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-rw-r--r--soft-fp/soft-fp.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/soft-fp/soft-fp.h b/soft-fp/soft-fp.h
index bb68df9160..b247125a39 100644
--- a/soft-fp/soft-fp.h
+++ b/soft-fp/soft-fp.h
@@ -51,6 +51,15 @@
# endif
#endif
+/* For unreachable default cases in switch statements over bitwise OR
+ of FP_CLS_* values. */
+#if (defined __GNUC__ \
+ && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)))
+# define _FP_UNREACHABLE __builtin_unreachable ()
+#else
+# define _FP_UNREACHABLE abort ()
+#endif
+
/* In the Linux kernel, some architectures have a single function that
uses different kinds of unpacking and packing depending on the
instruction being emulated, meaning it is not readily visible to