… | |
… | |
28 | */ |
28 | */ |
29 | |
29 | |
30 | #ifndef ECB_H |
30 | #ifndef ECB_H |
31 | #define ECB_H |
31 | #define ECB_H |
32 | |
32 | |
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33 | #ifdef _WIN32 |
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34 | typedef signed char int8_t; |
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35 | typedef unsigned char uint8_t; |
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36 | typedef signed short int16_t; |
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37 | typedef unsigned short uint16_t; |
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38 | typedef signed int int32_t; |
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39 | typedef unsigned int uint32_t; |
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40 | #if __GNUC__ |
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41 | typedef signed long long int64_t; |
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42 | typedef unsigned long long uint64_t; |
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43 | #else /* _MSC_VER || __BORLANDC__ */ |
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44 | typedef signed __int64 int64_t; |
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45 | typedef unsigned __int64 uint64_t; |
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46 | #endif |
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47 | #else |
33 | #include <inttypes.h> |
48 | #include <inttypes.h> |
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49 | #endif |
34 | |
50 | |
35 | /* many compilers define _GNUC_ to some versions but then only implement |
51 | /* many compilers define _GNUC_ to some versions but then only implement |
36 | * what their idiot authors think are the "more important" extensions, |
52 | * what their idiot authors think are the "more important" extensions, |
37 | * causing enourmous grief in return for some better fake benchmark numbers. |
53 | * causing enourmous grief in return for some better fake benchmark numbers. |
38 | * or so. |
54 | * or so. |
39 | * we try to detect these and simply assume they are not gcc - if they have |
55 | * we try to detect these and simply assume they are not gcc - if they have |
40 | * an issue with that they should have done it right in the first place. |
56 | * an issue with that they should have done it right in the first place. |
41 | */ |
57 | */ |
42 | #ifndef ECB_GCC_VERSION |
58 | #ifndef ECB_GCC_VERSION |
43 | #if defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__llvm__) |
59 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
44 | #define ECB_GCC_VERSION(major,minor) 0 |
60 | #define ECB_GCC_VERSION(major,minor) 0 |
45 | #else |
61 | #else |
46 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
62 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
47 | #endif |
63 | #endif |
48 | #endif |
64 | #endif |
49 | |
65 | |
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66 | /*****************************************************************************/ |
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67 | |
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68 | #ifndef ECB_MEMORY_FENCE |
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69 | #if ECB_GCC_VERSION(2,5) |
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70 | #if __x86 |
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71 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
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72 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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73 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ |
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74 | #elif __amd64 |
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75 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
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76 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
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77 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") |
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78 | #endif |
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79 | #endif |
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80 | #endif |
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81 | |
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82 | #ifndef ECB_MEMORY_FENCE |
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83 | #if ECB_GCC_VERSION(4,4) |
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84 | #define ECB_MEMORY_FENCE __sync_synchronize () |
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85 | #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) |
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86 | #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) |
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87 | #elif _MSC_VER >= 1400 && 0 /* TODO: only true when using volatiles */ |
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88 | #define ECB_MEMORY_FENCE do { } while (0) |
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89 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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90 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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91 | #elif defined(_WIN32) |
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92 | #include <WinNT.h> |
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93 | #define ECB_MEMORY_FENCE MemoryBarrier () |
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94 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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95 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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96 | #endif |
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97 | #endif |
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98 | |
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99 | #ifndef ECB_MEMORY_FENCE |
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100 | #include <pthread.h> |
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101 | |
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102 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
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103 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
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104 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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105 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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106 | #endif |
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107 | |
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108 | /*****************************************************************************/ |
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109 | |
50 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
110 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
51 | |
111 | |
52 | #if __cplusplus |
112 | #if __cplusplus |
