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authorTony Lindgren <tony@atomide.com>2017-11-28 08:12:32 -0800
committerTony Lindgren <tony@atomide.com>2017-11-28 08:12:32 -0800
commitbc686442f8a601bccac1f22506ecdb4b0d62cadd (patch)
treeb224ab4aa2350b233da640f5850f48bc6bfeb2d0 /lib/cmpdi2.c
parent60636a5d0fa2f8bc6d0c23c4027100ba20866f9b (diff)
parentca41e244517d6d3f1600c229ff7ca615049c1e9c (diff)
Merge branch 'dts-fixes' into omap-for-v4.15/fixes-dt
Diffstat (limited to 'lib/cmpdi2.c')
-rw-r--r--lib/cmpdi2.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/cmpdi2.c b/lib/cmpdi2.c
new file mode 100644
index 000000000000..6d7ebf6c2b86
--- /dev/null
+++ b/lib/cmpdi2.c
@@ -0,0 +1,42 @@
+/*
+ * This program 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.
+ */
+
+#include <linux/export.h>
+
+#include <lib/libgcc.h>
+
+word_type notrace __cmpdi2(long long a, long long b)
+{
+ const DWunion au = {
+ .ll = a
+ };
+ const DWunion bu = {
+ .ll = b
+ };
+
+ if (au.s.high < bu.s.high)
+ return 0;
+ else if (au.s.high > bu.s.high)
+ return 2;
+
+ if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+ return 0;
+ else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+ return 2;
+
+ return 1;
+}
+EXPORT_SYMBOL(__cmpdi2);