1 files changed, 107 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/s390/32/_fixsfdi.c b/gcc-4.9/libgcc/config/s390/32/_fixsfdi.c
new file mode 100644
index 000000000..99f91a705
--- /dev/null
+++ b/gcc-4.9/libgcc/config/s390/32/_fixsfdi.c
@@ -0,0 +1,107 @@
+/* Definitions of target machine for GNU compiler, for IBM S/390
+   Copyright (C) 1999-2014 Free Software Foundation, Inc.
+   Contributed by Hartmut Penner (hpenner@de.ibm.com) and
+                  Ulrich Weigand (uweigand@de.ibm.com).
+
+This file is part of GCC.
+
+GCC 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, or (at your option) any later
+version.
+
+GCC 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/>.  */
+
+#ifndef __s390x__
+
+#define EXPONENT_BIAS   127
+#define MANTISSA_BITS   23
+#define EXP(fp)         (((fp.l) >> MANTISSA_BITS) & 0xFF)
+#define PRECISION       (MANTISSA_BITS + 1)
+#define SIGNBIT         0x80000000
+#define SIGN(fp)        ((fp.l) & SIGNBIT)
+#define HIDDEN          (1 << MANTISSA_BITS)
+#define MANT(fp)        (((fp.l) & 0x7FFFFF) | HIDDEN)
+#define FRAC(fp)        ((fp.l) & 0x7FFFFF)
+#define LLONG_MAX       9223372036854775807LL
+#define LLONG_MIN       (-LLONG_MAX - 1LL)
+
+typedef int DItype_x __attribute__ ((mode (DI)));
+typedef unsigned int UDItype_x __attribute__ ((mode (DI)));
+typedef int SItype_x __attribute__ ((mode (SI)));
+typedef unsigned int USItype_x __attribute__ ((mode (SI)));
+
+union float_long
+  {
+    float f;
+    USItype_x l;
+  };
+
+static __inline__ void
+fexceptdiv (float d, float e)
+{
+  __asm__ __volatile__ ("debr %0,%1" : : "f" (d), "f" (e) );
+}
+
+DItype_x __fixsfdi (float a1);
+
+/* convert double to int */
+DItype_x
+__fixsfdi (float a1)
+{
+    register union float_long fl1;
+    register int exp;
+    register DItype_x l;
+
+    fl1.f = a1;
+
+    /* +/- 0, denormalized */
+    if (!EXP (fl1))
+      return 0;
+
+    exp = EXP (fl1) - EXPONENT_BIAS - MANTISSA_BITS;
+
+    /* number < 1 */
+    if (exp <= -PRECISION)
+      return 0;
+
+    /* NaN */
+
+    if ((EXP (fl1) == 0xff) && (FRAC (fl1) != 0)) /* NaN */
+      {
+	/* C99 Annex F.4 requires an "invalid" exception to be thrown.  */
+	fexceptdiv (0.0, 0.0);
+	return 0x8000000000000000ULL;
+      }
+
+    /* Number big number & +/- inf */
+    if (exp >= 40) {      
+      /* Don't throw an exception for -1p+63  */
+      if (!SIGN (fl1) || exp > 40 || FRAC (fl1) != 0)
+	/* C99 Annex F.4 requires an "invalid" exception to be thrown.  */
+	fexceptdiv (0.0, 0.0);
+      return SIGN (fl1) ? LLONG_MIN : LLONG_MAX;
+    }
+
+    l = MANT (fl1);
+
+    if (exp > 0)
+      l <<= exp;
+    else
+      l >>= -exp;
+
+    return (SIGN (fl1) ? -l : l);
+}
+#endif /* !__s390x__ */