2013-06-17 Tobias Burnus <burnus@net-b.de>

        * gfortran.h (gfc_option_t): Add fpe_summary.
        * gfortran.texi (_gfortran_set_options): Update.
        * invoke.texi (-ffpe-summary): Add doc.
        * lang.opt (ffpe-summary): Add flag.
        * options.c (gfc_init_options, gfc_handle_option): Handle it.
        (gfc_handle_fpe_option): Renamed from gfc_handle_fpe_trap_option,
        also handle fpe_summary.
        * trans-decl.c (create_main_function): Update
        _gfortran_set_options call.

2013-06-17  Tobias Burnus  <burnus@net-b.de>

        * libgfortran.h (compile_options_t) Add fpe_summary.
        (get_fpu_except_flags): New prototype.
        * runtime/compile_options.c (set_options, init_compile_options):
        Handle fpe_summary.
        * runtime/stop.c (report_exception): New function.
        (stop_numeric, stop_numeric_f08, stop_string, error_stop_string,
        error_stop_numeric): Call it.
        * config/fpu-387.h (get_fpu_except_flags): New function.
        * config/fpu-aix.h (get_fpu_except_flags): New function.
        * config/fpu-generic.h (get_fpu_except_flags): New function.
        * config/fpu-glibc.h (get_fpu_except_flags): New function.
        * config/fpu-glibc.h (get_fpu_except_flags): New function.
        * configure.ac: Check for fpxcp.h.
        * configure: Regenerate.
        * config.h.in: Regenerate.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@200147 138bc75d-0d04-0410-961f-82ee72b054a4

5 files changed, 162 insertions, 0 deletions

diff --git a/libgfortran/config/fpu-387.h b/libgfortran/config/fpu-387.h
index 913eb60b1d9..608354d975a 100644
--- a/libgfortran/config/fpu-387.h
+++ b/libgfortran/config/fpu-387.h
@@ -134,3 +134,40 @@ void set_fpu (void)
       asm volatile ("%vldmxcsr %0" : : "m" (cw_sse));
     }
 }
+
+
+int
+get_fpu_except_flags (void)
+{
+  int result;
+  unsigned short cw;
+
+  __asm__ __volatile__ ("fnstsw\t%0" : "=a" (cw));
+
+  if (has_sse())
+    {
+      unsigned int cw_sse;
+      __asm__ __volatile__ ("%vstmxcsr\t%0" : "=m" (cw_sse));
+      cw |= cw_sse;
+    }
+
+  if (cw & _FPU_MASK_IM)
+    result |= GFC_FPE_INVALID;
+
+  if (cw & _FPU_MASK_ZM)
+    result |= GFC_FPE_ZERO;
+
+  if (cw & _FPU_MASK_OM)
+    result |= GFC_FPE_OVERFLOW;
+
+  if (cw & _FPU_MASK_UM)
+    result |= GFC_FPE_UNDERFLOW;
+
+  if (cw & _FPU_MASK_DM)
+    result |= GFC_FPE_DENORMAL;
+
+  if (cw & _FPU_MASK_PM)
+    result |= GFC_FPE_INEXACT;
+
+  return result;
+}
diff --git a/libgfortran/config/fpu-aix.h b/libgfortran/config/fpu-aix.h
index bcb5500c657..1ba9d4cfb22 100644
--- a/libgfortran/config/fpu-aix.h
+++ b/libgfortran/config/fpu-aix.h
@@ -29,6 +29,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include <fptrap.h>
 #endif
 
