include/elf/ChangeLog:

Introduce TLS descriptors for i386 and x86_64.
* common.h (DT_TLSDESC_GOT, DT_TLSDESC_PLT): New.
* i386.h (R_386_TLS_GOTDESC, R_386_TLS_DESC_CALL, R_386_TLS_DESC):
New.
* x86-64.h (R_X86_64_GOTPC32_TLSDESC, R_X86_64_TLSDESC_CALL,
R_X86_64_TLSDESC): New.
bfd/ChangeLog:
Introduce TLS descriptors for i386 and x86_64.
* reloc.c (BFD_RELOC_386_TLS_GOTDESC, BFD_RELOC_386_TLS_DESC,
BFD_RELOC_386_TLS_DESC_CALL, BFD_RELOC_X86_64_GOTPC32_TLSDESC,
BFD_RELOC_X86_64_TLSDESC, BFD_RELOC_X86_64_TLSDESC_CALL): New.
* libbfd.h, bfd-in2.h: Rebuilt.
* elf32-i386.c (elf_howto_table): New relocations.
(R_386_tls): Adjust.
(elf_i386_reloc_type_lookup): Map new relocations.
(GOT_TLS_GDESC, GOT_TLS_GD_BOTH_P): New macros.
(GOT_TLS_GD_P, GOT_TLS_GDESC_P, GOT_TLS_GD_ANY_P): New macros.
(struct elf_i386_link_hash_entry): Add tlsdesc_got field.
(struct elf_i386_obj_tdata): Add local_tlsdesc_gotent field.
(elf_i386_local_tlsdesc_gotent): New macro.
(struct elf_i386_link_hash_table): Add sgotplt_jump_table_size.
(elf_i386_compute_jump_table_size): New macro.
(link_hash_newfunc): Initialize tlsdesc_got.
(elf_i386_link_hash_table_create): Set sgotplt_jump_table_size.
(elf_i386_tls_transition): Handle R_386_TLS_GOTDESC and
R_386_TLS_DESC_CALL.
(elf_i386_check_relocs): Likewise.  Allocate space for
local_tlsdesc_gotent.
(elf_i386_gc_sweep_hook): Handle R_386_TLS_GOTDESC and
R_386_TLS_DESC_CALL.
(allocate_dynrelocs): Count function PLT relocations.  Reserve
space for TLS descriptors and relocations.
(elf_i386_size_dynamic_sections): Reserve space for TLS
descriptors and relocations.  Set up sgotplt_jump_table_size.
Don't zero reloc_count in srelplt.
(elf_i386_always_size_sections): New.  Set up _TLS_MODULE_BASE_.
(elf_i386_relocate_section): Handle R_386_TLS_GOTDESC and
R_386_TLS_DESC_CALL.
(elf_i386_finish_dynamic_symbol): Use GOT_TLS_GD_ANY_P.
(elf_backend_always_size_sections): Define.
* elf64-x86-64.c (x86_64_elf_howto): Add R_X86_64_GOTPC32_TLSDESC,
R_X86_64_TLSDESC, R_X86_64_TLSDESC_CALL.
(R_X86_64_standard): Adjust.
(x86_64_reloc_map): Map new relocs.
(elf64_x86_64_rtype_to_howto): New, split out of...
(elf64_x86_64_info_to_howto): ... this function, and...
(elf64_x86_64_reloc_type_lookup): ... use it to map elf_reloc_val.
(GOT_TLS_GDESC, GOT_TLS_GD_BOTH_P): New macros.
(GOT_TLS_GD_P, GOT_TLS_GDESC_P, GOT_TLS_GD_ANY_P): New macros.
(struct elf64_x86_64_link_hash_entry): Add tlsdesc_got field.
(struct elf64_x86_64_obj_tdata): Add local_tlsdesc_gotent field.
(elf64_x86_64_local_tlsdesc_gotent): New macro.
(struct elf64_x86_64_link_hash_table): Add tlsdesc_plt,
tlsdesc_got and sgotplt_jump_table_size fields.
(elf64_x86_64_compute_jump_table_size): New macro.
(link_hash_newfunc): Initialize tlsdesc_got.
(elf64_x86_64_link_hash_table_create): Initialize new fields.
(elf64_x86_64_tls_transition): Handle R_X86_64_GOTPC32_TLSDESC and
R_X86_64_TLSDESC_CALL.
(elf64_x86_64_check_relocs): Likewise.  Allocate space for
local_tlsdesc_gotent.
(elf64_x86_64_gc_sweep_hook): Handle R_X86_64_GOTPC32_TLSDESC and
R_X86_64_TLSDESC_CALL.
(allocate_dynrelocs): Count function PLT relocations.  Reserve
space for TLS descriptors and relocations.
(elf64_x86_64_size_dynamic_sections): Reserve space for TLS
descriptors and relocations.  Set up sgotplt_jump_table_size,
tlsdesc_plt and tlsdesc_got.  Make room for them.  Don't zero
reloc_count in srelplt.  Add dynamic entries for DT_TLSDESC_PLT
and DT_TLSDESC_GOT.
(elf64_x86_64_always_size_sections): New.  Set up
_TLS_MODULE_BASE_.
(elf64_x86_64_relocate_section): Handle R_386_TLS_GOTDESC and
R_386_TLS_DESC_CALL.
(elf64_x86_64_finish_dynamic_symbol): Use GOT_TLS_GD_ANY_P.
(elf64_x86_64_finish_dynamic_sections): Set DT_TLSDESC_PLT and
DT_TLSDESC_GOT.  Set up TLS descriptor lazy resolver PLT entry.
(elf_backend_always_size_sections): Define.
binutils/ChangeLog:
Introduce TLS descriptors for i386 and x86_64.
* readelf.c (get_dynamic_type): Handle DT_TLSDESC_GOT and
DT_TLSDESC_PLT.
gas/ChangeLog:
Introduce TLS descriptors for i386 and x86_64.
* config/tc-i386.c (tc_i386_fix_adjustable): Handle
BFD_RELOC_386_TLS_GOTDESC, BFD_RELOC_386_TLS_DESC_CALL,
BFD_RELOC_X86_64_GOTPC32_TLSDESC, BFD_RELOC_X86_64_TLSDESC_CALL.
(optimize_disp): Emit fix up for BFD_RELOC_386_TLS_DESC_CALL and
BFD_RELOC_X86_64_TLSDESC_CALL immediately, and clear the
displacement bits.
(build_modrm_byte): Set up zero modrm for TLS desc calls.
(lex_got): Handle @tlsdesc and @tlscall.
(md_apply_fix, tc_gen_reloc): Handle the new relocations.
ld/testsuite/ChangeLog:
Introduce TLS descriptors for i386 and x86_64.
* ld-i386/i386.exp: Run on x86_64-*-linux* and amd64-*-linux*.
Add new tests.
* ld-i386/pcrel16.d: Add -melf_i386.
* ld-i386/pcrel8.d: Likewise.
* ld-i386/tlsbindesc.dd: New.
* ld-i386/tlsbindesc.rd: New.
* ld-i386/tlsbindesc.s: New.
* ld-i386/tlsbindesc.sd: New.
* ld-i386/tlsbindesc.td: New.
* ld-i386/tlsdesc.dd: New.
* ld-i386/tlsdesc.rd: New.
* ld-i386/tlsdesc.s: New.
* ld-i386/tlsdesc.sd: New.
* ld-i386/tlsdesc.td: New.
* ld-i386/tlsgdesc.dd: New.
* ld-i386/tlsgdesc.rd: New.
* ld-i386/tlsgdesc.s: New.
* ld-x86-64/x86-64.exp: Run new tests.
* ld-x86-64/tlsbindesc.dd: New.
* ld-x86-64/tlsbindesc.rd: New.
* ld-x86-64/tlsbindesc.s: New.
* ld-x86-64/tlsbindesc.sd: New.
* ld-x86-64/tlsbindesc.td: New.
* ld-x86-64/tlsdesc.dd: New.
* ld-x86-64/tlsdesc.pd: New.
* ld-x86-64/tlsdesc.rd: New.
* ld-x86-64/tlsdesc.s: New.
* ld-x86-64/tlsdesc.sd: New.
* ld-x86-64/tlsdesc.td: New.
* ld-x86-64/tlsgdesc.dd: New.
* ld-x86-64/tlsgdesc.rd: New.
* ld-x86-64/tlsgdesc.s: New.

