diff options
Diffstat (limited to 'include/qemu/int128.h')
| -rw-r--r-- | include/qemu/int128.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/qemu/int128.h b/include/qemu/int128.h index 37e07fd6dd..ef71f56e3f 100644 --- a/include/qemu/int128.h +++ b/include/qemu/int128.h @@ -83,6 +83,11 @@ static inline Int128 int128_rshift(Int128 a, int n) return a >> n; } +static inline Int128 int128_urshift(Int128 a, int n) +{ + return (__uint128_t)a >> n; +} + static inline Int128 int128_lshift(Int128 a, int n) { return a << n; @@ -299,6 +304,20 @@ static inline Int128 int128_rshift(Int128 a, int n) } } +static inline Int128 int128_urshift(Int128 a, int n) +{ + uint64_t h = a.hi; + if (!n) { + return a; + } + h = h >> (n & 63); + if (n >= 64) { + return int128_make64(h); + } else { + return int128_make128((a.lo >> n) | ((uint64_t)a.hi << (64 - n)), h); + } +} + static inline Int128 int128_lshift(Int128 a, int n) { uint64_t l = a.lo << (n & 63); @@ -412,5 +431,7 @@ static inline void bswap128s(Int128 *s) } #define UINT128_MAX int128_make128(~0LL, ~0LL) +#define INT128_MAX int128_make128(UINT64_MAX, INT64_MAX) +#define INT128_MIN int128_make128(0, INT64_MIN) #endif /* INT128_H */ |