static int elf_sort_sections (const void *, const void *);
static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *);
static bfd_boolean prep_headers (bfd *);
-static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ;
+static bfd_boolean swap_out_syms (bfd *, struct elf_strtab_hash **, int) ;
static bfd_boolean elf_read_notes (bfd *, file_ptr, bfd_size_type) ;
static bfd_boolean elf_parse_notes (bfd *abfd, char *buf, size_t size,
file_ptr offset);
abfd, shindex);
return NULL;
}
-
+
if (bfd_elf_get_str_section (abfd, shindex) == NULL)
return NULL;
}
for (i = 0; i < num_group; i++)
{
Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
- Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
- unsigned int n_elt = shdr->sh_size / 4;
+ Elf_Internal_Group *idx;
+ unsigned int n_elt;
+
+ /* PR binutils/18758: Beware of corrupt binaries with invalid group data. */
+ if (shdr == NULL || shdr->bfd_section == NULL || shdr->contents == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%B: section group entry number %u is corrupt"),
+ abfd, i);
+ result = FALSE;
+ continue;
+ }
+
+ idx = (Elf_Internal_Group *) shdr->contents;
+ n_elt = shdr->sh_size / 4;
while (--n_elt != 0)
if ((++idx)->shdr->bfd_section)
return elf_next_in_group (sec) != NULL;
}
+static char *
+convert_debug_to_zdebug (bfd *abfd, const char *name)
+{
+ unsigned int len = strlen (name);
+ char *new_name = bfd_alloc (abfd, len + 2);
+ if (new_name == NULL)
+ return NULL;
+ new_name[0] = '.';
+ new_name[1] = 'z';
+ memcpy (new_name + 2, name + 1, len);
+ return new_name;
+}
+
+static char *
+convert_zdebug_to_debug (bfd *abfd, const char *name)
+{
+ unsigned int len = strlen (name);
+ char *new_name = bfd_alloc (abfd, len);
+ if (new_name == NULL)
+ return NULL;
+ new_name[0] = '.';
+ memcpy (new_name + 1, name + 2, len - 1);
+ return new_name;
+}
+
/* Make a BFD section from an ELF section. We store a pointer to the
BFD section in the bfd_section field of the header. */
|| (name[1] == 'z' && name[7] == '_')))
{
enum { nothing, compress, decompress } action = nothing;
- char *new_name;
+ int compression_header_size;
+ bfd_size_type uncompressed_size;
+ bfd_boolean compressed
+ = bfd_is_section_compressed_with_header (abfd, newsect,
+ &compression_header_size,
+ &uncompressed_size);
- if (bfd_is_section_compressed (abfd, newsect))
+ if (compressed)
{
/* Compressed section. Check if we should decompress. */
if ((abfd->flags & BFD_DECOMPRESS))
action = decompress;
}
- else
+
+ /* Compress the uncompressed section or convert from/to .zdebug*
+ section. Check if we should compress. */
+ if (action == nothing)
{
- /* Normal section. Check if we should compress. */
- if ((abfd->flags & BFD_COMPRESS) && newsect->size != 0)
+ if (newsect->size != 0
+ && (abfd->flags & BFD_COMPRESS)
+ && compression_header_size >= 0
+ && uncompressed_size > 0
+ && (!compressed
+ || ((compression_header_size > 0)
+ != ((abfd->flags & BFD_COMPRESS_GABI) != 0))))
action = compress;
+ else
+ return TRUE;
}
- new_name = NULL;
- switch (action)
+ if (action == compress)
{
- case nothing:
- break;
- case compress:
if (!bfd_init_section_compress_status (abfd, newsect))
{
(*_bfd_error_handler)
abfd, name);
return FALSE;
}
- if (name[1] != 'z')
- {
- unsigned int len = strlen (name);
-
- new_name = bfd_alloc (abfd, len + 2);
- if (new_name == NULL)
- return FALSE;
- new_name[0] = '.';
- new_name[1] = 'z';
- memcpy (new_name + 2, name + 1, len);
- }
- break;
- case decompress:
+ }
+ else
+ {
if (!bfd_init_section_decompress_status (abfd, newsect))
{
(*_bfd_error_handler)
abfd, name);
return FALSE;
}
- if (name[1] == 'z')
- {
- unsigned int len = strlen (name);
+ }
- new_name = bfd_alloc (abfd, len);
+ if (abfd->is_linker_input)
+ {
+ if (name[1] == 'z'
+ && (action == decompress
+ || (action == compress
+ && (abfd->flags & BFD_COMPRESS_GABI) != 0)))
+ {
+ /* Convert section name from .zdebug_* to .debug_* so
+ that linker will consider this section as a debug
+ section. */
+ char *new_name = convert_zdebug_to_debug (abfd, name);
if (new_name == NULL)
return FALSE;
- new_name[0] = '.';
- memcpy (new_name + 1, name + 2, len - 1);
+ bfd_rename_section (abfd, newsect, new_name);
}
- break;
}
- if (new_name != NULL)
- bfd_rename_section (abfd, newsect, new_name);
+ else
+ /* For objdump, don't rename the section. For objcopy, delay
