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40 | |
40 | |
41 | #ifndef ECB_H |
41 | #ifndef ECB_H |
42 | #define ECB_H |
42 | #define ECB_H |
43 | |
43 | |
44 | /* 16 bits major, 16 bits minor */ |
44 | /* 16 bits major, 16 bits minor */ |
45 | #define ECB_VERSION 0x00010005 |
45 | #define ECB_VERSION 0x00010008 |
46 | |
46 | |
47 | #ifdef _WIN32 |
47 | #ifdef _WIN32 |
48 | typedef signed char int8_t; |
48 | typedef signed char int8_t; |
49 | typedef unsigned char uint8_t; |
49 | typedef unsigned char uint8_t; |
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50 | typedef signed char int_fast8_t; |
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51 | typedef unsigned char uint_fast8_t; |
50 | typedef signed short int16_t; |
52 | typedef signed short int16_t; |
51 | typedef unsigned short uint16_t; |
53 | typedef unsigned short uint16_t; |
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54 | typedef signed int int_fast16_t; |
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55 | typedef unsigned int uint_fast16_t; |
52 | typedef signed int int32_t; |
56 | typedef signed int int32_t; |
53 | typedef unsigned int uint32_t; |
57 | typedef unsigned int uint32_t; |
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58 | typedef signed int int_fast32_t; |
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59 | typedef unsigned int uint_fast32_t; |
54 | #if __GNUC__ |
60 | #if __GNUC__ |
55 | typedef signed long long int64_t; |
61 | typedef signed long long int64_t; |
56 | typedef unsigned long long uint64_t; |
62 | typedef unsigned long long uint64_t; |
57 | #else /* _MSC_VER || __BORLANDC__ */ |
63 | #else /* _MSC_VER || __BORLANDC__ */ |
58 | typedef signed __int64 int64_t; |
64 | typedef signed __int64 int64_t; |
59 | typedef unsigned __int64 uint64_t; |
65 | typedef unsigned __int64 uint64_t; |
60 | #endif |
66 | #endif |
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67 | typedef int64_t int_fast64_t; |
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68 | typedef uint64_t uint_fast64_t; |
61 | #ifdef _WIN64 |
69 | #ifdef _WIN64 |
62 | #define ECB_PTRSIZE 8 |
70 | #define ECB_PTRSIZE 8 |
63 | typedef uint64_t uintptr_t; |
71 | typedef uint64_t uintptr_t; |
64 | typedef int64_t intptr_t; |
72 | typedef int64_t intptr_t; |
65 | #else |
73 | #else |
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… | |
67 | typedef uint32_t uintptr_t; |
75 | typedef uint32_t uintptr_t; |
68 | typedef int32_t intptr_t; |
76 | typedef int32_t intptr_t; |
69 | #endif |
77 | #endif |
70 | #else |
78 | #else |
71 | #include <inttypes.h> |
79 | #include <inttypes.h> |
72 | #if UINTMAX_MAX > 0xffffffffU |
80 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
73 | #define ECB_PTRSIZE 8 |
81 | #define ECB_PTRSIZE 8 |
74 | #else |
82 | #else |
75 | #define ECB_PTRSIZE 4 |
83 | #define ECB_PTRSIZE 4 |
76 | #endif |
84 | #endif |
77 | #endif |
85 | #endif |
78 | |
86 | |
79 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
87 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
80 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
88 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
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89 | |
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90 | #ifndef ECB_OPTIMIZE_SIZE |
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91 | #if __OPTIMIZE_SIZE__ |
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92 | #define ECB_OPTIMIZE_SIZE 1 |
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93 | #else |
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94 | #define ECB_OPTIMIZE_SIZE 0 |
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95 | #endif |
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96 | #endif |
81 | |
97 | |
82 | /* work around x32 idiocy by defining proper macros */ |
98 | /* work around x32 idiocy by defining proper macros */ |
83 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
99 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
84 | #if _ILP32 |
100 | #if _ILP32 |
85 | #define ECB_AMD64_X32 1 |
101 | #define ECB_AMD64_X32 1 |
… | |
… | |
115 | #define ECB_CLANG_EXTENSION(x) 0 |
131 | #define ECB_CLANG_EXTENSION(x) 0 |
116 | #endif |
132 | #endif |
117 | |
133 | |
118 | #define ECB_CPP (__cplusplus+0) |
134 | #define ECB_CPP (__cplusplus+0) |
119 | #define ECB_CPP11 (__cplusplus >= 201103L) |
135 | #define ECB_CPP11 (__cplusplus >= 201103L) |
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136 | #define ECB_CPP14 (__cplusplus >= 201402L) |
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137 | #define ECB_CPP17 (__cplusplus >= 201703L) |
120 | |
138 | |
121 | #if ECB_CPP |
139 | #if ECB_CPP |
122 | #define ECB_C 0 |
140 | #define ECB_C 0 |
123 | #define ECB_STDC_VERSION 0 |
141 | #define ECB_STDC_VERSION 0 |
124 | #else |
142 | #else |
… | |
… | |
126 | #define ECB_STDC_VERSION __STDC_VERSION__ |
144 | #define ECB_STDC_VERSION __STDC_VERSION__ |
127 | #endif |
145 | #endif |
128 | |
146 | |
129 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
147 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
130 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
148 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
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149 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
131 | |
150 | |
132 | #if ECB_CPP |
151 | #if ECB_CPP |
133 | #define ECB_EXTERN_C extern "C" |
152 | #define ECB_EXTERN_C extern "C" |
134 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
153 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
135 | #define ECB_EXTERN_C_END } |
154 | #define ECB_EXTERN_C_END } |
… | |
… | |
155 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
174 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
156 | #if __xlC__ && ECB_CPP |
175 | #if __xlC__ && ECB_CPP |
157 | #include <builtins.h> |
176 | #include <builtins.h> |
158 | #endif |
177 | #endif |
159 | |
