diff options
Diffstat (limited to 'src/vppinfra/clib.h')
| -rw-r--r-- | src/vppinfra/clib.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/vppinfra/clib.h b/src/vppinfra/clib.h index dac41adb165..bdea43b3fe0 100644 --- a/src/vppinfra/clib.h +++ b/src/vppinfra/clib.h @@ -40,6 +40,10 @@ #include <vppinfra/config.h> +#ifdef __x86_64__ +#include <x86intrin.h> +#endif + /* Standalone means to not assume we are running on a Unix box. */ #if ! defined (CLIB_STANDALONE) && ! defined (CLIB_LINUX_KERNEL) #define CLIB_UNIX @@ -293,6 +297,15 @@ flt_round_to_multiple (f64 x, f64 f) return f * flt_round_nearest (x / f); } +always_inline uword +extract_bits (uword x, int start, int count) +{ +#ifdef __BMI__ + return _bextr_u64 (x, start, count); +#endif + return (x >> start) & pow2_mask (count); +} + #define clib_max(x,y) \ ({ \ __typeof__ (x) _x = (x); \ |