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)) ? \ | ||
