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authorRalf Baechle <ralf@linux-mips.org>2006-06-07 13:25:37 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-06-19 17:39:16 +0100
commit72fbfb260197a52c2bc2583f3e8f15d261d0f924 (patch)
tree4801ed07d35013ece68ed9ca40f40421ff8f5e2a /arch/mips/lib/ashrdi3.c
parentaac076f8805448a6331a526aa02cc438730ddd39 (diff)
[MIPS] Fix optimization for size build.
It took a while longer than on other architectures but gcc has finally started to strike us as well ... This also fixes the damage by 6edfba1b33c701108717f4e036320fc39abe1912. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/lib/ashrdi3.c')
-rw-r--r--arch/mips/lib/ashrdi3.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/mips/lib/ashrdi3.c b/arch/mips/lib/ashrdi3.c
new file mode 100644
index 00000000000..c884a912b66
--- /dev/null
+++ b/arch/mips/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);