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-rw-r--r--lib/builtins/ucmpdi2.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/builtins/ucmpdi2.c b/lib/builtins/ucmpdi2.c
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+++ b/lib/builtins/ucmpdi2.c
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+/* ===-- ucmpdi2.c - Implement __ucmpdi2 -----------------------------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __ucmpdi2 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+/* Returns: if (a < b) returns 0
+ * if (a == b) returns 1
+ * if (a > b) returns 2
+ */
+
+COMPILER_RT_ABI si_int
+__ucmpdi2(du_int a, du_int b)
+{
+ udwords x;
+ x.all = a;
+ udwords y;
+ y.all = b;
+ if (x.s.high < y.s.high)
+ return 0;
+ if (x.s.high > y.s.high)
+ return 2;
+ if (x.s.low < y.s.low)
+ return 0;
+ if (x.s.low > y.s.low)
+ return 2;
+ return 1;
+}
+
+#ifdef __ARM_EABI__
+/* Returns: if (a < b) returns -1
+* if (a == b) returns 0
+* if (a > b) returns 1
+*/
+COMPILER_RT_ABI si_int
+__aeabi_ulcmp(di_int a, di_int b)
+{
+ return __ucmpdi2(a, b) - 1;
+}
+#endif
+