178 | |
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179 | #if 1400 <= _MSC_VER |
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180 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
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181 | #endif |
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182 | |
160 | #ifndef ECB_MEMORY_FENCE |
183 | #ifndef ECB_MEMORY_FENCE |
161 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
184 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
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185 | #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory") |
162 | #if __i386 || __i386__ |
186 | #if __i386 || __i386__ |
163 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
187 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
164 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
188 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
165 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
189 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
166 | #elif ECB_GCC_AMD64 |
190 | #elif ECB_GCC_AMD64 |
167 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
191 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
168 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
192 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
169 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
193 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
170 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
194 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
171 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
195 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
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196 | #elif defined __ARM_ARCH_2__ \ |
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197 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
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198 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
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199 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
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200 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
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201 | || defined __ARM_ARCH_5TEJ__ |
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202 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
172 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
203 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
173 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
204 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
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205 | || defined __ARM_ARCH_6T2__ |
174 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
206 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
175 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
207 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
176 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
208 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
177 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
209 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
178 | #elif __aarch64__ |
210 | #elif __aarch64__ |
179 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
211 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
180 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
212 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
181 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
213 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
… | |
… | |
208 | #if ECB_GCC_VERSION(4,7) |
240 | #if ECB_GCC_VERSION(4,7) |
209 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
241 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
210 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
242 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
211 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
243 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
212 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
244 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
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245 | #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED) |
213 | |
246 | |
214 | #elif ECB_CLANG_EXTENSION(c_atomic) |
247 | #elif ECB_CLANG_EXTENSION(c_atomic) |
215 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
248 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
216 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
249 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
217 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
250 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
218 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
251 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
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252 | #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED) |
219 | |
253 | |
220 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
254 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
221 | #define ECB_MEMORY_FENCE __sync_synchronize () |
255 | #define ECB_MEMORY_FENCE __sync_synchronize () |
222 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
256 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
223 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
257 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
… | |
… | |
233 | #elif defined _WIN32 |
267 | #elif defined _WIN32 |
234 | #include <WinNT.h> |
268 | #include <WinNT.h> |
235 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
269 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
236 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
270 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
237 | #include <mbarrier.h> |
271 | #include <mbarrier.h> |
238 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
272 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