1 files changed, 483 insertions, 57 deletions

diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 54914ba..5433771 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -1,5 +1,5 @@
 /* X86-64 specific support for 64-bit ELF
-   Copyright 2000, 2001, 2002, 2003, 2004, 2005
+   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006
    Free Software Foundation, Inc.
    Contributed by Jan Hubicka <jh@suse.cz>.
 
@@ -112,12 +112,31 @@ static reloc_howto_type x86_64_elf_howto_table[] =
   HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
 	bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
 	FALSE, 0xffffffff, 0xffffffff, TRUE),
+  EMPTY_HOWTO (27),
+  EMPTY_HOWTO (28),
+  EMPTY_HOWTO (29),
+  EMPTY_HOWTO (30),
+  EMPTY_HOWTO (31),
+  EMPTY_HOWTO (32),
+  EMPTY_HOWTO (33),
+  HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
+	complain_overflow_bitfield, bfd_elf_generic_reloc,
+	"R_X86_64_GOTPC32_TLSDESC",
+	FALSE, 0xffffffff, 0xffffffff, TRUE),
+  HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
+	complain_overflow_dont, bfd_elf_generic_reloc,
+	"R_X86_64_TLSDESC_CALL",
+	FALSE, 0, 0, FALSE),
+  HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
+	complain_overflow_bitfield, bfd_elf_generic_reloc,
+	"R_X86_64_TLSDESC",
+	FALSE, MINUS_ONE, MINUS_ONE, FALSE),
 
   /* We have a gap in the reloc numbers here.
      R_X86_64_standard counts the number up to this point, and
      R_X86_64_vt_offset is the value to subtract from a reloc type of
      R_X86_64_GNU_VT* to form an index into this table.  */
-#define R_X86_64_standard (R_X86_64_GOTPC32 + 1)
+#define R_X86_64_standard (R_X86_64_TLSDESC + 1)
 #define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
 
 /* GNU extension to record C++ vtable hierarchy.  */
@@ -166,14 +185,38 @@ static const struct elf_reloc_map x86_64_reloc_map[] =
   { BFD_RELOC_64_PCREL,		R_X86_64_PC64, },
   { BFD_RELOC_X86_64_GOTOFF64,	R_X86_64_GOTOFF64, },
   { BFD_RELOC_X86_64_GOTPC32,	R_X86_64_GOTPC32, },
+  { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
+  { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
+  { BFD_RELOC_X86_64_TLSDESC,	R_X86_64_TLSDESC, },
   { BFD_RELOC_VTABLE_INHERIT,	R_X86_64_GNU_VTINHERIT, },
   { BFD_RELOC_VTABLE_ENTRY,	R_X86_64_GNU_VTENTRY, },
 };
 
