diff options
| -rw-r--r-- | MdePkg/Include/Base.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h index 7dbf938..e03fa82 100644 --- a/MdePkg/Include/Base.h +++ b/MdePkg/Include/Base.h @@ -590,6 +590,30 @@ struct _LIST_ENTRY { #define VA_COPY(Dest, Start) __va_copy (Dest, Start)
#elif defined(__GNUC__) && !defined(NO_BUILTIN_VA_FUNCS)
+
+#if defined(MDE_CPU_X64) && !defined(NO_MSABI_VA_FUNCS)
+//
+// X64 only. Use MS ABI version of GCC built-in macros for variable argument lists.
+//
+///
+/// Both GCC and LLVM 3.8 for X64 support new variable argument intrinsics for Microsoft ABI
+///
+
+///
+/// Variable used to traverse the list of arguments. This type can vary by
+/// implementation and could be an array or structure.
+///
+typedef __builtin_ms_va_list VA_LIST;
+
+#define VA_START(Marker, Parameter) __builtin_ms_va_start (Marker, Parameter)
+
+#define VA_ARG(Marker, TYPE) ((sizeof (TYPE) < sizeof (UINTN)) ? (TYPE)(__builtin_va_arg (Marker, UINTN)) : (TYPE)(__builtin_va_arg (Marker, TYPE)))
+
+#define VA_END(Marker) __builtin_ms_va_end (Marker)
+
+#define VA_COPY(Dest, Start) __builtin_ms_va_copy (Dest, Start)
+
+#else
//
// Use GCC built-in macros for variable argument lists.
//
@@ -608,6 +632,8 @@ typedef __builtin_va_list VA_LIST; #define VA_COPY(Dest, Start) __builtin_va_copy (Dest, Start)
+#endif
+
#else
///
/// Variable used to traverse the list of arguments. This type can vary by
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