diff options
Diffstat (limited to 'libc/sysdeps/linux/v850/bits/byteswap.h')
| -rw-r--r-- | libc/sysdeps/linux/v850/bits/byteswap.h | 48 |
1 files changed, 8 insertions, 40 deletions
diff --git a/libc/sysdeps/linux/v850/bits/byteswap.h b/libc/sysdeps/linux/v850/bits/byteswap.h index 44fbee488..b2e1ddb90 100644 --- a/libc/sysdeps/linux/v850/bits/byteswap.h +++ b/libc/sysdeps/linux/v850/bits/byteswap.h @@ -11,53 +11,21 @@ * directory of this archive for more details. */ -#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. */ -#define __bswap_constant_16(x) \ - ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)) +#ifndef _ASM_BITS_BYTESWAP_H +#define _ASM_BITS_BYTESWAP_H 1 -#ifdef __GNUC__ -# define __bswap_16(x) \ +#define __bswap_non_constant_16(x) \ (__extension__ \ ({ unsigned long int __bswap_16_v; \ - if (__builtin_constant_p (x)) \ - __bswap_16_v = __bswap_constant_16 (x); \ - else \ - __asm__ ("bsh %1, %0" : "=r" (__bswap_16_v) : "r" (x)); \ + __asm__ ("bsh %1, %0" : "=r" (__bswap_16_v) : "r" (x)); \ __bswap_16_v; })) -#else -# define __bswap_16(x) __bswap_constant_16 (x) -#endif -/* Swap bytes in 32 bit value. */ -#define __bswap_constant_32(x) \ - ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ - (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) - -#ifdef __GNUC__ -# define __bswap_32(x) \ +# define __bswap_non_constant_32(x) \ (__extension__ \ ({ unsigned long int __bswap_32_v; \ - if (__builtin_constant_p (x)) \ - __bswap_32_v = __bswap_constant_32 (x); \ - else \ - __asm__ ("bsw %1, %0" : "=r" (__bswap_32_v) : "r" (x)); \ + __asm__ ("bsw %1, %0" : "=r" (__bswap_32_v) : "r" (x)); \ __bswap_32_v; })) -#else -# define __bswap_32(x) __bswap_constant_32 (x) -#endif -#if defined __GNUC__ && __GNUC__ >= 2 -/* Swap bytes in 64 bit value. */ -# define __bswap_64(x) \ - (__extension__ \ - ({ union { unsigned long long int __ll; \ - unsigned long int __l[2]; } __bswap_64_v, __bswap_64_r; \ - __bswap_64_v.__ll = (x); \ - __bswap_64_r.__l[0] = __bswap_32 (__bswap_64_v.__l[1]); \ - __bswap_64_r.__l[1] = __bswap_32 (__bswap_64_v.__l[0]); \ - __bswap_64_r.__ll; })) #endif + +#include <bits/byteswap-common.h> |