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[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c

diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 314b0703d94d09667416e128df512aa0f688bdec..9c4a9d4ec18a5ccaa0feef9f7a9814f4ece1e35c 100644 (file)
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -26,9 +26,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "elf/x86-64.h"
 
-/* We use only the RELA entries.  */
-#define USE_RELA 1
-
 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value.  */
 #define MINUS_ONE (~ (bfd_vma) 0)
 
@@ -137,12 +134,13 @@ static boolean create_got_section
 static boolean elf64_x86_64_create_dynamic_sections
   PARAMS((bfd *, struct bfd_link_info *));
 static void elf64_x86_64_copy_indirect_symbol
-  PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
+  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+          struct elf_link_hash_entry *));
 static boolean elf64_x86_64_check_relocs
   PARAMS ((bfd *, struct bfd_link_info *, asection *sec,
           const Elf_Internal_Rela *));
 static asection *elf64_x86_64_gc_mark_hook
-  PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
+  PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
           struct elf_link_hash_entry *, Elf_Internal_Sym *));
 
 static boolean elf64_x86_64_gc_sweep_hook
@@ -497,7 +495,8 @@ elf64_x86_64_create_dynamic_sections (dynobj, info)
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
-elf64_x86_64_copy_indirect_symbol (dir, ind)
+elf64_x86_64_copy_indirect_symbol (bed, dir, ind)
+     struct elf_backend_data *bed;
      struct elf_link_hash_entry *dir, *ind;
 {
   struct elf64_x86_64_link_hash_entry *edir, *eind;
@@ -539,7 +538,7 @@ elf64_x86_64_copy_indirect_symbol (dir, ind)
       eind->dyn_relocs = NULL;
     }
 
-  _bfd_elf_link_hash_copy_indirect (dir, ind);
+  _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
 }
 
 static boolean
@@ -856,8 +855,8 @@ elf64_x86_64_check_relocs (abfd, info, sec, relocs)
    relocation. */
 
 static asection *
-elf64_x86_64_gc_mark_hook (abfd, info, rel, h, sym)
-     bfd *abfd;
+elf64_x86_64_gc_mark_hook (sec, info, rel, h, sym)
+     asection *sec;
      struct bfd_link_info *info ATTRIBUTE_UNUSED;
      Elf_Internal_Rela *rel;
      struct elf_link_hash_entry *h;
@@ -887,9 +886,7 @@ elf64_x86_64_gc_mark_hook (abfd, info, rel, h, sym)
        }
     }
   else
-    {
-      return bfd_section_from_elf_index (abfd, sym->st_shndx);
-    }
+    return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
 
   return NULL;
 }
@@ -1878,9 +1875,44 @@ elf64_x86_64_relocate_section (output_bfd, info, input_bfd, input_section,
              else
                {
                  /* This symbol is local, or marked to become local.  */
-                 relocate = true;
-                 outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
-                 outrel.r_addend = relocation + rel->r_addend;
+                 if (r_type == R_X86_64_64)
+                   {
+                     relocate = true;
+                     outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
+                     outrel.r_addend = relocation + rel->r_addend;
+                   }
+                 else
+                   {
+                     long sindx;
+
+                     if (h == NULL)
+                       sec = local_sections[r_symndx];
+                     else
+                       {
+                         BFD_ASSERT (h->root.type == bfd_link_hash_defined
+                                     || (h->root.type
+                                         == bfd_link_hash_defweak));
+                         sec = h->root.u.def.section;
+                       }
+                     if (sec != NULL && 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);
+                       }
+
+                     outrel.r_info = ELF64_R_INFO (sindx, r_type);
+                     outrel.r_addend = relocation + rel->r_addend;
+                   }
                }
 
              sreloc = elf_section_data (input_section)->sreloc;
@@ -1905,14 +1937,11 @@ elf64_x86_64_relocate_section (output_bfd, info, input_bfd, input_section,
          break;
        }
 
-      /* FIXME: Why do we allow debugging sections to escape this error?
-        More importantly, why do we not emit dynamic relocs for
-        R_386_32 above in debugging sections (which are ! SEC_ALLOC)?
-        If we had emitted the dynamic reloc, we could remove the
-        fudge here.  */
+      /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
+        because such sections are not SEC_ALLOC and thus ld.so will
+        not process them.  */
       if (unresolved_reloc
-         && !(info->shared
-              && (input_section->flags & SEC_DEBUGGING) != 0
+         && !((input_section->flags & SEC_DEBUGGING) != 0
               && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
        (*_bfd_error_handler)
          (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),