+ section rename to elf_fake_sections. */
+ newsect->flags |= SEC_ELF_RENAME;
}
return TRUE;
/* Copy object attributes. */
_bfd_elf_copy_obj_attributes (ibfd, obfd);
+
+ /* This is an feature for objcopy --only-keep-debug: When a section's type
+ is changed to NOBITS, we preserve the sh_link and sh_info fields so that
+ they can be matched up with the original. */
+ Elf_Internal_Shdr ** iheaders = elf_elfsections (ibfd);
+ Elf_Internal_Shdr ** oheaders = elf_elfsections (obfd);
+
+ if (iheaders != NULL && oheaders != NULL)
+ {
+ unsigned int i;
+
+ for (i = 0; i < elf_numsections (obfd); i++)
+ {
+ unsigned int j;
+ Elf_Internal_Shdr * oheader = oheaders[i];
+
+ if (oheader == NULL
+ || oheader->sh_type != SHT_NOBITS
+ || oheader->sh_size == 0
+ || (oheader->sh_info != 0 && oheader->sh_link != 0))
+ continue;
+
+ /* Scan for the matching section in the input bfd.
+ FIXME: We could use something better than a linear scan here.
+ Unfortunately we cannot compare names as the output string table
+ is empty, so instead we check size, address and type. */
+ for (j = 0; j < elf_numsections (ibfd); j++)
+ {
+ Elf_Internal_Shdr * iheader = iheaders[j];
+
+ /* Since --only-keep-debug turns all non-debug sections
+ into SHT_NOBITS sections, the output SHT_NOBITS type
+ matches any input type. */
+ if ((oheader->sh_type == SHT_NOBITS
+ || iheader->sh_type == oheader->sh_type)
+ && iheader->sh_flags == oheader->sh_flags
+ && iheader->sh_addralign == oheader->sh_addralign
+ && iheader->sh_entsize == oheader->sh_entsize
+ && iheader->sh_size == oheader->sh_size
+ && iheader->sh_addr == oheader->sh_addr
+ && (iheader->sh_info != oheader->sh_info
+ || iheader->sh_link != oheader->sh_link))
+ {
+ /* Note: Strictly speaking these assignments are wrong.
+ The sh_link and sh_info fields should point to the
+ relevent sections in the output BFD, which may not be in
+ the same location as they were in the input BFD. But the
+ whole point of this action is to preserve the original
+ values of the sh_link and sh_info fields, so that they
+ can be matched up with the section headers in the
+ original file. So strictly speaking we may be creating
+ an invalid ELF file, but it is only for a file that just
+ contains debug info and only for sections without any
+ contents. */
+ if (oheader->sh_link == 0)
+ oheader->sh_link = iheader->sh_link;
+ if (oheader->sh_info == 0)
+ oheader->sh_info = iheader->sh_info;
+ break;
+ }
+ }
+ }
+ }
+
return TRUE;
}
break;
}
}
-
-/* Allocate an ELF string table--force the first byte to be zero. */
-
-struct bfd_strtab_hash *
-_bfd_elf_stringtab_init (void)
-{
- struct bfd_strtab_hash *ret;
-
- ret = _bfd_stringtab_init ();
- if (ret != NULL)
- {
- bfd_size_type loc;
-
- loc = _bfd_stringtab_add (ret, "", TRUE, FALSE);
- BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
- if (loc == (bfd_size_type) -1)
- {
- _bfd_stringtab_free (ret);
- ret = NULL;
- }
- }
- return ret;
-}
\f
/* ELF .o/exec file reading */
return elf_section_data (sec)->rela.hdr;
}
+static bfd_boolean
+_bfd_elf_set_reloc_sh_name (bfd *abfd,
+ Elf_Internal_Shdr *rel_hdr,
+ const char *sec_name,
+ bfd_boolean use_rela_p)
+{
+ char *name = (char *) bfd_alloc (abfd,
+ sizeof ".rela" + strlen (sec_name));
+ if (name == NULL)
+ return FALSE;
+
+ sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", sec_name);
+ rel_hdr->sh_name =
+ (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
+ FALSE);
+ if (rel_hdr->sh_name == (unsigned int) -1)
+ return FALSE;
+
+ return TRUE;
+}
+
/* Allocate and initialize a section-header for a new reloc section,
containing relocations against ASECT. It is stored in RELDATA. If
USE_RELA_P is TRUE, we use RELA relocations; otherwise, we use REL
static bfd_boolean
_bfd_elf_init_reloc_shdr (bfd *abfd,
struct bfd_elf_section_reloc_data *reldata,
- asection *asect,
- bfd_boolean use_rela_p)
+ const char *sec_name,
+ bfd_boolean use_rela_p,
+ bfd_boolean delay_st_name_p)
{
Elf_Internal_Shdr *rel_hdr;
- char *name;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
bfd_size_type amt;
rel_hdr = bfd_zalloc (abfd, amt);
reldata->hdr = rel_hdr;
- amt = sizeof ".rela" + strlen (asect->name);
- name = (char *) bfd_alloc (abfd, amt);
- if (name == NULL)
- return FALSE;
- sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
- rel_hdr->sh_name =
- (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
