diff --git a/sysdeps/aarch64/dl-tls.h b/sysdeps/aarch64/dl-tls.h
index 71265c5..7eff427 100644
--- a/sysdeps/aarch64/dl-tls.h
+++ b/sysdeps/aarch64/dl-tls.h
@@ -25,6 +25,3 @@ typedef struct
 
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED ((void *) -1l)
diff --git a/sysdeps/aarch64/nptl/tls.h b/sysdeps/aarch64/nptl/tls.h
index 95ea3f9..c5f20ef 100644
--- a/sysdeps/aarch64/nptl/tls.h
+++ b/sysdeps/aarch64/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/alpha/dl-tls.h b/sysdeps/alpha/dl-tls.h
index 5f4e4cf..b723a6e 100644
--- a/sysdeps/alpha/dl-tls.h
+++ b/sysdeps/alpha/dl-tls.h
@@ -25,6 +25,3 @@ typedef struct
 } tls_index;
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/alpha/nptl/tls.h b/sysdeps/alpha/nptl/tls.h
index 90d98e1..0d63770 100644
--- a/sysdeps/alpha/nptl/tls.h
+++ b/sysdeps/alpha/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 /* Get system call information.  */
 # include <sysdep.h>
diff --git a/sysdeps/arm/dl-tls.h b/sysdeps/arm/dl-tls.h
index ed2efe8..be2fe62 100644
--- a/sysdeps/arm/dl-tls.h
+++ b/sysdeps/arm/dl-tls.h
@@ -26,6 +26,3 @@ typedef struct dl_tls_index
 
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/arm/nptl/tls.h b/sysdeps/arm/nptl/tls.h
index 1ef57d2..9b9a521 100644
--- a/sysdeps/arm/nptl/tls.h
+++ b/sysdeps/arm/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/generic/dl-dtv.h b/sysdeps/generic/dl-dtv.h
new file mode 100644
index 0000000..36c5c58
--- /dev/null
+++ b/sysdeps/generic/dl-dtv.h
@@ -0,0 +1,36 @@
+/* Generic declarations for DTV-based TLS handling in the dynamic linker.
+   Copyright (C) 2002-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _DL_DTV_H
+#define _DL_DTV_H
+
+/* Type for the dtv.  */
+typedef union dtv
+{
+  size_t counter;
+  struct
+  {
+    void *val;
+    bool is_static;
+  } pointer;
+} dtv_t;
+
+/* Value used for dtv entries for which the allocation is delayed.  */
+#define TLS_DTV_UNALLOCATED ((void *) -1l)
+
+#endif /* _DLT_DTV_H */
diff --git a/sysdeps/hppa/dl-tls.h b/sysdeps/hppa/dl-tls.h
index 58b9280..2cae6e4 100644
--- a/sysdeps/hppa/dl-tls.h
+++ b/sysdeps/hppa/dl-tls.h
@@ -26,6 +26,3 @@ typedef struct
 
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/hppa/nptl/tls.h b/sysdeps/hppa/nptl/tls.h
index 2e0c861..14a0083 100644
--- a/sysdeps/hppa/nptl/tls.h
+++ b/sysdeps/hppa/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/i386/dl-tls.h b/sysdeps/i386/dl-tls.h
index 1a8c358..d798b9a 100644
--- a/sysdeps/i386/dl-tls.h
+++ b/sysdeps/i386/dl-tls.h
@@ -59,6 +59,3 @@ rtld_hidden_def (___tls_get_addr)
 
 # endif
 #endif
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/i386/nptl/tls.h b/sysdeps/i386/nptl/tls.h
index a6dfa9b..74a11dd 100644
--- a/sysdeps/i386/nptl/tls.h
+++ b/sysdeps/i386/nptl/tls.h
@@ -28,19 +28,7 @@
 # include <sysdep.h>
 # include <libc-internal.h>
 # include <kernel-features.h>
-
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
-
+# include <dl-dtv.h>
 
 typedef struct
 {
diff --git a/sysdeps/ia64/dl-tls.h b/sysdeps/ia64/dl-tls.h
index bc00888..756b84d 100644
--- a/sysdeps/ia64/dl-tls.h
+++ b/sysdeps/ia64/dl-tls.h
@@ -28,6 +28,3 @@
 #define DONT_USE_TLS_INDEX	1
 
 extern void *__tls_get_addr (size_t m, size_t offset);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/ia64/nptl/tls.h b/sysdeps/ia64/nptl/tls.h
index 54fddf5..1e03e2c 100644
--- a/sysdeps/ia64/nptl/tls.h
+++ b/sysdeps/ia64/nptl/tls.h
@@ -26,19 +26,7 @@
 # include <stdint.h>
 # include <stdlib.h>
 # include <list.h>
-
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
-
+# include <dl-dtv.h>
 
 typedef struct
 {
diff --git a/sysdeps/m68k/dl-tls.h b/sysdeps/m68k/dl-tls.h
index f853b99..d24ad90 100644
--- a/sysdeps/m68k/dl-tls.h
+++ b/sysdeps/m68k/dl-tls.h
@@ -45,6 +45,3 @@ extern void *__tls_get_addr (tls_index *ti);
 
