commit d394eb742a3565d7fe7a4b02710a60b5f219ee64
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Oct 12 09:21:47 2012 -0700

    Use __uint64_t in x86 __bswap_64

diff --git a/sysdeps/x86/bits/byteswap.h b/sysdeps/x86/bits/byteswap.h
index 4178439..babe567 100644
--- a/sysdeps/x86/bits/byteswap.h
+++ b/sysdeps/x86/bits/byteswap.h
@@ -24,6 +24,7 @@
 #define _BITS_BYTESWAP_H 1
 
 #include <features.h>
+#include <bits/types.h>
 #include <bits/wordsize.h>
 
 /* Swap bytes in 16 bit value.  */
@@ -104,15 +105,15 @@ __bswap_32 (unsigned int __bsx)
 		     | (((x) & 0x00000000000000ffull) << 56)))
 
 # if __GNUC_PREREQ (4, 2)
-static __inline unsigned long long int
-__bswap_64 (unsigned long long int __bsx)
+static __inline __uint64_t
+__bswap_64 (__uint64_t __bsx)
 {
   return __builtin_bswap64 (__bsx);
 }
 # elif __WORDSIZE == 64
 #  define __bswap_64(x) \
      (__extension__							      \
-      ({ register unsigned long __v, __x = (x);				      \
+      ({ register __uint64_t __v, __x = (x);				      \
 	 if (__builtin_constant_p (__x))				      \
 	   __v = __bswap_constant_64 (__x);				      \
 	 else								      \
@@ -121,7 +122,7 @@ __bswap_64 (unsigned long long int __bsx)
 # else
 #  define __bswap_64(x) \
      (__extension__                                                           \
-      ({ union { __extension__ unsigned long long int __ll;                   \
+      ({ union { __extension__ __uint64_t __ll;		                      \
 		 unsigned int __l[2]; } __w, __r;                             \
 	 if (__builtin_constant_p (x))                                        \
 	   __r.__ll = __bswap_constant_64 (x);                                \
@@ -144,8 +145,8 @@ __bswap_64 (unsigned long long int __bsx)
       | (((x) & 0x000000000000ff00ull) << 40)				      \
       | (((x) & 0x00000000000000ffull) << 56))
 
-static __inline unsigned long long int
-__bswap_64 (unsigned long long int __bsx)
+static __inline __uint64_t
+__bswap_64 (__uint64_t __bsx)
 {
   return __bswap_constant_64 (__bsx);
 }