Add support for Windows ARM builds

16 files changed, 95 insertions, 94 deletions

diff --git a/src/google/protobuf/stubs/atomicops.h b/src/google/protobuf/stubs/atomicops.h
index 10a71ed4..c25492f3 100644
--- a/src/google/protobuf/stubs/atomicops.h
+++ b/src/google/protobuf/stubs/atomicops.h
@@ -123,8 +123,8 @@ Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
 // ensure that no later memory access can be reordered ahead of the operation.
 // "Release" operations ensure that no previous memory access can be reordered
 // after the operation.  "Barrier" operations have both "Acquire" and "Release"
-// semantics.   A MemoryBarrier() has "Barrier" semantics, but does no memory
-// access.
+// semantics.   A MemoryBarrierInternal() has "Barrier" semantics, but does no
+// memory access.
 Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
                                 Atomic32 old_value,
                                 Atomic32 new_value);
@@ -132,10 +132,10 @@ Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
                                 Atomic32 old_value,
                                 Atomic32 new_value);
 
-#if defined(__MINGW32__) && defined(MemoryBarrier)
-#undef MemoryBarrier
-#endif
-void MemoryBarrier();
+// This function was renamed from MemoryBarrier to MemoryBarrierInternal
+// because MemoryBarrier is a define in Windows ARM builds and we do not
+// undefine it because we call it from this function.
+void MemoryBarrierInternal();
 void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value);
 void Acquire_Store(volatile Atomic32* ptr, Atomic32 value);
 void Release_Store(volatile Atomic32* ptr, Atomic32 value);
@@ -180,7 +180,7 @@ Atomic64 Release_Load(volatile const Atomic64* ptr);
 #include <google/protobuf/stubs/atomicops_internals_tsan.h>
 // MSVC.
 #elif defined(_MSC_VER)
-#if defined(GOOGLE_PROTOBUF_ARCH_IA32) || defined(GOOGLE_PROTOBUF_ARCH_X64)
+#if defined(GOOGLE_PROTOBUF_ARCH_IA32) || defined(GOOGLE_PROTOBUF_ARCH_X64) || defined(GOOGLE_PROTOBUF_ARCH_ARM)
 #include <google/protobuf/stubs/atomicops_internals_x86_msvc.h>
 #else
 #error GOOGLE_PROTOBUF_ATOMICOPS_ERROR
diff --git a/src/google/protobuf/stubs/atomicops_internals_arm64_gcc.h b/src/google/protobuf/stubs/atomicops_internals_arm64_gcc.h
index 0a2d2b89..9a69d21a 100644
--- a/src/google/protobuf/stubs/atomicops_internals_arm64_gcc.h
+++ b/src/google/protobuf/stubs/atomicops_internals_arm64_gcc.h
@@ -37,7 +37,7 @@ namespace google {
 namespace protobuf {
 namespace internal {
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   __asm__ __volatile__ ("dmb ish" ::: "memory");  // NOLINT
 }
 
@@ -117,9 +117,9 @@ inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
 
 inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
                                         Atomic32 increment) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic32 result = NoBarrier_AtomicIncrement(ptr, increment);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 
   return result;
 }
@@ -128,7 +128,7 @@ inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
   Atomic32 prev = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 
   return prev;
 }
@@ -136,7 +136,7 @@ inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
 inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic32 prev = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
 
   return prev;
@@ -148,7 +148,7 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
@@ -178,7 +178,7 @@ inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
@@ -253,9 +253,9 @@ inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr,
 
 inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr,
                                         Atomic64 increment) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic64 result = NoBarrier_AtomicIncrement(ptr, increment);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 
   return result;
 }
@@ -264,7 +264,7 @@ inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
                                        Atomic64 old_value,
                                        Atomic64 new_value) {
   Atomic64 prev = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 
   return prev;
 }
@@ -272,7 +272,7 @@ inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
 inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
                                        Atomic64 old_value,
                                        Atomic64 new_value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic64 prev = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
 
   return prev;
@@ -284,7 +284,7 @@ inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
 
 inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
@@ -314,7 +314,7 @@ inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_arm_gcc.h b/src/google/protobuf/stubs/atomicops_internals_arm_gcc.h
index 90e727b0..6e2de67f 100644
--- a/src/google/protobuf/stubs/atomicops_internals_arm_gcc.h
+++ b/src/google/protobuf/stubs/atomicops_internals_arm_gcc.h
@@ -115,17 +115,17 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
 }
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   pLinuxKernelMemoryBarrier();
 }
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
@@ -135,12 +135,12 @@ inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
 
 inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
   Atomic32 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_arm_qnx.h b/src/google/protobuf/stubs/atomicops_internals_arm_qnx.h
index 17dfaa51..cd97e0c9 100644
--- a/src/google/protobuf/stubs/atomicops_internals_arm_qnx.h
+++ b/src/google/protobuf/stubs/atomicops_internals_arm_qnx.h
@@ -110,17 +110,17 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
 }
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   __sync_synchronize();
 }
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
@@ -130,12 +130,12 @@ inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
 
 inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
   Atomic32 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_generic_c11_atomic.h b/src/google/protobuf/stubs/atomicops_internals_generic_c11_atomic.h
index 7bc584eb..44ef9c9e 100644
--- a/src/google/protobuf/stubs/atomicops_internals_generic_c11_atomic.h
+++ b/src/google/protobuf/stubs/atomicops_internals_generic_c11_atomic.h
@@ -52,7 +52,7 @@ typedef volatile std::atomic<Atomic32>* AtomicLocation32;
 static_assert(sizeof(*(AtomicLocation32) nullptr) == sizeof(Atomic32),
               "incompatible 32-bit atomic layout");
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
 #if defined(__GLIBCXX__)
   // Work around libstdc++ bug 51038 where atomic_thread_fence was declared but
   // not defined, leading to the linker complaining about undefined references.
@@ -119,7 +119,7 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   ((AtomicLocation32)ptr)->store(value, std::memory_order_relaxed);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
@@ -135,7 +135,7 @@ inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return ((AtomicLocation32)ptr)->load(std::memory_order_relaxed);
 }
 
@@ -202,7 +202,7 @@ inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
 
 inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
   ((AtomicLocation64)ptr)->store(value, std::memory_order_relaxed);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
@@ -218,7 +218,7 @@ inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return ((AtomicLocation64)ptr)->load(std::memory_order_relaxed);
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h b/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
index 7f17b30d..0b0b06ce 100644
--- a/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
+++ b/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
@@ -78,7 +78,7 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
   __atomic_store_n(ptr, value, __ATOMIC_RELAXED);
 }
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   __sync_synchronize();
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_macosx.h b/src/google/protobuf/stubs/atomicops_internals_macosx.h
index 79633241..c242ef73 100644
--- a/src/google/protobuf/stubs/atomicops_internals_macosx.h
+++ b/src/google/protobuf/stubs/atomicops_internals_macosx.h
@@ -73,7 +73,7 @@ inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
   return OSAtomicAdd32Barrier(increment, const_cast<Atomic32*>(ptr));
 }
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   OSMemoryBarrier();
 }
 
@@ -103,11 +103,11 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
@@ -117,12 +117,12 @@ inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
 
 inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
   Atomic32 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
@@ -193,11 +193,11 @@ inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
 
 inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
@@ -207,12 +207,12 @@ inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) {
 
 inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
   Atomic64 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_mips_gcc.h b/src/google/protobuf/stubs/atomicops_internals_mips_gcc.h
index f5837c9e..6ce6820e 100644
--- a/src/google/protobuf/stubs/atomicops_internals_mips_gcc.h
+++ b/src/google/protobuf/stubs/atomicops_internals_mips_gcc.h
@@ -125,8 +125,8 @@ inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
 // ensure that no later memory access can be reordered ahead of the operation.
 // "Release" operations ensure that no previous memory access can be reordered
 // after the operation.  "Barrier" operations have both "Acquire" and "Release"
-// semantics.   A MemoryBarrier() has "Barrier" semantics, but does no memory
-// access.
+// semantics.   A MemoryBarrierInternal() has "Barrier" semantics, but does no
+// memory access.
 inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
@@ -149,17 +149,17 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
 }
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   __asm__ __volatile__("sync" : : : "memory");
 }
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
@@ -169,12 +169,12 @@ inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
 
 inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
   Atomic32 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
@@ -247,9 +247,9 @@ inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr,
 
 inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr,
                                         Atomic64 increment) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic64 res = NoBarrier_AtomicIncrement(ptr, increment);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return res;
 }
 
