((bfd_size_type) (p - contents) == sec->size); return bfd_set_section_contents (abfd, sec->output_section, - contents, (file_ptr) sec->output_offset, - sec->size); + contents, (file_ptr) sec->output_offset, + sec->size); } /* Helper function used to sort .eh_frame_hdr search table by increasing |