diff --git a/cpu-all.h b/cpu-all.h
index dc0f2f02ab..0bae6df8ec 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -138,6 +138,16 @@ typedef union {
     uint64_t ll;
 } CPU_DoubleU;
 
+#if defined(FLOATX80)
+typedef union {
+     floatx80 d;
+     struct {
+         uint64_t lower;
+         uint16_t upper;
+     } l;
+} CPU_LDoubleU;
+#endif
+
 #if defined(CONFIG_SOFTFLOAT)
 typedef union {
     float128 q;