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authorRusty Russell <rusty@rustcorp.com.au>2008-12-30 08:02:35 +1030
committerRusty Russell <rusty@rustcorp.com.au>2008-12-30 08:02:35 +1030
commit33edcf133ba93ecba2e4b6472e97b689895d805c (patch)
tree327d7a20acef64005e7c5ccbfa1265be28aeb6ac /arch/sh/lib/ashrdi3.c
parentbe4d638c1597580ed2294d899d9f1a2cd10e462c (diff)
parent3c92ec8ae91ecf59d88c798301833d7cf83f2179 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/sh/lib/ashrdi3.c')
-rw-r--r--arch/sh/lib/ashrdi3.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/sh/lib/ashrdi3.c b/arch/sh/lib/ashrdi3.c
new file mode 100644
index 00000000000..c884a912b66
--- /dev/null
+++ b/arch/sh/lib/ashrdi3.c
@@ -0,0 +1,31 @@
+#include <linux/module.h>
+
+#include "libgcc.h"
+
+long long __ashrdi3(long long u, word_type b)
+{
+ DWunion uu, w;
+ word_type bm;
+
+ if (b == 0)
+ return u;
+
+ uu.ll = u;
+ bm = 32 - b;
+
+ if (bm <= 0) {
+ /* w.s.high = 1..1 or 0..0 */
+ w.s.high =
+ uu.s.high >> 31;
+ w.s.low = uu.s.high >> -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.high << bm;
+
+ w.s.high = uu.s.high >> b;
+ w.s.low = ((unsigned int) uu.s.low >> b) | carries;
+ }
+
+ return w.ll;
+}
+
+EXPORT_SYMBOL(__ashrdi3);