diff options
Diffstat (limited to 'include/linux/byteorder')
| -rw-r--r-- | include/linux/byteorder/Kbuild | 2 | ||||
| -rw-r--r-- | include/linux/byteorder/big_endian.h | 3 | ||||
| -rw-r--r-- | include/linux/byteorder/little_endian.h | 3 | ||||
| -rw-r--r-- | include/linux/byteorder/swab.h | 222 | ||||
| -rw-r--r-- | include/linux/byteorder/swabb.h | 135 |
5 files changed, 2 insertions, 363 deletions
diff --git a/include/linux/byteorder/Kbuild b/include/linux/byteorder/Kbuild index fbaa7f9cee32..38437225b092 100644 --- a/include/linux/byteorder/Kbuild +++ b/include/linux/byteorder/Kbuild | |||
| @@ -1,4 +1,2 @@ | |||
| 1 | unifdef-y += big_endian.h | 1 | unifdef-y += big_endian.h |
| 2 | unifdef-y += little_endian.h | 2 | unifdef-y += little_endian.h |
| 3 | unifdef-y += swab.h | ||
| 4 | unifdef-y += swabb.h | ||
diff --git a/include/linux/byteorder/big_endian.h b/include/linux/byteorder/big_endian.h index 1cba3f3efe5f..3c80fd7e8b56 100644 --- a/include/linux/byteorder/big_endian.h +++ b/include/linux/byteorder/big_endian.h | |||
| @@ -9,8 +9,7 @@ | |||
| 9 | #endif | 9 | #endif |
| 10 | 10 | ||
| 11 | #include <linux/types.h> | 11 | #include <linux/types.h> |
| 12 | #include <linux/byteorder/swab.h> | 12 | #include <linux/swab.h> |
| 13 | #include <linux/byteorder/swabb.h> | ||
| 14 | 13 | ||
| 15 | #define __constant_htonl(x) ((__force __be32)(__u32)(x)) | 14 | #define __constant_htonl(x) ((__force __be32)(__u32)(x)) |
| 16 | #define __constant_ntohl(x) ((__force __u32)(__be32)(x)) | 15 | #define __constant_ntohl(x) ((__force __u32)(__be32)(x)) |
diff --git a/include/linux/byteorder/little_endian.h b/include/linux/byteorder/little_endian.h index cedc1b5a289c..83195fb82962 100644 --- a/include/linux/byteorder/little_endian.h +++ b/include/linux/byteorder/little_endian.h | |||
| @@ -9,8 +9,7 @@ | |||
| 9 | #endif | 9 | #endif |
| 10 | 10 | ||
| 11 | #include <linux/types.h> | 11 | #include <linux/types.h> |
| 12 | #include <linux/byteorder/swab.h> | 12 | #include <linux/swab.h> |
| 13 | #include <linux/byteorder/swabb.h> | ||
| 14 | 13 | ||
| 15 | #define __constant_htonl(x) ((__force __be32)___constant_swab32((x))) | 14 | #define __constant_htonl(x) ((__force __be32)___constant_swab32((x))) |
| 16 | #define __constant_ntohl(x) ___constant_swab32((__force __be32)(x)) | 15 | #define __constant_ntohl(x) ___constant_swab32((__force __be32)(x)) |
diff --git a/include/linux/byteorder/swab.h b/include/linux/byteorder/swab.h deleted file mode 100644 index 142134ff1645..000000000000 --- a/include/linux/byteorder/swab.h +++ /dev/null | |||
| @@ -1,222 +0,0 @@ | |||
| 1 | #ifndef _LINUX_BYTEORDER_SWAB_H | ||
| 2 | #define _LINUX_BYTEORDER_SWAB_H | ||
| 3 | |||
| 4 | /* | ||
| 5 | * linux/byteorder/swab.h | ||
| 6 | * Byte-swapping, independently from CPU endianness | ||
| 7 | * swabXX[ps]?(foo) | ||
| 8 | * | ||
| 9 | * Francois-Rene Rideau <fare@tunes.org> 19971205 | ||
| 10 | * separated swab functions from cpu_to_XX, | ||
| 11 | * to clean up support for bizarre-endian architectures. | ||
| 12 | * | ||
| 13 | * Trent Piepho <xyzzy@speakeasy.org> 2007114 | ||
| 14 | * make constant-folding work, provide C versions that | ||
| 15 | * gcc can optimize better, explain different versions | ||
| 16 | * | ||
