Add m68k-uclinux target
[deliverable/binutils-gdb.git] / bfd / elf32-s390.c
index 55690bd06ce3084e128c05cb176b9743413dde88..07ba23cc32ad30e6346dcbb375f4f601d057a28b 100644 (file)
@@ -40,7 +40,7 @@ static bfd_boolean create_got_section
 static bfd_boolean elf_s390_create_dynamic_sections
   PARAMS((bfd *, struct bfd_link_info *));
 static void elf_s390_copy_indirect_symbol
-  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+  PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
           struct elf_link_hash_entry *));
 static bfd_boolean elf_s390_check_relocs
   PARAMS ((bfd *, struct bfd_link_info *, asection *,
@@ -121,7 +121,7 @@ static reloc_howto_type elf_howto_table[] =
        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,
+  HOWTO(R_390_GOT12,    0, 1, 12, FALSE, 0, complain_overflow_bitfield,
        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),
@@ -484,7 +484,7 @@ elf_s390_is_local_label_name (abfd, name)
    Word 1 is a pointer to a structure describing the object
    Word 2 is used to point to the loader entry address.
 
-   The code for position independand PLT entries looks like this:
+   The code for position independent PLT entries looks like this:
 
    r12 holds addr of the current GOT at entry to the PLT
 
@@ -685,14 +685,6 @@ static bfd_boolean
 elf_s390_object_p (abfd)
      bfd *abfd;
 {
-  /* Allocate our special target data.  */
-  struct elf_s390_obj_tdata *new_tdata;
-  bfd_size_type amt = sizeof (struct elf_s390_obj_tdata);
-  new_tdata = bfd_zalloc (abfd, amt);
-  if (new_tdata == NULL)
-    return FALSE;
-  new_tdata->root = *abfd->tdata.elf_obj_data;
-  abfd->tdata.any = new_tdata;
   /* Set the right machine number for an s390 elf32 file.  */
   return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_31);
 }
@@ -856,7 +848,7 @@ elf_s390_create_dynamic_sections (dynobj, info)
 
 static void
 elf_s390_copy_indirect_symbol (bed, dir, ind)
-     struct elf_backend_data *bed;
+     const struct elf_backend_data *bed;
      struct elf_link_hash_entry *dir, *ind;
 {
   struct elf_s390_link_hash_entry *edir, *eind;
@@ -914,7 +906,8 @@ elf_s390_copy_indirect_symbol (bed, dir, ind)
     dir->elf_link_hash_flags |=
       (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
                                   | ELF_LINK_HASH_REF_REGULAR
-                                  | ELF_LINK_HASH_REF_REGULAR_NONWEAK));
+                                  | ELF_LINK_HASH_REF_REGULAR_NONWEAK
+                                  | ELF_LINK_HASH_NEEDS_PLT));
   else
     _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
 }
@@ -2216,10 +2209,10 @@ static bfd_vma
 dtpoff_base (info)
      struct bfd_link_info *info;
 {
-  /* If tls_segment is NULL, we should have signalled an error already.  */
-  if (elf_hash_table (info)->tls_segment == NULL)
+  /* If tls_sec is NULL, we should have signalled an error already.  */
+  if (elf_hash_table (info)->tls_sec == NULL)
     return 0;
-  return elf_hash_table (info)->tls_segment->start;
+  return elf_hash_table (info)->tls_sec->vma;
 }
 
 /* Return the relocation value for @tpoff relocation
@@ -2230,14 +2223,12 @@ tpoff (info, address)
      struct bfd_link_info *info;
      bfd_vma address;
 {
-  struct elf_link_tls_segment *tls_segment
-    = elf_hash_table (info)->tls_segment;
+  struct elf_link_hash_table *htab = elf_hash_table (info);
 