+static reloc_howto_type *
+elf64_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
+{
+  unsigned i;
+
+  if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
+      || r_type >= (unsigned int) R_X86_64_max)
+    {
+      if (r_type >= (unsigned int) R_X86_64_standard)
+	{
+	  (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
+				 abfd, (int) r_type);
+	  r_type = R_X86_64_NONE;
+	}
+      i = r_type;
+    }
+  else
+    i = r_type - (unsigned int) R_X86_64_vt_offset;
+  BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
+  return &x86_64_elf_howto_table[i];
+}
 
 /* Given a BFD reloc type, return a HOWTO structure.  */
 static reloc_howto_type *
-elf64_x86_64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+elf64_x86_64_reloc_type_lookup (bfd *abfd,
 				bfd_reloc_code_real_type code)
 {
   unsigned int i;
@@ -182,7 +225,8 @@ elf64_x86_64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
        i++)
     {
       if (x86_64_reloc_map[i].bfd_reloc_val == code)
-	return &x86_64_elf_howto_table[i];
+	return elf64_x86_64_rtype_to_howto (abfd,
+					    x86_64_reloc_map[i].elf_reloc_val);
     }
   return 0;
 }
@@ -193,23 +237,10 @@ static void
 elf64_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
 			    Elf_Internal_Rela *dst)
 {
-  unsigned r_type, i;
+  unsigned r_type;
 
   r_type = ELF64_R_TYPE (dst->r_info);
-  if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
-      || r_type >= (unsigned int) R_X86_64_max)
-    {
-      if (r_type >= (unsigned int) R_X86_64_standard)
-	{
-	  (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
-				 abfd, (int) r_type);
-	  r_type = R_X86_64_NONE;
-	}
-      i = r_type;
-    }
-  else
-    i = r_type - (unsigned int) R_X86_64_vt_offset;
-  cache_ptr->howto = &x86_64_elf_howto_table[i];
+  cache_ptr->howto = elf64_x86_64_rtype_to_howto (abfd, r_type);
   BFD_ASSERT (r_type == cache_ptr->howto->type);
 }
 
@@ -353,7 +384,20 @@ struct elf64_x86_64_link_hash_entry
 #define GOT_NORMAL	1
 #define GOT_TLS_GD	2
 #define GOT_TLS_IE	3
+#define GOT_TLS_GDESC	4
+#define GOT_TLS_GD_BOTH_P(type) \
+  ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
+#define GOT_TLS_GD_P(type) \
+  ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
+#define GOT_TLS_GDESC_P(type) \
+  ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
+#define GOT_TLS_GD_ANY_P(type) \
+  (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
   unsigned char tls_type;
+
+  /* Offset of the GOTPLT entry reserved for the TLS descriptor,
+     starting at the end of the jump table.  */
+  bfd_vma tlsdesc_got;
 };
 
 #define elf64_x86_64_hash_entry(ent) \
@@ -365,6 +409,9 @@ struct elf64_x86_64_obj_tdata
 
   /* tls_type for each local got entry.  */
   char *local_got_tls_type;
+
+  /* GOTPLT entries for TLS descriptors.  */
+  bfd_vma *local_tlsdesc_gotent;
 };
 
 #define elf64_x86_64_tdata(abfd) \
@@ -373,6 +420,8 @@ struct elf64_x86_64_obj_tdata
 #define elf64_x86_64_local_got_tls_type(abfd) \
   (elf64_x86_64_tdata (abfd)->local_got_tls_type)
 
+#define elf64_x86_64_local_tlsdesc_gotent(abfd) \
+  (elf64_x86_64_tdata (abfd)->local_tlsdesc_gotent)
 
 /* x86-64 ELF linker hash table.  */
 
@@ -389,11 +438,23 @@ struct elf64_x86_64_link_hash_table
   asection *sdynbss;
   asection *srelbss;
 
+  /* The offset into splt of the PLT entry for the TLS descriptor
+     resolver.  Special values are 0, if not necessary (or not found
+     to be necessary yet), and -1 if needed but not determined
+     yet.  */
+  bfd_vma tlsdesc_plt;
+  /* The offset into sgot of the GOT entry used by the PLT entry
+     above.  */
+  bfd_vma tlsdesc_got;
+
   union {
     bfd_signed_vma refcount;
     bfd_vma offset;
   } tls_ld_got;
 
+  /* The amount of space used by the jump slots in the GOT.  */
+  bfd_vma sgotplt_jump_table_size;
+
   /* Small local sym to section mapping cache.  */
   struct sym_sec_cache sym_sec;
 };
@@ -403,6 +464,9 @@ struct elf64_x86_64_link_hash_table
 #define elf64_x86_64_hash_table(p) \
   ((struct elf64_x86_64_link_hash_table *) ((p)->hash))
 