@@ -257,20 +257,20 @@ inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr,
 // ensure that no later memory access can be reordered ahead of the operation.
 // "Release" operations ensure that no previous memory access can be reordered
 // after the operation.  "Barrier" operations have both "Acquire" and "Release"
-// semantics.   A MemoryBarrier() has "Barrier" semantics, but does no memory
-// access.
+// semantics.   A MemoryBarrierInternal() has "Barrier" semantics, but does no
+// memory access.
 inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
                                        Atomic64 old_value,
                                        Atomic64 new_value) {
   Atomic64 res = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return res;
 }
 
 inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
                                        Atomic64 old_value,
                                        Atomic64 new_value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
 }
 
@@ -280,11 +280,11 @@ inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
 
 inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
@@ -294,12 +294,12 @@ inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) {
 
 inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
   Atomic64 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 #endif
diff --git a/src/google/protobuf/stubs/atomicops_internals_power.h b/src/google/protobuf/stubs/atomicops_internals_power.h
index b8a42f21..cad9f1e3 100644
--- a/src/google/protobuf/stubs/atomicops_internals_power.h
+++ b/src/google/protobuf/stubs/atomicops_internals_power.h
@@ -93,7 +93,7 @@ inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
   return result;
 }
 
-inline void MemoryBarrier(void) {
+inline void MemoryBarrierInternal(void) {
   asm volatile (
       "       lwsync                          \n\t"
       "       isync                           \n\t"
diff --git a/src/google/protobuf/stubs/atomicops_internals_ppc_gcc.h b/src/google/protobuf/stubs/atomicops_internals_ppc_gcc.h
index 8231a578..d477dc6d 100644
--- a/src/google/protobuf/stubs/atomicops_internals_ppc_gcc.h
+++ b/src/google/protobuf/stubs/atomicops_internals_ppc_gcc.h
@@ -97,22 +97,22 @@ inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32 *ptr,
 
 inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32 *ptr,
                                         Atomic32 increment) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic32 res = NoBarrier_AtomicIncrement(ptr, increment);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return res;
 }
 
 inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32 *ptr,
                                        Atomic32 old_value, Atomic32 new_value) {
   Atomic32 res = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return res;
 }
 
 inline Atomic32 Release_CompareAndSwap(volatile Atomic32 *ptr,
                                        Atomic32 old_value, Atomic32 new_value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic32 res = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
   return res;
 }
@@ -121,15 +121,15 @@ inline void NoBarrier_Store(volatile Atomic32 *ptr, Atomic32 value) {
   *ptr = value;
 }
 
-inline void MemoryBarrier() { __asm__ __volatile__("sync" : : : "memory"); }
+inline void MemoryBarrierInternal() { __asm__ __volatile__("sync" : : : "memory"); }
 
 inline void Acquire_Store(volatile Atomic32 *ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic32 *ptr, Atomic32 value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   *ptr = value;
 }
 
@@ -137,12 +137,12 @@ inline Atomic32 NoBarrier_Load(volatile const Atomic32 *ptr) { return *ptr; }
 
 inline Atomic32 Acquire_Load(volatile const Atomic32 *ptr) {
   Atomic32 value = *ptr;
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return value;
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32 *ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_solaris.h b/src/google/protobuf/stubs/atomicops_internals_solaris.h
index d8057ecd..baecb993 100644
--- a/src/google/protobuf/stubs/atomicops_internals_solaris.h
+++ b/src/google/protobuf/stubs/atomicops_internals_solaris.h
@@ -54,16 +54,16 @@ inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
   return (Atomic32)atomic_add_32_nv((volatile uint32_t*)ptr, (uint32_t)increment);
 }
 
-inline void MemoryBarrier(void) {
+inline void MemoryBarrierInternal(void) {
 	membar_producer();
 	membar_consumer();
 }
 
 inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
                                         Atomic32 increment) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic32 ret = NoBarrier_AtomicIncrement(ptr, increment);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 
   return ret;
 }
@@ -72,7 +72,7 @@ inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
   Atomic32 ret = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-  MemoryBarrier();
+  MemoryBarrierInternal();
 
   return ret;
 }
@@ -80,7 +80,7 @@ inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
 inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
 }
 
