diff options
Diffstat (limited to 'arch/mips/lib/ashldi3.c')
-rw-r--r-- | arch/mips/lib/ashldi3.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/mips/lib/ashldi3.c b/arch/mips/lib/ashldi3.c new file mode 100644 index 000000000000..beb80f316095 --- /dev/null +++ b/arch/mips/lib/ashldi3.c | |||
@@ -0,0 +1,29 @@ | |||
1 | #include <linux/module.h> | ||
2 | |||
3 | #include "libgcc.h" | ||
4 | |||
5 | long long __ashldi3(long long u, word_type b) | ||
6 | { | ||
7 | DWunion uu, w; | ||
8 | word_type bm; | ||
9 | |||
10 | if (b == 0) | ||
11 | return u; | ||
12 | |||
13 | uu.ll = u; | ||
14 | bm = 32 - b; | ||
15 | |||
16 | if (bm <= 0) { | ||
17 | w.s.low = 0; | ||
18 | w.s.high = (unsigned int) uu.s.low << -bm; | ||
19 | } else { | ||
20 | const unsigned int carries = (unsigned int) uu.s.low >> bm; | ||
21 | |||
22 | w.s.low = (unsigned int) uu.s.low << b; | ||
23 | w.s.high = ((unsigned int) uu.s.high << b) | carries; | ||
24 | } | ||
25 | |||
26 | return w.ll; | ||
27 | } | ||
28 | |||
29 | EXPORT_SYMBOL(__ashldi3); | ||