| 1 | /* |
1 | /* |
| 2 | * libecb - http://software.schmorp.de/pkg/libecb |
2 | * libecb - http://software.schmorp.de/pkg/libecb |
| 3 | * |
3 | * |
| 4 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
4 | * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> |
| 5 | * Copyright (©) 2011 Emanuele Giaquinta |
5 | * Copyright (©) 2011 Emanuele Giaquinta |
| 6 | * All rights reserved. |
6 | * All rights reserved. |
| 7 | * |
7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * Redistribution and use in source and binary forms, with or without modifica- |
| 9 | * tion, are permitted provided that the following conditions are met: |
9 | * tion, are permitted provided that the following conditions are met: |
| … | |
… | |
| 23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
24 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
| 26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
26 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | * |
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29 | * Alternatively, the contents of this file may be used under the terms of |
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30 | * the GNU General Public License ("GPL") version 2 or any later version, |
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31 | * in which case the provisions of the GPL are applicable instead of |
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32 | * the above. If you wish to allow the use of your version of this file |
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33 | * only under the terms of the GPL and not to allow others to use your |
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34 | * version of this file under the BSD license, indicate your decision |
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35 | * by deleting the provisions above and replace them with the notice |
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36 | * and other provisions required by the GPL. If you do not delete the |
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37 | * provisions above, a recipient may use your version of this file under |
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38 | * either the BSD or the GPL. |
| 28 | */ |
39 | */ |
| 29 | |
40 | |
| 30 | #ifndef ECB_H |
41 | #ifndef ECB_H |
| 31 | #define ECB_H |
42 | #define ECB_H |
| 32 | |
43 | |
| 33 | /* 16 bits major, 16 bits minor */ |
44 | /* 16 bits major, 16 bits minor */ |
| 34 | #define ECB_VERSION 0x00010001 |
45 | #define ECB_VERSION 0x00010004 |
| 35 | |
46 | |
| 36 | #ifdef _WIN32 |
47 | #ifdef _WIN32 |
| 37 | typedef signed char int8_t; |
48 | typedef signed char int8_t; |
| 38 | typedef unsigned char uint8_t; |
49 | typedef unsigned char uint8_t; |
| 39 | typedef signed short int16_t; |
50 | typedef signed short int16_t; |
| … | |
… | |
| 63 | #else |
74 | #else |
| 64 | #define ECB_PTRSIZE 4 |
75 | #define ECB_PTRSIZE 4 |
| 65 | #endif |
76 | #endif |
| 66 | #endif |
77 | #endif |
| 67 | |
78 | |
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79 | /* work around x32 idiocy by defining proper macros */ |
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80 | #if __amd64 || __x86_64 || _M_AMD64 || _M_X64 |
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81 | #if _ILP32 |
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82 | #define ECB_AMD64_X32 1 |
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83 | #else |
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84 | #define ECB_AMD64 1 |
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85 | #endif |
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86 | #endif |
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87 | |
| 68 | /* many compilers define _GNUC_ to some versions but then only implement |
88 | /* many compilers define _GNUC_ to some versions but then only implement |
| 69 | * what their idiot authors think are the "more important" extensions, |
89 | * what their idiot authors think are the "more important" extensions, |
| 70 | * causing enormous grief in return for some better fake benchmark numbers. |
90 | * causing enormous grief in return for some better fake benchmark numbers. |
| 71 | * or so. |
91 | * or so. |
| 72 | * we try to detect these and simply assume they are not gcc - if they have |
92 | * we try to detect these and simply assume they are not gcc - if they have |
| 73 | * an issue with that they should have done it right in the first place. |
93 | * an issue with that they should have done it right in the first place. |
| 74 | */ |
94 | */ |
| 75 | #ifndef ECB_GCC_VERSION |
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| 76 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
95 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
| 77 | #define ECB_GCC_VERSION(major,minor) 0 |
96 | #define ECB_GCC_VERSION(major,minor) 0 |
| 78 | #else |
97 | #else |
| 79 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
98 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
| 80 | #endif |
99 | #endif |
| 81 | #endif |
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| 82 | |
100 | |
| 83 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
101 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
| 84 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
102 | |
| 85 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
103 | #if __clang__ && defined(__has_builtin) |
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104 | #define ECB_CLANG_BUILTIN(x) __has_builtin(x) |
