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| author | Greg Kurz <gkurz@linux.vnet.ibm.com> | 2015-06-17 15:23:34 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-06-17 17:12:54 +0200 |
| commit | 41d283bdab08868a244b9c19dce507fdf15a8990 (patch) | |
| tree | 5f1833625ff63af3463ef3353f63d30b2d743b27 /include/hw/virtio/virtio-access.h | |
| parent | 332f64073bddc9240cd572f64682a44572b67049 (diff) | |
| download | focaccia-qemu-41d283bdab08868a244b9c19dce507fdf15a8990.tar.gz focaccia-qemu-41d283bdab08868a244b9c19dce507fdf15a8990.zip | |
virtio: introduce virtio_legacy_is_cross_endian()
This helper will be used by vhost and tap to detect cross-endianness in the legacy virtio case. Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/virtio/virtio-access.h')
| -rw-r--r-- | include/hw/virtio/virtio-access.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/hw/virtio/virtio-access.h b/include/hw/virtio/virtio-access.h index ee28c21fef..cee5dd70c9 100644 --- a/include/hw/virtio/virtio-access.h +++ b/include/hw/virtio/virtio-access.h @@ -32,6 +32,19 @@ static inline bool virtio_access_is_big_endian(VirtIODevice *vdev) #endif } +static inline bool virtio_legacy_is_cross_endian(VirtIODevice *vdev) +{ +#ifdef TARGET_IS_BIENDIAN +#ifdef HOST_WORDS_BIGENDIAN + return !virtio_is_big_endian(vdev); +#else + return virtio_is_big_endian(vdev); +#endif +#else + return false; +#endif +} + static inline uint16_t virtio_lduw_phys(VirtIODevice *vdev, hwaddr pa) { if (virtio_access_is_big_endian(vdev)) { |