static bfd_boolean elf_s390_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
+struct elf_s390_link_hash_entry;
+static void elf_s390_adjust_gotplt
+ PARAMS ((struct elf_s390_link_hash_entry *));
static bfd_boolean elf_s390_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static bfd_boolean allocate_dynrelocs
0, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
- HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
- HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
- HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GLOB_DAT",FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_JMP_SLOT",FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_RELATIVE",FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTOFF", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
+ HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_RELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,0xffffffff, TRUE),
+ EMPTY_HOWTO (R_390_64), /* Empty entry for R_390_64. */
+ EMPTY_HOWTO (R_390_PC64), /* Empty entry for R_390_PC64. */
+ EMPTY_HOWTO (R_390_GOT64), /* Empty entry for R_390_GOT64. */
+ EMPTY_HOWTO (R_390_PLT64), /* Empty entry for R_390_PLT64. */
+ HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
+ EMPTY_HOWTO (R_390_GOTOFF64), /* Empty entry for R_390_GOTOFF64. */
+ HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_GOTPLT64), /* Empty entry for R_390_GOTPLT64. */
+ HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
+ EMPTY_HOWTO (R_390_PLTOFF64), /* Empty entry for R_390_PLTOFF64. */
};
/* GNU extension to record C++ vtable hierarchy. */
case BFD_RELOC_390_RELATIVE:
return &elf_howto_table[(int) R_390_RELATIVE];
case BFD_RELOC_32_GOTOFF:
- return &elf_howto_table[(int) R_390_GOTOFF];
+ return &elf_howto_table[(int) R_390_GOTOFF32];
case BFD_RELOC_390_GOTPC:
return &elf_howto_table[(int) R_390_GOTPC];
case BFD_RELOC_390_GOT16:
return &elf_howto_table[(int) R_390_GOTPCDBL];
case BFD_RELOC_390_GOTENT:
return &elf_howto_table[(int) R_390_GOTENT];
+ case BFD_RELOC_16_GOTOFF:
+ return &elf_howto_table[(int) R_390_GOTOFF16];
+ case BFD_RELOC_390_GOTPLT12:
+ return &elf_howto_table[(int) R_390_GOTPLT12];
+ case BFD_RELOC_390_GOTPLT16:
+ return &elf_howto_table[(int) R_390_GOTPLT16];
+ case BFD_RELOC_390_GOTPLT32:
+ return &elf_howto_table[(int) R_390_GOTPLT32];
+ case BFD_RELOC_390_GOTPLTENT:
+ return &elf_howto_table[(int) R_390_GOTPLTENT];
+ case BFD_RELOC_390_PLTOFF16:
+ return &elf_howto_table[(int) R_390_PLTOFF16];
+ case BFD_RELOC_390_PLTOFF32:
+ return &elf_howto_table[(int) R_390_PLTOFF32];
case BFD_RELOC_VTABLE_INHERIT:
return &elf32_s390_vtinherit_howto;
case BFD_RELOC_VTABLE_ENTRY:
/* Track dynamic relocs copied for this symbol. */
struct elf_s390_dyn_relocs *dyn_relocs;
+
+ /* Number of GOTPLT references for a function. */
+ bfd_signed_vma gotplt_refcount;
};
/* s390 ELF linker hash table. */
eh = (struct elf_s390_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
+ eh->gotplt_refcount = 0;
}
return entry;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
+ bfd_signed_vma *local_got_refcounts;
if (info->relocateable)
return TRUE;
htab = elf_s390_hash_table (info);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
sreloc = NULL;
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ /* Create got section and local_got_refcounts array if they
+ are needed. */
switch (ELF32_R_TYPE (rel->r_info))
{
case R_390_GOT12:
- case R_390_GOT16:
+ case R_390_GOT16:
case R_390_GOT32:
case R_390_GOTENT:
- /* This symbol requires a global offset table entry. */
- if (h != NULL)
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLTENT:
+ if (h == NULL
+ && local_got_refcounts == NULL)
{
- h->got.refcount += 1;
- }
- else
- {
- bfd_signed_vma *local_got_refcounts;
-
- /* This is a global offset table entry for a local symbol. */
- local_got_refcounts = elf_local_got_refcounts (abfd);
+ bfd_size_type size;
+
+ size = symtab_hdr->sh_info;
+ size *= sizeof (bfd_signed_vma);
+ local_got_refcounts = ((bfd_signed_vma *)
+ bfd_zalloc (abfd, size));
