diff --git a/gdb/common/common-types.h b/gdb/common/common-types.h
new file mode 100644
index 0000000..9fa1c24
--- /dev/null
+++ b/gdb/common/common-types.h
@@ -0,0 +1,61 @@
+/* Declarations for common types.
+
+   Copyright (C) 1986-2014 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef COMMON_TYPES_H
+#define COMMON_TYPES_H
+
+#ifdef GDBSERVER
+
+/* * A byte from the program being debugged.  */
+typedef unsigned char gdb_byte;
+
+typedef unsigned long long CORE_ADDR;
+
+typedef long long LONGEST;
+typedef unsigned long long ULONGEST;
+
+#else /* GDBSERVER */
+
+#include "bfd.h"
+
+/* * A byte from the program being debugged.  */
+typedef bfd_byte gdb_byte;
+
+/* * An address in the program being debugged.  Host byte order.  */
+typedef bfd_vma CORE_ADDR;
+
+/* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
+
+#ifdef BFD64
+
+typedef BFD_HOST_64_BIT LONGEST;
+typedef BFD_HOST_U_64_BIT ULONGEST;
+
+#else /* No BFD64 */
+
+typedef long long LONGEST;
+typedef unsigned long long ULONGEST;
+
+#endif /* No BFD64 */
+#endif /* GDBSERVER */
+
+/* * The largest CORE_ADDR value.  */
+#define CORE_ADDR_MAX (~ (CORE_ADDR) 0)
+
+#endif /* COMMON_TYPES_H */
diff --git a/gdb/defs.h b/gdb/defs.h
index 511279a..d2a9447 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -96,35 +96,7 @@
 
 #include "libiberty.h"
 #include "hashtab.h"
-
-/* Rather than duplicate all the logic in BFD for figuring out what
-   types to use (which can be pretty complicated), symply define them
-   in terms of the corresponding type from BFD.  */
-
-#include "bfd.h"
-
-/* * A byte from the program being debugged.  */
-typedef bfd_byte gdb_byte;
-
-/* * An address in the program being debugged.  Host byte order.  */
-typedef bfd_vma CORE_ADDR;
-
-/* * The largest CORE_ADDR value.  */
-#define CORE_ADDR_MAX (~ (CORE_ADDR) 0)
-
-/* This is to make sure that LONGEST is at least as big as CORE_ADDR.  */
-
-#ifdef BFD64
-
-#define LONGEST BFD_HOST_64_BIT
-#define ULONGEST BFD_HOST_U_64_BIT
-
-#else /* No BFD64 */
-
-#define LONGEST long long
-#define ULONGEST unsigned long long
-
-#endif /* No BFD64 */
+#include "common-types.h"
 
 #ifndef min
 #define min(a, b) ((a) < (b) ? (a) : (b))
diff --git a/gdb/gdbserver/server.h b/gdb/gdbserver/server.h
index 2d55513..67214fa 100644
--- a/gdb/gdbserver/server.h
+++ b/gdb/gdbserver/server.h
@@ -77,20 +77,14 @@ int vsnprintf(char *str, size_t size, const char *format, va_list ap);
 #  define PROG "gdbserver"
 #endif
 
-/* A type used for binary buffers.  */
-typedef unsigned char gdb_byte;
-
 #include "ptid.h"
 #include "buffer.h"
 #include "xml-utils.h"
 #include "gdb_locale.h"
+#include "common-types.h"
+#include "gdb_assert.h"
 
-/* FIXME: This should probably be autoconf'd for.  It's an integer type at
-   least the size of a (void *).  */
-typedef unsigned long long CORE_ADDR;
-
-typedef long long LONGEST;
-typedef unsigned long long ULONGEST;
+gdb_static_assert (sizeof (CORE_ADDR) >= sizeof (void *));
 
 #include "regcache.h"
 #include "gdb/signals.h"
@@ -147,8 +141,6 @@ extern int handle_target_event (int err, gdb_client_data client_data);
 #include "utils.h"
 #include "debug.h"
 
-#include "gdb_assert.h"
-
 /* Maximum number of bytes to read/write at once.  The value here
    is chosen to fill up a packet (the headers account for the 32).  */
 #define MAXBUFBYTES(N) (((N)-32)/2)
diff --git a/gdb/nat/linux-ptrace.c b/gdb/nat/linux-ptrace.c
index 59c9bfa..e3462ec 100644
--- a/gdb/nat/linux-ptrace.c
+++ b/gdb/nat/linux-ptrace.c
@@ -29,6 +29,7 @@
 #include "buffer.h"
 #include "gdb_assert.h"
 #include "gdb_wait.h"
+#include "common-types.h"
 
 #include <stdint.h>
 
