diff options
| 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 | |
| parent | 3639f93f91fcba2c4d686653dcffb8224555b0a8 (diff) | |
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>
| -rw-r--r-- | pc-bios/s390-ccw/bootmap.c | 1 | ||||
| -rw-r--r-- | pc-bios/s390-ccw/bootmap.h | 26 | ||||
| -rw-r--r-- | pc-bios/s390-ccw/bswap.h | 30 |
3 files changed, 31 insertions, 26 deletions
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c index 458d3dac36..67a6123ed4 100644 --- a/pc-bios/s390-ccw/bootmap.c +++ b/pc-bios/s390-ccw/bootmap.c @@ -12,6 +12,7 @@ #include "s390-ccw.h" #include "bootmap.h" #include "virtio.h" +#include "bswap.h" #ifdef DEBUG /* #define DEBUG_FALLBACK */ diff --git a/pc-bios/s390-ccw/bootmap.h b/pc-bios/s390-ccw/bootmap.h index 7f367820f3..cf99a4c728 100644 --- a/pc-bios/s390-ccw/bootmap.h +++ b/pc-bios/s390-ccw/bootmap.h @@ -324,32 +324,6 @@ static inline int _memcmp(const void *s1, const void *s2, size_t n) return 0; } -/* from include/qemu/bswap.h */ - -/* El Torito is always little-endian */ -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); -} - static inline uint32_t iso_733_to_u32(uint64_t x) { return (uint32_t)x; diff --git a/pc-bios/s390-ccw/bswap.h b/pc-bios/s390-ccw/bswap.h new file mode 100644 index 0000000000..a4226042bc --- /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); +} |