+#elif defined(_M_ARM) || defined(_M_ARM64)\r
+//\r
+// MSFT ARM variable argument list support.\r
+//\r
+\r
+typedef char* VA_LIST;\r
+\r
+#define VA_START(Marker, Parameter) __va_start (&Marker, &Parameter, _INT_SIZE_OF (Parameter), __alignof(Parameter), &Parameter)\r
+#define VA_ARG(Marker, TYPE) (*(TYPE *) ((Marker += _INT_SIZE_OF (TYPE) + ((-(INTN)Marker) & (sizeof(TYPE) - 1))) - _INT_SIZE_OF (TYPE)))\r
+#define VA_END(Marker) (Marker = (VA_LIST) 0)\r
+#define VA_COPY(Dest, Start) ((void)((Dest) = (Start)))\r
+\r
+#elif defined(__GNUC__)\r
+\r
+#if defined(MDE_CPU_X64) && !defined(NO_MSABI_VA_FUNCS)\r
+//\r
+// X64 only. Use MS ABI version of GCC built-in macros for variable argument lists.\r
+//\r
+///\r
+/// Both GCC and LLVM 3.8 for X64 support new variable argument intrinsics for Microsoft ABI\r
+///\r
+\r
+///\r
+/// Variable used to traverse the list of arguments. This type can vary by\r
+/// implementation and could be an array or structure.\r
+///\r
+typedef __builtin_ms_va_list VA_LIST;\r
+\r
+#define VA_START(Marker, Parameter) __builtin_ms_va_start (Marker, Parameter)\r
+\r
+#define VA_ARG(Marker, TYPE) ((sizeof (TYPE) < sizeof (UINTN)) ? (TYPE)(__builtin_va_arg (Marker, UINTN)) : (TYPE)(__builtin_va_arg (Marker, TYPE)))\r
+\r
+#define VA_END(Marker) __builtin_ms_va_end (Marker)\r
+\r
+#define VA_COPY(Dest, Start) __builtin_ms_va_copy (Dest, Start)\r
+\r
+#else\r