 #define GET_ADDR_OFFSET		(ti->ti_offset + TLS_DTV_OFFSET)
 #define __TLS_GET_ADDR(__ti)	(__tls_get_addr (__ti) - TLS_DTV_OFFSET)
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/m68k/nptl/tls.h b/sysdeps/m68k/nptl/tls.h
index f932282..4825c4c 100644
--- a/sysdeps/m68k/nptl/tls.h
+++ b/sysdeps/m68k/nptl/tls.h
@@ -26,17 +26,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/mach/hurd/i386/tls.h b/sysdeps/mach/hurd/i386/tls.h
index 3ec5bb0..81e6926 100644
--- a/sysdeps/mach/hurd/i386/tls.h
+++ b/sysdeps/mach/hurd/i386/tls.h
@@ -25,17 +25,7 @@
 
 
 #ifndef __ASSEMBLER__
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
-
+# include <dl-dtv.h>
 
 /* Type of the TCB.  */
 typedef struct
diff --git a/sysdeps/microblaze/dl-tls.h b/sysdeps/microblaze/dl-tls.h
index f0f8205..5613e21 100644
--- a/sysdeps/microblaze/dl-tls.h
+++ b/sysdeps/microblaze/dl-tls.h
@@ -24,6 +24,3 @@ typedef struct
 } tls_index;
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/microblaze/nptl/tls.h b/sysdeps/microblaze/nptl/tls.h
index 8376f50..5e9560a 100644
--- a/sysdeps/microblaze/nptl/tls.h
+++ b/sysdeps/microblaze/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/mips/dl-tls.h b/sysdeps/mips/dl-tls.h
index 4d084d6..1c5a83f 100644
--- a/sysdeps/mips/dl-tls.h
+++ b/sysdeps/mips/dl-tls.h
@@ -43,6 +43,3 @@ extern void *__tls_get_addr (tls_index *ti);
 
 # define GET_ADDR_OFFSET	(ti->ti_offset + TLS_DTV_OFFSET)
 # define __TLS_GET_ADDR(__ti)	(__tls_get_addr (__ti) - TLS_DTV_OFFSET)
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/mips/nptl/tls.h b/sysdeps/mips/nptl/tls.h
index 10ca878..f5f4891 100644
--- a/sysdeps/mips/nptl/tls.h
+++ b/sysdeps/mips/nptl/tls.h
@@ -25,20 +25,11 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
+# include <dl-dtv.h>
+
 /* Get system call information.  */
 # include <sysdep.h>
 
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
-
 #ifdef __mips16
 /* MIPS16 uses GCC builtin to access the TP.  */
 # define READ_THREAD_POINTER() (__builtin_thread_pointer ())
diff --git a/sysdeps/nios2/dl-tls.h b/sysdeps/nios2/dl-tls.h
index cd79461..45c0db2 100644
--- a/sysdeps/nios2/dl-tls.h
+++ b/sysdeps/nios2/dl-tls.h
@@ -43,6 +43,3 @@ extern void *__tls_get_addr (tls_index *ti);
 
 # define GET_ADDR_OFFSET	(ti->ti_offset + TLS_DTV_OFFSET)
 # define __TLS_GET_ADDR(__ti)	(__tls_get_addr (__ti) - TLS_DTV_OFFSET)
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/nios2/nptl/tls.h b/sysdeps/nios2/nptl/tls.h
index ad29ac5..55e1154 100644
--- a/sysdeps/nios2/nptl/tls.h
+++ b/sysdeps/nios2/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/powerpc/dl-tls.h b/sysdeps/powerpc/dl-tls.h
index eced36b..f8b6fcf 100644
--- a/sysdeps/powerpc/dl-tls.h
+++ b/sysdeps/powerpc/dl-tls.h
@@ -49,7 +49,4 @@ extern void *__tls_get_addr (tls_index *ti);
 # define __TLS_GET_ADDR(__ti)	(__tls_get_addr (__ti) - TLS_DTV_OFFSET)
 #endif
 
