| endian.h (190854) | endian.h (219819) |
|---|---|
| 1/*- 2 * Copyright (c) 1987, 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 13 unchanged lines hidden (view full) --- 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)endian.h 7.8 (Berkeley) 4/3/91 | 1/*- 2 * Copyright (c) 1987, 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 13 unchanged lines hidden (view full) --- 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)endian.h 7.8 (Berkeley) 4/3/91 |
| 30 * $FreeBSD: head/sys/amd64/include/endian.h 190854 2009-04-08 19:10:20Z ed $ | 30 * $FreeBSD: head/sys/amd64/include/endian.h 219819 2011-03-21 09:40:01Z jeff $ |
| 31 */ 32 33#ifndef _MACHINE_ENDIAN_H_ 34#define _MACHINE_ENDIAN_H_ 35 36#include <sys/cdefs.h> 37#include <sys/_types.h> 38 --- 25 unchanged lines hidden (view full) --- 64#define LITTLE_ENDIAN _LITTLE_ENDIAN 65#define BIG_ENDIAN _BIG_ENDIAN 66#define PDP_ENDIAN _PDP_ENDIAN 67#define BYTE_ORDER _BYTE_ORDER 68#endif 69 70#if defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE_BUILTIN_CONSTANT_P) 71 | 31 */ 32 33#ifndef _MACHINE_ENDIAN_H_ 34#define _MACHINE_ENDIAN_H_ 35 36#include <sys/cdefs.h> 37#include <sys/_types.h> 38 --- 25 unchanged lines hidden (view full) --- 64#define LITTLE_ENDIAN _LITTLE_ENDIAN 65#define BIG_ENDIAN _BIG_ENDIAN 66#define PDP_ENDIAN _PDP_ENDIAN 67#define BYTE_ORDER _BYTE_ORDER 68#endif 69 70#if defined(__GNUCLIKE_ASM) && defined(__GNUCLIKE_BUILTIN_CONSTANT_P) 71 |
| 72#define __byte_swap_int_var(x) \ 73__extension__ ({ register __uint32_t __X = (x); \ 74 __asm ("bswap %0" : "+r" (__X)); \ 75 __X; }) | 72#define __bswap64_const(_x) \ 73 (((_x) >> 56) | \ 74 (((_x) >> 40) & (0xffUL << 8)) | \ 75 (((_x) >> 24) & (0xffUL << 16)) | \ 76 (((_x) >> 8) & (0xffUL << 24)) | \ 77 (((_x) << 8) & (0xffUL << 32)) | \ 78 (((_x) << 24) & (0xffUL << 40)) | \ 79 (((_x) << 40) & (0xffUL << 48)) | \ 80 ((_x) << 56)) |
| 76 | 81 |
| 77#ifdef __OPTIMIZE__ | 82#define __bswap32_const(_x) \ 83 (((_x) >> 24) | \ 84 (((_x) & (0xff << 16)) >> 8) | \ 85 (((_x) & (0xff << 8)) << 8) | \ 86 ((_x) << 24)) |
| 78 | 87 |
| 79#define __byte_swap_int_const(x) \ 80 ((((x) & 0xff000000) >> 24) | \ 81 (((x) & 0x00ff0000) >> 8) | \ 82 (((x) & 0x0000ff00) << 8) | \ 83 (((x) & 0x000000ff) << 24)) 84#define __byte_swap_int(x) (__builtin_constant_p(x) ? \ 85 __byte_swap_int_const(x) : __byte_swap_int_var(x)) | 88#define __bswap16_const(_x) (__uint16_t)((_x) << 8 | (_x) >> 8) |
| 86 | 89 |
| 87#else /* __OPTIMIZE__ */ 88 89#define __byte_swap_int(x) __byte_swap_int_var(x) 90 91#endif /* __OPTIMIZE__ */ 92 93#define __byte_swap_long_var(x) \ 94__extension__ ({ register __uint64_t __X = (x); \ 95 __asm ("bswap %0" : "+r" (__X)); \ 96 __X; }) 97 98#ifdef __OPTIMIZE__ 99 100#define __byte_swap_long_const(x) \ 101 (((x >> 56) | \ 102 ((x >> 40) & 0xff00) | \ 103 ((x >> 24) & 0xff0000) | \ 104 ((x >> 8) & 0xff000000) | \ 105 ((x << 8) & (0xfful << 32)) | \ 106 ((x << 24) & (0xfful << 40)) | \ 107 ((x << 40) & (0xfful << 48)) | \ 108 ((x << 56)))) 109 110#define __byte_swap_long(x) (__builtin_constant_p(x) ? \ 111 __byte_swap_long_const(x) : __byte_swap_long_var(x)) 112 113#else /* __OPTIMIZE__ */ 114 115#define __byte_swap_long(x) __byte_swap_long_var(x) 116 117#endif /* __OPTIMIZE__ */ 118 | |
| 119static __inline __uint64_t | 90static __inline __uint64_t |
| 120__bswap64(__uint64_t _x) | 91__bswap64_var(__uint64_t _x) |
| 121{ 122 | 92{ 93 |
| 123 return (__byte_swap_long(_x)); | 94 __asm ("bswap %0" : "+r" (_x)); 95 return (_x); |
| 124} 125 126static __inline __uint32_t | 96} 97 98static __inline __uint32_t |
| 127__bswap32(__uint32_t _x) | 99__bswap32_var(__uint32_t _x) |
| 128{ 129 | 100{ 101 |
| 130 return (__byte_swap_int(_x)); | 102 __asm ("bswap %0" : "+r" (_x)); 103 return (_x); |
| 131} 132 133static __inline __uint16_t | 104} 105 106static __inline __uint16_t |
| 134__bswap16(__uint16_t _x) | 107__bswap16_var(__uint16_t _x) |
| 135{ | 108{ |
| 136 return (_x << 8 | _x >> 8); | 109 110 return (__bswap16_const(_x)); |
| 137} 138 | 111} 112 |
| 113#define __bswap64(_x) \ 114 (__builtin_constant_p(_x) ? \ 115 __bswap64_const((__uint64_t)(_x)) : __bswap64_var(_x)) 116 117#define __bswap32(_x) \ 118 (__builtin_constant_p(_x) ? \ 119 __bswap32_const((__uint32_t)(_x)) : __bswap32_var(_x)) 120 121#define __bswap16(_x) \ 122 (__builtin_constant_p(_x) ? \ 123 __bswap16_const((__uint16_t)(_x)) : __bswap16_var(_x)) 124 |
|
| 139#define __htonl(x) __bswap32(x) 140#define __htons(x) __bswap16(x) 141#define __ntohl(x) __bswap32(x) 142#define __ntohs(x) __bswap16(x) 143 144#else /* !(__GNUCLIKE_ASM && __GNUCLIKE_BUILTIN_CONSTANT_P) */ 145 146/* --- 13 unchanged lines hidden --- | 125#define __htonl(x) __bswap32(x) 126#define __htons(x) __bswap16(x) 127#define __ntohl(x) __bswap32(x) 128#define __ntohs(x) __bswap16(x) 129 130#else /* !(__GNUCLIKE_ASM && __GNUCLIKE_BUILTIN_CONSTANT_P) */ 131 132/* --- 13 unchanged lines hidden --- |