@@ -129,9 +129,9 @@ inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 incre
 }
 
 inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 increment) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   Atomic64 ret = atomic_add_64_nv((volatile uint64_t*)ptr, increment);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return ret;
 }
 
@@ -139,14 +139,14 @@ inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
                                        Atomic64 old_value,
                                        Atomic64 new_value) {
   Atomic64 ret = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return ret;
 }
 
 inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
                                        Atomic64 old_value,
                                        Atomic64 new_value) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_tsan.h b/src/google/protobuf/stubs/atomicops_internals_tsan.h
index 0c903545..676380b1 100644
--- a/src/google/protobuf/stubs/atomicops_internals_tsan.h
+++ b/src/google/protobuf/stubs/atomicops_internals_tsan.h
@@ -206,7 +206,7 @@ inline Atomic64 Release_CompareAndSwap(volatile Atomic64 *ptr,
   return cmp;
 }
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   __tsan_atomic_thread_fence(__tsan_memory_order_seq_cst);
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_x86_gcc.h b/src/google/protobuf/stubs/atomicops_internals_x86_gcc.h
index edccc59d..e80121fd 100644
--- a/src/google/protobuf/stubs/atomicops_internals_x86_gcc.h
+++ b/src/google/protobuf/stubs/atomicops_internals_x86_gcc.h
@@ -119,18 +119,18 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
 
 // 64-bit implementations of memory barrier can be simpler, because it
 // "mfence" is guaranteed to exist.
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   __asm__ __volatile__("mfence" : : : "memory");
 }
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 #else
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   if (AtomicOps_Internalx86CPUFeatures.has_sse2) {
     __asm__ __volatile__("mfence" : : : "memory");
   } else {  // mfence is faster but not present on PIII
@@ -168,7 +168,7 @@ inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
@@ -225,7 +225,7 @@ inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
 
 inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
   *ptr = value;
-  MemoryBarrier();
+  MemoryBarrierInternal();
 }
 
 inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
@@ -262,7 +262,7 @@ inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
diff --git a/src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc b/src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc
index 741b164f..74a1bd4e 100644
--- a/src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc
+++ b/src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc
@@ -44,9 +44,10 @@ namespace google {
 namespace protobuf {
 namespace internal {
 
-inline void MemoryBarrier() {
-  // We use MemoryBarrier from WinNT.h
-  ::MemoryBarrier();
+inline void MemoryBarrierInternal() {
+  // On ARM this is a define while on x86/x64 this is
+  // a function declared in WinNT.h
+  MemoryBarrier();
 }
 
 Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
diff --git a/src/google/protobuf/stubs/atomicops_internals_x86_msvc.h b/src/google/protobuf/stubs/atomicops_internals_x86_msvc.h
index e53a641f..34d60d98 100644
--- a/src/google/protobuf/stubs/atomicops_internals_x86_msvc.h
+++ b/src/google/protobuf/stubs/atomicops_internals_x86_msvc.h
@@ -82,7 +82,7 @@ inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
@@ -125,7 +125,7 @@ inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
 }
 
 inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
-  MemoryBarrier();
+  MemoryBarrierInternal();
   return *ptr;
 }
 
diff --git a/src/google/protobuf/stubs/platform_macros.h b/src/google/protobuf/stubs/platform_macros.h
index 8b7f224f..7a54060d 100644
--- a/src/google/protobuf/stubs/platform_macros.h
+++ b/src/google/protobuf/stubs/platform_macros.h
@@ -47,7 +47,7 @@
 #elif defined(__QNX__)
 #define GOOGLE_PROTOBUF_ARCH_ARM_QNX 1
 #define GOOGLE_PROTOBUF_ARCH_32_BIT 1
-#elif defined(__ARMEL__)
+#elif defined(_M_ARM) || defined(__ARMEL__)
 #define GOOGLE_PROTOBUF_ARCH_ARM 1
 #define GOOGLE_PROTOBUF_ARCH_32_BIT 1
 #elif defined(__aarch64__)