[PATCH v12 1/6] include: Implement ReadAcquire64.

[Rémi Bernon]

From: Rémi Bernon

---
 include/winnt.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/include/winnt.h b/include/winnt.h
index 722d2c3a542..0f4243ab75f 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -7117,6 +7117,22 @@ static FORCEINLINE LONG ReadAcquire( LONG const volatile *src )
     return value;
 }

+static FORCEINLINE LONG64 ReadAcquire64( LONG64 const volatile *src )
+{
+    LONG64 value;
+#if defined(__i386__) && _MSC_VER < 1700
+    __asm {
+        mov   eax, src
+        fild  qword ptr [eax]
+        fistp value
+    }
+#else
+    value = __WINE_LOAD64_NO_FENCE( (__int64 const volatile *)src );
+    __wine_memory_barrier_acq_rel();
+#endif
+    return value;
+}
+
 static FORCEINLINE LONG ReadNoFence( LONG const volatile *src )
 {
     LONG value = __WINE_LOAD32_NO_FENCE( (int const volatile *)src );
@@ -7331,6 +7347,17 @@ static FORCEINLINE LONG ReadAcquire( LONG const volatile *src )
     return value;
 }

+static FORCEINLINE LONG64 ReadAcquire64( LONG64 const volatile *src )
+{
+    LONG64 value;
+#ifdef __i386__
+    __asm__ __volatile__( "fildq %1\n\tfistpq %0" : "=m" (value) : "m" (*src) : "memory", "st" );
+#else
+    __WINE_ATOMIC_LOAD_ACQUIRE( src, &value );
+#endif
+    return value;
+}
+
 static FORCEINLINE LONG ReadNoFence( LONG const volatile *src )
 {
     LONG value;