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author | Ralf Baechle <ralf@linux-mips.org> | 2006-06-07 13:25:37 +0100 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2006-06-19 17:39:16 +0100 |
commit | 72fbfb260197a52c2bc2583f3e8f15d261d0f924 (patch) | |
tree | 4801ed07d35013ece68ed9ca40f40421ff8f5e2a /arch/mips/lib/lshrdi3.c | |
parent | aac076f8805448a6331a526aa02cc438730ddd39 (diff) | |
download | linux-stable-72fbfb260197a52c2bc2583f3e8f15d261d0f924.tar.gz linux-stable-72fbfb260197a52c2bc2583f3e8f15d261d0f924.tar.bz2 linux-stable-72fbfb260197a52c2bc2583f3e8f15d261d0f924.zip |
[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/lshrdi3.c')
-rw-r--r-- | arch/mips/lib/lshrdi3.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/mips/lib/lshrdi3.c b/arch/mips/lib/lshrdi3.c new file mode 100644 index 000000000000..dcf8d6810b7c --- /dev/null +++ b/arch/mips/lib/lshrdi3.c @@ -0,0 +1,29 @@ +#include <linux/module.h> + +#include "libgcc.h" + +long long __lshrdi3(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 = 0; + w.s.low = (unsigned int) uu.s.high >> -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.high << bm; + + w.s.high = (unsigned int) uu.s.high >> b; + w.s.low = ((unsigned int) uu.s.low >> b) | carries; + } + + return w.ll; +} + +EXPORT_SYMBOL(__lshrdi3); |