239 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
273 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier () |
240 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
274 | #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier () |
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275 | #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier () |
241 | #elif __xlC__ |
276 | #elif __xlC__ |
242 | #define ECB_MEMORY_FENCE __sync () |
277 | #define ECB_MEMORY_FENCE __sync () |
243 | #endif |
278 | #endif |
244 | #endif |
279 | #endif |
245 | |
280 | |
246 | #ifndef ECB_MEMORY_FENCE |
281 | #ifndef ECB_MEMORY_FENCE |
247 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
282 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
248 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
283 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
249 | /* not just C11 atomics and atomic accesses */ |
284 | /* not just C11 atomics and atomic accesses */ |
250 | #include <stdatomic.h> |
285 | #include <stdatomic.h> |
251 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
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252 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
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253 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
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254 | /* for most usages, or gcc and clang have a bug */ |
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255 | /* I *currently* lean towards the latter, and inefficiently implement */ |
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256 | /* all three of ecb's fences as a seq_cst fence */ |
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257 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
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258 | /* for all __atomic_thread_fence's except seq_cst */ |
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259 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
286 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
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287 | #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire) |
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288 | #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release) |
260 | #endif |
289 | #endif |
261 | #endif |
290 | #endif |
262 | |
291 | |
263 | #ifndef ECB_MEMORY_FENCE |
292 | #ifndef ECB_MEMORY_FENCE |
264 | #if !ECB_AVOID_PTHREADS |
293 | #if !ECB_AVOID_PTHREADS |
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… | |
284 | |
313 | |
285 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
314 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
286 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
315 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
287 | #endif |
316 | #endif |
288 | |
317 | |
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318 | #if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE |
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319 | #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */ |
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320 | #endif |
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321 | |
289 | /*****************************************************************************/ |
322 | /*****************************************************************************/ |
290 | |
323 | |
291 | #if ECB_CPP |
324 | #if ECB_CPP |
292 | #define ecb_inline static inline |
325 | #define ecb_inline static inline |
293 | #elif ECB_GCC_VERSION(2,5) |
326 | #elif ECB_GCC_VERSION(2,5) |
… | |
… | |
423 | #else |
456 | #else |
424 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
457 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
425 | ecb_function_ ecb_const int |
458 | ecb_function_ ecb_const int |
426 | ecb_ctz32 (uint32_t x) |
459 | ecb_ctz32 (uint32_t x) |
427 | { |
460 | { |
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461 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
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462 | unsigned long r; |
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463 | _BitScanForward (&r, x); |
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464 | return (int)r; |
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465 | #else |
428 | int r = 0; |
466 | int r = 0; |
429 | |
467 | |
430 | x &= ~x + 1; /* this isolates the lowest bit */ |
468 | x &= ~x + 1; /* this isolates the lowest bit */ |
431 | |
469 | |
432 | #if ECB_branchless_on_i386 |
470 | #if ECB_branchless_on_i386 |
… | |
… | |
442 | if (x & 0xff00ff00) r += 8; |
480 | if (x & 0xff00ff00) r += 8; |
443 | if (x & 0xffff0000) r += 16; |
481 | if (x & 0xffff0000) r += 16; |
444 | #endif |
482 | #endif |
445 | |
483 | |
446 | return r; |
484 | return r; |
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485 | #endif |
447 | } |
486 | } |
448 | |
487 | |
449 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
488 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
450 | ecb_function_ ecb_const int |
489 | ecb_function_ ecb_const int |
451 | ecb_ctz64 (uint64_t x) |
490 | ecb_ctz64 (uint64_t x) |
452 | { |
491 | { |
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492 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
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493 | unsigned long r; |
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494 | _BitScanForward64 (&r, x); |
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495 | return (int)r; |
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496 | #else |
453 | int shift = x & 0xffffffffU ? 0 : 32; |
497 | int shift = x & 0xffffffff ? 0 : 32; |
454 | return ecb_ctz32 (x >> shift) + shift; |
498 | return ecb_ctz32 (x >> shift) + shift; |
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499 | #endif |
455 | } |
500 | } |
456 | |
501 | |
457 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