| 17 | * See asm-i386/byteorder.h and suches for examples of how to provide | ||
| 18 | * architecture-dependent optimized versions | ||
| 19 | * | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include <linux/compiler.h> | ||
| 23 | |||
| 24 | /* Functions/macros defined, there are a lot: | ||
| 25 | * | ||
| 26 | * ___swabXX | ||
| 27 | * Generic C versions of the swab functions. | ||
| 28 | * | ||
| 29 | * ___constant_swabXX | ||
| 30 | * C versions that gcc can fold into a compile-time constant when | ||
| 31 | * the argument is a compile-time constant. | ||
| 32 | * | ||
| 33 | * __arch__swabXX[sp]? | ||
| 34 | * Architecture optimized versions of all the swab functions | ||
| 35 | * (including the s and p versions). These can be defined in | ||
| 36 | * asm-arch/byteorder.h. Any which are not, are defined here. | ||
| 37 | * __arch__swabXXs() is defined in terms of __arch__swabXXp(), which | ||
| 38 | * is defined in terms of __arch__swabXX(), which is in turn defined | ||
| 39 | * in terms of ___swabXX(x). | ||
| 40 | * These must be macros. They may be unsafe for arguments with | ||
| 41 | * side-effects. | ||
| 42 | * | ||
| 43 | * __fswabXX | ||
| 44 | * Inline function versions of the __arch__ macros. These _are_ safe | ||
| 45 | * if the arguments have side-effects. Note there are no s and p | ||
| 46 | * versions of these. | ||
| 47 | * | ||
| 48 | * __swabXX[sb] | ||
| 49 | * There are the ones you should actually use. The __swabXX versions | ||
| 50 | * will be a constant given a constant argument and use the arch | ||
| 51 | * specific code (if any) for non-constant arguments. The s and p | ||
| 52 | * versions always use the arch specific code (constant folding | ||
| 53 | * doesn't apply). They are safe to use with arguments with | ||
| 54 | * side-effects. | ||
| 55 | * | ||
| 56 | * swabXX[sb] | ||
| 57 | * Nicknames for __swabXX[sb] to use in the kernel. | ||
| 58 | */ | ||
| 59 | |||
| 60 | /* casts are necessary for constants, because we never know how for sure | ||
| 61 | * how U/UL/ULL map to __u16, __u32, __u64. At least not in a portable way. | ||
| 62 | */ | ||
| 63 | |||
| 64 | static __inline__ __attribute_const__ __u16 ___swab16(__u16 x) | ||
| 65 | { | ||
| 66 | return x<<8 | x>>8; | ||
| 67 | } | ||
| 68 | static __inline__ __attribute_const__ __u32 ___swab32(__u32 x) | ||
| 69 | { | ||
| 70 | return x<<24 | x>>24 | | ||
| 71 | (x & (__u32)0x0000ff00UL)<<8 | | ||
| 72 | (x & (__u32)0x00ff0000UL)>>8; | ||
| 73 | } | ||
| 74 | static __inline__ __attribute_const__ __u64 ___swab64(__u64 x) | ||
| 75 | { | ||
| 76 | return x<<56 | x>>56 | | ||
| 77 | (x & (__u64)0x000000000000ff00ULL)<<40 | | ||
| 78 | (x & (__u64)0x0000000000ff0000ULL)<<24 | | ||
| 79 | (x & (__u64)0x00000000ff000000ULL)<< 8 | | ||
| 80 | (x & (__u64)0x000000ff00000000ULL)>> 8 | | ||
| 81 | (x & (__u64)0x0000ff0000000000ULL)>>24 | | ||
| 82 | (x & (__u64)0x00ff000000000000ULL)>>40; | ||
| 83 | } | ||
| 84 | |||
| 85 | #define ___constant_swab16(x) \ | ||
| 86 | ((__u16)( \ | ||
| 87 | (((__u16)(x) & (__u16)0x00ffU) << 8) | \ | ||
| 88 | (((__u16)(x) & (__u16)0xff00U) >> 8) )) | ||
| 89 | #define ___constant_swab32(x) \ | ||
| 90 | ((__u32)( \ | ||
| 91 | (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \ | ||
