diff options
Diffstat (limited to 'sysdeps/m68k/bits/byteswap.h')
| -rw-r--r-- | sysdeps/m68k/bits/byteswap.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/sysdeps/m68k/bits/byteswap.h b/sysdeps/m68k/bits/byteswap.h index 54ec0d1..41bbe59 100644 --- a/sysdeps/m68k/bits/byteswap.h +++ b/sysdeps/m68k/bits/byteswap.h @@ -17,8 +17,9 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef _BITS_BYTESWAP_H -#define _BITS_BYTESWAP_H 1 +#if !defined _BYTESWAP_H && !defined _NETINET_IN_H +# error "Never use <bits/byteswap.h> directly; include <byteswap.h> instead." +#endif /* Swap bytes in 16 bit value. We don't provide an assembler version because GCC is smart enough to generate optimal assembler output, and @@ -32,7 +33,7 @@ (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) #if defined __GNUC__ && __GNUC__ >= 2 -#define __bswap_32(x) \ +# define __bswap_32(x) \ __extension__ \ ({ unsigned int __v; \ if (__builtin_constant_p (x)) \ @@ -45,12 +46,12 @@ : "0" (x)); \ __v; }) #else -#define __bswap_32(x) __bswap_constant_32 (x) +# define __bswap_32(x) __bswap_constant_32 (x) #endif #if defined __GNUC__ && __GNUC__ >= 2 /* Swap bytes in 64 bit value. */ -#define __bswap_64(x) \ +# define __bswap_64(x) \ __extension__ \ ({ union { unsigned long long int __ll; \ unsigned long int __l[2]; } __v, __r; \ @@ -59,5 +60,3 @@ __r.__l[1] = __bswap_32 (__v.__l[0]); \ __r.__ll; }) #endif - -#endif /* bits/byteswap.h */ |