if (local_got_refcounts == NULL)
- {
- bfd_size_type size;
-
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts = ((bfd_signed_vma *)
- bfd_zalloc (abfd, size));
- if (local_got_refcounts == NULL)
- return FALSE;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- }
- local_got_refcounts[r_symndx] += 1;
+ return FALSE;
+ elf_local_got_refcounts (abfd) = local_got_refcounts;
}
- /* Fall through */
-
- case R_390_GOTOFF:
+ /* Fall through. */
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
case R_390_GOTPC:
case R_390_GOTPCDBL:
if (htab->sgot == NULL)
if (!create_got_section (htab->elf.dynobj, info))
return FALSE;
}
+ }
+
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT32:
+ case R_390_GOTENT:
+ /* This symbol requires a global offset table entry. */
+ if (h != NULL)
+ h->got.refcount += 1;
+ else
+ local_got_refcounts[r_symndx] += 1;
+ break;
+
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ /* Got is created, nothing to be done. */
break;
case R_390_PLT16DBL:
case R_390_PLT32DBL:
case R_390_PLT32:
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
/* 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
/* If this is a local symbol, we resolve it directly without
creating a procedure linkage table entry. */
- if (h == NULL)
- continue;
+ if (h != NULL)
+ {
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->plt.refcount += 1;
+ }
+ break;
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->plt.refcount += 1;
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLTENT:
+ /* This symbol requires either a procedure linkage table entry
+ or an entry in the local got. We actually build the entry
+ in adjust_dynamic_symbol because whether this is really a
+ global reference can change and with it the fact if we have
+ to create a plt entry or a local got entry. To be able to
+ make a once global symbol a local one we have to keep track
+ of the number of gotplt references that exist for this
+ symbol. */
+ if (h != NULL)
+ {
+ ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->plt.refcount += 1;
+ }
+ else
+ local_got_refcounts[r_symndx] += 1;
break;
case R_390_8:
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- case R_390_GOTOFF:
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- case R_390_GOTENT:
- 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->got.refcount > 0)
- h->got.refcount -= 1;
- }
- else if (local_got_refcounts != NULL)
- {
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx] -= 1;
- }
- break;
+ {
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT32:
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ case R_390_GOTENT:
+ if (h != NULL)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+ break;
+
+ case R_390_PLT16DBL:
+ case R_390_PLT32DBL:
+ case R_390_PLT32:
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
+ break;
- case R_390_8:
- case R_390_12:
- case R_390_16:
- case R_390_32:
- case R_390_PC16:
- case R_390_PC16DBL:
- case R_390_PC32DBL:
- case R_390_PC32:
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- struct elf_s390_link_hash_entry *eh;
- struct elf_s390_dyn_relocs **pp;
- struct elf_s390_dyn_relocs *p;
-
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-
- if (!info->shared && h->plt.refcount > 0)
- h->plt.refcount -= 1;
-
- eh = (struct elf_s390_link_hash_entry *) h;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- if (p->sec == sec)
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLTENT:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
{
- if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
- || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
- || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
- || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
- p->pc_count -= 1;
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- break;
+ ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
+ h->plt.refcount -= 1;
}
- }
- break;
-
- case R_390_PLT16DBL:
- case R_390_PLT32DBL:
- case R_390_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;
- }
