--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/gofast.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,80 @@
+/* US Software GOFAST floating point library support.
+   Copyright (C) 1994, 1998, 1999, 2002, 2003, 2004, 2007
+   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 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.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* The US Software GOFAST library requires special optabs support.
+   This file is intended to be included by config/ARCH/ARCH.c.  It
+   defines one function, gofast_maybe_init_libfuncs, which should be
+   called from the TARGET_INIT_LIBFUNCS hook.  When tm.h has defined
+   US_SOFTWARE_GOFAST, this function will adjust all the optabs and
+   libfuncs appropriately.  Otherwise it will do nothing.  */
+
+static void
+gofast_maybe_init_libfuncs (void)
+{
+#ifdef US_SOFTWARE_GOFAST
+  int mode;
+
+  set_optab_libfunc (add_optab, SFmode, "fpadd");
+  set_optab_libfunc (add_optab, DFmode, "dpadd");
+  set_optab_libfunc (sub_optab, SFmode, "fpsub");
+  set_optab_libfunc (sub_optab, DFmode, "dpsub");
+  set_optab_libfunc (smul_optab, SFmode, "fpmul");
+  set_optab_libfunc (smul_optab, DFmode, "dpmul");
+  set_optab_libfunc (sdiv_optab, SFmode, "fpdiv");
+  set_optab_libfunc (sdiv_optab, DFmode, "dpdiv");
+  set_optab_libfunc (cmp_optab, SFmode, "fpcmp");
+  set_optab_libfunc (cmp_optab, DFmode, "dpcmp");
+
+  /* GOFAST does not provide libfuncs for negation, so we use the
+     standard names.  */
+
+  /* GCC does not use fpcmp/dpcmp for gt or ge because its own
+     FP-emulation library returns +1 for both > and unord.  So we
+     leave gt and ge unset, such that, instead of fpcmp(a,b) >[=], we
+     generate fpcmp(b,a) <[=] 0, which is unambiguous.  For unord
+     libfuncs, we use our own functions, since GOFAST doesn't supply
+     them.  */
+
+  set_optab_libfunc (eq_optab, SFmode, "fpcmp");
+  set_optab_libfunc (ne_optab, SFmode, "fpcmp");
+  set_optab_libfunc (gt_optab, SFmode, 0);
+  set_optab_libfunc (ge_optab, SFmode, 0);
+  set_optab_libfunc (lt_optab, SFmode, "fpcmp");
+  set_optab_libfunc (le_optab, SFmode, "fpcmp");
+
+  set_optab_libfunc (eq_optab, DFmode, "dpcmp");
+  set_optab_libfunc (ne_optab, DFmode, "dpcmp");
+  set_optab_libfunc (gt_optab, DFmode, 0);
+  set_optab_libfunc (ge_optab, DFmode, 0);
+  set_optab_libfunc (lt_optab, DFmode, "dpcmp");
+  set_optab_libfunc (le_optab, DFmode, "dpcmp");
+
+  set_conv_libfunc (sext_optab,   DFmode, SFmode, "fptodp");
+  set_conv_libfunc (trunc_optab,  SFmode, DFmode, "dptofp");
+
+  set_conv_libfunc (sfix_optab,   SImode, SFmode, "fptosi");
+  set_conv_libfunc (sfix_optab,   SImode, DFmode, "dptoli");
+  set_conv_libfunc (ufix_optab,   SImode, SFmode, "fptoui");
+  set_conv_libfunc (ufix_optab,   SImode, DFmode, "dptoul");
+
+  set_conv_libfunc (sfloat_optab, SFmode, SImode, "sitofp");
+  set_conv_libfunc (sfloat_optab, DFmode, SImode, "litodp");
+#endif
+}