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Comparing libecb/ecb.h (file contents):
Revision 1.126 by root, Sun Jan 5 02:58:29 2014 UTC vs.
Revision 1.133 by root, Fri May 16 15:15:13 2014 UTC

1/* 1/*
2 * libecb - http://software.schmorp.de/pkg/libecb 2 * libecb - http://software.schmorp.de/pkg/libecb
3 * 3 *
4 * Copyright (©) 2009-2013 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.
28 *
29 * Alternatively, the contents of this file may be used under the terms of
30 * the GNU General Public License ("GPL") version 2 or any later version,
31 * in which case the provisions of the GPL are applicable instead of
32 * the above. If you wish to allow the use of your version of this file
33 * only under the terms of the GPL and not to allow others to use your
34 * version of this file under the BSD license, indicate your decision
35 * by deleting the provisions above and replace them with the notice
36 * and other provisions required by the GPL. If you do not delete the
37 * provisions above, a recipient may use your version of this file under
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
… …
87 #else 98 #else
88 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 99 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
89 #endif 100 #endif
90#endif 101#endif
91 102
92#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
93#define ECB_C99 (__STDC_VERSION__ >= 199901L)
94#define ECB_C11 (__STDC_VERSION__ >= 201112L)
95#define ECB_CPP (__cplusplus+0) 103#define ECB_CPP (__cplusplus+0)
96#define ECB_CPP11 (__cplusplus >= 201103L) 104#define ECB_CPP11 (__cplusplus >= 201103L)
105
106#if ECB_CPP
107 #define ECB_C 0
108 #define ECB_STDC_VERSION 0
109#else
110 #define ECB_C 1
111 #define ECB_STDC_VERSION __STDC_VERSION__
112#endif
113
114#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
115#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
97 116
98#if ECB_CPP 117#if ECB_CPP
99 #define ECB_EXTERN_C extern "C" 118 #define ECB_EXTERN_C extern "C"
100 #define ECB_EXTERN_C_BEG ECB_EXTERN_C { 119 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
101 #define ECB_EXTERN_C_END } 120 #define ECB_EXTERN_C_END }
… …
134 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ 153 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
135 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 154 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
136 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ 155 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
137 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ 156 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
138 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 157 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
158 #elif __aarch64__
159 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
139 #elif (__sparc || __sparc__) && !__sparcv8 160 #elif (__sparc || __sparc__) && !__sparcv8
140 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") 161 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
141 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 162 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
142 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 163 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
143 #elif defined __s390__ || defined __s390x__ 164 #elif defined __s390__ || defined __s390x__
… …
165 186
166#ifndef ECB_MEMORY_FENCE 187#ifndef ECB_MEMORY_FENCE
167 #if ECB_GCC_VERSION(4,7) 188 #if ECB_GCC_VERSION(4,7)
168 /* see comment below (stdatomic.h) about the C11 memory model. */ 189 /* see comment below (stdatomic.h) about the C11 memory model. */
169 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) 190 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
191 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
192 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
170 193
171 /* The __has_feature syntax from clang is so misdesigned that we cannot use it 194 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
172 * without risking compile time errors with other compilers. We *could* 195 * without risking compile time errors with other compilers. We *could*
173 * define our own ecb_clang_has_feature, but I just can't be bothered to work 196 * define our own ecb_clang_has_feature, but I just can't be bothered to work
174 * around this shit time and again. 197 * around this shit time and again.
175 * #elif defined __clang && __has_feature (cxx_atomic) 198 * #elif defined __clang && __has_feature (cxx_atomic)
176 * // see comment below (stdatomic.h) about the C11 memory model. 199 * // see comment below (stdatomic.h) about the C11 memory model.
177 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) 200 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
201 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
202 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
178 */ 203 */
179 204
180 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ 205 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
181 #define ECB_MEMORY_FENCE __sync_synchronize () 206 #define ECB_MEMORY_FENCE __sync_synchronize ()
182 #elif _MSC_VER >= 1500 /* VC++ 2008 */ 207 #elif _MSC_VER >= 1500 /* VC++ 2008 */
… …
212 /* any fence other than seq_cst, which isn't very efficient for us. */ 237 /* any fence other than seq_cst, which isn't very efficient for us. */
213 /* Why that is, we don't know - either the C11 memory model is quite useless */ 238 /* Why that is, we don't know - either the C11 memory model is quite useless */
214 /* for most usages, or gcc and clang have a bug */ 239 /* for most usages, or gcc and clang have a bug */
215 /* I *currently* lean towards the latter, and inefficiently implement */ 240 /* I *currently* lean towards the latter, and inefficiently implement */
216 /* all three of ecb's fences as a seq_cst fence */ 241 /* all three of ecb's fences as a seq_cst fence */
242 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
243 /* for all __atomic_thread_fence's except seq_cst */
217 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) 244 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
218 #endif 245 #endif
219#endif 246#endif
220 247
221#ifndef ECB_MEMORY_FENCE 248#ifndef ECB_MEMORY_FENCE
… …
278 #define ecb_is_constant(expr) __builtin_constant_p (expr) 305 #define ecb_is_constant(expr) __builtin_constant_p (expr)
279 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 306 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
280 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 307 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
281#else 308#else
282 #define ecb_attribute(attrlist) 309 #define ecb_attribute(attrlist)
310
311 /* possible C11 impl for integral types
312 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
313 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
314
283 #define ecb_is_constant(expr) 0 315 #define ecb_is_constant(expr) 0
284 #define ecb_expect(expr,value) (expr) 316 #define ecb_expect(expr,value) (expr)
285 #define ecb_prefetch(addr,rw,locality) 317 #define ecb_prefetch(addr,rw,locality)
286#endif 318#endif
287 319
… …
573/* the only noteworthy exception is ancient armle, which uses order 43218765 */ 605/* the only noteworthy exception is ancient armle, which uses order 43218765 */
574#if 0 \ 606#if 0 \
575 || __i386 || __i386__ \ 607 || __i386 || __i386__ \
576 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ 608 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
577 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ 609 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
578 || defined __arm__ && defined __ARM_EABI__ \
579 || defined __s390__ || defined __s390x__ \ 610 || defined __s390__ || defined __s390x__ \
580 || defined __mips__ \ 611 || defined __mips__ \
581 || defined __alpha__ \ 612 || defined __alpha__ \
582 || defined __hppa__ \ 613 || defined __hppa__ \
583 || defined __ia64__ \ 614 || defined __ia64__ \
584 || defined __m68k__ \ 615 || defined __m68k__ \
585 || defined __m88k__ \ 616 || defined __m88k__ \
586 || defined __sh__ \ 617 || defined __sh__ \
587 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 618 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
619 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
620 || defined __aarch64__
588 #define ECB_STDFP 1 621 #define ECB_STDFP 1
589 #include <string.h> /* for memcpy */ 622 #include <string.h> /* for memcpy */
590#else 623#else
591 #define ECB_STDFP 0 624 #define ECB_STDFP 0
592#endif 625#endif

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