[PATCH] soft-fp: Add floattixf.c and floatuntixf.c

["H.J. Lu" <hjl dot tools at gmail dot com>]

TI->XF conversions in libgcc2.c:

XFtype
__floatdixf (DWtype u)
{
  XFtype d = (Wtype) (u >> W_TYPE_SIZE);
  d *= Wtype_MAXp1_F;
  d += (UWtype)u;
  return d;
}

have no rounding mode support.  Add floattixf.c and floatuntixf.c to
soft-fp to support rounding mode.

	* soft-fp/floattixf.c: New file.
	* soft-fp/floatuntixf.c: Likewise.
---
 soft-fp/floattixf.c   | 45 +++++++++++++++++++++++++++++++++++++++++++
 soft-fp/floatuntixf.c | 45 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 90 insertions(+)
 create mode 100644 soft-fp/floattixf.c
 create mode 100644 soft-fp/floatuntixf.c

diff --git a/soft-fp/floattixf.c b/soft-fp/floattixf.c
new file mode 100644
index 0000000000..39ac95daeb
--- /dev/null
+++ b/soft-fp/floattixf.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+   Convert a 128bit signed integer to IEEE extended.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser 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 Lesser 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.)
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "soft-fp.h"
+#include "extended.h"
+
+XFtype
+__floattixf (TItype i)
+{
+  FP_DECL_EX;
+  FP_DECL_E (A);
+  XFtype a;
+
+  FP_INIT_ROUNDMODE;
+  FP_FROM_INT_E (A, i, TI_BITS, UTItype);
+  FP_PACK_RAW_E (a, A);
+  FP_HANDLE_EXCEPTIONS;
+
+  return a;
+}
diff --git a/soft-fp/floatuntixf.c b/soft-fp/floatuntixf.c
new file mode 100644
index 0000000000..783fea9997
--- /dev/null
+++ b/soft-fp/floatuntixf.c
@@ -0,0 +1,45 @@
+/* Software floating-point emulation.
+   Convert a 128bit unsigned integer to IEEE extended.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser 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 Lesser 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.)
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "soft-fp.h"
+#include "extended.h"
+
+XFtype
+__floatuntixf (UTItype i)
+{
+  FP_DECL_EX;
+  FP_DECL_E (A);
+  XFtype a;
+
+  FP_INIT_ROUNDMODE;
+  FP_FROM_INT_E (A, i, TI_BITS, UTItype);
+  FP_PACK_RAW_E (a, A);
+  FP_HANDLE_EXCEPTIONS;
+
+  return a;
+}
-- 
2.20.1