From 41d283bdab08868a244b9c19dce507fdf15a8990 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Wed, 17 Jun 2015 15:23:34 +0200 Subject: 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 Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/virtio-access.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/hw/virtio') diff --git a/include/hw/virtio/virtio-access.h b/include/hw/virtio/virtio-access.h index ee28c21..cee5dd7 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)) { -- cgit v1.1