53 | #define ECB_INLINE static inline |
113 | #define ecb_inline static inline |
54 | #elif ECB_GCC_VERSION(2,5) |
114 | #elif ECB_GCC_VERSION(2,5) |
55 | #define ECB_INLINE static __inline__ |
115 | #define ecb_inline static __inline__ |
56 | #elif ECB_C99 |
116 | #elif ECB_C99 |
57 | #define ECB_INLINE static inline |
117 | #define ecb_inline static inline |
58 | #else |
118 | #else |
59 | #define ECB_INLINE static |
119 | #define ecb_inline static |
60 | #endif |
120 | #endif |
61 | |
121 | |
62 | #if ECB_GCC_VERSION(3,3) |
122 | #if ECB_GCC_VERSION(3,3) |
63 | #define ecb_restrict __restrict__ |
123 | #define ecb_restrict __restrict__ |
64 | #elif ECB_C99 |
124 | #elif ECB_C99 |
… | |
… | |
72 | #define ECB_CONCAT_(a, b) a ## b |
132 | #define ECB_CONCAT_(a, b) a ## b |
73 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
133 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
74 | #define ECB_STRINGIFY_(a) # a |
134 | #define ECB_STRINGIFY_(a) # a |
75 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
135 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
76 | |
136 | |
77 | #define ecb_function_ ECB_INLINE |
137 | #define ecb_function_ ecb_inline |
78 | |
138 | |
79 | #if ECB_GCC_VERSION(3,1) |
139 | #if ECB_GCC_VERSION(3,1) |
80 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
140 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
81 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
141 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
82 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
142 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
… | |
… | |
120 | #define ecb_likely(expr) ecb_expect_true (expr) |
180 | #define ecb_likely(expr) ecb_expect_true (expr) |
121 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
181 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
122 | |
182 | |
123 | /* count trailing zero bits and count # of one bits */ |
183 | /* count trailing zero bits and count # of one bits */ |
124 | #if ECB_GCC_VERSION(3,4) |
184 | #if ECB_GCC_VERSION(3,4) |
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185 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
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186 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
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187 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
125 | #define ecb_ctz32(x) __builtin_ctz (x) |
188 | #define ecb_ctz32(x) __builtin_ctz (x) |
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189 | #define ecb_ctz64(x) __builtin_ctzll (x) |
126 | #define ecb_popcount32(x) __builtin_popcount (x) |
190 | #define ecb_popcount32(x) __builtin_popcount (x) |
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191 | /* no popcountll */ |
127 | #else |
192 | #else |
128 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
193 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
129 | ecb_function_ int |
194 | ecb_function_ int |
130 | ecb_ctz32 (uint32_t x) |
195 | ecb_ctz32 (uint32_t x) |
131 | { |
196 | { |
132 | int r = 0; |
197 | int r = 0; |
133 | |
198 | |
134 | x &= -x; /* this isolates the lowest bit */ |
199 | x &= ~x + 1; /* this isolates the lowest bit */ |
135 | |
200 | |
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201 | #if ECB_branchless_on_i386 |
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202 | r += !!(x & 0xaaaaaaaa) << 0; |
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203 | r += !!(x & 0xcccccccc) << 1; |
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204 | r += !!(x & 0xf0f0f0f0) << 2; |
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205 | r += !!(x & 0xff00ff00) << 3; |
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206 | r += !!(x & 0xffff0000) << 4; |
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207 | #else |
136 | if (x & 0xaaaaaaaa) r += 1; |
208 | if (x & 0xaaaaaaaa) r += 1; |
137 | if (x & 0xcccccccc) r += 2; |
209 | if (x & 0xcccccccc) r += 2; |
138 | if (x & 0xf0f0f0f0) r += 4; |
210 | if (x & 0xf0f0f0f0) r += 4; |
139 | if (x & 0xff00ff00) r += 8; |
211 | if (x & 0xff00ff00) r += 8; |
140 | if (x & 0xffff0000) r += 16; |
212 | if (x & 0xffff0000) r += 16; |
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213 | #endif |
141 | |
214 | |
142 | return r; |
215 | return r; |
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216 | } |
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217 | |
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218 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
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219 | ecb_function_ int |
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220 | ecb_ctz64 (uint64_t x) |
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221 | { |
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222 | int shift = x & 0xffffffffU ? 0 : 32; |
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223 | return ecb_ctz32 (x >> shift) + shift; |
143 | } |
224 | } |
144 | |
225 | |
145 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
226 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
146 | ecb_function_ int |
227 | ecb_function_ int |
147 | ecb_popcount32 (uint32_t x) |
228 | ecb_popcount32 (uint32_t x) |
… | |
… | |
151 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
232 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
152 | x *= 0x01010101; |
233 | x *= 0x01010101; |
153 | |
234 | |
154 | return x >> 24; |
235 | return x >> 24; |
155 | } |
236 | } |
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237 | |
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238 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
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239 | ecb_function_ int ecb_ld32 (uint32_t x) |
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240 | { |
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241 | int r = 0; |
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242 | |
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243 | if (x >> 16) { x >>= 16; r += 16; } |
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244 | if (x >> 8) { x >>= 8; r += 8; } |
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245 | if (x >> 4) { x >>= 4; r += 4; } |
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246 | if (x >> 2) { x >>= 2; r += 2; } |
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247 | if (x >> 1) { r += 1; } |
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248 | |
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249 | return r; |
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250 | } |
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251 | |
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252 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
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253 | ecb_function_ int ecb_ld64 (uint64_t x) |
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254 | { |
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255 | int r = 0; |
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256 | |
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257 | if (x >> 32) { x >>= 32; r += 32; } |
