return new_name;
}
+/* This a copy of lto_section defined in GCC (lto-streamer.h). */
+
+struct lto_section
+{
+ int16_t major_version;
+ int16_t minor_version;
+ unsigned char slim_object;
+
+ /* Flags is a private field that is not defined publicly. */
+ uint16_t flags;
+};
+
/* Make a BFD section from an ELF section. We store a pointer to the
BFD section in the bfd_section field of the header. */
if ((hdr->sh_flags & SHF_EXCLUDE) != 0)
flags |= SEC_EXCLUDE;
+ switch (elf_elfheader (abfd)->e_ident[EI_OSABI])
+ {
+ /* FIXME: We should not recognize SHF_GNU_MBIND for ELFOSABI_NONE,
+ but binutils as of 2019-07-23 did not set the EI_OSABI header
+ byte. */
+ case ELFOSABI_NONE:
+ case ELFOSABI_GNU:
+ case ELFOSABI_FREEBSD:
+ if ((hdr->sh_flags & SHF_GNU_MBIND) != 0)
+ elf_tdata (abfd)->has_gnu_osabi |= elf_gnu_osabi_mbind;
+ break;
+ }
+
if ((flags & SEC_ALLOC) == 0)
{
/* The debugging sections appear to be recognized only by name,
newsect->flags |= SEC_ELF_RENAME;
}
+ /* GCC uses .gnu.lto_.lto.<some_hash> as a LTO bytecode information
+ section. */
+ const char *lto_section_name = ".gnu.lto_.lto.";
+ if (strncmp (name, lto_section_name, strlen (lto_section_name)) == 0)
+ {
+ struct lto_section lsection;
+ if (bfd_get_section_contents (abfd, newsect, &lsection, 0,
+ sizeof (struct lto_section)))
+ abfd->lto_slim_object = lsection.slim_object;
+ }
+
return TRUE;
}
bed = get_elf_backend_data (abfd);
- if ((abfd->flags & D_PAGED) != 0)
- {
- /* Add a PT_GNU_MBIND segment for each mbind section. */
- unsigned int page_align_power = bfd_log2 (bed->commonpagesize);
- for (s = abfd->sections; s != NULL; s = s->next)
- if (elf_section_flags (s) & SHF_GNU_MBIND)
- {
- if (elf_section_data (s)->this_hdr.sh_info
- > PT_GNU_MBIND_NUM)
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB: GNU_MBIN section `%pA' has invalid sh_info field: %d"),
- abfd, s, elf_section_data (s)->this_hdr.sh_info);
- continue;
- }
- /* Align mbind section to page size. */
- if (s->alignment_power < page_align_power)
- s->alignment_power = page_align_power;
- segs ++;
- }
- }
-
- /* Let the backend count up any program headers it might need. */
- if (bed->elf_backend_additional_program_headers)
+ if ((abfd->flags & D_PAGED) != 0
+ && (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0)
+ {
+ /* Add a PT_GNU_MBIND segment for each mbind section. */
+ unsigned int page_align_power = bfd_log2 (bed->commonpagesize);
+ for (s = abfd->sections; s != NULL; s = s->next)
+ if (elf_section_flags (s) & SHF_GNU_MBIND)
+ {
+ if (elf_section_data (s)->this_hdr.sh_info > PT_GNU_MBIND_NUM)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: GNU_MBIND section `%pA' has invalid "
+ "sh_info field: %d"),
+ abfd, s, elf_section_data (s)->this_hdr.sh_info);
+ continue;
+ }
+ /* Align mbind section to page size. */
+ if (s->alignment_power < page_align_power)
+ s->alignment_power = page_align_power;
+ segs ++;
+ }
+ }
+
+ /* Let the backend count up any program headers it might need. */
+ if (bed->elf_backend_additional_program_headers)
{
int a;
pm = &m->next;
}
- if (first_mbind && (abfd->flags & D_PAGED) != 0)
+ if (first_mbind
+ && (abfd->flags & D_PAGED) != 0
+ && (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0)
for (s = first_mbind; s != NULL; s = s->next)
if ((elf_section_flags (s) & SHF_GNU_MBIND) != 0
- && (elf_section_data (s)->this_hdr.sh_info
- <= PT_GNU_MBIND_NUM))
+ && elf_section_data (s)->this_hdr.sh_info <= PT_GNU_MBIND_NUM)
{
/* Mandated PF_R. */
unsigned long p_flags = PF_R;
return TRUE;
}
+/* Determine if a bfd is a debuginfo file. Unfortunately there
+ is no defined method for detecting such files, so we have to
+ use heuristics instead. */
+
+bfd_boolean
+is_debuginfo_file (bfd *abfd)
+{
+ if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ return FALSE;
+
+ Elf_Internal_Shdr **start_headers = elf_elfsections (abfd);
+ Elf_Internal_Shdr **end_headers = start_headers + elf_numsections (abfd);
+ Elf_Internal_Shdr **headerp;
+
+ for (headerp = start_headers; headerp < end_headers; headerp ++)
+ {
+ Elf_Internal_Shdr *header = * headerp;
+
+ /* Debuginfo files do not have any allocated SHT_PROGBITS sections.
