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2007-05-16 H.J. Lu <hongjiu.lu@intel.com>

Browse Source 
Alan Modra  <amodra@bigpond.net.au>

	* elflink.c (_bfd_elf_adjust_dynamic_copy): Align dynamic bss
	section to the minimum alignment.
This commit is contained in:
H.J. Lu
2007-05-16 12:52:03 +00:00
parent 8ee82aff44
commit 91ac591132
2 changed files with 25 additions and 19 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2007-05-16 H.J. Lu <hongjiu.lu@intel.com>
Alan Modra <amodra@bigpond.net.au>
* elflink.c (_bfd_elf_adjust_dynamic_copy): Align dynamic bss
section to the minimum alignment.
2007-05-15 H.J. Lu <hongjiu.lu@intel.com> 2007-05-15 H.J. Lu <hongjiu.lu@intel.com>
Alan Modra <amodra@bigpond.net.au> Alan Modra <amodra@bigpond.net.au>

38
bfd/elflink.c
View File

@ -2616,33 +2616,33 @@ bfd_boolean
_bfd_elf_adjust_dynamic_copy (struct elf_link_hash_entry *h, _bfd_elf_adjust_dynamic_copy (struct elf_link_hash_entry *h,
asection *dynbss) asection *dynbss)
{ {
unsigned int power_of_two, orig_power_of_two; unsigned int power_of_two;
bfd_vma mask; bfd_vma mask;
asection *sec = h->root.u.def.section; asection *sec = h->root.u.def.section;
/* The section aligment of definition is the maximum alignment /* The section aligment of definition is the maximum alignment
requirement of symbols defined in the section. */ requirement of symbols defined in the section. Since we don't
power_of_two = bfd_get_section_alignment (dynbss->owner, dynbss); know the symbol alignment requirement, we start with the
orig_power_of_two = bfd_get_section_alignment (sec->owner, sec); maximum alignment and check low bits of the symbol address
for the minimum alignment. */
if (orig_power_of_two > power_of_two) power_of_two = bfd_get_section_alignment (sec->owner, sec);
{ mask = ((bfd_vma) 1 << power_of_two) - 1;
/* Adjust the section alignment if needed. */
if (! bfd_set_section_alignment (dynbss->owner, dynbss,
orig_power_of_two))
return FALSE;
}
/* We make sure that the symbol will be aligned properly. Since we
don't know its alignment requirement, we start with the maximum
alignment and check low bits of the symbol address for the
minimum alignment. */
mask = ((bfd_vma) 1 << orig_power_of_two) - 1;
while ((h->root.u.def.value & mask) != 0) while ((h->root.u.def.value & mask) != 0)
{ {
mask >>= 1; mask >>= 1;
--orig_power_of_two; --power_of_two;
} }
if (power_of_two > bfd_get_section_alignment (dynbss->owner,
dynbss))
{
/* Adjust the section alignment if needed. */
if (! bfd_set_section_alignment (dynbss->owner, dynbss,
power_of_two))
return FALSE;
}
/* We make sure that the symbol will be aligned properly. */
dynbss->size = BFD_ALIGN (dynbss->size, mask + 1); dynbss->size = BFD_ALIGN (dynbss->size, mask + 1);
/* Define the symbol as being at this point in DYNBSS. */ /* Define the symbol as being at this point in DYNBSS. */