- FALSE);
- if (rel_hdr->sh_name == (unsigned int) -1)
+ if (delay_st_name_p)
+ rel_hdr->sh_name = (unsigned int) -1;
+ else if (!_bfd_elf_set_reloc_sh_name (abfd, rel_hdr, sec_name,
+ use_rela_p))
return FALSE;
rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
rel_hdr->sh_entsize = (use_rela_p
struct bfd_elf_section_data *esd = elf_section_data (asect);
Elf_Internal_Shdr *this_hdr;
unsigned int sh_type;
+ const char *name = asect->name;
+ bfd_boolean delay_st_name_p = FALSE;
if (arg->failed)
{
this_hdr = &esd->this_hdr;
- this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
- asect->name, FALSE);
- if (this_hdr->sh_name == (unsigned int) -1)
+ if (arg->link_info)
{
- arg->failed = TRUE;
- return;
+ /* ld: compress DWARF debug sections with names: .debug_*. */
+ if ((arg->link_info->compress_debug & COMPRESS_DEBUG)
+ && (asect->flags & SEC_DEBUGGING)
+ && name[1] == 'd'
+ && name[6] == '_')
+ {
+ /* Set SEC_ELF_COMPRESS to indicate this section should be
+ compressed. */
+ asect->flags |= SEC_ELF_COMPRESS;
+
+ /* If this section will be compressed, delay adding setion
+ name to section name section after it is compressed in
+ _bfd_elf_assign_file_positions_for_non_load. */
+ delay_st_name_p = TRUE;
+ }
+ }
+ else if ((asect->flags & SEC_ELF_RENAME))
+ {
+ /* objcopy: rename output DWARF debug section. */
+ if ((abfd->flags & (BFD_DECOMPRESS | BFD_COMPRESS_GABI)))
+ {
+ /* When we decompress or compress with SHF_COMPRESSED,
+ convert section name from .zdebug_* to .debug_* if
+ needed. */
+ if (name[1] == 'z')
+ {
+ char *new_name = convert_zdebug_to_debug (abfd, name);
+ if (new_name == NULL)
+ {
+ arg->failed = TRUE;
+ return;
+ }
+ name = new_name;
+ }
+ }
+ else if (asect->compress_status == COMPRESS_SECTION_DONE)
+ {
+ /* PR binutils/18087: Compression does not always make a
+ section smaller. So only rename the section when
+ compression has actually taken place. If input section
+ name is .zdebug_*, we should never compress it again. */
+ char *new_name = convert_debug_to_zdebug (abfd, name);
+ if (new_name == NULL)
+ {
+ arg->failed = TRUE;
+ return;
+ }
+ BFD_ASSERT (name[1] != 'z');
+ name = new_name;
+ }
+ }
+
+ if (delay_st_name_p)
+ this_hdr->sh_name = (unsigned int) -1;
+ else
+ {
+ this_hdr->sh_name
+ = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
+ name, FALSE);
+ if (this_hdr->sh_name == (unsigned int) -1)
+ {
+ arg->failed = TRUE;
+ return;
+ }
}
/* Don't clear sh_flags. Assembler may set additional bits. */
if (arg->link_info
/* Do the normal setup if we wouldn't create any sections here. */
&& esd->rel.count + esd->rela.count > 0
- && (arg->link_info->relocatable || arg->link_info->emitrelocations))
+ && (bfd_link_relocatable (arg->link_info)
+ || arg->link_info->emitrelocations))
{
if (esd->rel.count && esd->rel.hdr == NULL
- && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, asect, FALSE))
+ && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, name, FALSE,
+ delay_st_name_p))
{
arg->failed = TRUE;
return;
}
if (esd->rela.count && esd->rela.hdr == NULL
- && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, asect, TRUE))
+ && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, name, TRUE,
+ delay_st_name_p))
{
arg->failed = TRUE;
return;
else if (!_bfd_elf_init_reloc_shdr (abfd,
(asect->use_rela_p
? &esd->rela : &esd->rel),
- asect,
- asect->use_rela_p))
+ name,
+ asect->use_rela_p,
+ delay_st_name_p))
arg->failed = TRUE;
}
H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
}
+/* Return the section which RELOC_SEC applies to. */
+
+asection *
+_bfd_elf_get_reloc_section (asection *reloc_sec)
+{
+ const char *name;
+ unsigned int type;
+ bfd *abfd;
+
+ if (reloc_sec == NULL)
+ return NULL;
+
+ type = elf_section_data (reloc_sec)->this_hdr.sh_type;
+ if (type != SHT_REL && type != SHT_RELA)
+ return NULL;
+
+ /* We look up the section the relocs apply to by name. */
+ name = reloc_sec->name;
+ if (type == SHT_REL)
+ name += 4;
+ else
+ name += 5;
+
+ /* If a target needs .got.plt section, relocations in rela.plt/rel.plt
+ section apply to .got.plt section. */
+ abfd = reloc_sec->owner;
+ if (get_elf_backend_data (abfd)->want_got_plt
+ && strcmp (name, ".plt") == 0)
+ {
+ /* .got.plt is a linker created input section. It may be mapped
+ to some other output section. Try two likely sections. */
