diff --git a/include/asm-m32r/ucontext.h b/include/asm-m32r/ucontext.h
new file mode 100644
index 0000000..2de709a
--- /dev/null
+++ b/include/asm-m32r/ucontext.h
@@ -0,0 +1,14 @@
+#ifndef _ASM_M32R_UCONTEXT_H
+#define _ASM_M32R_UCONTEXT_H
+
+/* orig : i386 2.4.18 */
+
+struct ucontext {
+	unsigned long	  uc_flags;
+	struct ucontext  *uc_link;
+	stack_t		  uc_stack;
+	struct sigcontext uc_mcontext;
+	sigset_t	  uc_sigmask;	/* mask last for extensibility */
+};
+
+#endif /* _ASM_M32R_UCONTEXT_H */