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| author | H.J. Lu <hjl.tools@gmail.com> | 2012-04-06 15:13:09 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2012-04-06 15:14:52 -0700 |
| commit | f8887d0a5feda97244613135822b0439addc2b1f (patch) | |
| tree | 21b9a587a4fc42960d4b48e4a49c2f8250378493 /sysdeps/i386/bits/byteswap.h | |
| parent | d4d1707fd64567d464de98893f52999cd40a51cd (diff) | |
| download | glibc-f8887d0a5feda97244613135822b0439addc2b1f.tar glibc-f8887d0a5feda97244613135822b0439addc2b1f.tar.gz glibc-f8887d0a5feda97244613135822b0439addc2b1f.tar.bz2 glibc-f8887d0a5feda97244613135822b0439addc2b1f.zip | |
Add byteswap-16.h for __bswap_16
Diffstat (limited to 'sysdeps/i386/bits/byteswap.h')
| -rw-r--r-- | sysdeps/i386/bits/byteswap.h | 29 |
1 files changed, 2 insertions, 27 deletions
diff --git a/sysdeps/i386/bits/byteswap.h b/sysdeps/i386/bits/byteswap.h index fb0a827c8d..3542816385 100644 --- a/sysdeps/i386/bits/byteswap.h +++ b/sysdeps/i386/bits/byteswap.h @@ -27,33 +27,8 @@ #define __bswap_constant_16(x) \ ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))) -#ifdef __GNUC__ -# if __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 -#else -static __inline unsigned short int -__bswap_16 (unsigned short int __bsx) -{ - return __bswap_constant_16 (__bsx); -} -#endif +/* Get __bswap_16. */ +#include <bits/byteswap-16.h> /* Swap bytes in 32 bit value. */ #define __bswap_constant_32(x) \ |