+ name = ".got.plt";
+ reloc_sec = bfd_get_section_by_name (abfd, name);
+ if (reloc_sec != NULL)
+ return reloc_sec;
+ name = ".got";
+ }
+
+ reloc_sec = bfd_get_section_by_name (abfd, name);
+ return reloc_sec;
+}
+
/* Assign all ELF section numbers. The dummy first section is handled here
too. The link/info pointers for the standard section types are filled
in here too, while we're at it. */
{
struct elf_obj_tdata *t = elf_tdata (abfd);
asection *sec;
- unsigned int section_number, secn;
+ unsigned int section_number;
Elf_Internal_Shdr **i_shdrp;
struct bfd_elf_section_data *d;
bfd_boolean need_symtab;
_bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
/* SHT_GROUP sections are in relocatable files only. */
- if (link_info == NULL || link_info->relocatable)
+ if (link_info == NULL || bfd_link_relocatable (link_info))
{
/* Put SHT_GROUP sections first. */
for (sec = abfd->sections; sec != NULL; sec = sec->next)
if (d->this_hdr.sh_type != SHT_GROUP)
d->this_idx = section_number++;
- _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
+ if (d->this_hdr.sh_name != (unsigned int) -1)
+ _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
if (d->rel.hdr)
{
d->rel.idx = section_number++;
- _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name);
+ if (d->rel.hdr->sh_name != (unsigned int) -1)
+ _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name);
}
else
d->rel.idx = 0;
if (d->rela.hdr)
{
d->rela.idx = section_number++;
- _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name);
+ if (d->rela.hdr->sh_name != (unsigned int) -1)
+ _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name);
}
else
d->rela.idx = 0;
return FALSE;
}
- _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
- t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
-
elf_numsections (abfd) = section_number;
elf_elfheader (abfd)->e_shnum = section_number;
for (sec = abfd->sections; sec; sec = sec->next)
{
asection *s;
- const char *name;
d = elf_section_data (sec);
if (s != NULL)
d->this_hdr.sh_link = elf_section_data (s)->this_idx;
- /* We look up the section the relocs apply to by name. */
- name = sec->name;
- if (d->this_hdr.sh_type == SHT_REL)
- name += 4;
- else
- name += 5;
- s = bfd_get_section_by_name (abfd, name);
+ s = get_elf_backend_data (abfd)->get_reloc_section (sec);
if (s != NULL)
{
d->this_hdr.sh_info = elf_section_data (s)->this_idx;
}
}
- for (secn = 1; secn < section_number; ++secn)
- if (i_shdrp[secn] == NULL)
- i_shdrp[secn] = i_shdrp[0];
- else
- i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
- i_shdrp[secn]->sh_name);
+ /* Delay setting sh_name to _bfd_elf_write_object_contents so that
+ _bfd_elf_assign_file_positions_for_non_load can convert DWARF
+ debug section name from .debug_* to .zdebug_* if needed. */
+
return TRUE;
}
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
struct fake_section_arg fsargs;
bfd_boolean failed;
- struct bfd_strtab_hash *strtab = NULL;
+ struct elf_strtab_hash *strtab = NULL;
Elf_Internal_Shdr *shstrtab_hdr;
bfd_boolean need_symtab;
shstrtab_hdr->sh_type = SHT_STRTAB;
shstrtab_hdr->sh_flags = 0;
shstrtab_hdr->sh_addr = 0;
- shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
+ /* sh_size is set in _bfd_elf_assign_file_positions_for_non_load. */
shstrtab_hdr->sh_entsize = 0;
shstrtab_hdr->sh_link = 0;
shstrtab_hdr->sh_info = 0;
- /* sh_offset is set in assign_file_positions_except_relocs. */
+ /* sh_offset is set in _bfd_elf_assign_file_positions_for_non_load. */
shstrtab_hdr->sh_addralign = 1;
if (!assign_file_positions_except_relocs (abfd, link_info))
/* Now that we know where the .strtab section goes, write it
out. */
if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
- || ! _bfd_stringtab_emit (abfd, strtab))
+ || ! _bfd_elf_strtab_emit (abfd, strtab))
return FALSE;
- _bfd_stringtab_free (strtab);
+ _bfd_elf_strtab_free (strtab);
}
abfd->output_has_begun = TRUE;
new_segment = TRUE;
}
else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0
- && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0)
+ && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0
+ && ((abfd->flags & D_PAGED) == 0
+ || (((last_hdr->lma + last_size - 1) & -maxpagesize)
+ != (hdr->lma & -maxpagesize))))
{
- /* We don't want to put a loadable section after a
- nonloadable section in the same segment.
