path: root/arch/mn10300/lib/negdi2.c
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Diffstat (limited to 'arch/mn10300/lib/negdi2.c')
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/mn10300/lib/negdi2.c b/arch/mn10300/lib/negdi2.c
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index 000000000000..eae4ecdd5f69
--- /dev/null
+++ b/arch/mn10300/lib/negdi2.c
@@ -0,0 +1,57 @@
+/* More subroutines needed by GCC output code on some machines. */
+/* Compile this one with gcc. */
+/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001 Free Software Foundation, Inc.
+This file is part of GNU CC.
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public Licence 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 Licence, 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 Licence restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+GNU General Public Licence for more details.
+You should have received a copy of the GNU General Public Licence
+along with GNU CC; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+/* It is incorrect to include config.h here, because this file is being
+ compiled for the target, and hence definitions concerning only the host
+ do not apply. */
+#include <linux/types.h>
+union DWunion {
+ s64 ll;
+ struct {
+ s32 low;
+ s32 high;
+ } s;
+s64 __negdi2(s64 u)
+ union DWunion w;
+ union DWunion uu;
+ uu.ll = u;
+ w.s.low = -uu.s.low;
+ w.s.high = -uu.s.high - ((u32) w.s.low > 0);
+ return w.ll;