// warnings.\r
//\r
#ifndef UNREACHABLE\r
- #ifdef __GNUC__\r
+ #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 4)\r
///\r
/// Signal compilers and analyzers that this call is not reachable. It is\r
/// up to the compiler to remove any code past that point.\r
+ /// Not implemented by GCC 4.4 or earlier.\r
///\r
#define UNREACHABLE() __builtin_unreachable ()\r
#elif defined (__has_feature)\r
#define VA_COPY(Dest, Start) __va_copy (Dest, Start)\r
\r
#elif defined(__GNUC__) && !defined(NO_BUILTIN_VA_FUNCS)\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
//\r
// Use GCC built-in macros for variable argument lists.\r
//\r
\r
#define VA_COPY(Dest, Start) __builtin_va_copy (Dest, Start)\r
\r
+#endif\r
+\r
#else\r
///\r
/// Variable used to traverse the list of arguments. This type can vary by\r