[MIPS] Add __cmpdi2

[linux-drm-fsl-dcu.git] / arch / mips / lib / cmpdi2.c

diff --git a/arch/mips/lib/cmpdi2.c b/arch/mips/lib/cmpdi2.c
new file mode 100644 (file)
index 0000000..8c13064
--- /dev/null
+++ b/arch/mips/lib/cmpdi2.c
@@ -0,0 +1,27 @@
+#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);