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* elf32-xtensa.c (relax_section): Check for a reference to a discarded

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DWARF section and anticipate its replacement with the kept section.
This commit is contained in:
Bob Wilson 2007-10-17 00:30:31 +00:00
parent bb14a92538
commit ae326da8eb
2 changed files with 54 additions and 1 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2007-10-16 Bob Wilson <bob.wilson@acm.org>
* elf32-xtensa.c (relax_section): Check for a reference to a discarded
DWARF section and anticipate its replacement with the kept section.
2007-10-16 Bob Wilson <bob.wilson@acm.org>
* elf32-xtensa.c (elf_xtensa_discard_info_for_section): Remove

50
bfd/elf32-xtensa.c
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@ -8150,8 +8150,56 @@ relax_section (bfd *abfd, asection *sec, struct bfd_link_info *link_info)
we may need to change the relocation's target offset. */
target_sec = r_reloc_get_section (&r_rel);
target_relax_info = get_xtensa_relax_info (target_sec);
/* For a reference to a discarded section from a DWARF section,
i.e., where action_discarded is PRETEND, the symbol will
eventually be modified to refer to the kept section (at least if
the kept and discarded sections are the same size). Anticipate
that here and adjust things accordingly. */
if (! elf_xtensa_ignore_discarded_relocs (sec)
&& elf_xtensa_action_discarded (sec) == PRETEND
&& sec->sec_info_type != ELF_INFO_TYPE_STABS
&& target_sec != NULL
&& elf_discarded_section (target_sec))
{
/* It would be natural to call _bfd_elf_check_kept_section
here, but it's not exported from elflink.c. It's also a
fairly expensive check. Adjusting the relocations to the
discarded section is fairly harmless; it will only adjust
some addends and difference values. If it turns out that
_bfd_elf_check_kept_section fails later, it won't matter,
so just compare the section names to find the right group
member. */
asection *kept = target_sec->kept_section;
if (kept != NULL)
{
if ((kept->flags & SEC_GROUP) != 0)
{
asection *first = elf_next_in_group (kept);
asection *s = first;
kept = NULL;
while (s != NULL)
{
if (strcmp (s->name, target_sec->name) == 0)
{
kept = s;
break;
}
s = elf_next_in_group (s);
if (s == first)
break;
}
}
}
if (kept != NULL
&& ((target_sec->rawsize != 0
? target_sec->rawsize : target_sec->size)
== (kept->rawsize != 0 ? kept->rawsize : kept->size)))
target_sec = kept;
}
target_relax_info = get_xtensa_relax_info (target_sec);
if (target_relax_info
&& (target_relax_info->is_relaxable_literal_section
|| target_relax_info->is_relaxable_asm_section))