diff options
Diffstat (limited to 'libc/sysdeps/linux/ia64')
| -rw-r--r-- | libc/sysdeps/linux/ia64/bits/byteswap.h | 100 |
1 files changed, 21 insertions, 79 deletions
diff --git a/libc/sysdeps/linux/ia64/bits/byteswap.h b/libc/sysdeps/linux/ia64/bits/byteswap.h index 6862aa0b6..346c82c04 100644 --- a/libc/sysdeps/linux/ia64/bits/byteswap.h +++ b/libc/sysdeps/linux/ia64/bits/byteswap.h @@ -17,94 +17,36 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ -#if !defined _BYTESWAP_H && !defined _NETINET_IN_H -# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead." -#endif - -#ifndef _BITS_BYTESWAP_H -#define _BITS_BYTESWAP_H 1 - -/* Swap bytes in 16 bit value. */ -#define __bswap_constant_16(x) \ - ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)) +#ifndef _ASM_BITS_BYTESWAP_H +#define _ASM_BITS_BYTESWAP_H 1 -#if defined __GNUC__ && __GNUC__ >= 2 -# define __bswap_16(x) \ +#define __bswap_non_constant_16(x) \ (__extension__ \ - ({ register unsigned short int __v, __x = (x); \ - if (__builtin_constant_p (x)) \ - __v = __bswap_constant_16 (__x); \ - else \ - __asm__ __volatile__ ("shl %0 = %1, 48 ;;" \ - "mux1 %0 = %0, @rev ;;" \ - : "=r" (__v) \ - : "r" ((unsigned short int) (__x))); \ + ({ register unsigned short int __v; \ + __asm__ __volatile__ ("shl %0 = %1, 48 ;;" \ + "mux1 %0 = %0, @rev ;;" \ + : "=r" (__v) \ + : "r" ((unsigned short int) (x))); \ __v; })) -#else -/* This is better than nothing. */ -static __inline unsigned short int -__bswap_16 (unsigned short int __bsx) -{ - return __bswap_constant_16 (__bsx); -} -#endif - -/* Swap bytes in 32 bit value. */ -#define __bswap_constant_32(x) \ - ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ - (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) - -#if defined __GNUC__ && __GNUC__ >= 2 -# define __bswap_32(x) \ +#define __bswap_non_constant_32(x) \ (__extension__ \ - ({ register unsigned int __v, __x = (x); \ - if (__builtin_constant_p (x)) \ - __v = __bswap_constant_32 (__x); \ - else \ - __asm__ __volatile__ ("shl %0 = %1, 32 ;;" \ - "mux1 %0 = %0, @rev ;;" \ - : "=r" (__v) \ - : "r" ((unsigned int) (__x))); \ + ({ register unsigned int __v; \ + __asm__ __volatile__ ("shl %0 = %1, 32 ;;" \ + "mux1 %0 = %0, @rev ;;" \ + : "=r" (__v) \ + : "r" ((unsigned int) (x))); \ __v; })) -#else -static __inline unsigned int -__bswap_32 (unsigned int __bsx) -{ - return __bswap_constant_32 (__bsx); -} -#endif - -/* Swap bytes in 64 bit value. */ -#define __bswap_constant_64(x) \ - ((((x) & 0xff00000000000000ul) >> 56) \ - | (((x) & 0x00ff000000000000ul) >> 40) \ - | (((x) & 0x0000ff0000000000ul) >> 24) \ - | (((x) & 0x000000ff00000000ul) >> 8) \ - | (((x) & 0x00000000ff000000ul) << 8) \ - | (((x) & 0x0000000000ff0000ul) << 24) \ - | (((x) & 0x000000000000ff00ul) << 40) \ - | (((x) & 0x00000000000000fful) << 56)) - -#if defined __GNUC__ && __GNUC__ >= 2 -# define __bswap_64(x) \ +#define __bswap_non_constant_64(x) \ (__extension__ \ - ({ register unsigned long int __v, __x = (x); \ - if (__builtin_constant_p (x)) \ - __v = __bswap_constant_64 (__x); \ - else \ - __asm__ __volatile__ ("mux1 %0 = %1, @rev ;;" \ - : "=r" (__v) \ - : "r" ((unsigned long int) (__x))); \ + ({ register unsigned long int __v; \ + __asm__ __volatile__ ("mux1 %0 = %1, @rev ;;" \ + : "=r" (__v) \ + : "r" ((unsigned long int) (x))); \ __v; })) +#endif -#else -static __inline unsigned long int -__bswap_64 (unsigned long int __bsx) -{ - return __bswap_constant_64 (__bsx); -} #endif -#endif /* _BITS_BYTESWAP_H */ +#include <bits/byteswap-common.h> |