diff options
Diffstat (limited to 'usr/klibc/libgcc/__ashldi3.c')
-rw-r--r-- | usr/klibc/libgcc/__ashldi3.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/usr/klibc/libgcc/__ashldi3.c b/usr/klibc/libgcc/__ashldi3.c new file mode 100644 index 0000000..95937f0 --- /dev/null +++ b/usr/klibc/libgcc/__ashldi3.c @@ -0,0 +1,23 @@ +/* + * libgcc/__ashldi3.c + */ + +#include <stdint.h> +#include <stddef.h> + +uint64_t __ashldi3(uint64_t v, int cnt) +{ + int c = cnt & 31; + uint32_t vl = (uint32_t) v; + uint32_t vh = (uint32_t) (v >> 32); + + if (cnt & 32) { + vh = (vl << c); + vl = 0; + } else { + vh = (vh << c) + (vl >> (32 - c)); + vl = (vl << c); + } + + return ((uint64_t) vh << 32) + vl; +} |