+#define elf64_x86_64_compute_jump_table_size(htab) \
+  ((htab)->srelplt->reloc_count * GOT_ENTRY_SIZE)
+
 /* Create an entry in an x86-64 ELF linker hash table.	*/
 
 static struct bfd_hash_entry *
@@ -428,6 +492,7 @@ link_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table,
       eh = (struct elf64_x86_64_link_hash_entry *) entry;
       eh->dyn_relocs = NULL;
       eh->tls_type = GOT_UNKNOWN;
+      eh->tlsdesc_got = (bfd_vma) -1;
     }
 
   return entry;
@@ -459,7 +524,10 @@ elf64_x86_64_link_hash_table_create (bfd *abfd)
   ret->sdynbss = NULL;
   ret->srelbss = NULL;
   ret->sym_sec.abfd = NULL;
+  ret->tlsdesc_plt = 0;
+  ret->tlsdesc_got = 0;
   ret->tls_ld_got.refcount = 0;
+  ret->sgotplt_jump_table_size = 0;
 
   return &ret->elf.root;
 }
@@ -616,6 +684,8 @@ elf64_x86_64_tls_transition (struct bfd_link_info *info, int r_type, int is_loca
   switch (r_type)
     {
     case R_X86_64_TLSGD:
+    case R_X86_64_GOTPC32_TLSDESC:
+    case R_X86_64_TLSDESC_CALL:
     case R_X86_64_GOTTPOFF:
       if (is_local)
 	return R_X86_64_TPOFF32;
@@ -706,6 +776,8 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
 	case R_X86_64_GOT32:
 	case R_X86_64_GOTPCREL:
 	case R_X86_64_TLSGD:
+	case R_X86_64_GOTPC32_TLSDESC:
+	case R_X86_64_TLSDESC_CALL:
 	  /* This symbol requires a global offset table entry.	*/
 	  {
 	    int tls_type, old_tls_type;
@@ -715,6 +787,9 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
 	      default: tls_type = GOT_NORMAL; break;
 	      case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
 	      case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
+	      case R_X86_64_GOTPC32_TLSDESC:
+	      case R_X86_64_TLSDESC_CALL:
+		tls_type = GOT_TLS_GDESC; break;
 	      }
 
 	    if (h != NULL)
@@ -733,14 +808,17 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
 		    bfd_size_type size;
 
 		    size = symtab_hdr->sh_info;
-		    size *= sizeof (bfd_signed_vma) + sizeof (char);
+		    size *= sizeof (bfd_signed_vma)
+		      + sizeof (bfd_vma) + sizeof (char);
 		    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;
+		    elf64_x86_64_local_tlsdesc_gotent (abfd)
+		      = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
 		    elf64_x86_64_local_got_tls_type (abfd)
-		      = (char *) (local_got_refcounts + symtab_hdr->sh_info);
+		      = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
 		  }
 		local_got_refcounts[r_symndx] += 1;
 		old_tls_type
@@ -750,10 +828,14 @@ elf64_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
 	    /* If a TLS symbol is accessed using IE at least once,
 	       there is no point to use dynamic model for it.  */
 	    if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
-		&& (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
+		&& (! GOT_TLS_GD_ANY_P (old_tls_type)
+		    || tls_type != GOT_TLS_IE))
 	      {
-		if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
+		if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
 		  tls_type = old_tls_type;
+		else if (GOT_TLS_GD_ANY_P (old_tls_type)
+			 && GOT_TLS_GD_ANY_P (tls_type))
+		  tls_type |= old_tls_type;
 		else
 		  {
 		    (*_bfd_error_handler)
@@ -1101,6 +1183,8 @@ elf64_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
 	  break;
 
 	case R_X86_64_TLSGD:
+	case R_X86_64_GOTPC32_TLSDESC:
+	case R_X86_64_TLSDESC_CALL:
 	case R_X86_64_GOTTPOFF:
 	case R_X86_64_GOT32:
 	case R_X86_64_GOTPCREL:
@@ -1368,6 +1452,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
 
 	  /* We also need to make an entry in the .rela.plt section.  */
 	  htab->srelplt->size += sizeof (Elf64_External_Rela);
+	  htab->srelplt->reloc_count++;
 	}
       else
 	{
@@ -1381,6 +1466,9 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
       h->needs_plt = 0;
     }
 
+  eh = (struct elf64_x86_64_link_hash_entry *) h;
+  eh->tlsdesc_got = (bfd_vma) -1;
+
   /* If R_X86_64_GOTTPOFF symbol is now local to the binary,
      make it a R_X86_64_TPOFF32 requiring no GOT entry.  */
   if (h->got.refcount > 0
@@ -1403,31 +1491,46 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
 	    return FALSE;
 	}
 
-      s = htab->sgot;
-      h->got.offset = s->size;
-      s->size += GOT_ENTRY_SIZE;
-      /* R_X86_64_TLSGD needs 2 consecutive GOT slots.  */
-      if (tls_type == GOT_TLS_GD)
-	s->size += GOT_ENTRY_SIZE;
+      if (GOT_TLS_GDESC_P (tls_type))
+	{
+	  eh->tlsdesc_got = htab->sgotplt->size
+	    - elf64_x86_64_compute_jump_table_size (htab);
+	  htab->sgotplt->size += 2 * GOT_ENTRY_SIZE;
+	  h->got.offset = (bfd_vma) -2;
+	}
+      if (! GOT_TLS_GDESC_P (tls_type)
+	  || GOT_TLS_GD_P (tls_type))
+	{
+	  s = htab->sgot;
+	  h->got.offset = s->size;
+	  s->size += GOT_ENTRY_SIZE;
+	  if (GOT_TLS_GD_P (tls_type))
+	    s->size += GOT_ENTRY_SIZE;
+	}
       dyn = htab->elf.dynamic_sections_created;
       /* R_X86_64_TLSGD needs one dynamic relocation if local symbol
 	 and two if global.
 	 R_X86_64_GOTTPOFF needs one dynamic relocation.  */
-      if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
+      if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
 	  || tls_type == GOT_TLS_IE)
 	htab->srelgot->size += sizeof (Elf64_External_Rela);
-      else if (tls_type == GOT_TLS_GD)
+      else if (GOT_TLS_GD_P (tls_type))
 	htab->srelgot->size += 2 * sizeof (Elf64_External_Rela);
-      else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
-		|| h->root.type != bfd_link_hash_undefweak)
+      else if (! GOT_TLS_GDESC_P (tls_type)
+	       && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+		   || h->root.type != bfd_link_hash_undefweak)
 	       && (info->shared
 		   || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
 	htab->srelgot->size += sizeof (Elf64_External_Rela);
+      if (GOT_TLS_GDESC_P (tls_type))
+	{
+	  htab->srelplt->size += sizeof (Elf64_External_Rela);
+	  htab->tlsdesc_plt = (bfd_vma) -1;
+	}
     }
   else
     h->got.offset = (bfd_vma) -1;
 
