--- nono/m88xx0/m88100excep.h	2026/04/29 17:04:31	1.1
+++ nono/m88xx0/m88100excep.h	2026/04/29 17:04:44	1.1.1.3
@@ -1,6 +1,7 @@
 //
 // nono
-// Copyright (C) 2020 isaki@NetBSD.org
+// Copyright (C) 2020 nono project
+// Licensed under nono-license.txt
 //
 
 #pragma once
@@ -25,3 +26,14 @@
 #define M88K_EXCEP_SFU5_PRECISE		(122)
 #define M88K_EXCEP_SFU6_PRECISE		(124)
 #define M88K_EXCEP_SFU7_PRECISE		(126)
+
+// FP 例外
+// 7 .. 3 が precise、2 .. 0 が imprecise
+#define M88K_FPEXCEP_FIOV		(1 << 7)
+#define M88K_FPEXCEP_FUNIMP		(1 << 6)
+#define M88K_FPEXCEP_FPRV		(1 << 5)
+#define M88K_FPEXCEP_FROP		(1 << 4)
+#define M88K_FPEXCEP_FDVZ		(1 << 3)
+#define M88K_FPEXCEP_FUNF		(1 << 2)
+#define M88K_FPEXCEP_FOVF		(1 << 1)
+#define M88K_FPEXCEP_FINX		(1 << 0)