Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 190 insertions, 0 deletions

diff --git a/gcc-4.9/libgfortran/config/fpu-aix.h b/gcc-4.9/libgfortran/config/fpu-aix.h
new file mode 100644
index 000000000..a05fab837
--- /dev/null
+++ b/gcc-4.9/libgfortran/config/fpu-aix.h
@@ -0,0 +1,190 @@
+/* AIX FPU-related code.
+   Copyright (C) 2005-2014 Free Software Foundation, Inc.
+   Contributed by Francois-Xavier Coudert <coudert@clipper.ens.fr>
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+
+/* FPU-related code for AIX.  */
+#ifdef HAVE_FPTRAP_H
+#include <fptrap.h>
+#endif
+
+#ifdef HAVE_FPXCP_H
+#include <fpxcp.h>
+#endif
+
+void
+set_fpu (void)
+{
+  fptrap_t mode = 0;
+
+  if (options.fpe & GFC_FPE_INVALID)
+#ifdef TRP_INVALID
+    mode |= TRP_INVALID;
+#else
+    estr_write ("Fortran runtime warning: IEEE 'invalid operation' "
+	        "exception not supported.\n");
+#endif
+
+  if (options.fpe & GFC_FPE_DENORMAL)
+    estr_write ("Fortran runtime warning: Floating point 'denormal operand' "
+	        "exception not supported.\n");
+
+  if (options.fpe & GFC_FPE_ZERO)
+#ifdef TRP_DIV_BY_ZERO
+    mode |= TRP_DIV_BY_ZERO;
+#else
+    estr_write ("Fortran runtime warning: IEEE 'division by zero' "
+	        "exception not supported.\n");
+#endif
+
+  if (options.fpe & GFC_FPE_OVERFLOW)
+#ifdef TRP_OVERFLOW
+    mode |= TRP_OVERFLOW;
+#else
+    estr_write ("Fortran runtime warning: IEEE 'overflow' "
+	        "exception not supported.\n");
+#endif
+
+  if (options.fpe & GFC_FPE_UNDERFLOW)
+#ifdef TRP_UNDERFLOW
+    mode |= TRP_UNDERFLOW;
+#else
+    estr_write ("Fortran runtime warning: IEEE 'underflow' "
+	        "exception not supported.\n");
+#endif
+
+  if (options.fpe & GFC_FPE_INEXACT)
+#ifdef TRP_INEXACT
+    mode |= TRP_INEXACT;
+#else
+    estr_write ("Fortran runtime warning: IEEE 'inexact' "
+	        "exception not supported.\n");
+#endif
+
+  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;
+}
+
+
+int
+get_fpu_rounding_mode (void)
+{
+  int rnd_mode;
+
+  rnd_mode = fegetround ();
+
+  switch (rnd_mode)
+    {
+#ifdef FE_TONEAREST
+      case FE_TONEAREST:
+	return GFC_FPE_TONEAREST;
+#endif
+
+#ifdef FE_UPWARD
+      case FE_UPWARD:
+	return GFC_FPE_UPWARD;
+#endif
+
+#ifdef FE_DOWNWARD
+      case FE_DOWNWARD:
+	return GFC_FPE_DOWNWARD;
+#endif
+
+#ifdef FE_TOWARDZERO
+      case FE_TOWARDZERO:
+	return GFC_FPE_TOWARDZERO;
+#endif
+      default:
+	return GFC_FPE_INVALID;
+    }
+}
+
+
+void
+set_fpu_rounding_mode (int mode)
+{
+  int rnd_mode;
+
+  switch (mode)
+    {
+#ifdef FE_TONEAREST
+      case GFC_FPE_TONEAREST:
+	rnd_mode = FE_TONEAREST;
+	break;
+#endif
+
+#ifdef FE_UPWARD
+      case GFC_FPE_UPWARD:
+	rnd_mode = FE_UPWARD;
+	break;
+#endif
+
+#ifdef FE_DOWNWARD
+      case GFC_FPE_DOWNWARD:
+	rnd_mode = FE_DOWNWARD;
+	break;
+#endif
+
+#ifdef FE_TOWARDZERO
+      case GFC_FPE_TOWARDZERO:
+	rnd_mode = FE_TOWARDZERO;
+	break;
+#endif
+      default:
+	return;
+    }
+
+  fesetround (rnd_mode);
+}