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105 | #else |
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106 | #define ECB_CLANG_BUILTIN(x) 0 |
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107 | #endif |
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108 | |
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109 | #if __clang__ && defined(__has_extension) |
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110 | #define ECB_CLANG_EXTENSION(x) __has_extension(x) |
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111 | #else |
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112 | #define ECB_CLANG_EXTENSION(x) 0 |
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113 | #endif |
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114 | |
| 86 | #define ECB_CPP (__cplusplus+0) |
115 | #define ECB_CPP (__cplusplus+0) |
| 87 | #define ECB_CPP11 (__cplusplus >= 201103L) |
116 | #define ECB_CPP11 (__cplusplus >= 201103L) |
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117 | |
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118 | #if ECB_CPP |
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119 | #define ECB_C 0 |
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120 | #define ECB_STDC_VERSION 0 |
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121 | #else |
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122 | #define ECB_C 1 |
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123 | #define ECB_STDC_VERSION __STDC_VERSION__ |
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124 | #endif |
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125 | |
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126 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
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127 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
| 88 | |
128 | |
| 89 | #if ECB_CPP |
129 | #if ECB_CPP |
| 90 | #define ECB_EXTERN_C extern "C" |
130 | #define ECB_EXTERN_C extern "C" |
| 91 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
131 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
| 92 | #define ECB_EXTERN_C_END } |
132 | #define ECB_EXTERN_C_END } |
| … | |
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| 125 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
165 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
| 126 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
166 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
| 127 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
167 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
| 128 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
168 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
| 129 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
169 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
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170 | #elif __aarch64__ |
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171 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
| 130 | #elif __sparc || __sparc__ |
172 | #elif (__sparc || __sparc__) && !__sparcv8 |
| 131 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
173 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
| 132 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
174 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
| 133 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
175 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
| 134 | #elif defined __s390__ || defined __s390x__ |
176 | #elif defined __s390__ || defined __s390x__ |
| 135 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
177 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
| 136 | #elif defined __mips__ |
178 | #elif defined __mips__ |
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179 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
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180 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
| 137 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
181 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
| 138 | #elif defined __alpha__ |
182 | #elif defined __alpha__ |
| 139 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
183 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
| 140 | #elif defined __hppa__ |
184 | #elif defined __hppa__ |
| 141 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
185 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
| 142 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
186 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
| 143 | #elif defined __ia64__ |
187 | #elif defined __ia64__ |
| 144 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
188 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
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189 | #elif defined __m68k__ |
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190 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
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191 | #elif defined __m88k__ |
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192 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
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193 | #elif defined __sh__ |
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194 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
| 145 | #endif |
195 | #endif |
| 146 | #endif |
196 | #endif |
| 147 | #endif |
197 | #endif |
| 148 | |
198 | |
| 149 | #ifndef ECB_MEMORY_FENCE |
