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| author | Thomas Huth <thuth@redhat.com> | 2017-07-12 14:49:47 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2017-07-14 12:29:48 +0200 |
| commit | 824df3b84b653e9069764c802048d98da51e19c3 (patch) | |
| tree | a35f7f8618554062b9bb3582afeb4870dcb2fa93 /pc-bios/s390-ccw/bswap.h | |
| parent | 3639f93f91fcba2c4d686653dcffb8224555b0a8 (diff) | |
| download | qemu-824df3b84b653e9069764c802048d98da51e19c3.zip qemu-824df3b84b653e9069764c802048d98da51e19c3.tar.gz qemu-824df3b84b653e9069764c802048d98da51e19c3.tar.bz2 | |
pc-bios/s390-ccw: Move byteswap functions to a separate header
We'll need them in code that is not related to bootmap.h, so
they should reside in an independent header.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1499863793-18627-6-git-send-email-thuth@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'pc-bios/s390-ccw/bswap.h')
| -rw-r--r-- | pc-bios/s390-ccw/bswap.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/bswap.h b/pc-bios/s390-ccw/bswap.h new file mode 100644 index 0000000..a422604 --- /dev/null +++ b/pc-bios/s390-ccw/bswap.h @@ -0,0 +1,30 @@ +/* + * Byte swap functions - taken from include/qemu/bswap.h + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +static inline uint16_t bswap16(uint16_t x) +{ + return ((x & 0x00ff) << 8) | ((x & 0xff00) >> 8); +} + +static inline uint32_t bswap32(uint32_t x) +{ + return ((x & 0x000000ffU) << 24) | ((x & 0x0000ff00U) << 8) | + ((x & 0x00ff0000U) >> 8) | ((x & 0xff000000U) >> 24); +} + +static inline uint64_t bswap64(uint64_t x) +{ + return ((x & 0x00000000000000ffULL) << 56) | + ((x & 0x000000000000ff00ULL) << 40) | + ((x & 0x0000000000ff0000ULL) << 24) | + ((x & 0x00000000ff000000ULL) << 8) | + ((x & 0x000000ff00000000ULL) >> 8) | + ((x & 0x0000ff0000000000ULL) >> 24) | + ((x & 0x00ff000000000000ULL) >> 40) | + ((x & 0xff00000000000000ULL) >> 56); +} |