1 files changed, 60 insertions, 3 deletions

diff --git a/sys/arch/powerpc/include/va-ppc.h b/sys/arch/powerpc/include/va-ppc.h
index a86ba278e20..4bf23184a6c 100644
--- a/sys/arch/powerpc/include/va-ppc.h
+++ b/sys/arch/powerpc/include/va-ppc.h
@@ -1,5 +1,6 @@
-/* GNU C varargs support for the PowerPC with V.4 calling */
+/* GNU C varargs support for the PowerPC with either the V.4 or Windows NT calling sequences */
 
+#ifndef _WIN32
 /* System V.4 support */
 /* Define __gnuc_va_list.  */
 
@@ -15,7 +16,7 @@
 
 /* Note that the names in this structure are in the user's namespace, but
    that the V.4 abi explicitly states that these names should be used.  */
-typedef struct __gnuc_va_list__ {
+typedef struct __va_list_tag {
   char gpr;			/* index into the array of 8 GPRs stored in the
 				   register save area gpr=0 corresponds to r3,
 				   gpr=1 to r4, etc. */
@@ -76,8 +77,8 @@ typedef struct {
 #define __va_start_common(AP, FAKE)					\
 __extension__ ({							\
    register int __words = __va_words - FAKE;				\
-   (AP) = (struct __gnuc_va_list__ *)__builtin_alloca(sizeof(struct __gnuc_va_list__));   \
 									\
+   (AP) = (struct __va_list_tag *)__builtin_alloca(sizeof(struct __va_list_tag));   \
    (AP)->gpr = (__words < 8) ? __words : 8;				\
    (AP)->fpr = __va_fregno - 33;					\
    (AP)->reg_save_area = (((char *) __builtin_frame_address (0))	\
@@ -175,3 +176,59 @@ __extension__ (*({							\
 
 #endif /* __VA_PPC_H__ */
 #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
+
+
+#else
+/* Windows NT */
+/* Define __gnuc_va_list.  */
+
+#ifndef __GNUC_VA_LIST
+#define __GNUC_VA_LIST
+typedef char *__gnuc_va_list;
+#endif /* not __GNUC_VA_LIST */
+
+/* If this is for internal libc use, don't define anything but
+   __gnuc_va_list.  */
+#if defined (_STDARG_H) || defined (_VARARGS_H)
+
+#define __va_start_common(AP, LASTARG, FAKE)				\
+  ((__builtin_saveregs ()), ((AP) = ((char *) &LASTARG) + __va_rounded_size (AP)), 0)
+
+#ifdef _STDARG_H /* stdarg.h support */
+
+/* Calling __builtin_next_arg gives the proper error message if LASTARG is
+   not indeed the last argument.  */
+#define va_start(AP,LASTARG)						\
+  (__builtin_saveregs (),						\
+   (AP) = __builtin_next_arg (LASTARG),					\
+   0)
+
+#else /* varargs.h support */
+
+#define va_start(AP)							\
+  (__builtin_saveregs (),						\
+   (AP) = __builtin_next_arg (__va_1st_arg) - sizeof (int),		\
+   0)
+
+#define va_alist __va_1st_arg
+#define va_dcl register int __va_1st_arg; ...
+
+#endif /* _STDARG_H */
+
+#define __va_rounded_size(TYPE) ((sizeof (TYPE) + 3) & ~3)
+#define __va_align(AP, TYPE)						\
+     ((((unsigned long)(AP)) + ((sizeof (TYPE) >= 8) ? 7 : 3))		\
+      & ~((sizeof (TYPE) >= 8) ? 7 : 3))
+
+#define va_arg(AP,TYPE)							\
+( *(TYPE *)((AP = (char *) (__va_align(AP, TYPE)			\
+			    + __va_rounded_size(TYPE)))			\
+	    - __va_rounded_size(TYPE)))
+
+#define va_end(AP)	((void)0)
+
+/* Copy __gnuc_va_list into another variable of this type.  */
+#define __va_copy(dest, src) (dest) = (src)
+
+#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
+#endif /* Windows NT */