- break;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+ break;
- default:
- break;
- }
+ case R_390_8:
+ case R_390_12:
+ case R_390_16:
+ case R_390_32:
+ case R_390_PC16:
+ case R_390_PC16DBL:
+ case R_390_PC32DBL:
+ case R_390_PC32:
+ if (h != NULL)
+ {
+ struct elf_s390_link_hash_entry *eh;
+ struct elf_s390_dyn_relocs **pp;
+ struct elf_s390_dyn_relocs *p;
+
+ if (!info->shared && h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+
+ eh = (struct elf_s390_link_hash_entry *) h;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ if (ELF32_R_TYPE (rel->r_info) == R_390_PC16
+ || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL
+ || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL
+ || ELF32_R_TYPE (rel->r_info) == R_390_PC32)
+ p->pc_count -= 1;
+ p->count -= 1;
+ if (p->count == 0)
+ *pp = p->next;
+ break;
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
return TRUE;
}
+/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
+ entry but we found we will not create any. Called when we find we will
+ not have any PLT for this symbol, by for example
+ elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
+ or elf_s390_size_dynamic_sections if no dynamic sections will be
+ created (we're only linking static objects). */
+
+static void
+elf_s390_adjust_gotplt (h)
+ struct elf_s390_link_hash_entry *h;
+{
+ if (h->elf.root.type == bfd_link_hash_warning)
+ h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
+
+ if (h->gotplt_refcount <= 0)
+ return;
+
+ /* We simply add the number of gotplt references to the number
+ * of got references for this symbol. */
+ h->elf.got.refcount += h->gotplt_refcount;
+ h->gotplt_refcount = -1;
+}
+
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
linkage table, and we can just do a PC32 reloc instead. */
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
return TRUE;
return TRUE;
if (h->root.type == bfd_link_hash_warning)
+ /* When warning symbols are created, they **replace** the "real"
+ entry in the hash table, thus we never get to see the real
+ symbol in a hash traversal. So look at it now. */
h = (struct elf_link_hash_entry *) h->root.u.i.link;
info = (struct bfd_link_info *) inf;
{
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
}
else
{
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
if (h->got.refcount > 0)
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
- int r_type;
+ unsigned int r_type;
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
if (r_type == (int) R_390_GNU_VTINHERIT
|| r_type == (int) R_390_GNU_VTENTRY)
continue;
- if (r_type < 0 || r_type >= (int) R_390_max)
+ if (r_type >= (int) R_390_max)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
howto = elf_howto_table + r_type;
r_symndx = ELF32_R_SYM (rel->r_info);
+
+ /* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
switch (r_type)
{
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLTENT:
+ /* There are three cases for a GOTPLT relocation. 1) The
+ relocation is against the jump slot entry of a plt that
+ will get emitted to the output file. 2) The relocation
+ is against the jump slot of a plt entry that has been
+ removed. elf_s390_adjust_gotplt has created a GOT entry
+ as replacement. 3) The relocation is against a local symbol.
+ Cases 2) and 3) are the same as the GOT relocation code
+ so we just have to test for case 1 and fall through for
+ the other two. */
+ if (h != NULL && h->plt.offset != (bfd_vma) -1)
+ {
+ bfd_vma plt_index;
+
+ /* Calc. index no.
+ Current offset - size first entry / entry size. */
+ plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
+ PLT_ENTRY_SIZE;
+
+ /* Offset in GOT is PLT index plus GOT headers(3) times 4,
+ addr & GOT addr. */
+ relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
+ unresolved_reloc = FALSE;
+
+ if (r_type == R_390_GOTPLTENT)
+ relocation += htab->sgot->output_section->vma;
+ break;
+ }
+ /* Fall through. */
+
case R_390_GOT12:
case R_390_GOT16:
case R_390_GOT32:
* between the start of the GOT and the symbols entry. We
* add the vma of the GOT to get the correct value.
