bellard | ab93bbe | 2003-08-10 21:35:13 +0000 | [diff] [blame] | 1 | #ifndef BSWAP_H |
| 2 | #define BSWAP_H |
| 3 | |
| 4 | #include "config-host.h" |
| 5 | |
| 6 | #include <inttypes.h> |
| 7 | |
| 8 | #ifdef HAVE_BYTESWAP_H |
| 9 | #include <byteswap.h> |
| 10 | #else |
| 11 | |
| 12 | #define bswap_16(x) \ |
| 13 | ({ \ |
| 14 | uint16_t __x = (x); \ |
| 15 | ((uint16_t)( \ |
| 16 | (((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \ |
| 17 | (((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \ |
| 18 | }) |
| 19 | |
| 20 | #define bswap_32(x) \ |
| 21 | ({ \ |
| 22 | uint32_t __x = (x); \ |
| 23 | ((uint32_t)( \ |
| 24 | (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ |
| 25 | (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ |
| 26 | (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ |
| 27 | (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \ |
| 28 | }) |
| 29 | |
| 30 | #define bswap_64(x) \ |
| 31 | ({ \ |
| 32 | uint64_t __x = (x); \ |
| 33 | ((uint64_t)( \ |
| 34 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \ |
| 35 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \ |
| 36 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \ |
| 37 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) << 8) | \ |
| 38 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >> 8) | \ |
| 39 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \ |
| 40 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \ |
| 41 | (uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \ |
| 42 | }) |
| 43 | |
| 44 | #endif /* !HAVE_BYTESWAP_H */ |
| 45 | |
bellard | ab93bbe | 2003-08-10 21:35:13 +0000 | [diff] [blame] | 46 | static inline uint16_t bswap16(uint16_t x) |
| 47 | { |
| 48 | return bswap_16(x); |
| 49 | } |
| 50 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 51 | static inline uint32_t bswap32(uint32_t x) |
bellard | ab93bbe | 2003-08-10 21:35:13 +0000 | [diff] [blame] | 52 | { |
| 53 | return bswap_32(x); |
| 54 | } |
| 55 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 56 | static inline uint64_t bswap64(uint64_t x) |
bellard | ab93bbe | 2003-08-10 21:35:13 +0000 | [diff] [blame] | 57 | { |
| 58 | return bswap_64(x); |
| 59 | } |
| 60 | |
| 61 | static inline void bswap16s(uint16_t *s) |
| 62 | { |
| 63 | *s = bswap16(*s); |
| 64 | } |
| 65 | |
| 66 | static inline void bswap32s(uint32_t *s) |
| 67 | { |
| 68 | *s = bswap32(*s); |
| 69 | } |
| 70 | |
| 71 | static inline void bswap64s(uint64_t *s) |
| 72 | { |
| 73 | *s = bswap64(*s); |
| 74 | } |
| 75 | |
bellard | af8ffdf | 2004-08-01 21:48:12 +0000 | [diff] [blame] | 76 | #if defined(WORDS_BIGENDIAN) |
| 77 | #define be_bswap(v, size) (v) |
| 78 | #define le_bswap(v, size) bswap ## size(v) |
| 79 | #define be_bswaps(v, size) |
| 80 | #define le_bswaps(p, size) *p = bswap ## size(*p); |
| 81 | #else |
| 82 | #define le_bswap(v, size) (v) |
| 83 | #define be_bswap(v, size) bswap ## size(v) |
| 84 | #define le_bswaps(v, size) |
| 85 | #define be_bswaps(p, size) *p = bswap ## size(*p); |
| 86 | #endif |
| 87 | |
| 88 | #define CPU_CONVERT(endian, size, type)\ |
| 89 | static inline type endian ## size ## _to_cpu(type v)\ |
| 90 | {\ |
| 91 | return endian ## _bswap(v, size);\ |
| 92 | }\ |
| 93 | \ |
| 94 | static inline type cpu_to_ ## endian ## size(type v)\ |
| 95 | {\ |
| 96 | return endian ## _bswap(v, size);\ |
| 97 | }\ |
| 98 | \ |
| 99 | static inline void endian ## size ## _to_cpus(type *p)\ |
| 100 | {\ |
| 101 | endian ## _bswaps(p, size)\ |
| 102 | }\ |
| 103 | \ |
| 104 | static inline void cpu_to_ ## endian ## size ## s(type *p)\ |
