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Comparing libecb/ecb.h (file contents):
Revision 1.76 by root, Wed Jan 25 20:23:12 2012 UTC vs.
Revision 1.96 by root, Wed May 30 16:56:06 2012 UTC

… …
28 */ 28 */
29 29
30#ifndef ECB_H 30#ifndef ECB_H
31#define ECB_H 31#define ECB_H
32 32
33/* 16 bits major, 16 bits minor */
34#define ECB_VERSION 0x00010001
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
50 #ifdef _WIN64
51 #define ECB_PTRSIZE 8
52 typedef uint64_t uintptr_t;
53 typedef int64_t intptr_t;
54 #else
55 #define ECB_PTRSIZE 4
56 typedef uint32_t uintptr_t;
57 typedef int32_t intptr_t;
58 #endif
59 typedef intptr_t ptrdiff_t;
47#else 60#else
48 #include <inttypes.h> 61 #include <inttypes.h>
62 #if UINTMAX_MAX > 0xffffffffU
63 #define ECB_PTRSIZE 8
64 #else
65 #define ECB_PTRSIZE 4
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
84#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
85#define ECB_C99 (__STDC_VERSION__ >= 199901L)
86#define ECB_C11 (__STDC_VERSION__ >= 201112L)
87#define ECB_CPP (__cplusplus+0)
88#define ECB_CPP11 (__cplusplus >= 201103L)
89
66/*****************************************************************************/ 90/*****************************************************************************/
67 91
68/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 92/* 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 */ 93/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
70 94
71#if ECB_NO_THREADS || ECB_NO_SMP 95#if ECB_NO_THREADS
96 #define ECB_NO_SMP 1
97#endif
98
99#if ECB_NO_SMP
72 #define ECB_MEMORY_FENCE do { } while (0) 100 #define ECB_MEMORY_FENCE do { } while (0)
73#endif 101#endif
74 102
75#ifndef ECB_MEMORY_FENCE 103#ifndef ECB_MEMORY_FENCE
76 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 104 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
77 #if __i386 || __i386__ 105 #if __i386 || __i386__
78 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 106 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
79 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 107 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
80 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 108 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
81 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 109 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
82 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 110 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
83 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 111 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
84 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 112 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
85 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 113 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
86 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 114 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
87 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 115 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
88 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 116 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
89 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 117 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
90 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 118 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
91 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 119 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
92 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 120 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
93 #elif __sparc || __sparc__ 121 #elif __sparc || __sparc__
94 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 122 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
95 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 123 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
96 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 124 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
125 #elif defined __s390__ || defined __s390x__
126 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
127 #elif defined __mips__
128 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
129 #elif defined __alpha__
130 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
131 #elif defined __hppa__
132 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
133 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
134 #elif defined __ia64__
135 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
97 #endif 136 #endif
98 #endif 137 #endif
99#endif 138#endif
100 139
101#ifndef ECB_MEMORY_FENCE 140#ifndef ECB_MEMORY_FENCE
141 #if ECB_GCC_VERSION(4,7)
142 /* see comment below about the C11 memory model. in short - avoid */
143 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
144 #elif defined __clang && __has_feature (cxx_atomic)
145 /* see above */
146 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
102 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 147 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
103 #define ECB_MEMORY_FENCE __sync_synchronize () 148 #define ECB_MEMORY_FENCE __sync_synchronize ()
104 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
105 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
106 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 149 #elif _MSC_VER >= 1400 /* VC++ 2005 */
107 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 150 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
108 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 151 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
109 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 152 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
110 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 153 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
111 #elif defined(_WIN32) 154 #elif defined _WIN32
112 #include <WinNT.h> 155 #include <WinNT.h>
113 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 156 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
114 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 157 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
115 #include <mbarrier.h> 158 #include <mbarrier.h>
116 #define ECB_MEMORY_FENCE __machine_rw_barrier () 159 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
117 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 160 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
118 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 161 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
162 #elif __xlC__
163 #define ECB_MEMORY_FENCE __sync ()
164 #endif
165#endif
166
167#ifndef ECB_MEMORY_FENCE
168 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
169 /* we assume that these memory fences work on all variables/all memory accesses, */
170 /* not just C11 atomics and atomic accesses */
171 #include <stdatomic.h>
172 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
173 /* simple barrier semantics. That means we need to take out thor's hammer. */
174 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
119 #endif 175 #endif
120#endif 176#endif
121 177
122#ifndef ECB_MEMORY_FENCE 178#ifndef ECB_MEMORY_FENCE
123 #if !ECB_AVOID_PTHREADS 179 #if !ECB_AVOID_PTHREADS
… …
135 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 191 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
136 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 192 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
137 #endif 193 #endif
138#endif 194#endif
139 195
140#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 196#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
141 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 197 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
142#endif 198#endif
143 199
144#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 200#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
145 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 201 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
146#endif 202#endif
147 203
148/*****************************************************************************/ 204/*****************************************************************************/
149
150#define ECB_C99 (__STDC_VERSION__ >= 199901L)
151 205
152#if __cplusplus 206#if __cplusplus
153 #define ecb_inline static inline 207 #define ecb_inline static inline
154#elif ECB_GCC_VERSION(2,5) 208#elif ECB_GCC_VERSION(2,5)
155 #define ecb_inline static __inline__ 209 #define ecb_inline static __inline__
… …
194#elif ECB_GCC_VERSION(3,0) 248#elif ECB_GCC_VERSION(3,0)
195 #define ecb_decltype(x) __typeof(x) 249 #define ecb_decltype(x) __typeof(x)
196#endif 250#endif
197 251
198#define ecb_noinline ecb_attribute ((__noinline__)) 252#define ecb_noinline ecb_attribute ((__noinline__))
199#define ecb_noreturn ecb_attribute ((__noreturn__))
200#define ecb_unused ecb_attribute ((__unused__)) 253#define ecb_unused ecb_attribute ((__unused__))
201#define ecb_const ecb_attribute ((__const__)) 254#define ecb_const ecb_attribute ((__const__))
202#define ecb_pure ecb_attribute ((__pure__)) 255#define ecb_pure ecb_attribute ((__pure__))
256
257#if ECB_C11
258 #define ecb_noreturn _Noreturn
259#else
260 #define ecb_noreturn ecb_attribute ((__noreturn__))
261#endif
203 262
204#if ECB_GCC_VERSION(4,3) 263#if ECB_GCC_VERSION(4,3)
205 #define ecb_artificial ecb_attribute ((__artificial__)) 264 #define ecb_artificial ecb_attribute ((__artificial__))
206 #define ecb_hot ecb_attribute ((__hot__)) 265 #define ecb_hot ecb_attribute ((__hot__))
207 #define ecb_cold ecb_attribute ((__cold__)) 266 #define ecb_cold ecb_attribute ((__cold__))
… …
298 357
299 return r + ecb_ld32 (x); 358 return r + ecb_ld32 (x);
300 } 359 }
301#endif 360#endif
302 361
362ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
363ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
364ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
365ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
366
303ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 367ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
304ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 368ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
305{ 369{
306 return ( (x * 0x0802U & 0x22110U) 370 return ( (x * 0x0802U & 0x22110U)
307 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 371 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;

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