+#ifdef HAVE_FPXCP_H
+#include <fpxcp.h>
+#endif
+
 void
 set_fpu (void)
 {
@@ -81,3 +85,34 @@ set_fpu (void)
   fp_trap(FP_TRAP_SYNC);
   fp_enable(mode);
 }
+
+
+int
+get_fpu_except_flags (void)
+{
+  int result, set_excepts;
+
+  result = 0;
+
+#ifdef HAVE_FPXCP_H
+  if (!fp_any_xcp ())
+    return 0;
+
+  if (fp_invalid_op ())
+    result |= GFC_FPE_INVALID;
+
+  if (fp_divbyzero ())
+    result |= GFC_FPE_ZERO;
+
+  if (fp_overflow ())
+    result |= GFC_FPE_OVERFLOW;
+
+  if (fp_underflow ())
+    result |= GFC_FPE_UNDERFLOW;
+
+  if (fp_inexact ())
+    result |= GFC_FPE_INEXACT;
+#endif
+
+  return result;
+}
diff --git a/libgfortran/config/fpu-generic.h b/libgfortran/config/fpu-generic.h
index 23212f8fb3c..4223f2e27d4 100644
--- a/libgfortran/config/fpu-generic.h
+++ b/libgfortran/config/fpu-generic.h
@@ -50,3 +50,9 @@ set_fpu (void)
     estr_write ("Fortran runtime warning: IEEE 'inexact' "
 	        "exception not supported.\n");
 }
+
+int
+get_fpu_except_flags (void)
+{
+  return 0;
+}
diff --git a/libgfortran/config/fpu-glibc.h b/libgfortran/config/fpu-glibc.h
index 5c7ad84ff39..e0d1019b919 100644
--- a/libgfortran/config/fpu-glibc.h
+++ b/libgfortran/config/fpu-glibc.h
@@ -85,3 +85,45 @@ void set_fpu (void)
 	        "exception not supported.\n");
 #endif
 }
+
+
+int
+get_fpu_except_flags (void)
+{
+  int result, set_excepts;
+
+  result = 0;
+  set_excepts = fetestexcept (FE_ALL_EXCEPT);
+
+#ifdef FE_INVALID
+  if (set_excepts & FE_INVALID)
+    result |= GFC_FPE_INVALID;
+#endif
+
+#ifdef FE_DIVBYZERO
+  if (set_excepts & FE_DIVBYZERO)
+    result |= GFC_FPE_ZERO;
+#endif
+
+#ifdef FE_OVERFLOW
+  if (set_excepts & FE_OVERFLOW)
+    result |= GFC_FPE_OVERFLOW;
+#endif
+
+#ifdef FE_UNDERFLOW
+  if (set_excepts & FE_UNDERFLOW)
+    result |= GFC_FPE_UNDERFLOW;
+#endif
+
+#ifdef FE_DENORMAL
+  if (set_excepts & FE_DENORMAL)
+    result |= GFC_FPE_DENORMAL;
+#endif
+
+#ifdef FE_INEXACT
+  if (set_excepts & FE_INEXACT)
+    result |= GFC_FPE_INEXACT;
+#endif
+
+  return result;
+}
diff --git a/libgfortran/config/fpu-sysv.h b/libgfortran/config/fpu-sysv.h
index b32702b3ce9..8fc52d5eade 100644
--- a/libgfortran/config/fpu-sysv.h
+++ b/libgfortran/config/fpu-sysv.h
@@ -80,3 +80,45 @@ set_fpu (void)
 
   fpsetmask(cw);
 }
+
+int
+get_fpu_except_flags (void)
+{
+  int result;
+  fp_except_t set_excepts;
+
+  result = 0;
+  set_excepts = fpgetsticky ();
+
+#ifdef FP_X_INV
+  if (set_excepts & FP_X_INV)
+    result |= GFC_FPE_INVALID;
+#endif
+
+#ifdef FP_X_DZ
+  if (set_excepts & FP_X_DZ)
+    result |= GFC_FPE_ZERO;
+#endif
+
+#ifdef FP_X_OFL
+  if (set_excepts & FP_X_OFL)
+    result |= GFC_FPE_OVERFLOW;
+#endif
+
+#ifdef FP_X_UFL
+  if (set_excepts & FP_X_UFL)
+    result |= GFC_FPE_UNDERFLOW;
+#endif
+
+#ifdef FP_X_DNML
+  if (set_excepts & FP_X_DNML)
+    result |= GFC_FPE_DENORMAL;
+#endif
+
+#ifdef FP_X_IMP
+  if (set_excepts & FP_X_IMP)
+    result |= GFC_FPE_INEXACT;
+#endif
+
+  return result;
+}