mn10300: provide __ucmpdi2() for MN10300
Provide __ucmpdi2() for MN10300 so that allmodconfig can be built.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/mn10300/lib/__ucmpdi2.S b/arch/mn10300/lib/__ucmpdi2.S
new file mode 100644
index 0000000..60dcbdf
--- /dev/null
+++ b/arch/mn10300/lib/__ucmpdi2.S
@@ -0,0 +1,43 @@
+/* __ucmpdi2.S: 64-bit unsigned compare
+ *
+ * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+
+ .text
+ .p2align 4
+
+###############################################################################
+#
+# int __ucmpdi2(unsigned long long a [D0:D1],
+# unsigned long long b [(SP,12),(SP,16)])
+#
+# - returns 0, 1, or 2 as a <, =, > b respectively.
+#
+###############################################################################
+ .globl __ucmpdi2
+ .type __ucmpdi2,@function
+__ucmpdi2:
+ mov (12,sp),a0 # b.lsw
+ mov (16,sp),a1 # b.msw
+
+ sub a0,d0
+ subc a1,d1 # may clear Z, never sets it
+ bne __ucmpdi2_differ # a.msw != b.msw
+ mov +1,d0
+ rets
+
+__ucmpdi2_differ:
+ # C flag is set if LE, clear if GE
+ subc d0,d0 # -1 if LE, 0 if GE
+ add +1,d0 # 0 if LE, 1 if GE
+ add d0,d0 # 0 if LE, 2 if GE
+ rets
+
+ .size __ucmpdi2, .-__ucmpdi2