199 | #ifndef ECB_MEMORY_FENCE |
| 150 | #if ECB_GCC_VERSION(4,7) |
200 | #if ECB_GCC_VERSION(4,7) |
| 151 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
201 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
| 152 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
202 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
| 153 | /*#elif defined __clang && __has_feature (cxx_atomic)*/ |
203 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
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204 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
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205 | |
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206 | #elif ECB_CLANG_EXTENSION(c_atomic) |
| 154 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
207 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
| 155 | /*#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)*/ |
208 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
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209 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
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210 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
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211 | |
| 156 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
212 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
| 157 | #define ECB_MEMORY_FENCE __sync_synchronize () |
213 | #define ECB_MEMORY_FENCE __sync_synchronize () |
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214 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
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215 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
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216 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
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217 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
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218 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
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219 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
| 158 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
220 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
| 159 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
221 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
| 160 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
222 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
| 161 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
223 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
| 162 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
224 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
| … | |
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| 182 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
244 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
| 183 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
245 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
| 184 | /* for most usages, or gcc and clang have a bug */ |
246 | /* for most usages, or gcc and clang have a bug */ |
| 185 | /* I *currently* lean towards the latter, and inefficiently implement */ |
247 | /* I *currently* lean towards the latter, and inefficiently implement */ |
| 186 | /* all three of ecb's fences as a seq_cst fence */ |
248 | /* all three of ecb's fences as a seq_cst fence */ |
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249 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
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250 | /* for all __atomic_thread_fence's except seq_cst */ |
| 187 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
251 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
| 188 | #endif |
252 | #endif |
| 189 | #endif |
253 | #endif |
| 190 | |
254 | |
| 191 | #ifndef ECB_MEMORY_FENCE |
255 | #ifndef ECB_MEMORY_FENCE |
| … | |
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| 241 | #define ECB_STRINGIFY_(a) # a |
305 | #define ECB_STRINGIFY_(a) # a |
| 242 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
306 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
| 243 | |
307 | |
| 244 | #define ecb_function_ ecb_inline |
308 | #define ecb_function_ ecb_inline |
| 245 | |
309 | |
| 246 | #if ECB_GCC_VERSION(3,1) |
310 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
| 247 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
311 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
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312 | #else |
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313 | #define ecb_attribute(attrlist) |
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314 | #endif |
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315 | |
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316 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
| 248 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
317 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
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318 | #else |
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319 | /* possible C11 impl for integral types |
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320 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
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321 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
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322 | |
