summary refs log tree commit diff
path: root/sysdeps/x86_64/bits/byteswap.h
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/x86_64/bits/byteswap.h')
-rw-r--r--sysdeps/x86_64/bits/byteswap.h22
1 files changed, 2 insertions, 20 deletions
diff --git a/sysdeps/x86_64/bits/byteswap.h b/sysdeps/x86_64/bits/byteswap.h
index 472281fc82..d7e503c622 100644
--- a/sysdeps/x86_64/bits/byteswap.h
+++ b/sysdeps/x86_64/bits/byteswap.h
@@ -29,26 +29,8 @@
 #define __bswap_constant_16(x) \
      ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
 
-#if defined __GNUC__ && __GNUC__ >= 2
-# define __bswap_16(x) \
-     (__extension__							      \
-      ({ register unsigned short int __v, __x = (unsigned short int) (x);     \
-	 if (__builtin_constant_p (__x))				      \
-	   __v = __bswap_constant_16 (__x);				      \
-	 else								      \
-	   __asm__ ("rorw $8, %w0"					      \
-		    : "=r" (__v)					      \
-		    : "0" (__x)						      \
-		    : "cc");						      \
-	 __v; }))
-#else
-/* This is better than nothing.  */
-# define __bswap_16(x) \
-     (__extension__							      \
-      ({ register unsigned short int __x = (unsigned short int) (x);          \
-	 __bswap_constant_16 (__x); }))
-#endif
-
+/* Get __bswap_16.  */
+#include <bits/byteswap-16.h>
 
 /* Swap bytes in 32 bit value.  */
 #define __bswap_constant_32(x) \