502 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
458 | ecb_function_ ecb_const int |
503 | ecb_function_ ecb_const int |
459 | ecb_popcount32 (uint32_t x) |
504 | ecb_popcount32 (uint32_t x) |
… | |
… | |
467 | } |
512 | } |
468 | |
513 | |
469 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
514 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
470 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
515 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
471 | { |
516 | { |
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517 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
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518 | unsigned long r; |
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519 | _BitScanReverse (&r, x); |
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520 | return (int)r; |
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521 | #else |
472 | int r = 0; |
522 | int r = 0; |
473 | |
523 | |
474 | if (x >> 16) { x >>= 16; r += 16; } |
524 | if (x >> 16) { x >>= 16; r += 16; } |
475 | if (x >> 8) { x >>= 8; r += 8; } |
525 | if (x >> 8) { x >>= 8; r += 8; } |
476 | if (x >> 4) { x >>= 4; r += 4; } |
526 | if (x >> 4) { x >>= 4; r += 4; } |
477 | if (x >> 2) { x >>= 2; r += 2; } |
527 | if (x >> 2) { x >>= 2; r += 2; } |
478 | if (x >> 1) { r += 1; } |
528 | if (x >> 1) { r += 1; } |
479 | |
529 | |
480 | return r; |
530 | return r; |
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531 | #endif |
481 | } |
532 | } |
482 | |
533 | |
483 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
534 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
484 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
535 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
485 | { |
536 | { |
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537 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
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538 | unsigned long r; |
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539 | _BitScanReverse64 (&r, x); |
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|
540 | return (int)r; |
|
|
541 | #else |
486 | int r = 0; |
542 | int r = 0; |
487 | |
543 | |
488 | if (x >> 32) { x >>= 32; r += 32; } |
544 | if (x >> 32) { x >>= 32; r += 32; } |
489 | |
545 | |
490 | return r + ecb_ld32 (x); |
546 | return r + ecb_ld32 (x); |
|
|
547 | #endif |
491 | } |
548 | } |
492 | #endif |
549 | #endif |
493 | |
550 | |
494 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
551 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
495 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
552 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
… | |
… | |
598 | #endif |
655 | #endif |
599 | |
656 | |
600 | /* try to tell the compiler that some condition is definitely true */ |
657 | /* try to tell the compiler that some condition is definitely true */ |
601 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
658 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
602 | |
659 | |
603 | ecb_inline ecb_const unsigned char ecb_byteorder_helper (void); |
660 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
604 | ecb_inline ecb_const unsigned char |
661 | ecb_inline ecb_const uint32_t |
605 | ecb_byteorder_helper (void) |
662 | ecb_byteorder_helper (void) |
606 | { |
663 | { |
607 | /* the union code still generates code under pressure in gcc, */ |
664 | /* the union code still generates code under pressure in gcc, */ |
608 | /* but less than using pointers, and always seems to */ |
665 | /* but less than using pointers, and always seems to */ |
609 | /* successfully return a constant. */ |
666 | /* successfully return a constant. */ |
610 | /* the reason why we have this horrible preprocessor mess */ |
667 | /* the reason why we have this horrible preprocessor mess */ |
611 | /* is to avoid it in all cases, at least on common architectures */ |
668 | /* is to avoid it in all cases, at least on common architectures */ |
612 | /* or when using a recent enough gcc version (>= 4.6) */ |
669 | /* or when using a recent enough gcc version (>= 4.6) */ |
613 | #if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
614 | return 0x44; |
|
|
615 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
670 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
671 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
672 | #define ECB_LITTLE_ENDIAN 1 |
616 | return 0x44; |
673 | return 0x44332211; |
617 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
674 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
675 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
676 | #define ECB_BIG_ENDIAN 1 |
618 | return 0x11; |
677 | return 0x11223344; |
619 | #else |
678 | #else |
620 | union |
679 | union |
621 | { |
680 | { |
|
|
681 | uint8_t c[4]; |
622 | uint32_t i; |
682 | uint32_t u; |
623 | uint8_t c; |
|
|
624 | } u = { 0x11223344 }; |
683 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
625 | return u.c; |
684 | return u.u; |
626 | #endif |
685 | #endif |
627 | } |
686 | } |
628 | |
687 | |
629 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
688 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
630 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
689 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
631 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
690 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
632 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
691 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
692 | |
|
|
693 | /*****************************************************************************/ |
|
|
694 | /* unaligned load/store */ |
|
|
695 | |
|
|
696 | ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
697 | ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
698 | ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
699 | |
|
|
700 | ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