-  eh = (struct elf64_x86_64_link_hash_entry *) h;
   if (eh->dyn_relocs == NULL)
     return TRUE;
 
@@ -1575,6 +1678,7 @@ elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
       bfd_signed_vma *local_got;
       bfd_signed_vma *end_local_got;
       char *local_tls_type;
+      bfd_vma *local_tlsdesc_gotent;
       bfd_size_type locsymcount;
       Elf_Internal_Shdr *symtab_hdr;
       asection *srel;
@@ -1618,20 +1722,43 @@ elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
       locsymcount = symtab_hdr->sh_info;
       end_local_got = local_got + locsymcount;
       local_tls_type = elf64_x86_64_local_got_tls_type (ibfd);
+      local_tlsdesc_gotent = elf64_x86_64_local_tlsdesc_gotent (ibfd);
       s = htab->sgot;
       srel = htab->srelgot;
-      for (; local_got < end_local_got; ++local_got, ++local_tls_type)
+      for (; local_got < end_local_got;
+	   ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
 	{
+	  *local_tlsdesc_gotent = (bfd_vma) -1;
 	  if (*local_got > 0)
 	    {
-	      *local_got = s->size;
-	      s->size += GOT_ENTRY_SIZE;
-	      if (*local_tls_type == GOT_TLS_GD)
-		s->size += GOT_ENTRY_SIZE;
+	      if (GOT_TLS_GDESC_P (*local_tls_type))
+		{
+		  *local_tlsdesc_gotent = htab->sgotplt->size
+		    - elf64_x86_64_compute_jump_table_size (htab);
+		  htab->sgotplt->size += 2 * GOT_ENTRY_SIZE;
+		  *local_got = (bfd_vma) -2;
+		}
+	      if (! GOT_TLS_GDESC_P (*local_tls_type)
+		  || GOT_TLS_GD_P (*local_tls_type))
+		{
+		  *local_got = s->size;
+		  s->size += GOT_ENTRY_SIZE;
+		  if (GOT_TLS_GD_P (*local_tls_type))
+		    s->size += GOT_ENTRY_SIZE;
+		}
 	      if (info->shared
-		  || *local_tls_type == GOT_TLS_GD
+		  || GOT_TLS_GD_ANY_P (*local_tls_type)
 		  || *local_tls_type == GOT_TLS_IE)
-		srel->size += sizeof (Elf64_External_Rela);
+		{
+		  if (GOT_TLS_GDESC_P (*local_tls_type))
+		    {
+		      htab->srelplt->size += sizeof (Elf64_External_Rela);
+		      htab->tlsdesc_plt = (bfd_vma) -1;
+		    }
+		  if (! GOT_TLS_GDESC_P (*local_tls_type)
+		      || GOT_TLS_GD_P (*local_tls_type))
+		    srel->size += sizeof (Elf64_External_Rela);
+		}
 	    }
 	  else
 	    *local_got = (bfd_vma) -1;
@@ -1653,6 +1780,34 @@ elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
      sym dynamic relocs.  */
   elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
 
+  /* For every jump slot reserved in the sgotplt, reloc_count is
+     incremented.  However, when we reserve space for TLS descriptors,
+     it's not incremented, so in order to compute the space reserved
+     for them, it suffices to multiply the reloc count by the jump
+     slot size.  */
+  if (htab->srelplt)
+    htab->sgotplt_jump_table_size
+      = elf64_x86_64_compute_jump_table_size (htab);
+
+  if (htab->tlsdesc_plt)
+    {
+      /* If we're not using lazy TLS relocations, don't generate the
+	 PLT and GOT entries they require.  */
+      if ((info->flags & DF_BIND_NOW))
+	htab->tlsdesc_plt = 0;
+      else
+	{
+	  htab->tlsdesc_got = htab->sgot->size;
+	  htab->sgot->size += GOT_ENTRY_SIZE;
+	  /* Reserve room for the initial entry.
+	     FIXME: we could probably do away with it in this case.  */
+	  if (htab->splt->size == 0)
+	    htab->splt->size += PLT_ENTRY_SIZE;
+	  htab->tlsdesc_plt = htab->splt->size;
+	  htab->splt->size += PLT_ENTRY_SIZE;
+	}
+    }
+
   /* We now have determined the sizes of the various dynamic sections.
      Allocate memory for them.  */
   relocs = FALSE;
@@ -1676,7 +1831,8 @@ elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 
 	  /* We use the reloc_count field as a counter if we need
 	     to copy relocs into the output file.  */
-	  s->reloc_count = 0;
+	  if (s != htab->srelplt)
+	    s->reloc_count = 0;
 	}
       else
 	{
@@ -1736,6 +1892,11 @@ elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
 	      || !add_dynamic_entry (DT_PLTREL, DT_RELA)
 	      || !add_dynamic_entry (DT_JMPREL, 0))
 	    return FALSE;
+
+	  if (htab->tlsdesc_plt
+	      && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
+		  || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
+	    return FALSE;
 	}
 
       if (relocs)
@@ -1763,6 +1924,41 @@ elf64_x86_64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
   return TRUE;
 }
 
