qtest: Adding qtest_memset and qmemset.

Currently, libqtest allows for memread and memwrite, but
does not offer a simple way to zero out regions of memory.
This patch adds a simple function to do so.

Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/libqtest.c b/tests/libqtest.c
index 4a75cd3a94..e525e6fdc2 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -659,6 +659,18 @@ void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
     qtest_rsp(s, 0);
 }
 
+void qtest_memset(QTestState *s, uint64_t addr, uint8_t pattern, size_t size)
+{
+    size_t i;
+
+    qtest_sendf(s, "write 0x%" PRIx64 " 0x%zx 0x", addr, size);
+    for (i = 0; i < size; i++) {
+        qtest_sendf(s, "%02x", pattern);
+    }
+    qtest_sendf(s, "\n");
+    qtest_rsp(s, 0);
+}
+
 QDict *qmp(const char *fmt, ...)
 {
     va_list ap;