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* coffcode.h (coff_set_alignment_hook): With PE_COFF reloc

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overflow, set reloc start position to after the count
	reloc. Subtract one from num relocs. Give error on 0xffff relocs
	and no overflow.
	* cofflink.c (_bfd_coff_final_link): Deal with PE_COFF reloc
	overflow.
	* peXXigen.c (_bfd_XXi_swap_scnhdr_out): Do overflow if >=
	0xffff.
This commit is contained in:
Nathan Sidwell
2003-10-07 08:49:11 +00:00
parent 2f9626f3fd
commit cd339148de
4 changed files with 46 additions and 8 deletions
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11
bfd/ChangeLog
View File

@ -1,3 +1,14 @@
2003-10-07 Nathan Sidwell <nathan@codesourcery.com>
* coffcode.h (coff_set_alignment_hook): With PE_COFF reloc
overflow, set reloc start position to after the count
reloc. Subtract one from num relocs. Give error on 0xffff relocs
and no overflow.
* cofflink.c (_bfd_coff_final_link): Deal with PE_COFF reloc
overflow.
* peXXigen.c (_bfd_XXi_swap_scnhdr_out): Do overflow if >=
0xffff.
2003-10-06 H.J. Lu <hongjiu.lu@intel.com> 2003-10-06 H.J. Lu <hongjiu.lu@intel.com>
* elf-eh-frame.c (_bfd_elf_write_section_eh_frame): Pad the * elf-eh-frame.c (_bfd_elf_write_section_eh_frame): Pad the

12
bfd/coffcode.h
View File

@ -1694,15 +1694,21 @@ coff_set_alignment_hook (abfd, section, scnhdr)
struct external_reloc dst; struct external_reloc dst;
struct internal_reloc n; struct internal_reloc n;
file_ptr oldpos = bfd_tell (abfd); file_ptr oldpos = bfd_tell (abfd);
bfd_size_type relsz = bfd_coff_relsz (abfd);
bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0); bfd_seek (abfd, (file_ptr) hdr->s_relptr, 0);
if (bfd_bread ((PTR) &dst, (bfd_size_type) bfd_coff_relsz (abfd), abfd) if (bfd_bread ((PTR) &dst, relsz, abfd) != relsz)
!= bfd_coff_relsz (abfd))
return; return;
coff_swap_reloc_in (abfd, &dst, &n); coff_swap_reloc_in (abfd, &dst, &n);
bfd_seek (abfd, oldpos, 0); bfd_seek (abfd, oldpos, 0);
section->reloc_count = hdr->s_nreloc = n.r_vaddr; section->reloc_count = hdr->s_nreloc = n.r_vaddr - 1;
section->rel_filepos += relsz;
} }
else if (hdr->s_nreloc == 0xffff)
(*_bfd_error_handler)
("%s: warning: claims to have 0xffff relocs, without overflow",
bfd_get_filename (abfd));
} }
#undef ALIGN_SET #undef ALIGN_SET
#undef ELIFALIGN_SET #undef ELIFALIGN_SET

23
bfd/cofflink.c
View File

@ -1028,10 +1028,27 @@ _bfd_coff_final_link (bfd *abfd,
bfd_coff_swap_reloc_out (abfd, irel, erel); bfd_coff_swap_reloc_out (abfd, irel, erel);
} }
if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0 if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0)
|| (bfd_bwrite (external_relocs, goto error_return;
if (obj_pe (abfd) && o->reloc_count >= 0xffff)
{
/* In PE COFF, write the count of relocs as the first
reloc. The header overflow bit will be set
elsewhere. */
struct internal_reloc incount;
bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz);
memset (&incount, 0, sizeof (incount));
incount.r_vaddr = o->reloc_count + 1;
bfd_coff_swap_reloc_out (abfd, (PTR) &incount, (PTR) excount);
if (bfd_bwrite (excount, relsz, abfd) != relsz)
/* We'll leak, but it's an error anyway. */
goto error_return;
free (excount);
}
if (bfd_bwrite (external_relocs,
(bfd_size_type) relsz * o->reloc_count, abfd) (bfd_size_type) relsz * o->reloc_count, abfd)
!= (bfd_size_type) relsz * o->reloc_count)) != (bfd_size_type) relsz * o->reloc_count)
goto error_return; goto error_return;
} }

6
bfd/peXXigen.c
View File

@ -990,7 +990,11 @@ _bfd_XXi_swap_scnhdr_out (abfd, in, out)
ret = 0; ret = 0;
} }
if (scnhdr_int->s_nreloc <= 0xffff) /* Although we could encode 0xffff relocs here, we do not, to be
consistent with other parts of bfd. Also it lets us warn, as
we should never see 0xffff here w/o having the overflow flag
set. */
if (scnhdr_int->s_nreloc < 0xffff)
H_PUT_16 (abfd, scnhdr_int->s_nreloc, scnhdr_ext->s_nreloc); H_PUT_16 (abfd, scnhdr_int->s_nreloc, scnhdr_ext->s_nreloc);
else else
{ {