[ViewVC] Diff of: cvs/libecb/ecb.h

Comparing libecb/ecb.h (file contents):
Revision 1.42 by root, Sun Jun 12 08:14:03 2011 UTC vs.
Revision 1.53 by root, Mon Jul 18 01:25:46 2011 UTC

…		…
28	*/	28	*/
29		29
30	#ifndef ECB_H	30	#ifndef ECB_H
31	#define ECB_H	31	#define ECB_H
32		32
		33	#ifdef _WIN32
		34	typedef signed char int8_t;
		35	typedef unsigned char uint8_t;
		36	typedef signed short int16_t;
		37	typedef unsigned short uint16_t;
		38	typedef signed int int32_t;
		39	typedef unsigned int uint32_t;
		40	#if __GNUC__
		41	typedef signed long long int64_t;
		42	typedef unsigned long long uint64_t;
		43	#else /* _MSC_VER \|\| __BORLANDC__ */
		44	typedef signed __int64 int64_t;
		45	typedef unsigned __int64 uint64_t;
		46	#endif
		47	#else
33	#include <inttypes.h>	48	#include <inttypes.h>
		49	#endif
34		50
35	/* many compilers define _GNUC_ to some versions but then only implement	51	/* many compilers define _GNUC_ to some versions but then only implement
36	* what their idiot authors think are the "more important" extensions,	52	* what their idiot authors think are the "more important" extensions,
37	* causing enourmous grief in return for some better fake benchmark numbers.	53	* causing enourmous grief in return for some better fake benchmark numbers.
38	* or so.	54	* or so.
39	* 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
40	* 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.
41	*/	57	*/
42	#ifndef ECB_GCC_VERSION	58	#ifndef ECB_GCC_VERSION
43	#if defined(__INTEL_COMPILER) \|\| defined(__SUNPRO_C) \|\| defined(__llvm__)	59	#if !defined(__GNUC_MINOR__) \|\| defined(__INTEL_COMPILER) \|\| defined(__SUNPRO_C) \|\| defined(__SUNPRO_CC) \|\| defined(__llvm__) \|\| defined(__clang__)
44	#define ECB_GCC_VERSION(major,minor) 0	60	#define ECB_GCC_VERSION(major,minor) 0
45	#else	61	#else
46	#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)))
47	#endif	63	#endif
48	#endif	64	#endif
49		65
		66	/*****************************************************************************/
		67
		68	#ifndef ECB_MEMORY_FENCE
		69	#if ECB_GCC_VERSION(2,5)
		70	#if __x86
		71	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; or.b $0, -1(%%esp)" : : : "memory")
		72	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		73	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
		74	#elif __amd64
		75	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		76	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
		77	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
		78	#endif
		79	#endif
		80	#endif
		81
		82	#ifndef ECB_MEMORY_FENCE
		83	#if ECB_GCC_VERSION(4,4)
		84	#define ECB_MEMORY_FENCE __sync_synchronize ()
		85	#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
		86	#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
		87	#elif _MSC_VER >= 1400
		88	#define ECB_MEMORY_FENCE do { } while (0)
		89	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		90	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		91	#elif defined(_WIN32) && defined(MemoryBarrier)
		92	#define ECB_MEMORY_FENCE MemoryBarrier ()
		93	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		94	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		95	#endif
		96	#endif
		97
		98	#ifndef ECB_MEMORY_FENCE
		99	#include <pthread.h>
		100
		101	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		102	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		103	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		104	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		105	#endif
		106
		107	/*****************************************************************************/
		108
50	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	109	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
51		110
52	#if __cplusplus	111	#if __cplusplus
53	#define ECB_INLINE static inline	112	#define ecb_inline static inline
54	#elif ECB_GCC_VERSION(2,5)	113	#elif ECB_GCC_VERSION(2,5)
55	#define ECB_INLINE static __inline__	114	#define ecb_inline static __inline__
56	#elif ECB_C99	115	#elif ECB_C99
57	#define ECB_INLINE static inline	116	#define ecb_inline static inline
