diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-09-20 20:24:58 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-09-20 20:25:03 +0200 |
commit | bfefb7a0c6e08736f2d5917c468467f134bf28bb (patch) | |
tree | 7aa7084114dc083fe5b4d7b532901bdeb67188e7 /arch/score/lib/ashrdi3.c | |
parent | 8d0cc631f6dd0a9283ceb7d61d8b85ecbcd355ea (diff) | |
parent | 78f28b7c555359c67c2a0d23f7436e915329421e (diff) |
Merge branch 'linus' into x86/urgent
Merge reason: Bring in changes that the next patch will depend on.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/score/lib/ashrdi3.c')
-rw-r--r-- | arch/score/lib/ashrdi3.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/score/lib/ashrdi3.c b/arch/score/lib/ashrdi3.c new file mode 100644 index 00000000000..d9814a5d8d3 --- /dev/null +++ b/arch/score/lib/ashrdi3.c @@ -0,0 +1,48 @@ +/* + * arch/score/lib/ashrdi3.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 __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); |