--- libecb/ecb.h	2014/01/05 02:58:29	1.126
+++ libecb/ecb.h	2014/06/10 01:07:18	1.135
@@ -1,7 +1,7 @@
 /*
  * libecb - http://software.schmorp.de/pkg/libecb
  *
- * Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de>
+ * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
  * Copyright (©) 2011 Emanuele Giaquinta
  * All rights reserved.
  *
@@ -25,6 +25,17 @@
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
  * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
  */
 
 #ifndef ECB_H
@@ -89,13 +100,21 @@
   #endif
 #endif
 
-#define ECB_C     (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
-#define ECB_C99   (__STDC_VERSION__ >= 199901L)
-#define ECB_C11   (__STDC_VERSION__ >= 201112L)
 #define ECB_CPP   (__cplusplus+0)
 #define ECB_CPP11 (__cplusplus >= 201103L)
 
 #if ECB_CPP
+  #define ECB_C            0
+  #define ECB_STDC_VERSION 0
+#else
+  #define ECB_C            1
+  #define ECB_STDC_VERSION __STDC_VERSION__
+#endif
+
+#define ECB_C99   (ECB_STDC_VERSION >= 199901L)
+#define ECB_C11   (ECB_STDC_VERSION >= 201112L)
+
+#if ECB_CPP
   #define ECB_EXTERN_C extern "C"
   #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
   #define ECB_EXTERN_C_END }
@@ -136,6 +155,8 @@
     #elif defined __ARM_ARCH_7__  || defined __ARM_ARCH_7A__  \
        || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
       #define ECB_MEMORY_FENCE         __asm__ __volatile__ ("dmb"      : : : "memory")
+    #elif __aarch64__
+      #define ECB_MEMORY_FENCE         __asm__ __volatile__ ("dmb ish"  : : : "memory")
     #elif (__sparc || __sparc__) && !__sparcv8
       #define ECB_MEMORY_FENCE         __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
       #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad"                            : : : "memory")
@@ -167,6 +188,8 @@
   #if ECB_GCC_VERSION(4,7)
     /* see comment below (stdatomic.h) about the C11 memory model. */
     #define ECB_MEMORY_FENCE         __atomic_thread_fence (__ATOMIC_SEQ_CST)
+    #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
+    #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
 
   /* The __has_feature syntax from clang is so misdesigned that we cannot use it
    * without risking compile time errors with other compilers. We *could*
@@ -175,6 +198,8 @@
    * #elif defined __clang && __has_feature (cxx_atomic)
    *   // see comment below (stdatomic.h) about the C11 memory model.
    *   #define ECB_MEMORY_FENCE         __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
+   *   #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
+   *   #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
    */
 
   #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
@@ -214,6 +239,8 @@
     /* for most usages, or gcc and clang have a bug */
     /* I *currently* lean towards the latter, and inefficiently implement */
     /* all three of ecb's fences as a seq_cst fence */
+    /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
+    /* for all __atomic_thread_fence's except seq_cst */
     #define ECB_MEMORY_FENCE         atomic_thread_fence (memory_order_seq_cst)
   #endif
 #endif
@@ -280,6 +307,11 @@
   #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
 #else
   #define ecb_attribute(attrlist)
+
+  /* possible C11 impl for integral types
+  typedef struct ecb_is_constant_struct ecb_is_constant_struct;
+  #define ecb_is_constant(expr)          _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
+
   #define ecb_is_constant(expr)          0
   #define ecb_expect(expr,value)         (expr)
   #define ecb_prefetch(addr,rw,locality)
@@ -292,6 +324,12 @@
   #define ecb_decltype(x) __typeof(x)
 #endif
 
+#if _MSC_VER >= 1300
+  #define ecb_deprecated __declspec(deprecated)
+#else
+  #define ecb_deprecated ecb_attribute ((__deprecated__))
+#endif
+
 #define ecb_noinline   ecb_attribute ((__noinline__))
 #define ecb_unused     ecb_attribute ((__unused__))
 #define ecb_const      ecb_attribute ((__const__))
@@ -575,7 +613,6 @@
     || __i386 || __i386__ \
     || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
     || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
-    || defined __arm__ && defined __ARM_EABI__ \
     || defined __s390__ || defined __s390x__ \
     || defined __mips__ \
     || defined __alpha__ \
@@ -584,7 +621,9 @@
     || defined __m68k__ \
     || defined __m88k__ \
     || defined __sh__ \
-    || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
+    || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
+    || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
+    || defined __aarch64__
   #define ECB_STDFP 1
   #include <string.h> /* for memcpy */
 #else