From eecb20720f1b29019725515051e41bc7c079f91f Mon Sep 17 00:00:00 2001
From: Michal Simek <monstr@monstr.eu>
Date: Tue, 29 Nov 2011 13:05:30 +0100
Subject: microblaze: Add __cmpdi2
Some new kernel configurations require __cmpdi2 function.
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
arch/microblaze/lib/cmpdi2.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 arch/microblaze/lib/cmpdi2.c
(limited to 'arch/microblaze/lib/cmpdi2.c')
diff --git a/arch/microblaze/lib/cmpdi2.c b/arch/microblaze/lib/cmpdi2.c
new file mode 100644
index 0000000..a708400
--- /dev/null
+++ b/arch/microblaze/lib/cmpdi2.c
@@ -0,0 +1,26 @@
+#include <linux/module.h>
+
+#include "libgcc.h"
+
+word_type __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);
--
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