OK va_list, va_start, va_arg, and va_end

1 files changed, 28 insertions, 0 deletions

diff --git a/include/Runtime.PPCEABI.H/__va_arg.h b/include/Runtime.PPCEABI.H/__va_arg.h
index 3e6751e43f..aed93a5e33 100644
--- a/include/Runtime.PPCEABI.H/__va_arg.h
+++ b/include/Runtime.PPCEABI.H/__va_arg.h
@@ -3,4 +3,32 @@
 
 #include "dolphin/types.h"
 
+// not sure what the members are. OK when the struct is 12 bytes.
+typedef struct __va_list_struct {
+    u8 data[12];
+};
+
+typedef __va_list_struct __va_list[1];
+
+extern "C" void __va_arg(void*, int);
+
+#if IN_VSCODE_EDITOR
+#define __builtin_va_info(...)
+#define _var_arg_typeof(...)
+#endif
+
+
+// from defined-string in mwcceppc.exe:
+// __builtin_va_info: initialize the __va_list_struct
+// _var_arg_typeof: convert type to integer for __va_arg
+#define __va_start(list, fmt) __builtin_va_info(&list)
+#define __va_arg(list, type) (*((type*)__va_arg(ap, _var_arg_typeof(type))))
+#define va_start __va_start
+#define va_arg __va_arg
+#define va_end __va_end
+#define va_list __va_list
+#define __va_end(list) ((void)0)
+
+#define __va_copy(a, b) (*(a) = *(b))
+
 #endif /* __VA_ARG_H */