Provide a fake varargs implementation for lint's benefit. This way

it can see the intent of the va_* macros, even though it cannot work.

Approved by:	re (blanket amd64/*)

1 files changed, 13 insertions, 0 deletions

diff --git a/sys/amd64/include/stdarg.h b/sys/amd64/include/stdarg.h
index 53985af..c13137d 100644
--- a/sys/amd64/include/stdarg.h
+++ b/sys/amd64/include/stdarg.h
@@ -39,6 +39,7 @@
 typedef	__va_list	va_list;
 #endif
 
+#if defined(__GNUC__)
 #define	va_start(ap, last) \
 	__builtin_stdarg_start((ap), (last))
 
@@ -53,4 +54,16 @@ typedef	__va_list	va_list;
 #define	va_end(ap) \
 	__builtin_va_end(ap)
 
+#elif defined(lint)
+/* Provide a fake implementation for lint's benefit */
+#define	__va_size(type) \
+	(((sizeof(type) + sizeof(long) - 1) / sizeof(long)) * sizeof(long))
+#define	va_start(ap, last) \
+	((ap) = (va_list)&(last) + __va_size(last))
+#define	va_arg(ap, type) \
+	(*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
+#define	va_end(ap)
+
+#endif
+
 #endif /* !_MACHINE_STDARG_H_ */