+static bfd_boolean
+elf64_x86_64_always_size_sections (bfd *output_bfd,
+				   struct bfd_link_info *info)
+{
+  asection *tls_sec = elf_hash_table (info)->tls_sec;
+
+  if (tls_sec)
+    {
+      struct elf_link_hash_entry *tlsbase;
+
+      tlsbase = elf_link_hash_lookup (elf_hash_table (info),
+				      "_TLS_MODULE_BASE_",
+				      FALSE, FALSE, FALSE);
+
+      if (tlsbase && tlsbase->type == STT_TLS)
+	{
+	  struct bfd_link_hash_entry *bh = NULL;
+	  const struct elf_backend_data *bed
+	    = get_elf_backend_data (output_bfd);
+
+	  if (!(_bfd_generic_link_add_one_symbol
+		(info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
+		 tls_sec, 0, NULL, FALSE,
+		 bed->collect, &bh)))
+	    return FALSE;
+	  tlsbase = (struct elf_link_hash_entry *)bh;
+	  tlsbase->def_regular = 1;
+	  tlsbase->other = STV_HIDDEN;
+	  (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
+	}
+    }
+
+  return TRUE;
+}
+
 /* Return the base VMA address which should be subtracted from real addresses
    when resolving @dtpoff relocation.
    This is PT_TLS segment p_vaddr.  */
@@ -1821,6 +2017,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
   Elf_Internal_Shdr *symtab_hdr;
   struct elf_link_hash_entry **sym_hashes;
   bfd_vma *local_got_offsets;
+  bfd_vma *local_tlsdesc_gotents;
   Elf_Internal_Rela *rel;
   Elf_Internal_Rela *relend;
 
@@ -1831,6 +2028,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (input_bfd);
   local_got_offsets = elf_local_got_offsets (input_bfd);
+  local_tlsdesc_gotents = elf64_x86_64_local_tlsdesc_gotent (input_bfd);
 
   rel = relocs;
   relend = relocs + input_section->reloc_count;
@@ -1842,7 +2040,7 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
       struct elf_link_hash_entry *h;
       Elf_Internal_Sym *sym;
       asection *sec;
-      bfd_vma off;
+      bfd_vma off, offplt;
       bfd_vma relocation;
       bfd_boolean unresolved_reloc;
       bfd_reloc_status_type r;
@@ -2201,6 +2399,8 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	  break;
 
 	case R_X86_64_TLSGD:
+	case R_X86_64_GOTPC32_TLSDESC:
+	case R_X86_64_TLSDESC_CALL:
 	case R_X86_64_GOTTPOFF:
 	  r_type = elf64_x86_64_tls_transition (info, r_type, h == NULL);
 	  tls_type = GOT_UNKNOWN;
@@ -2212,7 +2412,9 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	      if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
 		r_type = R_X86_64_TPOFF32;
 	    }
-	  if (r_type == R_X86_64_TLSGD)
+	  if (r_type == R_X86_64_TLSGD
+	      || r_type == R_X86_64_GOTPC32_TLSDESC
+	      || r_type == R_X86_64_TLSDESC_CALL)
 	    {
 	      if (tls_type == GOT_TLS_IE)
 		r_type = R_X86_64_GOTTPOFF;
@@ -2254,6 +2456,67 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 		  rel++;
 		  continue;
 		}
+	      else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
+		{
+		  /* GDesc -> LE transition.
+		     It's originally something like:
+		     leaq x@tlsdesc(%rip), %rax
+
+		     Change it to:
+		     movl $x@tpoff, %rax
+
+		     Registers other than %rax may be set up here.  */
+
+		  unsigned int val, type, type2;
+		  bfd_vma roff;
+
+		  /* First, make sure it's a leaq adding rip to a
+		     32-bit offset into any register, although it's
+		     probably almost always going to be rax.  */
+		  roff = rel->r_offset;
+		  BFD_ASSERT (roff >= 3);
+		  type = bfd_get_8 (input_bfd, contents + roff - 3);
+		  BFD_ASSERT ((type & 0xfb) == 0x48);
+		  type2 = bfd_get_8 (input_bfd, contents + roff - 2);
+		  BFD_ASSERT (type2 == 0x8d);
+		  val = bfd_get_8 (input_bfd, contents + roff - 1);
+		  BFD_ASSERT ((val & 0xc7) == 0x05);
+		  BFD_ASSERT (roff + 4 <= input_section->size);
+
+		  /* Now modify the instruction as appropriate.  */
+		  bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
+			     contents + roff - 3);
+		  bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
+		  bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
+			     contents + roff - 1);
+		  bfd_put_32 (output_bfd, tpoff (info, relocation),
+			      contents + roff);
+		  continue;
+		}
+	      else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
+		{
+		  /* GDesc -> LE transition.
+		     It's originally:
+		     call *(%rax)
+		     Turn it into:
+		     nop; nop.  */
+
+		  unsigned int val, type;
+		  bfd_vma roff;
+
+		  /* First, make sure it's a call *(%rax).  */
+		  roff = rel->r_offset;
+		  BFD_ASSERT (roff + 2 <= input_section->size);
+		  type = bfd_get_8 (input_bfd, contents + roff);
+		  BFD_ASSERT (type == 0xff);
+		  val = bfd_get_8 (input_bfd, contents + roff + 1);
+		  BFD_ASSERT (val == 0x10);
+
+		  /* Now modify the instruction as appropriate.  */
+		  bfd_put_8 (output_bfd, 0x90, contents + roff);
+		  bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
+		  continue;
+		}
 	      else
 		{
 		  unsigned int val, type, reg;
@@ -2319,13 +2582,17 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	    abort ();
 
