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>
diff --git a/tests/libqtest.c b/tests/libqtest.c
index 4a75cd3..e525e6f 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -659,6 +659,18 @@
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;
diff --git a/tests/libqtest.h b/tests/libqtest.h
index 8f323c7..1be0934 100644
--- a/tests/libqtest.h
+++ b/tests/libqtest.h
@@ -283,6 +283,17 @@
void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size);
/**
+ * qtest_memset:
+ * @s: #QTestState instance to operate on.
+ * @addr: Guest address to write to.
+ * @patt: Byte pattern to fill the guest memory region with.
+ * @size: Number of bytes to write.
+ *
+ * Write a pattern to guest memory.
+ */
+void qtest_memset(QTestState *s, uint64_t addr, uint8_t patt, size_t size);
+
+/**
* qtest_clock_step_next:
* @s: #QTestState instance to operate on.
*
@@ -621,6 +632,19 @@
}
/**
+ * qmemset:
+ * @addr: Guest address to write to.
+ * @patt: Byte pattern to fill the guest memory region with.
+ * @size: Number of bytes to write.
+ *
+ * Write a pattern to guest memory.
+ */
+static inline void qmemset(uint64_t addr, uint8_t patt, size_t size)
+{
+ qtest_memset(global_qtest, addr, patt, size);
+}
+
+/**
* clock_step_next:
*
* Advance the QEMU_CLOCK_VIRTUAL to the next deadline.