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323 | #define ecb_is_constant(expr) 0 |
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324 | #endif |
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325 | |
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326 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
| 249 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
327 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
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328 | #else |
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329 | #define ecb_expect(expr,value) (expr) |
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330 | #endif |
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331 | |
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332 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
| 250 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
333 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
| 251 | #else |
334 | #else |
| 252 | #define ecb_attribute(attrlist) |
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| 253 | #define ecb_is_constant(expr) 0 |
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| 254 | #define ecb_expect(expr,value) (expr) |
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| 255 | #define ecb_prefetch(addr,rw,locality) |
335 | #define ecb_prefetch(addr,rw,locality) |
| 256 | #endif |
336 | #endif |
| 257 | |
337 | |
| 258 | /* no emulation for ecb_decltype */ |
338 | /* no emulation for ecb_decltype */ |
| 259 | #if ECB_GCC_VERSION(4,5) |
339 | #if ECB_GCC_VERSION(4,5) |
| 260 | #define ecb_decltype(x) __decltype(x) |
340 | #define ecb_decltype(x) __decltype (x) |
| 261 | #elif ECB_GCC_VERSION(3,0) |
341 | #elif ECB_GCC_VERSION(3,0) |
| 262 | #define ecb_decltype(x) __typeof(x) |
342 | #define ecb_decltype(x) __typeof (x) |
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343 | #elif ECB_CPP11 |
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344 | #define ecb_decltype(x) decltype (x) |
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345 | #endif |
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346 | |
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347 | #if _MSC_VER >= 1300 |
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348 | #define ecb_deprecated __declspec(deprecated) |
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349 | #else |
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350 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
| 263 | #endif |
351 | #endif |
| 264 | |
352 | |
| 265 | #define ecb_noinline ecb_attribute ((__noinline__)) |
353 | #define ecb_noinline ecb_attribute ((__noinline__)) |
| 266 | #define ecb_unused ecb_attribute ((__unused__)) |
354 | #define ecb_unused ecb_attribute ((__unused__)) |
| 267 | #define ecb_const ecb_attribute ((__const__)) |
355 | #define ecb_const ecb_attribute ((__const__)) |
| 268 | #define ecb_pure ecb_attribute ((__pure__)) |
356 | #define ecb_pure ecb_attribute ((__pure__)) |
| 269 | |
357 | |
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358 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */ |
| 270 | #if ECB_C11 |
359 | #if ECB_C11 |
| 271 | #define ecb_noreturn _Noreturn |
360 | #define ecb_noreturn _Noreturn |
| 272 | #else |
361 | #else |
| 273 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
362 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
| 274 | #endif |
363 | #endif |
| … | |
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| 291 | /* for compatibility to the rest of the world */ |
380 | /* for compatibility to the rest of the world */ |
| 292 | #define ecb_likely(expr) ecb_expect_true (expr) |
381 | #define ecb_likely(expr) ecb_expect_true (expr) |
| 293 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
382 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
| 294 | |
383 | |
| 295 | /* count trailing zero bits and count # of one bits */ |
384 | /* count trailing zero bits and count # of one bits */ |
| 296 | #if ECB_GCC_VERSION(3,4) |
385 | #if ECB_GCC_VERSION(3,4) \ |
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386 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
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387 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
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388 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
| 297 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
389 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
| 298 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
390 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
| 299 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
391 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
| 300 | #define ecb_ctz32(x) __builtin_ctz (x) |
392 | #define ecb_ctz32(x) __builtin_ctz (x) |
| 301 | #define ecb_ctz64(x) __builtin_ctzll (x) |
393 | #define ecb_ctz64(x) __builtin_ctzll (x) |
| … | |
… | |
| 432 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
524 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
| 433 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
525 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
| 434 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
526 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
| 435 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
527 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
| 436 | |
528 | |
| 437 | #if ECB_GCC_VERSION(4,3) |
529 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
