diff options
| -rw-r--r-- | src/vppinfra/byte_order.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/vppinfra/byte_order.h b/src/vppinfra/byte_order.h index b263538c6fe..4cdc06fb329 100644 --- a/src/vppinfra/byte_order.h +++ b/src/vppinfra/byte_order.h @@ -56,6 +56,13 @@ always_inline u16 clib_byte_swap_u16 (u16 x) { +#if defined (__aarch64__) + if (!__builtin_constant_p (x)) + { + __asm__ ("rev16 %w0, %w0":"+r" (x)); + return x; + } +#endif return (x >> 8) | (x << 8); } @@ -74,6 +81,12 @@ clib_byte_swap_u32 (u32 x) asm volatile ("bswap %0":"=r" (x):"0" (x)); return x; } +#elif defined (__aarch64__) + if (!__builtin_constant_p (x)) + { + __asm__ ("rev %w0, %w0":"+r" (x)); + return x; + } #endif return ((x << 24) | ((x & 0xff00) << 8) | ((x >> 8) & 0xff00) | (x >> 24)); } @@ -93,6 +106,12 @@ clib_byte_swap_u64 (u64 x) asm volatile ("bswapq %0":"=r" (x):"0" (x)); return x; } +#elif defined (__aarch64__) + if (!__builtin_constant_p (x)) + { + __asm__ ("rev %0, %0":"+r" (x)); + return x; + } #endif #define _(x,n,i) \ ((((x) >> (8*(i))) & 0xff) << (8*((n)-(i)-1))) |