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* elf.c: (_bfd_elf_make_section_from_phdr): Properly handle 

bss segments.
This commit is contained in:
Alan Modra 2007-08-06 22:53:27 +00:00
parent 5eda1c47e4
commit d5191d0cd4
2 changed files with 53 additions and 29 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2007-08-07 Alan Modra <amodra@bigpond.net.au>
* elf.c: (_bfd_elf_make_section_from_phdr): Properly handle
bss segments.
2007-08-06 Daniel Jacobowitz <dan@codesourcery.com>
* Makefile.am (BUILD_HFILES): Clean bfd_stdint.h.

77
bfd/elf.c
View File

@ -2223,7 +2223,7 @@ _bfd_elf_new_section_hook (bfd *abfd, asection *sec)
for the single program segment. The first has the length specified by
the file size of the segment, and the second has the length specified
by the difference between the two sizes. In effect, the segment is split
into it's initialized and uninitialized parts.
into its initialized and uninitialized parts.
*/
@ -2242,40 +2242,46 @@ _bfd_elf_make_section_from_phdr (bfd *abfd,
split = ((hdr->p_memsz > 0)
&& (hdr->p_filesz > 0)
&& (hdr->p_memsz > hdr->p_filesz));
sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
len = strlen (namebuf) + 1;
name = bfd_alloc (abfd, len);
if (!name)
return FALSE;
memcpy (name, namebuf, len);
newsect = bfd_make_section (abfd, name);
if (newsect == NULL)
return FALSE;
newsect->vma = hdr->p_vaddr;
newsect->lma = hdr->p_paddr;
newsect->size = hdr->p_filesz;
newsect->filepos = hdr->p_offset;
newsect->flags |= SEC_HAS_CONTENTS;
newsect->alignment_power = bfd_log2 (hdr->p_align);
if (hdr->p_type == PT_LOAD)
if (hdr->p_filesz > 0)
{
newsect->flags |= SEC_ALLOC;
newsect->flags |= SEC_LOAD;
if (hdr->p_flags & PF_X)
sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
len = strlen (namebuf) + 1;
name = bfd_alloc (abfd, len);
if (!name)
return FALSE;
memcpy (name, namebuf, len);
newsect = bfd_make_section (abfd, name);
if (newsect == NULL)
return FALSE;
newsect->vma = hdr->p_vaddr;
newsect->lma = hdr->p_paddr;
newsect->size = hdr->p_filesz;
newsect->filepos = hdr->p_offset;
newsect->flags |= SEC_HAS_CONTENTS;
newsect->alignment_power = bfd_log2 (hdr->p_align);
if (hdr->p_type == PT_LOAD)
{
/* FIXME: all we known is that it has execute PERMISSION,
may be data. */
newsect->flags |= SEC_CODE;
newsect->flags |= SEC_ALLOC;
newsect->flags |= SEC_LOAD;
if (hdr->p_flags & PF_X)
{
/* FIXME: all we known is that it has execute PERMISSION,
may be data. */
newsect->flags |= SEC_CODE;
}
}
if (!(hdr->p_flags & PF_W))
{
newsect->flags |= SEC_READONLY;
}
}
if (!(hdr->p_flags & PF_W))
{
newsect->flags |= SEC_READONLY;
}
if (split)
if (hdr->p_memsz > hdr->p_filesz)
{
sprintf (namebuf, "%s%db", typename, index);
bfd_vma align;
sprintf (namebuf, "%s%d%s", typename, index, split ? "b" : "");
len = strlen (namebuf) + 1;
name = bfd_alloc (abfd, len);
if (!name)
@ -2287,8 +2293,21 @@ _bfd_elf_make_section_from_phdr (bfd *abfd,
newsect->vma = hdr->p_vaddr + hdr->p_filesz;
newsect->lma = hdr->p_paddr + hdr->p_filesz;
newsect->size = hdr->p_memsz - hdr->p_filesz;
newsect->filepos = hdr->p_offset + hdr->p_filesz;
align = newsect->vma & -newsect->vma;
if (align == 0 || align > hdr->p_align)
align = hdr->p_align;
newsect->alignment_power = bfd_log2 (align);
if (hdr->p_type == PT_LOAD)
{
/* Hack for gdb. Segments that have not been modified do
not have their contents written to a core file, on the
assumption that a debugger can find the contents in the
executable. We flag this case by setting the fake
section size to zero. Note that "real" bss sections will
always have their contents dumped to the core file. */
if (bfd_get_format (abfd) == bfd_core)
newsect->size = 0;
newsect->flags |= SEC_ALLOC;
if (hdr->p_flags & PF_X)
newsect->flags |= SEC_CODE;