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Comparing libecb/ecb.h (file contents):
Revision 1.50 by root, Fri Jun 17 21:16:11 2011 UTC vs.
Revision 1.62 by root, Thu Aug 4 14:34:00 2011 UTC

… …
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>
49#endif 49#endif
50 50
51/* many compilers define _GNUC_ to some versions but then only implement 51/* many compilers define _GNUC_ to some versions but then only implement
52 * what their idiot authors think are the "more important" extensions, 52 * what their idiot authors think are the "more important" extensions,
53 * causing enourmous grief in return for some better fake benchmark numbers. 53 * causing enormous grief in return for some better fake benchmark numbers.
54 * or so. 54 * or so.
55 * we try to detect these and simply assume they are not gcc - if they have 55 * 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. 56 * an issue with that they should have done it right in the first place.
57 */ 57 */
58#ifndef ECB_GCC_VERSION 58#ifndef ECB_GCC_VERSION
… …
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
66/*****************************************************************************/
67
68/* 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 */
70
71#if ECB_NO_THREADS || ECB_NO_SMP
72 #define ECB_MEMORY_FENCE do { } while (0)
73 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
74 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
75#endif
76
77#ifndef ECB_MEMORY_FENCE
78 #if ECB_GCC_VERSION(2,5)
79 #if __x86
80 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
81 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
82 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
83 #elif __amd64
84 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
85 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
86 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
87 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
88 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \
89 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
90 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
91 #define ECB_MEMORY_FENCE \
92 do { \
93 int null = 0; \
94 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \
95 while (0)
96 #endif
97 #endif
98#endif
99
100#ifndef ECB_MEMORY_FENCE
101 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER)
102 #define ECB_MEMORY_FENCE __sync_synchronize ()
103 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
104 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
105 #elif _MSC_VER >= 1400 /* VC++ 2005 */
106 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
107 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
108 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
109 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
110 #elif defined(_WIN32)
111 #include <WinNT.h>
112 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
113 #endif
114#endif
115
116#ifndef ECB_MEMORY_FENCE
117 #if !ECB_AVOID_PTHREADS
118 /*
119 * if you get undefined symbol references to pthread_mutex_lock,
120 * or failure to find pthread.h, then you should implement
121 * the ECB_MEMORY_FENCE operations for your cpu/compiler
122 * OR provide pthread.h and link against the posix thread library
123 * of your system.
124 */
125 #include <pthread.h>
126 #define ECB_NEEDS_PTHREADS 1
127 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
128
129 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
130 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
131 #endif
132#endif
133
134#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
135 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
136#endif
137
138#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
139 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
140#endif
141
142/*****************************************************************************/
143
66#define ECB_C99 (__STDC_VERSION__ >= 199901L) 144#define ECB_C99 (__STDC_VERSION__ >= 199901L)
67 145
68#if __cplusplus 146#if __cplusplus
69 #define ecb_inline static inline 147 #define ecb_inline static inline
70#elif ECB_GCC_VERSION(2,5) 148#elif ECB_GCC_VERSION(2,5)
… …
189 x *= 0x01010101; 267 x *= 0x01010101;
190 268
191 return x >> 24; 269 return x >> 24;
192 } 270 }
193 271
194 /* you have the choice beetween something with a table lookup, */
195 /* something using lots of bit arithmetic and a simple loop */
196 /* we went for the loop */
197 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 272 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
198 ecb_function_ int ecb_ld32 (uint32_t x) 273 ecb_function_ int ecb_ld32 (uint32_t x)
199 { 274 {
200 int r = 0; 275 int r = 0;
201 276

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