 	  if (h != NULL)
-	    off = h->got.offset;
+	    {
+	      off = h->got.offset;
+	      offplt = elf64_x86_64_hash_entry (h)->tlsdesc_got;
+	    }
 	  else
 	    {
 	      if (local_got_offsets == NULL)
 		abort ();
 
 	      off = local_got_offsets[r_symndx];
+	      offplt = local_tlsdesc_gotents[r_symndx];
 	    }
 
 	  if ((off & 1) != 0)
@@ -2335,30 +2602,61 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	      Elf_Internal_Rela outrel;
 	      bfd_byte *loc;
 	      int dr_type, indx;
+	      asection *sreloc;
 
 	      if (htab->srelgot == NULL)
 		abort ();
 
+	      indx = h && h->dynindx != -1 ? h->dynindx : 0;
+
+	      if (GOT_TLS_GDESC_P (tls_type))
+		{
+		  outrel.r_info = ELF64_R_INFO (indx, R_X86_64_TLSDESC);
+		  BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
+			      + 2 * GOT_ENTRY_SIZE <= htab->sgotplt->size);
+		  outrel.r_offset = (htab->sgotplt->output_section->vma
+				     + htab->sgotplt->output_offset
+				     + offplt
+				     + htab->sgotplt_jump_table_size);
+		  sreloc = htab->srelplt;
+		  loc = sreloc->contents;
+		  loc += sreloc->reloc_count++
+		    * sizeof (Elf64_External_Rela);
+		  BFD_ASSERT (loc + sizeof (Elf64_External_Rela)
+			      <= sreloc->contents + sreloc->size);
+		  if (indx == 0)
+		    outrel.r_addend = relocation - dtpoff_base (info);
+		  else
+		    outrel.r_addend = 0;
+		  bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
+		}
+
+	      sreloc = htab->srelgot;
+
 	      outrel.r_offset = (htab->sgot->output_section->vma
 				 + htab->sgot->output_offset + off);
 
-	      indx = h && h->dynindx != -1 ? h->dynindx : 0;
-	      if (r_type == R_X86_64_TLSGD)
+	      if (GOT_TLS_GD_P (tls_type))
 		dr_type = R_X86_64_DTPMOD64;
+	      else if (GOT_TLS_GDESC_P (tls_type))
+		goto dr_done;
 	      else
 		dr_type = R_X86_64_TPOFF64;
 
 	      bfd_put_64 (output_bfd, 0, htab->sgot->contents + off);
 	      outrel.r_addend = 0;
-	      if (dr_type == R_X86_64_TPOFF64 && indx == 0)
+	      if ((dr_type == R_X86_64_TPOFF64
+		   || dr_type == R_X86_64_TLSDESC) && indx == 0)
 		outrel.r_addend = relocation - dtpoff_base (info);
 	      outrel.r_info = ELF64_R_INFO (indx, dr_type);
 
-	      loc = htab->srelgot->contents;
-	      loc += htab->srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
+	      loc = sreloc->contents;
+	      loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
+	      BFD_ASSERT (loc + sizeof (Elf64_External_Rela)
+			  <= sreloc->contents + sreloc->size);
 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
 
-	      if (r_type == R_X86_64_TLSGD)
+	      if (GOT_TLS_GD_P (tls_type))
 		{
 		  if (indx == 0)
 		    {
@@ -2374,27 +2672,37 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 		      outrel.r_info = ELF64_R_INFO (indx,
 						    R_X86_64_DTPOFF64);
 		      outrel.r_offset += GOT_ENTRY_SIZE;
-		      htab->srelgot->reloc_count++;
+		      sreloc->reloc_count++;
 		      loc += sizeof (Elf64_External_Rela);
+		      BFD_ASSERT (loc + sizeof (Elf64_External_Rela)
+				  <= sreloc->contents + sreloc->size);
 		      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
 		    }
 		}
 
+	    dr_done:
 	      if (h != NULL)
 		h->got.offset |= 1;
 	      else
 		local_got_offsets[r_symndx] |= 1;
 	    }
 
