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authorDave Anglin <dave.anglin@nrc.ca>2009-01-25 23:05:20 +0000
committerDave Anglin <dave.anglin@nrc.ca>2009-01-25 23:05:20 +0000
commitaeaf654094927f7ba0a6d8998095f3cb1d988cec (patch)
tree8aa1c09e5aff71004bb7cda515bbeb8de582a226 /bfd/elf-hppa.h
parent293f4bb59e1f21e853875ff1034defc12cb0fbf2 (diff)
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* elf-hppa.h (elf_hppa_final_link_relocate): Add check to ensure that
branch targets can be reached for R_PARISC_PCREL22F, R_PARISC_PCREL17F and R_PARISC_PCREL12F relocations.
Diffstat (limited to 'bfd/elf-hppa.h')
-rw-r--r--bfd/elf-hppa.h26
1 files changed, 24 insertions, 2 deletions
diff --git a/bfd/elf-hppa.h b/bfd/elf-hppa.h
index 0aff4cc..b371c0e 100644
--- a/bfd/elf-hppa.h
+++ b/bfd/elf-hppa.h
@@ -1606,10 +1606,11 @@ elf_hppa_final_link_relocate (Elf_Internal_Rela *rel,
bfd_vma value,
struct bfd_link_info *info,
asection *sym_sec,
- struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
+ struct elf_link_hash_entry *h,
struct elf64_hppa_dyn_hash_entry *dyn_h)
{
int insn;
+ bfd_vma max_branch_offset = 0;
bfd_vma offset = rel->r_offset;
bfd_signed_vma addend = rel->r_addend;
reloc_howto_type *howto = elf_hppa_howto_table + ELF_R_TYPE (rel->r_info);
@@ -1629,7 +1630,7 @@ elf_hppa_final_link_relocate (Elf_Internal_Rela *rel,
Note for a call to a function defined in another dynamic library
we want to redirect the call to a stub. */
- /* Random PC relative relocs. */
+ /* PC relative relocs without an implicit offset. */
case R_PARISC_PCREL21L:
case R_PARISC_PCREL14R:
case R_PARISC_PCREL14F:
@@ -1684,6 +1685,27 @@ elf_hppa_final_link_relocate (Elf_Internal_Rela *rel,
value -= (offset + input_section->output_offset
+ input_section->output_section->vma);
+ if (r_type == (unsigned int) R_PARISC_PCREL22F)
+ max_branch_offset = (1 << (22-1)) << 2;
+ else if (r_type == (unsigned int) R_PARISC_PCREL17F)
+ max_branch_offset = (1 << (17-1)) << 2;
+ else if (r_type == (unsigned int) R_PARISC_PCREL12F)
+ max_branch_offset = (1 << (12-1)) << 2;
+
+ /* Make sure we can reach the branch target. */
+ if (max_branch_offset != 0
+ && value + addend + max_branch_offset >= 2*max_branch_offset)
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): cannot reach %s"),
+ input_bfd,
+ input_section,
+ offset,
+ h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
+
/* Adjust for any field selectors. */
if (r_type == R_PARISC_PCREL17R)
value = hppa_field_adjust (value, -8 + addend, e_rsel);