-  /* If tls_segment is NULL, we should have signalled an error already.  */
-  if (tls_segment == NULL)
+  /* If tls_sec is NULL, we should have signalled an error already.  */
+  if (htab->tls_sec == NULL)
     return 0;
-  return (align_power (tls_segment->size, tls_segment->align)
-         + tls_segment->start - address);
+  return htab->tls_size + htab->tls_sec->vma - address;
 }
 
 /* Complain if TLS instruction relocation is against an invalid
@@ -2327,49 +2318,16 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
        {
          sym = local_syms + r_symndx;
          sec = local_sections[r_symndx];
-         relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
+         relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
        }
       else
        {
-         h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-         while (h->root.type == bfd_link_hash_indirect
-                || h->root.type == bfd_link_hash_warning)
-           h = (struct elf_link_hash_entry *) h->root.u.i.link;
+         bfd_boolean warned ATTRIBUTE_UNUSED;
 
-         if (h->root.type == bfd_link_hash_defined
-             || h->root.type == bfd_link_hash_defweak)
-           {
-             sec = h->root.u.def.section;
-             if (sec->output_section == NULL)
-               {
-                 /* Set a flag that will be cleared later if we find a
-                    relocation value for this symbol.  output_section
-                    is typically NULL for symbols satisfied by a shared
-                    library.  */
-                 unresolved_reloc = TRUE;
-                 relocation = 0;
-               }
-             else
-               relocation = (h->root.u.def.value
-                             + sec->output_section->vma
-                             + sec->output_offset);
-           }
-         else if (h->root.type == bfd_link_hash_undefweak)
-           relocation = 0;
-         else if (info->shared
-                  && !info->no_undefined
-                  && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
-           relocation = 0;
-         else
-           {
-             if (! ((*info->callbacks->undefined_symbol)
-                    (info, h->root.root.string, input_bfd,
-                     input_section, rel->r_offset,
-                     (!info->shared || info->no_undefined
-                      || ELF_ST_VISIBILITY (h->other)))))
-               return FALSE;
-             relocation = 0;
-           }
+         RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
+                                  symtab_hdr, relocation, sec,
+                                  unresolved_reloc, info,
+                                  warned);
        }
 
       switch (r_type)
@@ -2661,9 +2619,41 @@ elf_s390_relocate_section (output_bfd, info, input_bfd, input_section,
              else
                {
                  /* This symbol is local, or marked to become local.  */
-                 relocate = TRUE;
-                 outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
                  outrel.r_addend = relocation + rel->r_addend;
+                 if (r_type == R_390_32)
+                   {
+                     relocate = TRUE;
+                     outrel.r_info = ELF32_R_INFO (0, R_390_RELATIVE);
+                   }
+                 else
+                   {
+                     long sindx;
+
+                     if (bfd_is_abs_section (sec))
+                       sindx = 0;
+                     else if (sec == NULL || sec->owner == NULL)
+                       {
+                         bfd_set_error(bfd_error_bad_value);
+                         return FALSE;
+                       }
+                     else
+                       {
+                         asection *osec;
+
+                         osec = sec->output_section;
+                         sindx = elf_section_data (osec)->dynindx;
+                         BFD_ASSERT (sindx > 0);
+
+                         /* We are turning this relocation into one
+                            against a section symbol, so subtract out
+                            the output section's address but not the
+                            offset of the input section in the output
+                            section.  */
+
+                         outrel.r_addend -= osec->vma;
+                       }
+                     outrel.r_info = ELF32_R_INFO (sindx, r_type);
+                   }
                }
 
              sreloc = elf_section_data (input_section)->sreloc;
@@ -3496,7 +3486,6 @@ elf_s390_grok_prstatus (abfd, note)
 #define elf_backend_plt_readonly       1
 #define elf_backend_want_plt_sym       0
 #define elf_backend_got_header_size    12
-#define elf_backend_plt_header_size    PLT_ENTRY_SIZE
 #define elf_backend_rela_normal                1
 
 #define elf_info_to_howto                    elf_s390_info_to_howto
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