-	  if (off >= (bfd_vma) -2)
+	  if (off >= (bfd_vma) -2
+	      && ! GOT_TLS_GDESC_P (tls_type))
 	    abort ();
 	  if (r_type == ELF64_R_TYPE (rel->r_info))
 	    {
-	      relocation = htab->sgot->output_section->vma
-			   + htab->sgot->output_offset + off;
+	      if (r_type == R_X86_64_GOTPC32_TLSDESC
+		  || r_type == R_X86_64_TLSDESC_CALL)
+		relocation = htab->sgotplt->output_section->vma
+		  + htab->sgotplt->output_offset
+		  + offplt + htab->sgotplt_jump_table_size;
+	      else
+		relocation = htab->sgot->output_section->vma
+		  + htab->sgot->output_offset + off;
 	      unresolved_reloc = FALSE;
 	    }
-	  else
+	  else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
 	    {
 	      unsigned int i;
 	      static unsigned char tlsgd[8]
@@ -2434,6 +2742,77 @@ elf64_x86_64_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
 	      rel++;
 	      continue;
 	    }
+	  else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
+	    {
+	      /* GDesc -> IE transition.
+		 It's originally something like:
+		 leaq x@tlsdesc(%rip), %rax
+
+		 Change it to:
+		 movq x@gottpoff(%rip), %rax # before nop; nop
+
+		 Registers other than %rax may be set up here.  */
+
+	      unsigned int val, type, type2;
+	      bfd_vma roff;
+
+	      /* First, make sure it's a leaq adding rip to a 32-bit
+		 offset into any register, although it's probably
+		 almost always going to be rax.  */
+	      roff = rel->r_offset;
+	      BFD_ASSERT (roff >= 3);
+	      type = bfd_get_8 (input_bfd, contents + roff - 3);
+	      BFD_ASSERT ((type & 0xfb) == 0x48);
+	      type2 = bfd_get_8 (input_bfd, contents + roff - 2);
+	      BFD_ASSERT (type2 == 0x8d);
+	      val = bfd_get_8 (input_bfd, contents + roff - 1);
+	      BFD_ASSERT ((val & 0xc7) == 0x05);
+	      BFD_ASSERT (roff + 4 <= input_section->size);
+
+	      /* Now modify the instruction as appropriate.  */
+	      /* To turn a leaq into a movq in the form we use it, it
+		 suffices to change the second byte from 0x8d to
+		 0x8b.  */
+	      bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
+
+	      bfd_put_32 (output_bfd,
+			  htab->sgot->output_section->vma
+			  + htab->sgot->output_offset + off
+			  - rel->r_offset
+			  - input_section->output_section->vma
+			  - input_section->output_offset
+			  - 4,
+			  contents + roff);
+	      continue;
+	    }
+	  else if (ELF64_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
+	    {
+	      /* GDesc -> IE transition.
+		 It's originally:
+		 call *(%rax)
+
+		 Change it to:
+		 nop; nop.  */
+
+	      unsigned int val, type;
+	      bfd_vma roff;
+
+	      /* First, make sure it's a call *(%eax).  */
+	      roff = rel->r_offset;
+	      BFD_ASSERT (roff + 2 <= input_section->size);
+	      type = bfd_get_8 (input_bfd, contents + roff);
+	      BFD_ASSERT (type == 0xff);
+	      val = bfd_get_8 (input_bfd, contents + roff + 1);
+	      BFD_ASSERT (val == 0x10);
+
+	      /* Now modify the instruction as appropriate.  */
+	      bfd_put_8 (output_bfd, 0x90, contents + roff);
+	      bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
+
+	      continue;
+	    }
+	  else
+	    BFD_ASSERT (FALSE);
 	  break;
 
 	case R_X86_64_TLSLD:
@@ -2672,7 +3051,7 @@ elf64_x86_64_finish_dynamic_symbol (bfd *output_bfd,
     }
 
   if (h->got.offset != (bfd_vma) -1
-      && elf64_x86_64_hash_entry (h)->tls_type != GOT_TLS_GD
+      && ! GOT_TLS_GD_ANY_P (elf64_x86_64_hash_entry (h)->tls_type)
       && elf64_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
     {
       Elf_Internal_Rela rela;
@@ -2827,6 +3206,18 @@ elf64_x86_64_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *inf
 		  dyn.d_un.d_val -= s->size;
 		}
 	      break;
+
+	    case DT_TLSDESC_PLT:
+	      s = htab->splt;
+	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+		+ htab->tlsdesc_plt;
+	      break;
+
+	    case DT_TLSDESC_GOT:
+	      s = htab->sgot;
+	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+		+ htab->tlsdesc_got;
+	      break;
 	    }
 
 	  bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
@@ -2861,6 +3252,40 @@ elf64_x86_64_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *inf
 
 	  elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize =
 	    PLT_ENTRY_SIZE;
+
+	  if (htab->tlsdesc_plt)
+	    {
+	      bfd_put_64 (output_bfd, (bfd_vma) 0,
+			  htab->sgot->contents + htab->tlsdesc_got);
+
+	      memcpy (htab->splt->contents + htab->tlsdesc_plt,
+		      elf64_x86_64_plt0_entry,
+		      PLT_ENTRY_SIZE);
+
+	      /* Add offset for pushq GOT+8(%rip), since the
+		 instruction uses 6 bytes subtract this value.  */
+	      bfd_put_32 (output_bfd,
+			  (htab->sgotplt->output_section->vma
+			   + htab->sgotplt->output_offset
+			   + 8
+			   - htab->splt->output_section->vma
+			   - htab->splt->output_offset
+			   - htab->tlsdesc_plt
+			   - 6),
+			  htab->splt->contents + htab->tlsdesc_plt + 2);
+	      /* Add offset for jmp *GOT+TDG(%rip), where TGD stands for
+		 htab->tlsdesc_got. The 12 is the offset to the end of
+		 the instruction.  */
+	      bfd_put_32 (output_bfd,
+			  (htab->sgot->output_section->vma
+			   + htab->sgot->output_offset
+			   + htab->tlsdesc_got
+			   - htab->splt->output_section->vma
+			   - htab->splt->output_offset
+			   - htab->tlsdesc_plt
+			   - 12),
+			  htab->splt->contents + htab->tlsdesc_plt + 8);
+	    }
 	}
     }
 
@@ -3132,6 +3557,7 @@ static const struct bfd_elf_special_section
 #define elf_backend_reloc_type_class	    elf64_x86_64_reloc_type_class
 #define elf_backend_relocate_section	    elf64_x86_64_relocate_section
 #define elf_backend_size_dynamic_sections   elf64_x86_64_size_dynamic_sections
+#define elf_backend_always_size_sections    elf64_x86_64_always_size_sections
 #define elf_backend_plt_sym_val		    elf64_x86_64_plt_sym_val
 #define elf_backend_object_p		    elf64_x86_64_elf_object_p
 #define bfd_elf64_mkobject		    elf64_x86_64_mkobject