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258 | |
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259 | return r + ecb_ld32 (x); |
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260 | } |
156 | #endif |
261 | #endif |
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262 | |
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263 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
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264 | /* so for this version we are lazy */ |
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265 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
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266 | ecb_function_ int |
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267 | ecb_popcount64 (uint64_t x) |
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268 | { |
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269 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
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270 | } |
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271 | |
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272 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
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273 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
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274 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
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275 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
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276 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
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277 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
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278 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
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279 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
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280 | |
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281 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
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282 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
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283 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
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284 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
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285 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
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286 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
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287 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
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288 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
157 | |
289 | |
158 | #if ECB_GCC_VERSION(4,3) |
290 | #if ECB_GCC_VERSION(4,3) |
159 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
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160 | #define ecb_bswap16(x) (__builtin_bswap32(x) >> 16) |
291 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
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292 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
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293 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
161 | #else |
294 | #else |
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295 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
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296 | ecb_function_ uint16_t |
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297 | ecb_bswap16 (uint16_t x) |
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298 | { |
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299 | return ecb_rotl16 (x, 8); |
|
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300 | } |
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301 | |
162 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
302 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
163 | ecb_function_ uint32_t |
303 | ecb_function_ uint32_t |
164 | ecb_bswap32 (uint32_t x) |
304 | ecb_bswap32 (uint32_t x) |
165 | { |
305 | { |
166 | return (x >> 24) |
306 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
167 | | ((x >> 8) & 0x0000ff00) |
|
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168 | | ((x << 8) & 0x00ff0000) |
|
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169 | | (x << 24); |
|
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170 | } |
307 | } |
171 | |
308 | |
172 | ecb_function_ uint32_t ecb_bswap16 (uint32_t x) ecb_const; |
309 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
173 | ecb_function_ uint32_t |
310 | ecb_function_ uint64_t |
174 | ecb_bswap16 (uint32_t x) |
311 | ecb_bswap64 (uint64_t x) |
175 | { |
312 | { |
176 | return ((x >> 8) & 0xff) |
313 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
177 | | ((x << 8) & 0x00ff0000) |
|
|
178 | | (x << 24); |
|
|
179 | } |
314 | } |
180 | #endif |
315 | #endif |
181 | |
316 | |
182 | #if ECB_GCC_VERSION(4,5) |
317 | #if ECB_GCC_VERSION(4,5) |
183 | #define ecb_unreachable() __builtin_unreachable () |
318 | #define ecb_unreachable() __builtin_unreachable () |
… | |
… | |
197 | const uint32_t u = 0x11223344; |
332 | const uint32_t u = 0x11223344; |
198 | return *(unsigned char *)&u; |
333 | return *(unsigned char *)&u; |
199 | } |
334 | } |
200 | |
335 | |
201 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
336 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
202 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }; |
337 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
203 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
338 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
204 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }; |
339 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
205 | |
340 | |
206 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
341 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
207 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
342 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
208 | #else |
343 | #else |
209 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
344 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
… | |
… | |
218 | } |
353 | } |
219 | #else |
354 | #else |
220 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
355 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
221 | #endif |
356 | #endif |
222 | |
357 | |
223 | ECB_INLINE uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
224 | ECB_INLINE uint32_t |
|
|
225 | ecb_rotr32 (uint32_t x, unsigned int count) |
|
|
226 | { |
|
|
227 | return (x << (32 - count)) | (x >> count); |
|
|
228 | } |
|
|
229 | |
|
|
230 | ECB_INLINE uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
231 | ECB_INLINE uint32_t |
|
|
232 | ecb_rotl32 (uint32_t x, unsigned int count) |
|
|
233 | { |
|
|
234 | return (x >> (32 - count)) | (x << count); |
|
|
235 | } |
|
|
236 | |
|
|
237 | #endif |
358 | #endif |
238 | |
359 | |