| 92 | (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ | ||
| 93 | (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ | ||
| 94 | (((__u32)(x) & (__u32)0xff000000UL) >> 24) )) | ||
| 95 | #define ___constant_swab64(x) \ | ||
| 96 | ((__u64)( \ | ||
| 97 | (__u64)(((__u64)(x) & (__u64)0x00000000000000ffULL) << 56) | \ | ||
| 98 | (__u64)(((__u64)(x) & (__u64)0x000000000000ff00ULL) << 40) | \ | ||
| 99 | (__u64)(((__u64)(x) & (__u64)0x0000000000ff0000ULL) << 24) | \ | ||
| 100 | (__u64)(((__u64)(x) & (__u64)0x00000000ff000000ULL) << 8) | \ | ||
| 101 | (__u64)(((__u64)(x) & (__u64)0x000000ff00000000ULL) >> 8) | \ | ||
| 102 | (__u64)(((__u64)(x) & (__u64)0x0000ff0000000000ULL) >> 24) | \ | ||
| 103 | (__u64)(((__u64)(x) & (__u64)0x00ff000000000000ULL) >> 40) | \ | ||
| 104 | (__u64)(((__u64)(x) & (__u64)0xff00000000000000ULL) >> 56) )) | ||
| 105 | |||
| 106 | /* | ||
| 107 | * provide defaults when no architecture-specific optimization is detected | ||
| 108 | */ | ||
| 109 | #ifndef __arch__swab16 | ||
| 110 | # define __arch__swab16(x) ___swab16(x) | ||
| 111 | #endif | ||
| 112 | #ifndef __arch__swab32 | ||
| 113 | # define __arch__swab32(x) ___swab32(x) | ||
| 114 | #endif | ||
| 115 | #ifndef __arch__swab64 | ||
| 116 | # define __arch__swab64(x) ___swab64(x) | ||
| 117 | #endif | ||
| 118 | |||
| 119 | #ifndef __arch__swab16p | ||
| 120 | # define __arch__swab16p(x) __arch__swab16(*(x)) | ||
| 121 | #endif | ||
| 122 | #ifndef __arch__swab32p | ||
| 123 | # define __arch__swab32p(x) __arch__swab32(*(x)) | ||
| 124 | #endif | ||
| 125 | #ifndef __arch__swab64p | ||
| 126 | # define __arch__swab64p(x) __arch__swab64(*(x)) | ||
| 127 | #endif | ||
| 128 | |||
| 129 | #ifndef __arch__swab16s | ||
| 130 | # define __arch__swab16s(x) ((void)(*(x) = __arch__swab16p(x))) | ||
| 131 | #endif | ||
| 132 | #ifndef __arch__swab32s | ||
| 133 | # define __arch__swab32s(x) ((void)(*(x) = __arch__swab32p(x))) | ||
| 134 | #endif | ||
| 135 | #ifndef __arch__swab64s | ||
| 136 | # define __arch__swab64s(x) ((void)(*(x) = __arch__swab64p(x))) | ||
| 137 | #endif | ||
| 138 | |||
| 139 | |||
| 140 | /* | ||
| 141 | * Allow constant folding | ||
| 142 | */ | ||
| 143 | #if defined(__GNUC__) && defined(__OPTIMIZE__) | ||
| 144 | # define __swab16(x) \ | ||
| 145 | (__builtin_constant_p((__u16)(x)) ? \ | ||
| 146 | ___constant_swab16((x)) : \ | ||
| 147 | __fswab16((x))) | ||
| 148 | # define __swab32(x) \ | ||
| 149 | (__builtin_constant_p((__u32)(x)) ? \ | ||
| 150 | ___constant_swab32((x)) : \ | ||
| 151 | __fswab32((x))) | ||
| 152 | # define __swab64(x) \ | ||
| 153 | (__builtin_constant_p((__u64)(x)) ? \ | ||
| 154 | ___constant_swab64((x)) : \ | ||
| 155 | __fswab64((x))) | ||
| 156 | #else | ||
| 157 | # define __swab16(x) __fswab16(x) | ||
| 158 | # define __swab32(x) __fswab32(x) | ||
| 159 | # define __swab64(x) __fswab64(x) | ||
| 160 | #endif /* OPTIMIZE */ | ||
| 161 | |||
| 162 | |||
| 163 | static __inline__ __attribute_const__ __u16 __fswab16(__u16 x) | ||
| 164 | { | ||
| 165 | return __arch__swab16(x); | ||
| 166 | } | ||
| 167 | static __inline__ __u16 __swab16p(const __u16 *x) | ||
| 168 | { | ||
| 169 | return __arch__swab16p(x); | ||
| 170 | } | ||
| 171 | static __inline__ void __swab16s(__u16 *addr) | ||
| 172 | { | ||
