1 files changed, 53 insertions, 0 deletions
diff --git a/libgcc/soft-fp/fixddti.c b/libgcc/soft-fp/fixddti.c
new file mode 100644
index 0000000..c27ae8b
--- /dev/null
+++ b/libgcc/soft-fp/fixddti.c
@@ -0,0 +1,53 @@
+/* Software floating-point emulation.
+   Convert _Decimal64 to 128bit signed integer.
+
+   Copyright (C) 2023 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.
+
+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/>.  */
+
+#include "soft-fp.h"
+#include "bitint.h"
+
+#if defined(__BITINT_MAXWIDTH__) && defined(__SIZEOF_INT128__)
+extern void __bid_fixddbitint (UBILtype *, SItype, _Decimal64);
+extern TItype __bid_fixddti (_Decimal64);
+
+TItype
+__bid_fixddti (_Decimal64 a)
+{
+  UBILtype rb[128 / BIL_TYPE_SIZE];
+  __bid_fixddbitint (rb, -128, a);
+#if BIL_TYPE_SIZE == 128
+  return rb[0];
+#elif BIL_TYPE_SIZE == 64
+  return ((((UTItype) rb[BITINT_END (0, 1)]) << 64)
+	  | rb[BITINT_END (1, 0)]);
+#elif BIL_TYPE_SIZE == 32
+  return ((((UTItype) rb[BITINT_END (0, 3)]) << 96)
+	  | (((UTItype) rb[BITINT_END (1, 2)]) << 64)
+	  | (((UTItype) rb[BITINT_END (2, 1)]) << 32)
+	  | rb[BITINT_END (3, 0)]);
+#else
+#error Unsupported UBILtype
+#endif
+}
+#endif