2 files changed, 11 insertions, 1 deletions

diff --git a/include/math-emu/op-common.h b/include/math-emu/op-common.h
index 93780abd01bc..bb46e7645d53 100644
--- a/include/math-emu/op-common.h
+++ b/include/math-emu/op-common.h
@@ -145,13 +145,16 @@ do {								\
               {                                                 \
                 X##_e = 1;                                      \
                 _FP_FRAC_SET_##wc(X, _FP_ZEROFRAC_##wc);        \
+                FP_SET_EXCEPTION(FP_EX_INEXACT);                \
               }                                                 \
             else                                                \
               {                                                 \
                 X##_e = 0;                                      \
                 _FP_FRAC_SRL_##wc(X, _FP_WORKBITS);             \
-                FP_SET_EXCEPTION(FP_EX_UNDERFLOW);              \
               }                                                 \
+            if ((FP_CUR_EXCEPTIONS & FP_EX_INEXACT) ||          \
+                (FP_TRAPPING_EXCEPTIONS & FP_EX_UNDERFLOW))     \
+                FP_SET_EXCEPTION(FP_EX_UNDERFLOW);              \
           }                                                     \
         else                                                    \
           {                                                     \
diff --git a/include/math-emu/soft-fp.h b/include/math-emu/soft-fp.h
index d02eb64a865b..a0721ef5c2f9 100644
--- a/include/math-emu/soft-fp.h
+++ b/include/math-emu/soft-fp.h
@@ -97,12 +97,19 @@
 #define FP_INHIBIT_RESULTS 0
 #endif
 
+#ifndef FP_TRAPPING_EXCEPTIONS
+#define FP_TRAPPING_EXCPETIONS 0
+#endif
+
 #define FP_SET_EXCEPTION(ex)                            \
   _fex |= (ex)
   
 #define FP_UNSET_EXCEPTION(ex)                          \
   _fex &= ~(ex)
 
+#define FP_CUR_EXCEPTIONS                               \
+  (_fex)
+
 #define FP_CLEAR_EXCEPTIONS                             \
   _fex = 0