| 173 | __arch__swab16s(addr); | ||
| 174 | } | ||
| 175 | |||
| 176 | static __inline__ __attribute_const__ __u32 __fswab32(__u32 x) | ||
| 177 | { | ||
| 178 | return __arch__swab32(x); | ||
| 179 | } | ||
| 180 | static __inline__ __u32 __swab32p(const __u32 *x) | ||
| 181 | { | ||
| 182 | return __arch__swab32p(x); | ||
| 183 | } | ||
| 184 | static __inline__ void __swab32s(__u32 *addr) | ||
| 185 | { | ||
| 186 | __arch__swab32s(addr); | ||
| 187 | } | ||
| 188 | |||
| 189 | #ifdef __BYTEORDER_HAS_U64__ | ||
| 190 | static __inline__ __attribute_const__ __u64 __fswab64(__u64 x) | ||
| 191 | { | ||
| 192 | # ifdef __SWAB_64_THRU_32__ | ||
| 193 | __u32 h = x >> 32; | ||
| 194 | __u32 l = x & ((1ULL<<32)-1); | ||
| 195 | return (((__u64)__swab32(l)) << 32) | ((__u64)(__swab32(h))); | ||
| 196 | # else | ||
| 197 | return __arch__swab64(x); | ||
| 198 | # endif | ||
| 199 | } | ||
| 200 | static __inline__ __u64 __swab64p(const __u64 *x) | ||
| 201 | { | ||
| 202 | return __arch__swab64p(x); | ||
| 203 | } | ||
| 204 | static __inline__ void __swab64s(__u64 *addr) | ||
| 205 | { | ||
| 206 | __arch__swab64s(addr); | ||
| 207 | } | ||
| 208 | #endif /* __BYTEORDER_HAS_U64__ */ | ||
| 209 | |||
| 210 | #if defined(__KERNEL__) | ||
| 211 | #define swab16 __swab16 | ||
| 212 | #define swab32 __swab32 | ||
| 213 | #define swab64 __swab64 | ||
| 214 | #define swab16p __swab16p | ||
| 215 | #define swab32p __swab32p | ||
| 216 | #define swab64p __swab64p | ||
| 217 | #define swab16s __swab16s | ||
| 218 | #define swab32s __swab32s | ||
| 219 | #define swab64s __swab64s | ||
| 220 | #endif | ||
| 221 | |||
| 222 | #endif /* _LINUX_BYTEORDER_SWAB_H */ | ||
diff --git a/include/linux/byteorder/swabb.h b/include/linux/byteorder/swabb.h deleted file mode 100644 index 8c780c7d779e..000000000000 --- a/include/linux/byteorder/swabb.h +++ /dev/null | |||
| @@ -1,135 +0,0 @@ | |||
| 1 | #ifndef _LINUX_BYTEORDER_SWABB_H | ||
| 2 | #define _LINUX_BYTEORDER_SWABB_H | ||
| 3 | |||
| 4 | /* | ||
| 5 | * linux/byteorder/swabb.h | ||
| 6 | * SWAp Bytes Bizarrely | ||
| 7 | * swaHHXX[ps]?(foo) | ||
| 8 | * | ||
| 9 | * Support for obNUXIous pdp-endian and other bizarre architectures. | ||
| 10 | * Will Linux ever run on such ancient beasts? if not, this file | ||
| 11 | * will be but a programming pearl. Still, it's a reminder that we | ||
| 12 | * shouldn't be making too many assumptions when trying to be portable. | ||
| 13 | * | ||
| 14 | */ | ||
| 15 | |||
| 16 | /* | ||
| 17 | * Meaning of the names I chose (vaxlinux people feel free to correct them): | ||
| 18 | * swahw32 swap 16-bit half-words in a 32-bit word | ||
| 19 | * swahb32 swap 8-bit halves of each 16-bit half-word in a 32-bit word | ||
| 20 | * | ||
| 21 | * No 64-bit support yet. I don't know NUXI conventions for long longs. | ||
| 22 | * I guarantee it will be a mess when it's there, though :-> | ||
| 23 | * It will be even worse if there are conflicting 64-bit conventions. | ||
| 24 | * Hopefully, no one ever used 64-bit objects on NUXI machines. | ||
| 25 | * | ||
| 26 | */ | ||
| 27 | |||
| 28 | #include <linux/types.h> | ||
| 29 | |||
| 30 | #define ___swahw32(x) \ | ||
| 31 | ({ \ | ||
| 32 | __u32 __x = (x); \ | ||
| 33 | ((__u32)( \ | ||
| 34 | (((__u32)(__x) & (__u32)0x0000ffffUL) << 16) | \ | ||