701 | ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
702 | ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
703 | |
|
|
704 | ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
705 | ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
706 | ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
707 | |
|
|
708 | ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
709 | ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
710 | ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
711 | |
|
|
712 | ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
713 | ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
714 | ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
715 | |
|
|
716 | ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
717 | ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
718 | ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
719 | |
|
|
720 | ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
721 | ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
722 | ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
723 | |
|
|
724 | ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
725 | ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
726 | ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
727 | |
|
|
728 | ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); } |
|
|
729 | ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); } |
|
|
730 | ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); } |
|
|
731 | |
|
|
732 | ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); } |
|
|
733 | ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); } |
|
|
734 | ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); } |
|
|
735 | |
|
|
736 | #ifdef ECB_CPP |
|
|
737 | |
|
|
738 | inline uint8_t ecb_bswap (uint8_t v) { return v; } |
|
|
739 | inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); } |
|
|
740 | inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); } |
|
|
741 | inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); } |
|
|
742 | |
|
|
743 | template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
744 | template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
745 | template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; } |
|
|
746 | template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); } |
|
|
747 | template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); } |
|
|
748 | template<typename T> inline T ecb_peek_u (const void *ptr) { T v; std::memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
749 | template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); } |
|
|
750 | template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); } |
|
|
751 | |
|
|
752 | template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
753 | template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
754 | template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; } |
|
|
755 | template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); } |
|
|
756 | template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); } |
|
|
757 | template<typename T> inline void ecb_poke_u (void *ptr, T v) { std::memcpy (ptr, &v, sizeof (v)); } |
|
|
758 | template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); } |
|
|
759 | template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); } |
|
|
760 | |
|
|
761 | #endif |
|
|
762 | |
|
|
763 | /*****************************************************************************/ |
633 | |
764 | |
634 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
765 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
635 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
766 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
636 | #else |
767 | #else |
637 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
768 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
… | |
… | |
662 | } |
793 | } |
663 | #else |
794 | #else |
664 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
795 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
665 | #endif |
796 | #endif |
666 | |
797 | |
|
|
798 | /*****************************************************************************/ |
|
|
799 | |
667 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint16_t x); |
800 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
668 | ecb_function_ ecb_const uint32_t |
801 | ecb_function_ ecb_const uint32_t |
669 | ecb_binary16_to_binary32 (uint16_t x) |
802 | ecb_binary16_to_binary32 (uint32_t x) |
670 | { |
803 | { |
671 | unsigned int s = (x & 0x8000) << (31 - 15); |
804 | unsigned int s = (x & 0x8000) << (31 - 15); |
672 | int e = (x >> 10) & 0x001f; |
805 | int e = (x >> 10) & 0x001f; |
673 | unsigned int m = x & 0x03ff; |
806 | unsigned int m = x & 0x03ff; |
674 | |
807 | |
… | |
… | |
724 | |
857 | |
725 | /* handle large numbers and infinity */ |
858 | /* handle large numbers and infinity */ |
726 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
859 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
727 | return s | 0x7c00; |
860 | return s | 0x7c00; |
728 | |
861 | |
729 | /* handle zero and subnormals */ |
862 | /* handle zero, subnormals and small numbers */ |
730 | if (ecb_expect_true (x < 0x38800000)) |
863 | if (ecb_expect_true (x < 0x38800000)) |
731 | { |
864 | { |
732 | /* zero */ |
865 | /* zero */ |
733 | if (ecb_expect_true (!x)) |
866 | if (ecb_expect_true (!x)) |
734 | return s; |
867 | return s; |
735 | |
868 | |
736 | /* handle subnormals */ |
869 | /* handle subnormals */ |
|
|
870 | |
|
|
871 | /* too small, will be zero */ |
|
|
872 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
873 | return s; |
737 | |
874 | |
738 | m |= 0x00800000; /* make implicit bit explicit */ |
875 | m |= 0x00800000; /* make implicit bit explicit */ |
739 | |
876 | |
740 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
877 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
741 | { |
878 | { |