| 105 | {\ |
| 106 | endian ## _bswaps(p, size)\ |
| 107 | }\ |
| 108 | \ |
| 109 | static inline type endian ## size ## _to_cpup(const type *p)\ |
| 110 | {\ |
| 111 | return endian ## size ## _to_cpu(*p);\ |
| 112 | }\ |
| 113 | \ |
| 114 | static inline void cpu_to_ ## endian ## size ## w(type *p, type v)\ |
| 115 | {\ |
| 116 | *p = cpu_to_ ## endian ## size(v);\ |
| 117 | } |
| 118 | |
| 119 | CPU_CONVERT(be, 16, uint16_t) |
| 120 | CPU_CONVERT(be, 32, uint32_t) |
| 121 | CPU_CONVERT(be, 64, uint64_t) |
| 122 | |
| 123 | CPU_CONVERT(le, 16, uint16_t) |
| 124 | CPU_CONVERT(le, 32, uint32_t) |
| 125 | CPU_CONVERT(le, 64, uint64_t) |
| 126 | |
| 127 | /* unaligned versions (optimized for frequent unaligned accesses)*/ |
| 128 | |
| 129 | #if defined(__i386__) || defined(__powerpc__) |
| 130 | |
| 131 | #define cpu_to_le16wu(p, v) cpu_to_le16w(p, v) |
| 132 | #define cpu_to_le32wu(p, v) cpu_to_le32w(p, v) |
| 133 | #define le16_to_cpupu(p) le16_to_cpup(p) |
| 134 | #define le32_to_cpupu(p) le32_to_cpup(p) |
aurel32 | 88738c0 | 2008-03-28 22:30:48 +0000 | [diff] [blame] | 135 | #define be32_to_cpupu(p) be32_to_cpup(p) |
bellard | af8ffdf | 2004-08-01 21:48:12 +0000 | [diff] [blame] | 136 | |
bellard | 188d857 | 2004-10-10 15:44:19 +0000 | [diff] [blame] | 137 | #define cpu_to_be16wu(p, v) cpu_to_be16w(p, v) |
| 138 | #define cpu_to_be32wu(p, v) cpu_to_be32w(p, v) |
| 139 | |
bellard | af8ffdf | 2004-08-01 21:48:12 +0000 | [diff] [blame] | 140 | #else |
| 141 | |
| 142 | static inline void cpu_to_le16wu(uint16_t *p, uint16_t v) |
| 143 | { |
| 144 | uint8_t *p1 = (uint8_t *)p; |
| 145 | |
| 146 | p1[0] = v; |
| 147 | p1[1] = v >> 8; |
| 148 | } |
| 149 | |
| 150 | static inline void cpu_to_le32wu(uint32_t *p, uint32_t v) |
| 151 | { |
| 152 | uint8_t *p1 = (uint8_t *)p; |
| 153 | |
| 154 | p1[0] = v; |
| 155 | p1[1] = v >> 8; |
| 156 | p1[2] = v >> 16; |
| 157 | p1[3] = v >> 24; |
| 158 | } |
| 159 | |
| 160 | static inline uint16_t le16_to_cpupu(const uint16_t *p) |
| 161 | { |
| 162 | const uint8_t *p1 = (const uint8_t *)p; |
| 163 | return p1[0] | (p1[1] << 8); |
| 164 | } |
| 165 | |
| 166 | static inline uint32_t le32_to_cpupu(const uint32_t *p) |
| 167 | { |
| 168 | const uint8_t *p1 = (const uint8_t *)p; |
| 169 | return p1[0] | (p1[1] << 8) | (p1[2] << 16) | (p1[3] << 24); |
| 170 | } |
| 171 | |
aurel32 | 88738c0 | 2008-03-28 22:30:48 +0000 | [diff] [blame] | 172 | static inline uint32_t be32_to_cpupu(const uint32_t *p) |
| 173 | { |
| 174 | const uint8_t *p1 = (const uint8_t *)p; |
| 175 | return p1[3] | (p1[2] << 8) | (p1[1] << 16) | (p1[0] << 24); |
| 176 | } |
| 177 | |
bellard | 188d857 | 2004-10-10 15:44:19 +0000 | [diff] [blame] | 178 | static inline void cpu_to_be16wu(uint16_t *p, uint16_t v) |
| 179 | { |
| 180 | uint8_t *p1 = (uint8_t *)p; |
| 181 | |
| 182 | p1[0] = v >> 8; |
| 183 | p1[1] = v; |
| 184 | } |
| 185 | |
| 186 | static inline void cpu_to_be32wu(uint32_t *p, uint32_t v) |
| 187 | { |
| 188 | uint8_t *p1 = (uint8_t *)p; |
| 189 | |
| 190 | p1[0] = v >> 24; |
| 191 | p1[1] = v >> 16; |
| 192 | p1[2] = v >> 8; |
| 193 | p1[3] = v; |
| 194 | } |
| 195 | |
| 196 | #endif |
| 197 | |
| 198 | #ifdef WORDS_BIGENDIAN |
| 199 | #define cpu_to_32wu cpu_to_be32wu |
| 200 | #else |
| 201 | #define cpu_to_32wu cpu_to_le32wu |
bellard | af8ffdf | 2004-08-01 21:48:12 +0000 | [diff] [blame] | 202 | #endif |
| 203 | |
| 204 | #undef le_bswap |
| 205 | #undef be_bswap |
| 206 | #undef le_bswaps |
| 207 | #undef be_bswaps |
| 208 | |
bellard | ab93bbe | 2003-08-10 21:35:13 +0000 | [diff] [blame] | 209 | #endif /* BSWAP_H */ |