| 35 | (((__u32)(__x) & (__u32)0xffff0000UL) >> 16) )); \ | ||
| 36 | }) | ||
| 37 | #define ___swahb32(x) \ | ||
| 38 | ({ \ | ||
| 39 | __u32 __x = (x); \ | ||
| 40 | ((__u32)( \ | ||
| 41 | (((__u32)(__x) & (__u32)0x00ff00ffUL) << 8) | \ | ||
| 42 | (((__u32)(__x) & (__u32)0xff00ff00UL) >> 8) )); \ | ||
| 43 | }) | ||
| 44 | |||
| 45 | #define ___constant_swahw32(x) \ | ||
| 46 | ((__u32)( \ | ||
| 47 | (((__u32)(x) & (__u32)0x0000ffffUL) << 16) | \ | ||
| 48 | (((__u32)(x) & (__u32)0xffff0000UL) >> 16) )) | ||
| 49 | #define ___constant_swahb32(x) \ | ||
| 50 | ((__u32)( \ | ||
| 51 | (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) | \ | ||
| 52 | (((__u32)(x) & (__u32)0xff00ff00UL) >> 8) )) | ||
| 53 | |||
| 54 | /* | ||
| 55 | * provide defaults when no architecture-specific optimization is detected | ||
| 56 | */ | ||
| 57 | #ifndef __arch__swahw32 | ||
| 58 | # define __arch__swahw32(x) ___swahw32(x) | ||
| 59 | #endif | ||
| 60 | #ifndef __arch__swahb32 | ||
| 61 | # define __arch__swahb32(x) ___swahb32(x) | ||
| 62 | #endif | ||
| 63 | |||
| 64 | #ifndef __arch__swahw32p | ||
| 65 | # define __arch__swahw32p(x) __swahw32(*(x)) | ||
| 66 | #endif | ||
| 67 | #ifndef __arch__swahb32p | ||
| 68 | # define __arch__swahb32p(x) __swahb32(*(x)) | ||
| 69 | #endif | ||
| 70 | |||
| 71 | #ifndef __arch__swahw32s | ||
| 72 | # define __arch__swahw32s(x) do { *(x) = __swahw32p((x)); } while (0) | ||
| 73 | #endif | ||
| 74 | #ifndef __arch__swahb32s | ||
| 75 | # define __arch__swahb32s(x) do { *(x) = __swahb32p((x)); } while (0) | ||
| 76 | #endif | ||
| 77 | |||
| 78 | |||
| 79 | /* | ||
| 80 | * Allow constant folding | ||
| 81 | */ | ||
| 82 | #define __swahw32(x) \ | ||
| 83 | (__builtin_constant_p((__u32)(x)) ? \ | ||
| 84 | ___swahw32((x)) : \ | ||
| 85 | __fswahw32((x))) | ||
| 86 | #define __swahb32(x) \ | ||
| 87 | (__builtin_constant_p((__u32)(x)) ? \ | ||
| 88 | ___swahb32((x)) : \ | ||
| 89 | __fswahb32((x))) | ||
| 90 | |||
| 91 | |||
| 92 | static inline __u32 __fswahw32(__u32 x) | ||
| 93 | { | ||
| 94 | return __arch__swahw32(x); | ||
| 95 | } | ||
| 96 | |||
| 97 | static inline __u32 __swahw32p(__u32 *x) | ||
| 98 | { | ||
| 99 | return __arch__swahw32p(x); | ||
| 100 | } | ||
| 101 | |||
| 102 | static inline void __swahw32s(__u32 *addr) | ||
| 103 | { | ||
| 104 | __arch__swahw32s(addr); | ||
| 105 | } | ||
| 106 | |||
| 107 | static inline __u32 __fswahb32(__u32 x) | ||
| 108 | { | ||
| 109 | return __arch__swahb32(x); | ||
| 110 | } | ||
| 111 | |||
| 112 | static inline __u32 __swahb32p(__u32 *x) | ||
| 113 | { | ||
| 114 | return __arch__swahb32p(x); | ||
| 115 | } | ||
| 116 | |||
| 117 | static inline void __swahb32s(__u32 *addr) | ||
| 118 | { | ||
| 119 | __arch__swahb32s(addr); | ||
| 120 | } | ||
| 121 | |||
| 122 | #ifdef __BYTEORDER_HAS_U64__ | ||
| 123 | /* | ||
| 124 | * Not supported yet | ||
| 125 | */ | ||
| 126 | #endif /* __BYTEORDER_HAS_U64__ */ | ||
| 127 | |||
| 128 | #define swahw32 __swahw32 | ||
| 129 | #define swahb32 __swahb32 | ||
| 130 | #define swahw32p __swahw32p | ||
| 131 | #define swahb32p __swahb32p | ||
| 132 | #define swahw32s __swahw32s | ||
| 133 | #define swahb32s __swahb32s | ||
| 134 | |||
| 135 | #endif /* _LINUX_BYTEORDER_SWABB_H */ | ||
