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23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | * |
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29 | * Alternatively, the contents of this file may be used under the terms of |
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30 | * the GNU General Public License ("GPL") version 2 or any later version, |
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31 | * in which case the provisions of the GPL are applicable instead of |
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32 | * the above. If you wish to allow the use of your version of this file |
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33 | * only under the terms of the GPL and not to allow others to use your |
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34 | * version of this file under the BSD license, indicate your decision |
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35 | * by deleting the provisions above and replace them with the notice |
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36 | * and other provisions required by the GPL. If you do not delete the |
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37 | * provisions above, a recipient may use your version of this file under |
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38 | * either the BSD or the GPL. |
28 | */ |
39 | */ |
29 | |
40 | |
30 | #ifndef ECB_H |
41 | #ifndef ECB_H |
31 | #define ECB_H |
42 | #define ECB_H |
32 | |
43 | |
33 | /* 16 bits major, 16 bits minor */ |
44 | /* 16 bits major, 16 bits minor */ |
34 | #define ECB_VERSION 0x00010003 |
45 | #define ECB_VERSION 0x00010004 |
35 | |
46 | |
36 | #ifdef _WIN32 |
47 | #ifdef _WIN32 |
37 | typedef signed char int8_t; |
48 | typedef signed char int8_t; |
38 | typedef unsigned char uint8_t; |
49 | typedef unsigned char uint8_t; |
39 | typedef signed short int16_t; |
50 | typedef signed short int16_t; |
… | |
… | |
79 | * causing enormous grief in return for some better fake benchmark numbers. |
90 | * causing enormous grief in return for some better fake benchmark numbers. |
80 | * or so. |
91 | * or so. |
81 | * we try to detect these and simply assume they are not gcc - if they have |
92 | * we try to detect these and simply assume they are not gcc - if they have |
82 | * an issue with that they should have done it right in the first place. |
93 | * an issue with that they should have done it right in the first place. |
83 | */ |
94 | */ |
84 | #ifndef ECB_GCC_VERSION |
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85 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
95 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
86 | #define ECB_GCC_VERSION(major,minor) 0 |
96 | #define ECB_GCC_VERSION(major,minor) 0 |
87 | #else |
97 | #else |
88 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
98 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
89 | #endif |
99 | #endif |
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100 | |
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101 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
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102 | |
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103 | #if __clang__ && defined(__has_builtin) |
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104 | #define ECB_CLANG_BUILTIN(x) __has_builtin(x) |
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105 | #else |
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106 | #define ECB_CLANG_BUILTIN(x) 0 |
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107 | #endif |
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108 | |
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109 | #if __clang__ && defined(__has_extension) |
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110 | #define ECB_CLANG_EXTENSION(x) __has_extension(x) |
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111 | #else |
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112 | #define ECB_CLANG_EXTENSION(x) 0 |
90 | #endif |
113 | #endif |
91 | |
114 | |
92 | #define ECB_CPP (__cplusplus+0) |
115 | #define ECB_CPP (__cplusplus+0) |
93 | #define ECB_CPP11 (__cplusplus >= 201103L) |
116 | #define ECB_CPP11 (__cplusplus >= 201103L) |
94 | |
117 | |
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178 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
201 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
179 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
202 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
180 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
203 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
181 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
204 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
182 | |
205 | |
183 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
206 | #elif ECB_CLANG_EXTENSION(c_atomic) |
184 | * without risking compile time errors with other compilers. We *could* |
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185 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
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186 | * around this shit time and again. |
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187 | * #elif defined __clang && __has_feature (cxx_atomic) |
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188 | * // see comment below (stdatomic.h) about the C11 memory model. |
207 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
189 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
208 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
190 | * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
209 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
191 | * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
210 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
192 | */ |
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193 | |
211 | |
194 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
212 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
195 | #define ECB_MEMORY_FENCE __sync_synchronize () |
213 | #define ECB_MEMORY_FENCE __sync_synchronize () |
196 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
214 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
197 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
215 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
… | |
… | |
287 | #define ECB_STRINGIFY_(a) # a |
305 | #define ECB_STRINGIFY_(a) # a |
288 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
306 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
289 | |
307 | |
290 | #define ecb_function_ ecb_inline |
308 | #define ecb_function_ ecb_inline |
291 | |
309 | |
292 | #if ECB_GCC_VERSION(3,1) |
310 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
293 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
311 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
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312 | #else |
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313 | #define ecb_attribute(attrlist) |
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314 | #endif |
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315 | |
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316 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
