tests: Add virtio device initialization

Add functions to read and write virtio header fields.
Add status bit setting in virtio-blk-device.

Signed-off-by: Marc Marí <marc.mari.barcelo@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/libqtest.h b/tests/libqtest.h
index 1be0934f07..3e12cab2f2 100644
--- a/tests/libqtest.h
+++ b/tests/libqtest.h
@@ -682,4 +682,11 @@ static inline int64_t clock_set(int64_t val)
     return qtest_clock_set(global_qtest, val);
 }
 
+/**
+ * qtest_big_endian:
+ *
+ * Returns: True if the architecture under test has a big endian configuration.
+ */
+bool qtest_big_endian(void);
+
 #endif