fix #681
diff --git a/cs.c b/cs.c
index 3be8ceb..4549e28 100644
--- a/cs.c
+++ b/cs.c
@@ -21,6 +21,21 @@
#include "windows\winkernel_mm.h"
#endif
+// Issue #681: Windows kernel does not support formatting float point
+#if defined(_KERNEL_MODE) && !defined(CAPSTONE_DIET)
+#if defined(CAPSTONE_HAS_ARM) || defined(CAPSTONE_HAS_ARM64)
+#define CAPSTONE_STR_INTERNAL(x) #x
+#define CAPSTONE_STR(x) CAPSTONE_STR_INTERNAL(x)
+#define CAPSTONE_MSVC_WRANING_PREFIX __FILE__ "("CAPSTONE_STR(__LINE__)") : warning message : "
+
+#pragma message(CAPSTONE_MSVC_WRANING_PREFIX "Windows driver does not support full features for selected architecture(s). Define CAPSTONE_DIET to compile Capstone with only supported features. See issue #681 for details.")
+
+#undef CAPSTONE_MSVC_WRANING_PREFIX
+#undef CAPSTONE_STR
+#undef CAPSTONE_STR_INTERNAL
+#endif
+#endif // defined(_KERNEL_MODE) && !defined(CAPSTONE_DIET)
+
#if !defined(CAPSTONE_HAS_OSXKERNEL) && !defined(CAPSTONE_DIET) && !defined(_KERNEL_MODE)
#define INSN_CACHE_SIZE 32
#else