58	#else	117	#else
59	#define ECB_INLINE static	118	#define ecb_inline static
60	#endif	119	#endif
61		120
62	#if ECB_GCC_VERSION(3,3)	121	#if ECB_GCC_VERSION(3,3)
63	#define ecb_restrict __restrict__	122	#define ecb_restrict __restrict__
64	#elif ECB_C99	123	#elif ECB_C99
…		…
72	#define ECB_CONCAT_(a, b) a ## b	131	#define ECB_CONCAT_(a, b) a ## b
73	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	132	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
74	#define ECB_STRINGIFY_(a) # a	133	#define ECB_STRINGIFY_(a) # a
75	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	134	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
76		135
77	#define ecb_function_ ECB_INLINE	136	#define ecb_function_ ecb_inline
78		137
79	#if ECB_GCC_VERSION(3,1)	138	#if ECB_GCC_VERSION(3,1)
80	#define ecb_attribute(attrlist) __attribute__(attrlist)	139	#define ecb_attribute(attrlist) __attribute__(attrlist)
81	#define ecb_is_constant(expr) __builtin_constant_p (expr)	140	#define ecb_is_constant(expr) __builtin_constant_p (expr)
82	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	141	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
…		…
120	#define ecb_likely(expr) ecb_expect_true (expr)	179	#define ecb_likely(expr) ecb_expect_true (expr)
121	#define ecb_unlikely(expr) ecb_expect_false (expr)	180	#define ecb_unlikely(expr) ecb_expect_false (expr)
122		181
123	/* count trailing zero bits and count # of one bits */	182	/* count trailing zero bits and count # of one bits */
124	#if ECB_GCC_VERSION(3,4)	183	#if ECB_GCC_VERSION(3,4)
		184	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		185	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		186	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
125	#define ecb_ctz32(x) __builtin_ctz (x)	187	#define ecb_ctz32(x) __builtin_ctz (x)
		188	#define ecb_ctz64(x) __builtin_ctzll (x)
126	#define ecb_popcount32(x) __builtin_popcount (x)	189	#define ecb_popcount32(x) __builtin_popcount (x)
		190	/* no popcountll */
127	#else	191	#else
128	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	192	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
129	ecb_function_ int	193	ecb_function_ int
130	ecb_ctz32 (uint32_t x)	194	ecb_ctz32 (uint32_t x)
131	{	195	{
132	int r = 0;	196	int r = 0;
133		197
134	x &= -x; /* this isolates the lowest bit */	198	x &= ~x + 1; /* this isolates the lowest bit */
135		199
		200	#if ECB_branchless_on_i386
		201	r += !!(x & 0xaaaaaaaa) << 0;
		202	r += !!(x & 0xcccccccc) << 1;
		203	r += !!(x & 0xf0f0f0f0) << 2;
		204	r += !!(x & 0xff00ff00) << 3;
		205	r += !!(x & 0xffff0000) << 4;
		206	#else
136	if (x & 0xaaaaaaaa) r += 1;	207	if (x & 0xaaaaaaaa) r += 1;
137	if (x & 0xcccccccc) r += 2;	208	if (x & 0xcccccccc) r += 2;
138	if (x & 0xf0f0f0f0) r += 4;	209	if (x & 0xf0f0f0f0) r += 4;
139	if (x & 0xff00ff00) r += 8;	210	if (x & 0xff00ff00) r += 8;
140	if (x & 0xffff0000) r += 16;	211	if (x & 0xffff0000) r += 16;
		212	#endif
141		213
142	return r;	214	return r;
		215	}
		216
		217	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
		218	ecb_function_ int
		219	ecb_ctz64 (uint64_t x)
		220	{
		221	int shift = x & 0xffffffffU ? 0 : 32;
		222	return ecb_ctz32 (x >> shift) + shift;
143	}	223	}
144		224
145	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	225	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
146	ecb_function_ int	226	ecb_function_ int
147	ecb_popcount32 (uint32_t x)	227	ecb_popcount32 (uint32_t x)
…		…
151	x = ((x >> 4) + x) & 0x0f0f0f0f;	231	x = ((x >> 4) + x) & 0x0f0f0f0f;
152	x *= 0x01010101;	232	x *= 0x01010101;
153		233
154	return x >> 24;	234	return x >> 24;
155	}	235	}
		236
		237	/* you have the choice beetween something with a table lookup, */
		238	/* something using lots of bit arithmetic and a simple loop */
		239	/* we went for the loop */
		240	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
		241	ecb_function_ int ecb_ld32 (uint32_t x)
		242	{
		243	int r = 0;
		244
		245	if (x >> 16) { x >>= 16; r += 16; }
		246	if (x >> 8) { x >>= 8; r += 8; }
		247	if (x >> 4) { x >>= 4; r += 4; }
		248	if (x >> 2) { x >>= 2; r += 2; }
