1 /* 2 * This header was generated from the Linux kernel headers by update_headers.py, 3 * to provide necessary information from kernel to userspace, such as constants, 4 * structures, and macros, and thus, contains no copyrightable information. 5 */ 6 #ifndef _UAPI_LINUX_SWAB_H 7 #define _UAPI_LINUX_SWAB_H 8 #include <linux/types.h> 9 #include <linux/compiler.h> 10 #include <asm/bitsperlong.h> 11 #include <asm/swab.h> 12 #define ___constant_swab16(x) ((__u16)( \ 13 (((__u16)(x) & (__u16)0x00ffU) << 8) | \ 14 (((__u16)(x) & (__u16)0xff00U) >> 8))) 15 #define ___constant_swab32(x) ((__u32)( \ 16 (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \ 17 (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ 18 (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ 19 (((__u32)(x) & (__u32)0xff000000UL) >> 24))) 20 #define ___constant_swab64(x) ((__u64)( \ 21 (((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) | \ 22 (((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) | \ 23 (((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) | \ 24 (((__u64)(x) & (__u64)0x00000000ff000000ULL) << 8) | \ 25 (((__u64)(x) & (__u64)0x000000ff00000000ULL) >> 8) | \ 26 (((__u64)(x) & (__u64)0x0000ff0000000000ULL) >> 24) | \ 27 (((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) | \ 28 (((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56))) 29 #define ___constant_swahw32(x) ((__u32)( \ 30 (((__u32)(x) & (__u32)0x0000ffffUL) << 16) | \ 31 (((__u32)(x) & (__u32)0xffff0000UL) >> 16))) 32 #define ___constant_swahb32(x) ((__u32)( \ 33 (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) | \ 34 (((__u32)(x) & (__u32)0xff00ff00UL) >> 8))) __fswab16(__u16 val)35static inline __attribute_const__ __u16 __fswab16(__u16 val) 36 { 37 #if defined (__arch_swab16) 38 return __arch_swab16(val); 39 #else 40 return ___constant_swab16(val); 41 #endif 42 } __fswab32(__u32 val)43static inline __attribute_const__ __u32 __fswab32(__u32 val) 44 { 45 #if defined(__arch_swab32) 46 return __arch_swab32(val); 47 #else 48 return ___constant_swab32(val); 49 #endif 50 } __fswab64(__u64 val)51static inline __attribute_const__ __u64 __fswab64(__u64 val) 52 { 53 #if defined (__arch_swab64) 54 return __arch_swab64(val); 55 #elif defined(__SWAB_64_THRU_32__) 56 __u32 h = val >> 32; 57 __u32 l = val & ((1ULL << 32) - 1); 58 return (((__u64)__fswab32(l)) << 32) | ((__u64)(__fswab32(h))); 59 #else 60 return ___constant_swab64(val); 61 #endif 62 } __fswahw32(__u32 val)63static inline __attribute_const__ __u32 __fswahw32(__u32 val) 64 { 65 #ifdef __arch_swahw32 66 return __arch_swahw32(val); 67 #else 68 return ___constant_swahw32(val); 69 #endif 70 } __fswahb32(__u32 val)71static inline __attribute_const__ __u32 __fswahb32(__u32 val) 72 { 73 #ifdef __arch_swahb32 74 return __arch_swahb32(val); 75 #else 76 return ___constant_swahb32(val); 77 #endif 78 } 79 #if 1 80 #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) 81 #else 82 #define __swab16(x) \ 83 (__builtin_constant_p((__u16)(x)) ? \ 84 ___constant_swab16(x) : \ 85 __fswab16(x)) 86 #endif 87 #if 1 88 #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) 89 #else 90 #define __swab32(x) \ 91 (__builtin_constant_p((__u32)(x)) ? \ 92 ___constant_swab32(x) : \ 93 __fswab32(x)) 94 #endif 95 #if 1 96 #define __swab64(x) (__u64)__builtin_bswap64((__u64)(x)) 97 #else 98 #define __swab64(x) \ 99 (__builtin_constant_p((__u64)(x)) ? \ 100 ___constant_swab64(x) : \ 101 __fswab64(x)) 102 #endif __swab(const unsigned long y)103static __always_inline unsigned long __swab(const unsigned long y) 104 { 105 #if __BITS_PER_LONG == 64 106 return __swab64(y); 107 #else 108 return __swab32(y); 109 #endif 110 } 111 #define __swahw32(x) \ 112 (__builtin_constant_p((__u32)(x)) ? \ 113 ___constant_swahw32(x) : \ 114 __fswahw32(x)) 115 #define __swahb32(x) \ 116 (__builtin_constant_p((__u32)(x)) ? \ 117 ___constant_swahb32(x) : \ 118 __fswahb32(x)) __swab16p(const __u16 * p)119static __always_inline __u16 __swab16p(const __u16 *p) 120 { 121 #ifdef __arch_swab16p 122 return __arch_swab16p(p); 123 #else 124 return __swab16(*p); 125 #endif 126 } __swab32p(const __u32 * p)127static __always_inline __u32 __swab32p(const __u32 *p) 128 { 129 #ifdef __arch_swab32p 130 return __arch_swab32p(p); 131 #else 132 return __swab32(*p); 133 #endif 134 } __swab64p(const __u64 * p)135static __always_inline __u64 __swab64p(const __u64 *p) 136 { 137 #ifdef __arch_swab64p 138 return __arch_swab64p(p); 139 #else 140 return __swab64(*p); 141 #endif 142 } __swahw32p(const __u32 * p)143static inline __u32 __swahw32p(const __u32 *p) 144 { 145 #ifdef __arch_swahw32p 146 return __arch_swahw32p(p); 147 #else 148 return __swahw32(*p); 149 #endif 150 } __swahb32p(const __u32 * p)151static inline __u32 __swahb32p(const __u32 *p) 152 { 153 #ifdef __arch_swahb32p 154 return __arch_swahb32p(p); 155 #else 156 return __swahb32(*p); 157 #endif 158 } __swab16s(__u16 * p)159static inline void __swab16s(__u16 *p) 160 { 161 #ifdef __arch_swab16s 162 __arch_swab16s(p); 163 #else 164 *p = __swab16p(p); 165 #endif 166 } __swab32s(__u32 * p)167static __always_inline void __swab32s(__u32 *p) 168 { 169 #ifdef __arch_swab32s 170 __arch_swab32s(p); 171 #else 172 *p = __swab32p(p); 173 #endif 174 } __swab64s(__u64 * p)175static __always_inline void __swab64s(__u64 *p) 176 { 177 #ifdef __arch_swab64s 178 __arch_swab64s(p); 179 #else 180 *p = __swab64p(p); 181 #endif 182 } __swahw32s(__u32 * p)183static inline void __swahw32s(__u32 *p) 184 { 185 #ifdef __arch_swahw32s 186 __arch_swahw32s(p); 187 #else 188 *p = __swahw32p(p); 189 #endif 190 } __swahb32s(__u32 * p)191static inline void __swahb32s(__u32 *p) 192 { 193 #ifdef __arch_swahb32s 194 __arch_swahb32s(p); 195 #else 196 *p = __swahb32p(p); 197 #endif 198 } 199 #endif 200