mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 07:04:00 +08:00
4e07dba7cb
Replaced libgcc functions with asm optimized implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
30 lines
475 B
C
30 lines
475 B
C
#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);
|