7 files changed, 28 insertions, 15 deletions
diff --git a/atomic/unix/builtins.c b/atomic/unix/builtins.c
index 22b828c..5165e72 100644
--- a/atomic/unix/builtins.c
+++ b/atomic/unix/builtins.c
@@ -18,15 +18,20 @@
 
 #ifdef USE_ATOMICS_BUILTINS
 
-#if defined(__arm__) || defined(__powerpc__) || defined(__powerpc64__)
-#define WEAK_MEMORY_ORDERING 1
-#else
+#if defined(__i386__) || defined(__x86_64__) \
+    || defined(__s390__) || defined(__s390x__)
 #define WEAK_MEMORY_ORDERING 0
+#else
+#define WEAK_MEMORY_ORDERING 1
 #endif
 
 APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p)
 {
+#if defined (USE_ATOMICS_GENERIC64)
+    return apr__atomic_generic64_init(p);
+#else
     return APR_SUCCESS;
+#endif
 }
 
 APR_DECLARE(apr_uint32_t) apr_atomic_read32(volatile apr_uint32_t *mem)
@@ -114,7 +119,7 @@ APR_DECLARE(apr_uint32_t) apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint
 APR_DECLARE(void*) apr_atomic_casptr(volatile void **mem, void *ptr, const void *cmp)
 {
 #if HAVE__ATOMIC_BUILTINS
-    __atomic_compare_exchange_n(mem, (void **)&cmp, ptr, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
+    __atomic_compare_exchange_n(mem, (void *)&cmp, ptr, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
     return (void *)cmp;
 #else
     return (void *)__sync_val_compare_and_swap(mem, (void *)cmp, ptr);
diff --git a/atomic/unix/builtins64.c b/atomic/unix/builtins64.c
index 7d84225..f0cdb30 100644
--- a/atomic/unix/builtins64.c
+++ b/atomic/unix/builtins64.c
@@ -18,17 +18,18 @@
 
 #ifdef USE_ATOMICS_BUILTINS64
 
-#if defined(__arm__) || defined(__powerpc__) || defined(__powerpc64__)
-#define WEAK_MEMORY_ORDERING 1
-#else
+#if defined(__i386__) || defined(__x86_64__) \
+    || defined(__s390__) || defined(__s390x__)
 #define WEAK_MEMORY_ORDERING 0
+#else
+#define WEAK_MEMORY_ORDERING 1
 #endif
 
 APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem)
 {
 #if HAVE__ATOMIC_BUILTINS
     return __atomic_load_n(mem, __ATOMIC_SEQ_CST);
-#elif WEAK_MEMORY_ORDERING
+#elif WEAK_MEMORY_ORDERING || APR_SIZEOF_VOIDP < 8
     /* No __sync_load() available => apr_atomic_add64(mem, 0) */
     return __sync_fetch_and_add(mem, 0);
 #else
@@ -40,7 +41,7 @@ APR_DECLARE(void) apr_atomic_set64(volatile apr_uint64_t *mem, apr_uint64_t val)
 {
 #if HAVE__ATOMIC_BUILTINS
     __atomic_store_n(mem, val, __ATOMIC_SEQ_CST);
-#elif WEAK_MEMORY_ORDERING
+#elif WEAK_MEMORY_ORDERING || APR_SIZEOF_VOIDP < 8
     /* No __sync_store() available => apr_atomic_xchg64(mem, val) */
     __sync_synchronize();
     __sync_lock_test_and_set(mem, val);
diff --git a/atomic/unix/ia32.c b/atomic/unix/ia32.c
index cdb7a52..ce92c22 100644
--- a/atomic/unix/ia32.c
+++ b/atomic/unix/ia32.c
@@ -20,7 +20,7 @@
 
 APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p)
 {
-#if defined (NEED_ATOMICS_GENERIC64)
+#if defined(USE_ATOMICS_GENERIC64)
     return apr__atomic_generic64_init(p);
 #else
     return APR_SUCCESS;
diff --git a/atomic/unix/mutex64.c b/atomic/unix/mutex64.c
index 9fc44af..4ea4d8f 100644
--- a/atomic/unix/mutex64.c
+++ b/atomic/unix/mutex64.c
@@ -17,7 +17,7 @@
 #include "apr_arch_atomic.h"
 #include "apr_thread_mutex.h"
 
-#if defined(USE_ATOMICS_GENERIC) || defined (NEED_ATOMICS_GENERIC64)
+#if defined(USE_ATOMICS_GENERIC64)
 
 #include <stdlib.h>
 
@@ -96,7 +96,14 @@ apr_status_t apr__atomic_generic64_init(apr_pool_t *p)
 
 APR_DECLARE(apr_uint64_t) apr_atomic_read64(volatile apr_uint64_t *mem)
 {
-    return *mem;
+    apr_uint64_t cur_value;
+    DECLARE_MUTEX_LOCKED(mutex, mem);
+
+    cur_value = *mem;
+
+    MUTEX_UNLOCK(mutex);
+
+    return cur_value;
 }
 
 APR_DECLARE(void) apr_atomic_set64(volatile apr_uint64_t *mem, apr_uint64_t val)
diff --git a/atomic/unix/ppc.c b/atomic/unix/ppc.c
index 46554af..1ae727f 100644
--- a/atomic/unix/ppc.c
+++ b/atomic/unix/ppc.c
@@ -26,7 +26,7 @@
 
 APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p)
 {
-#if defined (NEED_ATOMICS_GENERIC64)
+#if defined(USE_ATOMICS_GENERIC64)
     return apr__atomic_generic64_init(p);
 #else
     return APR_SUCCESS;
diff --git a/atomic/unix/s390.c b/atomic/unix/s390.c
index ae5d040..c036128 100644
--- a/atomic/unix/s390.c
+++ b/atomic/unix/s390.c
@@ -20,7 +20,7 @@
 
 APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p)
 {
-#if defined (NEED_ATOMICS_GENERIC64)
+#if defined(USE_ATOMICS_GENERIC64)
     return apr__atomic_generic64_init(p);
 #else
     return APR_SUCCESS;
diff --git a/atomic/unix/solaris.c b/atomic/unix/solaris.c
index 9bc2de2..994354e 100644
--- a/atomic/unix/solaris.c
+++ b/atomic/unix/solaris.c
@@ -22,7 +22,7 @@
 
 APR_DECLARE(apr_status_t) apr_atomic_init(apr_pool_t *p)
 {
-#if defined (NEED_ATOMICS_GENERIC64)
+#if defined(USE_ATOMICS_GENERIC64)
     return apr__atomic_generic64_init(p);
 #else
     return APR_SUCCESS;