*/
- if (r_type == R_390_GOTENT)
+ if ( r_type == R_390_GOTENT
+ || r_type == R_390_GOTPLTENT)
relocation += htab->sgot->output_section->vma;
break;
- case R_390_GOTOFF:
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
/* Relocation is relative to the start of the global offset
table. */
unresolved_reloc = FALSE;
break;
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table relative to the start of the GOT. */
+
+ /* For local symbols or if we didn't make a PLT entry for
+ this symbol resolve the symbol directly. */
+ if ( h == NULL
+ || h->plt.offset == (bfd_vma) -1
+ || htab->splt == NULL)
+ {
+ relocation -= htab->sgot->output_section->vma;
+ break;
+ }
+
+ relocation = (htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + h->plt.offset
+ - htab->sgot->output_section->vma);
+ unresolved_reloc = FALSE;
+ break;
+
case R_390_8:
case R_390_16:
case R_390_32:
static bfd_boolean elf_s390_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
+struct elf_s390_link_hash_entry;
+static void elf_s390_adjust_gotplt
+ PARAMS ((struct elf_s390_link_hash_entry *));
static bfd_boolean elf_s390_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static bfd_boolean allocate_dynrelocs
PARAMS ((const Elf_Internal_Rela *));
static bfd_boolean elf_s390_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean elf_s390_object_p PARAMS ((bfd *));
+static bfd_boolean elf_s390_object_p
+ PARAMS ((bfd *));
#include "elf/s390.h"
0, /* dst_mask */
FALSE), /* pcrel_offset */
- HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
- HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
- HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_dont, bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
- HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GLOB_DAT",FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_JMP_SLOT",FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_RELATIVE",FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GOTOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTOFF", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
+ HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
+ HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
+ HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
+ bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
+ HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
+ HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
+ HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
+ HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
+ HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
};
/* GNU extension to record C++ vtable hierarchy. */
case BFD_RELOC_390_RELATIVE:
return &elf_howto_table[(int) R_390_RELATIVE];
case BFD_RELOC_32_GOTOFF:
- return &elf_howto_table[(int) R_390_GOTOFF];
+ return &elf_howto_table[(int) R_390_GOTOFF32];
case BFD_RELOC_390_GOTPC:
return &elf_howto_table[(int) R_390_GOTPC];
case BFD_RELOC_390_GOT16:
return &elf_howto_table[(int) R_390_PC16DBL];
case BFD_RELOC_390_PLT16DBL:
return &elf_howto_table[(int) R_390_PLT16DBL];
- case BFD_RELOC_VTABLE_INHERIT:
- return &elf64_s390_vtinherit_howto;
- case BFD_RELOC_VTABLE_ENTRY:
- return &elf64_s390_vtentry_howto;
case BFD_RELOC_390_PC32DBL:
return &elf_howto_table[(int) R_390_PC32DBL];
case BFD_RELOC_390_PLT32DBL:
return &elf_howto_table[(int) R_390_PLT64];
case BFD_RELOC_390_GOTENT:
return &elf_howto_table[(int) R_390_GOTENT];
+ case BFD_RELOC_16_GOTOFF:
+ return &elf_howto_table[(int) R_390_GOTOFF16];
+ case BFD_RELOC_390_GOTOFF64:
+ return &elf_howto_table[(int) R_390_GOTOFF64];
+ case BFD_RELOC_390_GOTPLT12:
+ return &elf_howto_table[(int) R_390_GOTPLT12];
+ case BFD_RELOC_390_GOTPLT16:
+ return &elf_howto_table[(int) R_390_GOTPLT16];
+ case BFD_RELOC_390_GOTPLT32:
+ return &elf_howto_table[(int) R_390_GOTPLT32];
+ case BFD_RELOC_390_GOTPLT64:
+ return &elf_howto_table[(int) R_390_GOTPLT64];
+ case BFD_RELOC_390_GOTPLTENT:
+ return &elf_howto_table[(int) R_390_GOTPLTENT];
+ case BFD_RELOC_390_PLTOFF16:
+ return &elf_howto_table[(int) R_390_PLTOFF16];
+ case BFD_RELOC_390_PLTOFF32:
+ return &elf_howto_table[(int) R_390_PLTOFF32];
+ case BFD_RELOC_390_PLTOFF64:
+ return &elf_howto_table[(int) R_390_PLTOFF64];
+ case BFD_RELOC_VTABLE_INHERIT:
+ return &elf64_s390_vtinherit_howto;
+ case BFD_RELOC_VTABLE_ENTRY:
+ return &elf64_s390_vtentry_howto;
default:
break;
}
/* Track dynamic relocs copied for this symbol. */
struct elf_s390_dyn_relocs *dyn_relocs;
+
+ /* Number of GOTPLT references for a function. */
+ bfd_signed_vma gotplt_refcount;
};
/* s390 ELF linker hash table. */
eh = (struct elf_s390_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
+ eh->gotplt_refcount = 0;
}
return entry;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
+ bfd_signed_vma *local_got_refcounts;
if (info->relocateable)
return TRUE;
htab = elf_s390_hash_table (info);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
sreloc = NULL;
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ /* Create got section and local_got_refcounts array if they
+ are needed. */
switch (ELF64_R_TYPE (rel->r_info))
{
case R_390_GOT12:
case R_390_GOT32:
case R_390_GOT64:
case R_390_GOTENT:
- /* This symbol requires a global offset table entry. */
- if (h != NULL)
- {
- h->got.refcount += 1;
- }
- else
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ if (h == NULL
+ && local_got_refcounts == NULL)
{
- bfd_signed_vma *local_got_refcounts;
+ bfd_size_type size;
- /* This is a global offset table entry for a local symbol. */
- local_got_refcounts = elf_local_got_refcounts (abfd);
+ size = symtab_hdr->sh_info;
+ size *= sizeof (bfd_signed_vma);
+ local_got_refcounts = ((bfd_signed_vma *)
+ bfd_zalloc (abfd, size));
if (local_got_refcounts == NULL)
- {
- bfd_size_type size;
-
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts = ((bfd_signed_vma *)
- bfd_zalloc (abfd, size));
- if (local_got_refcounts == NULL)
- return FALSE;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- }
- local_got_refcounts[r_symndx] += 1;
+ return FALSE;
+ elf_local_got_refcounts (abfd) = local_got_refcounts;
}
- /* Fall through */
-
- case R_390_GOTOFF:
+ /* Fall through. */
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
case R_390_GOTPC:
case R_390_GOTPCDBL:
if (htab->sgot == NULL)
if (!create_got_section (htab->elf.dynobj, info))
return FALSE;
}
+ }
+
+ switch (ELF64_R_TYPE (rel->r_info))
+ {
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT32:
+ case R_390_GOT64:
+ case R_390_GOTENT:
+ /* This symbol requires a global offset table entry. */
+ if (h != NULL)
+ {
+ h->got.refcount += 1;
+ }
+ else
+ {
+ local_got_refcounts[r_symndx] += 1;
+ }
+ /* Fall through */
+
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ /* Got is created, nothing to be done. */
break;
case R_390_PLT16DBL:
case R_390_PLT32:
case R_390_PLT32DBL:
case R_390_PLT64:
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ case R_390_PLTOFF64:
/* 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
/* If this is a local symbol, we resolve it directly without
creating a procedure linkage table entry. */
- if (h == NULL)
- continue;
+ if (h != NULL)
+ {
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->plt.refcount += 1;
+ }
+ break;
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- h->plt.refcount += 1;
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ /* This symbol requires either a procedure linkage table entry
+ or an entry in the local got. We actually build the entry
+ in adjust_dynamic_symbol because whether this is really a
+ global reference can change and with it the fact if we have
+ to create a plt entry or a local got entry. To be able to
+ make a once global symbol a local one we have to keep track
