… | |
… | |
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 | /* 16 bits major, 16 bits minor */ |
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34 | #define ECB_VERSION 0x00010001 |
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35 | |
33 | #ifdef _WIN32 |
36 | #ifdef _WIN32 |
34 | typedef signed char int8_t; |
37 | typedef signed char int8_t; |
35 | typedef unsigned char uint8_t; |
38 | typedef unsigned char uint8_t; |
36 | typedef signed short int16_t; |
39 | typedef signed short int16_t; |
37 | typedef unsigned short uint16_t; |
40 | typedef unsigned short uint16_t; |
… | |
… | |
42 | typedef unsigned long long uint64_t; |
45 | typedef unsigned long long uint64_t; |
43 | #else /* _MSC_VER || __BORLANDC__ */ |
46 | #else /* _MSC_VER || __BORLANDC__ */ |
44 | typedef signed __int64 int64_t; |
47 | typedef signed __int64 int64_t; |
45 | typedef unsigned __int64 uint64_t; |
48 | typedef unsigned __int64 uint64_t; |
46 | #endif |
49 | #endif |
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50 | #ifdef _WIN64 |
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51 | #define ECB_PTRSIZE 8 |
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52 | typedef uint64_t uintptr_t; |
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53 | typedef int64_t intptr_t; |
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54 | #else |
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55 | #define ECB_PTRSIZE 4 |
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56 | typedef uint32_t uintptr_t; |
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57 | typedef int32_t intptr_t; |
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58 | #endif |
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59 | typedef intptr_t ptrdiff_t; |
47 | #else |
60 | #else |
48 | #include <inttypes.h> |
61 | #include <inttypes.h> |
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62 | #if UINTMAX_MAX > 0xffffffffU |
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63 | #define ECB_PTRSIZE 8 |
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64 | #else |
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65 | #define ECB_PTRSIZE 4 |
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66 | #endif |
49 | #endif |
67 | #endif |
50 | |
68 | |
51 | /* many compilers define _GNUC_ to some versions but then only implement |
69 | /* many compilers define _GNUC_ to some versions but then only implement |
52 | * what their idiot authors think are the "more important" extensions, |
70 | * what their idiot authors think are the "more important" extensions, |
53 | * causing enormous grief in return for some better fake benchmark numbers. |
71 | * causing enormous grief in return for some better fake benchmark numbers. |
54 | * or so. |
72 | * or so. |
55 | * we try to detect these and simply assume they are not gcc - if they have |
73 | * we try to detect these and simply assume they are not gcc - if they have |
56 | * an issue with that they should have done it right in the first place. |
74 | * an issue with that they should have done it right in the first place. |
57 | */ |
75 | */ |
58 | #ifndef ECB_GCC_VERSION |
76 | #ifndef ECB_GCC_VERSION |
59 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
77 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
60 | #define ECB_GCC_VERSION(major,minor) 0 |
78 | #define ECB_GCC_VERSION(major,minor) 0 |
61 | #else |
79 | #else |
62 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
80 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
63 | #endif |
81 | #endif |
64 | #endif |
82 | #endif |
65 | |
83 | |
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84 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
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85 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
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86 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
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87 | #define ECB_CPP (__cplusplus+0) |
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88 | #define ECB_CPP98 (__cplusplus >= 199711L) |
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89 | #define ECB_CPP11 (__cplusplus >= 201103L) |
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90 | |
66 | /*****************************************************************************/ |
91 | /*****************************************************************************/ |
67 | |
92 | |
68 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
93 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
69 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
94 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
70 | |
95 | |
… | |
… | |
75 | #if ECB_NO_THREADS || ECB_NO_SMP |
100 | #if ECB_NO_THREADS || ECB_NO_SMP |
76 | #define ECB_MEMORY_FENCE do { } while (0) |
101 | #define ECB_MEMORY_FENCE do { } while (0) |
77 | #endif |
102 | #endif |
78 | |
103 | |
79 | #ifndef ECB_MEMORY_FENCE |
104 | #ifndef ECB_MEMORY_FENCE |
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105 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
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106 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
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107 | /* not just C11 atomics and atomic accesses */ |
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108 | #include <stdatomic.h> |
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109 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_acq_rel) |
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110 | #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire) |
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111 | #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release) |
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112 | #endif |
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113 | #endif |
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114 | |
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115 | #ifndef ECB_MEMORY_FENCE |
80 | #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
116 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
81 | #if __i386 || __i386__ |
117 | #if __i386 || __i386__ |
82 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
118 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
83 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
119 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
84 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
120 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
85 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
121 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
86 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
122 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
87 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
123 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
88 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
124 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
89 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
125 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
90 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
126 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
91 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
127 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
92 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
128 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
