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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/s390/bits/byteswap.h | |
| parent | d4d1707fd64567d464de98893f52999cd40a51cd (diff) | |
| download | glibc-f8887d0a5feda97244613135822b0439addc2b1f.tar.gz glibc-f8887d0a5feda97244613135822b0439addc2b1f.tar.xz glibc-f8887d0a5feda97244613135822b0439addc2b1f.zip | |
Add byteswap-16.h for __bswap_16
Diffstat (limited to 'sysdeps/s390/bits/byteswap.h')
| -rw-r--r-- | sysdeps/s390/bits/byteswap.h | 42 |
1 files changed, 2 insertions, 40 deletions
diff --git a/sysdeps/s390/bits/byteswap.h b/sysdeps/s390/bits/byteswap.h index fd7c279509..e91d4ccb8f 100644 --- a/sysdeps/s390/bits/byteswap.h +++ b/sysdeps/s390/bits/byteswap.h @@ -29,46 +29,8 @@ #define __bswap_constant_16(x) \ ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)) -/* Swap bytes in 16 bit value. */ -#if defined __GNUC__ && __GNUC__ >= 2 -# if __WORDSIZE == 64 -# define __bswap_16(x) \ - (__extension__ \ - ({ unsigned short int __v, __x = (x); \ - if (__builtin_constant_p (x)) \ - __v = __bswap_constant_16 (__x); \ - else { \ - unsigned short int __tmp = (unsigned short int) (__x); \ - __asm__ __volatile__ ( \ - "lrvh %0,%1" \ - : "=&d" (__v) : "m" (__tmp) ); \ - } \ - __v; })) -# else -# define __bswap_16(x) \ - (__extension__ \ - ({ unsigned short int __v, __x = (x); \ - if (__builtin_constant_p (x)) \ - __v = __bswap_constant_16 (__x); \ - else { \ - unsigned short int __tmp = (unsigned short int) (__x); \ - __asm__ __volatile__ ( \ - "sr %0,%0\n" \ - "la 1,%1\n" \ - "icm %0,2,1(1)\n" \ - "ic %0,0(1)" \ - : "=&d" (__v) : "m" (__tmp) : "1"); \ - } \ - __v; })) -# endif -#else -/* This is better than nothing. */ -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) \ |