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| author | Alan Modra <amodra@gmail.com> | 2017-02-28 23:42:29 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-02-28 23:49:28 +1030 |
| commit | 3de43e7beb9839fa268a73be77de73a7b7cd97db (patch) | |
| tree | 70e24494b90d6c35a204c299764b62d757adea7d /bfd/elf64-ppc.c | |
| parent | 15c7c1d8a535000e94ed36f4259d0ede32001408 (diff) | |
| download | gdb-3de43e7beb9839fa268a73be77de73a7b7cd97db.zip gdb-3de43e7beb9839fa268a73be77de73a7b7cd97db.tar.gz gdb-3de43e7beb9839fa268a73be77de73a7b7cd97db.tar.bz2 | |
PowerPC addpcis fix again
In the last patch I said "The patch also fixes overflow checking".
In fact, there wasn't anything wrong with the previous code. So,
revert that change. The new checks are OK too, so this is just a
tidy.
* elf64-ppc.c (ppc64_elf_ha_reloc): Revert last change.
(ppc64_elf_relocate_section): Likewise.
Diffstat (limited to 'bfd/elf64-ppc.c')
| -rw-r--r-- | bfd/elf64-ppc.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index 661ef26..5ecd1a3 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -2529,7 +2529,7 @@ ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, enum elf_ppc64_reloc_type r_type; long insn; bfd_size_type octets; - bfd_vma value, field; + bfd_vma value; /* If this is a relocatable link (output_bfd test tells us), just call the generic function. Any adjustment will be done at final @@ -2555,14 +2555,14 @@ ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, value -= (reloc_entry->address + input_section->output_offset + input_section->output_section->vma); - field = (bfd_signed_vma) value >> 16; + value = (bfd_signed_vma) value >> 16; octets = reloc_entry->address * bfd_octets_per_byte (abfd); insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); insn &= ~0x1fffc1; - insn |= (field & 0xffc1) | ((field & 0x3e) << 15); + insn |= (value & 0xffc1) | ((value & 0x3e) << 15); bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); - if (value + 0x80000000 > 0xffffffff) + if (value + 0x8000 > 0xffff) return bfd_reloc_overflow; return bfd_reloc_ok; } @@ -15255,19 +15255,17 @@ ppc64_elf_relocate_section (bfd *output_bfd, r = bfd_reloc_outofrange; else { - bfd_signed_vma field; - relocation += addend; relocation -= (rel->r_offset + input_section->output_offset + input_section->output_section->vma); - field = (bfd_signed_vma) relocation >> 16; + relocation = (bfd_signed_vma) relocation >> 16; insn = bfd_get_32 (input_bfd, contents + rel->r_offset); insn &= ~0x1fffc1; - insn |= (field & 0xffc1) | ((field & 0x3e) << 15); + insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); bfd_put_32 (input_bfd, insn, contents + rel->r_offset); r = bfd_reloc_ok; - if (relocation + 0x80000000 > 0xffffffff) + if (relocation + 0x8000 > 0xffff) r = bfd_reloc_overflow; } } |