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authorChen Liqin <liqin.chen@sunplusct.com>2009-08-30 10:26:23 +0800
committerChen Liqin <liqin.chen@sunplusct.com>2009-08-30 10:26:23 +0800
commitd27eadc7612404b06f99888c02726ab7d5036e0f (patch)
treeed32b38e1cd4cbc52506c27c8cc353161255c9d6 /arch/score/lib/ashldi3.c
parentadda766193ea1cf3137484a9521972d080d0b7af (diff)
parentfbd85b0e26bab0a13dcf860f2c20e86cb0507b61 (diff)
Merge branch 'score' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic into for-linus
* 'score' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: score: clean up mm/init.c score: make irq.h definitions local score: cleanups: dead code, 0 as pointer, shadowed variables score: fix function prototypes score: add address space annotations score: add missing #includes score: move save arg5 and arg6 instruction in front of enable_irq score: add prototypes for wrapped syscalls score: remove init_mm score: add generic sys_call_table score: remove __{put,get}_user_unknown score: unset __ARCH_WANT_IPC_PARSE_VERSION score: update files according to review comments score: add maintainers for score architecture score: Add support for Sunplus S+core architecture
Diffstat (limited to 'arch/score/lib/ashldi3.c')
-rw-r--r--arch/score/lib/ashldi3.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/score/lib/ashldi3.c b/arch/score/lib/ashldi3.c
new file mode 100644
index 00000000000..15691a91043
--- /dev/null
+++ b/arch/score/lib/ashldi3.c
@@ -0,0 +1,46 @@
+/*
+ * arch/score/lib/ashldi3.c
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+long long __ashldi3(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.low = 0;
+ w.s.high = (unsigned int) uu.s.low << -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.low >> bm;
+
+ w.s.low = (unsigned int) uu.s.low << b;
+ w.s.high = ((unsigned int) uu.s.high << b) | carries;
+ }
+
+ return w.ll;
+}
+EXPORT_SYMBOL(__ashldi3);