- Consider .tbss sections as loadable for this purpose. */
+ /* We don't want to put a loaded section after a
+ nonloaded (ie. bss style) section in the same segment
+ as that will force the non-loaded section to be loaded.
+ Consider .tbss sections as loaded for this purpose.
+ However, like the writable/non-writable case below,
+ if they are on the same page then they must be put
+ in the same segment. */
new_segment = TRUE;
}
else if ((abfd->flags & D_PAGED) == 0)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
Elf_Internal_Shdr **i_shdrpp;
- Elf_Internal_Shdr **hdrpp;
+ Elf_Internal_Shdr **hdrpp, **end_hdrpp;
Elf_Internal_Phdr *phdrs;
Elf_Internal_Phdr *p;
struct elf_segment_map *m;
bfd_vma filehdr_vaddr, filehdr_paddr;
bfd_vma phdrs_vaddr, phdrs_paddr;
file_ptr off;
- unsigned int num_sec;
- unsigned int i;
unsigned int count;
i_shdrpp = elf_elfsections (abfd);
- num_sec = elf_numsections (abfd);
+ end_hdrpp = i_shdrpp + elf_numsections (abfd);
off = elf_next_file_pos (abfd);
- for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
+ for (hdrpp = i_shdrpp + 1; hdrpp < end_hdrpp; hdrpp++)
{
Elf_Internal_Shdr *hdr;
}
else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
&& hdr->bfd_section == NULL)
+ || (hdr->bfd_section != NULL
+ && (hdr->bfd_section->flags & SEC_ELF_COMPRESS))
+ /* Compress DWARF debug sections. */
|| hdr == i_shdrpp[elf_onesymtab (abfd)]
|| hdr == i_shdrpp[elf_symtab_shndx (abfd)]
- || hdr == i_shdrpp[elf_strtab_sec (abfd)])
+ || hdr == i_shdrpp[elf_strtab_sec (abfd)]
+ || hdr == i_shdrpp[elf_shstrtab_sec (abfd)])
hdr->sh_offset = -1;
else
off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
}
else if (m->count != 0)
{
+ unsigned int i;
if (p->p_type != PT_LOAD
&& (p->p_type != PT_NOTE
|| bfd_get_format (abfd) != bfd_core))
{
if (m->includes_filehdr || m->includes_phdrs)
{
- /* PR 17512: file: 2195325e. */
+ /* PR 17512: file: 2195325e. */
(*_bfd_error_handler)
(_("%B: warning: non-load segment includes file header and/or program header"),
abfd);
hdr = *hdrpp;
if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
&& hdr->bfd_section == NULL)
+ || (hdr->bfd_section != NULL
+ && (hdr->bfd_section->flags & SEC_ELF_COMPRESS))
+ /* Compress DWARF debug sections. */
|| i == elf_onesymtab (abfd)
|| i == elf_symtab_shndx (abfd)
- || i == elf_strtab_sec (abfd))
+ || i == elf_strtab_sec (abfd)
+ || i == elf_shstrtab_sec (abfd))
{
hdr->sh_offset = -1;
}
}
/* Set e_type in ELF header to ET_EXEC for -pie -Ttext-segment=. */
- if (link_info != NULL
- && link_info->executable
- && link_info->shared)
+ if (link_info != NULL && bfd_link_pie (link_info))
{
unsigned int num_segments = elf_elfheader (abfd)->e_phnum;
Elf_Internal_Phdr *segment = elf_tdata (abfd)->phdr;
/* Assign file positions for all the reloc sections which are not part
of the loadable file image, and the file position of section headers. */
-static void
-_bfd_elf_assign_file_positions_for_relocs (bfd *abfd)
+static bfd_boolean
+_bfd_elf_assign_file_positions_for_non_load (bfd *abfd)
{
file_ptr off;
- unsigned int i, num_sec;
- Elf_Internal_Shdr **shdrpp;
+ Elf_Internal_Shdr **shdrpp, **end_shdrpp;
+ Elf_Internal_Shdr *shdrp;
Elf_Internal_Ehdr *i_ehdrp;
const struct elf_backend_data *bed;
off = elf_next_file_pos (abfd);
- num_sec = elf_numsections (abfd);
- for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
+ shdrpp = elf_elfsections (abfd);
+ end_shdrpp = shdrpp + elf_numsections (abfd);
+ for (shdrpp++; shdrpp < end_shdrpp; shdrpp++)
{
- Elf_Internal_Shdr *shdrp;
-
shdrp = *shdrpp;
- if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
- && shdrp->sh_offset == -1)
- off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE);
+ if (shdrp->sh_offset == -1)
+ {
+ asection *sec = shdrp->bfd_section;
+ bfd_boolean is_rel = (shdrp->sh_type == SHT_REL
+ || shdrp->sh_type == SHT_RELA);
+ if (is_rel
+ || (sec != NULL && (sec->flags & SEC_ELF_COMPRESS)))
