diff options
| -rw-r--r-- | MdePkg/Include/Base.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h index 00cce609f5..69ebba345e 100644 --- a/MdePkg/Include/Base.h +++ b/MdePkg/Include/Base.h @@ -332,7 +332,20 @@ struct _LIST_ENTRY { // return Result
// }
//
+#if defined(__GNUC__)
+//
+// In GCC compiler, its behavior for statically linked varargs is different with MSFT tool chain.
+// Should use __builtin_* intrinsic functions provided by GCC compiler to access varargs.
+//
+typedef __builtin_va_list VA_LIST;
+
+#define VA_START(Marker, Parameter) __builtin_va_start(Marker, Parameter)
+
+#define VA_ARG(Marker, TYPE) __builtin_va_arg(Marker, TYPE)
+#define VA_END(Marker) __builtin_va_end(Marker)
+
+#else
/**
Return the size of argument that has been aligned to sizeof (UINTN).
@@ -394,6 +407,8 @@ typedef CHAR8 *VA_LIST; **/
#define VA_END(Marker) (Marker = (VA_LIST) 0)
+#endif
+
/**
Macro that returns the byte offset of a field in a data structure.
|