+ of the number of gotplt references that exist for this
+ symbol. */
+ if (h != NULL)
+ {
+ ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->plt.refcount += 1;
+ }
+ else
+ {
+ local_got_refcounts[r_symndx] += 1;
+ }
break;
case R_390_8:
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
- switch (ELF64_R_TYPE (rel->r_info))
- {
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTOFF:
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- case R_390_GOTENT:
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->got.refcount > 0)
- h->got.refcount -= 1;
- }
- else if (local_got_refcounts != NULL)
- {
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx] -= 1;
- }
- break;
+ {
+ r_symndx = ELF64_R_SYM (rel->r_info);
+
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ switch (ELF64_R_TYPE (rel->r_info))
+ {
+ case R_390_GOT12:
+ case R_390_GOT16:
+ case R_390_GOT32:
+ case R_390_GOT64:
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
+ case R_390_GOTPC:
+ case R_390_GOTPCDBL:
+ case R_390_GOTENT:
+ if (h != NULL)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+ break;
+
+ case R_390_PLT16DBL:
+ case R_390_PLT32:
+ case R_390_PLT32DBL:
+ case R_390_PLT64:
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ case R_390_PLTOFF64:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
+ break;
- case R_390_8:
- case R_390_12:
- case R_390_16:
- case R_390_32:
- case R_390_64:
- case R_390_PC16:
- case R_390_PC16DBL:
- case R_390_PC32:
- case R_390_PC32DBL:
- case R_390_PC64:
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- struct elf_s390_link_hash_entry *eh;
- struct elf_s390_dyn_relocs **pp;
- struct elf_s390_dyn_relocs *p;
-
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-
- if (!info->shared && h->plt.refcount > 0)
- h->plt.refcount -= 1;
-
- eh = (struct elf_s390_link_hash_entry *) h;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- if (p->sec == sec)
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
{
- if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
- || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
- || ELF64_R_TYPE (rel->r_info) == R_390_PC32)
- p->pc_count -= 1;
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- break;
+ ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
+ h->plt.refcount -= 1;
}
- }
- break;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+ break;
- case R_390_PLT16DBL:
- case R_390_PLT32:
- case R_390_PLT32DBL:
- case R_390_PLT64:
- r_symndx = ELF64_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;
- }
- break;
+ case R_390_8:
+ case R_390_12:
+ case R_390_16:
+ case R_390_32:
+ case R_390_64:
+ case R_390_PC16:
+ case R_390_PC16DBL:
+ case R_390_PC32:
+ case R_390_PC32DBL:
+ case R_390_PC64:
+ if (h != NULL)
+ {
+ struct elf_s390_link_hash_entry *eh;
+ struct elf_s390_dyn_relocs **pp;
+ struct elf_s390_dyn_relocs *p;
+
+ if (!info->shared && h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+
+ eh = (struct elf_s390_link_hash_entry *) h;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC32
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
+ || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
+ p->pc_count -= 1;
+ p->count -= 1;
+ if (p->count == 0)
+ *pp = p->next;
+ break;
+ }
+ }
+ break;
- default:
- break;
- }
+ default:
+ break;
+ }
+ }
return TRUE;
}
+/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
+ entry but we found we will not create any. Called when we find we will
+ not have any PLT for this symbol, by for example
+ elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
+ or elf_s390_size_dynamic_sections if no dynamic sections will be
+ created (we're only linking static objects). */
+
+static void
+elf_s390_adjust_gotplt (h)
+ struct elf_s390_link_hash_entry *h;
+{
+ if (h->elf.root.type == bfd_link_hash_warning)
+ h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
