summaryrefslogtreecommitdiffstats
path: root/contrib/gcc/config/rs6000/ppc64-fp.c
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/gcc/config/rs6000/ppc64-fp.c')
-rw-r--r--contrib/gcc/config/rs6000/ppc64-fp.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/contrib/gcc/config/rs6000/ppc64-fp.c b/contrib/gcc/config/rs6000/ppc64-fp.c
new file mode 100644
index 0000000..3f6d7cd
--- /dev/null
+++ b/contrib/gcc/config/rs6000/ppc64-fp.c
@@ -0,0 +1,146 @@
+/* Functions needed for soft-float on powerpc64-linux, copied from
+ libgcc2.c with macros expanded to force the use of specific types.
+
+ Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+
+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 2, or (at your option) any later
+version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file. (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+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.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+#if defined(__powerpc64__)
+#include "fp-bit.h"
+
+extern DItype __fixdfdi (DFtype);
+extern DItype __fixsfdi (SFtype);
+extern USItype __fixunsdfsi (DFtype);
+extern USItype __fixunssfsi (SFtype);
+extern DFtype __floatdidf (DItype);
+extern SFtype __floatdisf (DItype);
+
+static DItype local_fixunssfdi (SFtype);
+static DItype local_fixunsdfdi (DFtype);
+
+DItype
+__fixdfdi (DFtype a)
+{
+ if (a < 0)
+ return - local_fixunsdfdi (-a);
+ return local_fixunsdfdi (a);
+}
+
+DItype
+__fixsfdi (SFtype a)
+{
+ if (a < 0)
+ return - local_fixunssfdi (-a);
+ return local_fixunssfdi (a);
+}
+
+USItype
+__fixunsdfsi (DFtype a)
+{
+ if (a >= - (DFtype) (- ((SItype)(((USItype)1 << ((4 * 8) - 1)) - 1)) - 1))
+ return (SItype) (a + (- ((SItype)(((USItype)1 << ((4 * 8) - 1)) - 1)) - 1))
+ - (- ((SItype)(((USItype)1 << ((4 * 8) - 1)) - 1)) - 1);
+ return (SItype) a;
+}
+
+USItype
+__fixunssfsi (SFtype a)
+{
+ if (a >= - (SFtype) (- ((SItype)(((USItype)1 << ((4 * 8) - 1)) - 1)) - 1))
+ return (SItype) (a + (- ((SItype)(((USItype)1 << ((4 * 8) - 1)) - 1)) - 1))
+ - (- ((SItype)(((USItype)1 << ((4 * 8) - 1)) - 1)) - 1);
+ return (SItype) a;
+}
+
+DFtype
+__floatdidf (DItype u)
+{
+ DFtype d;
+
+ d = (SItype) (u >> (sizeof (SItype) * 8));
+ d *= (((UDItype) 1) << ((sizeof (SItype) * 8) / 2));
+ d *= (((UDItype) 1) << ((sizeof (SItype) * 8) / 2));
+ d += (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
+
+ return d;
+}
+
+SFtype
+__floatdisf (DItype u)
+{
+ DFtype f;
+
+ if (53 < (sizeof (DItype) * 8)
+ && 53 > ((sizeof (DItype) * 8) - 53 + 24))
+ {
+ if (! (- ((DItype) 1 << 53) < u
+ && u < ((DItype) 1 << 53)))
+ {
+ if ((UDItype) u & (((UDItype) 1 << ((sizeof (DItype) * 8) - 53)) - 1))
+ {
+ u &= ~ (((UDItype) 1 << ((sizeof (DItype) * 8) - 53)) - 1);
+ u |= ((UDItype) 1 << ((sizeof (DItype) * 8) - 53));
+ }
+ }
+ }
+ f = (SItype) (u >> (sizeof (SItype) * 8));
+ f *= (((UDItype) 1) << ((sizeof (SItype) * 8) / 2));
+ f *= (((UDItype) 1) << ((sizeof (SItype) * 8) / 2));
+ f += (USItype) (u & ((((UDItype) 1) << (sizeof (SItype) * 8)) - 1));
+
+ return (SFtype) f;
+}
+
+/* This version is needed to prevent recursion; fixunsdfdi in libgcc
+ calls fixdfdi, which in turn calls calls fixunsdfdi. */
+
+static DItype
+local_fixunsdfdi (DFtype a)
+{
+ USItype hi, lo;
+
+ hi = a / (((UDItype) 1) << (sizeof (SItype) * 8));
+ lo = (a - ((DFtype) hi) * (((UDItype) 1) << (sizeof (SItype) * 8)));
+ return ((UDItype) hi << (sizeof (SItype) * 8)) | lo;
+}
+
+/* This version is needed to prevent recursion; fixunssfdi in libgcc
+ calls fixsfdi, which in turn calls calls fixunssfdi. */
+
+static DItype
+local_fixunssfdi (SFtype original_a)
+{
+ DFtype a = original_a;
+ USItype hi, lo;
+
+ hi = a / (((UDItype) 1) << (sizeof (SItype) * 8));
+ lo = (a - ((DFtype) hi) * (((UDItype) 1) << (sizeof (SItype) * 8)));
+ return ((UDItype) hi << (sizeof (SItype) * 8)) | lo;
+}
+
+#endif /* __powerpc64__ */
OpenPOWER on IntegriCloud