+ {
+ if (!is_rel)
+ {
+ const char *name = sec->name;
+ struct bfd_elf_section_data *d;
+
+ /* Compress DWARF debug sections. */
+ if (!bfd_compress_section (abfd, sec,
+ shdrp->contents))
+ return FALSE;
+
+ if (sec->compress_status == COMPRESS_SECTION_DONE
+ && (abfd->flags & BFD_COMPRESS_GABI) == 0)
+ {
+ /* If section is compressed with zlib-gnu, convert
+ section name from .debug_* to .zdebug_*. */
+ char *new_name
+ = convert_debug_to_zdebug (abfd, name);
+ if (new_name == NULL)
+ return FALSE;
+ name = new_name;
+ }
+ /* Add setion name to section name section. */
+ if (shdrp->sh_name != (unsigned int) -1)
+ abort ();
+ shdrp->sh_name
+ = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
+ name, FALSE);
+ d = elf_section_data (sec);
+
+ /* Add reloc setion name to section name section. */
+ if (d->rel.hdr
+ && !_bfd_elf_set_reloc_sh_name (abfd,
+ d->rel.hdr,
+ name, FALSE))
+ return FALSE;
+ if (d->rela.hdr
+ && !_bfd_elf_set_reloc_sh_name (abfd,
+ d->rela.hdr,
+ name, TRUE))
+ return FALSE;
+
+ /* Update section size and contents. */
+ shdrp->sh_size = sec->size;
+ shdrp->contents = sec->contents;
+ shdrp->bfd_section->contents = NULL;
+ }
+ off = _bfd_elf_assign_file_position_for_section (shdrp,
+ off,
+ TRUE);
+ }
+ }
}
-/* Place the section headers. */
+ /* Place section name section after DWARF debug sections have been
+ compressed. */
+ _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
+ shdrp = &elf_tdata (abfd)->shstrtab_hdr;
+ shdrp->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
+ off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE);
+
+ /* Place the section headers. */
i_ehdrp = elf_elfheader (abfd);
bed = get_elf_backend_data (abfd);
off = align_file_position (off, 1 << bed->s->log_file_align);
i_ehdrp->e_shoff = off;
off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
elf_next_file_pos (abfd) = off;
+
+ return TRUE;
}
bfd_boolean
if (failed)
return FALSE;
- _bfd_elf_assign_file_positions_for_relocs (abfd);
+ if (!_bfd_elf_assign_file_positions_for_non_load (abfd))
+ return FALSE;
/* After writing the headers, we need to write the sections too... */
num_sec = elf_numsections (abfd);
for (count = 1; count < num_sec; count++)
{
+ i_shdrp[count]->sh_name
+ = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
+ i_shdrp[count]->sh_name);
if (bed->elf_backend_section_processing)
(*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
if (i_shdrp[count]->contents)
{
Elf_Internal_Shdr *ihdr, *ohdr;
- bfd_boolean final_link = link_info != NULL && !link_info->relocatable;
+ bfd_boolean final_link = (link_info != NULL
+ && !bfd_link_relocatable (link_info));
if (ibfd->xvec->flavour != bfd_target_elf_flavour
|| obfd->xvec->flavour != bfd_target_elf_flavour)
elf_next_in_group (osec) = elf_next_in_group (isec);
elf_section_data (osec)->group = elf_section_data (isec)->group;
}
+
+ /* If not decompress, preserve SHF_COMPRESSED. */
+ if ((ibfd->flags & BFD_DECOMPRESS) == 0)
+ elf_section_flags (osec) |= (elf_section_flags (isec)
+ & SHF_COMPRESSED);
}
ihdr = &elf_section_data (isec)->this_hdr;
static bfd_boolean
swap_out_syms (bfd *abfd,
- struct bfd_strtab_hash **sttp,
+ struct elf_strtab_hash **sttp,
int relocatable_p)
{
const struct elf_backend_data *bed;
int symcount;
asymbol **syms;
- struct bfd_strtab_hash *stt;
+ struct elf_strtab_hash *stt;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Shdr *symtab_shndx_hdr;
Elf_Internal_Shdr *symstrtab_hdr;
+ struct elf_sym_strtab *symstrtab;
bfd_byte *outbound_syms;
bfd_byte *outbound_shndx;
+ unsigned long outbound_syms_index;
+ unsigned long outbound_shndx_index;
int idx;
unsigned int num_locals;
bfd_size_type amt;
return FALSE;
/* Dump out the symtabs. */
- stt = _bfd_elf_stringtab_init ();
+ stt = _bfd_elf_strtab_init ();
if (stt == NULL)
return FALSE;
symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
