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| author | Matheus Ferst <matheus.ferst@eldorado.org.br> | 2021-08-26 11:56:55 -0300 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2021-08-27 12:43:11 +1000 |
| commit | 2484cd9c777f6877b178901bcb26663c411fc231 (patch) | |
| tree | 296e7ff09d3e24ccb99ac48ccc0874c7e0f18e6c | |
| parent | f297c4c605e5f4412d12c4d7241df62326f47542 (diff) | |
| download | qemu-2484cd9c777f6877b178901bcb26663c411fc231.zip qemu-2484cd9c777f6877b178901bcb26663c411fc231.tar.gz qemu-2484cd9c777f6877b178901bcb26663c411fc231.tar.bz2 | |
include/qemu/int128.h: introduce bswap128s
Changes the current bswap128 implementation to use __builtin_bswap128
when available, adds a bswap128 implementation for !CONFIG_INT128
builds, and introduces bswap128s based on bswap128.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20210826145656.2507213-2-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
| -rw-r--r-- | include/qemu/int128.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/include/qemu/int128.h b/include/qemu/int128.h index 17436d8..2ac0746 100644 --- a/include/qemu/int128.h +++ b/include/qemu/int128.h @@ -1,9 +1,9 @@ #ifndef INT128_H #define INT128_H -#ifdef CONFIG_INT128 #include "qemu/bswap.h" +#ifdef CONFIG_INT128 typedef __int128_t Int128; static inline Int128 int128_make64(uint64_t a) @@ -155,7 +155,11 @@ static inline void int128_subfrom(Int128 *a, Int128 b) static inline Int128 bswap128(Int128 a) { +#if __has_builtin(__builtin_bswap128) + return __builtin_bswap128(a); +#else return int128_make128(bswap64(int128_gethi(a)), bswap64(int128_getlo(a))); +#endif } #else /* !CONFIG_INT128 */ @@ -350,5 +354,16 @@ static inline void int128_subfrom(Int128 *a, Int128 b) *a = int128_sub(*a, b); } +static inline Int128 bswap128(Int128 a) +{ + return int128_make128(bswap64(a.hi), bswap64(a.lo)); +} + #endif /* CONFIG_INT128 */ + +static inline void bswap128s(Int128 *s) +{ + *s = bswap128(*s); +} + #endif /* INT128_H */ |