asection * section;
/* Number of relocs copied in this section. */
bfd_size_type count;
- /* Number of relocs copied in this section. */
- bfd_size_type pc_count;
};
/* Arm ELF linker hash entry. */
for (q = edir->relocs_copied; q != NULL; q = q->next)
if (q->section == p->section)
{
- q->pc_count += p->pc_count;
q->count += p->count;
*pp = p->next;
break;
#ifndef OLD_ARM_ABI
case R_ARM_XPC25:
#endif
+ case R_ARM_PLT32:
/* r_symndx will be zero only for relocs against symbols
from removed linkonce sections, or sections discarded by
a linker script. */
if (r_symndx == 0)
return bfd_reloc_ok;
+ /* Handle relocations which should use the PLT entry. ABS32/REL32
+ will use the symbol's value, which may point to a PLT entry, but we
+ don't need to handle that here. If we created a PLT entry, all
+ branches in this object should go to it. */
+ if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32)
+ && h != NULL
+ && h->plt.offset != (bfd_vma) -1)
+ {
+ BFD_ASSERT (splt != NULL);
+ BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
+
+ value = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset);
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+ }
+
/* When generating a shared object, these relocations are copied
into the output file to be resolved at run time. */
- if ((info->shared
- && (input_section->flags & SEC_ALLOC)
- && (h == NULL
- || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak)
- && (r_type != R_ARM_PC24
- || !SYMBOL_CALLS_LOCAL (info, h))))
+ if (info->shared
+ && (input_section->flags & SEC_ALLOC)
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && r_type != R_ARM_PC24
+ && r_type != R_ARM_PLT32)
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
memset (&outrel, 0, sizeof outrel);
else if (h != NULL
&& h->dynindx != -1
- && (r_type == R_ARM_PC24
- || !info->shared
+ && (!info->shared
|| !info->symbolic
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))
case R_ARM_XPC25: /* Arm BLX instruction. */
#endif
case R_ARM_PC24: /* Arm B/BL instruction */
+ case R_ARM_PLT32:
#ifndef OLD_ARM_ABI
if (r_type == R_ARM_XPC25)
{
contents, rel->r_offset, value,
(bfd_vma) 0);
- case R_ARM_PLT32:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table. */
-
- /* Resolve a PLT32 reloc against a local symbol directly,
- without using the procedure linkage table. */
- if (h == NULL)
- return _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset, value,
- (bfd_vma) 0);
-
- if (h->plt.offset == (bfd_vma) -1
- || globals->splt == NULL)
- /* We didn't make a PLT entry for this symbol. This
- happens when statically linking PIC code, or when
- using -Bsymbolic. */
- return _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset, value,
- (bfd_vma) 0);
-
- BFD_ASSERT(splt != NULL);
- if (splt == NULL)
- return bfd_reloc_notsupported;
-
- value = (splt->output_section->vma
- + splt->output_offset
- + h->plt.offset);
- return _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset, value,
- (bfd_vma) 0);
-
case R_ARM_SBREL32:
return bfd_reloc_notsupported;
case R_ARM_ABS32:
case R_ARM_REL32:
case R_ARM_PC24:
+ case R_ARM_PLT32:
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (!info->shared && h->plt.refcount > 0)
+ if (h->plt.refcount > 0)
h->plt.refcount -= 1;
- eh = (struct elf32_arm_link_hash_entry *) h;
-
- for (pp = &eh->relocs_copied; (p = *pp) != NULL; pp = &p->next)
- if (p->section == sec)
- {
- if (ELF32_R_TYPE (rel->r_info) == R_ARM_PC24)
- p->pc_count -= 1;
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- break;
- }
- }
- break;
+ if (ELF32_R_TYPE (rel->r_info) == R_ARM_ABS32
+ || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32)
+ {
+ eh = (struct elf32_arm_link_hash_entry *) h;
- case R_ARM_PLT32:
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->plt.refcount > 0)
- h->plt.refcount -= 1;
+ for (pp = &eh->relocs_copied; (p = *pp) != NULL;
+ pp = &p->next)
+ if (p->section == sec)
+ {
+ p->count -= 1;
+ if (p->count == 0)
+ *pp = p->next;
+ break;
+ }
+ }
}
break;
switch (ELF32_R_TYPE (rel->r_info))
{
- case R_ARM_PLT32:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code which is
- never referenced by a dynamic object, in which case we
- don't need to generate a procedure linkage table entry
- after all. */
-
- /* If this is a local symbol, we resolve it directly without
- creating a procedure linkage table entry. */
- if (h == NULL)
- continue;
-
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->plt.refcount++;
- break;
-
case R_ARM_GOT32:
/* This symbol requires a global offset table entry. */
if (h != NULL)
case R_ARM_ABS32:
case R_ARM_REL32:
case R_ARM_PC24:
- if (h != NULL && !info->shared)
+ case R_ARM_PLT32:
+ if (h != NULL)
{
/* If this reloc is in a read-only section, we might
need a copy reloc. We can't check reliably at this
sections have not yet been mapped to output sections.
Tentatively set the flag for now, and correct in
adjust_dynamic_symbol. */
- h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
-
+ if (!info->shared)
+ h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+
/* We may need a .plt entry if the function this reloc
- refers to is in a shared lib. */
+ refers to is in a different object. */
+ if (ELF32_R_TYPE (rel->r_info) == R_ARM_PC24
+ || ELF32_R_TYPE (rel->r_info) == R_ARM_PLT32)
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+
h->plt.refcount += 1;
}
relocs_copied field of the hash table entry. */
if (info->shared
&& (sec->flags & SEC_ALLOC) != 0
- && (ELF32_R_TYPE (rel->r_info) != R_ARM_PC24
+ && ((ELF32_R_TYPE (rel->r_info) != R_ARM_PC24
+ && ELF32_R_TYPE (rel->r_info) != R_ARM_PLT32)
|| (h != NULL
&& (! info->symbolic
|| (h->elf_link_hash_flags
*head = p;
p->section = sec;
p->count = 0;
- p->pc_count = 0;
}
- p->count += 1;
- if (ELF32_R_TYPE (rel->r_info) == R_ARM_PC24)
- p->pc_count += 1;
+ if (ELF32_R_TYPE (rel->r_info) == R_ARM_ABS32
+ || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32)
+ p->count += 1;
}
break;
}
if (info->shared
- || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->splt;
if (info->shared)
{
- /* The only reloc that uses pc_count is R_ARM_PC24, which will
- appear on a call or on something like ".long foo - .". We
- want calls to protected symbols to resolve directly to the
- function rather than going via the plt. If people want
- function pointer comparisons to work as expected then they
- should avoid writing assembly like ".long foo - .". */
- if (SYMBOL_CALLS_LOCAL (info, h))
- {
- struct elf32_arm_relocs_copied **pp;
-
- for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
- {
- p->count -= p->pc_count;
- p->pc_count = 0;
- if (p->count == 0)
- *pp = p->next;
- else
- pp = &p->next;
- }
- }
-
- /* Also discard relocs on undefined weak syms with non-default
- visibility. */
+ /* Discard relocs on undefined weak syms with non-default
+ visibility. */
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak)
eh->relocs_copied = NULL;
projects / external / binutils.git / commitdiff