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Do not include empty sections in loadable segments.

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This commit is contained in:
Nick Clifton
2002-06-06 10:03:38 +00:00
parent df3513d4be
commit 1ed89aa92e
6 changed files with 142 additions and 3 deletions
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8
bfd/ChangeLog
View File

@ -1,3 +1,9 @@
2002-06-06 David Heine <dlheine@tensilica.com>
* elf.c (assign_file_positions_for_segments): Remove unallocated
sections from the section to segment mapping for PT_LOAD segments.
Update comment about empty loadable segments.
2002-06-06 Richard Sandiford <rsandifo@redhat.com>
* stabs.c (_bfd_link_section_stabs): Check that the symbol offset
@ -44,7 +50,7 @@
* elf64-sh64.c (sh_elf64_get_relocated_section_contents): Likewise.
* elfxx-ia64.c (elfNN_ia64_relax_section): Likewise.
Wed Jun 5 20:43:27 2002 J"orn Rennecke <joern.rennecke@superh.com>
2002-06-05 J"orn Rennecke <joern.rennecke@superh.com>
* config.bfd (sh64l*-*-elf*, shl*-*-elf*): New configurations.

36
bfd/elf.c
View File

@ -3455,6 +3455,37 @@ assign_file_positions_for_segments (abfd)
if (! map_sections_to_segments (abfd))
return false;
}
else
{
/* The placement algorithm assumes that non allocated sections are
not in PT_LOAD segments. We ensure this here by removing such
sections from the segment map. */
for (m = elf_tdata (abfd)->segment_map;
m != NULL;
m = m->next)
{
unsigned int new_count;
unsigned int i;
if (m->p_type != PT_LOAD)
continue;
new_count = 0;
for (i = 0; i < m->count; i ++)
{
if ((m->sections[i]->flags & SEC_ALLOC) != 0)
{
if (i != new_count)
m->sections[new_count] = m->sections[i];
new_count ++;
}
}
if (new_count != m->count)
m->count = new_count;
}
}
if (bed->elf_backend_modify_segment_map)
{
@ -4610,10 +4641,11 @@ copy_private_bfd_data (ibfd, obfd)
{
/* Special segments, such as the PT_PHDR segment, may contain
no sections, but ordinary, loadable segments should contain
something. */
something. They are allowed by the ELF spec however, so only
a warning is produced. */
if (segment->p_type == PT_LOAD)
(*_bfd_error_handler)
(_("%s: warning: Empty loadable segment detected\n"),
(_("%s: warning: Empty loadable segment detected, is this intentional ?\n"),
bfd_archive_filename (ibfd));
map->count = 0;