		249	if (x >> 1) { r += 1; }
		250
		251	return r;
		252	}
		253
		254	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
		255	ecb_function_ int ecb_ld64 (uint64_t x)
		256	{
		257	int r = 0;
		258
		259	if (x >> 32) { x >>= 32; r += 32; }
		260
		261	return r + ecb_ld32 (x);
		262	}
156	#endif	263	#endif
		264
		265	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		266	/* so for this version we are lazy */
		267	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
		268	ecb_function_ int
		269	ecb_popcount64 (uint64_t x)
		270	{
		271	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		272	}
		273
		274	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
		275	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
		276	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
		277	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
		278	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
		279	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
		280	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
		281	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
		282
		283	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
		284	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
		285	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
		286	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
		287	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
		288	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
		289	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
		290	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
157		291
158	#if ECB_GCC_VERSION(4,3)	292	#if ECB_GCC_VERSION(4,3)
159	#define ecb_bswap32(x) __builtin_bswap32 (x)
160	#define ecb_bswap16(x) (__builtin_bswap32(x) >> 16)	293	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		294	#define ecb_bswap32(x) __builtin_bswap32 (x)
		295	#define ecb_bswap64(x) __builtin_bswap64 (x)
161	#else	296	#else
		297	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
		298	ecb_function_ uint16_t
		299	ecb_bswap16 (uint16_t x)
		300	{
		301	return ecb_rotl16 (x, 8);
		302	}
		303
162	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	304	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
163	ecb_function_ uint32_t	305	ecb_function_ uint32_t
164	ecb_bswap32 (uint32_t x)	306	ecb_bswap32 (uint32_t x)
165	{	307	{
166	return (x >> 24)	308	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
167	\| ((x >> 8) & 0x0000ff00)
168	\| ((x << 8) & 0x00ff0000)
169	\| (x << 24);
170	}	309	}
171		310
172	ecb_function_ uint32_t ecb_bswap16 (uint32_t x) ecb_const;	311	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
173	ecb_function_ uint32_t	312	ecb_function_ uint64_t
174	ecb_bswap16 (uint32_t x)	313	ecb_bswap64 (uint64_t x)
175	{	314	{
176	return ((x >> 8) & 0xff)	315	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
177	\| ((x << 8) & 0x00ff0000)
178	\| (x << 24);
179	}	316	}
180	#endif	317	#endif
181		318
182	#if ECB_GCC_VERSION(4,5)	319	#if ECB_GCC_VERSION(4,5)
183	#define ecb_unreachable() __builtin_unreachable ()	320	#define ecb_unreachable() __builtin_unreachable ()
…		…
218	}	355	}
219	#else	356	#else
220	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	357	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
221	#endif	358	#endif
222		359
223	ECB_INLINE uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
224	ECB_INLINE uint32_t
225	ecb_rotr32 (uint32_t x, unsigned int count)
226	{
227	return (x << (32 - count)) \| (x >> count);
228	}
229
230	ECB_INLINE uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
231	ECB_INLINE uint32_t
232	ecb_rotl32 (uint32_t x, unsigned int count)
233	{
234	return (x >> (32 - count)) \| (x << count);
235	}
236
237	#endif	360	#endif
238		361

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Comparing libecb/ecb.h (file contents): Revision 1.42 by root, Sun Jun 12 08:14:03 2011 UTC vs. Revision 1.53 by root, Mon Jul 18 01:25:46 2011 UTC

Diff Legend

Comparing libecb/ecb.h (file contents):
Revision 1.42 by root, Sun Jun 12 08:14:03 2011 UTC vs.
Revision 1.53 by root, Mon Jul 18 01:25:46 2011 UTC