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
-
 #endif /* dl-tls.h */
diff --git a/sysdeps/powerpc/nptl/tls.h b/sysdeps/powerpc/nptl/tls.h
index 0e889bc..fa476a5 100644
--- a/sysdeps/powerpc/nptl/tls.h
+++ b/sysdeps/powerpc/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/s390/dl-tls.h b/sysdeps/s390/dl-tls.h
index 503048a..ce2d020 100644
--- a/sysdeps/s390/dl-tls.h
+++ b/sysdeps/s390/dl-tls.h
@@ -102,6 +102,3 @@ extern void *__tls_get_addr_internal (tls_index *ti);
       + (unsigned long) __builtin_thread_pointer (); })
 
 #endif
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/s390/nptl/tls.h b/sysdeps/s390/nptl/tls.h
index e4c3ec7..0fec586 100644
--- a/sysdeps/s390/nptl/tls.h
+++ b/sysdeps/s390/nptl/tls.h
@@ -27,19 +27,7 @@
 # include <stdlib.h>
 # include <list.h>
 # include <kernel-features.h>
-
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
-
+# include <dl-dtv.h>
 
 typedef struct
 {
diff --git a/sysdeps/sh/dl-tls.h b/sysdeps/sh/dl-tls.h
index 276ec54..52e2a10 100644
--- a/sysdeps/sh/dl-tls.h
+++ b/sysdeps/sh/dl-tls.h
@@ -26,6 +26,3 @@ typedef struct
 
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/sh/nptl/tls.h b/sysdeps/sh/nptl/tls.h
index 6f128c9..a81e805 100644
--- a/sysdeps/sh/nptl/tls.h
+++ b/sysdeps/sh/nptl/tls.h
@@ -28,17 +28,7 @@
 # include <stdlib.h>
 # include <list.h>
 # include <sysdep.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 typedef struct
 {
diff --git a/sysdeps/sparc/dl-tls.h b/sysdeps/sparc/dl-tls.h
index 2bfd366..b74861a 100644
--- a/sysdeps/sparc/dl-tls.h
+++ b/sysdeps/sparc/dl-tls.h
@@ -26,6 +26,3 @@ typedef struct
 
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/sparc/nptl/tls.h b/sysdeps/sparc/nptl/tls.h
index 08c0552..85f2a2c 100644
--- a/sysdeps/sparc/nptl/tls.h
+++ b/sysdeps/sparc/nptl/tls.h
@@ -27,17 +27,7 @@
 # include <stdlib.h>
 # include <list.h>
 # include <kernel-features.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 typedef struct
 {
diff --git a/sysdeps/tile/dl-tls.h b/sysdeps/tile/dl-tls.h
index d26c6be..20096f4 100644
--- a/sysdeps/tile/dl-tls.h
+++ b/sysdeps/tile/dl-tls.h
@@ -40,6 +40,3 @@ extern void *__tls_get_addr (tls_index *ti);
 /* Compute the value for a DTPREL reloc.  */
 #define TLS_DTPREL_VALUE(sym) \
   ((sym)->st_value - TLS_DTV_OFFSET)
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED    ((void *) -1l)
diff --git a/sysdeps/tile/nptl/tls.h b/sysdeps/tile/nptl/tls.h
index c908fb8..16e8faf 100644
--- a/sysdeps/tile/nptl/tls.h
+++ b/sysdeps/tile/nptl/tls.h
@@ -25,17 +25,7 @@
 # include <stdbool.h>
 # include <stddef.h>
 # include <stdint.h>
-
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
+# include <dl-dtv.h>
 
 #else /* __ASSEMBLER__ */
 # include <tcb-offsets.h>
diff --git a/sysdeps/x86_64/dl-tls.h b/sysdeps/x86_64/dl-tls.h
index 0f101e6..cf6c107 100644
--- a/sysdeps/x86_64/dl-tls.h
+++ b/sysdeps/x86_64/dl-tls.h
@@ -27,6 +27,3 @@ typedef struct dl_tls_index
 
 
 extern void *__tls_get_addr (tls_index *ti);
-
-/* Value used for dtv entries for which the allocation is delayed.  */
-#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/x86_64/nptl/tls.h b/sysdeps/x86_64/nptl/tls.h
index 2b061a0..1bf9586 100644
--- a/sysdeps/x86_64/nptl/tls.h
+++ b/sysdeps/x86_64/nptl/tls.h
@@ -28,6 +28,7 @@
 # include <sysdep.h>
 # include <libc-internal.h>
 # include <kernel-features.h>
+# include <dl-dtv.h>
 
 /* Replacement type for __m128 since this file is included by ld.so,
    which is compiled with -mno-sse.  It must not change the alignment
@@ -38,18 +39,6 @@ typedef struct
 } __128bits;
 
 
-/* Type for the dtv.  */
-typedef union dtv
-{
-  size_t counter;
-  struct
-  {
-    void *val;
-    bool is_static;
-  } pointer;
-} dtv_t;
-
-
 typedef struct
 {
   void *tcb;		/* Pointer to the TCB.  Not necessarily the
