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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-10-06 16:01:27 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-10-06 16:01:27 +0100
commit907bc6c7fc7071b00083fc11e510e47dd93df45d (patch)
tree0697a608561522c00da9e1814974a2eb051bb96d /arch/s390/lib/ucmpdi2.c
parentd2b247a8be57647d1745535acd58169fbcbe431a (diff)
parent2a0f5cb32772e9a9560209e241a80bfbbc31dbc3 (diff)
Merge branch 'for-2.6.32' into for-2.6.33
Diffstat (limited to 'arch/s390/lib/ucmpdi2.c')
-rw-r--r--arch/s390/lib/ucmpdi2.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/s390/lib/ucmpdi2.c b/arch/s390/lib/ucmpdi2.c
new file mode 100644
index 00000000000..3e05ff53258
--- /dev/null
+++ b/arch/s390/lib/ucmpdi2.c
@@ -0,0 +1,26 @@
+#include <linux/module.h>
+
+union ull_union {
+ unsigned long long ull;
+ struct {
+ unsigned int high;
+ unsigned int low;
+ } ui;
+};
+
+int __ucmpdi2(unsigned long long a, unsigned long long b)
+{
+ union ull_union au = {.ull = a};
+ union ull_union bu = {.ull = b};
+
+ if (au.ui.high < bu.ui.high)
+ return 0;
+ else if (au.ui.high > bu.ui.high)
+ return 2;
+ if (au.ui.low < bu.ui.low)
+ return 0;
+ else if (au.ui.low > bu.ui.low)
+ return 2;
+ return 1;
+}
+EXPORT_SYMBOL(__ucmpdi2);