93 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
129 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
94 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
130 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
95 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
131 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
96 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
132 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
97 | #elif __sparc || __sparc__ |
133 | #elif __sparc || __sparc__ |
98 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") |
134 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") |
99 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
135 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
100 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
136 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
101 | #elif defined(__s390__) || defined(__s390x__) |
137 | #elif defined __s390__ || defined __s390x__ |
102 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
138 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
103 | #elif defined(__mips__) |
139 | #elif defined __mips__ |
104 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
140 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
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141 | #elif defined __alpha__ |
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142 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
105 | #endif |
143 | #endif |
106 | #endif |
144 | #endif |
107 | #endif |
145 | #endif |
108 | |
146 | |
109 | #ifndef ECB_MEMORY_FENCE |
147 | #ifndef ECB_MEMORY_FENCE |
110 | #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) |
148 | #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
111 | #define ECB_MEMORY_FENCE __sync_synchronize () |
149 | #define ECB_MEMORY_FENCE __sync_synchronize () |
112 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
150 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
113 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
151 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
114 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
152 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
115 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
153 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
116 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
154 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
117 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
155 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
118 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
156 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
119 | #elif defined(_WIN32) |
157 | #elif defined _WIN32 |
120 | #include <WinNT.h> |
158 | #include <WinNT.h> |
121 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
159 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
122 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
160 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
123 | #include <mbarrier.h> |
161 | #include <mbarrier.h> |
124 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
162 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
… | |
… | |
145 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
183 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
146 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
184 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
147 | #endif |
185 | #endif |
148 | #endif |
186 | #endif |
149 | |
187 | |
150 | #if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) |
188 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
151 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
189 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
152 | #endif |
190 | #endif |
153 | |
191 | |
154 | #if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) |
192 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
155 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
193 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
156 | #endif |
194 | #endif |
157 | |
195 | |
158 | /*****************************************************************************/ |
196 | /*****************************************************************************/ |
159 | |
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|
160 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
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161 | |
197 | |
162 | #if __cplusplus |
198 | #if __cplusplus |
163 | #define ecb_inline static inline |
199 | #define ecb_inline static inline |
164 | #elif ECB_GCC_VERSION(2,5) |
200 | #elif ECB_GCC_VERSION(2,5) |
165 | #define ecb_inline static __inline__ |
201 | #define ecb_inline static __inline__ |
… | |
… | |
204 | #elif ECB_GCC_VERSION(3,0) |
240 | #elif ECB_GCC_VERSION(3,0) |
205 | #define ecb_decltype(x) __typeof(x) |
241 | #define ecb_decltype(x) __typeof(x) |
206 | #endif |
242 | #endif |
207 | |
243 | |
208 | #define ecb_noinline ecb_attribute ((__noinline__)) |
244 | #define ecb_noinline ecb_attribute ((__noinline__)) |
209 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
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210 | #define ecb_unused ecb_attribute ((__unused__)) |
245 | #define ecb_unused ecb_attribute ((__unused__)) |
211 | #define ecb_const ecb_attribute ((__const__)) |
246 | #define ecb_const ecb_attribute ((__const__)) |
212 | #define ecb_pure ecb_attribute ((__pure__)) |
247 | #define ecb_pure ecb_attribute ((__pure__)) |
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248 | |
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249 | #if ECB_C11 |
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|
250 | #define ecb_noreturn _Noreturn |
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|
251 | #else |
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|
252 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
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|
253 | #endif |
213 | |
254 | |
214 | #if ECB_GCC_VERSION(4,3) |
255 | #if ECB_GCC_VERSION(4,3) |
215 | #define ecb_artificial ecb_attribute ((__artificial__)) |
256 | #define ecb_artificial ecb_attribute ((__artificial__)) |
216 | #define ecb_hot ecb_attribute ((__hot__)) |
257 | #define ecb_hot ecb_attribute ((__hot__)) |
217 | #define ecb_cold ecb_attribute ((__cold__)) |
258 | #define ecb_cold ecb_attribute ((__cold__)) |
… | |
… | |
308 | |
349 | |
309 | return r + ecb_ld32 (x); |
350 | return r + ecb_ld32 (x); |
310 | } |
351 | } |
311 | #endif |
352 | #endif |
312 | |
353 | |
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354 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
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355 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
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356 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
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357 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
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358 | |
313 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
359 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
314 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
360 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
315 | { |
361 | { |
316 | return ( (x * 0x0802U & 0x22110U) |
362 | return ( (x * 0x0802U & 0x22110U) |
317 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
363 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |