Fixed issues compiling for Apple gcc on IA-32

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Include / EfiStdArg.h

diff --git a/EdkCompatibilityPkg/Foundation/Include/EfiStdArg.h b/EdkCompatibilityPkg/Foundation/Include/EfiStdArg.h
index d125cedac725b3b5a26163df71184eaa51433335..989b87326b1e78bf542de7d8f9e3a717baabb0dc 100644 (file)
--- a/EdkCompatibilityPkg/Foundation/Include/EfiStdArg.h
+++ b/EdkCompatibilityPkg/Foundation/Include/EfiStdArg.h
@@ -60,6 +60,25 @@ Abstract:
 \r
 #define _EFI_INT_SIZE_OF(n) ((sizeof (n) + sizeof (UINTN) - 1) &~(sizeof (UINTN) - 1))\r
 \r
+#if defined(__GNUC__)\r
+//\r
+// Use GCC built-in macros for variable argument lists.\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_va_list VA_LIST;\r
+\r
+#define VA_START(Marker, Parameter)  __builtin_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_va_end (Marker)\r
+\r
+#else\r
+\r
 //\r
 // Also support coding convention rules for var arg macros\r
 //\r
@@ -70,6 +89,9 @@ typedef CHAR8 *VA_LIST;
 #define VA_ARG(ap, t)   (*(t *) ((ap += _EFI_INT_SIZE_OF (t)) - _EFI_INT_SIZE_OF (t)))\r
 #define VA_END(ap)      (ap = (VA_LIST) 0)\r
 \r
+#endif\r
+\r
+\r
 #endif\r
 \r
 #endif\r