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38 | typedef signed int int32_t; |
38 | typedef signed int int32_t; |
39 | typedef unsigned int uint32_t; |
39 | typedef unsigned int uint32_t; |
40 | #if __GNUC__ |
40 | #if __GNUC__ |
41 | typedef signed long long int64_t; |
41 | typedef signed long long int64_t; |
42 | typedef unsigned long long uint64_t; |
42 | typedef unsigned long long uint64_t; |
43 | #else |
43 | #else /* _MSC_VER || __BORLANDC__ */ |
44 | typedef signed __int64 int64_t; |
44 | typedef signed __int64 int64_t; |
45 | typedef unsigned __int64 uint64_t; |
45 | typedef unsigned __int64 uint64_t; |
46 | #endif |
46 | #endif |
47 | #else |
47 | #else |
48 | #include <inttypes.h> |
48 | #include <inttypes.h> |
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61 | #else |
61 | #else |
62 | #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))) |
63 | #endif |
63 | #endif |
64 | #endif |
64 | #endif |
65 | |
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; or.b $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 |
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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) && defined(MemoryBarrier) |
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92 | #define ECB_MEMORY_FENCE MemoryBarrier () |
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93 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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94 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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95 | #endif |
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96 | #endif |
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97 | |
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98 | #ifndef ECB_MEMORY_FENCE |
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99 | #include <pthread.h> |
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100 | |
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101 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
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102 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
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103 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
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104 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
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105 | #endif |
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106 | |
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107 | /*****************************************************************************/ |
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108 | |
66 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
109 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
67 | |
110 | |
68 | #if __cplusplus |
111 | #if __cplusplus |
69 | #define ecb_inline static inline |
112 | #define ecb_inline static inline |
70 | #elif ECB_GCC_VERSION(2,5) |
113 | #elif ECB_GCC_VERSION(2,5) |
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152 | { |
195 | { |
153 | int r = 0; |
196 | int r = 0; |
154 | |
197 | |
155 | x &= ~x + 1; /* this isolates the lowest bit */ |
198 | x &= ~x + 1; /* this isolates the lowest bit */ |
156 | |
199 | |
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200 | #if ECB_branchless_on_i386 |
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201 | r += !!(x & 0xaaaaaaaa) << 0; |
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202 | r += !!(x & 0xcccccccc) << 1; |
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203 | r += !!(x & 0xf0f0f0f0) << 2; |
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204 | r += !!(x & 0xff00ff00) << 3; |
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205 | r += !!(x & 0xffff0000) << 4; |
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206 | #else |
157 | if (x & 0xaaaaaaaa) r += 1; |
207 | if (x & 0xaaaaaaaa) r += 1; |
158 | if (x & 0xcccccccc) r += 2; |
208 | if (x & 0xcccccccc) r += 2; |
159 | if (x & 0xf0f0f0f0) r += 4; |
209 | if (x & 0xf0f0f0f0) r += 4; |
160 | if (x & 0xff00ff00) r += 8; |
210 | if (x & 0xff00ff00) r += 8; |
161 | if (x & 0xffff0000) r += 16; |
211 | if (x & 0xffff0000) r += 16; |
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212 | #endif |
162 | |
213 | |
163 | return r; |
214 | return r; |
164 | } |
215 | } |
165 | |
216 | |
166 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
217 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
167 | ecb_function_ int |
218 | ecb_function_ int |
168 | ecb_ctz64 (uint64_t x) |
219 | ecb_ctz64 (uint64_t x) |
169 | { |
220 | { |
170 | int shift = x & 0xffffffffU ? 0 : 32; |
221 | int shift = x & 0xffffffffU ? 0 : 32; |
171 | return ecb_ctz (x >> shift) + shift; |
222 | return ecb_ctz32 (x >> shift) + shift; |
172 | } |
223 | } |
173 | |
224 | |
174 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
225 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
175 | ecb_function_ int |
226 | ecb_function_ int |
176 | ecb_popcount32 (uint32_t x) |
227 | ecb_popcount32 (uint32_t x) |
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187 | /* something using lots of bit arithmetic and a simple loop */ |
238 | /* something using lots of bit arithmetic and a simple loop */ |
188 | /* we went for the loop */ |
239 | /* we went for the loop */ |
189 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
240 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
190 | ecb_function_ int ecb_ld32 (uint32_t x) |
241 | ecb_function_ int ecb_ld32 (uint32_t x) |
191 | { |
242 | { |
192 | int r = -1; |
243 | int r = 0; |
193 | |
244 | |
194 | do |
245 | if (x >> 16) { x >>= 16; r += 16; } |
195 | { |
246 | if (x >> 8) { x >>= 8; r += 8; } |
196 | x >>= 1; |
247 | if (x >> 4) { x >>= 4; r += 4; } |
197 | ++r; |
248 | if (x >> 2) { x >>= 2; r += 2; } |
198 | } |
249 | if (x >> 1) { r += 1; } |
199 | while (x); |
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200 | |
250 | |
201 | return r; |
251 | return r; |
202 | } |
252 | } |
203 | |
253 | |
204 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
254 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
205 | ecb_function_ int ecb_ld64 (uint64_t x) |
255 | ecb_function_ int ecb_ld64 (uint64_t x) |
206 | { |
256 | { |
207 | int r = -1; |
257 | int r = 0; |
208 | |
258 | |
209 | do |
259 | if (x >> 32) { x >>= 32; r += 32; } |
210 | { |
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211 | x >>= 1; |
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212 | ++r; |
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213 | } |
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214 | while (x); |
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215 | |
260 | |
216 | return r; |
261 | return r + ecb_ld32 (x); |
217 | } |
262 | } |
218 | #endif |
263 | #endif |
219 | |
264 | |
220 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
265 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
221 | /* so for this version we are lazy */ |
266 | /* so for this version we are lazy */ |