+ The only allocated sections are SHT_NOBITS or SHT_NOTES. */
+ if ((header->sh_flags & SHF_ALLOC) == SHF_ALLOC
+ && header->sh_type != SHT_NOBITS
+ && header->sh_type != SHT_NOTE)
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
/* Assign file positions for the other sections. */
static bfd_boolean
BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos);
else if ((hdr->sh_flags & SHF_ALLOC) != 0)
{
- if (hdr->sh_size != 0)
+ if (hdr->sh_size != 0
+ /* PR 24717 - debuginfo files are known to be not strictly
+ compliant with the ELF standard. In particular they often
+ have .note.gnu.property sections that are outside of any
+ loadable segment. This is not a problem for such files,
+ so do not warn about them. */
+ && ! is_debuginfo_file (abfd))
_bfd_error_handler
/* xgettext:c-format */
(_("%pB: warning: allocated section `%s' not in segment"),
|| !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))))
return FALSE;
- if (bed->elf_backend_final_write_processing)
- (*bed->elf_backend_final_write_processing) (abfd, elf_linker (abfd));
+ if (!(*bed->elf_backend_final_write_processing) (abfd))
+ return FALSE;
if (!bed->s->write_shdrs_and_ehdr (abfd))
return FALSE;
& (SHF_MASKOS | SHF_MASKPROC));
/* Copy sh_info from input for mbind section. */
- if (elf_section_flags (isec) & SHF_GNU_MBIND)
+ if ((elf_tdata (ibfd)->has_gnu_osabi & elf_gnu_osabi_mbind) != 0
+ && elf_section_flags (isec) & SHF_GNU_MBIND)
elf_section_data (osec)->this_hdr.sh_info
= elf_section_data (isec)->this_hdr.sh_info;
if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
filename_ptr, functionname_ptr,
line_ptr, discriminator_ptr,
- dwarf_debug_sections, 0,
+ dwarf_debug_sections,
&elf_tdata (abfd)->dwarf2_find_line_info)
|| _bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset,
filename_ptr, functionname_ptr,
{
return _bfd_dwarf2_find_nearest_line (abfd, symbols, symbol, NULL, 0,
filename_ptr, NULL, line_ptr, NULL,
- dwarf_debug_sections, 0,
+ dwarf_debug_sections,
&elf_tdata (abfd)->dwarf2_find_line_info);
}
"LARGE_COMMON", 0, SEC_IS_COMMON);
void
-_bfd_elf_post_process_headers (bfd * abfd,
- struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
+_bfd_elf_post_process_headers (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
- Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
+}
- i_ehdrp = elf_elfheader (abfd);
+bfd_boolean
+_bfd_elf_final_write_processing (bfd *abfd)
+{
+ Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
- i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
+ i_ehdrp = elf_elfheader (abfd);
- /* To make things simpler for the loader on Linux systems we set the
- osabi field to ELFOSABI_GNU if the binary contains symbols of
- the STT_GNU_IFUNC type or STB_GNU_UNIQUE binding. */
- if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE
- && elf_tdata (abfd)->has_gnu_symbols)
- i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU;
+ if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE)
+ i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
+
+ /* Set the osabi field to ELFOSABI_GNU if the binary contains
+ SHF_GNU_MBIND sections or symbols of STT_GNU_IFUNC type or
+ STB_GNU_UNIQUE binding. */
+ if (elf_tdata (abfd)->has_gnu_osabi != 0)
+ {
+ if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE)
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU;
+ else if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU
+ && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_FREEBSD)
+ {
+ if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind)
+ _bfd_error_handler (_("GNU_MBIND section is unsupported"));
+ if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_ifunc)
+ _bfd_error_handler (_("symbol type STT_GNU_IFUNC is unsupported"));
+ if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_unique)
+ _bfd_error_handler (_("symbol binding STB_GNU_UNIQUE is unsupported"));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ }
+ return TRUE;
}
projects / external / binutils.git / blobdiff