[PATCH] frv: implement and export various things required by modules

Export a number of features required to build all the modules.  It also
implements the following simple features:

 (*) csum_partial_copy_from_user() for MMU as well as no-MMU.

 (*) __ucmpdi2().

so that they can be exported too.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/frv/lib/__ucmpdi2.S b/arch/frv/lib/__ucmpdi2.S
new file mode 100644
index 000000000000..d892f16ffaa9
--- /dev/null
+++ b/arch/frv/lib/__ucmpdi2.S
@@ -0,0 +1,45 @@
+/* __ucmpdi2.S: 64-bit unsigned compare
+ *
+ * Copyright (C) 2006 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 [GR8:GR9],
+#               unsigned long long b [GR10:GR11])
+#
+# - returns 0, 1, or 2 as a <, =, > b respectively.
+#
+###############################################################################
+        .globl          __ucmpdi2
+        .type           __ucmpdi2,@function
+__ucmpdi2:
+        or.p            gr8,gr0,gr4
+        subcc           gr8,gr10,gr0,icc0
+        setlos.p        #0,gr8
+        bclr            icc0,#2                 ; a.msw < b.msw
+
+        setlos.p        #2,gr8
+        bhilr           icc0,#0                 ; a.msw > b.msw
+
+        subcc.p         gr9,gr11,gr0,icc1
+        setlos          #0,gr8
+        setlos.p        #2,gr9
+        setlos          #1,gr7
+        cknc            icc1,cc6
+        cor.p           gr9,gr0,gr8,            cc6,#1
+        cckls           icc1,cc4,               cc6,#1
+        andcr           cc6,cc4,cc4
+        cor             gr7,gr0,gr8,            cc4,#1
+        bralr
+        .size           __ucmpdi2, .-__ucmpdi2