symstrtab_hdr->sh_type = SHT_STRTAB;
+ /* Allocate buffer to swap out the .strtab section. */
+ symstrtab = (struct elf_sym_strtab *) bfd_malloc ((symcount + 1)
+ * sizeof (*symstrtab));
+ if (symstrtab == NULL)
+ {
+ _bfd_elf_strtab_free (stt);
+ return FALSE;
+ }
+
outbound_syms = (bfd_byte *) bfd_alloc2 (abfd, 1 + symcount,
bed->s->sizeof_sym);
if (outbound_syms == NULL)
{
- _bfd_stringtab_free (stt);
+error_return:
+ _bfd_elf_strtab_free (stt);
+ free (symstrtab);
return FALSE;
}
symtab_hdr->contents = outbound_syms;
+ outbound_syms_index = 0;
outbound_shndx = NULL;
+ outbound_shndx_index = 0;
symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
if (symtab_shndx_hdr->sh_name != 0)
{
outbound_shndx = (bfd_byte *)
bfd_zalloc2 (abfd, 1 + symcount, sizeof (Elf_External_Sym_Shndx));
if (outbound_shndx == NULL)
- {
- _bfd_stringtab_free (stt);
- return FALSE;
- }
+ goto error_return;
symtab_shndx_hdr->contents = outbound_shndx;
symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
sym.st_other = 0;
sym.st_shndx = SHN_UNDEF;
sym.st_target_internal = 0;
- bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
- outbound_syms += bed->s->sizeof_sym;
+ symstrtab[0].sym = sym;
+ symstrtab[0].dest_index = outbound_syms_index;
+ symstrtab[0].destshndx_index = outbound_shndx_index;
+ outbound_syms_index++;
if (outbound_shndx != NULL)
- outbound_shndx += sizeof (Elf_External_Sym_Shndx);
+ outbound_shndx_index++;
}
name_local_sections
&& bed->elf_backend_name_local_section_symbols (abfd));
syms = bfd_get_outsymbols (abfd);
- for (idx = 0; idx < symcount; idx++)
+ for (idx = 0; idx < symcount;)
{
Elf_Internal_Sym sym;
bfd_vma value = syms[idx]->value;
&& (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
{
/* Local section symbols have no name. */
- sym.st_name = 0;
+ sym.st_name = (unsigned long) -1;
}
else
{
- sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
- syms[idx]->name,
- TRUE, FALSE);
+ /* Call _bfd_elf_strtab_offset after _bfd_elf_strtab_finalize
+ to get the final offset for st_name. */
+ sym.st_name
+ = (unsigned long) _bfd_elf_strtab_add (stt, syms[idx]->name,
+ FALSE);
if (sym.st_name == (unsigned long) -1)
- {
- _bfd_stringtab_free (stt);
- return FALSE;
- }
+ goto error_return;
}
type_ptr = elf_symbol_from (abfd, syms[idx]);
syms[idx]->name ? syms[idx]->name : "<Local sym>",
sec->name);
bfd_set_error (bfd_error_invalid_operation);
- _bfd_stringtab_free (stt);
- return FALSE;
+ goto error_return;
}
shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
sym.st_target_internal = 0;
}
- bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
- outbound_syms += bed->s->sizeof_sym;
+ idx++;
+ symstrtab[idx].sym = sym;
+ symstrtab[idx].dest_index = outbound_syms_index;
+ symstrtab[idx].destshndx_index = outbound_shndx_index;
+
+ outbound_syms_index++;
if (outbound_shndx != NULL)
- outbound_shndx += sizeof (Elf_External_Sym_Shndx);
+ outbound_shndx_index++;
}
+ /* Finalize the .strtab section. */
+ _bfd_elf_strtab_finalize (stt);
+
+ /* Swap out the .strtab section. */
+ for (idx = 0; idx <= symcount; idx++)
+ {
+ struct elf_sym_strtab *elfsym = &symstrtab[idx];
+ if (elfsym->sym.st_name == (unsigned long) -1)
+ elfsym->sym.st_name = 0;
+ else
+ elfsym->sym.st_name = _bfd_elf_strtab_offset (stt,
+ elfsym->sym.st_name);
+ bed->s->swap_symbol_out (abfd, &elfsym->sym,
+ (outbound_syms
+ + (elfsym->dest_index
+ * bed->s->sizeof_sym)),
+ (outbound_shndx
+ + (elfsym->destshndx_index
+ * sizeof (Elf_External_Sym_Shndx))));
+ }
+ free (symstrtab);
+
*sttp = stt;
- symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
+ symstrtab_hdr->sh_size = _bfd_elf_strtab_size (stt);
symstrtab_hdr->sh_type = SHT_STRTAB;
symstrtab_hdr->sh_flags = 0;
if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
return TRUE;
+ /* Treat assembler generated fake symbols, dollar local labels and
+ forward-backward labels (aka local labels) as locals.
