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add i386-elf relocs (from Meissner)

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Ken Raeburn
1993-08-05 18:24:21 +00:00
parent 15db204498
commit a49880c83d
1 changed files with 29 additions and 2 deletions
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31
bfd/reloc.c
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@ -579,7 +579,9 @@ DEFUN(bfd_perform_relocation,(abfd,
might have overflowed before we get here. For a correct check we might have overflowed before we get here. For a correct check we
need to compute the value in a size larger than bitsize, but we need to compute the value in a size larger than bitsize, but we
can't reasonably do that for a reloc the same size as a host can't reasonably do that for a reloc the same size as a host
machine word. */ machine word.
FIXME: We should also do overflow checking on the result after
adding in the value contained in the object file. */
if (howto->complain_on_overflow != complain_overflow_dont) if (howto->complain_on_overflow != complain_overflow_dont)
{ {
bfd_vma check; bfd_vma check;
@ -631,7 +633,22 @@ DEFUN(bfd_perform_relocation,(abfd,
if (((bfd_vma) check &~ reloc_bits) != 0 if (((bfd_vma) check &~ reloc_bits) != 0
&& ((bfd_vma) check &~ reloc_bits) != (-1 &~ reloc_bits)) && ((bfd_vma) check &~ reloc_bits) != (-1 &~ reloc_bits))
flag = bfd_reloc_overflow; {
/* The above right shift is incorrect for a signed
value. See if turning on the upper bits fixes the
overflow. */
if (howto->rightshift > howto->bitpos
&& (bfd_signed_vma) relocation < 0)
{
check |= ((bfd_vma) -1
&~ ((bfd_vma) -1
>> (howto->rightshift - howto->bitpos)));
if (((bfd_vma) check &~ reloc_bits) != (-1 &~ reloc_bits))
flag = bfd_reloc_overflow;
}
else
flag = bfd_reloc_overflow;
}
} }
break; break;
default: default:
@ -962,6 +979,16 @@ CODE_FRAGMENT
. BFD_RELOC_HPPA_UNWIND_ENTRY, . BFD_RELOC_HPPA_UNWIND_ENTRY,
. BFD_RELOC_HPPA_UNWIND_ENTRIES, . BFD_RELOC_HPPA_UNWIND_ENTRIES,
. .
. {* i386/elf relocations *}
. BFD_RELOC_386_GOT32,
. BFD_RELOC_386_PLT32,
. BFD_RELOC_386_COPY,
. BFD_RELOC_386_GLOB_DAT,
. BFD_RELOC_386_JUMP_SLOT,
. BFD_RELOC_386_RELATIVE,
. BFD_RELOC_386_GOTOFF,
. BFD_RELOC_386_GOTPC,
.
. {* this must be the highest numeric value *} . {* this must be the highest numeric value *}
. BFD_RELOC_UNUSED . BFD_RELOC_UNUSED
. } bfd_reloc_code_real_type; . } bfd_reloc_code_real_type;