+
+ if (h->gotplt_refcount <= 0)
+ return;
+
+ /* We simply add the number of gotplt references to the number
+ * of got references for this symbol. */
+ h->elf.got.refcount += h->gotplt_refcount;
+ h->gotplt_refcount = -1;
+}
+
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
linkage table, and we can just do a PC32 reloc instead. */
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
return TRUE;
return TRUE;
if (h->root.type == bfd_link_hash_warning)
+ /* When warning symbols are created, they **replace** the "real"
+ entry in the hash table, thus we never get to see the real
+ symbol in a hash traversal. So look at it now. */
h = (struct elf_link_hash_entry *) h->root.u.i.link;
info = (struct bfd_link_info *) inf;
{
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
}
else
{
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
}
if (h->got.refcount > 0)
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
- int r_type;
+ unsigned int r_type;
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
if (r_type == (int) R_390_GNU_VTINHERIT
|| r_type == (int) R_390_GNU_VTENTRY)
continue;
- if (r_type < 0 || r_type >= (int) R_390_max)
+ if (r_type >= (int) R_390_max)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
howto = elf_howto_table + r_type;
r_symndx = ELF64_R_SYM (rel->r_info);
+
+ /* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
switch (r_type)
{
+ case R_390_GOTPLT12:
+ case R_390_GOTPLT16:
+ case R_390_GOTPLT32:
+ case R_390_GOTPLT64:
+ case R_390_GOTPLTENT:
+ /* There are three cases for a GOTPLT relocation. 1) The
+ relocation is against the jump slot entry of a plt that
+ will get emitted to the output file. 2) The relocation
+ is against the jump slot of a plt entry that has been
+ removed. elf_s390_adjust_gotplt has created a GOT entry
+ as replacement. 3) The relocation is against a local symbol.
+ Cases 2) and 3) are the same as the GOT relocation code
+ so we just have to test for case 1 and fall through for
+ the other two. */
+ if (h != NULL && h->plt.offset != (bfd_vma) -1)
+ {
+ bfd_vma plt_index;
+
+ /* Calc. index no.
+ Current offset - size first entry / entry size. */
+ plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
+ PLT_ENTRY_SIZE;
+
+ /* Offset in GOT is PLT index plus GOT headers(3) times 4,
+ addr & GOT addr. */
+ relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
+ unresolved_reloc = FALSE;
+
+ if (r_type == R_390_GOTPLTENT)
+ relocation += htab->sgot->output_section->vma;
+ break;
+ }
+ /* Fall through. */
+
case R_390_GOT12:
case R_390_GOT16:
case R_390_GOT32:
* between the start of the GOT and the symbols entry. We
* add the vma of the GOT to get the correct value.
*/
- if (r_type == R_390_GOTENT)
+ if ( r_type == R_390_GOTENT
+ || r_type == R_390_GOTPLTENT)
relocation += htab->sgot->output_section->vma;
break;
- case R_390_GOTOFF:
+ case R_390_GOTOFF16:
+ case R_390_GOTOFF32:
+ case R_390_GOTOFF64:
/* Relocation is relative to the start of the global offset
table. */
permitted by the ABI, we might have to change this
calculation. */
relocation -= htab->sgot->output_section->vma;
-
break;
case R_390_GOTPC:
+ htab->splt->output_offset
+ h->plt.offset);
unresolved_reloc = FALSE;
+ break;
+
+ case R_390_PLTOFF16:
+ case R_390_PLTOFF32:
+ case R_390_PLTOFF64:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table relative to the start of the GOT. */
+
+ /* For local symbols or if we didn't make a PLT entry for
+ this symbol resolve the symbol directly. */
+ if ( h == NULL
+ || h->plt.offset == (bfd_vma) -1
+ || htab->splt == NULL)
+ {
+ relocation -= htab->sgot->output_section->vma;
+ break;
+ }
+
+ relocation = (htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + h->plt.offset
+ - htab->sgot->output_section->vma);
+ unresolved_reloc = FALSE;
break;
case R_390_8:
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