| 438 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
530 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
| 439 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
531 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
| 440 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
532 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
| 441 | #else |
533 | #else |
| 442 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
534 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
| … | |
… | |
| 459 | { |
551 | { |
| 460 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
552 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
| 461 | } |
553 | } |
| 462 | #endif |
554 | #endif |
| 463 | |
555 | |
| 464 | #if ECB_GCC_VERSION(4,5) |
556 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
| 465 | #define ecb_unreachable() __builtin_unreachable () |
557 | #define ecb_unreachable() __builtin_unreachable () |
| 466 | #else |
558 | #else |
| 467 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
559 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
| 468 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
560 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
| 469 | ecb_inline void ecb_unreachable (void) { } |
561 | ecb_inline void ecb_unreachable (void) { } |
| … | |
… | |
| 475 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
567 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
| 476 | ecb_inline unsigned char |
568 | ecb_inline unsigned char |
| 477 | ecb_byteorder_helper (void) |
569 | ecb_byteorder_helper (void) |
| 478 | { |
570 | { |
| 479 | /* the union code still generates code under pressure in gcc, */ |
571 | /* the union code still generates code under pressure in gcc, */ |
| 480 | /* but less than using pointers, and always seem to */ |
572 | /* but less than using pointers, and always seems to */ |
| 481 | /* successfully return a constant. */ |
573 | /* successfully return a constant. */ |
| 482 | /* the reason why we have this horrible preprocessor mess */ |
574 | /* the reason why we have this horrible preprocessor mess */ |
| 483 | /* is to avoid it in all cases, at least on common architectures */ |
575 | /* is to avoid it in all cases, at least on common architectures */ |
| 484 | /* and yes, gcc defines __BYTE_ORDER__, g++ does not */ |
576 | /* or when using a recent enough gcc version (>= 4.6) */ |
| 485 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
577 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
| 486 | return 0x44; |
578 | return 0x44; |
| 487 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
579 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
| 488 | return 0x44; |
580 | return 0x44; |
| 489 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
581 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
| 490 | retrurn 0x11; |
582 | return 0x11; |
| 491 | #else |
583 | #else |
| 492 | union |
584 | union |
| 493 | { |
585 | { |
| 494 | uint32_t i; |
586 | uint32_t i; |
| 495 | uint8_t c; |
587 | uint8_t c; |
| … | |
… | |
| 543 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
635 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
| 544 | #if 0 \ |
636 | #if 0 \ |
| 545 | || __i386 || __i386__ \ |
637 | || __i386 || __i386__ \ |
| 546 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
638 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
| 547 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
639 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
| 548 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
| 549 | || defined __s390__ || defined __s390x__ \ |
640 | || defined __s390__ || defined __s390x__ \ |
| 550 | || defined __mips__ \ |
641 | || defined __mips__ \ |
| 551 | || defined __alpha__ \ |
642 | || defined __alpha__ \ |
| 552 | || defined __hppa__ \ |
643 | || defined __hppa__ \ |
| 553 | || defined __ia64__ \ |
644 | || defined __ia64__ \ |
|
|
645 | || defined __m68k__ \ |
|
|
646 | || defined __m88k__ \ |
|
|
647 | || defined __sh__ \ |
| 554 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 |
648 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
649 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
650 | || defined __aarch64__ |
| 555 | #define ECB_STDFP 1 |
651 | #define ECB_STDFP 1 |
| 556 | #include <string.h> /* for memcpy */ |
652 | #include <string.h> /* for memcpy */ |
| 557 | #else |
653 | #else |
| 558 | #define ECB_STDFP 0 |
654 | #define ECB_STDFP 0 |
| 559 | #endif |
655 | #endif |
| 560 | |
656 | |
| 561 | #ifndef ECB_NO_LIBM |
657 | #ifndef ECB_NO_LIBM |
|
|
658 | |
|
|
659 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
660 | |
|
|
661 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
662 | #ifdef INFINITY |
|
|
663 | #define ECB_INFINITY INFINITY |
|
|
664 | #else |
|
|
665 | #define ECB_INFINITY HUGE_VAL |
|
|
666 | #endif |
|
|
667 | |
|
|
668 | #ifdef NAN |
|
|
669 | #define ECB_NAN NAN |
|
|
670 | #else |
|
|
671 | #define ECB_NAN ECB_INFINITY |
|
|
672 | #endif |
|
|
673 | |
|
|
674 | /* converts an ieee half/binary16 to a float */ |
|
|
675 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
|
|
676 | ecb_function_ float |
|
|
677 | ecb_binary16_to_float (uint16_t x) |
|
|
678 | { |
|
|
679 | int e = (x >> 10) & 0x1f; |
|
|
680 | int m = x & 0x3ff; |
|
|
681 | float r; |
|
|
682 | |
|
|
683 | if (!e ) r = ldexpf (m , -24); |
|
|
684 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
|
|
685 | else if (m ) r = ECB_NAN; |
|
|
