1 files changed, 51 insertions, 0 deletions

diff --git a/arch/mn10300/lib/__ashldi3.S b/arch/mn10300/lib/__ashldi3.S
new file mode 100644
index 000000000000..a51a9506f00c
--- /dev/null
+++ b/arch/mn10300/lib/__ashldi3.S
@@ -0,0 +1,51 @@
+/* MN10300 64-bit arithmetic left shift
+ *
+ * Copyright (C) 2007 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 Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <asm/cache.h>
+
+        .text
+        .balign L1_CACHE_BYTES
+
+###############################################################################
+#
+# unsigned long long __ashldi3(unsigned long long value [D1:D0],
+#                              unsigned by [(12,SP)])
+#
+###############################################################################
+        .globl  __ashldi3
+        .type   __ashldi3,@function
+__ashldi3:
+        mov     (12,sp),a0
+        and     +63,a0
+        beq     __ashldi3_zero
+
+        cmp     +31,a0
+        bhi     __ashldi3_32plus
+
+        # the count is in the range 1-31
+        asl     a0,d1
+
+        mov     +32,a1
+        sub     a0,a1,a1                        # a1 = 32 - count
+        lsr     a1,d0,a1                        # get overflow from LSW -> MSW
+
+        or_asl  a1,d1,a0,d0                     # insert overflow into MSW and
+                                                # shift the LSW
+        rets
+
+        .balign L1_CACHE_BYTES
+        # the count is in the range 32-63
+__ashldi3_32plus:
+        asl     a0,d0,d1
+        clr     d0
+__ashldi3_zero:
+        rets
+
+        .size   __ashldi3, .-__ashldi3