ppc64-fp.c: New file.

2003-02-10  Janis Johnson  <janis187@us.ibm.com>

	* config/rs6000/ppc64-fp.c: New file.
	* config/rs6000/t-linux64 (LIB2FUNCS_EXTRA): Add ppc64-fp.c.

From-SVN: r62652

gcc/ChangeLog

+2003-02-10  Janis Johnson  <janis187@us.ibm.com>
+
+	* config/rs6000/ppc64-fp.c: New file.
+	* config/rs6000/t-linux64 (LIB2FUNCS_EXTRA): Add ppc64-fp.c.
+
 2003-02-10  Josef Zlomek  <zlomekj@suse.cz>
 
 	* Makefile.in (bb-reorder.o): Add dependency on $(FIBHEAP_H).

gcc/config/rs6000/ppc64-fp.c

+/* 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__ */

gcc/config/rs6000/t-linux64

@@ -5,6 +5,9 @@ TARGET_LIBGCC2_CFLAGS =
 EXTRA_MULTILIB_PARTS=crtbegin.o crtend.o crtbeginS.o crtendS.o crtbeginT.o \
 			crtsavres.o
 
+# These functions are needed for soft-float on powerpc64-linux.
+LIB2FUNCS_EXTRA = $(srcdir)/config/rs6000/ppc64-fp.c
+
 # ld provides these functions as needed.
 crtsavres.S:
 	echo >crtsavres.S