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224 | ecb_popcount64 (uint64_t x) |
269 | ecb_popcount64 (uint64_t x) |
225 | { |
270 | { |
226 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
271 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
227 | } |
272 | } |
228 | |
273 | |
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274 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
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275 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
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276 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
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277 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
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278 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
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279 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
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280 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
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281 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
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282 | |
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283 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
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284 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
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285 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
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286 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
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287 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
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288 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
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289 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
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290 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
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291 | |
229 | #if ECB_GCC_VERSION(4,3) |
292 | #if ECB_GCC_VERSION(4,3) |
230 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
293 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
231 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
294 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
232 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
295 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
233 | #else |
296 | #else |
234 | ecb_function_ uint32_t ecb_bswap16 (uint32_t x) ecb_const; |
297 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
235 | ecb_function_ uint32_t |
298 | ecb_function_ uint16_t |
236 | ecb_bswap16 (uint32_t x) |
299 | ecb_bswap16 (uint16_t x) |
237 | { |
300 | { |
238 | return ((x >> 8) & 0xff) |
301 | return ecb_rotl16 (x, 8); |
239 | | ((x << 8) & 0x00ff0000) |
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240 | | (x << 24); |
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241 | } |
302 | } |
242 | |
303 | |
243 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
304 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
244 | ecb_function_ uint32_t |
305 | ecb_function_ uint32_t |
245 | ecb_bswap32 (uint32_t x) |
306 | ecb_bswap32 (uint32_t x) |
246 | { |
307 | { |
247 | return (x >> 24) |
308 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
248 | | ((x >> 8) & 0x0000ff00) |
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249 | | ((x << 8) & 0x00ff0000) |
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250 | | (x << 24); |
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251 | } |
309 | } |
252 | |
310 | |
253 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
311 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
254 | ecb_function_ uint64_t |
312 | ecb_function_ uint64_t |
255 | ecb_bswap64 (uint64_t x) |
313 | ecb_bswap64 (uint64_t x) |
256 | { |
314 | { |
257 | return (((uint64_t)ecb_bswap32 (x)) << 32) |
315 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
258 | | ecb_bswap32 (x >> 32); |
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259 | } |
316 | } |
260 | #endif |
317 | #endif |
261 | |
318 | |
262 | #if ECB_GCC_VERSION(4,5) |
319 | #if ECB_GCC_VERSION(4,5) |
263 | #define ecb_unreachable() __builtin_unreachable () |
320 | #define ecb_unreachable() __builtin_unreachable () |
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298 | } |
355 | } |
299 | #else |
356 | #else |
300 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
357 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
301 | #endif |
358 | #endif |
302 | |
359 | |
303 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
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304 | ecb_inline uint32_t |
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305 | ecb_rotr32 (uint32_t x, unsigned int count) |
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306 | { |
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307 | return (x << (32 - count)) | (x >> count); |
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308 | } |
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309 | |
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310 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
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311 | ecb_inline uint32_t |
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312 | ecb_rotl32 (uint32_t x, unsigned int count) |
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313 | { |
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314 | return (x >> (32 - count)) | (x << count); |
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315 | } |
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316 | |
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317 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
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318 | ecb_inline uint64_t |
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319 | ecb_rotr64 (uint64_t x, unsigned int count) |
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320 | { |
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321 | return (x << (64 - count)) | (x >> count); |
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322 | } |
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323 | |
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324 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
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325 | ecb_inline uint64_t |
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326 | ecb_rotl64 (uint64_t x, unsigned int count) |
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327 | { |
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328 | return (x >> (64 - count)) | (x << count); |
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329 | } |
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330 | |
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331 | #endif |
360 | #endif |
332 | |
361 | |