+ These labels have the form:
+
+ L0^A.* (fake symbols)
+
+ [.]?L[0123456789]+{^A|^B}[0123456789]* (local labels)
+
+ Versions which start with .L will have already been matched above,
+ so we only need to match the rest. */
+ if (name[0] == 'L' && ISDIGIT (name[1]))
+ {
+ bfd_boolean ret = FALSE;
+ const char * p;
+ char c;
+
+ for (p = name + 2; (c = *p); p++)
+ {
+ if (c == 1 || c == 2)
+ {
+ if (c == 1 && p == name + 2)
+ /* A fake symbol. */
+ return TRUE;
+
+ /* FIXME: We are being paranoid here and treating symbols like
+ L0^Bfoo as if there were non-local, on the grounds that the
+ assembler will never generate them. But can any symbol
+ containing an ASCII value in the range 1-31 ever be anything
+ other than some kind of local ? */
+ ret = TRUE;
+ }
+
+ if (! ISDIGIT (c))
+ {
+ ret = FALSE;
+ break;
+ }
+ }
+ return ret;
+ }
+
return FALSE;
}
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
int ret = bed->s->sizeof_ehdr;
- if (!info->relocatable)
+ if (!bfd_link_relocatable (info))
{
bfd_size_type phdr_size = elf_program_header_size (abfd);
&& ! _bfd_elf_compute_section_file_positions (abfd, NULL))
return FALSE;
+ if (!count)
+ return TRUE;
+
hdr = &elf_section_data (section)->this_hdr;
+ if (hdr->sh_offset == (file_ptr) -1)
+ {
+ /* We must compress this section. Write output to the buffer. */
+ unsigned char *contents = hdr->contents;
+ if ((offset + count) > hdr->sh_size
+ || (section->flags & SEC_ELF_COMPRESS) == 0
+ || contents == NULL)
+ abort ();
+ memcpy (contents + offset, location, count);
+ return TRUE;
+ }
pos = hdr->sh_offset + offset;
if (bfd_seek (abfd, pos, SEEK_SET) != 0
|| bfd_bwrite (location, count, abfd) != count)
if (note->namesz == 6
&& strcmp (note->namedata, "LINUX") == 0)
return elfcore_grok_xstatereg (abfd, note);
+ else if (note->namesz == 8
+ && strcmp (note->namedata, "FreeBSD") == 0)
+ return elfcore_grok_xstatereg (abfd, note);
else
return TRUE;
static bfd_boolean
elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note)
{
- struct elf_obj_tdata *t;
+ struct bfd_build_id* build_id;
if (note->descsz == 0)
return FALSE;
- t = elf_tdata (abfd);
- t->build_id = bfd_alloc (abfd, sizeof (*t->build_id) - 1 + note->descsz);
- if (t->build_id == NULL)
+ build_id = bfd_alloc (abfd, sizeof (struct bfd_build_id) - 1 + note->descsz);
+ if (build_id == NULL)
return FALSE;
- t->build_id->size = note->descsz;
- memcpy (t->build_id->data, note->descdata, note->descsz);
+ build_id->size = note->descsz;
+ memcpy (build_id->data, note->descdata, note->descsz);
+ abfd->build_id = build_id;
return TRUE;
}
elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz,
const void *xfpregs, int size)
{
- char *note_name = "LINUX";
+ char *note_name;
+ if (get_elf_backend_data (abfd)->elf_osabi == ELFOSABI_FREEBSD)
+ note_name = "FreeBSD";
+ else
+ note_name = "LINUX";
return elfcore_write_note (abfd, buf, bufsiz,
note_name, NT_X86_XSTATE, xfpregs, size);
}
projects / binutils-gdb.git / blobdiff