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| author | Joel Sherrill <joel.sherrill@oarcorp.com> | 2012-04-18 09:48:49 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2012-04-18 09:49:03 -0500 |
| commit | f084ec7edce9cfb282c9f46adc7f4677fbdcc376 (patch) | |
| tree | 541562f12add7d4fccc01df664fc49d965bf9b9e /freebsd | |
| parent | Moved rtems-bsd-cyclecount.c to cpu.h (diff) | |
| download | rtems-libbsd-f084ec7edce9cfb282c9f46adc7f4677fbdcc376.tar.bz2 | |
Add generic implementation of __bswap64
Diffstat (limited to 'freebsd')
| -rw-r--r-- | freebsd/sys/endian.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/freebsd/sys/endian.h b/freebsd/sys/endian.h index 5c95d748..19e1ff25 100644 --- a/freebsd/sys/endian.h +++ b/freebsd/sys/endian.h @@ -197,4 +197,20 @@ le64enc(void *pp, uint64_t u) le32enc(p + 4, u >> 32); } +/* + * In FreeBSD, this can be CPU specific but most targets use this + * implementation. + * + * This is from the powerpc implementation. + */ +static __inline uint64_t +__bswap64(uint64_t _x) +{ + + return ((_x >> 56) | ((_x >> 40) & 0xff00) | ((_x >> 24) & 0xff0000) | + ((_x >> 8) & 0xff000000) | ((_x << 8) & ((__uint64_t)0xff << 32)) | + ((_x << 24) & ((__uint64_t)0xff << 40)) | + ((_x << 40) & ((__uint64_t)0xff << 48)) | ((_x << 56))); +} + #endif /* _SYS_ENDIAN_HH_ */ |