294 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
317 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
295 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
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296 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
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297 | #else |
318 | #else |
298 | #define ecb_attribute(attrlist) |
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299 | |
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300 | /* possible C11 impl for integral types |
319 | /* possible C11 impl for integral types |
301 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
320 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
302 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
321 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
303 | |
322 | |
304 | #define ecb_is_constant(expr) 0 |
323 | #define ecb_is_constant(expr) 0 |
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324 | #endif |
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325 | |
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326 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
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327 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
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328 | #else |
305 | #define ecb_expect(expr,value) (expr) |
329 | #define ecb_expect(expr,value) (expr) |
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330 | #endif |
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331 | |
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332 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
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333 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
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334 | #else |
306 | #define ecb_prefetch(addr,rw,locality) |
335 | #define ecb_prefetch(addr,rw,locality) |
307 | #endif |
336 | #endif |
308 | |
337 | |
309 | /* no emulation for ecb_decltype */ |
338 | /* no emulation for ecb_decltype */ |
310 | #if ECB_GCC_VERSION(4,5) |
339 | #if ECB_CPP11 |
311 | #define ecb_decltype(x) __decltype(x) |
340 | #define ecb_decltype(x) decltype (x) |
312 | #elif ECB_GCC_VERSION(3,0) |
341 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
313 | #define ecb_decltype(x) __typeof(x) |
342 | #define ecb_decltype(x) __typeof__ (x) |
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343 | #endif |
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344 | |
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345 | #if _MSC_VER >= 1300 |
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346 | #define ecb_deprecated __declspec(deprecated) |
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347 | #else |
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348 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
314 | #endif |
349 | #endif |
315 | |
350 | |
316 | #define ecb_noinline ecb_attribute ((__noinline__)) |
351 | #define ecb_noinline ecb_attribute ((__noinline__)) |
317 | #define ecb_unused ecb_attribute ((__unused__)) |
352 | #define ecb_unused ecb_attribute ((__unused__)) |
318 | #define ecb_const ecb_attribute ((__const__)) |
353 | #define ecb_const ecb_attribute ((__const__)) |
319 | #define ecb_pure ecb_attribute ((__pure__)) |
354 | #define ecb_pure ecb_attribute ((__pure__)) |
320 | |
355 | |
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356 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ |
321 | #if ECB_C11 |
357 | #if ECB_C11 |
322 | #define ecb_noreturn _Noreturn |
358 | #define ecb_noreturn _Noreturn |
323 | #else |
359 | #else |
324 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
360 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
325 | #endif |
361 | #endif |
… | |
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342 | /* for compatibility to the rest of the world */ |
378 | /* for compatibility to the rest of the world */ |
343 | #define ecb_likely(expr) ecb_expect_true (expr) |
379 | #define ecb_likely(expr) ecb_expect_true (expr) |
344 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
380 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
345 | |
381 | |
346 | /* count trailing zero bits and count # of one bits */ |
382 | /* count trailing zero bits and count # of one bits */ |
347 | #if ECB_GCC_VERSION(3,4) |
383 | #if ECB_GCC_VERSION(3,4) \ |
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384 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
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385 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
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386 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
348 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
387 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
349 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
388 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
350 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
389 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
351 | #define ecb_ctz32(x) __builtin_ctz (x) |
390 | #define ecb_ctz32(x) __builtin_ctz (x) |
352 | #define ecb_ctz64(x) __builtin_ctzll (x) |
391 | #define ecb_ctz64(x) __builtin_ctzll (x) |
… | |
… | |
483 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
522 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
484 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
523 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
485 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
524 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
486 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
525 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
487 | |
526 | |
488 | #if ECB_GCC_VERSION(4,3) |
527 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
489 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
528 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
490 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
529 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
491 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
530 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
492 | #else |
531 | #else |
493 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
532 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
… | |
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510 | { |
549 | { |
511 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
550 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
512 | } |
551 | } |
513 | #endif |
552 | #endif |
514 | |
553 | |
515 | #if ECB_GCC_VERSION(4,5) |
554 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
516 | #define ecb_unreachable() __builtin_unreachable () |
555 | #define ecb_unreachable() __builtin_unreachable () |
517 | #else |
556 | #else |
518 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
557 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
519 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
558 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
520 | ecb_inline void ecb_unreachable (void) { } |
559 | ecb_inline void ecb_unreachable (void) { } |