686 | else r = ECB_INFINITY; |
|
|
687 | |
|
|
688 | return x & 0x8000 ? -r : r; |
|
|
689 | } |
| 562 | |
690 | |
| 563 | /* convert a float to ieee single/binary32 */ |
691 | /* convert a float to ieee single/binary32 */ |
| 564 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
692 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
| 565 | ecb_function_ uint32_t |
693 | ecb_function_ uint32_t |
| 566 | ecb_float_to_binary32 (float x) |
694 | ecb_float_to_binary32 (float x) |
| … | |
… | |
| 569 | |
697 | |
| 570 | #if ECB_STDFP |
698 | #if ECB_STDFP |
| 571 | memcpy (&r, &x, 4); |
699 | memcpy (&r, &x, 4); |
| 572 | #else |
700 | #else |
| 573 | /* slow emulation, works for anything but -0 */ |
701 | /* slow emulation, works for anything but -0 */ |
| 574 | ECB_EXTERN_C float frexpf (float v, int *e); |
|
|
| 575 | uint32_t m; |
702 | uint32_t m; |
| 576 | int e; |
703 | int e; |
| 577 | |
704 | |
| 578 | if (x == 0e0f ) return 0; |
705 | if (x == 0e0f ) return 0x00000000U; |
| 579 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
706 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
| 580 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
707 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
| 581 | if (x != x ) return 0x7fbfffffU; |
708 | if (x != x ) return 0x7fbfffffU; |
| 582 | |
709 | |
| 583 | m = frexpf (x, &e) * 0x1000000U; |
710 | m = frexpf (x, &e) * 0x1000000U; |
| … | |
… | |
| 585 | r = m & 0x80000000U; |
712 | r = m & 0x80000000U; |
| 586 | |
713 | |
| 587 | if (r) |
714 | if (r) |
| 588 | m = -m; |
715 | m = -m; |
| 589 | |
716 | |
| 590 | if (e < -125) |
717 | if (e <= -126) |
| 591 | { |
718 | { |
| 592 | m &= 0xffffffU; |
719 | m &= 0xffffffU; |
| 593 | m >>= (-125 - e); |
720 | m >>= (-125 - e); |
| 594 | e = -126; |
721 | e = -126; |
| 595 | } |
722 | } |
| … | |
… | |
| 610 | |
737 | |
| 611 | #if ECB_STDFP |
738 | #if ECB_STDFP |
| 612 | memcpy (&r, &x, 4); |
739 | memcpy (&r, &x, 4); |
| 613 | #else |
740 | #else |
| 614 | /* emulation, only works for normals and subnormals and +0 */ |
741 | /* emulation, only works for normals and subnormals and +0 */ |
| 615 | ECB_EXTERN_C float ldexpf (float x, int e); |
|
|
| 616 | |
|
|
| 617 | int neg = x >> 31; |
742 | int neg = x >> 31; |
| 618 | int e = (x >> 23) & 0xffU; |
743 | int e = (x >> 23) & 0xffU; |
| 619 | |
744 | |
| 620 | x &= 0x7fffffU; |
745 | x &= 0x7fffffU; |
| 621 | |
746 | |
| … | |
… | |
| 623 | x |= 0x800000U; |
748 | x |= 0x800000U; |
| 624 | else |
749 | else |
| 625 | e = 1; |
750 | e = 1; |
| 626 | |
751 | |
| 627 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
752 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
| 628 | r = ldexpf (x * (1.f / 0x1000000U), e - 126); |
753 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
| 629 | |
754 | |
| 630 | r = neg ? -r : r; |
755 | r = neg ? -r : r; |
| 631 | #endif |
756 | #endif |
| 632 | |
757 | |
| 633 | return r; |
758 | return r; |
| … | |
… | |
| 642 | |
767 | |
| 643 | #if ECB_STDFP |
768 | #if ECB_STDFP |
| 644 | memcpy (&r, &x, 8); |
769 | memcpy (&r, &x, 8); |
| 645 | #else |
770 | #else |
| 646 | /* slow emulation, works for anything but -0 */ |
771 | /* slow emulation, works for anything but -0 */ |
| 647 | ECB_EXTERN_C double frexp (double v, int *e); |
|
|
| 648 | uint64_t m; |
772 | uint64_t m; |
| 649 | int e; |
773 | int e; |
| 650 | |
774 | |
| 651 | if (x == 0e0 ) return 0; |
775 | if (x == 0e0 ) return 0x0000000000000000U; |
| 652 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
776 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
| 653 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
777 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
| 654 | if (x != x ) return 0X7ff7ffffffffffffU; |
778 | if (x != x ) return 0X7ff7ffffffffffffU; |
| 655 | |
779 | |
| 656 | m = frexp (x, &e) * 0x20000000000000U; |
780 | m = frexp (x, &e) * 0x20000000000000U; |
| … | |
… | |
| 658 | r = m & 0x8000000000000000;; |
782 | r = m & 0x8000000000000000;; |
| 659 | |
783 | |
| 660 | if (r) |
784 | if (r) |
| 661 | m = -m; |
785 | m = -m; |
| 662 | |
786 | |
| 663 | if (e < -1021) |
787 | if (e <= -1022) |
| 664 | { |
788 | { |
| 665 | m &= 0x1fffffffffffffU; |
789 | m &= 0x1fffffffffffffU; |
| 666 | m >>= (-1021 - e); |
790 | m >>= (-1021 - e); |
| 667 | e = -1022; |
791 | e = -1022; |
| 668 | } |
792 | } |
| … | |
… | |
| 683 | |
807 | |
| 684 | #if ECB_STDFP |
808 | #if ECB_STDFP |
| 685 | memcpy (&r, &x, 8); |
809 | memcpy (&r, &x, 8); |
| 686 | #else |
810 | #else |
| 687 | /* emulation, only works for normals and subnormals and +0 */ |
811 | /* emulation, only works for normals and subnormals and +0 */ |
| 688 | ECB_EXTERN_C double ldexp (double x, int e); |
|
|
| 689 | |
|
|
| 690 | int neg = x >> 63; |
812 | int neg = x >> 63; |
| 691 | int e = (x >> 52) & 0x7ffU; |
813 | int e = (x >> 52) & 0x7ffU; |
| 692 | |
814 | |
| 693 | x &= 0xfffffffffffffU; |
815 | x &= 0xfffffffffffffU; |
| 694 | |
816 | |
| … | |
… | |
| 696 | x |= 0x10000000000000U; |
818 | x |= 0x10000000000000U; |
| 697 | else |
819 | else |
| 698 | e = 1; |
820 | e = 1; |
| 699 | |
821 | |
| 700 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
822 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
| 701 | r = ldexp (x * (1. / 0x20000000000000U), e - 1022); |
823 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
| 702 | |
824 | |
| 703 | r = neg ? -r : r; |
825 | r = neg ? -r : r; |
| 704 | #endif |
826 | #endif |
| 705 | |
827 | |
| 706 | return r; |
828 | return r; |
